1 /* Source code parsing and tree node generation for the GNU compiler
2 for the Java(TM) language.
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
5 Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING. If not, write to
21 the Free Software Foundation, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA.
24 Java and all Java-based marks are trademarks or registered trademarks
25 of Sun Microsystems, Inc. in the United States and other countries.
26 The Free Software Foundation is independent of Sun Microsystems, Inc. */
28 /* This file parses java source code and issues a tree node image
29 suitable for code generation (byte code and targeted CPU assembly
32 The grammar conforms to the Java grammar described in "The Java(TM)
33 Language Specification. J. Gosling, B. Joy, G. Steele. Addison Wesley
34 1996, ISBN 0-201-63451-1"
36 The following modifications were brought to the original grammar:
38 method_body: added the rule '| block SC_TK'
39 static_initializer: added the rule 'static block SC_TK'.
41 Note: All the extra rules described above should go away when the
42 empty_statement rule will work.
44 statement_nsi: 'nsi' should be read no_short_if.
46 Some rules have been modified to support JDK1.1 inner classes
47 definitions and other extensions. */
52 #include "coretypes.h"
61 #include "java-tree.h"
73 #include "tree-inline.h"
77 /* Local function prototypes */
78 static char *java_accstring_lookup (int);
79 static const char *accessibility_string (int);
80 static void classitf_redefinition_error (const char *,tree, tree, tree);
81 static void variable_redefinition_error (tree, tree, tree, int);
82 static tree create_class (int, tree, tree, tree);
83 static tree create_interface (int, tree, tree);
84 static void end_class_declaration (int);
85 static tree find_field (tree, tree);
86 static tree lookup_field_wrapper (tree, tree);
87 static int duplicate_declaration_error_p (tree, tree, tree);
88 static void register_fields (int, tree, tree);
89 static tree parser_qualified_classname (tree);
90 static int parser_check_super (tree, tree, tree);
91 static int parser_check_super_interface (tree, tree, tree);
92 static void check_modifiers_consistency (int);
93 static tree lookup_cl (tree);
94 static tree lookup_java_method2 (tree, tree, int);
95 static tree method_header (int, tree, tree, tree);
96 static void fix_method_argument_names (tree ,tree);
97 static tree method_declarator (tree, tree);
98 static void parse_warning_context (tree cl, const char *msg, ...)
100 static void issue_warning_error_from_context (tree, const char *msg, va_list)
101 ATTRIBUTE_PRINTF (2, 0);
102 static void parse_ctor_invocation_error (void);
103 static tree parse_jdk1_1_error (const char *);
104 static void complete_class_report_errors (jdep *);
105 static int process_imports (void);
106 static void read_import_dir (tree);
107 static int find_in_imports_on_demand (tree, tree);
108 static void find_in_imports (tree, tree);
109 static void check_inner_class_access (tree, tree, tree);
110 static int check_pkg_class_access (tree, tree, bool, tree);
111 static void register_package (tree);
112 static tree resolve_package (tree, tree *, tree *);
113 static tree resolve_class (tree, tree, tree, tree);
114 static void declare_local_variables (int, tree, tree);
115 static void dump_java_tree (enum tree_dump_index, tree);
116 static void source_start_java_method (tree);
117 static void source_end_java_method (void);
118 static tree find_name_in_single_imports (tree);
119 static void check_abstract_method_header (tree);
120 static tree lookup_java_interface_method2 (tree, tree);
121 static tree resolve_expression_name (tree, tree *);
122 static tree maybe_create_class_interface_decl (tree, tree, tree, tree);
123 static int check_class_interface_creation (int, int, tree, tree, tree, tree);
124 static tree patch_method_invocation (tree, tree, tree, int, int *, tree *);
125 static tree resolve_and_layout (tree, tree);
126 static tree qualify_and_find (tree, tree, tree);
127 static tree resolve_no_layout (tree, tree);
128 static int invocation_mode (tree, int);
129 static tree find_applicable_accessible_methods_list (int, tree, tree, tree);
130 static void search_applicable_methods_list (int, tree, tree, tree, tree *, tree *);
131 static tree find_most_specific_methods_list (tree);
132 static int argument_types_convertible (tree, tree);
133 static tree patch_invoke (tree, tree, tree);
134 static int maybe_use_access_method (int, tree *, tree *);
135 static tree lookup_method_invoke (int, tree, tree, tree, tree);
136 static tree register_incomplete_type (int, tree, tree, tree);
137 static tree check_inner_circular_reference (tree, tree);
138 static tree check_circular_reference (tree);
139 static tree obtain_incomplete_type (tree);
140 static tree java_complete_lhs (tree);
141 static tree java_complete_tree (tree);
142 static tree maybe_generate_pre_expand_clinit (tree);
143 static int analyze_clinit_body (tree, tree);
144 static int maybe_yank_clinit (tree);
145 static void start_complete_expand_method (tree);
146 static void java_complete_expand_method (tree);
147 static void java_expand_method_bodies (tree);
148 static int unresolved_type_p (tree, tree *);
149 static void create_jdep_list (struct parser_ctxt *);
150 static tree build_expr_block (tree, tree);
151 static tree enter_block (void);
152 static tree exit_block (void);
153 static tree lookup_name_in_blocks (tree);
154 static void maybe_absorb_scoping_blocks (void);
155 static tree build_method_invocation (tree, tree);
156 static tree build_new_invocation (tree, tree);
157 static tree build_assignment (int, int, tree, tree);
158 static tree build_binop (enum tree_code, int, tree, tree);
159 static tree patch_assignment (tree, tree);
160 static tree patch_binop (tree, tree, tree);
161 static tree build_unaryop (int, int, tree);
162 static tree build_incdec (int, int, tree, int);
163 static tree patch_unaryop (tree, tree);
164 static tree build_cast (int, tree, tree);
165 static tree build_null_of_type (tree);
166 static tree patch_cast (tree, tree);
167 static int valid_ref_assignconv_cast_p (tree, tree, int);
168 static int valid_builtin_assignconv_identity_widening_p (tree, tree);
169 static int valid_cast_to_p (tree, tree);
170 static int valid_method_invocation_conversion_p (tree, tree);
171 static tree try_builtin_assignconv (tree, tree, tree);
172 static tree try_reference_assignconv (tree, tree);
173 static tree build_unresolved_array_type (tree);
174 static int build_type_name_from_array_name (tree, tree *);
175 static tree build_array_from_name (tree, tree, tree, tree *);
176 static tree build_array_ref (int, tree, tree);
177 static tree patch_array_ref (tree);
178 static tree make_qualified_name (tree, tree, int);
179 static tree merge_qualified_name (tree, tree);
180 static tree make_qualified_primary (tree, tree, int);
181 static int resolve_qualified_expression_name (tree, tree *, tree *, tree *);
182 static void qualify_ambiguous_name (tree);
183 static tree resolve_field_access (tree, tree *, tree *);
184 static tree build_newarray_node (tree, tree, int);
185 static tree patch_newarray (tree);
186 static tree resolve_type_during_patch (tree);
187 static tree build_this (int);
188 static tree build_wfl_wrap (tree, int);
189 static tree build_return (int, tree);
190 static tree patch_return (tree);
191 static tree maybe_access_field (tree, tree, tree);
192 static int complete_function_arguments (tree);
193 static int check_for_static_method_reference (tree, tree, tree, tree, tree);
194 static int not_accessible_p (tree, tree, tree, int);
195 static void check_deprecation (tree, tree);
196 static int class_in_current_package (tree);
197 static tree build_if_else_statement (int, tree, tree, tree);
198 static tree patch_if_else_statement (tree);
199 static tree add_stmt_to_block (tree, tree, tree);
200 static tree patch_exit_expr (tree);
201 static tree build_labeled_block (int, tree);
202 static tree finish_labeled_statement (tree, tree);
203 static tree build_bc_statement (int, int, tree);
204 static tree patch_bc_statement (tree);
205 static tree patch_loop_statement (tree);
206 static tree build_new_loop (tree);
207 static tree build_loop_body (int, tree, int);
208 static tree finish_loop_body (int, tree, tree, int);
209 static tree build_debugable_stmt (int, tree);
210 static tree finish_for_loop (int, tree, tree, tree);
211 static tree patch_switch_statement (tree);
212 static tree string_constant_concatenation (tree, tree);
213 static tree build_string_concatenation (tree, tree);
214 static tree patch_string_cst (tree);
215 static tree patch_string (tree);
216 static tree encapsulate_with_try_catch (int, tree, tree, tree);
217 static tree build_assertion (int, tree, tree);
218 static tree build_try_statement (int, tree, tree);
219 static tree build_try_finally_statement (int, tree, tree);
220 static tree patch_try_statement (tree);
221 static tree patch_synchronized_statement (tree, tree);
222 static tree patch_throw_statement (tree, tree);
223 static void check_thrown_exceptions (int, tree, tree);
224 static int check_thrown_exceptions_do (tree);
225 static void purge_unchecked_exceptions (tree);
226 static bool ctors_unchecked_throws_clause_p (tree);
227 static void check_concrete_throws_clauses (tree, tree, tree, tree);
228 static void check_throws_clauses (tree, tree, tree);
229 static void finish_method_declaration (tree);
230 static tree build_super_invocation (tree);
231 static int verify_constructor_circularity (tree, tree);
232 static char *constructor_circularity_msg (tree, tree);
233 static tree build_this_super_qualified_invocation (int, tree, tree, int, int);
234 static const char *get_printable_method_name (tree);
235 static tree patch_conditional_expr (tree, tree, tree);
236 static tree generate_finit (tree);
237 static tree generate_instinit (tree);
238 static tree build_instinit_invocation (tree);
239 static void fix_constructors (tree);
240 static tree build_alias_initializer_parameter_list (int, tree, tree, int *);
241 static tree craft_constructor (tree, tree);
242 static int verify_constructor_super (tree);
243 static tree create_artificial_method (tree, int, tree, tree, tree);
244 static void start_artificial_method_body (tree);
245 static void end_artificial_method_body (tree);
246 static int check_method_redefinition (tree, tree);
247 static int check_method_types_complete (tree);
248 static bool hack_is_accessible_p (tree, tree);
249 static void java_check_regular_methods (tree);
250 static void check_interface_throws_clauses (tree, tree);
251 static void java_check_abstract_methods (tree);
252 static void unreachable_stmt_error (tree);
253 static int not_accessible_field_error (tree, tree);
254 static tree find_expr_with_wfl (tree);
255 static void missing_return_error (tree);
256 static tree build_new_array_init (int, tree);
257 static tree patch_new_array_init (tree, tree);
258 static tree maybe_build_array_element_wfl (tree);
259 static int array_constructor_check_entry (tree, tree);
260 static const char *purify_type_name (const char *);
261 static tree fold_constant_for_init (tree, tree);
262 static tree strip_out_static_field_access_decl (tree);
263 static jdeplist *reverse_jdep_list (struct parser_ctxt *);
264 static void static_ref_err (tree, tree, tree);
265 static void parser_add_interface (tree, tree, tree);
266 static void add_superinterfaces (tree, tree);
267 static tree jdep_resolve_class (jdep *);
268 static int note_possible_classname (const char *, int);
269 static void java_complete_expand_classes (void);
270 static void java_complete_expand_class (tree);
271 static void java_complete_expand_methods (tree);
272 static tree cut_identifier_in_qualified (tree);
273 static tree java_stabilize_reference (tree);
274 static tree do_unary_numeric_promotion (tree);
275 static char * operator_string (tree);
276 static tree do_merge_string_cste (tree, const char *, int, int);
277 static tree merge_string_cste (tree, tree, int);
278 static tree java_refold (tree);
279 static int java_decl_equiv (tree, tree);
280 static int binop_compound_p (enum tree_code);
281 static tree search_loop (tree);
282 static int labeled_block_contains_loop_p (tree, tree);
283 static int check_abstract_method_definitions (int, tree, tree);
284 static void java_check_abstract_method_definitions (tree);
285 static void java_debug_context_do (int);
286 static void java_parser_context_push_initialized_field (void);
287 static void java_parser_context_pop_initialized_field (void);
288 static tree reorder_static_initialized (tree);
289 static void java_parser_context_suspend (void);
290 static void java_parser_context_resume (void);
291 static int pop_current_osb (struct parser_ctxt *);
293 /* JDK 1.1 work. FIXME */
295 static tree maybe_make_nested_class_name (tree);
296 static int make_nested_class_name (tree);
297 static void link_nested_class_to_enclosing (void);
298 static tree resolve_inner_class (htab_t, tree, tree *, tree *, tree);
299 static tree find_as_inner_class (tree, tree, tree);
300 static tree find_as_inner_class_do (tree, tree);
301 static int check_inner_class_redefinition (tree, tree);
303 static tree build_thisn_assign (void);
304 static tree build_current_thisn (tree);
305 static tree build_access_to_thisn (tree, tree, int);
306 static tree maybe_build_thisn_access_method (tree);
308 static tree build_outer_field_access (tree, tree);
309 static tree build_outer_field_access_methods (tree);
310 static tree build_outer_field_access_expr (int, tree, tree,
312 static tree build_outer_method_access_method (tree);
313 static tree build_new_access_id (void);
314 static tree build_outer_field_access_method (tree, tree, tree,
317 static int outer_field_access_p (tree, tree);
318 static int outer_field_expanded_access_p (tree, tree *,
320 static tree outer_field_access_fix (tree, tree, tree);
321 static tree build_incomplete_class_ref (int, tree);
322 static tree patch_incomplete_class_ref (tree);
323 static tree create_anonymous_class (tree);
324 static void patch_anonymous_class (tree, tree, tree);
325 static void add_inner_class_fields (tree, tree);
327 static tree build_dot_class_method (tree);
328 static tree build_dot_class_method_invocation (tree, tree);
329 static void create_new_parser_context (int);
330 static tree maybe_build_class_init_for_field (tree, tree);
332 static int attach_init_test_initialization_flags (void **, void *);
333 static int emit_test_initialization (void **, void *);
335 static char *string_convert_int_cst (tree);
337 /* Number of error found so far. */
338 int java_error_count;
339 /* Number of warning found so far. */
340 int java_warning_count;
341 /* Tell when not to fold, when doing xrefs */
343 /* Cyclic inheritance report, as it can be set by layout_class */
344 const char *cyclic_inheritance_report;
346 /* The current parser context */
347 struct parser_ctxt *ctxp;
349 /* List of things that were analyzed for which code will be generated */
350 struct parser_ctxt *ctxp_for_generation = NULL;
352 /* binop_lookup maps token to tree_code. It is used where binary
353 operations are involved and required by the parser. RDIV_EXPR
354 covers both integral/floating point division. The code is changed
355 once the type of both operator is worked out. */
357 static const enum tree_code binop_lookup[19] =
359 PLUS_EXPR, MINUS_EXPR, MULT_EXPR, RDIV_EXPR, TRUNC_MOD_EXPR,
360 LSHIFT_EXPR, RSHIFT_EXPR, URSHIFT_EXPR,
361 BIT_AND_EXPR, BIT_XOR_EXPR, BIT_IOR_EXPR,
362 TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR,
363 EQ_EXPR, NE_EXPR, GT_EXPR, GE_EXPR, LT_EXPR, LE_EXPR,
365 #define BINOP_LOOKUP(VALUE) \
366 binop_lookup [((VALUE) - PLUS_TK) % ARRAY_SIZE (binop_lookup)]
368 /* This is the end index for binary operators that can also be used
369 in compound assignments. */
370 #define BINOP_COMPOUND_CANDIDATES 11
372 /* The "$L" identifier we use to create labels. */
373 static GTY(()) tree label_id;
375 /* The "StringBuffer" identifier used for the String `+' operator. */
376 static GTY(()) tree wfl_string_buffer;
378 /* The "append" identifier used for String `+' operator. */
379 static GTY(()) tree wfl_append;
381 /* The "toString" identifier used for String `+' operator. */
382 static GTY(()) tree wfl_to_string;
384 /* The "java.lang" import qualified name. */
385 static GTY(()) tree java_lang_id;
387 /* The generated `inst$' identifier used for generated enclosing
388 instance/field access functions. */
389 static GTY(()) tree inst_id;
391 /* Context and flag for static blocks */
392 static GTY(()) tree current_static_block;
394 /* The generated `write_parm_value$' identifier. */
395 static GTY(()) tree wpv_id;
397 /* The list of all packages we've seen so far */
398 static GTY(()) tree package_list;
400 /* Hold THIS for the scope of the current method decl. */
401 static GTY(()) tree current_this;
403 /* Hold a list of catch clauses list. The first element of this list is
404 the list of the catch clauses of the currently analyzed try block. */
405 static GTY(()) tree currently_caught_type_list;
407 /* This holds a linked list of all the case labels for the current
408 switch statement. It is only used when checking to see if there
409 are duplicate labels. FIXME: probably this should just be attached
410 to the switch itself; then it could be referenced via
411 `ctxp->current_loop'. */
412 static GTY(()) tree case_label_list;
414 /* Anonymous class counter. Will be reset to 1 every time a non
415 anonymous class gets created. */
416 static int anonymous_class_counter = 1;
418 static GTY(()) tree src_parse_roots[1];
420 /* All classes seen from source code */
421 #define gclass_list src_parse_roots[0]
423 /* Check modifiers. If one doesn't fit, retrieve it in its declaration
424 line and point it out. */
425 /* Should point out the one that don't fit. ASCII/unicode, going
428 #define check_modifiers(__message, __value, __mask) do { \
429 if ((__value) & ~(__mask)) \
431 size_t i, remainder = (__value) & ~(__mask); \
432 for (i = 0; i < ARRAY_SIZE (ctxp->modifier_ctx); i++) \
433 if ((1 << i) & remainder) \
434 parse_error_context (ctxp->modifier_ctx [i], (__message), \
435 java_accstring_lookup (1 << i)); \
457 /* Things defined here have to match the order of what's in the
458 binop_lookup table. */
460 %token PLUS_TK MINUS_TK MULT_TK DIV_TK REM_TK
461 %token LS_TK SRS_TK ZRS_TK
462 %token AND_TK XOR_TK OR_TK
463 %token BOOL_AND_TK BOOL_OR_TK
464 %token EQ_TK NEQ_TK GT_TK GTE_TK LT_TK LTE_TK
466 /* This maps to the same binop_lookup entry than the token above */
468 %token PLUS_ASSIGN_TK MINUS_ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK
470 %token LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK
471 %token AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK
474 /* Modifier TOKEN have to be kept in this order. Don't scramble it */
476 %token PUBLIC_TK PRIVATE_TK PROTECTED_TK
477 %token STATIC_TK FINAL_TK SYNCHRONIZED_TK
478 %token VOLATILE_TK TRANSIENT_TK NATIVE_TK
479 %token PAD_TK ABSTRACT_TK STRICT_TK
482 /* Keep those two in order, too */
483 %token DECR_TK INCR_TK
485 /* From now one, things can be in any order */
487 %token DEFAULT_TK IF_TK THROW_TK
488 %token BOOLEAN_TK DO_TK IMPLEMENTS_TK
489 %token THROWS_TK BREAK_TK IMPORT_TK
490 %token ELSE_TK INSTANCEOF_TK RETURN_TK
491 %token VOID_TK CATCH_TK INTERFACE_TK
492 %token CASE_TK EXTENDS_TK FINALLY_TK
493 %token SUPER_TK WHILE_TK CLASS_TK
494 %token SWITCH_TK CONST_TK TRY_TK
495 %token FOR_TK NEW_TK CONTINUE_TK
496 %token GOTO_TK PACKAGE_TK THIS_TK
499 %token BYTE_TK SHORT_TK INT_TK LONG_TK
500 %token CHAR_TK INTEGRAL_TK
502 %token FLOAT_TK DOUBLE_TK FP_TK
506 %token REL_QM_TK REL_CL_TK NOT_TK NEG_TK
508 %token ASSIGN_ANY_TK ASSIGN_TK
509 %token OP_TK CP_TK OCB_TK CCB_TK OSB_TK CSB_TK SC_TK C_TK DOT_TK
511 %token STRING_LIT_TK CHAR_LIT_TK INT_LIT_TK FP_LIT_TK
512 %token TRUE_TK FALSE_TK BOOL_LIT_TK NULL_TK
514 %type <value> modifiers MODIFIER_TK final synchronized
516 %type <node> super ID_TK identifier
517 %type <node> name simple_name qualified_name
518 %type <node> type_declaration compilation_unit
519 field_declaration method_declaration extends_interfaces
520 interfaces interface_type_list
521 import_declarations package_declaration
522 type_declarations interface_body
523 interface_member_declaration constant_declaration
524 interface_member_declarations interface_type
525 abstract_method_declaration
526 %type <node> class_body_declaration class_member_declaration
527 static_initializer constructor_declaration block
528 %type <node> class_body_declarations constructor_header
529 %type <node> class_or_interface_type class_type class_type_list
530 constructor_declarator explicit_constructor_invocation
531 %type <node> dim_expr dim_exprs this_or_super throws
533 %type <node> variable_declarator_id variable_declarator
534 variable_declarators variable_initializer
535 variable_initializers constructor_body
538 %type <node> class_body block_end constructor_block_end
539 %type <node> statement statement_without_trailing_substatement
540 labeled_statement if_then_statement label_decl
541 if_then_else_statement while_statement for_statement
542 statement_nsi labeled_statement_nsi do_statement
543 if_then_else_statement_nsi while_statement_nsi
544 for_statement_nsi statement_expression_list for_init
545 for_update statement_expression expression_statement
546 primary_no_new_array expression primary array_type
547 array_creation_initialized array_creation_uninitialized
548 class_instance_creation_expression field_access
549 method_invocation array_access something_dot_new
550 argument_list postfix_expression while_expression
551 post_increment_expression post_decrement_expression
552 unary_expression_not_plus_minus unary_expression
553 pre_increment_expression pre_decrement_expression
555 multiplicative_expression additive_expression
556 shift_expression relational_expression
557 equality_expression and_expression
558 exclusive_or_expression inclusive_or_expression
559 conditional_and_expression conditional_or_expression
560 conditional_expression assignment_expression
561 left_hand_side assignment for_header for_begin
562 constant_expression do_statement_begin empty_statement
563 switch_statement synchronized_statement throw_statement
564 try_statement assert_statement
565 switch_expression switch_block
566 catches catch_clause catch_clause_parameter finally
567 anonymous_class_creation trap_overflow_corner_case
568 %type <node> return_statement break_statement continue_statement
570 %type <operator> ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK
571 %type <operator> REM_ASSIGN_TK PLUS_ASSIGN_TK MINUS_ASSIGN_TK
572 %type <operator> LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK
573 %type <operator> AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK
574 %type <operator> ASSIGN_ANY_TK assignment_operator
575 %token <operator> EQ_TK GTE_TK ZRS_TK SRS_TK GT_TK LTE_TK LS_TK
576 %token <operator> BOOL_AND_TK AND_TK BOOL_OR_TK OR_TK INCR_TK PLUS_TK
577 %token <operator> DECR_TK MINUS_TK MULT_TK DIV_TK XOR_TK REM_TK NEQ_TK
578 %token <operator> NEG_TK REL_QM_TK REL_CL_TK NOT_TK LT_TK OCB_TK CCB_TK
579 %token <operator> OP_TK OSB_TK DOT_TK THROW_TK INSTANCEOF_TK
580 %type <operator> THIS_TK SUPER_TK RETURN_TK BREAK_TK CONTINUE_TK
581 %type <operator> CASE_TK DEFAULT_TK TRY_TK CATCH_TK SYNCHRONIZED_TK
582 %type <operator> NEW_TK ASSERT_TK
584 %type <node> method_body
586 %type <node> literal INT_LIT_TK FP_LIT_TK BOOL_LIT_TK CHAR_LIT_TK
587 STRING_LIT_TK NULL_TK VOID_TK
589 %type <node> IF_TK WHILE_TK FOR_TK
591 %type <node> formal_parameter_list formal_parameter
592 method_declarator method_header
594 %type <node> primitive_type reference_type type
595 BOOLEAN_TK INTEGRAL_TK FP_TK
597 /* Added or modified JDK 1.1 rule types */
598 %type <node> type_literals
601 /* 19.2 Production from 2.3: The Syntactic Grammar */
602 goal: compilation_unit
606 /* 19.3 Productions from 3: Lexical structure */
616 /* 19.4 Productions from 4: Types, Values and Variables */
629 class_or_interface_type
633 class_or_interface_type:
638 class_or_interface_type /* Default rule */
642 class_or_interface_type
648 int osb = pop_current_osb (ctxp);
649 tree t = build_java_array_type (($1), -1);
651 t = build_unresolved_array_type (t);
656 int osb = pop_current_osb (ctxp);
659 t = build_unresolved_array_type (t);
664 /* 19.5 Productions from 6: Names */
666 simple_name /* Default rule */
667 | qualified_name /* Default rule */
671 identifier /* Default rule */
675 name DOT_TK identifier
676 { $$ = make_qualified_name ($1, $3, $2.location); }
683 /* 19.6: Production from 7: Packages */
686 | package_declaration
687 | import_declarations
689 | package_declaration import_declarations
690 | package_declaration type_declarations
691 | import_declarations type_declarations
692 | package_declaration import_declarations type_declarations
700 | import_declarations import_declaration
708 | type_declarations type_declaration
712 PACKAGE_TK name SC_TK
714 ctxp->package = EXPR_WFL_NODE ($2);
715 register_package (ctxp->package);
718 {yyerror ("Missing name"); RECOVER;}
719 | PACKAGE_TK name error
720 {yyerror ("';' expected"); RECOVER;}
724 single_type_import_declaration
725 | type_import_on_demand_declaration
728 single_type_import_declaration:
731 tree name = EXPR_WFL_NODE ($2), last_name;
732 int i = IDENTIFIER_LENGTH (name)-1;
733 const char *last = &IDENTIFIER_POINTER (name)[i];
734 while (last != IDENTIFIER_POINTER (name))
740 last_name = get_identifier (++last);
741 if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (last_name))
743 tree err = find_name_in_single_imports (last_name);
744 if (err && err != name)
746 ($2, "Ambiguous class: `%s' and `%s'",
747 IDENTIFIER_POINTER (name),
748 IDENTIFIER_POINTER (err));
750 REGISTER_IMPORT ($2, last_name);
753 REGISTER_IMPORT ($2, last_name);
756 {yyerror ("Missing name"); RECOVER;}
757 | IMPORT_TK name error
758 {yyerror ("';' expected"); RECOVER;}
761 type_import_on_demand_declaration:
762 IMPORT_TK name DOT_TK MULT_TK SC_TK
764 tree name = EXPR_WFL_NODE ($2);
766 /* Search for duplicates. */
767 for (it = ctxp->import_demand_list; it; it = TREE_CHAIN (it))
768 if (EXPR_WFL_NODE (TREE_PURPOSE (it)) == name)
770 /* Don't import the same thing more than once, just ignore
771 duplicates (7.5.2) */
774 read_import_dir ($2);
775 ctxp->import_demand_list =
776 chainon (ctxp->import_demand_list,
777 build_tree_list ($2, NULL_TREE));
780 | IMPORT_TK name DOT_TK error
781 {yyerror ("'*' expected"); RECOVER;}
782 | IMPORT_TK name DOT_TK MULT_TK error
783 {yyerror ("';' expected"); RECOVER;}
788 { end_class_declaration (0); }
789 | interface_declaration
790 { end_class_declaration (0); }
795 yyerror ("Class or interface declaration expected");
799 /* 19.7 Shortened from the original:
800 modifiers: modifier | modifiers modifier
801 modifier: any of public... */
807 | modifiers MODIFIER_TK
812 (ctxp->modifier_ctx [$2], "Modifier `%s' declared twice",
813 java_accstring_lookup (acc));
821 /* 19.8.1 Production from $8.1: Class Declaration */
823 modifiers CLASS_TK identifier super interfaces
824 { create_class ($1, $3, $4, $5); }
827 | CLASS_TK identifier super interfaces
828 { create_class (0, $2, $3, $4); }
831 | modifiers CLASS_TK error
832 { yyerror ("Missing class name"); RECOVER; }
834 { yyerror ("Missing class name"); RECOVER; }
835 | CLASS_TK identifier error
837 if (!ctxp->class_err) yyerror ("'{' expected");
840 | modifiers CLASS_TK identifier error
841 { if (!ctxp->class_err) yyerror ("'{' expected"); RECOVER; }
846 | EXTENDS_TK class_type
848 | EXTENDS_TK class_type error
849 {yyerror ("'{' expected"); ctxp->class_err=1;}
851 {yyerror ("Missing super class name"); ctxp->class_err=1;}
856 | IMPLEMENTS_TK interface_type_list
858 | IMPLEMENTS_TK error
861 yyerror ("Missing interface name");
868 ctxp->interface_number = 1;
869 $$ = build_tree_list ($1, NULL_TREE);
871 | interface_type_list C_TK interface_type
873 ctxp->interface_number++;
874 $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
876 | interface_type_list C_TK error
877 {yyerror ("Missing interface name"); RECOVER;}
883 /* Store the location of the `}' when doing xrefs */
885 DECL_END_SOURCE_LINE (GET_CPC ()) =
886 EXPR_WFL_ADD_COL ($2.location, 1);
889 | OCB_TK class_body_declarations CCB_TK
891 /* Store the location of the `}' when doing xrefs */
893 DECL_END_SOURCE_LINE (GET_CPC ()) =
894 EXPR_WFL_ADD_COL ($3.location, 1);
899 class_body_declarations:
900 class_body_declaration
901 | class_body_declarations class_body_declaration
904 class_body_declaration:
905 class_member_declaration
907 | constructor_declaration
908 | block /* Added, JDK1.1, instance initializer */
910 if (!IS_EMPTY_STMT ($1))
912 TREE_CHAIN ($1) = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
913 SET_CPC_INSTANCE_INITIALIZER_STMT (ctxp, $1);
918 class_member_declaration:
921 | class_declaration /* Added, JDK1.1 inner classes */
922 { end_class_declaration (1); }
923 | interface_declaration /* Added, JDK1.1 inner interfaces */
924 { end_class_declaration (1); }
928 /* 19.8.2 Productions from 8.3: Field Declarations */
930 type variable_declarators SC_TK
931 { register_fields (0, $1, $2); }
932 | modifiers type variable_declarators SC_TK
935 ("Illegal modifier `%s' for field declaration",
936 $1, FIELD_MODIFIERS);
937 check_modifiers_consistency ($1);
938 register_fields ($1, $2, $3);
942 variable_declarators:
943 /* Should we use build_decl_list () instead ? FIXME */
944 variable_declarator /* Default rule */
945 | variable_declarators C_TK variable_declarator
946 { $$ = chainon ($1, $3); }
947 | variable_declarators C_TK error
948 {yyerror ("Missing term"); RECOVER;}
952 variable_declarator_id
953 { $$ = build_tree_list ($1, NULL_TREE); }
954 | variable_declarator_id ASSIGN_TK variable_initializer
956 if (java_error_count)
959 ($1, build_assignment ($2.token, $2.location, $1, $3));
961 | variable_declarator_id ASSIGN_TK error
963 yyerror ("Missing variable initializer");
964 $$ = build_tree_list ($1, NULL_TREE);
967 | variable_declarator_id ASSIGN_TK variable_initializer error
969 yyerror ("';' expected");
970 $$ = build_tree_list ($1, NULL_TREE);
975 variable_declarator_id:
977 | variable_declarator_id OSB_TK CSB_TK
978 { $$ = build_unresolved_array_type ($1); }
980 {yyerror ("Invalid declaration"); DRECOVER(vdi);}
981 | variable_declarator_id OSB_TK error
983 yyerror ("']' expected");
986 | variable_declarator_id CSB_TK error
987 {yyerror ("Unbalanced ']'"); DRECOVER(vdi);}
990 variable_initializer:
995 /* 19.8.3 Productions from 8.4: Method Declarations */
999 current_function_decl = $1;
1000 if (current_function_decl
1001 && TREE_CODE (current_function_decl) == FUNCTION_DECL)
1002 source_start_java_method (current_function_decl);
1004 current_function_decl = NULL_TREE;
1007 { finish_method_declaration ($3); }
1008 | method_header error
1009 {YYNOT_TWICE yyerror ("'{' expected"); RECOVER;}
1013 type method_declarator throws
1014 { $$ = method_header (0, $1, $2, $3); }
1015 | VOID_TK method_declarator throws
1016 { $$ = method_header (0, void_type_node, $2, $3); }
1017 | modifiers type method_declarator throws
1018 { $$ = method_header ($1, $2, $3, $4); }
1019 | modifiers VOID_TK method_declarator throws
1020 { $$ = method_header ($1, void_type_node, $3, $4); }
1023 yyerror ("Invalid method declaration, method name required");
1026 | modifiers type error
1028 yyerror ("Identifier expected");
1033 yyerror ("Identifier expected");
1036 | modifiers VOID_TK error
1038 yyerror ("Identifier expected");
1043 yyerror ("Invalid method declaration, return type required");
1049 identifier OP_TK CP_TK
1051 ctxp->formal_parameter_number = 0;
1052 $$ = method_declarator ($1, NULL_TREE);
1054 | identifier OP_TK formal_parameter_list CP_TK
1055 { $$ = method_declarator ($1, $3); }
1056 | method_declarator OSB_TK CSB_TK
1058 EXPR_WFL_LINECOL (wfl_operator) = $2.location;
1060 build_unresolved_array_type (TREE_PURPOSE ($1));
1061 parse_warning_context
1063 "Discouraged form of returned type specification");
1065 | identifier OP_TK error
1066 {yyerror ("')' expected"); DRECOVER(method_declarator);}
1067 | method_declarator OSB_TK error
1068 {yyerror ("']' expected"); RECOVER;}
1071 formal_parameter_list:
1074 ctxp->formal_parameter_number = 1;
1076 | formal_parameter_list C_TK formal_parameter
1078 ctxp->formal_parameter_number += 1;
1079 $$ = chainon ($1, $3);
1081 | formal_parameter_list C_TK error
1082 { yyerror ("Missing formal parameter term"); RECOVER; }
1086 type variable_declarator_id
1088 $$ = build_tree_list ($2, $1);
1090 | final type variable_declarator_id /* Added, JDK1.1 final parms */
1092 $$ = build_tree_list ($3, $2);
1093 ARG_FINAL_P ($$) = 1;
1097 yyerror ("Missing identifier"); RECOVER;
1102 yyerror ("Missing identifier"); RECOVER;
1110 check_modifiers ("Illegal modifier `%s'. Only `final' was expected here",
1112 if ($1 != ACC_FINAL)
1113 MODIFIER_WFL (FINAL_TK) = build_wfl_node (NULL_TREE);
1119 | THROWS_TK class_type_list
1122 {yyerror ("Missing class type term"); RECOVER;}
1127 { $$ = build_tree_list ($1, $1); }
1128 | class_type_list C_TK class_type
1129 { $$ = tree_cons ($3, $3, $1); }
1130 | class_type_list C_TK error
1131 {yyerror ("Missing class type term"); RECOVER;}
1136 | SC_TK { $$ = NULL_TREE; }
1139 /* 19.8.4 Productions from 8.5: Static Initializers */
1143 TREE_CHAIN ($2) = CPC_STATIC_INITIALIZER_STMT (ctxp);
1144 SET_CPC_STATIC_INITIALIZER_STMT (ctxp, $2);
1145 current_static_block = NULL_TREE;
1149 static: /* Test lval.sub_token here */
1152 check_modifiers ("Illegal modifier `%s' for static initializer", $1, ACC_STATIC);
1153 /* Can't have a static initializer in an innerclass */
1154 if ($1 | ACC_STATIC &&
1155 GET_CPC_LIST () && !TOPLEVEL_CLASS_DECL_P (GET_CPC ()))
1157 (MODIFIER_WFL (STATIC_TK),
1158 "Can't define static initializer in class `%s'. Static initializer can only be defined in top-level classes",
1159 IDENTIFIER_POINTER (DECL_NAME (GET_CPC ())));
1160 SOURCE_FRONTEND_DEBUG (("Modifiers: %d", $1));
1164 /* 19.8.5 Productions from 8.6: Constructor Declarations */
1165 constructor_declaration:
1168 current_function_decl = $1;
1169 source_start_java_method (current_function_decl);
1172 { finish_method_declaration ($3); }
1176 constructor_declarator throws
1177 { $$ = method_header (0, NULL_TREE, $1, $2); }
1178 | modifiers constructor_declarator throws
1179 { $$ = method_header ($1, NULL_TREE, $2, $3); }
1182 constructor_declarator:
1183 simple_name OP_TK CP_TK
1185 ctxp->formal_parameter_number = 0;
1186 $$ = method_declarator ($1, NULL_TREE);
1188 | simple_name OP_TK formal_parameter_list CP_TK
1189 { $$ = method_declarator ($1, $3); }
1193 /* Unlike regular method, we always need a complete (empty)
1194 body so we can safely perform all the required code
1195 addition (super invocation and field initialization) */
1196 block_begin constructor_block_end
1198 BLOCK_EXPR_BODY ($2) = build_java_empty_stmt ();
1201 | block_begin explicit_constructor_invocation constructor_block_end
1203 | block_begin block_statements constructor_block_end
1205 | block_begin explicit_constructor_invocation block_statements constructor_block_end
1209 constructor_block_end:
1213 /* Error recovery for that rule moved down expression_statement: rule. */
1214 explicit_constructor_invocation:
1215 this_or_super OP_TK CP_TK SC_TK
1217 $$ = build_method_invocation ($1, NULL_TREE);
1218 $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
1219 $$ = java_method_add_stmt (current_function_decl, $$);
1221 | this_or_super OP_TK argument_list CP_TK SC_TK
1223 $$ = build_method_invocation ($1, $3);
1224 $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
1225 $$ = java_method_add_stmt (current_function_decl, $$);
1227 /* Added, JDK1.1 inner classes. Modified because the rule
1228 'primary' couldn't work. */
1229 | name DOT_TK SUPER_TK OP_TK argument_list CP_TK SC_TK
1230 {$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
1231 | name DOT_TK SUPER_TK OP_TK CP_TK SC_TK
1232 {$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
1235 this_or_super: /* Added, simplifies error diagnostics */
1238 tree wfl = build_wfl_node (this_identifier_node);
1239 EXPR_WFL_LINECOL (wfl) = $1.location;
1244 tree wfl = build_wfl_node (super_identifier_node);
1245 EXPR_WFL_LINECOL (wfl) = $1.location;
1250 /* 19.9 Productions from 9: Interfaces */
1251 /* 19.9.1 Productions from 9.1: Interfaces Declarations */
1252 interface_declaration:
1253 INTERFACE_TK identifier
1254 { create_interface (0, $2, NULL_TREE); }
1257 | modifiers INTERFACE_TK identifier
1258 { create_interface ($1, $3, NULL_TREE); }
1261 | INTERFACE_TK identifier extends_interfaces
1262 { create_interface (0, $2, $3); }
1265 | modifiers INTERFACE_TK identifier extends_interfaces
1266 { create_interface ($1, $3, $4); }
1269 | INTERFACE_TK identifier error
1270 { yyerror ("'{' expected"); RECOVER; }
1271 | modifiers INTERFACE_TK identifier error
1272 { yyerror ("'{' expected"); RECOVER; }
1276 EXTENDS_TK interface_type
1278 ctxp->interface_number = 1;
1279 $$ = build_tree_list ($2, NULL_TREE);
1281 | extends_interfaces C_TK interface_type
1283 ctxp->interface_number++;
1284 $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
1287 {yyerror ("Invalid interface type"); RECOVER;}
1288 | extends_interfaces C_TK error
1289 {yyerror ("Missing term"); RECOVER;}
1295 | OCB_TK interface_member_declarations CCB_TK
1299 interface_member_declarations:
1300 interface_member_declaration
1301 | interface_member_declarations interface_member_declaration
1304 interface_member_declaration:
1305 constant_declaration
1306 | abstract_method_declaration
1307 | class_declaration /* Added, JDK1.1 inner classes */
1308 { end_class_declaration (1); }
1309 | interface_declaration /* Added, JDK1.1 inner interfaces */
1310 { end_class_declaration (1); }
1313 constant_declaration:
1317 abstract_method_declaration:
1320 check_abstract_method_header ($1);
1321 current_function_decl = NULL_TREE; /* FIXME ? */
1323 | method_header error
1324 {yyerror ("';' expected"); RECOVER;}
1327 /* 19.10 Productions from 10: Arrays */
1330 { $$ = build_new_array_init ($1.location, NULL_TREE); }
1331 | OCB_TK C_TK CCB_TK
1332 { $$ = build_new_array_init ($1.location, NULL_TREE); }
1333 | OCB_TK variable_initializers CCB_TK
1334 { $$ = build_new_array_init ($1.location, $2); }
1335 | OCB_TK variable_initializers C_TK CCB_TK
1336 { $$ = build_new_array_init ($1.location, $2); }
1339 variable_initializers:
1340 variable_initializer
1342 $$ = tree_cons (maybe_build_array_element_wfl ($1),
1345 | variable_initializers C_TK variable_initializer
1347 $$ = tree_cons (maybe_build_array_element_wfl ($3), $3, $1);
1349 | variable_initializers C_TK error
1350 {yyerror ("Missing term"); RECOVER;}
1353 /* 19.11 Production from 14: Blocks and Statements */
1355 block_begin block_end
1357 | block_begin block_statements block_end
1369 maybe_absorb_scoping_blocks ();
1370 /* Store the location of the `}' when doing xrefs */
1371 if (current_function_decl && flag_emit_xref)
1372 DECL_END_SOURCE_LINE (current_function_decl) =
1373 EXPR_WFL_ADD_COL ($1.location, 1);
1375 if (!BLOCK_SUBBLOCKS ($$))
1376 BLOCK_SUBBLOCKS ($$) = build_java_empty_stmt ();
1382 | block_statements block_statement
1386 local_variable_declaration_statement
1388 { java_method_add_stmt (current_function_decl, $1); }
1389 | class_declaration /* Added, JDK1.1 local classes */
1391 LOCAL_CLASS_P (TREE_TYPE (GET_CPC ())) = 1;
1392 end_class_declaration (1);
1396 local_variable_declaration_statement:
1397 local_variable_declaration SC_TK /* Can't catch missing ';' here */
1400 local_variable_declaration:
1401 type variable_declarators
1402 { declare_local_variables (0, $1, $2); }
1403 | final type variable_declarators /* Added, JDK1.1 final locals */
1404 { declare_local_variables ($1, $2, $3); }
1408 statement_without_trailing_substatement
1411 | if_then_else_statement
1414 { $$ = exit_block (); }
1418 statement_without_trailing_substatement
1419 | labeled_statement_nsi
1420 | if_then_else_statement_nsi
1421 | while_statement_nsi
1423 { $$ = exit_block (); }
1426 statement_without_trailing_substatement:
1429 | expression_statement
1433 | continue_statement
1435 | synchronized_statement
1444 if (flag_extraneous_semicolon
1445 && ! current_static_block
1446 && (! current_function_decl ||
1447 /* Verify we're not in a inner class declaration */
1448 (GET_CPC () != TYPE_NAME
1449 (DECL_CONTEXT (current_function_decl)))))
1452 EXPR_WFL_SET_LINECOL (wfl_operator, input_line, -1);
1453 parse_warning_context (wfl_operator, "An empty declaration is a deprecated feature that should not be used");
1455 $$ = build_java_empty_stmt ();
1460 identifier REL_CL_TK
1462 $$ = build_labeled_block (EXPR_WFL_LINECOL ($1),
1463 EXPR_WFL_NODE ($1));
1465 push_labeled_block ($$);
1466 PUSH_LABELED_BLOCK ($$);
1471 label_decl statement
1472 { $$ = finish_labeled_statement ($1, $2); }
1474 {yyerror ("':' expected"); RECOVER;}
1477 labeled_statement_nsi:
1478 label_decl statement_nsi
1479 { $$ = finish_labeled_statement ($1, $2); }
1482 /* We concentrate here a bunch of error handling rules that we couldn't write
1483 earlier, because expression_statement catches a missing ';'. */
1484 expression_statement:
1485 statement_expression SC_TK
1487 /* We have a statement. Generate a WFL around it so
1489 $$ = build_expr_wfl ($1, input_filename, input_line, 0);
1490 /* We know we have a statement, so set the debug
1491 info to be eventually generate here. */
1492 $$ = JAVA_MAYBE_GENERATE_DEBUG_INFO ($$);
1496 YYNOT_TWICE yyerror ("Invalid expression statement");
1497 DRECOVER (expr_stmt);
1501 YYNOT_TWICE yyerror ("Invalid expression statement");
1502 DRECOVER (expr_stmt);
1506 YYNOT_TWICE yyerror ("Invalid expression statement");
1507 DRECOVER (expr_stmt);
1509 | this_or_super OP_TK error
1510 {yyerror ("')' expected"); RECOVER;}
1511 | this_or_super OP_TK CP_TK error
1513 parse_ctor_invocation_error ();
1516 | this_or_super OP_TK argument_list error
1517 {yyerror ("')' expected"); RECOVER;}
1518 | this_or_super OP_TK argument_list CP_TK error
1520 parse_ctor_invocation_error ();
1523 | name DOT_TK SUPER_TK error
1524 {yyerror ("'(' expected"); RECOVER;}
1525 | name DOT_TK SUPER_TK OP_TK error
1526 {yyerror ("')' expected"); RECOVER;}
1527 | name DOT_TK SUPER_TK OP_TK argument_list error
1528 {yyerror ("')' expected"); RECOVER;}
1529 | name DOT_TK SUPER_TK OP_TK argument_list CP_TK error
1530 {yyerror ("';' expected"); RECOVER;}
1531 | name DOT_TK SUPER_TK OP_TK CP_TK error
1532 {yyerror ("';' expected"); RECOVER;}
1535 statement_expression:
1537 | pre_increment_expression
1538 | pre_decrement_expression
1539 | post_increment_expression
1540 | post_decrement_expression
1542 | class_instance_creation_expression
1546 IF_TK OP_TK expression CP_TK statement
1548 $$ = build_if_else_statement ($2.location, $3,
1552 {yyerror ("'(' expected"); RECOVER;}
1554 {yyerror ("Missing term"); RECOVER;}
1555 | IF_TK OP_TK expression error
1556 {yyerror ("')' expected"); RECOVER;}
1559 if_then_else_statement:
1560 IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement
1561 { $$ = build_if_else_statement ($2.location, $3, $5, $7); }
1564 if_then_else_statement_nsi:
1565 IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement_nsi
1566 { $$ = build_if_else_statement ($2.location, $3, $5, $7); }
1576 /* Make into "proper list" of COMPOUND_EXPRs.
1577 I.e. make the last statement also have its own
1579 maybe_absorb_scoping_blocks ();
1580 TREE_OPERAND ($1, 1) = exit_block ();
1581 $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $1);
1586 SWITCH_TK OP_TK expression CP_TK
1588 $$ = build3 (SWITCH_EXPR, NULL_TREE, $3,
1589 NULL_TREE, NULL_TREE);
1590 EXPR_WFL_LINECOL ($$) = $2.location;
1593 {yyerror ("'(' expected"); RECOVER;}
1594 | SWITCH_TK OP_TK error
1595 {yyerror ("Missing term or ')'"); DRECOVER(switch_statement);}
1596 | SWITCH_TK OP_TK expression CP_TK error
1597 {yyerror ("'{' expected"); RECOVER;}
1600 /* Default assignment is there to avoid type node on switch_block
1606 | OCB_TK switch_labels CCB_TK
1608 | OCB_TK switch_block_statement_groups CCB_TK
1610 | OCB_TK switch_block_statement_groups switch_labels CCB_TK
1614 switch_block_statement_groups:
1615 switch_block_statement_group
1616 | switch_block_statement_groups switch_block_statement_group
1619 switch_block_statement_group:
1620 switch_labels block_statements
1625 | switch_labels switch_label
1629 CASE_TK constant_expression REL_CL_TK
1631 tree lab = build1 (CASE_EXPR, NULL_TREE, $2);
1632 EXPR_WFL_LINECOL (lab) = $1.location;
1633 java_method_add_stmt (current_function_decl, lab);
1635 | DEFAULT_TK REL_CL_TK
1637 tree lab = make_node (DEFAULT_EXPR);
1638 EXPR_WFL_LINECOL (lab) = $1.location;
1639 java_method_add_stmt (current_function_decl, lab);
1642 {yyerror ("Missing or invalid constant expression"); RECOVER;}
1643 | CASE_TK constant_expression error
1644 {yyerror ("':' expected"); RECOVER;}
1646 {yyerror ("':' expected"); RECOVER;}
1650 WHILE_TK OP_TK expression CP_TK
1652 tree body = build_loop_body ($2.location, $3, 0);
1653 $$ = build_new_loop (body);
1658 while_expression statement
1659 { $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
1661 {YYERROR_NOW; yyerror ("'(' expected"); RECOVER;}
1662 | WHILE_TK OP_TK error
1663 {yyerror ("Missing term and ')' expected"); RECOVER;}
1664 | WHILE_TK OP_TK expression error
1665 {yyerror ("')' expected"); RECOVER;}
1668 while_statement_nsi:
1669 while_expression statement_nsi
1670 { $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
1676 tree body = build_loop_body (0, NULL_TREE, 1);
1677 $$ = build_new_loop (body);
1679 /* Need error handing here. FIXME */
1683 do_statement_begin statement WHILE_TK OP_TK expression CP_TK SC_TK
1684 { $$ = finish_loop_body ($4.location, $5, $2, 1); }
1688 for_begin SC_TK expression SC_TK for_update CP_TK statement
1690 if (CONSTANT_CLASS_P ($3))
1691 $3 = build_wfl_node ($3);
1692 $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);
1694 | for_begin SC_TK SC_TK for_update CP_TK statement
1696 $$ = finish_for_loop (0, NULL_TREE, $4, $6);
1697 /* We have not condition, so we get rid of the EXIT_EXPR */
1698 LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) =
1699 build_java_empty_stmt ();
1701 | for_begin SC_TK error
1702 {yyerror ("Invalid control expression"); RECOVER;}
1703 | for_begin SC_TK expression SC_TK error
1704 {yyerror ("Invalid update expression"); RECOVER;}
1705 | for_begin SC_TK SC_TK error
1706 {yyerror ("Invalid update expression"); RECOVER;}
1710 for_begin SC_TK expression SC_TK for_update CP_TK statement_nsi
1711 { $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);}
1712 | for_begin SC_TK SC_TK for_update CP_TK statement_nsi
1714 $$ = finish_for_loop (0, NULL_TREE, $4, $6);
1715 /* We have not condition, so we get rid of the EXIT_EXPR */
1716 LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) =
1717 build_java_empty_stmt ();
1724 /* This scope defined for local variable that may be
1725 defined within the scope of the for loop */
1729 {yyerror ("'(' expected"); DRECOVER(for_1);}
1730 | FOR_TK OP_TK error
1731 {yyerror ("Invalid init statement"); RECOVER;}
1737 /* We now declare the loop body. The loop is
1738 declared as a for loop. */
1739 tree body = build_loop_body (0, NULL_TREE, 0);
1740 $$ = build_new_loop (body);
1741 FOR_LOOP_P ($$) = 1;
1742 /* The loop is added to the current block the for
1743 statement is defined within */
1744 java_method_add_stmt (current_function_decl, $$);
1747 for_init: /* Can be empty */
1748 { $$ = build_java_empty_stmt (); }
1749 | statement_expression_list
1751 /* Init statement recorded within the previously
1752 defined block scope */
1753 $$ = java_method_add_stmt (current_function_decl, $1);
1755 | local_variable_declaration
1757 /* Local variable are recorded within the previously
1758 defined block scope */
1761 | statement_expression_list error
1762 {yyerror ("';' expected"); DRECOVER(for_init_1);}
1765 for_update: /* Can be empty */
1766 {$$ = build_java_empty_stmt ();}
1767 | statement_expression_list
1768 { $$ = build_debugable_stmt (BUILD_LOCATION (), $1); }
1771 statement_expression_list:
1772 statement_expression
1773 { $$ = add_stmt_to_compound (NULL_TREE, NULL_TREE, $1); }
1774 | statement_expression_list C_TK statement_expression
1775 { $$ = add_stmt_to_compound ($1, NULL_TREE, $3); }
1776 | statement_expression_list C_TK error
1777 {yyerror ("Missing term"); RECOVER;}
1782 { $$ = build_bc_statement ($1.location, 1, NULL_TREE); }
1783 | BREAK_TK identifier SC_TK
1784 { $$ = build_bc_statement ($1.location, 1, $2); }
1786 {yyerror ("Missing term"); RECOVER;}
1787 | BREAK_TK identifier error
1788 {yyerror ("';' expected"); RECOVER;}
1793 { $$ = build_bc_statement ($1.location, 0, NULL_TREE); }
1794 | CONTINUE_TK identifier SC_TK
1795 { $$ = build_bc_statement ($1.location, 0, $2); }
1797 {yyerror ("Missing term"); RECOVER;}
1798 | CONTINUE_TK identifier error
1799 {yyerror ("';' expected"); RECOVER;}
1804 { $$ = build_return ($1.location, NULL_TREE); }
1805 | RETURN_TK expression SC_TK
1806 { $$ = build_return ($1.location, $2); }
1808 {yyerror ("Missing term"); RECOVER;}
1809 | RETURN_TK expression error
1810 {yyerror ("';' expected"); RECOVER;}
1814 THROW_TK expression SC_TK
1816 $$ = build1 (THROW_EXPR, NULL_TREE, $2);
1817 EXPR_WFL_LINECOL ($$) = $1.location;
1820 {yyerror ("Missing term"); RECOVER;}
1821 | THROW_TK expression error
1822 {yyerror ("';' expected"); RECOVER;}
1826 ASSERT_TK expression REL_CL_TK expression SC_TK
1828 $$ = build_assertion ($1.location, $2, $4);
1830 | ASSERT_TK expression SC_TK
1832 $$ = build_assertion ($1.location, $2, NULL_TREE);
1835 {yyerror ("Missing term"); RECOVER;}
1836 | ASSERT_TK expression error
1837 {yyerror ("';' expected"); RECOVER;}
1840 synchronized_statement:
1841 synchronized OP_TK expression CP_TK block
1843 $$ = build2 (SYNCHRONIZED_EXPR, NULL_TREE, $3, $5);
1844 EXPR_WFL_LINECOL ($$) =
1845 EXPR_WFL_LINECOL (MODIFIER_WFL (SYNCHRONIZED_TK));
1847 | synchronized OP_TK expression CP_TK error
1848 {yyerror ("'{' expected"); RECOVER;}
1849 | synchronized error
1850 {yyerror ("'(' expected"); RECOVER;}
1851 | synchronized OP_TK error CP_TK
1852 {yyerror ("Missing term"); RECOVER;}
1853 | synchronized OP_TK error
1854 {yyerror ("Missing term"); RECOVER;}
1861 "Illegal modifier `%s'. Only `synchronized' was expected here",
1862 $1, ACC_SYNCHRONIZED);
1863 if ($1 != ACC_SYNCHRONIZED)
1864 MODIFIER_WFL (SYNCHRONIZED_TK) =
1865 build_wfl_node (NULL_TREE);
1870 TRY_TK block catches
1871 { $$ = build_try_statement ($1.location, $2, $3); }
1872 | TRY_TK block finally
1873 { $$ = build_try_finally_statement ($1.location, $2, $3); }
1874 | TRY_TK block catches finally
1875 { $$ = build_try_finally_statement
1876 ($1.location, build_try_statement ($1.location,
1880 {yyerror ("'{' expected"); DRECOVER (try_statement);}
1885 | catches catch_clause
1887 TREE_CHAIN ($2) = $1;
1893 catch_clause_parameter block
1895 java_method_add_stmt (current_function_decl, $2);
1901 catch_clause_parameter:
1902 CATCH_TK OP_TK formal_parameter CP_TK
1904 /* We add a block to define a scope for
1905 formal_parameter (CCBP). The formal parameter is
1906 declared initialized by the appropriate function
1912 ccpb = enter_block ();
1913 init = build_assignment
1914 (ASSIGN_TK, $2.location, TREE_PURPOSE ($3),
1915 build0 (JAVA_EXC_OBJ_EXPR, ptr_type_node));
1916 declare_local_variables (0, TREE_VALUE ($3),
1918 (TREE_PURPOSE ($3), init));
1919 $$ = build1 (JAVA_CATCH_EXPR, NULL_TREE, ccpb);
1920 EXPR_WFL_LINECOL ($$) = $1.location;
1924 $$ = error_mark_node;
1928 {yyerror ("'(' expected"); RECOVER; $$ = NULL_TREE;}
1929 | CATCH_TK OP_TK error
1931 yyerror ("Missing term or ')' expected");
1932 RECOVER; $$ = NULL_TREE;
1934 | CATCH_TK OP_TK error CP_TK /* That's for () */
1935 {yyerror ("Missing term"); RECOVER; $$ = NULL_TREE;}
1942 {yyerror ("'{' expected"); RECOVER; }
1945 /* 19.12 Production from 15: Expressions */
1947 primary_no_new_array
1948 | array_creation_uninitialized
1949 | array_creation_initialized
1952 primary_no_new_array:
1955 { $$ = build_this ($1.location); }
1956 | OP_TK expression CP_TK
1958 | class_instance_creation_expression
1963 /* Added, JDK1.1 inner classes. Documentation is wrong
1964 refering to a 'ClassName' (class_name) rule that doesn't
1965 exist. Used name: instead. */
1966 | name DOT_TK THIS_TK
1968 tree wfl = build_wfl_node (this_identifier_node);
1969 $$ = make_qualified_primary ($1, wfl, EXPR_WFL_LINECOL ($1));
1971 | OP_TK expression error
1972 {yyerror ("')' expected"); RECOVER;}
1974 {yyerror ("'class' or 'this' expected" ); RECOVER;}
1975 | primitive_type DOT_TK error
1976 {yyerror ("'class' expected" ); RECOVER;}
1977 | VOID_TK DOT_TK error
1978 {yyerror ("'class' expected" ); RECOVER;}
1982 name DOT_TK CLASS_TK
1983 { $$ = build_incomplete_class_ref ($2.location, $1); }
1984 | array_type DOT_TK CLASS_TK
1985 { $$ = build_incomplete_class_ref ($2.location, $1); }
1986 | primitive_type DOT_TK CLASS_TK
1987 { $$ = build_incomplete_class_ref ($2.location, $1); }
1988 | VOID_TK DOT_TK CLASS_TK
1990 $$ = build_incomplete_class_ref ($2.location,
1995 class_instance_creation_expression:
1996 NEW_TK class_type OP_TK argument_list CP_TK
1997 { $$ = build_new_invocation ($2, $4); }
1998 | NEW_TK class_type OP_TK CP_TK
1999 { $$ = build_new_invocation ($2, NULL_TREE); }
2000 | anonymous_class_creation
2001 /* Added, JDK1.1 inner classes, modified to use name or
2002 primary instead of primary solely which couldn't work in
2004 | something_dot_new identifier OP_TK CP_TK
2006 tree ctor = build_new_invocation ($2, NULL_TREE);
2007 $$ = make_qualified_primary ($1, ctor,
2008 EXPR_WFL_LINECOL ($1));
2010 | something_dot_new identifier OP_TK CP_TK class_body
2011 | something_dot_new identifier OP_TK argument_list CP_TK
2013 tree ctor = build_new_invocation ($2, $4);
2014 $$ = make_qualified_primary ($1, ctor,
2015 EXPR_WFL_LINECOL ($1));
2017 | something_dot_new identifier OP_TK argument_list CP_TK class_body
2018 | NEW_TK error SC_TK
2019 {yyerror ("'(' expected"); DRECOVER(new_1);}
2020 | NEW_TK class_type error
2021 {yyerror ("'(' expected"); RECOVER;}
2022 | NEW_TK class_type OP_TK error
2023 {yyerror ("')' or term expected"); RECOVER;}
2024 | NEW_TK class_type OP_TK argument_list error
2025 {yyerror ("')' expected"); RECOVER;}
2026 | something_dot_new error
2027 {YYERROR_NOW; yyerror ("Identifier expected"); RECOVER;}
2028 | something_dot_new identifier error
2029 {yyerror ("'(' expected"); RECOVER;}
2032 /* Created after JDK1.1 rules originally added to
2033 class_instance_creation_expression, but modified to use
2034 'class_type' instead of 'TypeName' (type_name) which is mentioned
2035 in the documentation but doesn't exist. */
2037 anonymous_class_creation:
2038 NEW_TK class_type OP_TK argument_list CP_TK
2039 { create_anonymous_class ($2); }
2042 tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
2043 EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);
2045 end_class_declaration (1);
2047 /* Now we can craft the new expression */
2048 $$ = build_new_invocation (id, $4);
2050 /* Note that we can't possibly be here if
2051 `class_type' is an interface (in which case the
2052 anonymous class extends Object and implements
2053 `class_type', hence its constructor can't have
2056 /* Otherwise, the innerclass must feature a
2057 constructor matching `argument_list'. Anonymous
2058 classes are a bit special: it's impossible to
2059 define constructor for them, hence constructors
2060 must be generated following the hints provided by
2061 the `new' expression. Whether a super constructor
2062 of that nature exists or not is to be verified
2063 later on in verify_constructor_super.
2065 It's during the expansion of a `new' statement
2066 refering to an anonymous class that a ctor will
2067 be generated for the anonymous class, with the
2071 | NEW_TK class_type OP_TK CP_TK
2072 { create_anonymous_class ($2); }
2075 tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
2076 EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);
2078 end_class_declaration (1);
2080 /* Now we can craft the new expression. The
2081 statement doesn't need to be remember so that a
2082 constructor can be generated, since its signature
2083 is already known. */
2084 $$ = build_new_invocation (id, NULL_TREE);
2088 something_dot_new: /* Added, not part of the specs. */
2091 | primary DOT_TK NEW_TK
2098 $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
2099 ctxp->formal_parameter_number = 1;
2101 | argument_list C_TK expression
2103 ctxp->formal_parameter_number += 1;
2104 $$ = tree_cons (NULL_TREE, $3, $1);
2106 | argument_list C_TK error
2107 {yyerror ("Missing term"); RECOVER;}
2110 array_creation_uninitialized:
2111 NEW_TK primitive_type dim_exprs
2112 { $$ = build_newarray_node ($2, $3, 0); }
2113 | NEW_TK class_or_interface_type dim_exprs
2114 { $$ = build_newarray_node ($2, $3, 0); }
2115 | NEW_TK primitive_type dim_exprs dims
2116 { $$ = build_newarray_node ($2, $3, pop_current_osb (ctxp));}
2117 | NEW_TK class_or_interface_type dim_exprs dims
2118 { $$ = build_newarray_node ($2, $3, pop_current_osb (ctxp));}
2119 | NEW_TK error CSB_TK
2120 {yyerror ("'[' expected"); DRECOVER ("]");}
2121 | NEW_TK error OSB_TK
2122 {yyerror ("']' expected"); RECOVER;}
2125 array_creation_initialized:
2126 /* Added, JDK1.1 anonymous array. Initial documentation rule
2128 NEW_TK class_or_interface_type dims array_initializer
2131 int osb = pop_current_osb (ctxp);
2133 obstack_grow (&temporary_obstack, "[]", 2);
2134 obstack_1grow (&temporary_obstack, '\0');
2135 sig = obstack_finish (&temporary_obstack);
2136 $$ = build3 (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE,
2137 $2, get_identifier (sig), $4);
2139 | NEW_TK primitive_type dims array_initializer
2141 int osb = pop_current_osb (ctxp);
2144 type = build_java_array_type (type, -1);
2145 $$ = build3 (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE,
2146 build_pointer_type (type), NULL_TREE, $4);
2148 | NEW_TK error CSB_TK
2149 {yyerror ("'[' expected"); DRECOVER ("]");}
2150 | NEW_TK error OSB_TK
2151 {yyerror ("']' expected"); RECOVER;}
2156 { $$ = build_tree_list (NULL_TREE, $1); }
2157 | dim_exprs dim_expr
2158 { $$ = tree_cons (NULL_TREE, $2, $$); }
2162 OSB_TK expression CSB_TK
2164 if (JNUMERIC_TYPE_P (TREE_TYPE ($2)))
2166 $2 = build_wfl_node ($2);
2167 TREE_TYPE ($2) = NULL_TREE;
2169 EXPR_WFL_LINECOL ($2) = $1.location;
2172 | OSB_TK expression error
2173 {yyerror ("']' expected"); RECOVER;}
2176 yyerror ("Missing term");
2177 yyerror ("']' expected");
2186 /* If not initialized, allocate memory for the osb
2188 if (!ctxp->osb_limit)
2190 allocate = ctxp->osb_limit = 32;
2191 ctxp->osb_depth = -1;
2193 /* If capacity overflown, reallocate a bigger chunk */
2194 else if (ctxp->osb_depth+1 == ctxp->osb_limit)
2195 allocate = ctxp->osb_limit << 1;
2199 allocate *= sizeof (int);
2200 if (ctxp->osb_number)
2201 ctxp->osb_number = xrealloc (ctxp->osb_number,
2204 ctxp->osb_number = xmalloc (allocate);
2207 CURRENT_OSB (ctxp) = 1;
2209 | dims OSB_TK CSB_TK
2210 { CURRENT_OSB (ctxp)++; }
2212 { yyerror ("']' expected"); RECOVER;}
2216 primary DOT_TK identifier
2217 { $$ = make_qualified_primary ($1, $3, $2.location); }
2218 /* FIXME - REWRITE TO:
2219 { $$ = build_binop (COMPONENT_REF, $2.location, $1, $3); } */
2220 | SUPER_TK DOT_TK identifier
2222 tree super_wfl = build_wfl_node (super_identifier_node);
2223 EXPR_WFL_LINECOL (super_wfl) = $1.location;
2224 $$ = make_qualified_name (super_wfl, $3, $2.location);
2227 {yyerror ("Field expected"); DRECOVER (super_field_acces);}
2232 { $$ = build_method_invocation ($1, NULL_TREE); }
2233 | name OP_TK argument_list CP_TK
2234 { $$ = build_method_invocation ($1, $3); }
2235 | primary DOT_TK identifier OP_TK CP_TK
2237 if (TREE_CODE ($1) == THIS_EXPR)
2238 $$ = build_this_super_qualified_invocation
2239 (1, $3, NULL_TREE, 0, $2.location);
2242 tree invok = build_method_invocation ($3, NULL_TREE);
2243 $$ = make_qualified_primary ($1, invok, $2.location);
2246 | primary DOT_TK identifier OP_TK argument_list CP_TK
2248 if (TREE_CODE ($1) == THIS_EXPR)
2249 $$ = build_this_super_qualified_invocation
2250 (1, $3, $5, 0, $2.location);
2253 tree invok = build_method_invocation ($3, $5);
2254 $$ = make_qualified_primary ($1, invok, $2.location);
2257 | SUPER_TK DOT_TK identifier OP_TK CP_TK
2259 $$ = build_this_super_qualified_invocation
2260 (0, $3, NULL_TREE, $1.location, $2.location);
2262 | SUPER_TK DOT_TK identifier OP_TK argument_list CP_TK
2264 $$ = build_this_super_qualified_invocation
2265 (0, $3, $5, $1.location, $2.location);
2267 /* Screws up thing. I let it here until I'm convinced it can
2269 | primary DOT_TK error
2270 {yyerror ("'(' expected"); DRECOVER(bad);} */
2271 | SUPER_TK DOT_TK error CP_TK
2272 { yyerror ("'(' expected"); DRECOVER (method_invocation); }
2273 | SUPER_TK DOT_TK error DOT_TK
2274 { yyerror ("'(' expected"); DRECOVER (method_invocation); }
2278 name OSB_TK expression CSB_TK
2279 { $$ = build_array_ref ($2.location, $1, $3); }
2280 | primary_no_new_array OSB_TK expression CSB_TK
2281 { $$ = build_array_ref ($2.location, $1, $3); }
2282 | array_creation_initialized OSB_TK expression CSB_TK
2283 { $$ = build_array_ref ($2.location, $1, $3); }
2286 yyerror ("Missing term and ']' expected");
2287 DRECOVER(array_access);
2289 | name OSB_TK expression error
2291 yyerror ("']' expected");
2292 DRECOVER(array_access);
2294 | primary_no_new_array OSB_TK error
2296 yyerror ("Missing term and ']' expected");
2297 DRECOVER(array_access);
2299 | primary_no_new_array OSB_TK expression error
2301 yyerror ("']' expected");
2302 DRECOVER(array_access);
2304 | array_creation_initialized OSB_TK error
2306 yyerror ("Missing term and ']' expected");
2307 DRECOVER(array_access);
2309 | array_creation_initialized OSB_TK expression error
2311 yyerror ("']' expected");
2312 DRECOVER(array_access);
2319 | post_increment_expression
2320 | post_decrement_expression
2323 post_increment_expression:
2324 postfix_expression INCR_TK
2325 { $$ = build_incdec ($2.token, $2.location, $1, 1); }
2328 post_decrement_expression:
2329 postfix_expression DECR_TK
2330 { $$ = build_incdec ($2.token, $2.location, $1, 1); }
2333 trap_overflow_corner_case:
2334 pre_increment_expression
2335 | pre_decrement_expression
2336 | PLUS_TK unary_expression
2337 {$$ = build_unaryop ($1.token, $1.location, $2); }
2338 | unary_expression_not_plus_minus
2340 {yyerror ("Missing term"); RECOVER}
2344 trap_overflow_corner_case
2346 error_if_numeric_overflow ($1);
2349 | MINUS_TK trap_overflow_corner_case
2350 {$$ = build_unaryop ($1.token, $1.location, $2); }
2352 {yyerror ("Missing term"); RECOVER}
2355 pre_increment_expression:
2356 INCR_TK unary_expression
2357 {$$ = build_incdec ($1.token, $1.location, $2, 0); }
2359 {yyerror ("Missing term"); RECOVER}
2362 pre_decrement_expression:
2363 DECR_TK unary_expression
2364 {$$ = build_incdec ($1.token, $1.location, $2, 0); }
2366 {yyerror ("Missing term"); RECOVER}
2369 unary_expression_not_plus_minus:
2371 | NOT_TK unary_expression
2372 {$$ = build_unaryop ($1.token, $1.location, $2); }
2373 | NEG_TK unary_expression
2374 {$$ = build_unaryop ($1.token, $1.location, $2); }
2377 {yyerror ("Missing term"); RECOVER}
2379 {yyerror ("Missing term"); RECOVER}
2382 cast_expression: /* Error handling here is potentially weak */
2383 OP_TK primitive_type dims CP_TK unary_expression
2386 int osb = pop_current_osb (ctxp);
2388 type = build_java_array_type (type, -1);
2389 $$ = build_cast ($1.location, type, $5);
2391 | OP_TK primitive_type CP_TK unary_expression
2392 { $$ = build_cast ($1.location, $2, $4); }
2393 | OP_TK expression CP_TK unary_expression_not_plus_minus
2394 { $$ = build_cast ($1.location, $2, $4); }
2395 | OP_TK name dims CP_TK unary_expression_not_plus_minus
2398 int osb = pop_current_osb (ctxp);
2399 obstack_grow (&temporary_obstack,
2400 IDENTIFIER_POINTER (EXPR_WFL_NODE ($2)),
2401 IDENTIFIER_LENGTH (EXPR_WFL_NODE ($2)));
2403 obstack_grow (&temporary_obstack, "[]", 2);
2404 obstack_1grow (&temporary_obstack, '\0');
2405 ptr = obstack_finish (&temporary_obstack);
2406 EXPR_WFL_NODE ($2) = get_identifier (ptr);
2407 $$ = build_cast ($1.location, $2, $5);
2409 | OP_TK primitive_type OSB_TK error
2410 {yyerror ("']' expected, invalid type expression");}
2413 YYNOT_TWICE yyerror ("Invalid type expression"); RECOVER;
2416 | OP_TK primitive_type dims CP_TK error
2417 {yyerror ("Missing term"); RECOVER;}
2418 | OP_TK primitive_type CP_TK error
2419 {yyerror ("Missing term"); RECOVER;}
2420 | OP_TK name dims CP_TK error
2421 {yyerror ("Missing term"); RECOVER;}
2424 multiplicative_expression:
2426 | multiplicative_expression MULT_TK unary_expression
2428 $$ = build_binop (BINOP_LOOKUP ($2.token),
2429 $2.location, $1, $3);
2431 | multiplicative_expression DIV_TK unary_expression
2433 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2436 | multiplicative_expression REM_TK unary_expression
2438 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2441 | multiplicative_expression MULT_TK error
2442 {yyerror ("Missing term"); RECOVER;}
2443 | multiplicative_expression DIV_TK error
2444 {yyerror ("Missing term"); RECOVER;}
2445 | multiplicative_expression REM_TK error
2446 {yyerror ("Missing term"); RECOVER;}
2449 additive_expression:
2450 multiplicative_expression
2451 | additive_expression PLUS_TK multiplicative_expression
2453 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2456 | additive_expression MINUS_TK multiplicative_expression
2458 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2461 | additive_expression PLUS_TK error
2462 {yyerror ("Missing term"); RECOVER;}
2463 | additive_expression MINUS_TK error
2464 {yyerror ("Missing term"); RECOVER;}
2469 | shift_expression LS_TK additive_expression
2471 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2474 | shift_expression SRS_TK additive_expression
2476 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2479 | shift_expression ZRS_TK additive_expression
2481 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2484 | shift_expression LS_TK error
2485 {yyerror ("Missing term"); RECOVER;}
2486 | shift_expression SRS_TK error
2487 {yyerror ("Missing term"); RECOVER;}
2488 | shift_expression ZRS_TK error
2489 {yyerror ("Missing term"); RECOVER;}
2492 relational_expression:
2494 | relational_expression LT_TK shift_expression
2496 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2499 | relational_expression GT_TK shift_expression
2501 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2504 | relational_expression LTE_TK shift_expression
2506 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2509 | relational_expression GTE_TK shift_expression
2511 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2514 | relational_expression INSTANCEOF_TK reference_type
2515 { $$ = build_binop (INSTANCEOF_EXPR, $2.location, $1, $3); }
2516 | relational_expression LT_TK error
2517 {yyerror ("Missing term"); RECOVER;}
2518 | relational_expression GT_TK error
2519 {yyerror ("Missing term"); RECOVER;}
2520 | relational_expression LTE_TK error
2521 {yyerror ("Missing term"); RECOVER;}
2522 | relational_expression GTE_TK error
2523 {yyerror ("Missing term"); RECOVER;}
2524 | relational_expression INSTANCEOF_TK error
2525 {yyerror ("Invalid reference type"); RECOVER;}
2528 equality_expression:
2529 relational_expression
2530 | equality_expression EQ_TK relational_expression
2532 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2535 | equality_expression NEQ_TK relational_expression
2537 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2540 | equality_expression EQ_TK error
2541 {yyerror ("Missing term"); RECOVER;}
2542 | equality_expression NEQ_TK error
2543 {yyerror ("Missing term"); RECOVER;}
2548 | and_expression AND_TK equality_expression
2550 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2553 | and_expression AND_TK error
2554 {yyerror ("Missing term"); RECOVER;}
2557 exclusive_or_expression:
2559 | exclusive_or_expression XOR_TK and_expression
2561 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2564 | exclusive_or_expression XOR_TK error
2565 {yyerror ("Missing term"); RECOVER;}
2568 inclusive_or_expression:
2569 exclusive_or_expression
2570 | inclusive_or_expression OR_TK exclusive_or_expression
2572 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2575 | inclusive_or_expression OR_TK error
2576 {yyerror ("Missing term"); RECOVER;}
2579 conditional_and_expression:
2580 inclusive_or_expression
2581 | conditional_and_expression BOOL_AND_TK inclusive_or_expression
2583 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2586 | conditional_and_expression BOOL_AND_TK error
2587 {yyerror ("Missing term"); RECOVER;}
2590 conditional_or_expression:
2591 conditional_and_expression
2592 | conditional_or_expression BOOL_OR_TK conditional_and_expression
2594 $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
2597 | conditional_or_expression BOOL_OR_TK error
2598 {yyerror ("Missing term"); RECOVER;}
2601 conditional_expression: /* Error handling here is weak */
2602 conditional_or_expression
2603 | conditional_or_expression REL_QM_TK expression REL_CL_TK conditional_expression
2605 $$ = build3 (CONDITIONAL_EXPR, NULL_TREE, $1, $3, $5);
2606 EXPR_WFL_LINECOL ($$) = $2.location;
2608 | conditional_or_expression REL_QM_TK REL_CL_TK error
2611 yyerror ("Missing term");
2614 | conditional_or_expression REL_QM_TK error
2615 {yyerror ("Missing term"); DRECOVER (2);}
2616 | conditional_or_expression REL_QM_TK expression REL_CL_TK error
2617 {yyerror ("Missing term"); DRECOVER (3);}
2620 assignment_expression:
2621 conditional_expression
2626 left_hand_side assignment_operator assignment_expression
2627 { $$ = build_assignment ($2.token, $2.location, $1, $3); }
2628 | left_hand_side assignment_operator error
2630 YYNOT_TWICE yyerror ("Missing term");
2641 assignment_operator:
2647 assignment_expression
2650 constant_expression:
2656 /* Helper function to retrieve an OSB count. Should be used when the
2657 `dims:' rule is being used. */
2660 pop_current_osb (struct parser_ctxt *ctxp)
2664 if (ctxp->osb_depth < 0)
2667 to_return = CURRENT_OSB (ctxp);
2675 /* This section of the code deal with save/restoring parser contexts.
2676 Add mode documentation here. FIXME */
2678 /* Helper function. Create a new parser context. With
2679 COPY_FROM_PREVIOUS set to a nonzero value, content of the previous
2680 context is copied, otherwise, the new context is zeroed. The newly
2681 created context becomes the current one. */
2684 create_new_parser_context (int copy_from_previous)
2686 struct parser_ctxt *new;
2688 new = ggc_alloc (sizeof (struct parser_ctxt));
2689 if (copy_from_previous)
2691 memcpy (new, ctxp, sizeof (struct parser_ctxt));
2692 /* This flag, indicating the context saves global values,
2693 should only be set by java_parser_context_save_global. */
2694 new->saved_data_ctx = 0;
2697 memset (new, 0, sizeof (struct parser_ctxt));
2703 /* Create a new parser context and make it the current one. */
2706 java_push_parser_context (void)
2708 create_new_parser_context (0);
2712 java_pop_parser_context (int generate)
2715 struct parser_ctxt *toFree, *next;
2724 input_line = ctxp->lineno;
2725 current_class = ctxp->class_type;
2728 /* If the old and new lexers differ, then free the old one. */
2729 if (ctxp->lexer && next && ctxp->lexer != next->lexer)
2730 java_destroy_lexer (ctxp->lexer);
2732 /* Set the single import class file flag to 0 for the current list
2733 of imported things */
2734 for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
2735 IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_VALUE (current)) = 0;
2737 /* And restore those of the previous context */
2738 if ((ctxp = next)) /* Assignment is really meant here */
2739 for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
2740 IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_VALUE (current)) = 1;
2742 /* If we pushed a context to parse a class intended to be generated,
2743 we keep it so we can remember the class. What we could actually
2744 do is to just update a list of class names. */
2747 toFree->next = ctxp_for_generation;
2748 ctxp_for_generation = toFree;
2752 /* Create a parser context for the use of saving some global
2756 java_parser_context_save_global (void)
2760 java_push_parser_context ();
2761 ctxp->saved_data_ctx = 1;
2764 /* If this context already stores data, create a new one suitable
2765 for data storage. */
2766 else if (ctxp->saved_data)
2768 create_new_parser_context (1);
2769 ctxp->saved_data_ctx = 1;
2772 ctxp->lineno = input_line;
2773 ctxp->class_type = current_class;
2774 ctxp->filename = input_filename;
2775 ctxp->function_decl = current_function_decl;
2776 ctxp->saved_data = 1;
2779 /* Restore some global variables from the previous context. Make the
2780 previous context the current one. */
2783 java_parser_context_restore_global (void)
2785 input_line = ctxp->lineno;
2786 current_class = ctxp->class_type;
2787 input_filename = ctxp->filename;
2789 EXPR_WFL_FILENAME_NODE (wfl_operator) = get_identifier (input_filename);
2790 current_function_decl = ctxp->function_decl;
2791 ctxp->saved_data = 0;
2792 if (ctxp->saved_data_ctx)
2793 java_pop_parser_context (0);
2796 /* Suspend vital data for the current class/function being parsed so
2797 that an other class can be parsed. Used to let local/anonymous
2798 classes be parsed. */
2801 java_parser_context_suspend (void)
2803 /* This makes debugging through java_debug_context easier */
2804 static const char *const name = "<inner buffer context>";
2806 /* Duplicate the previous context, use it to save the globals we're
2808 create_new_parser_context (1);
2809 ctxp->function_decl = current_function_decl;
2810 ctxp->class_type = current_class;
2812 /* Then create a new context which inherits all data from the
2813 previous one. This will be the new current context */
2814 create_new_parser_context (1);
2816 /* Help debugging */
2817 ctxp->next->filename = name;
2820 /* Resume vital data for the current class/function being parsed so
2821 that an other class can be parsed. Used to let local/anonymous
2822 classes be parsed. The trick is the data storing file position
2823 informations must be restored to their current value, so parsing
2824 can resume as if no context was ever saved. */
2827 java_parser_context_resume (void)
2829 struct parser_ctxt *old = ctxp; /* This one is to be discarded */
2830 struct parser_ctxt *saver = old->next; /* This one contain saved info */
2831 struct parser_ctxt *restored = saver->next; /* This one is the old current */
2833 /* We need to inherit the list of classes to complete/generate */
2834 restored->classd_list = old->classd_list;
2835 restored->class_list = old->class_list;
2837 /* Restore the current class and function from the saver */
2838 current_class = saver->class_type;
2839 current_function_decl = saver->function_decl;
2841 /* Retrieve the restored context */
2844 /* Re-installed the data for the parsing to carry on */
2845 memcpy (&ctxp->marker_begining, &old->marker_begining,
2846 (size_t)(&ctxp->marker_end - &ctxp->marker_begining));
2849 /* Add a new anchor node to which all statement(s) initializing static
2850 and non static initialized upon declaration field(s) will be
2854 java_parser_context_push_initialized_field (void)
2858 node = build_tree_list (NULL_TREE, NULL_TREE);
2859 TREE_CHAIN (node) = CPC_STATIC_INITIALIZER_LIST (ctxp);
2860 CPC_STATIC_INITIALIZER_LIST (ctxp) = node;
2862 node = build_tree_list (NULL_TREE, NULL_TREE);
2863 TREE_CHAIN (node) = CPC_INITIALIZER_LIST (ctxp);
2864 CPC_INITIALIZER_LIST (ctxp) = node;
2866 node = build_tree_list (NULL_TREE, NULL_TREE);
2867 TREE_CHAIN (node) = CPC_INSTANCE_INITIALIZER_LIST (ctxp);
2868 CPC_INSTANCE_INITIALIZER_LIST (ctxp) = node;
2871 /* Pop the lists of initialized field. If this lists aren't empty,
2872 remember them so we can use it to create and populate the finit$
2873 or <clinit> functions. */
2876 java_parser_context_pop_initialized_field (void)
2879 tree class_type = TREE_TYPE (GET_CPC ());
2881 if (CPC_INITIALIZER_LIST (ctxp))
2883 stmts = CPC_INITIALIZER_STMT (ctxp);
2884 CPC_INITIALIZER_LIST (ctxp) = TREE_CHAIN (CPC_INITIALIZER_LIST (ctxp));
2885 if (stmts && !java_error_count)
2886 TYPE_FINIT_STMT_LIST (class_type) = reorder_static_initialized (stmts);
2889 if (CPC_STATIC_INITIALIZER_LIST (ctxp))
2891 stmts = CPC_STATIC_INITIALIZER_STMT (ctxp);
2892 CPC_STATIC_INITIALIZER_LIST (ctxp) =
2893 TREE_CHAIN (CPC_STATIC_INITIALIZER_LIST (ctxp));
2894 /* Keep initialization in order to enforce 8.5 */
2895 if (stmts && !java_error_count)
2896 TYPE_CLINIT_STMT_LIST (class_type) = nreverse (stmts);
2899 /* JDK 1.1 instance initializers */
2900 if (CPC_INSTANCE_INITIALIZER_LIST (ctxp))
2902 stmts = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
2903 CPC_INSTANCE_INITIALIZER_LIST (ctxp) =
2904 TREE_CHAIN (CPC_INSTANCE_INITIALIZER_LIST (ctxp));
2905 if (stmts && !java_error_count)
2906 TYPE_II_STMT_LIST (class_type) = nreverse (stmts);
2911 reorder_static_initialized (tree list)
2913 /* We have to keep things in order. The alias initializer have to
2914 come first, then the initialized regular field, in reverse to
2915 keep them in lexical order. */
2916 tree marker, previous = NULL_TREE;
2917 for (marker = list; marker; previous = marker, marker = TREE_CHAIN (marker))
2918 if (TREE_CODE (marker) == TREE_LIST
2919 && !TREE_VALUE (marker) && !TREE_PURPOSE (marker))
2922 /* No static initialized, the list is fine as is */
2924 list = TREE_CHAIN (marker);
2926 /* No marker? reverse the whole list */
2928 list = nreverse (list);
2930 /* Otherwise, reverse what's after the marker and the new reordered
2931 sublist will replace the marker. */
2934 TREE_CHAIN (previous) = NULL_TREE;
2935 list = nreverse (list);
2936 list = chainon (TREE_CHAIN (marker), list);
2941 /* Helper functions to dump the parser context stack. */
2943 #define TAB_CONTEXT(C) \
2944 {int i; for (i = 0; i < (C); i++) fputc (' ', stderr);}
2947 java_debug_context_do (int tab)
2949 struct parser_ctxt *copy = ctxp;
2953 fprintf (stderr, "ctxt: 0x%0lX\n", (unsigned long)copy);
2955 fprintf (stderr, "filename: %s\n", copy->filename);
2957 fprintf (stderr, "lineno: %d\n", copy->lineno);
2959 fprintf (stderr, "package: %s\n",
2961 IDENTIFIER_POINTER (copy->package) : "<none>"));
2963 fprintf (stderr, "context for saving: %d\n", copy->saved_data_ctx);
2965 fprintf (stderr, "saved data: %d\n", copy->saved_data);
2971 /* Dump the stacked up parser contexts. Intended to be called from a
2975 java_debug_context (void)
2977 java_debug_context_do (0);
2982 /* Flag for the error report routine to issue the error the first time
2983 it's called (overriding the default behavior which is to drop the
2984 first invocation and honor the second one, taking advantage of a
2986 static int force_error = 0;
2988 /* Reporting an constructor invocation error. */
2990 parse_ctor_invocation_error (void)
2992 if (DECL_CONSTRUCTOR_P (current_function_decl))
2993 yyerror ("Constructor invocation must be first thing in a constructor");
2995 yyerror ("Only constructors can invoke constructors");
2998 /* Reporting JDK1.1 features not implemented. */
3001 parse_jdk1_1_error (const char *msg)
3003 sorry (": `%s' JDK1.1(TM) feature", msg);
3005 return build_java_empty_stmt ();
3008 static int do_warning = 0;
3011 yyerror (const char *msg)
3014 static int prev_lineno;
3015 static const char *prev_msg;
3018 char *remainder, *code_from_source;
3020 if (!force_error && prev_lineno == input_line)
3023 /* Save current error location but report latter, when the context is
3025 if (ctxp->java_error_flag == 0)
3027 ctxp->java_error_flag = 1;
3029 /* Do something to use the previous line if we're reaching the
3030 end of the file... */
3031 #ifdef VERBOSE_SKELETON
3032 printf ("* Error detected (%s)\n", (msg ? msg : "(null)"));
3037 /* Ignore duplicate message on the same line. BTW, this is dubious. FIXME */
3038 if (!force_error && msg == prev_msg && prev_lineno == elc.line)
3041 ctxp->java_error_flag = 0;
3043 java_warning_count++;
3047 if (elc.col == 0 && msg && msg[1] == ';')
3049 elc.col = ctxp->p_line->char_col-1;
3050 elc.line = ctxp->p_line->lineno;
3053 save_lineno = input_line;
3054 prev_lineno = input_line = elc.line;
3057 code_from_source = java_get_line_col (ctxp->filename, elc.line, elc.col);
3058 obstack_grow0 (&temporary_obstack,
3059 code_from_source, strlen (code_from_source));
3060 remainder = obstack_finish (&temporary_obstack);
3062 warning ("%s.\n%s", msg, remainder);
3064 error ("%s.\n%s", msg, remainder);
3066 /* This allow us to cheaply avoid an extra 'Invalid expression
3067 statement' error report when errors have been already reported on
3068 the same line. This occurs when we report an error but don't have
3069 a synchronization point other than ';', which
3070 expression_statement is the only one to take care of. */
3071 ctxp->prevent_ese = input_line = save_lineno;
3075 issue_warning_error_from_context (tree cl, const char *msg, va_list ap)
3077 const char *saved, *saved_input_filename;
3079 vsprintf (buffer, msg, ap);
3082 ctxp->elc.line = EXPR_WFL_LINENO (cl);
3083 ctxp->elc.col = (EXPR_WFL_COLNO (cl) == 0xfff ? -1 :
3084 (EXPR_WFL_COLNO (cl) == 0xffe ? -2 : EXPR_WFL_COLNO (cl)));
3086 /* We have a CL, that's a good reason for using it if it contains data */
3087 saved = ctxp->filename;
3088 if (TREE_CODE (cl) == EXPR_WITH_FILE_LOCATION && EXPR_WFL_FILENAME_NODE (cl))
3089 ctxp->filename = EXPR_WFL_FILENAME (cl);
3090 saved_input_filename = input_filename;
3091 input_filename = ctxp->filename;
3093 java_error (buffer);
3094 ctxp->filename = saved;
3095 input_filename = saved_input_filename;
3099 /* Issue an error message at a current source line CL */
3102 parse_error_context (tree cl, const char *msg, ...)
3106 issue_warning_error_from_context (cl, msg, ap);
3110 /* Issue a warning at a current source line CL */
3113 parse_warning_context (tree cl, const char *msg, ...)
3118 force_error = do_warning = 1;
3119 issue_warning_error_from_context (cl, msg, ap);
3120 do_warning = force_error = 0;
3125 find_expr_with_wfl (tree node)
3129 enum tree_code_class code;
3132 switch (TREE_CODE (node))
3135 node = BLOCK_EXPR_BODY (node);
3139 to_return = find_expr_with_wfl (TREE_OPERAND (node, 0));
3142 node = TREE_OPERAND (node, 1);
3146 node = TREE_OPERAND (node, 0);
3149 case LABELED_BLOCK_EXPR:
3150 node = TREE_OPERAND (node, 1);
3154 code = TREE_CODE_CLASS (TREE_CODE (node));
3155 if (((code == tcc_unary) || (code == tcc_binary)
3156 || (code == tcc_expression))
3157 && EXPR_WFL_LINECOL (node))
3165 /* Issue a missing return statement error. Uses METHOD to figure the
3166 last line of the method the error occurs in. */
3169 missing_return_error (tree method)
3171 EXPR_WFL_SET_LINECOL (wfl_operator, DECL_FUNCTION_LAST_LINE (method), -2);
3172 parse_error_context (wfl_operator, "Missing return statement");
3175 /* Issue an unreachable statement error. From NODE, find the next
3176 statement to report appropriately. */
3178 unreachable_stmt_error (tree node)
3180 /* Browse node to find the next expression node that has a WFL. Use
3181 the location to report the error */
3182 if (TREE_CODE (node) == COMPOUND_EXPR)
3183 node = find_expr_with_wfl (TREE_OPERAND (node, 1));
3185 node = find_expr_with_wfl (node);
3189 EXPR_WFL_SET_LINECOL (wfl_operator, EXPR_WFL_LINENO (node), -2);
3190 parse_error_context (wfl_operator, "Unreachable statement");
3197 not_accessible_field_error (tree wfl, tree decl)
3200 (wfl, "Can't access %s field `%s.%s' from `%s'",
3201 accessibility_string (get_access_flags_from_decl (decl)),
3202 GET_TYPE_NAME (DECL_CONTEXT (decl)),
3203 IDENTIFIER_POINTER (DECL_NAME (decl)),
3204 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
3209 java_report_errors (void)
3211 if (java_error_count)
3212 fprintf (stderr, "%d error%s",
3213 java_error_count, (java_error_count == 1 ? "" : "s"));
3214 if (java_warning_count)
3215 fprintf (stderr, "%s%d warning%s", (java_error_count ? ", " : ""),
3216 java_warning_count, (java_warning_count == 1 ? "" : "s"));
3217 if (java_error_count || java_warning_count)
3218 putc ('\n', stderr);
3219 return java_error_count;
3223 java_accstring_lookup (int flags)
3225 static char buffer [80];
3226 #define COPY_RETURN(S) {strcpy (buffer, S); return buffer;}
3228 /* Access modifier looked-up first for easier report on forbidden
3230 if (flags & ACC_PUBLIC) COPY_RETURN ("public");
3231 if (flags & ACC_PRIVATE) COPY_RETURN ("private");
3232 if (flags & ACC_PROTECTED) COPY_RETURN ("protected");
3233 if (flags & ACC_STATIC) COPY_RETURN ("static");
3234 if (flags & ACC_FINAL) COPY_RETURN ("final");
3235 if (flags & ACC_SYNCHRONIZED) COPY_RETURN ("synchronized");
3236 if (flags & ACC_VOLATILE) COPY_RETURN ("volatile");
3237 if (flags & ACC_TRANSIENT) COPY_RETURN ("transient");
3238 if (flags & ACC_NATIVE) COPY_RETURN ("native");
3239 if (flags & ACC_INTERFACE) COPY_RETURN ("interface");
3240 if (flags & ACC_ABSTRACT) COPY_RETURN ("abstract");
3247 /* Returns a string denoting the accessibility of a class or a member as
3248 indicated by FLAGS. We need a separate function from
3249 java_accstring_lookup, as the latter can return spurious "static", etc.
3250 if package-private access is defined (in which case none of the
3251 relevant access control bits in FLAGS is set). */
3254 accessibility_string (int flags)
3256 if (flags & ACC_PRIVATE) return "private";
3257 if (flags & ACC_PROTECTED) return "protected";
3258 if (flags & ACC_PUBLIC) return "public";
3260 return "package-private";
3263 /* Issuing error messages upon redefinition of classes, interfaces or
3267 classitf_redefinition_error (const char *context, tree id, tree decl, tree cl)
3269 parse_error_context (cl, "%s `%s' already defined in %s:%d",
3270 context, IDENTIFIER_POINTER (id),
3271 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
3272 /* Here we should point out where its redefined. It's a unicode. FIXME */
3276 variable_redefinition_error (tree context, tree name, tree type, int line)
3278 const char *type_name;
3280 /* Figure a proper name for type. We might haven't resolved it */
3281 if (TREE_CODE (type) == POINTER_TYPE && !TREE_TYPE (type))
3282 type_name = IDENTIFIER_POINTER (TYPE_NAME (type));
3284 type_name = lang_printable_name (type, 0);
3286 parse_error_context (context,
3287 "Variable `%s' is already defined in this method and was declared `%s %s' at line %d",
3288 IDENTIFIER_POINTER (name),
3289 type_name, IDENTIFIER_POINTER (name), line);
3292 /* If ANAME is terminated with `[]', it indicates an array. This
3293 function returns the number of `[]' found and if this number is
3294 greater than zero, it extracts the array type name and places it in
3295 the node pointed to by TRIMMED unless TRIMMED is null. */
3298 build_type_name_from_array_name (tree aname, tree *trimmed)
3300 const char *name = IDENTIFIER_POINTER (aname);
3301 int len = IDENTIFIER_LENGTH (aname);
3304 STRING_STRIP_BRACKETS (name, len, array_dims);
3306 if (array_dims && trimmed)
3307 *trimmed = get_identifier_with_length (name, len);
3313 build_array_from_name (tree type, tree type_wfl, tree name, tree *ret_name)
3317 /* Eventually get more dims */
3318 more_dims = build_type_name_from_array_name (name, &name);
3320 /* If we have, then craft a new type for this variable */
3325 /* If we have a pointer, use its type */
3326 if (TREE_CODE (type) == POINTER_TYPE)
3327 type = TREE_TYPE (type);
3329 /* Building the first dimension of a primitive type uses this
3331 if (JPRIMITIVE_TYPE_P (type))
3333 type = build_java_array_type (type, -1);
3336 /* Otherwise, if we have a WFL for this type, use it (the type
3337 is already an array on an unresolved type, and we just keep
3338 on adding dimensions) */
3342 more_dims += build_type_name_from_array_name (TYPE_NAME (save),
3346 /* Add all the dimensions */
3348 type = build_unresolved_array_type (type);
3350 /* The type may have been incomplete in the first place */
3352 type = obtain_incomplete_type (type);
3360 /* Build something that the type identifier resolver will identify as
3361 being an array to an unresolved type. TYPE_WFL is a WFL on a
3365 build_unresolved_array_type (tree type_or_wfl)
3370 /* TYPE_OR_WFL might be an array on a resolved type. In this case,
3371 just create a array type */
3372 if (TREE_CODE (type_or_wfl) == RECORD_TYPE)
3373 return build_java_array_type (type_or_wfl, -1);
3375 obstack_grow (&temporary_obstack,
3376 IDENTIFIER_POINTER (EXPR_WFL_NODE (type_or_wfl)),
3377 IDENTIFIER_LENGTH (EXPR_WFL_NODE (type_or_wfl)));
3378 obstack_grow0 (&temporary_obstack, "[]", 2);
3379 ptr = obstack_finish (&temporary_obstack);
3380 wfl = build_expr_wfl (get_identifier (ptr),
3381 EXPR_WFL_FILENAME (type_or_wfl),
3382 EXPR_WFL_LINENO (type_or_wfl),
3383 EXPR_WFL_COLNO (type_or_wfl));
3384 /* Re-install the existing qualifications so that the type can be
3385 resolved properly. */
3386 EXPR_WFL_QUALIFICATION (wfl) = EXPR_WFL_QUALIFICATION (type_or_wfl);
3391 parser_add_interface (tree class_decl, tree interface_decl, tree wfl)
3393 if (maybe_add_interface (TREE_TYPE (class_decl), TREE_TYPE (interface_decl)))
3394 parse_error_context (wfl, "Interface `%s' repeated",
3395 IDENTIFIER_POINTER (DECL_NAME (interface_decl)));
3398 /* Bulk of common class/interface checks. Return 1 if an error was
3399 encountered. TAG is 0 for a class, 1 for an interface. */
3402 check_class_interface_creation (int is_interface, int flags, tree raw_name,
3403 tree qualified_name, tree decl, tree cl)
3406 int sca = 0; /* Static class allowed */
3407 int icaf = 0; /* Inner class allowed flags */
3408 int uaaf = CLASS_MODIFIERS; /* Usually allowed access flags */
3411 fprintf (stderr, " %s%s %s",
3412 (CPC_INNER_P () ? "inner" : ""),
3413 (is_interface ? "interface" : "class"),
3414 IDENTIFIER_POINTER (qualified_name));
3416 /* Scope of an interface/class type name:
3417 - Can't be imported by a single type import
3418 - Can't already exists in the package */
3419 if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (raw_name)
3420 && (node = find_name_in_single_imports (raw_name))
3424 (cl, "%s name `%s' clashes with imported type `%s'",
3425 (is_interface ? "Interface" : "Class"),
3426 IDENTIFIER_POINTER (raw_name), IDENTIFIER_POINTER (node));
3429 if (decl && CLASS_COMPLETE_P (decl))
3431 classitf_redefinition_error ((is_interface ? "Interface" : "Class"),
3432 qualified_name, decl, cl);
3436 if (check_inner_class_redefinition (raw_name, cl))
3439 /* If public, file name should match class/interface name, except
3440 when dealing with an inner class */
3441 if (!CPC_INNER_P () && (flags & ACC_PUBLIC ))
3445 for (f = &input_filename [strlen (input_filename)];
3446 f != input_filename && ! IS_DIR_SEPARATOR (f[0]);
3449 if (IS_DIR_SEPARATOR (f[0]))
3451 if (strncmp (IDENTIFIER_POINTER (raw_name),
3452 f , IDENTIFIER_LENGTH (raw_name)) ||
3453 f [IDENTIFIER_LENGTH (raw_name)] != '.')
3455 (cl, "Public %s `%s' must be defined in a file called `%s.java'",
3456 (is_interface ? "interface" : "class"),
3457 IDENTIFIER_POINTER (qualified_name),
3458 IDENTIFIER_POINTER (raw_name));
3461 /* Static classes can be declared only in top level classes. Note:
3462 once static, a inner class is a top level class. */
3463 if (flags & ACC_STATIC)
3465 /* Catch the specific error of declaring an class inner class
3466 with no toplevel enclosing class. Prevent check_modifiers from
3467 complaining a second time */
3468 if (CPC_INNER_P () && !TOPLEVEL_CLASS_DECL_P (GET_CPC()))
3470 parse_error_context (cl, "Inner class `%s' can't be static. Static classes can only occur in interfaces and top-level classes",
3471 IDENTIFIER_POINTER (qualified_name));
3474 /* Else, in the context of a top-level class declaration, let
3475 `check_modifiers' do its job, otherwise, give it a go */
3477 sca = (GET_CPC_LIST () ? ACC_STATIC : 0);
3480 /* Inner classes can be declared private or protected
3481 within their enclosing classes. */
3484 /* A class which is local to a block can't be public, private,
3485 protected or static. But it is created final, so allow this
3487 if (current_function_decl)
3488 icaf = sca = uaaf = ACC_FINAL;
3491 check_modifiers_consistency (flags);
3492 icaf = ACC_PROTECTED;
3493 if (! CLASS_INTERFACE (GET_CPC ()))
3494 icaf |= ACC_PRIVATE;
3501 uaaf = INTERFACE_INNER_MODIFIERS;
3503 uaaf = INTERFACE_MODIFIERS;
3505 check_modifiers ("Illegal modifier `%s' for interface declaration",
3509 check_modifiers ((current_function_decl ?
3510 "Illegal modifier `%s' for local class declaration" :
3511 "Illegal modifier `%s' for class declaration"),
3512 flags, uaaf|sca|icaf);
3516 /* Construct a nested class name. If the final component starts with
3517 a digit, return true. Otherwise return false. */
3519 make_nested_class_name (tree cpc_list)
3526 make_nested_class_name (TREE_CHAIN (cpc_list));
3528 /* Pick the qualified name when dealing with the first upmost
3530 name = (TREE_CHAIN (cpc_list)
3531 ? TREE_PURPOSE (cpc_list) : DECL_NAME (TREE_VALUE (cpc_list)));
3532 obstack_grow (&temporary_obstack,
3533 IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name));
3534 obstack_1grow (&temporary_obstack, '$');
3536 return ISDIGIT (IDENTIFIER_POINTER (name)[0]);
3539 /* Can't redefine a class already defined in an earlier scope. */
3542 check_inner_class_redefinition (tree raw_name, tree cl)
3546 for (scope_list = GET_CPC_LIST (); scope_list;
3547 scope_list = GET_NEXT_ENCLOSING_CPC (scope_list))
3548 if (raw_name == GET_CPC_UN_NODE (scope_list))
3551 (cl, "The class name `%s' is already defined in this scope. An inner class may not have the same simple name as any of its enclosing classes",
3552 IDENTIFIER_POINTER (raw_name));
3558 /* Tries to find a decl for CLASS_TYPE within ENCLOSING. If we fail,
3559 we remember ENCLOSING and SUPER. */
3562 resolve_inner_class (htab_t circularity_hash, tree cl, tree *enclosing,
3563 tree *super, tree class_type)
3565 tree local_enclosing = *enclosing;
3566 tree local_super = NULL_TREE;
3568 while (local_enclosing)
3570 tree intermediate, decl;
3572 *htab_find_slot (circularity_hash, local_enclosing, INSERT) =
3575 if ((decl = find_as_inner_class (local_enclosing, class_type, cl)))
3578 intermediate = local_enclosing;
3579 /* Explore enclosing contexts. */
3580 while (INNER_CLASS_DECL_P (intermediate))
3582 intermediate = DECL_CONTEXT (intermediate);
3583 if ((decl = find_as_inner_class (intermediate, class_type, cl)))
3587 /* Now go to the upper classes, bail out if necessary. We will
3588 analyze the returned SUPER and act accordingly (see
3589 do_resolve_class). */
3590 if (JPRIMITIVE_TYPE_P (TREE_TYPE (local_enclosing))
3591 || TREE_TYPE (local_enclosing) == void_type_node)
3593 parse_error_context (cl, "Qualifier must be a reference");
3594 local_enclosing = NULL_TREE;
3597 local_super = CLASSTYPE_SUPER (TREE_TYPE (local_enclosing));
3598 if (!local_super || local_super == object_type_node)
3601 if (TREE_CODE (local_super) == POINTER_TYPE)
3602 local_super = do_resolve_class (NULL, local_super, NULL, NULL);
3604 local_super = TYPE_NAME (local_super);
3606 /* We may not have checked for circular inheritance yet, so do so
3607 here to prevent an infinite loop. */
3608 if (htab_find (circularity_hash, local_super) != NULL)
3611 cl = lookup_cl (local_enclosing);
3614 (cl, "Cyclic inheritance involving %s",
3615 IDENTIFIER_POINTER (DECL_NAME (local_enclosing)));
3616 local_enclosing = NULL_TREE;
3619 local_enclosing = local_super;
3622 /* We failed. Return LOCAL_SUPER and LOCAL_ENCLOSING. */
3623 *super = local_super;
3624 *enclosing = local_enclosing;
3629 /* Within ENCLOSING, find a decl for NAME and return it. NAME can be
3633 find_as_inner_class (tree enclosing, tree name, tree cl)
3635 tree qual, to_return;
3639 name = TYPE_NAME (name);
3641 /* First search: within the scope of `enclosing', search for name */
3642 if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
3643 qual = EXPR_WFL_QUALIFICATION (cl);
3645 qual = build_tree_list (cl, NULL_TREE);
3647 qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);
3649 if ((to_return = find_as_inner_class_do (qual, enclosing)))
3652 /* We're dealing with a qualified name. Try to resolve thing until
3653 we get something that is an enclosing class. */
3654 if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
3656 tree acc = NULL_TREE, decl = NULL_TREE, ptr;
3658 for (qual = EXPR_WFL_QUALIFICATION (cl); qual && !decl;
3659 qual = TREE_CHAIN (qual))
3661 acc = merge_qualified_name (acc,
3662 EXPR_WFL_NODE (TREE_PURPOSE (qual)));
3663 BUILD_PTR_FROM_NAME (ptr, acc);
3664 decl = do_resolve_class (NULL_TREE, ptr, NULL_TREE, cl);
3667 /* A NULL qual and a decl means that the search ended
3668 successfully?!? We have to do something then. FIXME */
3673 qual = EXPR_WFL_QUALIFICATION (cl);
3675 /* Otherwise, create a qual for the other part of the resolution. */
3677 qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);
3679 return find_as_inner_class_do (qual, enclosing);
3682 /* We go inside the list of sub classes and try to find a way
3686 find_as_inner_class_do (tree qual, tree enclosing)
3691 for (; qual && enclosing; qual = TREE_CHAIN (qual))
3693 tree name_to_match = EXPR_WFL_NODE (TREE_PURPOSE (qual));
3694 tree next_enclosing = NULL_TREE;
3697 for (inner_list = DECL_INNER_CLASS_LIST (enclosing);
3698 inner_list; inner_list = TREE_CHAIN (inner_list))
3700 if (TREE_VALUE (inner_list) == name_to_match)
3702 next_enclosing = TREE_PURPOSE (inner_list);
3706 enclosing = next_enclosing;
3709 return (!qual && enclosing ? enclosing : NULL_TREE);
3713 link_nested_class_to_enclosing (void)
3715 if (GET_ENCLOSING_CPC ())
3717 tree enclosing = GET_ENCLOSING_CPC_CONTEXT ();
3718 DECL_INNER_CLASS_LIST (enclosing) =
3719 tree_cons (GET_CPC (), GET_CPC_UN (),
3720 DECL_INNER_CLASS_LIST (enclosing));
3725 maybe_make_nested_class_name (tree name)
3727 tree id = NULL_TREE;
3731 /* If we're in a function, we must append a number to create the
3732 nested class name. However, we don't do this if the class we
3733 are constructing is anonymous, because in that case we'll
3734 already have a number as the class name. */
3735 if (! make_nested_class_name (GET_CPC_LIST ())
3736 && current_function_decl != NULL_TREE
3737 && ! ISDIGIT (IDENTIFIER_POINTER (name)[0]))
3740 sprintf (buf, "%d", anonymous_class_counter);
3741 ++anonymous_class_counter;
3742 obstack_grow (&temporary_obstack, buf, strlen (buf));
3743 obstack_1grow (&temporary_obstack, '$');
3745 obstack_grow0 (&temporary_obstack,
3746 IDENTIFIER_POINTER (name),
3747 IDENTIFIER_LENGTH (name));
3748 id = get_identifier (obstack_finish (&temporary_obstack));
3750 QUALIFIED_P (id) = 1;
3755 /* If DECL is NULL, create and push a new DECL, record the current
3756 line CL and do other maintenance things. */
3759 maybe_create_class_interface_decl (tree decl, tree raw_name,
3760 tree qualified_name, tree cl)
3763 decl = push_class (make_class (), qualified_name);
3765 /* Take care of the file and line business */
3766 DECL_SOURCE_FILE (decl) = EXPR_WFL_FILENAME (cl);
3767 /* If we're emitting xrefs, store the line/col number information */
3769 DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (cl);
3771 DECL_SOURCE_LINE (decl) = EXPR_WFL_LINENO (cl);
3772 CLASS_FROM_SOURCE_P (TREE_TYPE (decl)) = 1;
3773 CLASS_PARSED_P (TREE_TYPE (decl)) = 1;
3774 CLASS_FROM_CURRENTLY_COMPILED_P (TREE_TYPE (decl)) =
3775 IS_A_COMMAND_LINE_FILENAME_P (EXPR_WFL_FILENAME_NODE (cl));
3777 PUSH_CPC (decl, raw_name);
3778 DECL_CONTEXT (decl) = GET_ENCLOSING_CPC_CONTEXT ();
3780 /* Link the declaration to the already seen ones */
3781 TREE_CHAIN (decl) = ctxp->class_list;
3782 ctxp->class_list = decl;
3784 /* Create a new nodes in the global lists */
3785 gclass_list = tree_cons (NULL_TREE, decl, gclass_list);
3786 all_class_list = tree_cons (NULL_TREE, decl, all_class_list);
3788 /* Install a new dependency list element */
3789 create_jdep_list (ctxp);
3791 SOURCE_FRONTEND_DEBUG (("Defining class/interface %s",
3792 IDENTIFIER_POINTER (qualified_name)));
3797 add_superinterfaces (tree decl, tree interface_list)
3800 /* Superinterface(s): if present and defined, parser_check_super_interface ()
3801 takes care of ensuring that:
3802 - This is an accessible interface type,
3803 - Circularity detection.
3804 parser_add_interface is then called. If present but not defined,
3805 the check operation is delayed until the super interface gets
3807 for (node = interface_list; node; node = TREE_CHAIN (node))
3809 tree current = TREE_PURPOSE (node);
3810 tree idecl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (current));
3811 if (idecl && CLASS_LOADED_P (TREE_TYPE (idecl)))
3813 if (!parser_check_super_interface (idecl, decl, current))
3814 parser_add_interface (decl, idecl, current);
3817 register_incomplete_type (JDEP_INTERFACE,
3818 current, decl, NULL_TREE);
3822 /* Create an interface in pass1 and return its decl. Return the
3823 interface's decl in pass 2. */
3826 create_interface (int flags, tree id, tree super)
3828 tree raw_name = EXPR_WFL_NODE (id);
3829 tree q_name = parser_qualified_classname (raw_name);
3830 tree decl = IDENTIFIER_CLASS_VALUE (q_name);
3832 /* Certain syntax errors are making SUPER be like ID. Avoid this
3834 if (ctxp->class_err && id == super)
3837 EXPR_WFL_NODE (id) = q_name; /* Keep source location, even if refined. */
3839 /* Basic checks: scope, redefinition, modifiers */
3840 if (check_class_interface_creation (1, flags, raw_name, q_name, decl, id))
3846 /* Suspend the current parsing context if we're parsing an inner
3850 java_parser_context_suspend ();
3851 /* Interface members are public. */
3852 if (CLASS_INTERFACE (GET_CPC ()))
3853 flags |= ACC_PUBLIC;
3856 /* Push a new context for (static) initialized upon declaration fields */
3857 java_parser_context_push_initialized_field ();
3859 /* Interface modifiers check
3860 - public/abstract allowed (already done at that point)
3861 - abstract is obsolete (comes first, it's a warning, or should be)
3862 - Can't use twice the same (checked in the modifier rule) */
3863 if ((flags & ACC_ABSTRACT) && flag_redundant)
3864 parse_warning_context
3865 (MODIFIER_WFL (ABSTRACT_TK),
3866 "Redundant use of `abstract' modifier. Interface `%s' is implicitly abstract", IDENTIFIER_POINTER (raw_name));
3868 /* Create a new decl if DECL is NULL, otherwise fix it */
3869 decl = maybe_create_class_interface_decl (decl, raw_name, q_name, id);
3871 /* Interfaces are always abstract. */
3872 flags |= ACC_ABSTRACT;
3874 /* Inner interfaces are always static. */
3875 if (INNER_CLASS_DECL_P (decl))
3876 flags |= ACC_STATIC;
3878 /* Set super info and mark the class a complete */
3879 set_super_info (ACC_INTERFACE | flags, TREE_TYPE (decl),
3880 object_type_node, ctxp->interface_number);
3881 ctxp->interface_number = 0;
3882 CLASS_COMPLETE_P (decl) = 1;
3883 add_superinterfaces (decl, super);
3885 /* Eventually sets the @deprecated tag flag */
3886 CHECK_DEPRECATED (decl);
3891 /* Patch anonymous class CLASS, by either extending or implementing
3895 patch_anonymous_class (tree type_decl, tree class_decl, tree wfl)
3897 tree class = TREE_TYPE (class_decl);
3898 tree type = TREE_TYPE (type_decl);
3899 tree binfo = TYPE_BINFO (class);
3901 /* If it's an interface, implement it */
3902 if (CLASS_INTERFACE (type_decl))
3904 if (parser_check_super_interface (type_decl, class_decl, wfl))
3907 if (!VEC_space (tree, BINFO_BASE_BINFOS (binfo), 1))
3909 /* Extend the binfo - by reallocating and copying it. */
3914 new_binfo = make_tree_binfo ((BINFO_N_BASE_BINFOS (binfo) + 1) * 2);
3915 for (i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
3916 BINFO_BASE_APPEND (new_binfo, base_binfo);
3917 CLASS_HAS_SUPER_FLAG (new_binfo) = CLASS_HAS_SUPER_FLAG (binfo);
3918 BINFO_VTABLE (new_binfo) = BINFO_VTABLE (binfo);
3919 TYPE_BINFO (class) = new_binfo;
3922 /* And add the interface */
3923 parser_add_interface (class_decl, type_decl, wfl);
3925 /* Otherwise, it's a type we want to extend */
3928 if (parser_check_super (type_decl, class_decl, wfl))
3930 BINFO_TYPE (BINFO_BASE_BINFO (binfo, 0)) = type;
3934 /* Create an anonymous class which extends/implements TYPE_NAME, and return
3938 create_anonymous_class (tree type_name)
3941 tree super = NULL_TREE, itf = NULL_TREE;
3942 tree id, type_decl, class;
3944 /* The unqualified name of the anonymous class. It's just a number. */
3945 sprintf (buffer, "%d", anonymous_class_counter++);
3946 id = build_wfl_node (get_identifier (buffer));
3947 EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL (type_name);
3949 /* We know about the type to extend/implement. We go ahead */
3950 if ((type_decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (type_name))))
3952 /* Create a class which either implements on extends the designated
3953 class. The class bears an inaccessible name. */
3954 if (CLASS_INTERFACE (type_decl))
3956 /* It's OK to modify it here. It's been already used and
3957 shouldn't be reused */
3958 ctxp->interface_number = 1;
3959 /* Interfaces should presented as a list of WFLs */
3960 itf = build_tree_list (type_name, NULL_TREE);
3966 class = create_class (ACC_FINAL, id, super, itf);
3968 /* We didn't know anything about the stuff. We register a dependence. */
3970 register_incomplete_type (JDEP_ANONYMOUS, type_name, class, NULL_TREE);
3972 ANONYMOUS_CLASS_P (TREE_TYPE (class)) = 1;
3976 /* Create a class in pass1 and return its decl. Return class
3977 interface's decl in pass 2. */
3980 create_class (int flags, tree id, tree super, tree interfaces)
3982 tree raw_name = EXPR_WFL_NODE (id);
3983 tree class_id, decl;
3984 tree super_decl_type;
3986 /* Certain syntax errors are making SUPER be like ID. Avoid this
3988 if (ctxp->class_err && id == super)
3991 class_id = parser_qualified_classname (raw_name);
3992 decl = IDENTIFIER_CLASS_VALUE (class_id);
3993 EXPR_WFL_NODE (id) = class_id;
3995 /* Basic check: scope, redefinition, modifiers */
3996 if (check_class_interface_creation (0, flags, raw_name, class_id, decl, id))
4002 /* Suspend the current parsing context if we're parsing an inner
4003 class or an anonymous class. */
4006 java_parser_context_suspend ();
4007 /* Interface members are public. */
4008 if (CLASS_INTERFACE (GET_CPC ()))
4009 flags |= ACC_PUBLIC;
4012 /* Push a new context for (static) initialized upon declaration fields */
4013 java_parser_context_push_initialized_field ();
4015 /* Class modifier check:
4016 - Allowed modifier (already done at that point)
4017 - abstract AND final forbidden
4018 - Public classes defined in the correct file */
4019 if ((flags & ACC_ABSTRACT) && (flags & ACC_FINAL))
4021 (id, "Class `%s' can't be declared both abstract and final",
4022 IDENTIFIER_POINTER (raw_name));
4024 /* Create a new decl if DECL is NULL, otherwise fix it */
4025 decl = maybe_create_class_interface_decl (decl, raw_name, class_id, id);
4027 /* If SUPER exists, use it, otherwise use Object */
4030 /* java.lang.Object can't extend anything. */
4031 if (TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_id)) == object_type_node)
4033 parse_error_context (id, "`java.lang.Object' can't extend anything");
4038 register_incomplete_type (JDEP_SUPER, super, decl, NULL_TREE);
4040 else if (TREE_TYPE (decl) != object_type_node)
4041 super_decl_type = object_type_node;
4042 /* We're defining java.lang.Object */
4044 super_decl_type = NULL_TREE;
4046 /* A class nested in an interface is implicitly static. */
4047 if (INNER_CLASS_DECL_P (decl)
4048 && CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (DECL_CONTEXT (decl)))))
4050 flags |= ACC_STATIC;
4053 /* Set super info and mark the class as complete. */
4054 set_super_info (flags, TREE_TYPE (decl), super_decl_type,
4055 ctxp->interface_number);
4056 ctxp->interface_number = 0;
4057 CLASS_COMPLETE_P (decl) = 1;
4058 add_superinterfaces (decl, interfaces);
4060 /* TYPE_VFIELD' is a compiler-generated field used to point to
4061 virtual function tables. In gcj, every class has a common base
4062 virtual function table in java.lang.object. */
4063 TYPE_VFIELD (TREE_TYPE (decl)) = TYPE_VFIELD (object_type_node);
4065 /* Add the private this$<n> field, Replicate final locals still in
4066 scope as private final fields mangled like val$<local_name>.
4067 This does not occur for top level (static) inner classes. */
4068 if (PURE_INNER_CLASS_DECL_P (decl))
4069 add_inner_class_fields (decl, current_function_decl);
4071 /* If doing xref, store the location at which the inherited class
4072 (if any) was seen. */
4073 if (flag_emit_xref && super)
4074 DECL_INHERITED_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (super);
4076 /* Eventually sets the @deprecated tag flag */
4077 CHECK_DEPRECATED (decl);
4079 /* Reset the anonymous class counter when declaring non inner classes */
4080 if (!INNER_CLASS_DECL_P (decl))
4081 anonymous_class_counter = 1;
4086 /* End a class declaration: register the statements used to create
4087 finit$ and <clinit>, pop the current class and resume the prior
4088 parser context if necessary. */
4091 end_class_declaration (int resume)
4093 /* If an error occurred, context weren't pushed and won't need to be
4094 popped by a resume. */
4095 int no_error_occurred = ctxp->next && GET_CPC () != error_mark_node;
4097 if (GET_CPC () != error_mark_node)
4098 dump_java_tree (TDI_class, GET_CPC ());
4100 java_parser_context_pop_initialized_field ();
4102 if (resume && no_error_occurred)
4103 java_parser_context_resume ();
4105 /* We're ending a class declaration, this is a good time to reset
4106 the interface cout. Note that might have been already done in
4107 create_interface, but if at that time an inner class was being
4108 dealt with, the interface count was reset in a context created
4109 for the sake of handling inner classes declaration. */
4110 ctxp->interface_number = 0;
4114 add_inner_class_fields (tree class_decl, tree fct_decl)
4116 tree block, marker, f;
4118 f = add_field (TREE_TYPE (class_decl),
4119 build_current_thisn (TREE_TYPE (class_decl)),
4120 build_pointer_type (TREE_TYPE (DECL_CONTEXT (class_decl))),
4122 FIELD_THISN (f) = 1;
4127 for (block = GET_CURRENT_BLOCK (fct_decl);
4128 block && TREE_CODE (block) == BLOCK; block = BLOCK_SUPERCONTEXT (block))
4131 for (decl = BLOCK_EXPR_DECLS (block); decl; decl = TREE_CHAIN (decl))
4134 tree wfl, init, list;
4136 /* Avoid non final arguments. */
4137 if (!LOCAL_FINAL_P (decl))
4140 MANGLE_OUTER_LOCAL_VARIABLE_NAME (name, DECL_NAME (decl));
4141 MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_ID (pname, DECL_NAME (decl));
4142 wfl = build_wfl_node (name);
4143 init = build_wfl_node (pname);
4144 /* Build an initialization for the field: it will be
4145 initialized by a parameter added to finit$, bearing a
4146 mangled name of the field itself (param$<n>.) The
4147 parameter is provided to finit$ by the constructor
4148 invoking it (hence the constructor will also feature a
4149 hidden parameter, set to the value of the outer context
4150 local at the time the inner class is created.)
4152 Note: we take into account all possible locals that can
4153 be accessed by the inner class. It's actually not trivial
4154 to minimize these aliases down to the ones really
4155 used. One way to do that would be to expand all regular
4156 methods first, then finit$ to get a picture of what's
4157 used. It works with the exception that we would have to
4158 go back on all constructor invoked in regular methods to
4159 have their invocation reworked (to include the right amount
4160 of alias initializer parameters.)
4162 The only real way around, I think, is a first pass to
4163 identify locals really used in the inner class. We leave
4164 the flag FIELD_LOCAL_ALIAS_USED around for that future
4167 On the other hand, it only affect local inner classes,
4168 whose constructors (and finit$ call) will be featuring
4169 unnecessary arguments. It's easy for a developer to keep
4170 this number of parameter down by using the `final'
4171 keyword only when necessary. For the time being, we can
4172 issue a warning on unnecessary finals. FIXME */
4173 init = build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (wfl),
4176 /* Register the field. The TREE_LIST holding the part
4177 initialized/initializer will be marked ARG_FINAL_P so
4178 that the created field can be marked
4179 FIELD_LOCAL_ALIAS. */
4180 list = build_tree_list (wfl, init);
4181 ARG_FINAL_P (list) = 1;
4182 register_fields (ACC_PRIVATE | ACC_FINAL, TREE_TYPE (decl), list);
4186 if (!CPC_INITIALIZER_STMT (ctxp))
4189 /* If we ever registered an alias field, insert and marker to
4190 remember where the list ends. The second part of the list (the one
4191 featuring initialized fields) so it can be later reversed to
4192 enforce 8.5. The marker will be removed during that operation. */
4193 marker = build_tree_list (NULL_TREE, NULL_TREE);
4194 TREE_CHAIN (marker) = CPC_INITIALIZER_STMT (ctxp);
4195 SET_CPC_INITIALIZER_STMT (ctxp, marker);
4198 /* Can't use lookup_field () since we don't want to load the class and
4199 can't set the CLASS_LOADED_P flag */
4202 find_field (tree class, tree name)
4205 for (decl = TYPE_FIELDS (class); decl; decl = TREE_CHAIN (decl))
4207 if (DECL_NAME (decl) == name)
4213 /* Wrap around lookup_field that doesn't potentially upset the value
4217 lookup_field_wrapper (tree class, tree name)
4220 tree decl = NULL_TREE;
4221 java_parser_context_save_global ();
4223 /* Last chance: if we're within the context of an inner class, we
4224 might be trying to access a local variable defined in an outer
4225 context. We try to look for it now. */
4226 if (INNER_CLASS_TYPE_P (class) && TREE_CODE (name) == IDENTIFIER_NODE)
4229 MANGLE_OUTER_LOCAL_VARIABLE_NAME (new_name, name);
4230 decl = lookup_field (&type, new_name);
4231 if (decl && decl != error_mark_node)
4232 FIELD_LOCAL_ALIAS_USED (decl) = 1;
4234 if (!decl || decl == error_mark_node)
4237 decl = lookup_field (&type, name);
4240 /* If the field still hasn't been found, try the next enclosing context. */
4241 if (!decl && INNER_CLASS_TYPE_P (class))
4243 tree outer_type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class)));
4244 decl = lookup_field_wrapper (outer_type, name);
4247 java_parser_context_restore_global ();
4248 return decl == error_mark_node ? NULL : decl;
4251 /* Find duplicate field within the same class declarations and report
4252 the error. Returns 1 if a duplicated field was found, 0
4256 duplicate_declaration_error_p (tree new_field_name, tree new_type, tree cl)
4258 /* This might be modified to work with method decl as well */
4259 tree decl = find_field (TREE_TYPE (GET_CPC ()), new_field_name);
4262 char *t1 = xstrdup (purify_type_name
4263 ((TREE_CODE (new_type) == POINTER_TYPE
4264 && TREE_TYPE (new_type) == NULL_TREE) ?
4265 IDENTIFIER_POINTER (TYPE_NAME (new_type)) :
4266 lang_printable_name (new_type, 1)));
4267 /* The type may not have been completed by the time we report
4269 char *t2 = xstrdup (purify_type_name
4270 ((TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE
4271 && TREE_TYPE (TREE_TYPE (decl)) == NULL_TREE) ?
4272 IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))) :
4273 lang_printable_name (TREE_TYPE (decl), 1)));
4275 (cl , "Duplicate variable declaration: `%s %s' was `%s %s' (%s:%d)",
4276 t1, IDENTIFIER_POINTER (new_field_name),
4277 t2, IDENTIFIER_POINTER (DECL_NAME (decl)),
4278 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
4286 /* Field registration routine. If TYPE doesn't exist, field
4287 declarations are linked to the undefined TYPE dependency list, to
4288 be later resolved in java_complete_class () */
4291 register_fields (int flags, tree type, tree variable_list)
4293 tree current, saved_type;
4294 tree class_type = NULL_TREE;
4295 int saved_lineno = input_line;
4297 tree wfl = NULL_TREE;
4300 class_type = TREE_TYPE (GET_CPC ());
4302 if (!class_type || class_type == error_mark_node)
4305 /* If we're adding fields to interfaces, those fields are public,
4307 if (CLASS_INTERFACE (TYPE_NAME (class_type)))
4309 OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (PUBLIC_TK),
4310 flags, ACC_PUBLIC, "interface field(s)");
4311 OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (STATIC_TK),
4312 flags, ACC_STATIC, "interface field(s)");
4313 OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (FINAL_TK),
4314 flags, ACC_FINAL, "interface field(s)");
4315 check_modifiers ("Illegal interface member modifier `%s'", flags,
4316 INTERFACE_FIELD_MODIFIERS);
4317 flags |= (ACC_PUBLIC | ACC_STATIC | ACC_FINAL);
4320 /* Obtain a suitable type for resolution, if necessary */
4321 SET_TYPE_FOR_RESOLUTION (type, wfl, must_chain);
4323 /* If TYPE is fully resolved and we don't have a reference, make one */
4324 PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
4326 for (current = variable_list, saved_type = type; current;
4327 current = TREE_CHAIN (current), type = saved_type)
4331 tree cl = TREE_PURPOSE (current);
4332 tree init = TREE_VALUE (current);
4333 tree current_name = EXPR_WFL_NODE (cl);
4335 /* Can't declare non-final static fields in inner classes */
4336 if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (class_type)
4337 && !(flags & ACC_FINAL))
4339 (cl, "Field `%s' can't be static in inner class `%s' unless it is final",
4340 IDENTIFIER_POINTER (EXPR_WFL_NODE (cl)),
4341 lang_printable_name (class_type, 0));
4343 /* Process NAME, as it may specify extra dimension(s) for it */
4344 type = build_array_from_name (type, wfl, current_name, ¤t_name);
4346 /* Type adjustment. We may have just readjusted TYPE because
4347 the variable specified more dimensions. Make sure we have
4348 a reference if we can and don't have one already. Also
4349 change the name if we have an init. */
4350 if (type != saved_type)
4352 PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
4354 EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = current_name;
4357 real_type = GET_REAL_TYPE (type);
4358 /* Check for redeclarations */
4359 if (duplicate_declaration_error_p (current_name, real_type, cl))
4362 /* Set input_line to the line the field was found and create a
4363 declaration for it. Eventually sets the @deprecated tag flag. */
4365 input_line = EXPR_WFL_LINECOL (cl);
4367 input_line = EXPR_WFL_LINENO (cl);
4368 field_decl = add_field (class_type, current_name, real_type, flags);
4369 CHECK_DEPRECATED_NO_RESET (field_decl);
4371 /* If the field denotes a final instance variable, then we
4372 allocate a LANG_DECL_SPECIFIC part to keep track of its
4373 initialization. We also mark whether the field was
4374 initialized upon its declaration. We don't do that if the
4375 created field is an alias to a final local. */
4376 if (!ARG_FINAL_P (current) && (flags & ACC_FINAL))
4378 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (field_decl);
4379 DECL_FIELD_FINAL_WFL (field_decl) = cl;
4382 /* If the couple initializer/initialized is marked ARG_FINAL_P,
4383 we mark the created field FIELD_LOCAL_ALIAS, so that we can
4384 hide parameters to this inner class finit$ and
4385 constructors. It also means that the field isn't final per
4387 if (ARG_FINAL_P (current))
4389 FIELD_LOCAL_ALIAS (field_decl) = 1;
4390 FIELD_FINAL (field_decl) = 0;
4393 /* Check if we must chain. */
4395 register_incomplete_type (JDEP_FIELD, wfl, field_decl, type);
4397 /* If we have an initialization value tied to the field */
4400 /* The field is declared static */
4401 if (flags & ACC_STATIC)
4403 /* We include the field and its initialization part into
4404 a list used to generate <clinit>. After <clinit> is
4405 walked, field initializations will be processed and
4406 fields initialized with known constants will be taken
4407 out of <clinit> and have their DECL_INITIAL set
4409 TREE_CHAIN (init) = CPC_STATIC_INITIALIZER_STMT (ctxp);
4410 SET_CPC_STATIC_INITIALIZER_STMT (ctxp, init);
4411 if (TREE_OPERAND (init, 1)
4412 && TREE_CODE (TREE_OPERAND (init, 1)) == NEW_ARRAY_INIT)
4413 TREE_STATIC (TREE_OPERAND (init, 1)) = 1;
4415 /* A non-static field declared with an immediate initialization is
4416 to be initialized in <init>, if any. This field is remembered
4417 to be processed at the time of the generation of <init>. */
4420 TREE_CHAIN (init) = CPC_INITIALIZER_STMT (ctxp);
4421 SET_CPC_INITIALIZER_STMT (ctxp, init);
4423 MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
4424 DECL_INITIAL (field_decl) = TREE_OPERAND (init, 1);
4429 input_line = saved_lineno;
4432 /* Generate finit$, using the list of initialized fields to populate
4433 its body. finit$'s parameter(s) list is adjusted to include the
4434 one(s) used to initialized the field(s) caching outer context
4438 generate_finit (tree class_type)
4441 tree list = TYPE_FINIT_STMT_LIST (class_type);
4442 tree mdecl, current, parms;
4444 parms = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION,
4445 class_type, NULL_TREE,
4447 CRAFTED_PARAM_LIST_FIXUP (parms);
4448 mdecl = create_artificial_method (class_type, ACC_PRIVATE, void_type_node,
4449 finit_identifier_node, parms);
4450 fix_method_argument_names (parms, mdecl);
4451 layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
4453 DECL_FUNCTION_NAP (mdecl) = count;
4454 start_artificial_method_body (mdecl);
4456 for (current = list; current; current = TREE_CHAIN (current))
4457 java_method_add_stmt (mdecl,
4458 build_debugable_stmt (EXPR_WFL_LINECOL (current),
4460 end_artificial_method_body (mdecl);
4464 /* Generate a function to run the instance initialization code. The
4465 private method is called `instinit$'. Unless we're dealing with an
4466 anonymous class, we determine whether all ctors of CLASS_TYPE
4467 declare a checked exception in their `throws' clause in order to
4468 see whether it's necessary to encapsulate the instance initializer
4469 statements in a try/catch/rethrow sequence. */
4472 generate_instinit (tree class_type)
4475 tree compound = NULL_TREE;
4476 tree parms = tree_cons (this_identifier_node,
4477 build_pointer_type (class_type), end_params_node);
4478 tree mdecl = create_artificial_method (class_type, ACC_PRIVATE,
4480 instinit_identifier_node, parms);
4482 layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
4485 /* Gather all the statements in a compound */
4486 for (current = TYPE_II_STMT_LIST (class_type);
4487 current; current = TREE_CHAIN (current))
4488 compound = add_stmt_to_compound (compound, NULL_TREE, current);
4490 /* We need to encapsulate COMPOUND by a try/catch statement to
4491 rethrow exceptions that might occur in the instance initializer.
4492 We do that only if all ctors of CLASS_TYPE are set to catch a
4493 checked exception. This doesn't apply to anonymous classes (since
4494 they don't have declared ctors.) */
4495 if (!ANONYMOUS_CLASS_P (class_type) &&
4496 ctors_unchecked_throws_clause_p (class_type))
4498 compound = encapsulate_with_try_catch (0, exception_type_node, compound,
4499 build1 (THROW_EXPR, NULL_TREE,
4500 build_wfl_node (wpv_id)));
4501 DECL_FUNCTION_THROWS (mdecl) = build_tree_list (NULL_TREE,
4502 exception_type_node);
4505 start_artificial_method_body (mdecl);
4506 java_method_add_stmt (mdecl, compound);
4507 end_artificial_method_body (mdecl);
4514 build_instinit_invocation (tree class_type)
4516 tree to_return = NULL_TREE;
4518 if (TYPE_II_STMT_LIST (class_type))
4520 tree parm = build_tree_list (NULL_TREE,
4521 build_wfl_node (this_identifier_node));
4523 build_method_invocation (build_wfl_node (instinit_identifier_node),
4529 /* Shared across method_declarator and method_header to remember the
4530 patch stage that was reached during the declaration of the method.
4531 A method DECL is built differently is there is no patch
4532 (JDEP_NO_PATCH) or a patch (JDEP_METHOD or JDEP_METHOD_RETURN)
4533 pending on the currently defined method. */
4535 static int patch_stage;
4537 /* Check the method declaration and add the method to its current
4538 class. If the argument list is known to contain incomplete types,
4539 the method is partially added and the registration will be resume
4540 once the method arguments resolved. If TYPE is NULL, we're dealing
4541 with a constructor. */
4544 method_header (int flags, tree type, tree mdecl, tree throws)
4546 tree type_wfl = NULL_TREE;
4547 tree meth_name = NULL_TREE;
4548 tree current, orig_arg, this_class = NULL;
4551 int constructor_ok = 0, must_chain;
4554 if (mdecl == error_mark_node)
4555 return error_mark_node;
4556 meth = TREE_VALUE (mdecl);
4557 id = TREE_PURPOSE (mdecl);
4559 check_modifiers_consistency (flags);
4562 this_class = TREE_TYPE (GET_CPC ());
4564 if (!this_class || this_class == error_mark_node)
4567 /* There are some forbidden modifiers for an abstract method and its
4568 class must be abstract as well. */
4569 if (type && (flags & ACC_ABSTRACT))
4571 ABSTRACT_CHECK (flags, ACC_PRIVATE, id, "Private");
4572 ABSTRACT_CHECK (flags, ACC_STATIC, id, "Static");
4573 ABSTRACT_CHECK (flags, ACC_FINAL, id, "Final");
4574 ABSTRACT_CHECK (flags, ACC_NATIVE, id, "Native");
4575 ABSTRACT_CHECK (flags, ACC_SYNCHRONIZED, id, "Synchronized");
4576 ABSTRACT_CHECK (flags, ACC_STRICT, id, "Strictfp");
4577 if (!CLASS_ABSTRACT (TYPE_NAME (this_class))
4578 && !CLASS_INTERFACE (TYPE_NAME (this_class)))
4580 (id, "Class `%s' must be declared abstract to define abstract method `%s'",
4581 IDENTIFIER_POINTER (DECL_NAME (GET_CPC ())),
4582 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
4585 /* A native method can't be strictfp. */
4586 if ((flags & ACC_NATIVE) && (flags & ACC_STRICT))
4587 parse_error_context (id, "native method `%s' can't be strictfp",
4588 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
4589 /* No such thing as a transient or volatile method. */
4590 if ((flags & ACC_TRANSIENT))
4591 parse_error_context (id, "method `%s' can't be transient",
4592 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
4593 if ((flags & ACC_VOLATILE))
4594 parse_error_context (id, "method `%s' can't be volatile",
4595 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
4597 /* Things to be checked when declaring a constructor */
4600 int ec = java_error_count;
4601 /* 8.6: Constructor declarations: we might be trying to define a
4602 method without specifying a return type. */
4603 if (EXPR_WFL_NODE (id) != GET_CPC_UN ())
4605 (id, "Invalid method declaration, return type required");
4606 /* 8.6.3: Constructor modifiers */
4609 JCONSTRUCTOR_CHECK (flags, ACC_ABSTRACT, id, "abstract");
4610 JCONSTRUCTOR_CHECK (flags, ACC_STATIC, id, "static");
4611 JCONSTRUCTOR_CHECK (flags, ACC_FINAL, id, "final");
4612 JCONSTRUCTOR_CHECK (flags, ACC_NATIVE, id, "native");
4613 JCONSTRUCTOR_CHECK (flags, ACC_SYNCHRONIZED, id, "synchronized");
4614 JCONSTRUCTOR_CHECK (flags, ACC_STRICT, id, "strictfp");
4616 /* If we found error here, we don't consider it's OK to tread
4617 the method definition as a constructor, for the rest of this
4619 if (ec == java_error_count)
4623 /* Method declared within the scope of an interface are implicitly
4624 abstract and public. Conflicts with other erroneously provided
4625 modifiers are checked right after. */
4627 if (CLASS_INTERFACE (TYPE_NAME (this_class)))
4629 /* If FLAGS isn't set because of a modifier, turn the
4630 corresponding modifier WFL to NULL so we issue a warning on
4631 the obsolete use of the modifier */
4632 if (!(flags & ACC_PUBLIC))
4633 MODIFIER_WFL (PUBLIC_TK) = NULL;
4634 if (!(flags & ACC_ABSTRACT))
4635 MODIFIER_WFL (ABSTRACT_TK) = NULL;
4636 flags |= ACC_PUBLIC;
4637 flags |= ACC_ABSTRACT;
4640 /* Inner class can't declare static methods */
4641 if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (this_class))
4644 (id, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
4645 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)),
4646 lang_printable_name (this_class, 0));
4649 /* Modifiers context reset moved up, so abstract method declaration
4650 modifiers can be later checked. */
4652 /* Set constructor returned type to void and method name to <init>,
4653 unless we found an error identifier the constructor (in which
4654 case we retain the original name) */
4657 type = void_type_node;
4659 meth_name = init_identifier_node;
4662 meth_name = EXPR_WFL_NODE (id);
4664 /* Do the returned type resolution and registration if necessary */
4665 SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
4668 type = build_array_from_name (type, type_wfl, meth_name, &meth_name);
4669 EXPR_WFL_NODE (id) = meth_name;
4670 PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
4674 patch_stage = JDEP_METHOD_RETURN;
4675 register_incomplete_type (patch_stage, type_wfl, id, type);
4676 TREE_TYPE (meth) = GET_REAL_TYPE (type);
4679 TREE_TYPE (meth) = type;
4681 saved_lineno = input_line;
4682 /* When defining an abstract or interface method, the curly
4683 bracket at level 1 doesn't exist because there is no function
4685 input_line = (ctxp->first_ccb_indent1 ? ctxp->first_ccb_indent1 :
4686 EXPR_WFL_LINENO (id));
4688 /* Remember the original argument list */
4689 orig_arg = TYPE_ARG_TYPES (meth);
4691 if (patch_stage) /* includes ret type and/or all args */
4694 meth = add_method_1 (this_class, flags, meth_name, meth);
4695 /* Patch for the return type */
4696 if (patch_stage == JDEP_METHOD_RETURN)
4698 jdep = CLASSD_LAST (ctxp->classd_list);
4699 JDEP_GET_PATCH (jdep) = &TREE_TYPE (TREE_TYPE (meth));
4701 /* This is the stop JDEP. METH allows the function's signature
4703 register_incomplete_type (JDEP_METHOD_END, NULL_TREE, meth, NULL_TREE);
4706 meth = add_method (this_class, flags, meth_name,
4707 build_java_signature (meth));
4709 /* Remember final parameters */
4710 MARK_FINAL_PARMS (meth, orig_arg);
4712 /* Fix the method argument list so we have the argument name
4714 fix_method_argument_names (orig_arg, meth);
4716 /* Register the parameter number and re-install the current line
4718 DECL_MAX_LOCALS (meth) = ctxp->formal_parameter_number+1;
4719 input_line = saved_lineno;
4721 /* Register exception specified by the `throws' keyword for
4722 resolution and set the method decl appropriate field to the list.
4723 Note: the grammar ensures that what we get here are class
4727 throws = nreverse (throws);
4728 for (current = throws; current; current = TREE_CHAIN (current))
4730 register_incomplete_type (JDEP_EXCEPTION, TREE_VALUE (current),
4731 NULL_TREE, NULL_TREE);
4732 JDEP_GET_PATCH (CLASSD_LAST (ctxp->classd_list)) =
4733 &TREE_VALUE (current);
4735 DECL_FUNCTION_THROWS (meth) = throws;
4738 if (TREE_TYPE (GET_CPC ()) != object_type_node)
4739 DECL_FUNCTION_WFL (meth) = id;
4741 /* Set the flag if we correctly processed a constructor */
4744 DECL_CONSTRUCTOR_P (meth) = 1;
4745 /* Compute and store the number of artificial parameters declared
4746 for this constructor */
4747 for (count = 0, current = TYPE_FIELDS (this_class); current;
4748 current = TREE_CHAIN (current))
4749 if (FIELD_LOCAL_ALIAS (current))
4751 DECL_FUNCTION_NAP (meth) = count;
4754 /* Eventually set the @deprecated tag flag */
4755 CHECK_DEPRECATED (meth);
4757 /* If doing xref, store column and line number information instead
4758 of the line number only. */
4760 DECL_SOURCE_LINE (meth) = EXPR_WFL_LINECOL (id);
4766 fix_method_argument_names (tree orig_arg, tree meth)
4768 tree arg = TYPE_ARG_TYPES (TREE_TYPE (meth));
4769 if (TREE_CODE (TREE_TYPE (meth)) == METHOD_TYPE)
4771 TREE_PURPOSE (arg) = this_identifier_node;
4772 arg = TREE_CHAIN (arg);
4774 while (orig_arg != end_params_node)
4776 TREE_PURPOSE (arg) = TREE_PURPOSE (orig_arg);
4777 orig_arg = TREE_CHAIN (orig_arg);
4778 arg = TREE_CHAIN (arg);
4782 /* Complete the method declaration with METHOD_BODY. */
4785 finish_method_declaration (tree method_body)
4789 if (!current_function_decl)
4792 flags = get_access_flags_from_decl (current_function_decl);
4794 /* 8.4.5 Method Body */
4795 if ((flags & ACC_ABSTRACT || flags & ACC_NATIVE) && method_body)
4797 tree name = DECL_NAME (current_function_decl);
4798 parse_error_context (DECL_FUNCTION_WFL (current_function_decl),
4799 "%s method `%s' can't have a body defined",
4800 (METHOD_NATIVE (current_function_decl) ?
4801 "Native" : "Abstract"),
4802 IDENTIFIER_POINTER (name));
4803 method_body = NULL_TREE;
4805 else if (!(flags & ACC_ABSTRACT) && !(flags & ACC_NATIVE) && !method_body)
4807 tree name = DECL_NAME (current_function_decl);
4809 (DECL_FUNCTION_WFL (current_function_decl),
4810 "Non native and non abstract method `%s' must have a body defined",
4811 IDENTIFIER_POINTER (name));
4812 method_body = NULL_TREE;
4815 if (flag_emit_class_files && method_body
4816 && TREE_CODE (method_body) == NOP_EXPR
4817 && TREE_TYPE (current_function_decl)
4818 && TREE_TYPE (TREE_TYPE (current_function_decl)) == void_type_node)
4819 method_body = build1 (RETURN_EXPR, void_type_node, NULL);
4821 BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (current_function_decl)) = method_body;
4822 maybe_absorb_scoping_blocks ();
4823 /* Exit function's body */
4825 /* Merge last line of the function with first line, directly in the
4826 function decl. It will be used to emit correct debug info. */
4827 if (!flag_emit_xref)
4828 DECL_FUNCTION_LAST_LINE (current_function_decl) = ctxp->last_ccb_indent1;
4830 /* Since function's argument's list are shared, reset the
4831 ARG_FINAL_P parameter that might have been set on some of this
4832 function parameters. */
4833 UNMARK_FINAL_PARMS (current_function_decl);
4835 /* So we don't have an irrelevant function declaration context for
4836 the next static block we'll see. */
4837 current_function_decl = NULL_TREE;
4840 /* Build a an error message for constructor circularity errors. */
4843 constructor_circularity_msg (tree from, tree to)
4845 static char string [4096];
4846 char *t = xstrdup (lang_printable_name (from, 2));
4847 sprintf (string, "`%s' invokes `%s'", t, lang_printable_name (to, 2));
4852 /* Verify a circular call to METH. Return 1 if an error is found, 0
4855 static GTY(()) tree vcc_list;
4857 verify_constructor_circularity (tree meth, tree current)
4861 for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
4863 if (TREE_VALUE (c) == meth)
4869 vcc_list = nreverse (vcc_list);
4870 for (liste = vcc_list; liste; liste = TREE_CHAIN (liste))
4873 (TREE_PURPOSE (TREE_PURPOSE (liste)), "%s",
4874 constructor_circularity_msg
4875 (TREE_VALUE (liste), TREE_VALUE (TREE_PURPOSE (liste))));
4879 t = xstrdup (lang_printable_name (meth, 2));
4880 parse_error_context (TREE_PURPOSE (c),
4881 "%s: recursive invocation of constructor `%s'",
4882 constructor_circularity_msg (current, meth), t);
4884 vcc_list = NULL_TREE;
4888 for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
4890 vcc_list = tree_cons (c, current, vcc_list);
4891 if (verify_constructor_circularity (meth, TREE_VALUE (c)))
4893 vcc_list = TREE_CHAIN (vcc_list);
4898 /* Check modifiers that can be declared but exclusively */
4901 check_modifiers_consistency (int flags)
4904 tree cl = NULL_TREE;
4906 THIS_MODIFIER_ONLY (flags, ACC_PUBLIC, PUBLIC_TK, acc_count, cl);
4907 THIS_MODIFIER_ONLY (flags, ACC_PRIVATE, PRIVATE_TK, acc_count, cl);
4908 THIS_MODIFIER_ONLY (flags, ACC_PROTECTED, PROTECTED_TK, acc_count, cl);
4911 (cl, "Inconsistent member declaration. At most one of `public', `private', or `protected' may be specified");
4915 THIS_MODIFIER_ONLY (flags, ACC_FINAL, FINAL_TK, acc_count, cl);
4916 THIS_MODIFIER_ONLY (flags, ACC_VOLATILE, VOLATILE_TK, acc_count, cl);
4918 parse_error_context (cl,
4919 "Inconsistent member declaration. At most one of `final' or `volatile' may be specified");
4922 /* Check the methode header METH for abstract specifics features */
4925 check_abstract_method_header (tree meth)
4927 int flags = get_access_flags_from_decl (meth);
4929 OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (ABSTRACT_TK), flags,
4930 ACC_ABSTRACT, "abstract method",
4931 IDENTIFIER_POINTER (DECL_NAME (meth)));
4932 OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (PUBLIC_TK), flags,
4933 ACC_PUBLIC, "abstract method",
4934 IDENTIFIER_POINTER (DECL_NAME (meth)));
4936 check_modifiers ("Illegal modifier `%s' for interface method",
4937 flags, INTERFACE_METHOD_MODIFIERS);
4940 /* Create a FUNCTION_TYPE node and start augmenting it with the
4941 declared function arguments. Arguments type that can't be resolved
4942 are left as they are, but the returned node is marked as containing
4943 incomplete types. */
4946 method_declarator (tree id, tree list)
4948 tree arg_types = NULL_TREE, current, node;
4949 tree meth = make_node (FUNCTION_TYPE);
4952 patch_stage = JDEP_NO_PATCH;
4954 if (GET_CPC () == error_mark_node)
4955 return error_mark_node;
4957 /* If we're dealing with an inner class constructor, we hide the
4958 this$<n> decl in the name field of its parameter declaration. We
4959 also might have to hide the outer context local alias
4960 initializers. Not done when the class is a toplevel class. */
4961 if (PURE_INNER_CLASS_DECL_P (GET_CPC ())
4962 && EXPR_WFL_NODE (id) == GET_CPC_UN ())
4964 tree aliases_list, type, thisn;
4965 /* First the aliases, linked to the regular parameters */
4967 build_alias_initializer_parameter_list (AIPL_FUNCTION_DECLARATION,
4968 TREE_TYPE (GET_CPC ()),
4970 list = chainon (nreverse (aliases_list), list);
4973 type = TREE_TYPE (DECL_CONTEXT (GET_CPC ()));
4974 thisn = build_current_thisn (TREE_TYPE (GET_CPC ()));
4975 list = tree_cons (build_wfl_node (thisn), build_pointer_type (type),
4979 for (current = list; current; current = TREE_CHAIN (current))
4982 tree wfl_name = TREE_PURPOSE (current);
4983 tree type = TREE_VALUE (current);
4984 tree name = EXPR_WFL_NODE (wfl_name);
4985 tree already, arg_node;
4986 tree type_wfl = NULL_TREE;
4989 /* Obtain a suitable type for resolution, if necessary */
4990 SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
4992 /* Process NAME, as it may specify extra dimension(s) for it */
4993 type = build_array_from_name (type, type_wfl, name, &name);
4994 EXPR_WFL_NODE (wfl_name) = name;
4996 real_type = GET_REAL_TYPE (type);
4997 if (TREE_CODE (real_type) == RECORD_TYPE)
4999 real_type = promote_type (real_type);
5000 if (TREE_CODE (type) == TREE_LIST)
5001 TREE_PURPOSE (type) = real_type;
5004 /* Check redefinition */
5005 for (already = arg_types; already; already = TREE_CHAIN (already))
5006 if (TREE_PURPOSE (already) == name)
5009 (wfl_name, "Variable `%s' is used more than once in the argument list of method `%s'",
5010 IDENTIFIER_POINTER (name),
5011 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
5015 /* If we've an incomplete argument type, we know there is a location
5016 to patch when the type get resolved, later. */
5020 patch_stage = JDEP_METHOD;
5021 type = register_incomplete_type (patch_stage,
5022 type_wfl, wfl_name, type);
5023 jdep = CLASSD_LAST (ctxp->classd_list);
5024 JDEP_MISC (jdep) = id;
5027 /* The argument node: a name and a (possibly) incomplete type. */
5028 arg_node = build_tree_list (name, real_type);
5029 /* Remember arguments declared final. */
5030 ARG_FINAL_P (arg_node) = ARG_FINAL_P (current);
5033 JDEP_GET_PATCH (jdep) = &TREE_VALUE (arg_node);
5034 TREE_CHAIN (arg_node) = arg_types;
5035 arg_types = arg_node;
5037 TYPE_ARG_TYPES (meth) = chainon (nreverse (arg_types), end_params_node);
5038 node = build_tree_list (id, meth);
5043 unresolved_type_p (tree wfl, tree *returned)
5045 if (TREE_CODE (wfl) == EXPR_WITH_FILE_LOCATION)
5049 tree decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (wfl));
5050 if (decl && current_class && (decl == TYPE_NAME (current_class)))
5051 *returned = TREE_TYPE (decl);
5052 else if (GET_CPC_UN () == EXPR_WFL_NODE (wfl))
5053 *returned = TREE_TYPE (GET_CPC ());
5055 *returned = NULL_TREE;
5064 /* From NAME, build a qualified identifier node using the
5065 qualification from the current package definition. */
5068 parser_qualified_classname (tree name)
5070 tree nested_class_name;
5072 if ((nested_class_name = maybe_make_nested_class_name (name)))
5073 return nested_class_name;
5076 return merge_qualified_name (ctxp->package, name);
5081 /* Called once the type a interface extends is resolved. Returns 0 if
5082 everything is OK. */
5085 parser_check_super_interface (tree super_decl, tree this_decl, tree this_wfl)
5087 tree super_type = TREE_TYPE (super_decl);
5089 /* Has to be an interface */
5090 if (!CLASS_INTERFACE (super_decl))
5093 (this_wfl, "%s `%s' can't implement/extend %s `%s'",
5094 (CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (this_decl))) ?
5095 "Interface" : "Class"),
5096 IDENTIFIER_POINTER (DECL_NAME (this_decl)),
5097 (TYPE_ARRAY_P (super_type) ? "array" : "class"),
5098 IDENTIFIER_POINTER (DECL_NAME (super_decl)));
5102 /* Check top-level interface access. Inner classes are subject to member
5103 access rules (6.6.1). */
5104 if (! INNER_CLASS_P (super_type)
5105 && check_pkg_class_access (DECL_NAME (super_decl),
5106 NULL_TREE, true, this_decl))
5109 SOURCE_FRONTEND_DEBUG (("Completing interface %s with %s",
5110 IDENTIFIER_POINTER (DECL_NAME (this_decl)),
5111 IDENTIFIER_POINTER (DECL_NAME (super_decl))));
5115 /* Makes sure that SUPER_DECL is suitable to extend THIS_DECL. Returns
5116 0 if everything is OK. */
5119 parser_check_super (tree super_decl, tree this_decl, tree wfl)
5121 tree super_type = TREE_TYPE (super_decl);
5123 /* SUPER should be a CLASS (neither an array nor an interface) */
5124 if (TYPE_ARRAY_P (super_type) || CLASS_INTERFACE (TYPE_NAME (super_type)))
5127 (wfl, "Class `%s' can't subclass %s `%s'",
5128 IDENTIFIER_POINTER (DECL_NAME (this_decl)),
5129 (CLASS_INTERFACE (TYPE_NAME (super_type)) ? "interface" : "array"),
5130 IDENTIFIER_POINTER (DECL_NAME (super_decl)));
5134 if (CLASS_FINAL (TYPE_NAME (super_type)))
5136 parse_error_context (wfl, "Can't subclass final classes: %s",
5137 IDENTIFIER_POINTER (DECL_NAME (super_decl)));
5141 /* Check top-level class scope. Inner classes are subject to member access
5143 if (! INNER_CLASS_P (super_type)
5144 && (check_pkg_class_access (DECL_NAME (super_decl), wfl, true, NULL_TREE)))
5147 SOURCE_FRONTEND_DEBUG (("Completing class %s with %s",
5148 IDENTIFIER_POINTER (DECL_NAME (this_decl)),
5149 IDENTIFIER_POINTER (DECL_NAME (super_decl))));
5153 /* Create a new dependency list and link it (in a LIFO manner) to the
5154 CTXP list of type dependency list. */
5157 create_jdep_list (struct parser_ctxt *ctxp)
5159 jdeplist *new = xmalloc (sizeof (jdeplist));
5160 new->first = new->last = NULL;
5161 new->next = ctxp->classd_list;
5162 ctxp->classd_list = new;
5166 reverse_jdep_list (struct parser_ctxt *ctxp)
5168 jdeplist *prev = NULL, *current, *next;
5169 for (current = ctxp->classd_list; current; current = next)
5171 next = current->next;
5172 current->next = prev;
5178 /* Create a fake pointer based on the ID stored in
5179 TYPE_NAME. TYPE_NAME can be a WFL or a incomplete type asking to be
5180 registered again. */
5183 obtain_incomplete_type (tree type_name)
5185 tree ptr = NULL_TREE, name;
5187 if (TREE_CODE (type_name) == EXPR_WITH_FILE_LOCATION)
5188 name = EXPR_WFL_NODE (type_name);
5189 else if (INCOMPLETE_TYPE_P (type_name))
5190 name = TYPE_NAME (type_name);
5194 /* Workaround from build_pointer_type for incomplete types. */
5195 BUILD_PTR_FROM_NAME (ptr, name);
5196 TYPE_MODE (ptr) = ptr_mode;
5202 /* Register a incomplete type whose name is WFL. Reuse PTR if PTR is
5203 non NULL instead of computing a new fake type based on WFL. The new
5204 dependency is inserted in the current type dependency list, in FIFO
5208 register_incomplete_type (int kind, tree wfl, tree decl, tree ptr)
5210 jdep *new = xmalloc (sizeof (jdep));
5212 if (!ptr && kind != JDEP_METHOD_END) /* JDEP_METHOD_END is a mere marker */
5213 ptr = obtain_incomplete_type (wfl);
5215 JDEP_KIND (new) = kind;
5216 JDEP_DECL (new) = decl;
5217 JDEP_TO_RESOLVE (new) = ptr;
5218 JDEP_WFL (new) = wfl;
5219 JDEP_CHAIN (new) = NULL;
5220 JDEP_MISC (new) = NULL_TREE;
5221 /* For some dependencies, set the enclosing class of the current
5222 class to be the enclosing context */
5223 if ((kind == JDEP_INTERFACE || kind == JDEP_ANONYMOUS || kind == JDEP_SUPER)
5224 && GET_ENCLOSING_CPC ())
5225 JDEP_ENCLOSING (new) = TREE_VALUE (GET_ENCLOSING_CPC ());
5227 JDEP_ENCLOSING (new) = GET_CPC ();
5228 JDEP_GET_PATCH (new) = (tree *)NULL;
5230 JDEP_INSERT (ctxp->classd_list, new);
5235 /* This checks for circular references with innerclasses. We start
5236 from SOURCE and should never reach TARGET. Extended/implemented
5237 types in SOURCE have their enclosing context checked not to reach
5238 TARGET. When the last enclosing context of SOURCE is reached, its
5239 extended/implemented types are also checked not to reach TARGET.
5240 In case of error, WFL of the offending type is returned; NULL_TREE
5244 check_inner_circular_reference (tree source, tree target)
5250 for (i = 0; BINFO_BASE_ITERATE (TYPE_BINFO (source), i, base_binfo); i++)
5254 /* We can end up with a NULL_TREE or an incomplete type here if
5255 we encountered previous type resolution errors. It's safe to
5256 simply ignore these cases. */
5257 su = BINFO_TYPE (base_binfo);
5258 if (INCOMPLETE_TYPE_P (su))
5261 if (inherits_from_p (su, target))
5262 return lookup_cl (TYPE_NAME (su));
5264 for (ctx = DECL_CONTEXT (TYPE_NAME (su)); ctx; ctx = DECL_CONTEXT (ctx))
5266 /* An enclosing context shouldn't be TARGET */
5267 if (ctx == TYPE_NAME (target))
5268 return lookup_cl (TYPE_NAME (su));
5270 /* When we reach the enclosing last context, start a check
5271 on it, with the same target */
5272 if (! DECL_CONTEXT (ctx) &&
5273 (cl = check_inner_circular_reference (TREE_TYPE (ctx), target)))
5280 /* Explore TYPE's `extends' clause member(s) and return the WFL of the
5281 offending type if a circularity is detected. NULL_TREE is returned
5282 otherwise. TYPE can be an interface or a class. */
5285 check_circular_reference (tree type)
5290 if (!BINFO_N_BASE_BINFOS (TYPE_BINFO (type)))
5293 if (! CLASS_INTERFACE (TYPE_NAME (type)))
5295 if (inherits_from_p (CLASSTYPE_SUPER (type), type))
5296 return lookup_cl (TYPE_NAME (type));
5300 for (i = 0; BINFO_BASE_ITERATE (TYPE_BINFO (type), i, base_binfo); i++)
5302 if (BINFO_TYPE (base_binfo) != object_type_node
5303 && interface_of_p (type, BINFO_TYPE (base_binfo)))
5304 return lookup_cl (TYPE_NAME (BINFO_TYPE (base_binfo)));
5310 java_check_circular_reference (void)
5313 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
5315 tree type = TREE_TYPE (current);
5318 cl = check_circular_reference (type);
5320 cl = check_inner_circular_reference (type, type);
5322 parse_error_context (cl, "Cyclic class inheritance%s",
5323 (cyclic_inheritance_report ?
5324 cyclic_inheritance_report : ""));
5328 /* Augment the parameter list PARM with parameters crafted to
5329 initialize outer context locals aliases. Through ARTIFICIAL, a
5330 count is kept of the number of crafted parameters. MODE governs
5331 what eventually gets created: something suitable for a function
5332 creation or a function invocation, either the constructor or
5336 build_alias_initializer_parameter_list (int mode, tree class_type, tree parm,
5340 tree additional_parms = NULL_TREE;
5342 for (field = TYPE_FIELDS (class_type); field; field = TREE_CHAIN (field))
5343 if (FIELD_LOCAL_ALIAS (field))
5345 const char *buffer = IDENTIFIER_POINTER (DECL_NAME (field));
5346 tree purpose = NULL_TREE, value = NULL_TREE, name = NULL_TREE;
5351 case AIPL_FUNCTION_DECLARATION:
5352 MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (mangled_id,
5354 purpose = build_wfl_node (mangled_id);
5355 if (TREE_CODE (TREE_TYPE (field)) == POINTER_TYPE)
5356 value = build_wfl_node (TYPE_NAME (TREE_TYPE (field)));
5358 value = TREE_TYPE (field);
5361 case AIPL_FUNCTION_CREATION:
5362 MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (purpose,
5364 value = TREE_TYPE (field);
5367 case AIPL_FUNCTION_FINIT_INVOCATION:
5368 MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (mangled_id,
5370 /* Now, this is wrong. purpose should always be the NAME
5371 of something and value its matching value (decl, type,
5372 etc...) FIXME -- but there is a lot to fix. */
5374 /* When invoked for this kind of operation, we already
5375 know whether a field is used or not. */
5376 purpose = TREE_TYPE (field);
5377 value = build_wfl_node (mangled_id);
5380 case AIPL_FUNCTION_CTOR_INVOCATION:
5381 /* There are two case: the constructor invocation happens
5382 outside the local inner, in which case, locales from the outer
5383 context are directly used.
5385 Otherwise, we fold to using the alias directly. */
5386 if (class_type == current_class)
5390 name = get_identifier (&buffer[4]);
5391 value = IDENTIFIER_LOCAL_VALUE (name);
5395 additional_parms = tree_cons (purpose, value, additional_parms);
5399 if (additional_parms)
5401 if (ANONYMOUS_CLASS_P (class_type)
5402 && mode == AIPL_FUNCTION_CTOR_INVOCATION)
5403 additional_parms = nreverse (additional_parms);
5404 parm = chainon (additional_parms, parm);
5410 /* Craft a constructor for CLASS_DECL -- what we should do when none
5411 where found. ARGS is non NULL when a special signature must be
5412 enforced. This is the case for anonymous classes. */
5415 craft_constructor (tree class_decl, tree args)
5417 tree class_type = TREE_TYPE (class_decl);
5418 tree parm = NULL_TREE;
5419 /* Inherit access flags for the constructor from its enclosing class. */
5420 int valid_ctor_flags = ACC_PUBLIC | ACC_PROTECTED | ACC_PRIVATE;
5421 int flags = (get_access_flags_from_decl (class_decl) & valid_ctor_flags);
5422 int i = 0, artificial = 0;
5423 tree decl, ctor_name;
5426 ctor_name = init_identifier_node;
5428 /* If we're dealing with an inner class constructor, we hide the
5429 this$<n> decl in the name field of its parameter declaration. */
5430 if (PURE_INNER_CLASS_TYPE_P (class_type))
5432 tree type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class_type)));
5433 parm = tree_cons (build_current_thisn (class_type),
5434 build_pointer_type (type), parm);
5436 /* Some more arguments to be hidden here. The values of the local
5437 variables of the outer context that the inner class needs to see. */
5438 parm = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION,
5443 /* Then if there are any args to be enforced, enforce them now */
5444 for (; args && args != end_params_node; args = TREE_CHAIN (args))
5446 sprintf (buffer, "parm%d", i++);
5447 parm = tree_cons (get_identifier (buffer), TREE_VALUE (args), parm);
5450 CRAFTED_PARAM_LIST_FIXUP (parm);
5451 decl = create_artificial_method (class_type, flags, void_type_node,
5453 fix_method_argument_names (parm, decl);
5454 /* Now, mark the artificial parameters. */
5455 DECL_FUNCTION_NAP (decl) = artificial;
5456 DECL_FUNCTION_SYNTHETIC_CTOR (decl) = DECL_CONSTRUCTOR_P (decl) = 1;
5457 DECL_INLINE (decl) = 1;
5462 /* Fix the constructors. This will be called right after circular
5463 references have been checked. It is necessary to fix constructors
5464 early even if no code generation will take place for that class:
5465 some generated constructor might be required by the class whose
5466 compilation triggered this one to be simply loaded. */
5469 java_fix_constructors (void)
5473 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
5475 tree class_type = TREE_TYPE (current);
5479 if (CLASS_INTERFACE (TYPE_NAME (class_type)))
5482 output_class = current_class = class_type;
5483 for (decl = TYPE_METHODS (class_type); decl; decl = TREE_CHAIN (decl))
5485 if (DECL_CONSTRUCTOR_P (decl))
5487 fix_constructors (decl);
5492 /* Anonymous class constructor can't be generated that early. */
5493 if (!saw_ctor && !ANONYMOUS_CLASS_P (class_type))
5494 craft_constructor (current, NULL_TREE);
5498 /* safe_layout_class just makes sure that we can load a class without
5499 disrupting the current_class, input_file, input_line, etc, information
5500 about the class processed currently. */
5503 safe_layout_class (tree class)
5505 tree save_current_class = current_class;
5506 location_t save_location = input_location;
5508 layout_class (class);
5510 current_class = save_current_class;
5511 input_location = save_location;
5515 jdep_resolve_class (jdep *dep)
5519 if (JDEP_RESOLVED_P (dep))
5520 decl = JDEP_RESOLVED_DECL (dep);
5523 decl = resolve_class (JDEP_ENCLOSING (dep), JDEP_TO_RESOLVE (dep),
5524 JDEP_DECL (dep), JDEP_WFL (dep));
5525 JDEP_RESOLVED (dep, decl);
5526 /* If there is no WFL, that's ok. We generate this warning
5528 if (decl && JDEP_WFL (dep) != NULL_TREE)
5529 check_deprecation (JDEP_WFL (dep), decl);
5533 complete_class_report_errors (dep);
5534 else if (INNER_CLASS_DECL_P (decl))
5536 tree inner = TREE_TYPE (decl);
5537 if (! CLASS_LOADED_P (inner))
5539 safe_layout_class (inner);
5540 if (TYPE_SIZE (inner) == error_mark_node)
5541 TYPE_SIZE (inner) = NULL_TREE;
5543 check_inner_class_access (decl, JDEP_ENCLOSING (dep), JDEP_WFL (dep));
5548 /* Complete unsatisfied class declaration and their dependencies */
5551 java_complete_class (void)
5558 /* Process imports */
5561 /* Reverse things so we have the right order */
5562 ctxp->class_list = nreverse (ctxp->class_list);
5563 ctxp->classd_list = reverse_jdep_list (ctxp);
5565 for (cclassd = ctxp->classd_list, cclass = ctxp->class_list;
5567 cclass = TREE_CHAIN (cclass), cclassd = CLASSD_CHAIN (cclassd))
5571 /* We keep the compilation unit imports in the class so that
5572 they can be used later to resolve type dependencies that
5573 aren't necessary to solve now. */
5574 TYPE_IMPORT_LIST (TREE_TYPE (cclass)) = ctxp->import_list;
5575 TYPE_IMPORT_DEMAND_LIST (TREE_TYPE (cclass)) = ctxp->import_demand_list;
5577 for (dep = CLASSD_FIRST (cclassd); dep; dep = JDEP_CHAIN (dep))
5580 if (!(decl = jdep_resolve_class (dep)))
5583 /* Now it's time to patch */
5584 switch (JDEP_KIND (dep))
5587 /* Simply patch super */
5588 if (parser_check_super (decl, JDEP_DECL (dep), JDEP_WFL (dep)))
5590 BINFO_TYPE (BINFO_BASE_BINFO
5591 (TYPE_BINFO (TREE_TYPE (JDEP_DECL (dep))), 0))
5597 /* We do part of the job done in add_field */
5598 tree field_decl = JDEP_DECL (dep);
5599 tree field_type = TREE_TYPE (decl);
5600 if (TREE_CODE (field_type) == RECORD_TYPE)
5601 field_type = promote_type (field_type);
5602 TREE_TYPE (field_decl) = field_type;
5603 DECL_ALIGN (field_decl) = 0;
5604 DECL_USER_ALIGN (field_decl) = 0;
5605 layout_decl (field_decl, 0);
5606 SOURCE_FRONTEND_DEBUG
5607 (("Completed field/var decl `%s' with `%s'",
5608 IDENTIFIER_POINTER (DECL_NAME (field_decl)),
5609 IDENTIFIER_POINTER (DECL_NAME (decl))));
5612 case JDEP_METHOD: /* We start patching a method */
5613 case JDEP_METHOD_RETURN:
5619 type = TREE_TYPE(decl);
5620 if (TREE_CODE (type) == RECORD_TYPE)
5621 type = promote_type (type);
5622 JDEP_APPLY_PATCH (dep, type);
5623 SOURCE_FRONTEND_DEBUG
5624 (((JDEP_KIND (dep) == JDEP_METHOD_RETURN ?
5625 "Completing fct `%s' with ret type `%s'":
5626 "Completing arg `%s' with type `%s'"),
5627 IDENTIFIER_POINTER (EXPR_WFL_NODE
5628 (JDEP_DECL_WFL (dep))),
5629 IDENTIFIER_POINTER (DECL_NAME (decl))));
5633 dep = JDEP_CHAIN (dep);
5634 if (JDEP_KIND (dep) == JDEP_METHOD_END)
5637 decl = jdep_resolve_class (dep);
5641 tree mdecl = JDEP_DECL (dep), signature;
5642 /* Recompute and reset the signature, check first that
5643 all types are now defined. If they're not,
5644 don't build the signature. */
5645 if (check_method_types_complete (mdecl))
5647 signature = build_java_signature (TREE_TYPE (mdecl));
5648 set_java_signature (TREE_TYPE (mdecl), signature);
5655 case JDEP_INTERFACE:
5656 if (parser_check_super_interface (decl, JDEP_DECL (dep),
5659 parser_add_interface (JDEP_DECL (dep), decl, JDEP_WFL (dep));
5664 type = TREE_TYPE(decl);
5665 if (TREE_CODE (type) == RECORD_TYPE)
5666 type = promote_type (type);
5667 JDEP_APPLY_PATCH (dep, type);
5671 JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
5672 SOURCE_FRONTEND_DEBUG
5673 (("Completing a random type dependency on a '%s' node",
5674 tree_code_name [TREE_CODE (JDEP_DECL (dep))]));
5677 case JDEP_EXCEPTION:
5678 JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
5679 SOURCE_FRONTEND_DEBUG
5680 (("Completing `%s' `throws' argument node",
5681 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)))));
5684 case JDEP_ANONYMOUS:
5685 patch_anonymous_class (decl, JDEP_DECL (dep), JDEP_WFL (dep));
5696 /* Resolve class CLASS_TYPE. Handle the case of trying to resolve an
5700 resolve_class (tree enclosing, tree class_type, tree decl, tree cl)
5702 tree tname = TYPE_NAME (class_type);
5703 tree resolved_type = TREE_TYPE (class_type);
5705 tree resolved_type_decl;
5707 if (resolved_type != NULL_TREE)
5709 tree resolved_type_decl = TYPE_NAME (resolved_type);
5710 if (resolved_type_decl == NULL_TREE
5711 || TREE_CODE (resolved_type_decl) == IDENTIFIER_NODE)
5713 resolved_type_decl = build_decl (TYPE_DECL,
5714 TYPE_NAME (class_type),
5717 return resolved_type_decl;
5720 /* 1- Check to see if we have an array. If true, find what we really
5722 if ((array_dims = build_type_name_from_array_name (tname,
5723 &TYPE_NAME (class_type))))
5724 WFL_STRIP_BRACKET (cl, cl);
5726 /* 2- Resolve the bare type */
5727 if (!(resolved_type_decl = do_resolve_class (enclosing, class_type,
5730 resolved_type = TREE_TYPE (resolved_type_decl);
5732 /* 3- If we have an array, reconstruct the array down to its nesting */
5735 for (; array_dims; array_dims--)
5736 resolved_type = build_java_array_type (resolved_type, -1);
5737 resolved_type_decl = TYPE_NAME (resolved_type);
5739 TREE_TYPE (class_type) = resolved_type;
5740 return resolved_type_decl;
5743 /* Effectively perform the resolution of class CLASS_TYPE. DECL or CL
5744 are used to report error messages; CL must either be NULL_TREE or a
5745 WFL wrapping a class. Do not try to replace TYPE_NAME (class_type)
5746 by a variable, since it is changed by find_in_imports{_on_demand}
5747 and (but it doesn't really matter) qualify_and_find. */
5750 do_resolve_class (tree enclosing, tree class_type, tree decl, tree cl)
5752 tree new_class_decl = NULL_TREE, super = NULL_TREE;
5753 tree saved_enclosing_type = enclosing ? TREE_TYPE (enclosing) : NULL_TREE;
5755 htab_t circularity_hash;
5757 if (QUALIFIED_P (TYPE_NAME (class_type)))
5759 /* If the type name is of the form `Q . Id', then Q is either a
5760 package name or a class name. First we try to find Q as a
5761 class and then treat Id as a member type. If we can't find Q
5762 as a class then we fall through. */
5763 tree q, left, left_type, right;
5764 if (split_qualified_name (&left, &right, TYPE_NAME (class_type)) == 0)
5766 BUILD_PTR_FROM_NAME (left_type, left);
5767 q = do_resolve_class (enclosing, left_type, decl, cl);
5771 saved_enclosing_type = TREE_TYPE (q);
5772 BUILD_PTR_FROM_NAME (class_type, right);
5779 /* This hash table is used to register the classes we're going
5780 through when searching the current class as an inner class, in
5781 order to detect circular references. Remember to free it before
5782 returning the section 0- of this function. */
5783 circularity_hash = htab_create (20, htab_hash_pointer, htab_eq_pointer,
5786 /* 0- Search in the current class as an inner class.
5787 Maybe some code here should be added to load the class or
5788 something, at least if the class isn't an inner class and ended
5789 being loaded from class file. FIXME. */
5792 new_class_decl = resolve_inner_class (circularity_hash, cl, &enclosing,
5793 &super, class_type);
5797 /* If we haven't found anything because SUPER reached Object and
5798 ENCLOSING happens to be an innerclass, try the enclosing context. */
5799 if ((!super || super == object_type_node) &&
5800 enclosing && INNER_CLASS_DECL_P (enclosing))
5801 enclosing = DECL_CONTEXT (enclosing);
5803 enclosing = NULL_TREE;
5806 htab_delete (circularity_hash);
5809 return new_class_decl;
5812 /* 1- Check for the type in single imports. This will change
5813 TYPE_NAME() if something relevant is found */
5814 find_in_imports (saved_enclosing_type, class_type);
5816 /* 2- And check for the type in the current compilation unit */
5817 if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
5819 if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)))
5820 load_class (TYPE_NAME (class_type), 0);
5821 return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
5824 /* 3- Search according to the current package definition */
5825 if (!QUALIFIED_P (TYPE_NAME (class_type)))
5827 if ((new_class_decl = qualify_and_find (class_type, ctxp->package,
5828 TYPE_NAME (class_type))))
5829 return new_class_decl;
5832 /* 4- Check the import on demands. Don't allow bar.baz to be
5833 imported from foo.* */
5834 if (!QUALIFIED_P (TYPE_NAME (class_type)))
5835 if (find_in_imports_on_demand (saved_enclosing_type, class_type))
5838 /* If found in find_in_imports_on_demand, the type has already been
5840 if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
5841 return new_class_decl;
5843 /* 5- Try with a name qualified with the package name we've seen so far */
5844 if (!QUALIFIED_P (TYPE_NAME (class_type)))
5848 /* If there is a current package (ctxp->package), it's the first
5849 element of package_list and we can skip it. */
5850 for (package = (ctxp->package ?
5851 TREE_CHAIN (package_list) : package_list);
5852 package; package = TREE_CHAIN (package))
5853 if ((new_class_decl = qualify_and_find (class_type,
5854 TREE_PURPOSE (package),
5855 TYPE_NAME (class_type))))
5856 return new_class_decl;
5859 /* 5- Check another compilation unit that bears the name of type */
5860 load_class (TYPE_NAME (class_type), 0);
5863 cl = lookup_cl (decl);
5865 /* If we don't have a value for CL, then we're being called recursively.
5866 We can't check package access just yet, but it will be taken care of
5870 if (check_pkg_class_access (TYPE_NAME (class_type), cl, true, NULL_TREE))
5874 /* 6- Last call for a resolution */
5875 decl_result = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
5877 /* The final lookup might have registered a.b.c into a.b$c If we
5878 failed at the first lookup, progressively change the name if
5879 applicable and use the matching DECL instead. */
5880 if (!decl_result && QUALIFIED_P (TYPE_NAME (class_type)))
5883 tree name = TYPE_NAME (class_type);
5884 char *namebuffer = alloca (IDENTIFIER_LENGTH (name) + 1);
5886 strcpy (namebuffer, IDENTIFIER_POINTER (name));
5890 /* Reach the last '.', and if applicable, replace it by a `$' and
5891 see if this exists as a type. */
5892 if ((separator = strrchr (namebuffer, '.')))
5895 name = get_identifier (namebuffer);
5896 decl_result = IDENTIFIER_CLASS_VALUE (name);
5898 } while (!decl_result && separator);
5904 qualify_and_find (tree class_type, tree package, tree name)
5906 tree new_qualified = merge_qualified_name (package, name);
5907 tree new_class_decl;
5909 if (!IDENTIFIER_CLASS_VALUE (new_qualified))
5910 load_class (new_qualified, 0);
5911 if ((new_class_decl = IDENTIFIER_CLASS_VALUE (new_qualified)))
5913 if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)))
5914 load_class (TREE_TYPE (new_class_decl), 0);
5915 TYPE_NAME (class_type) = new_qualified;
5916 return IDENTIFIER_CLASS_VALUE (new_qualified);
5921 /* Resolve NAME and lay it out (if not done and if not the current
5922 parsed class). Return a decl node. This function is meant to be
5923 called when type resolution is necessary during the walk pass. */
5926 resolve_and_layout (tree something, tree cl)
5928 tree decl, decl_type;
5930 /* Don't do that on the current class */
5931 if (something == current_class)
5932 return TYPE_NAME (current_class);
5934 /* Don't do anything for void and other primitive types */
5935 if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
5938 /* Pointer types can be reall pointer types or fake pointers. When
5939 finding a real pointer, recheck for primitive types */
5940 if (TREE_CODE (something) == POINTER_TYPE)
5942 if (TREE_TYPE (something))
5944 something = TREE_TYPE (something);
5945 if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
5949 something = TYPE_NAME (something);
5952 /* Don't do anything for arrays of primitive types */
5953 if (TREE_CODE (something) == RECORD_TYPE && TYPE_ARRAY_P (something)
5954 && JPRIMITIVE_TYPE_P (TYPE_ARRAY_ELEMENT (something)))
5957 /* Something might be a WFL */
5958 if (TREE_CODE (something) == EXPR_WITH_FILE_LOCATION)
5959 something = EXPR_WFL_NODE (something);
5961 /* Otherwise, if something is not and IDENTIFIER_NODE, it can be a a
5962 TYPE_DECL or a real TYPE */
5963 else if (TREE_CODE (something) != IDENTIFIER_NODE)
5964 something = (TREE_CODE (TYPE_NAME (something)) == TYPE_DECL ?
5965 DECL_NAME (TYPE_NAME (something)) : TYPE_NAME (something));
5967 if (!(decl = resolve_no_layout (something, cl)))
5970 /* Resolve and layout if necessary */
5971 decl_type = TREE_TYPE (decl);
5972 layout_class_methods (decl_type);
5974 if (CLASS_FROM_SOURCE_P (decl_type))
5975 java_check_methods (decl);
5976 /* Layout the type if necessary */
5977 if (decl_type != current_class && !CLASS_LOADED_P (decl_type))
5978 safe_layout_class (decl_type);
5983 /* Resolve a class, returns its decl but doesn't perform any
5984 layout. The current parsing context is saved and restored */
5987 resolve_no_layout (tree name, tree cl)
5990 BUILD_PTR_FROM_NAME (ptr, name);
5991 java_parser_context_save_global ();
5992 decl = resolve_class (TYPE_NAME (current_class), ptr, NULL_TREE, cl);
5993 java_parser_context_restore_global ();
5998 /* Called when reporting errors. Skip the '[]'s in a complex array
5999 type description that failed to be resolved. purify_type_name can't
6000 use an identifier tree. */
6003 purify_type_name (const char *name)
6005 int len = strlen (name);
6008 STRING_STRIP_BRACKETS (name, len, bracket_found);
6011 char *stripped_name = xmemdup (name, len, len+1);
6012 stripped_name [len] = '\0';
6013 return stripped_name;
6018 /* The type CURRENT refers to can't be found. We print error messages. */
6021 complete_class_report_errors (jdep *dep)
6025 if (!JDEP_WFL (dep))
6028 name = IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)));
6029 switch (JDEP_KIND (dep))
6033 (JDEP_WFL (dep), "Superclass `%s' of class `%s' not found",
6034 purify_type_name (name),
6035 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
6039 (JDEP_WFL (dep), "Type `%s' not found in declaration of field `%s'",
6040 purify_type_name (name),
6041 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
6043 case JDEP_METHOD: /* Covers arguments */
6045 (JDEP_WFL (dep), "Type `%s' not found in the declaration of the argument `%s' of method `%s'",
6046 purify_type_name (name),
6047 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))),
6048 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_MISC (dep))));
6050 case JDEP_METHOD_RETURN: /* Covers return type */
6052 (JDEP_WFL (dep), "Type `%s' not found in the declaration of the return type of method `%s'",
6053 purify_type_name (name),
6054 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))));
6056 case JDEP_INTERFACE:
6058 (JDEP_WFL (dep), "Superinterface `%s' of %s `%s' not found",
6059 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))),
6060 (CLASS_OR_INTERFACE (JDEP_DECL (dep), "class", "interface")),
6061 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
6065 (JDEP_WFL (dep), "Type `%s' not found in the declaration of the local variable `%s'",
6066 purify_type_name (IDENTIFIER_POINTER
6067 (EXPR_WFL_NODE (JDEP_WFL (dep)))),
6068 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
6070 case JDEP_EXCEPTION: /* As specified by `throws' */
6072 (JDEP_WFL (dep), "Class `%s' not found in `throws'",
6073 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))));
6076 /* Fix for -Wall. Just break doing nothing. The error will be
6082 /* Return a static string containing the DECL prototype string. If
6083 DECL is a constructor, use the class name instead of the form
6087 get_printable_method_name (tree decl)
6089 const char *to_return;
6090 tree name = NULL_TREE;
6092 if (DECL_CONSTRUCTOR_P (decl))
6094 name = DECL_NAME (decl);
6095 DECL_NAME (decl) = DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)));
6098 to_return = lang_printable_name (decl, 2);
6099 if (DECL_CONSTRUCTOR_P (decl))
6100 DECL_NAME (decl) = name;
6105 /* Track method being redefined inside the same class. As a side
6106 effect, set DECL_NAME to an IDENTIFIER (prior entering this
6107 function it's a FWL, so we can track errors more accurately.) */
6110 check_method_redefinition (tree class, tree method)
6114 /* There's no need to verify <clinit> and finit$ and instinit$ */
6115 if (DECL_CLINIT_P (method)
6116 || DECL_FINIT_P (method) || DECL_INSTINIT_P (method))
6119 sig = TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (method));
6120 for (redef = TYPE_METHODS (class); redef; redef = TREE_CHAIN (redef))
6122 if (redef == method)
6124 if (DECL_NAME (redef) == DECL_NAME (method)
6125 && sig == TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (redef))
6126 && !DECL_ARTIFICIAL (method))
6129 (DECL_FUNCTION_WFL (method), "Duplicate %s declaration `%s'",
6130 (DECL_CONSTRUCTOR_P (redef) ? "constructor" : "method"),
6131 get_printable_method_name (redef));
6138 /* Return 1 if check went ok, 0 otherwise. */
6140 check_abstract_method_definitions (int do_interface, tree class_decl,
6143 tree class = TREE_TYPE (class_decl);
6144 tree method, end_type;
6147 end_type = (do_interface ? object_type_node : type);
6148 for (method = TYPE_METHODS (type); method; method = TREE_CHAIN (method))
6150 tree other_super, other_method, method_sig, method_name;
6152 int end_type_reached = 0;
6154 if (!METHOD_ABSTRACT (method) || METHOD_FINAL (method))
6157 /* Now verify that somewhere in between TYPE and CLASS,
6158 abstract method METHOD gets a non abstract definition
6159 that is inherited by CLASS. */
6161 method_sig = build_java_signature (TREE_TYPE (method));
6162 method_name = DECL_NAME (method);
6163 if (TREE_CODE (method_name) == EXPR_WITH_FILE_LOCATION)
6164 method_name = EXPR_WFL_NODE (method_name);
6166 other_super = class;
6168 if (other_super == end_type)
6169 end_type_reached = 1;
6172 for (other_method = TYPE_METHODS (other_super); other_method;
6173 other_method = TREE_CHAIN (other_method))
6175 tree s = build_java_signature (TREE_TYPE (other_method));
6176 tree other_name = DECL_NAME (other_method);
6178 if (TREE_CODE (other_name) == EXPR_WITH_FILE_LOCATION)
6179 other_name = EXPR_WFL_NODE (other_name);
6180 if (!DECL_CLINIT_P (other_method)
6181 && !DECL_CONSTRUCTOR_P (other_method)
6182 && method_name == other_name
6184 && !METHOD_ABSTRACT (other_method))
6190 other_super = CLASSTYPE_SUPER (other_super);
6191 } while (!end_type_reached);
6193 /* Report that abstract METHOD didn't find an implementation
6194 that CLASS can use. */
6197 char *t = xstrdup (lang_printable_name
6198 (TREE_TYPE (TREE_TYPE (method)), 0));
6199 tree ccn = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
6202 (lookup_cl (class_decl),
6203 "Class `%s' doesn't define the abstract method `%s %s' from %s `%s'. This method must be defined or %s `%s' must be declared abstract",
6204 IDENTIFIER_POINTER (DECL_NAME (class_decl)),
6205 t, lang_printable_name (method, 2),
6206 (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))) ?
6207 "interface" : "class"),
6208 IDENTIFIER_POINTER (ccn),
6209 (CLASS_INTERFACE (class_decl) ? "interface" : "class"),
6210 IDENTIFIER_POINTER (DECL_NAME (class_decl)));
6216 if (ok && do_interface)
6218 /* Check for implemented interfaces. */
6223 ok && BINFO_BASE_ITERATE (TYPE_BINFO (type), i, base_binfo);
6225 ok = check_abstract_method_definitions (1, class_decl,
6226 BINFO_TYPE (base_binfo));
6232 /* Check that CLASS_DECL somehow implements all inherited abstract
6236 java_check_abstract_method_definitions (tree class_decl)
6238 tree class = TREE_TYPE (class_decl);
6239 tree super, base_binfo;
6242 if (CLASS_ABSTRACT (class_decl))
6245 /* Check for inherited types */
6248 super = CLASSTYPE_SUPER (super);
6249 check_abstract_method_definitions (0, class_decl, super);
6250 } while (super != object_type_node);
6252 /* Check for implemented interfaces. */
6253 for (i = 1; BINFO_BASE_ITERATE (TYPE_BINFO (class), i, base_binfo); i++)
6254 check_abstract_method_definitions (1, class_decl, BINFO_TYPE (base_binfo));
6257 /* Check all the types method DECL uses and return 1 if all of them
6258 are now complete, 0 otherwise. This is used to check whether its
6259 safe to build a method signature or not. */
6262 check_method_types_complete (tree decl)
6264 tree type = TREE_TYPE (decl);
6267 if (!INCOMPLETE_TYPE_P (TREE_TYPE (type)))
6270 args = TYPE_ARG_TYPES (type);
6271 if (TREE_CODE (type) == METHOD_TYPE)
6272 args = TREE_CHAIN (args);
6273 for (; args != end_params_node; args = TREE_CHAIN (args))
6274 if (INCOMPLETE_TYPE_P (TREE_VALUE (args)))
6280 /* Visible interface to check methods contained in CLASS_DECL */
6283 java_check_methods (tree class_decl)
6285 if (CLASS_METHOD_CHECKED_P (TREE_TYPE (class_decl)))
6288 if (CLASS_INTERFACE (class_decl))
6289 java_check_abstract_methods (class_decl);
6291 java_check_regular_methods (class_decl);
6293 CLASS_METHOD_CHECKED_P (TREE_TYPE (class_decl)) = 1;
6296 /* Like not_accessible_p, but doesn't refer to the current class at
6299 hack_is_accessible_p (tree member, tree from_where)
6301 int flags = get_access_flags_from_decl (member);
6303 if (from_where == DECL_CONTEXT (member)
6304 || (flags & ACC_PUBLIC))
6307 if ((flags & ACC_PROTECTED))
6309 if (inherits_from_p (from_where, DECL_CONTEXT (member)))
6313 if ((flags & ACC_PRIVATE))
6316 /* Package private, or protected. */
6317 return in_same_package (TYPE_NAME (from_where),
6318 TYPE_NAME (DECL_CONTEXT (member)));
6321 /* Check all the methods of CLASS_DECL. Methods are first completed
6322 then checked according to regular method existence rules. If no
6323 constructor for CLASS_DECL were encountered, then build its
6326 java_check_regular_methods (tree class_decl)
6328 int saw_constructor = ANONYMOUS_CLASS_P (TREE_TYPE (class_decl));
6330 tree class = TREE_TYPE (class_decl);
6331 tree found = NULL_TREE;
6334 /* It is not necessary to check methods defined in java.lang.Object */
6335 if (class == object_type_node)
6338 if (!TYPE_NVIRTUALS (class))
6339 TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));
6341 /* Should take interfaces into account. FIXME */
6342 for (method = TYPE_METHODS (class); method; method = TREE_CHAIN (method))
6345 tree method_wfl = DECL_FUNCTION_WFL (method);
6348 /* Check for redefinitions */
6349 if (check_method_redefinition (class, method))
6352 /* We verify things thrown by the method. They must inherit from
6353 java.lang.Throwable. */
6354 for (mthrows = DECL_FUNCTION_THROWS (method);
6355 mthrows; mthrows = TREE_CHAIN (mthrows))
6357 if (!inherits_from_p (TREE_VALUE (mthrows), throwable_type_node))
6359 (TREE_PURPOSE (mthrows), "Class `%s' in `throws' clause must be a subclass of class `java.lang.Throwable'",
6361 (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))));
6364 /* If we see one constructor a mark so we don't generate the
6365 default one. Also skip other verifications: constructors
6366 can't be inherited hence hidden or overridden. */
6367 if (DECL_CONSTRUCTOR_P (method))
6369 saw_constructor = 1;
6373 sig = build_java_argument_signature (TREE_TYPE (method));
6374 found = lookup_argument_method_generic (class, DECL_NAME (method), sig,
6375 SEARCH_SUPER | SEARCH_INTERFACE);
6377 /* Inner class can't declare static methods */
6378 if (METHOD_STATIC (method) && !TOPLEVEL_CLASS_DECL_P (class_decl))
6380 char *t = xstrdup (lang_printable_name (class, 0));
6382 (method_wfl, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
6383 lang_printable_name (method, 2), t);
6387 /* Nothing overrides or it's a private method. */
6390 if (METHOD_PRIVATE (found))
6396 /* If `found' is declared in an interface, make sure the
6397 modifier matches. */
6398 if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found)))
6399 && clinit_identifier_node != DECL_NAME (found)
6400 && !METHOD_PUBLIC (method))
6402 tree found_decl = TYPE_NAME (DECL_CONTEXT (found));
6403 parse_error_context (method_wfl, "Class `%s' must override `%s' with a public method in order to implement interface `%s'",
6404 IDENTIFIER_POINTER (DECL_NAME (class_decl)),
6405 lang_printable_name (method, 2),
6406 IDENTIFIER_POINTER (DECL_NAME (found_decl)));
6409 /* Can't override a method with the same name and different return
6411 if (TREE_TYPE (TREE_TYPE (found)) != TREE_TYPE (TREE_TYPE (method)))
6414 (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 2));
6417 "Method `%s' was defined with return type `%s' in class `%s'",
6418 lang_printable_name (found, 2), t,
6420 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6424 aflags = get_access_flags_from_decl (found);
6426 /* Can't override final. Can't override static. */
6427 if (METHOD_FINAL (found) || METHOD_STATIC (found))
6429 /* Static *can* override static */
6430 if (METHOD_STATIC (found) && METHOD_STATIC (method))
6434 "%s methods can't be overridden. Method `%s' is %s in class `%s'",
6435 (METHOD_FINAL (found) ? "Final" : "Static"),
6436 lang_printable_name (found, 2),
6437 (METHOD_FINAL (found) ? "final" : "static"),
6439 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6443 /* Static method can't override instance method. */
6444 if (METHOD_STATIC (method))
6448 "Instance methods can't be overridden by a static method. Method `%s' is an instance method in class `%s'",
6449 lang_printable_name (found, 2),
6451 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6455 /* - Overriding/hiding public must be public
6456 - Overriding/hiding protected must be protected or public
6457 - If the overridden or hidden method has default (package)
6458 access, then the overriding or hiding method must not be
6459 private; otherwise, a compile-time error occurs. If
6460 `found' belongs to an interface, things have been already
6462 if (!CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found)))
6463 && ((METHOD_PUBLIC (found) && !METHOD_PUBLIC (method))
6464 || (METHOD_PROTECTED (found)
6465 && !(METHOD_PUBLIC (method) || METHOD_PROTECTED (method)))
6466 || (!(aflags & (ACC_PUBLIC | ACC_PRIVATE | ACC_STATIC))
6467 && METHOD_PRIVATE (method))))
6471 "Methods can't be overridden to be more private. Method `%s' is not %s in class `%s'", lang_printable_name (method, 2),
6472 (METHOD_PUBLIC (method) ? "public" :
6473 (METHOD_PRIVATE (method) ? "private" : "protected")),
6474 IDENTIFIER_POINTER (DECL_NAME
6475 (TYPE_NAME (DECL_CONTEXT (found)))));
6479 /* Check this method against all the other implementations it
6480 overrides. Here we only check the class hierarchy; the rest
6481 of the checking is done later. If this method is just a
6482 Miranda method, we can skip the check. */
6483 if (! METHOD_INVISIBLE (method))
6484 check_concrete_throws_clauses (class, method, DECL_NAME (method), sig);
6487 /* The above throws clause check only looked at superclasses. Now
6488 we must also make sure that all methods declared in interfaces
6489 have compatible throws clauses. FIXME: there are more efficient
6490 ways to organize this checking; we should implement one. */
6491 check_interface_throws_clauses (class, class);
6493 if (!TYPE_NVIRTUALS (class))
6494 TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));
6496 /* Search for inherited abstract method not yet implemented in this
6498 java_check_abstract_method_definitions (class_decl);
6500 if (!saw_constructor)
6504 /* Check to make sure that all the methods in all the interfaces
6505 implemented by CLASS_DECL are compatible with the concrete
6506 implementations available in CHECK_CLASS_DECL. */
6508 check_interface_throws_clauses (tree check_class_decl, tree class_decl)
6510 for (; class_decl != NULL_TREE; class_decl = CLASSTYPE_SUPER (class_decl))
6514 if (! CLASS_LOADED_P (class_decl))
6516 if (CLASS_FROM_SOURCE_P (class_decl))
6517 safe_layout_class (class_decl);
6519 load_class (class_decl, 1);
6522 for (i = BINFO_N_BASE_BINFOS (TYPE_BINFO (class_decl)) - 1; i > 0; --i)
6525 = BINFO_TYPE (BINFO_BASE_BINFO (TYPE_BINFO (class_decl), i));
6528 for (iface_method = TYPE_METHODS (interface);
6529 iface_method != NULL_TREE;
6530 iface_method = TREE_CHAIN (iface_method))
6534 /* First look for a concrete method implemented or
6535 inherited by this class. No need to search
6536 interfaces here, since we're already looking through
6538 sig = build_java_argument_signature (TREE_TYPE (iface_method));
6540 = lookup_argument_method_generic (check_class_decl,
6541 DECL_NAME (iface_method),
6542 sig, SEARCH_VISIBLE);
6543 /* If we don't find an implementation, that is ok. Any
6544 potential errors from that are diagnosed elsewhere.
6545 Also, multiple inheritance with conflicting throws
6546 clauses is fine in the absence of a concrete
6548 if (method != NULL_TREE && !METHOD_ABSTRACT (method)
6549 && !METHOD_INVISIBLE (iface_method))
6551 tree method_wfl = DECL_FUNCTION_WFL (method);
6552 check_throws_clauses (method, method_wfl, iface_method);
6556 /* Now check superinterfaces. */
6557 check_interface_throws_clauses (check_class_decl, interface);
6562 /* Check throws clauses of a method against the clauses of all the
6563 methods it overrides. We do this by searching up the class
6564 hierarchy, examining all matching accessible methods. */
6566 check_concrete_throws_clauses (tree class, tree self_method,
6567 tree name, tree signature)
6569 tree method = lookup_argument_method_generic (class, name, signature,
6570 SEARCH_SUPER | SEARCH_VISIBLE);
6571 while (method != NULL_TREE)
6573 if (! METHOD_INVISIBLE (method) && hack_is_accessible_p (method, class))
6574 check_throws_clauses (self_method, DECL_FUNCTION_WFL (self_method),
6577 method = lookup_argument_method_generic (DECL_CONTEXT (method),
6579 SEARCH_SUPER | SEARCH_VISIBLE);
6583 /* Generate an error if the `throws' clause of METHOD (if any) is
6584 incompatible with the `throws' clause of FOUND (if any). */
6586 check_throws_clauses (tree method, tree method_wfl, tree found)
6590 /* Can't check these things with class loaded from bytecode. FIXME */
6591 if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (found)))
6594 for (mthrows = DECL_FUNCTION_THROWS (method);
6595 mthrows; mthrows = TREE_CHAIN (mthrows))
6599 /* We don't verify unchecked expressions */
6600 if (IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (mthrows)))
6602 /* Checked expression must be compatible */
6603 for (fthrows = DECL_FUNCTION_THROWS (found);
6604 fthrows; fthrows = TREE_CHAIN (fthrows))
6606 if (inherits_from_p (TREE_VALUE (mthrows), TREE_VALUE (fthrows)))
6612 (method_wfl, "Invalid checked exception class `%s' in `throws' clause. The exception must be a subclass of an exception thrown by `%s' from class `%s'",
6613 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))),
6614 lang_printable_name (found, 2),
6616 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6621 /* Check abstract method of interface INTERFACE */
6623 java_check_abstract_methods (tree interface_decl)
6627 tree interface = TREE_TYPE (interface_decl);
6630 for (method = TYPE_METHODS (interface); method; method = TREE_CHAIN (method))
6632 /* 2- Check for double definition inside the defining interface */
6633 if (check_method_redefinition (interface, method))
6636 /* 3- Overriding is OK as far as we preserve the return type. */
6637 found = lookup_java_interface_method2 (interface, method);
6641 t = xstrdup (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 2));
6643 (DECL_FUNCTION_WFL (found),
6644 "Method `%s' was defined with return type `%s' in class `%s'",
6645 lang_printable_name (found, 2), t,
6647 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6653 /* 4- Inherited methods can't differ by their returned types */
6654 for (i = 0; BINFO_BASE_ITERATE (TYPE_BINFO (interface), i, base_binfo); i++)
6656 tree sub_interface_method, sub_interface;
6658 sub_interface = BINFO_TYPE (base_binfo);
6659 for (sub_interface_method = TYPE_METHODS (sub_interface);
6660 sub_interface_method;
6661 sub_interface_method = TREE_CHAIN (sub_interface_method))
6663 found = lookup_java_interface_method2 (interface,
6664 sub_interface_method);
6665 if (found && (found != sub_interface_method))
6668 (lookup_cl (sub_interface_method),
6669 "Interface `%s' inherits method `%s' from interface `%s'. This method is redefined with a different return type in interface `%s'",
6670 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (interface))),
6671 lang_printable_name (found, 2),
6673 (DECL_NAME (TYPE_NAME
6674 (DECL_CONTEXT (sub_interface_method)))),
6676 (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
6682 /* Lookup methods in interfaces using their name and partial
6683 signature. Return a matching method only if their types differ. */
6686 lookup_java_interface_method2 (tree class, tree method_decl)
6692 for (i = 0; BINFO_BASE_ITERATE (TYPE_BINFO (class), i, base_binfo); i++)
6694 if ((BINFO_TYPE (base_binfo) != object_type_node)
6696 lookup_java_method2 (BINFO_TYPE (base_binfo), method_decl, 1)))
6699 for (i = 0; BINFO_BASE_ITERATE (TYPE_BINFO (class), i, base_binfo); i++)
6701 to_return = lookup_java_interface_method2
6702 (BINFO_TYPE (base_binfo), method_decl);
6710 /* Lookup method using their name and partial signature. Return a
6711 matching method only if their types differ. */
6714 lookup_java_method2 (tree clas, tree method_decl, int do_interface)
6716 tree method, method_signature, method_name, method_type, name;
6718 method_signature = build_java_argument_signature (TREE_TYPE (method_decl));
6719 name = DECL_NAME (method_decl);
6720 method_name = (TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ?
6721 EXPR_WFL_NODE (name) : name);
6722 method_type = TREE_TYPE (TREE_TYPE (method_decl));
6724 while (clas != NULL_TREE)
6726 for (method = TYPE_METHODS (clas);
6727 method != NULL_TREE; method = TREE_CHAIN (method))
6729 tree method_sig = build_java_argument_signature (TREE_TYPE (method));
6730 tree name = DECL_NAME (method);
6731 if ((TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ?
6732 EXPR_WFL_NODE (name) : name) == method_name
6733 && method_sig == method_signature
6734 && TREE_TYPE (TREE_TYPE (method)) != method_type)
6737 clas = (do_interface ? NULL_TREE : CLASSTYPE_SUPER (clas));
6742 /* Return the line that matches DECL line number, and try its best to
6743 position the column number. Used during error reports. */
6745 static GTY(()) tree cl_v;
6747 lookup_cl (tree decl)
6754 if (cl_v == NULL_TREE)
6756 cl_v = build_expr_wfl (NULL_TREE, NULL, 0, 0);
6759 EXPR_WFL_FILENAME_NODE (cl_v) = get_identifier (DECL_SOURCE_FILE (decl));
6760 EXPR_WFL_SET_LINECOL (cl_v, DECL_SOURCE_LINE (decl), -1);
6762 line = java_get_line_col (EXPR_WFL_FILENAME (cl_v),
6763 EXPR_WFL_LINENO (cl_v), EXPR_WFL_COLNO (cl_v));
6765 found = strstr ((const char *)line,
6766 (const char *)IDENTIFIER_POINTER (DECL_NAME (decl)));
6768 EXPR_WFL_SET_LINECOL (cl_v, EXPR_WFL_LINENO (cl_v), found - line);
6773 /* Look for a simple name in the single-type import list */
6776 find_name_in_single_imports (tree name)
6780 for (node = ctxp->import_list; node; node = TREE_CHAIN (node))
6781 if (TREE_VALUE (node) == name)
6782 return (EXPR_WFL_NODE (TREE_PURPOSE (node)));
6787 /* Process all single-type import. */
6790 process_imports (void)
6795 for (import = ctxp->import_list; import; import = TREE_CHAIN (import))
6797 tree to_be_found = EXPR_WFL_NODE (TREE_PURPOSE (import));
6798 char *original_name;
6800 original_name = xmemdup (IDENTIFIER_POINTER (to_be_found),
6801 IDENTIFIER_LENGTH (to_be_found),
6802 IDENTIFIER_LENGTH (to_be_found) + 1);
6804 /* Don't load twice something already defined. */
6805 if (IDENTIFIER_CLASS_VALUE (to_be_found))
6812 QUALIFIED_P (to_be_found) = 1;
6813 load_class (to_be_found, 0);
6815 check_pkg_class_access (to_be_found, TREE_PURPOSE (import), true, NULL_TREE);
6817 /* We found it, we can bail out */
6818 if (IDENTIFIER_CLASS_VALUE (to_be_found))
6820 check_deprecation (TREE_PURPOSE (import),
6821 IDENTIFIER_CLASS_VALUE (to_be_found));
6825 /* We haven't found it. Maybe we're trying to access an
6826 inner class. The only way for us to know is to try again
6827 after having dropped a qualifier. If we can't break it further,
6828 we have an error. */
6829 if (split_qualified_name (&left, NULL, to_be_found))
6834 if (!IDENTIFIER_CLASS_VALUE (to_be_found))
6836 parse_error_context (TREE_PURPOSE (import),
6837 "Class or interface `%s' not found in import",
6842 free (original_name);
6849 /* Possibly find and mark a class imported by a single-type import
6853 find_in_imports (tree enclosing_type, tree class_type)
6855 tree import = (enclosing_type ? TYPE_IMPORT_LIST (enclosing_type) :
6859 if (TREE_VALUE (import) == TYPE_NAME (class_type))
6861 TYPE_NAME (class_type) = EXPR_WFL_NODE (TREE_PURPOSE (import));
6862 QUALIFIED_P (TYPE_NAME (class_type)) = 1;
6865 import = TREE_CHAIN (import);
6870 note_possible_classname (const char *name, int len)
6873 if (len > 5 && strncmp (&name [len-5], ".java", 5) == 0)
6875 else if (len > 6 && strncmp (&name [len-6], ".class", 6) == 0)
6879 node = ident_subst (name, len, "", '/', '.', "");
6880 IS_A_CLASSFILE_NAME (node) = 1; /* Or soon to be */
6881 QUALIFIED_P (node) = strchr (name, '/') ? 1 : 0;
6885 /* Read a import directory, gathering potential match for further type
6886 references. Indifferently reads a filesystem or a ZIP archive
6890 read_import_dir (tree wfl)
6892 tree package_id = EXPR_WFL_NODE (wfl);
6893 const char *package_name = IDENTIFIER_POINTER (package_id);
6894 int package_length = IDENTIFIER_LENGTH (package_id);
6896 JCF *saved_jcf = current_jcf;
6901 struct buffer filename[1];
6903 if (IS_AN_IMPORT_ON_DEMAND_P (package_id))
6905 IS_AN_IMPORT_ON_DEMAND_P (package_id) = 1;
6907 BUFFER_INIT (filename);
6908 buffer_grow (filename, package_length + 100);
6910 for (entry = jcf_path_start (); entry != NULL; entry = jcf_path_next (entry))
6912 const char *entry_name = jcf_path_name (entry);
6913 int entry_length = strlen (entry_name);
6914 if (jcf_path_is_zipfile (entry))
6917 buffer_grow (filename, entry_length);
6918 memcpy (filename->data, entry_name, entry_length - 1);
6919 filename->data[entry_length-1] = '\0';
6920 zipf = opendir_in_zip ((const char *) filename->data, jcf_path_is_system (entry));
6922 error ("malformed .zip archive in CLASSPATH: %s", entry_name);
6925 ZipDirectory *zipd = (ZipDirectory *) zipf->central_directory;
6926 BUFFER_RESET (filename);
6927 for (k = 0; k < package_length; k++)
6929 char ch = package_name[k];
6930 *filename->ptr++ = ch == '.' ? '/' : ch;
6932 *filename->ptr++ = '/';
6934 for (k = 0; k < zipf->count; k++, zipd = ZIPDIR_NEXT (zipd))
6936 const char *current_entry = ZIPDIR_FILENAME (zipd);
6937 int current_entry_len = zipd->filename_length;
6939 if (current_entry_len >= BUFFER_LENGTH (filename)
6940 && strncmp ((const char *) filename->data, current_entry,
6941 BUFFER_LENGTH (filename)) != 0)
6943 found |= note_possible_classname (current_entry,
6950 BUFFER_RESET (filename);
6951 buffer_grow (filename, entry_length + package_length + 4);
6952 strcpy ((char *) filename->data, entry_name);
6953 filename->ptr = filename->data + entry_length;
6954 for (k = 0; k < package_length; k++)
6956 char ch = package_name[k];
6957 *filename->ptr++ = ch == '.' ? '/' : ch;
6959 *filename->ptr = '\0';
6961 dirp = opendir ((const char *) filename->data);
6964 *filename->ptr++ = '/';
6969 struct dirent *direntp = readdir (dirp);
6972 d_name = direntp->d_name;
6973 len = strlen (direntp->d_name);
6974 buffer_grow (filename, len+1);
6975 strcpy ((char *) filename->ptr, d_name);
6976 found |= note_possible_classname ((const char *) filename->data + entry_length,
6977 package_length+len+1);
6984 free (filename->data);
6986 /* Here we should have a unified way of retrieving an entry, to be
6990 static int first = 1;
6993 error ("Can't find default package `%s'. Check the CLASSPATH environment variable and the access to the archives", package_name);
6998 parse_error_context (wfl, "Package `%s' not found in import",
7000 current_jcf = saved_jcf;
7003 current_jcf = saved_jcf;
7006 /* Possibly find a type in the import on demands specified
7007 types. Returns 1 if an error occurred, 0 otherwise. Run through the
7008 entire list, to detected potential double definitions. */
7011 find_in_imports_on_demand (tree enclosing_type, tree class_type)
7013 tree class_type_name = TYPE_NAME (class_type);
7014 tree import = (enclosing_type ? TYPE_IMPORT_DEMAND_LIST (enclosing_type) :
7015 ctxp->import_demand_list);
7016 tree cl = NULL_TREE;
7017 int seen_once = -1; /* -1 when not set, 1 if seen once, >1 otherwise. */
7018 int to_return = -1; /* -1 when not set, 0 or 1 otherwise */
7021 for (; import; import = TREE_CHAIN (import))
7023 int saved_lineno = input_line;
7025 const char *id_name;
7026 tree decl, type_name_copy;
7028 obstack_grow (&temporary_obstack,
7029 IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import))),
7030 IDENTIFIER_LENGTH (EXPR_WFL_NODE (TREE_PURPOSE (import))));
7031 obstack_1grow (&temporary_obstack, '.');
7032 obstack_grow0 (&temporary_obstack,
7033 IDENTIFIER_POINTER (class_type_name),
7034 IDENTIFIER_LENGTH (class_type_name));
7035 id_name = obstack_finish (&temporary_obstack);
7037 if (! (node = maybe_get_identifier (id_name)))
7040 /* Setup input_line so that it refers to the line of the import (in
7041 case we parse a class file and encounter errors */
7042 input_line = EXPR_WFL_LINENO (TREE_PURPOSE (import));
7044 type_name_copy = TYPE_NAME (class_type);
7045 TYPE_NAME (class_type) = node;
7046 QUALIFIED_P (node) = 1;
7047 decl = IDENTIFIER_CLASS_VALUE (node);
7049 /* If there is no DECL set for the class or if the class isn't
7050 loaded and not seen in source yet, then load */
7051 if (!decl || ! CLASS_LOADED_P (TREE_TYPE (decl)))
7053 load_class (node, 0);
7054 decl = IDENTIFIER_CLASS_VALUE (node);
7056 if (decl && ! INNER_CLASS_P (TREE_TYPE (decl)))
7057 access_check = check_pkg_class_access (node, TREE_PURPOSE (import),
7060 /* 6.6.1: Inner classes are subject to member access rules. */
7063 input_line = saved_lineno;
7065 /* If the loaded class is not accessible or couldn't be loaded,
7066 we restore the original TYPE_NAME and process the next
7068 if (access_check || !decl)
7070 TYPE_NAME (class_type) = type_name_copy;
7074 /* If the loaded class is accessible, we keep a tab on it to
7075 detect and report multiple inclusions. */
7076 if (IS_A_CLASSFILE_NAME (node))
7080 cl = TREE_PURPOSE (import);
7083 else if (seen_once >= 0)
7085 tree location = (cl ? cl : TREE_PURPOSE (import));
7086 tree package = (cl ? EXPR_WFL_NODE (cl) :
7087 EXPR_WFL_NODE (TREE_PURPOSE (import)));
7091 "Type `%s' also potentially defined in package `%s'",
7092 IDENTIFIER_POINTER (TYPE_NAME (class_type)),
7093 IDENTIFIER_POINTER (package));
7096 to_return = access_check;
7102 return (seen_once < 0 ? 0 : seen_once); /* It's ok not to have found */
7105 /* Add package NAME to the list of packages encountered so far. To
7106 speed up class lookup in do_resolve_class, we make sure a
7107 particular package is added only once. */
7110 register_package (tree name)
7116 pht = htab_create (50, htab_hash_pointer, htab_eq_pointer, NULL);
7118 e = htab_find_slot (pht, name, INSERT);
7121 package_list = chainon (package_list, build_tree_list (name, NULL));
7127 resolve_package (tree pkg, tree *next, tree *type_name)
7130 tree decl = NULL_TREE;
7131 *type_name = NULL_TREE;
7133 /* The trick is to determine when the package name stops and were
7134 the name of something contained in the package starts. Then we
7135 return a fully qualified name of what we want to get. */
7137 *next = EXPR_WFL_QUALIFICATION (pkg);
7139 /* Try to progressively construct a type name */
7140 if (TREE_CODE (pkg) == EXPR_WITH_FILE_LOCATION)
7141 for (current = EXPR_WFL_QUALIFICATION (pkg);
7142 current; current = TREE_CHAIN (current))
7144 /* If we don't have what we're expecting, exit now. TYPE_NAME
7145 will be null and the error caught later. */
7146 if (TREE_CODE (QUAL_WFL (current)) != EXPR_WITH_FILE_LOCATION)
7149 merge_qualified_name (*type_name, EXPR_WFL_NODE (QUAL_WFL (current)));
7150 if ((decl = resolve_no_layout (*type_name, NULL_TREE)))
7152 /* resolve_package should be used in a loop, hence we
7153 point at this one to naturally process the next one at
7154 the next iteration. */
7163 /* Check accessibility of inner classes according to member access rules.
7164 DECL is the inner class, ENCLOSING_DECL is the class from which the
7165 access is being attempted. */
7168 check_inner_class_access (tree decl, tree enclosing_decl, tree cl)
7171 tree enclosing_decl_type;
7173 /* We don't issue an error message when CL is null. CL can be null
7174 as a result of processing a JDEP crafted by source_start_java_method
7175 for the purpose of patching its parm decl. But the error would
7176 have been already trapped when fixing the method's signature.
7177 DECL can also be NULL in case of earlier errors. */
7181 enclosing_decl_type = TREE_TYPE (enclosing_decl);
7183 if (CLASS_PRIVATE (decl))
7185 /* Access is permitted only within the body of the top-level
7186 class in which DECL is declared. */
7187 tree top_level = decl;
7188 while (DECL_CONTEXT (top_level))
7189 top_level = DECL_CONTEXT (top_level);
7190 while (DECL_CONTEXT (enclosing_decl))
7191 enclosing_decl = DECL_CONTEXT (enclosing_decl);
7192 if (top_level == enclosing_decl)
7196 else if (CLASS_PROTECTED (decl))
7199 /* Access is permitted from within the same package... */
7200 if (in_same_package (decl, enclosing_decl))
7203 /* ... or from within the body of a subtype of the context in which
7204 DECL is declared. */
7205 decl_context = DECL_CONTEXT (decl);
7206 while (enclosing_decl)
7208 if (CLASS_INTERFACE (decl))
7210 if (interface_of_p (TREE_TYPE (decl_context),
7211 enclosing_decl_type))
7216 /* Eww. The order of the arguments is different!! */
7217 if (inherits_from_p (enclosing_decl_type,
7218 TREE_TYPE (decl_context)))
7221 enclosing_decl = DECL_CONTEXT (enclosing_decl);
7223 access = "protected";
7225 else if (! CLASS_PUBLIC (decl))
7227 /* Access is permitted only from within the same package as DECL. */
7228 if (in_same_package (decl, enclosing_decl))
7230 access = "non-public";
7233 /* Class is public. */
7236 parse_error_context (cl, "Nested %s %s is %s; cannot be accessed from here",
7237 (CLASS_INTERFACE (decl) ? "interface" : "class"),
7238 lang_printable_name (decl, 2), access);
7241 /* Accessibility check for top-level classes. If CLASS_NAME is in a
7242 foreign package, it must be PUBLIC. Return 0 if no access
7243 violations were found, 1 otherwise. If VERBOSE is true and an error
7244 was found, it is reported and accounted for. If CL is NULL then
7245 look it up with THIS_DECL. */
7248 check_pkg_class_access (tree class_name, tree cl, bool verbose, tree this_decl)
7252 if (!IDENTIFIER_CLASS_VALUE (class_name))
7255 if (!(type = TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_name))))
7258 if (!CLASS_PUBLIC (TYPE_NAME (type)))
7260 /* Access to a private class within the same package is
7263 split_qualified_name (&l, &r, class_name);
7264 if (!QUALIFIED_P (class_name) && !ctxp->package)
7265 /* Both in the empty package. */
7267 if (l == ctxp->package)
7268 /* Both in the same package. */
7273 (cl == NULL ? lookup_cl (this_decl): cl,
7274 "Can't access %s `%s'. Only public classes and interfaces in other packages can be accessed",
7275 (CLASS_INTERFACE (TYPE_NAME (type)) ? "interface" : "class"),
7276 IDENTIFIER_POINTER (class_name));
7282 /* Local variable declaration. */
7285 declare_local_variables (int modifier, tree type, tree vlist)
7287 tree decl, current, saved_type;
7288 tree type_wfl = NULL_TREE;
7292 /* Push a new block if statements were seen between the last time we
7293 pushed a block and now. Keep a count of blocks to close */
7294 if (BLOCK_EXPR_BODY (GET_CURRENT_BLOCK (current_function_decl)))
7296 tree b = enter_block ();
7297 BLOCK_IS_IMPLICIT (b) = 1;
7303 for (i = 0; i < ARRAY_SIZE (ctxp->modifier_ctx); i++)
7304 if (1 << i & modifier)
7306 if (modifier == ACC_FINAL)
7311 (ctxp->modifier_ctx [i],
7312 "Only `final' is allowed as a local variables modifier");
7317 /* Obtain an incomplete type if TYPE is not complete. TYPE_WFL will
7318 hold the TYPE value if a new incomplete has to be created (as
7319 opposed to being found already existing and reused). */
7320 SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);
7322 /* If TYPE is fully resolved and we don't have a reference, make one */
7323 PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
7325 /* Go through all the declared variables */
7326 for (current = vlist, saved_type = type; current;
7327 current = TREE_CHAIN (current), type = saved_type)
7329 tree other, real_type;
7330 tree wfl = TREE_PURPOSE (current);
7331 tree name = EXPR_WFL_NODE (wfl);
7332 tree init = TREE_VALUE (current);
7334 /* Process NAME, as it may specify extra dimension(s) for it */
7335 type = build_array_from_name (type, type_wfl, name, &name);
7337 /* Variable redefinition check */
7338 if ((other = lookup_name_in_blocks (name)))
7340 variable_redefinition_error (wfl, name, TREE_TYPE (other),
7341 DECL_SOURCE_LINE (other));
7345 /* Type adjustment. We may have just readjusted TYPE because
7346 the variable specified more dimensions. Make sure we have
7347 a reference if we can and don't have one already. */
7348 PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
7350 real_type = GET_REAL_TYPE (type);
7351 /* Never layout this decl. This will be done when its scope
7353 decl = build_decl (VAR_DECL, name, real_type);
7354 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
7355 DECL_FINAL (decl) = final_p;
7356 BLOCK_CHAIN_DECL (decl);
7358 /* If doing xreferencing, replace the line number with the WFL
7361 DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (wfl);
7363 /* Don't try to use an INIT statement when an error was found */
7364 if (init && java_error_count)
7367 /* Remember it if this is an initialized-upon-declaration final
7369 if (init && final_p)
7371 DECL_LOCAL_FINAL_IUD (decl) = 1;
7374 /* Add the initialization function to the current function's code */
7377 /* Name might have been readjusted */
7378 EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = name;
7379 MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
7380 java_method_add_stmt (current_function_decl,
7381 build_debugable_stmt (EXPR_WFL_LINECOL (init),
7385 /* Setup dependency the type of the decl */
7389 register_incomplete_type (JDEP_VARIABLE, type_wfl, decl, type);
7390 dep = CLASSD_LAST (ctxp->classd_list);
7391 JDEP_GET_PATCH (dep) = &TREE_TYPE (decl);
7394 SOURCE_FRONTEND_DEBUG (("Defined locals"));
7397 /* Called during parsing. Build decls from argument list. */
7400 source_start_java_method (tree fndecl)
7409 current_function_decl = fndecl;
7411 /* New scope for the function */
7413 for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0;
7414 tem != end_params_node; tem = TREE_CHAIN (tem), i++)
7416 tree type = TREE_VALUE (tem);
7417 tree name = TREE_PURPOSE (tem);
7419 /* If type is incomplete. Create an incomplete decl and ask for
7420 the decl to be patched later */
7421 if (INCOMPLETE_TYPE_P (type))
7424 tree real_type = GET_REAL_TYPE (type);
7425 parm_decl = build_decl (PARM_DECL, name, real_type);
7426 type = obtain_incomplete_type (type);
7427 register_incomplete_type (JDEP_PARM, NULL_TREE, NULL_TREE, type);
7428 jdep = CLASSD_LAST (ctxp->classd_list);
7429 JDEP_MISC (jdep) = name;
7430 JDEP_GET_PATCH (jdep) = &TREE_TYPE (parm_decl);
7433 parm_decl = build_decl (PARM_DECL, name, type);
7435 /* Remember if a local variable was declared final (via its
7436 TREE_LIST of type/name.) Set DECL_FINAL accordingly. */
7437 if (ARG_FINAL_P (tem))
7439 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (parm_decl);
7440 DECL_FINAL (parm_decl) = 1;
7443 BLOCK_CHAIN_DECL (parm_decl);
7445 tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
7446 BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)) =
7448 DECL_ARG_SLOT_COUNT (current_function_decl) = i;
7449 DECL_MAX_LOCALS (current_function_decl) = i;
7452 /* Called during parsing. Creates an artificial method declaration. */
7455 create_artificial_method (tree class, int flags, tree type,
7456 tree name, tree args)
7460 java_parser_context_save_global ();
7462 mdecl = make_node (FUNCTION_TYPE);
7463 TREE_TYPE (mdecl) = type;
7464 TYPE_ARG_TYPES (mdecl) = args;
7465 mdecl = add_method (class, flags, name, build_java_signature (mdecl));
7466 java_parser_context_restore_global ();
7467 DECL_ARTIFICIAL (mdecl) = 1;
7471 /* Starts the body if an artificial method. */
7474 start_artificial_method_body (tree mdecl)
7476 DECL_SOURCE_LINE (mdecl) = 1;
7477 DECL_FUNCTION_LAST_LINE (mdecl) = 1;
7478 source_start_java_method (mdecl);
7483 end_artificial_method_body (tree mdecl)
7485 /* exit_block modifies DECL_FUNCTION_BODY (current_function_decl).
7486 It has to be evaluated first. (if mdecl is current_function_decl,
7487 we have an undefined behavior if no temporary variable is used.) */
7488 tree b = exit_block ();
7489 BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = b;
7493 /* Dump a tree of some kind. This is a convenience wrapper for the
7494 dump_* functions in tree-dump.c. */
7496 dump_java_tree (enum tree_dump_index phase, tree t)
7501 stream = dump_begin (phase, &flags);
7505 dump_node (t, flags, stream);
7506 dump_end (phase, stream);
7510 /* Terminate a function and expand its body. */
7513 source_end_java_method (void)
7515 tree fndecl = current_function_decl;
7520 java_parser_context_save_global ();
7521 input_line = ctxp->last_ccb_indent1;
7523 /* Turn function bodies with only a NOP expr null, so they don't get
7524 generated at all and we won't get warnings when using the -W
7526 if (IS_EMPTY_STMT (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl))))
7527 BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) = NULL_TREE;
7529 if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl))
7530 && ! flag_emit_class_files
7531 && ! flag_emit_xref)
7532 finish_method (fndecl);
7534 current_function_decl = NULL_TREE;
7535 java_parser_context_restore_global ();
7536 current_function_decl = NULL_TREE;
7539 /* Record EXPR in the current function block. Complements compound
7540 expression second operand if necessary. */
7543 java_method_add_stmt (tree fndecl, tree expr)
7545 if (!GET_CURRENT_BLOCK (fndecl))
7547 return add_stmt_to_block (GET_CURRENT_BLOCK (fndecl), NULL_TREE, expr);
7551 add_stmt_to_block (tree b, tree type, tree stmt)
7553 tree body = BLOCK_EXPR_BODY (b), c;
7555 if (java_error_count)
7558 if ((c = add_stmt_to_compound (body, type, stmt)) == body)
7561 BLOCK_EXPR_BODY (b) = c;
7562 TREE_SIDE_EFFECTS (c) = 1;
7566 /* Lays out the methods for the classes seen so far. */
7569 java_layout_seen_class_methods (void)
7571 tree previous_list = all_class_list;
7572 tree end = NULL_TREE;
7577 for (current = previous_list;
7578 current != end; current = TREE_CHAIN (current))
7580 tree cls = TREE_TYPE (TREE_VALUE (current));
7582 if (! CLASS_LOADED_P (cls))
7583 load_class (cls, 0);
7585 layout_class_methods (cls);
7588 /* Note that new classes might have been added while laying out
7589 methods, changing the value of all_class_list. */
7591 if (previous_list != all_class_list)
7593 end = previous_list;
7594 previous_list = all_class_list;
7601 static GTY(()) tree stop_reordering;
7603 java_reorder_fields (void)
7607 for (current = gclass_list; current; current = TREE_CHAIN (current))
7609 output_class = current_class = TREE_TYPE (TREE_VALUE (current));
7611 if (current_class == stop_reordering)
7614 /* Reverse the fields, but leave the dummy field in front.
7615 Fields are already ordered for Object and Class */
7616 if (TYPE_FIELDS (current_class) && current_class != object_type_node
7617 && current_class != class_type_node)
7619 /* If the dummy field is there, reverse the right fields and
7620 just layout the type for proper fields offset */
7621 if (!DECL_NAME (TYPE_FIELDS (current_class)))
7623 tree fields = TYPE_FIELDS (current_class);
7624 TREE_CHAIN (fields) = nreverse (TREE_CHAIN (fields));
7625 TYPE_SIZE (current_class) = NULL_TREE;
7627 /* We don't have a dummy field, we need to layout the class,
7628 after having reversed the fields */
7631 TYPE_FIELDS (current_class) =
7632 nreverse (TYPE_FIELDS (current_class));
7633 TYPE_SIZE (current_class) = NULL_TREE;
7637 /* There are cases were gclass_list will be empty. */
7639 stop_reordering = TREE_TYPE (TREE_VALUE (gclass_list));
7642 /* Layout the methods of all classes loaded in one way or another.
7643 Check methods of source parsed classes. Then reorder the
7644 fields and layout the classes or the type of all source parsed
7648 java_layout_classes (void)
7651 int save_error_count = java_error_count;
7653 /* Layout the methods of all classes seen so far */
7654 java_layout_seen_class_methods ();
7655 java_parse_abort_on_error ();
7656 all_class_list = NULL_TREE;
7658 /* Then check the methods of all parsed classes */
7659 for (current = gclass_list; current; current = TREE_CHAIN (current))
7660 if (CLASS_FROM_SOURCE_P (TREE_TYPE (TREE_VALUE (current))))
7661 java_check_methods (TREE_VALUE (current));
7662 java_parse_abort_on_error ();
7664 for (current = gclass_list; current; current = TREE_CHAIN (current))
7666 output_class = current_class = TREE_TYPE (TREE_VALUE (current));
7667 layout_class (current_class);
7669 /* Error reported by the caller */
7670 if (java_error_count)
7674 /* We might have reloaded classes durign the process of laying out
7675 classes for code generation. We must layout the methods of those
7676 late additions, as constructor checks might use them */
7677 java_layout_seen_class_methods ();
7678 java_parse_abort_on_error ();
7681 /* Expand methods in the current set of classes remembered for
7685 java_complete_expand_classes (void)
7689 do_not_fold = flag_emit_xref;
7691 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
7692 if (!INNER_CLASS_DECL_P (current))
7693 java_complete_expand_class (current);
7696 /* Expand the methods found in OUTER, starting first by OUTER's inner
7700 java_complete_expand_class (tree outer)
7704 /* We need to go after all inner classes and start expanding them,
7705 starting with most nested ones. We have to do that because nested
7706 classes might add functions to outer classes */
7708 for (inner_list = DECL_INNER_CLASS_LIST (outer);
7709 inner_list; inner_list = TREE_CHAIN (inner_list))
7710 java_complete_expand_class (TREE_PURPOSE (inner_list));
7712 java_complete_expand_methods (outer);
7715 /* Expand methods registered in CLASS_DECL. The general idea is that
7716 we expand regular methods first. This allows us get an estimate on
7717 how outer context local alias fields are really used so we can add
7718 to the constructor just enough code to initialize them properly (it
7719 also lets us generate finit$ correctly.) Then we expand the
7720 constructors and then <clinit>. */
7723 java_complete_expand_methods (tree class_decl)
7725 tree clinit, decl, first_decl;
7727 output_class = current_class = TREE_TYPE (class_decl);
7729 /* Pre-expand <clinit> to figure whether we really need it or
7730 not. If we do need it, we pre-expand the static fields so they're
7731 ready to be used somewhere else. <clinit> will be fully expanded
7732 after we processed the constructors. */
7733 first_decl = TYPE_METHODS (current_class);
7734 clinit = maybe_generate_pre_expand_clinit (current_class);
7736 /* Then generate finit$ (if we need to) because constructors will
7738 if (TYPE_FINIT_STMT_LIST (current_class))
7739 java_complete_expand_method (generate_finit (current_class));
7741 /* Then generate instinit$ (if we need to) because constructors will
7743 if (TYPE_II_STMT_LIST (current_class))
7744 java_complete_expand_method (generate_instinit (current_class));
7746 /* Now do the constructors */
7747 for (decl = first_decl ; !java_error_count && decl; decl = TREE_CHAIN (decl))
7749 if (!DECL_CONSTRUCTOR_P (decl))
7751 java_complete_expand_method (decl);
7754 /* First, do the ordinary methods. */
7755 for (decl = first_decl; decl; decl = TREE_CHAIN (decl))
7757 /* Ctors aren't part of this batch. */
7758 if (DECL_CONSTRUCTOR_P (decl) || DECL_CLINIT_P (decl))
7761 /* Skip abstract or native methods -- but do handle native
7762 methods when generating JNI stubs. */
7763 if (METHOD_ABSTRACT (decl) || (! flag_jni && METHOD_NATIVE (decl)))
7765 DECL_FUNCTION_BODY (decl) = NULL_TREE;
7769 if (METHOD_NATIVE (decl))
7772 current_function_decl = decl;
7773 body = build_jni_stub (decl);
7774 BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (decl)) = body;
7777 java_complete_expand_method (decl);
7780 /* If there is indeed a <clinit>, fully expand it now */
7783 /* Prevent the use of `this' inside <clinit> */
7784 ctxp->explicit_constructor_p = 1;
7785 java_complete_expand_method (clinit);
7786 ctxp->explicit_constructor_p = 0;
7789 /* We might have generated a class$ that we now want to expand */
7790 if (TYPE_DOT_CLASS (current_class))
7791 java_complete_expand_method (TYPE_DOT_CLASS (current_class));
7793 /* Now verify constructor circularity (stop after the first one we
7795 if (!CLASS_INTERFACE (class_decl))
7796 for (decl = TYPE_METHODS (current_class); decl; decl = TREE_CHAIN (decl))
7797 if (DECL_CONSTRUCTOR_P (decl)
7798 && verify_constructor_circularity (decl, decl))
7802 /* Attempt to create <clinit>. Pre-expand static fields so they can be
7803 safely used in some other methods/constructors. */
7806 maybe_generate_pre_expand_clinit (tree class_type)
7808 tree current, mdecl;
7810 if (!TYPE_CLINIT_STMT_LIST (class_type))
7813 /* Go through all static fields and pre expand them */
7814 for (current = TYPE_FIELDS (class_type); current;
7815 current = TREE_CHAIN (current))
7816 if (FIELD_STATIC (current))
7817 build_field_ref (NULL_TREE, class_type, DECL_NAME (current));
7819 /* Then build the <clinit> method */
7820 mdecl = create_artificial_method (class_type, ACC_STATIC, void_type_node,
7821 clinit_identifier_node, end_params_node);
7822 layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
7824 start_artificial_method_body (mdecl);
7826 /* We process the list of assignment we produced as the result of
7827 the declaration of initialized static field and add them as
7828 statement to the <clinit> method. */
7829 for (current = TYPE_CLINIT_STMT_LIST (class_type); current;
7830 current = TREE_CHAIN (current))
7832 tree stmt = current;
7833 /* We build the assignment expression that will initialize the
7834 field to its value. There are strict rules on static
7835 initializers (8.5). FIXME */
7836 if (TREE_CODE (stmt) != BLOCK && !IS_EMPTY_STMT (stmt))
7837 stmt = build_debugable_stmt (EXPR_WFL_LINECOL (stmt), stmt);
7838 java_method_add_stmt (mdecl, stmt);
7841 end_artificial_method_body (mdecl);
7843 /* Now we want to place <clinit> as the last method (because we need
7844 it at least for interface so that it doesn't interfere with the
7845 dispatch table based lookup. */
7846 if (TREE_CHAIN (TYPE_METHODS (class_type)))
7848 current = TREE_CHAIN (TYPE_METHODS (class_type));
7849 TYPE_METHODS (class_type) = current;
7851 while (TREE_CHAIN (current))
7852 current = TREE_CHAIN (current);
7854 TREE_CHAIN (current) = mdecl;
7855 TREE_CHAIN (mdecl) = NULL_TREE;
7861 /* Analyzes a method body and look for something that isn't a
7862 MODIFY_EXPR with a constant value. */
7865 analyze_clinit_body (tree this_class, tree bbody)
7868 switch (TREE_CODE (bbody))
7871 bbody = BLOCK_EXPR_BODY (bbody);
7874 case EXPR_WITH_FILE_LOCATION:
7875 bbody = EXPR_WFL_NODE (bbody);
7879 if (analyze_clinit_body (this_class, TREE_OPERAND (bbody, 0)))
7881 bbody = TREE_OPERAND (bbody, 1);
7885 /* If we're generating to class file and we're dealing with an
7886 array initialization, we return 1 to keep <clinit> */
7887 if (TREE_CODE (TREE_OPERAND (bbody, 1)) == NEW_ARRAY_INIT
7888 && flag_emit_class_files)
7891 /* There are a few cases where we're required to keep
7893 - If this is an assignment whose operand is not constant,
7894 - If this is an assignment to a non-initialized field,
7895 - If this field is not a member of the current class.
7897 return (! TREE_CONSTANT (TREE_OPERAND (bbody, 1))
7898 || ! DECL_INITIAL (TREE_OPERAND (bbody, 0))
7899 || DECL_CONTEXT (TREE_OPERAND (bbody, 0)) != this_class);
7908 /* See whether we could get rid of <clinit>. Criteria are: all static
7909 final fields have constant initial values and the body of <clinit>
7910 is empty. Return 1 if <clinit> was discarded, 0 otherwise. */
7913 maybe_yank_clinit (tree mdecl)
7918 if (!DECL_CLINIT_P (mdecl))
7921 /* If the body isn't empty, then we keep <clinit>. Note that if
7922 we're emitting classfiles, this isn't enough not to rule it
7924 fbody = DECL_FUNCTION_BODY (mdecl);
7925 bbody = BLOCK_EXPR_BODY (fbody);
7926 if (bbody && bbody != error_mark_node)
7927 bbody = BLOCK_EXPR_BODY (bbody);
7930 if (bbody && ! flag_emit_class_files && !IS_EMPTY_STMT (bbody))
7933 type = DECL_CONTEXT (mdecl);
7934 current = TYPE_FIELDS (type);
7936 for (current = (current ? TREE_CHAIN (current) : current);
7937 current; current = TREE_CHAIN (current))
7941 /* We're not interested in non-static fields. */
7942 if (!FIELD_STATIC (current))
7945 /* Nor in fields without initializers. */
7946 f_init = DECL_INITIAL (current);
7947 if (f_init == NULL_TREE)
7950 /* Anything that isn't String or a basic type is ruled out -- or
7951 if we know how to deal with it (when doing things natively) we
7952 should generated an empty <clinit> so that SUID are computed
7954 if (! JSTRING_TYPE_P (TREE_TYPE (current))
7955 && ! JNUMERIC_TYPE_P (TREE_TYPE (current)))
7958 if (! FIELD_FINAL (current) || ! TREE_CONSTANT (f_init))
7962 /* Now we analyze the method body and look for something that
7963 isn't a MODIFY_EXPR */
7964 if (!IS_EMPTY_STMT (bbody) && analyze_clinit_body (type, bbody))
7967 /* Get rid of <clinit> in the class' list of methods */
7968 if (TYPE_METHODS (type) == mdecl)
7969 TYPE_METHODS (type) = TREE_CHAIN (mdecl);
7971 for (current = TYPE_METHODS (type); current;
7972 current = TREE_CHAIN (current))
7973 if (TREE_CHAIN (current) == mdecl)
7975 TREE_CHAIN (current) = TREE_CHAIN (mdecl);
7982 /* Install the argument from MDECL. Suitable to completion and
7983 expansion of mdecl's body. */
7986 start_complete_expand_method (tree mdecl)
7990 pushlevel (1); /* Prepare for a parameter push */
7991 tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
7992 DECL_ARGUMENTS (mdecl) = tem;
7994 for (; tem; tem = TREE_CHAIN (tem))
7996 /* TREE_CHAIN (tem) will change after pushdecl. */
7997 tree next = TREE_CHAIN (tem);
7998 tree type = TREE_TYPE (tem);
7999 if (targetm.calls.promote_prototypes (type)
8000 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)
8001 && INTEGRAL_TYPE_P (type))
8002 type = integer_type_node;
8003 DECL_ARG_TYPE (tem) = type;
8004 layout_decl (tem, 0);
8006 /* Re-install the next so that the list is kept and the loop
8008 TREE_CHAIN (tem) = next;
8010 pushdecl_force_head (DECL_ARGUMENTS (mdecl));
8011 input_line = DECL_SOURCE_LINE (mdecl);
8012 build_result_decl (mdecl);
8016 /* Complete and expand a method. */
8019 java_complete_expand_method (tree mdecl)
8021 tree fbody, block_body, exception_copy;
8023 current_function_decl = mdecl;
8024 /* Fix constructors before expanding them */
8025 if (DECL_CONSTRUCTOR_P (mdecl))
8026 fix_constructors (mdecl);
8028 /* Expand functions that have a body */
8029 if (!DECL_FUNCTION_BODY (mdecl))
8032 fbody = DECL_FUNCTION_BODY (mdecl);
8033 block_body = BLOCK_EXPR_BODY (fbody);
8034 exception_copy = NULL_TREE;
8036 current_function_decl = mdecl;
8039 fprintf (stderr, " [%s.",
8040 lang_printable_name (DECL_CONTEXT (mdecl), 0));
8041 announce_function (mdecl);
8043 fprintf (stderr, "]");
8045 /* Prepare the function for tree completion */
8046 start_complete_expand_method (mdecl);
8048 /* Install the current this */
8049 current_this = (!METHOD_STATIC (mdecl) ?
8050 BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (mdecl)) : NULL_TREE);
8052 /* Purge the `throws' list of unchecked exceptions (we save a copy
8053 of the list and re-install it later.) */
8054 exception_copy = copy_list (DECL_FUNCTION_THROWS (mdecl));
8055 purge_unchecked_exceptions (mdecl);
8057 /* Install exceptions thrown with `throws' */
8058 PUSH_EXCEPTIONS (DECL_FUNCTION_THROWS (mdecl));
8060 if (block_body != NULL_TREE)
8062 block_body = java_complete_tree (block_body);
8064 /* Before we check initialization, attached all class initialization
8065 variable to the block_body */
8066 htab_traverse (DECL_FUNCTION_INIT_TEST_TABLE (mdecl),
8067 attach_init_test_initialization_flags, block_body);
8069 if (! flag_emit_xref && ! METHOD_NATIVE (mdecl))
8071 check_for_initialization (block_body, mdecl);
8073 /* Go through all the flags marking the initialization of
8074 static variables and see whether they're definitively
8075 assigned, in which case the type is remembered as
8076 definitively initialized in MDECL. */
8077 if (STATIC_CLASS_INIT_OPT_P ())
8079 /* Always register the context as properly initialized in
8080 MDECL. This used with caution helps removing extra
8081 initialization of self. */
8082 if (METHOD_STATIC (mdecl))
8085 (DECL_FUNCTION_INITIALIZED_CLASS_TABLE (mdecl),
8086 DECL_CONTEXT (mdecl), INSERT)) = DECL_CONTEXT (mdecl);
8090 ctxp->explicit_constructor_p = 0;
8093 BLOCK_EXPR_BODY (fbody) = block_body;
8095 /* If we saw a return but couldn't evaluate it properly, we'll have
8096 an error_mark_node here. */
8097 if (block_body != error_mark_node
8098 && (block_body == NULL_TREE || CAN_COMPLETE_NORMALLY (block_body))
8099 && TREE_CODE (TREE_TYPE (TREE_TYPE (mdecl))) != VOID_TYPE
8101 missing_return_error (current_function_decl);
8103 /* See if we can get rid of <clinit> if MDECL happens to be <clinit> */
8104 maybe_yank_clinit (mdecl);
8106 /* Pop the current level, with special measures if we found errors. */
8107 if (java_error_count)
8108 pushdecl_force_head (DECL_ARGUMENTS (mdecl));
8111 /* Pop the exceptions and sanity check */
8113 if (currently_caught_type_list)
8116 /* Restore the copy of the list of exceptions if emitting xrefs. */
8117 DECL_FUNCTION_THROWS (mdecl) = exception_copy;
8120 /* For with each class for which there's code to generate. */
8123 java_expand_method_bodies (tree class)
8126 for (decl = TYPE_METHODS (class); decl; decl = TREE_CHAIN (decl))
8130 if (! DECL_FUNCTION_BODY (decl))
8133 current_function_decl = decl;
8135 block = BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (decl));
8137 /* Save the function body for gimplify and inlining. */
8138 DECL_SAVED_TREE (decl) = block;
8140 /* It's time to assign the variable flagging static class
8141 initialization based on which classes invoked static methods
8142 are definitely initializing. This should be flagged. */
8143 if (STATIC_CLASS_INIT_OPT_P ())
8145 tree list = DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (decl);
8146 for (; list != NULL_TREE; list = TREE_CHAIN (list))
8148 /* Executed for each statement calling a static function.
8149 LIST is a TREE_LIST whose PURPOSE is the called function
8150 and VALUE is a compound whose second operand can be patched
8151 with static class initialization flag assignments. */
8153 tree called_method = TREE_PURPOSE (list);
8154 tree compound = TREE_VALUE (list);
8155 tree assignment_compound_list
8156 = build_tree_list (called_method, NULL);
8158 /* For each class definitely initialized in
8159 CALLED_METHOD, fill ASSIGNMENT_COMPOUND with
8160 assignment to the class initialization flag. */
8161 htab_traverse (DECL_FUNCTION_INITIALIZED_CLASS_TABLE (called_method),
8162 emit_test_initialization,
8163 assignment_compound_list);
8165 if (TREE_VALUE (assignment_compound_list))
8166 TREE_OPERAND (compound, 1)
8167 = TREE_VALUE (assignment_compound_list);
8171 /* Expand the function body. */
8172 source_end_java_method ();
8178 /* This section of the code deals with accessing enclosing context
8179 fields either directly by using the relevant access to this$<n> or
8180 by invoking an access method crafted for that purpose. */
8182 /* Build the necessary access from an inner class to an outer
8183 class. This routine could be optimized to cache previous result
8184 (decl, current_class and returned access). When an access method
8185 needs to be generated, it always takes the form of a read. It might
8186 be later turned into a write by calling outer_field_access_fix. */
8189 build_outer_field_access (tree id, tree decl)
8191 tree access = NULL_TREE;
8192 tree ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));
8193 tree decl_ctx = DECL_CONTEXT (decl);
8195 /* If the immediate enclosing context of the current class is the
8196 field decl's class or inherits from it; build the access as
8197 `this$<n>.<field>'. Note that we will break the `private' barrier
8198 if we're not emitting bytecodes. */
8199 if ((ctx == decl_ctx || inherits_from_p (ctx, decl_ctx))
8200 && (!FIELD_PRIVATE (decl) || !flag_emit_class_files ))
8202 tree thisn = build_current_thisn (current_class);
8203 access = make_qualified_primary (build_wfl_node (thisn),
8204 id, EXPR_WFL_LINECOL (id));
8206 /* Otherwise, generate access methods to outer this and access the
8207 field (either using an access method or by direct access.) */
8210 int lc = EXPR_WFL_LINECOL (id);
8212 /* Now we chain the required number of calls to the access$0 to
8213 get a hold to the enclosing instance we need, and then we
8214 build the field access. */
8215 access = build_access_to_thisn (current_class, decl_ctx, lc);
8217 /* If the field is private and we're generating bytecode, then
8218 we generate an access method */
8219 if (FIELD_PRIVATE (decl) && flag_emit_class_files )
8221 tree name = build_outer_field_access_methods (decl);
8222 access = build_outer_field_access_expr (lc, decl_ctx,
8223 name, access, NULL_TREE);
8225 /* Otherwise we use `access$(this$<j>). ... access$(this$<i>).<field>'.
8226 Once again we break the `private' access rule from a foreign
8229 access = make_qualified_primary (access, id, lc);
8231 return resolve_expression_name (access, NULL);
8234 /* Return a nonzero value if NODE describes an outer field inner
8238 outer_field_access_p (tree type, tree decl)
8240 if (!INNER_CLASS_TYPE_P (type)
8241 || TREE_CODE (decl) != FIELD_DECL
8242 || DECL_CONTEXT (decl) == type)
8245 /* If the inner class extends the declaration context of the field
8246 we're trying to access, then this isn't an outer field access */
8247 if (inherits_from_p (type, DECL_CONTEXT (decl)))
8250 for (type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))); ;
8251 type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))))
8253 if (type == DECL_CONTEXT (decl))
8256 if (!DECL_CONTEXT (TYPE_NAME (type)))
8258 /* Before we give up, see whether the field is inherited from
8259 the enclosing context we're considering. */
8260 if (inherits_from_p (type, DECL_CONTEXT (decl)))
8269 /* Return a nonzero value if NODE represents an outer field inner
8270 access that was been already expanded. As a side effect, it returns
8271 the name of the field being accessed and the argument passed to the
8272 access function, suitable for a regeneration of the access method
8273 call if necessary. */
8276 outer_field_expanded_access_p (tree node, tree *name, tree *arg_type,
8281 if (TREE_CODE (node) != CALL_EXPR)
8284 /* Well, gcj generates slightly different tree nodes when compiling
8285 to native or bytecodes. It's the case for function calls. */
8287 if (flag_emit_class_files
8288 && TREE_CODE (node) == CALL_EXPR
8289 && OUTER_FIELD_ACCESS_IDENTIFIER_P (DECL_NAME (TREE_OPERAND (node, 0))))
8291 else if (!flag_emit_class_files)
8293 node = TREE_OPERAND (node, 0);
8295 if (node && TREE_OPERAND (node, 0)
8296 && TREE_CODE (TREE_OPERAND (node, 0)) == ADDR_EXPR)
8298 node = TREE_OPERAND (node, 0);
8299 if (TREE_OPERAND (node, 0)
8300 && TREE_CODE (TREE_OPERAND (node, 0)) == FUNCTION_DECL
8301 && (OUTER_FIELD_ACCESS_IDENTIFIER_P
8302 (DECL_NAME (TREE_OPERAND (node, 0)))))
8307 if (identified && name && arg_type && arg)
8309 tree argument = TREE_OPERAND (node, 1);
8310 *name = DECL_NAME (TREE_OPERAND (node, 0));
8311 *arg_type = TREE_TYPE (TREE_TYPE (TREE_VALUE (argument)));
8312 *arg = TREE_VALUE (argument);
8317 /* Detect in NODE an outer field read access from an inner class and
8318 transform it into a write with RHS as an argument. This function is
8319 called from the java_complete_lhs when an assignment to a LHS can
8323 outer_field_access_fix (tree wfl, tree node, tree rhs)
8325 tree name, arg_type, arg;
8327 if (outer_field_expanded_access_p (node, &name, &arg_type, &arg))
8329 node = build_outer_field_access_expr (EXPR_WFL_LINECOL (wfl),
8330 arg_type, name, arg, rhs);
8331 return java_complete_tree (node);
8336 /* Construct the expression that calls an access method:
8337 <type>.access$<n>(<arg1> [, <arg2>]);
8339 ARG2 can be NULL and will be omitted in that case. It will denote a
8343 build_outer_field_access_expr (int lc, tree type, tree access_method_name,
8344 tree arg1, tree arg2)
8346 tree args, cn, access;
8348 args = arg1 ? arg1 :
8349 build_wfl_node (build_current_thisn (current_class));
8350 args = build_tree_list (NULL_TREE, args);
8353 args = tree_cons (NULL_TREE, arg2, args);
8355 access = build_method_invocation (build_wfl_node (access_method_name), args);
8356 cn = build_wfl_node (DECL_NAME (TYPE_NAME (type)));
8357 return make_qualified_primary (cn, access, lc);
8361 build_new_access_id (void)
8363 static int access_n_counter = 1;
8366 sprintf (buffer, "access$%d", access_n_counter++);
8367 return get_identifier (buffer);
8370 /* Create the static access functions for the outer field DECL. We define a
8372 TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$) {
8376 TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$,
8377 TREE_TYPE (<field>) value$) {
8378 return inst$.field = value$;
8380 We should have a usage flags on the DECL so we can lazily turn the ones
8381 we're using for code generation. FIXME.
8385 build_outer_field_access_methods (tree decl)
8387 tree id, args, stmt, mdecl;
8389 if (FIELD_INNER_ACCESS_P (decl))
8390 return FIELD_INNER_ACCESS (decl);
8392 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
8394 /* Create the identifier and a function named after it. */
8395 id = build_new_access_id ();
8397 /* The identifier is marked as bearing the name of a generated write
8398 access function for outer field accessed from inner classes. */
8399 OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;
8401 /* Create the read access */
8402 args = build_tree_list (inst_id, build_pointer_type (DECL_CONTEXT (decl)));
8403 TREE_CHAIN (args) = end_params_node;
8404 stmt = make_qualified_primary (build_wfl_node (inst_id),
8405 build_wfl_node (DECL_NAME (decl)), 0);
8406 stmt = build_return (0, stmt);
8407 mdecl = build_outer_field_access_method (DECL_CONTEXT (decl),
8408 TREE_TYPE (decl), id, args, stmt);
8409 DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;
8411 /* Create the write access method. No write access for final variable */
8412 if (!FIELD_FINAL (decl))
8414 args = build_tree_list (inst_id,
8415 build_pointer_type (DECL_CONTEXT (decl)));
8416 TREE_CHAIN (args) = build_tree_list (wpv_id, TREE_TYPE (decl));
8417 TREE_CHAIN (TREE_CHAIN (args)) = end_params_node;
8418 stmt = make_qualified_primary (build_wfl_node (inst_id),
8419 build_wfl_node (DECL_NAME (decl)), 0);
8420 stmt = build_return (0, build_assignment (ASSIGN_TK, 0, stmt,
8421 build_wfl_node (wpv_id)));
8422 mdecl = build_outer_field_access_method (DECL_CONTEXT (decl),
8423 TREE_TYPE (decl), id,
8426 DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;
8428 /* Return the access name */
8429 return FIELD_INNER_ACCESS (decl) = id;
8432 /* Build an field access method NAME. */
8435 build_outer_field_access_method (tree class, tree type, tree name,
8436 tree args, tree body)
8438 tree saved_current_function_decl, mdecl;
8440 /* Create the method */
8441 mdecl = create_artificial_method (class, ACC_STATIC, type, name, args);
8442 fix_method_argument_names (args, mdecl);
8443 layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
8445 /* Attach the method body. */
8446 saved_current_function_decl = current_function_decl;
8447 start_artificial_method_body (mdecl);
8448 java_method_add_stmt (mdecl, body);
8449 end_artificial_method_body (mdecl);
8450 current_function_decl = saved_current_function_decl;
8456 /* This section deals with building access function necessary for
8457 certain kinds of method invocation from inner classes. */
8460 build_outer_method_access_method (tree decl)
8462 tree saved_current_function_decl, mdecl;
8463 tree args = NULL_TREE, call_args = NULL_TREE;
8464 tree carg, id, body, class;
8466 int parm_id_count = 0;
8468 /* Test this abort with an access to a private field */
8469 if (!strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), "access$"))
8472 /* Check the cache first */
8473 if (DECL_FUNCTION_INNER_ACCESS (decl))
8474 return DECL_FUNCTION_INNER_ACCESS (decl);
8476 class = DECL_CONTEXT (decl);
8478 /* Obtain an access identifier and mark it */
8479 id = build_new_access_id ();
8480 OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;
8482 carg = TYPE_ARG_TYPES (TREE_TYPE (decl));
8483 /* Create the arguments, as much as the original */
8484 for (; carg && carg != end_params_node;
8485 carg = TREE_CHAIN (carg))
8487 sprintf (buffer, "write_parm_value$%d", parm_id_count++);
8488 args = chainon (args, build_tree_list (get_identifier (buffer),
8489 TREE_VALUE (carg)));
8491 args = chainon (args, end_params_node);
8493 /* Create the method */
8494 mdecl = create_artificial_method (class, ACC_STATIC,
8495 TREE_TYPE (TREE_TYPE (decl)), id, args);
8496 layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
8497 /* There is a potential bug here. We should be able to use
8498 fix_method_argument_names, but then arg names get mixed up and
8499 eventually a constructor will have its this$0 altered and the
8500 outer context won't be assignment properly. The testcase is
8502 TYPE_ARG_TYPES (TREE_TYPE (mdecl)) = args;
8504 /* Attach the method body. */
8505 saved_current_function_decl = current_function_decl;
8506 start_artificial_method_body (mdecl);
8508 /* The actual method invocation uses the same args. When invoking a
8509 static methods that way, we don't want to skip the first
8512 if (!METHOD_STATIC (decl))
8513 carg = TREE_CHAIN (carg);
8514 for (; carg && carg != end_params_node; carg = TREE_CHAIN (carg))
8515 call_args = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (carg)),
8518 body = build_method_invocation (build_wfl_node (DECL_NAME (decl)),
8520 if (!METHOD_STATIC (decl))
8521 body = make_qualified_primary (build_wfl_node (TREE_PURPOSE (args)),
8523 if (TREE_TYPE (TREE_TYPE (decl)) != void_type_node)
8524 body = build_return (0, body);
8525 java_method_add_stmt (mdecl,body);
8526 end_artificial_method_body (mdecl);
8527 current_function_decl = saved_current_function_decl;
8529 /* Back tag the access function so it know what it accesses */
8530 DECL_FUNCTION_ACCESS_DECL (decl) = mdecl;
8532 /* Tag the current method so it knows it has an access generated */
8533 return DECL_FUNCTION_INNER_ACCESS (decl) = mdecl;
8537 /* This section of the code deals with building expressions to access
8538 the enclosing instance of an inner class. The enclosing instance is
8539 kept in a generated field called this$<n>, with <n> being the
8540 inner class nesting level (starting from 0.) */
8542 /* Build an access to a given this$<n>, always chaining access call to
8543 others. Access methods to this$<n> are build on the fly if
8544 necessary. This CAN'T be used to solely access this$<n-1> from
8545 this$<n> (which alway yield to special cases and optimization, see
8546 for example build_outer_field_access). */
8549 build_access_to_thisn (tree from, tree to, int lc)
8551 tree access = NULL_TREE;
8553 while (from != to && PURE_INNER_CLASS_TYPE_P (from))
8557 access = build_current_thisn (from);
8558 access = build_wfl_node (access);
8562 tree access0_wfl, cn;
8564 maybe_build_thisn_access_method (from);
8565 access0_wfl = build_wfl_node (access0_identifier_node);
8566 cn = build_wfl_node (DECL_NAME (TYPE_NAME (from)));
8567 EXPR_WFL_LINECOL (access0_wfl) = lc;
8568 access = build_tree_list (NULL_TREE, access);
8569 access = build_method_invocation (access0_wfl, access);
8570 access = make_qualified_primary (cn, access, lc);
8573 /* If FROM isn't an inner class, that's fine, we've done enough.
8574 What we're looking for can be accessed from there. */
8575 from = DECL_CONTEXT (TYPE_NAME (from));
8578 from = TREE_TYPE (from);
8583 /* Build an access function to the this$<n> local to TYPE. NULL_TREE
8584 is returned if nothing needs to be generated. Otherwise, the method
8585 generated and a method decl is returned.
8587 NOTE: These generated methods should be declared in a class file
8588 attribute so that they can't be referred to directly. */
8591 maybe_build_thisn_access_method (tree type)
8593 tree mdecl, args, stmt, rtype;
8594 tree saved_current_function_decl;
8596 /* If TYPE is a top-level class, no access method is required.
8597 If there already is such an access method, bail out. */
8598 if (CLASS_ACCESS0_GENERATED_P (type) || !PURE_INNER_CLASS_TYPE_P (type))
8601 /* We generate the method. The method looks like:
8602 static <outer_of_type> access$0 (<type> inst$) { return inst$.this$<n>; }
8604 args = build_tree_list (inst_id, build_pointer_type (type));
8605 TREE_CHAIN (args) = end_params_node;
8606 rtype = build_pointer_type (TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))));
8607 mdecl = create_artificial_method (type, ACC_STATIC, rtype,
8608 access0_identifier_node, args);
8609 fix_method_argument_names (args, mdecl);
8610 layout_class_method (type, NULL_TREE, mdecl, NULL_TREE);
8611 stmt = build_current_thisn (type);
8612 stmt = make_qualified_primary (build_wfl_node (inst_id),
8613 build_wfl_node (stmt), 0);
8614 stmt = build_return (0, stmt);
8616 saved_current_function_decl = current_function_decl;
8617 start_artificial_method_body (mdecl);
8618 java_method_add_stmt (mdecl, stmt);
8619 end_artificial_method_body (mdecl);
8620 current_function_decl = saved_current_function_decl;
8622 CLASS_ACCESS0_GENERATED_P (type) = 1;
8627 /* Craft an correctly numbered `this$<n>'string. this$0 is used for
8628 the first level of innerclassing. this$1 for the next one, etc...
8629 This function can be invoked with TYPE to NULL, available and then
8630 has to count the parser context. */
8632 static GTY(()) tree saved_thisn;
8633 static GTY(()) tree saved_type;
8636 build_current_thisn (tree type)
8638 static int saved_i = -1;
8639 static int saved_type_i = 0;
8646 if (type == saved_type)
8650 for (i = -1, decl = DECL_CONTEXT (TYPE_NAME (type));
8651 decl; decl = DECL_CONTEXT (decl), i++)
8659 i = list_length (GET_CPC_LIST ())-2;
8664 sprintf (buffer, "this$%d", i);
8666 saved_thisn = get_identifier (buffer);
8670 /* Return the assignment to the hidden enclosing context `this$<n>'
8671 by the second incoming parameter to the innerclass constructor. The
8672 form used is `this.this$<n> = this$<n>;'. */
8675 build_thisn_assign (void)
8677 if (current_class && PURE_INNER_CLASS_TYPE_P (current_class))
8679 tree thisn = build_current_thisn (current_class);
8680 tree lhs = make_qualified_primary (build_wfl_node (this_identifier_node),
8681 build_wfl_node (thisn), 0);
8682 tree rhs = build_wfl_node (thisn);
8683 EXPR_WFL_SET_LINECOL (lhs, input_line, 0);
8684 return build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (lhs), lhs, rhs);
8690 /* Building the synthetic `class$' used to implement the `.class' 1.1
8691 extension for non primitive types. This method looks like:
8693 static Class class$(String type) throws NoClassDefFoundError
8695 try {return (java.lang.Class.forName (String));}
8696 catch (ClassNotFoundException e) {
8697 throw new NoClassDefFoundError(e.getMessage());}
8700 static GTY(()) tree get_message_wfl;
8701 static GTY(()) tree type_parm_wfl;
8704 build_dot_class_method (tree class)
8706 #define BWF(S) build_wfl_node (get_identifier ((S)))
8707 #define MQN(X,Y) make_qualified_name ((X), (Y), 0)
8708 tree args, tmp, saved_current_function_decl, mdecl, qual_name;
8709 tree stmt, throw_stmt;
8711 if (!get_message_wfl)
8713 get_message_wfl = build_wfl_node (get_identifier ("getMessage"));
8714 type_parm_wfl = build_wfl_node (get_identifier ("type$"));
8717 /* Build the arguments */
8718 args = build_tree_list (get_identifier ("type$"),
8719 build_pointer_type (string_type_node));
8720 TREE_CHAIN (args) = end_params_node;
8722 /* Build the qualified name java.lang.Class.forName */
8723 tmp = MQN (MQN (MQN (BWF ("java"),
8724 BWF ("lang")), BWF ("Class")), BWF ("forName"));
8726 /* Create the "class$" function */
8727 mdecl = create_artificial_method (class, ACC_STATIC,
8728 build_pointer_type (class_type_node),
8729 classdollar_identifier_node, args);
8730 qual_name = MQN (MQN (BWF ("java"), BWF ("lang")),
8731 BWF ("NoClassDefFoundError"));
8732 DECL_FUNCTION_THROWS (mdecl) = build_tree_list (NULL_TREE, qual_name);
8733 register_incomplete_type (JDEP_EXCEPTION, qual_name, NULL_TREE, NULL_TREE);
8734 JDEP_GET_PATCH (CLASSD_LAST (ctxp->classd_list)) =
8735 &TREE_VALUE (DECL_FUNCTION_THROWS (mdecl));
8737 /* We start by building the try block. We need to build:
8738 return (java.lang.Class.forName (type)); */
8739 stmt = build_method_invocation (tmp,
8740 build_tree_list (NULL_TREE, type_parm_wfl));
8741 stmt = build_return (0, stmt);
8743 /* Now onto the catch block. We start by building the expression
8744 throwing a new exception: throw new NoClassDefFoundError (_.getMessage) */
8745 throw_stmt = make_qualified_name (build_wfl_node (wpv_id),
8746 get_message_wfl, 0);
8747 throw_stmt = build_method_invocation (throw_stmt, NULL_TREE);
8749 /* Build new NoClassDefFoundError (_.getMessage) */
8750 throw_stmt = build_new_invocation
8751 (build_wfl_node (get_identifier ("NoClassDefFoundError")),
8752 build_tree_list (build_pointer_type (string_type_node), throw_stmt));
8754 /* Build the throw, (it's too early to use BUILD_THROW) */
8755 throw_stmt = build1 (THROW_EXPR, NULL_TREE, throw_stmt);
8757 /* Encapsulate STMT in a try block. The catch clause executes THROW_STMT */
8758 qual_name = MQN (MQN (BWF ("java"), BWF ("lang")),
8759 BWF ("ClassNotFoundException"));
8760 stmt = encapsulate_with_try_catch (0, qual_name, stmt, throw_stmt);
8762 fix_method_argument_names (args, mdecl);
8763 layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
8764 saved_current_function_decl = current_function_decl;
8765 start_artificial_method_body (mdecl);
8766 java_method_add_stmt (mdecl, stmt);
8767 end_artificial_method_body (mdecl);
8768 current_function_decl = saved_current_function_decl;
8769 TYPE_DOT_CLASS (class) = mdecl;
8775 build_dot_class_method_invocation (tree this_class, tree type)
8777 tree dot_class_method = TYPE_DOT_CLASS (this_class);
8780 if (TYPE_ARRAY_P (type))
8781 sig_id = build_java_signature (type);
8783 sig_id = DECL_NAME (TYPE_NAME (type));
8785 /* Ensure that the proper name separator is used */
8786 sig_id = unmangle_classname (IDENTIFIER_POINTER (sig_id),
8787 IDENTIFIER_LENGTH (sig_id));
8789 s = build_string (IDENTIFIER_LENGTH (sig_id),
8790 IDENTIFIER_POINTER (sig_id));
8791 t = build_method_invocation (build_wfl_node (DECL_NAME (dot_class_method)),
8792 build_tree_list (NULL_TREE, s));
8793 if (DECL_CONTEXT (dot_class_method) != this_class)
8795 tree class_name = DECL_NAME (TYPE_NAME (DECL_CONTEXT (dot_class_method)));
8796 t = make_qualified_primary (build_wfl_node (class_name), t, 0);
8801 /* This section of the code deals with constructor. */
8803 /* Craft a body for default constructor. Patch existing constructor
8804 bodies with call to super() and field initialization statements if
8808 fix_constructors (tree mdecl)
8810 tree iii; /* Instance Initializer Invocation */
8811 tree body = DECL_FUNCTION_BODY (mdecl);
8812 tree thisn_assign, compound = NULL_TREE;
8813 tree class_type = DECL_CONTEXT (mdecl);
8815 if (DECL_FIXED_CONSTRUCTOR_P (mdecl))
8817 DECL_FIXED_CONSTRUCTOR_P (mdecl) = 1;
8821 /* It is an error for the compiler to generate a default
8822 constructor if the superclass doesn't have a constructor that
8823 takes no argument, or the same args for an anonymous class */
8824 if (verify_constructor_super (mdecl))
8826 tree sclass_decl = TYPE_NAME (CLASSTYPE_SUPER (class_type));
8827 tree save = DECL_NAME (mdecl);
8828 const char *n = IDENTIFIER_POINTER (DECL_NAME (sclass_decl));
8829 DECL_NAME (mdecl) = DECL_NAME (sclass_decl);
8831 (lookup_cl (TYPE_NAME (class_type)),
8832 "No constructor matching `%s' found in class `%s'",
8833 lang_printable_name (mdecl, 2), n);
8834 DECL_NAME (mdecl) = save;
8837 /* The constructor body must be crafted by hand. It's the
8838 constructor we defined when we realize we didn't have the
8839 CLASSNAME() constructor */
8840 start_artificial_method_body (mdecl);
8842 /* Insert an assignment to the this$<n> hidden field, if
8844 if ((thisn_assign = build_thisn_assign ()))
8845 java_method_add_stmt (mdecl, thisn_assign);
8847 /* We don't generate a super constructor invocation if we're
8848 compiling java.lang.Object. build_super_invocation takes care
8850 java_method_add_stmt (mdecl, build_super_invocation (mdecl));
8853 if ((iii = build_instinit_invocation (class_type)))
8854 java_method_add_stmt (mdecl, iii);
8856 end_artificial_method_body (mdecl);
8858 /* Search for an explicit constructor invocation */
8862 int invokes_this = 0;
8863 tree found_call = NULL_TREE;
8864 tree main_block = BLOCK_EXPR_BODY (body);
8867 switch (TREE_CODE (body))
8870 found = CALL_EXPLICIT_CONSTRUCTOR_P (body);
8871 if (CALL_THIS_CONSTRUCTOR_P (body))
8876 case EXPR_WITH_FILE_LOCATION:
8878 body = TREE_OPERAND (body, 0);
8882 body = BLOCK_EXPR_BODY (body);
8889 /* Generate the assignment to this$<n>, if necessary */
8890 if ((thisn_assign = build_thisn_assign ()))
8891 compound = add_stmt_to_compound (compound, NULL_TREE, thisn_assign);
8893 /* The constructor is missing an invocation of super() */
8895 compound = add_stmt_to_compound (compound, NULL_TREE,
8896 build_super_invocation (mdecl));
8897 /* Explicit super() invocation should take place before the
8898 instance initializer blocks. */
8901 compound = add_stmt_to_compound (compound, NULL_TREE,
8902 TREE_OPERAND (found_call, 0));
8903 TREE_OPERAND (found_call, 0) = build_java_empty_stmt ();
8906 DECL_INIT_CALLS_THIS (mdecl) = invokes_this;
8908 /* Insert the instance initializer block right after. */
8909 if (!invokes_this && (iii = build_instinit_invocation (class_type)))
8910 compound = add_stmt_to_compound (compound, NULL_TREE, iii);
8912 /* Fix the constructor main block if we're adding extra stmts */
8915 compound = add_stmt_to_compound (compound, NULL_TREE,
8916 BLOCK_EXPR_BODY (main_block));
8917 BLOCK_EXPR_BODY (main_block) = compound;
8922 /* Browse constructors in the super class, searching for a constructor
8923 that doesn't take any argument. Return 0 if one is found, 1
8924 otherwise. If the current class is an anonymous inner class, look
8925 for something that has the same signature. */
8928 verify_constructor_super (tree mdecl)
8930 tree class = CLASSTYPE_SUPER (current_class);
8931 int super_inner = PURE_INNER_CLASS_TYPE_P (class);
8937 if (ANONYMOUS_CLASS_P (current_class))
8939 tree mdecl_arg_type;
8940 SKIP_THIS_AND_ARTIFICIAL_PARMS (mdecl_arg_type, mdecl);
8941 for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
8942 if (DECL_CONSTRUCTOR_P (sdecl))
8945 tree arg_type = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl)));
8947 arg_type = TREE_CHAIN (arg_type);
8948 for (m_arg_type = mdecl_arg_type;
8949 (arg_type != end_params_node
8950 && m_arg_type != end_params_node);
8951 arg_type = TREE_CHAIN (arg_type),
8952 m_arg_type = TREE_CHAIN (m_arg_type))
8953 if (!valid_method_invocation_conversion_p
8954 (TREE_VALUE (arg_type),
8955 TREE_VALUE (m_arg_type)))
8958 if (arg_type == end_params_node && m_arg_type == end_params_node)
8964 for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
8966 tree arg = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl)));
8968 arg = TREE_CHAIN (arg);
8969 if (DECL_CONSTRUCTOR_P (sdecl) && arg == end_params_node)
8976 /* Generate code for all context remembered for code generation. */
8978 static GTY(()) tree reversed_class_list;
8980 java_expand_classes (void)
8982 int save_error_count = 0;
8983 static struct parser_ctxt *cur_ctxp = NULL;
8985 java_parse_abort_on_error ();
8986 if (!(ctxp = ctxp_for_generation))
8988 java_layout_classes ();
8989 java_parse_abort_on_error ();
8991 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
8994 for (current = cur_ctxp->class_list;
8996 current = TREE_CHAIN (current))
8997 gen_indirect_dispatch_tables (TREE_TYPE (current));
9000 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9003 input_filename = ctxp->filename;
9004 lang_init_source (2); /* Error msgs have method prototypes */
9005 java_complete_expand_classes (); /* Complete and expand classes */
9006 java_parse_abort_on_error ();
9008 input_filename = main_input_filename;
9010 /* Find anonymous classes and expand their constructor. This extra pass is
9011 necessary because the constructor itself is only generated when the
9012 method in which it is defined is expanded. */
9013 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9017 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
9019 output_class = current_class = TREE_TYPE (current);
9020 if (ANONYMOUS_CLASS_P (current_class))
9023 for (d = TYPE_METHODS (current_class); d; d = TREE_CHAIN (d))
9025 if (DECL_CONSTRUCTOR_P (d))
9027 java_complete_expand_method (d);
9028 break; /* There is only one constructor. */
9035 /* Expanding the constructors of anonymous classes generates access
9036 methods. Scan all the methods looking for null DECL_RESULTs --
9037 this will be the case if a method hasn't been expanded. */
9038 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9042 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
9045 output_class = current_class = TREE_TYPE (current);
9046 for (d = TYPE_METHODS (current_class); d; d = TREE_CHAIN (d))
9048 if (DECL_RESULT (d) == NULL_TREE)
9049 java_complete_expand_method (d);
9054 /* ??? Instead of all this we could iterate around the list of
9055 classes until there were no more un-expanded methods. It would
9056 take a little longer -- one pass over the whole list of methods
9057 -- but it would be simpler. Like this: */
9060 int something_changed;
9064 something_changed = 0;
9065 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9069 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
9072 output_class = current_class = TREE_TYPE (current);
9073 for (d = TYPE_METHODS (current_class); d; d = TREE_CHAIN (d))
9075 if (DECL_RESULT (d) == NULL_TREE)
9077 something_changed = 1;
9078 java_complete_expand_method (d);
9084 while (something_changed);
9088 /* If we've found error at that stage, don't try to generate
9089 anything, unless we're emitting xrefs or checking the syntax only
9090 (but not using -fsyntax-only for the purpose of generating
9092 if (java_error_count && !flag_emit_xref
9093 && (!flag_syntax_only && !flag_emit_class_files))
9096 /* Now things are stable, go for generation of the class data. */
9098 /* We pessimistically marked all methods and fields external until
9099 we knew what set of classes we were planning to compile. Now mark
9100 those that will be generated locally as not external. */
9101 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9105 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
9106 java_mark_class_local (TREE_TYPE (current));
9109 /* Compile the classes. */
9110 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9113 reversed_class_list = NULL;
9117 /* We write out the classes in reverse order. This ensures that
9118 inner classes are written before their containing classes,
9119 which is important for parallel builds. Otherwise, the
9120 class file for the outer class may be found, but the class
9121 file for the inner class may not be present. In that
9122 situation, the compiler cannot fall back to the original
9123 source, having already read the outer class, so we must
9124 prevent that situation. */
9125 for (current = ctxp->class_list;
9127 current = TREE_CHAIN (current))
9129 = tree_cons (NULL_TREE, current, reversed_class_list);
9131 for (current = reversed_class_list;
9133 current = TREE_CHAIN (current))
9135 output_class = current_class = TREE_TYPE (TREE_VALUE (current));
9136 if (flag_emit_class_files)
9137 write_classfile (current_class);
9139 expand_xref (current_class);
9140 else if (! flag_syntax_only)
9141 java_expand_method_bodies (current_class);
9147 java_finish_classes (void)
9149 static struct parser_ctxt *cur_ctxp = NULL;
9150 for (cur_ctxp = ctxp_for_generation; cur_ctxp; cur_ctxp = cur_ctxp->next)
9154 for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
9156 output_class = current_class = TREE_TYPE (current);
9162 /* Wrap non WFL PRIMARY around a WFL and set EXPR_WFL_QUALIFICATION to
9163 a tree list node containing RIGHT. Fore coming RIGHTs will be
9164 chained to this hook. LOCATION contains the location of the
9165 separating `.' operator. */
9168 make_qualified_primary (tree primary, tree right, int location)
9172 if (TREE_CODE (primary) != EXPR_WITH_FILE_LOCATION)
9173 wfl = build_wfl_wrap (primary, location);
9177 /* If wfl wasn't qualified, we build a first anchor */
9178 if (!EXPR_WFL_QUALIFICATION (wfl))
9179 EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (wfl, NULL_TREE);
9182 /* And chain them */
9183 EXPR_WFL_LINECOL (right) = location;
9184 chainon (EXPR_WFL_QUALIFICATION (wfl), build_tree_list (right, NULL_TREE));
9185 PRIMARY_P (wfl) = 1;
9189 /* Simple merge of two name separated by a `.' */
9192 merge_qualified_name (tree left, tree right)
9195 if (!left && !right)
9204 obstack_grow (&temporary_obstack, IDENTIFIER_POINTER (left),
9205 IDENTIFIER_LENGTH (left));
9206 obstack_1grow (&temporary_obstack, '.');
9207 obstack_grow0 (&temporary_obstack, IDENTIFIER_POINTER (right),
9208 IDENTIFIER_LENGTH (right));
9209 node = get_identifier (obstack_base (&temporary_obstack));
9210 obstack_free (&temporary_obstack, obstack_base (&temporary_obstack));
9211 QUALIFIED_P (node) = 1;
9215 /* Merge the two parts of a qualified name into LEFT. Set the
9216 location information of the resulting node to LOCATION, usually
9217 inherited from the location information of the `.' operator. */
9220 make_qualified_name (tree left, tree right, int location)
9222 #ifdef USE_COMPONENT_REF
9223 tree node = build3 (COMPONENT_REF, NULL_TREE, left, right, NULL_TREE);
9224 EXPR_WFL_LINECOL (node) = location;
9227 tree left_id = EXPR_WFL_NODE (left);
9228 tree right_id = EXPR_WFL_NODE (right);
9231 merge = merge_qualified_name (left_id, right_id);
9233 /* Left wasn't qualified and is now qualified */
9234 if (!QUALIFIED_P (left_id))
9236 tree wfl = build_expr_wfl (left_id, ctxp->filename, 0, 0);
9237 EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (left);
9238 EXPR_WFL_QUALIFICATION (left) = build_tree_list (wfl, NULL_TREE);
9241 wfl = build_expr_wfl (right_id, ctxp->filename, 0, 0);
9242 EXPR_WFL_LINECOL (wfl) = location;
9243 chainon (EXPR_WFL_QUALIFICATION (left), build_tree_list (wfl, NULL_TREE));
9245 EXPR_WFL_NODE (left) = merge;
9250 /* Extract the last identifier component of the qualified in WFL. The
9251 last identifier is removed from the linked list */
9254 cut_identifier_in_qualified (tree wfl)
9257 tree previous = NULL_TREE;
9258 for (q = EXPR_WFL_QUALIFICATION (wfl); ; previous = q, q = TREE_CHAIN (q))
9259 if (!TREE_CHAIN (q))
9262 /* Operating on a non qualified qualified WFL. */
9265 TREE_CHAIN (previous) = NULL_TREE;
9266 return TREE_PURPOSE (q);
9270 /* Resolve the expression name NAME. Return its decl. */
9273 resolve_expression_name (tree id, tree *orig)
9275 tree name = EXPR_WFL_NODE (id);
9278 /* 6.5.5.1: Simple expression names */
9279 if (!PRIMARY_P (id) && !QUALIFIED_P (name))
9281 /* 15.13.1: NAME can appear within the scope of a local variable
9283 if ((decl = IDENTIFIER_LOCAL_VALUE (name)))
9286 /* 15.13.1: NAME can appear within a class declaration */
9289 decl = lookup_field_wrapper (current_class, name);
9292 tree access = NULL_TREE;
9293 int fs = FIELD_STATIC (decl);
9295 /* If we're accessing an outer scope local alias, make
9296 sure we change the name of the field we're going to
9298 if (FIELD_LOCAL_ALIAS_USED (decl))
9299 name = DECL_NAME (decl);
9301 check_deprecation (id, decl);
9303 /* Instance variable (8.3.1.1) can't appear within
9304 static method, static initializer or initializer for
9305 a static variable. */
9306 if (!fs && METHOD_STATIC (current_function_decl))
9308 static_ref_err (id, name, current_class);
9309 return error_mark_node;
9311 /* Instance variables can't appear as an argument of
9312 an explicit constructor invocation */
9313 if (!fs && ctxp->explicit_constructor_p
9314 && !enclosing_context_p (DECL_CONTEXT (decl), current_class))
9317 (id, "Can't reference `%s' before the superclass constructor has been called", IDENTIFIER_POINTER (name));
9318 return error_mark_node;
9321 /* If we're processing an inner class and we're trying
9322 to access a field belonging to an outer class, build
9323 the access to the field */
9324 if (!fs && outer_field_access_p (current_class, decl))
9326 if (CLASS_STATIC (TYPE_NAME (current_class)))
9328 static_ref_err (id, DECL_NAME (decl), current_class);
9329 return error_mark_node;
9331 access = build_outer_field_access (id, decl);
9337 /* Otherwise build what it takes to access the field */
9338 access = build_field_ref ((fs ? NULL_TREE : current_this),
9339 DECL_CONTEXT (decl), name);
9341 access = maybe_build_class_init_for_field (decl, access);
9342 /* We may be asked to save the real field access node */
9345 /* Last check: can we access the field? */
9346 if (not_accessible_p (current_class, decl, NULL_TREE, 0))
9348 not_accessible_field_error (id, decl);
9349 return error_mark_node;
9351 /* And we return what we got */
9354 /* Fall down to error report on undefined variable */
9357 /* 6.5.5.2 Qualified Expression Names */
9362 qualify_ambiguous_name (id);
9363 /* 15.10.1 Field Access Using a Primary and/or Expression Name */
9364 /* 15.10.2: Accessing Superclass Members using super */
9365 return resolve_field_access (id, orig, NULL);
9368 /* We've got an error here */
9369 if (INNER_CLASS_TYPE_P (current_class))
9370 parse_error_context (id,
9371 "Local variable `%s' can't be accessed from within the inner class `%s' unless it is declared final",
9372 IDENTIFIER_POINTER (name),
9373 IDENTIFIER_POINTER (DECL_NAME
9374 (TYPE_NAME (current_class))));
9376 parse_error_context (id, "Undefined variable `%s'",
9377 IDENTIFIER_POINTER (name));
9379 return error_mark_node;
9383 static_ref_err (tree wfl, tree field_id, tree class_type)
9387 "Can't make a static reference to nonstatic variable `%s' in class `%s'",
9388 IDENTIFIER_POINTER (field_id),
9389 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (class_type))));
9392 /* 15.10.1 Field Access Using a Primary and/or Expression Name.
9393 We return something suitable to generate the field access. We also
9394 return the field decl in FIELD_DECL and its type in FIELD_TYPE. If
9395 recipient's address can be null. */
9398 resolve_field_access (tree qual_wfl, tree *field_decl, tree *field_type)
9402 tree decl = NULL_TREE, where_found, type_found;
9404 if (resolve_qualified_expression_name (qual_wfl, &decl,
9405 &where_found, &type_found))
9406 return error_mark_node;
9408 /* Resolve the LENGTH field of an array here */
9409 if (DECL_P (decl) && DECL_NAME (decl) == length_identifier_node
9410 && type_found && TYPE_ARRAY_P (type_found)
9411 && ! flag_emit_class_files && ! flag_emit_xref)
9413 tree length = build_java_array_length_access (where_found);
9416 /* In case we're dealing with a static array, we need to
9417 initialize its class before the array length can be fetched.
9418 It's also a good time to create a DECL_RTL for the field if
9419 none already exists, otherwise if the field was declared in a
9420 class found in an external file and hasn't been (and won't
9421 be) accessed for its value, none will be created. */
9422 if (TREE_CODE (where_found) == VAR_DECL && FIELD_STATIC (where_found))
9424 build_static_field_ref (where_found);
9425 field_ref = build_class_init (DECL_CONTEXT (where_found), field_ref);
9428 /* We might have been trying to resolve field.method(). In which
9429 case, the resolution is over and decl is the answer */
9430 else if (JDECL_P (decl) && IDENTIFIER_LOCAL_VALUE (DECL_NAME (decl)) == decl)
9432 else if (JDECL_P (decl))
9435 type_found = DECL_CONTEXT (decl);
9436 is_static = FIELD_STATIC (decl);
9437 field_ref = build_field_ref ((is_static && !flag_emit_xref?
9438 NULL_TREE : where_found),
9439 type_found, DECL_NAME (decl));
9440 if (field_ref == error_mark_node)
9441 return error_mark_node;
9443 field_ref = maybe_build_class_init_for_field (decl, field_ref);
9445 /* If we're looking at a static field, we may need to generate a
9446 class initialization for it. This can happen when the access
9447 looks like `field.ref', where `field' is a static field in an
9448 interface we implement. */
9449 if (!flag_emit_class_files
9451 && TREE_CODE (where_found) == VAR_DECL
9452 && FIELD_STATIC (where_found))
9454 build_static_field_ref (where_found);
9455 field_ref = build_class_init (DECL_CONTEXT (where_found), field_ref);
9464 *field_type = (QUAL_DECL_TYPE (decl) ?
9465 QUAL_DECL_TYPE (decl) : TREE_TYPE (decl));
9469 /* If NODE is an access to f static field, strip out the class
9470 initialization part and return the field decl, otherwise, return
9474 strip_out_static_field_access_decl (tree node)
9476 if (TREE_CODE (node) == COMPOUND_EXPR)
9478 tree op1 = TREE_OPERAND (node, 1);
9479 if (TREE_CODE (op1) == COMPOUND_EXPR)
9481 tree call = TREE_OPERAND (op1, 0);
9482 if (TREE_CODE (call) == CALL_EXPR
9483 && TREE_CODE (TREE_OPERAND (call, 0)) == ADDR_EXPR
9484 && TREE_OPERAND (TREE_OPERAND (call, 0), 0)
9485 == soft_initclass_node)
9486 return TREE_OPERAND (op1, 1);
9488 else if (JDECL_P (op1))
9494 /* 6.5.5.2: Qualified Expression Names */
9497 resolve_qualified_expression_name (tree wfl, tree *found_decl,
9498 tree *where_found, tree *type_found)
9500 int from_type = 0; /* Field search initiated from a type */
9501 int from_super = 0, from_cast = 0, from_qualified_this = 0;
9502 int previous_call_static = 0;
9504 tree decl = NULL_TREE, type = NULL_TREE, q;
9505 /* For certain for of inner class instantiation */
9506 tree saved_current, saved_this;
9507 #define RESTORE_THIS_AND_CURRENT_CLASS \
9508 { current_class = saved_current; current_this = saved_this;}
9510 *type_found = *where_found = NULL_TREE;
9512 for (q = EXPR_WFL_QUALIFICATION (wfl); q; q = TREE_CHAIN (q))
9514 tree qual_wfl = QUAL_WFL (q);
9515 tree ret_decl; /* for EH checking */
9516 int location; /* for EH checking */
9518 /* 15.10.1 Field Access Using a Primary */
9519 switch (TREE_CODE (qual_wfl))
9522 case NEW_CLASS_EXPR:
9523 /* If the access to the function call is a non static field,
9524 build the code to access it. */
9525 if (JDECL_P (decl) && !FIELD_STATIC (decl))
9527 decl = maybe_access_field (decl, *where_found,
9528 DECL_CONTEXT (decl));
9529 if (decl == error_mark_node)
9533 /* And code for the function call */
9534 if (complete_function_arguments (qual_wfl))
9537 /* We might have to setup a new current class and a new this
9538 for the search of an inner class, relative to the type of
9539 a expression resolved as `decl'. The current values are
9540 saved and restored shortly after */
9541 saved_current = current_class;
9542 saved_this = current_this;
9544 && (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR
9545 || from_qualified_this))
9547 /* If we still have `from_qualified_this', we have the form
9548 <T>.this.f() and we need to build <T>.this */
9549 if (from_qualified_this)
9551 decl = build_access_to_thisn (current_class, type, 0);
9552 decl = java_complete_tree (decl);
9553 type = TREE_TYPE (TREE_TYPE (decl));
9555 current_class = type;
9556 current_this = decl;
9557 from_qualified_this = 0;
9560 if (from_super && TREE_CODE (qual_wfl) == CALL_EXPR)
9561 CALL_USING_SUPER (qual_wfl) = 1;
9562 location = (TREE_CODE (qual_wfl) == CALL_EXPR ?
9563 EXPR_WFL_LINECOL (TREE_OPERAND (qual_wfl, 0)) : 0);
9564 *where_found = patch_method_invocation (qual_wfl, decl, type,
9566 &is_static, &ret_decl);
9568 if (*where_found == error_mark_node)
9570 RESTORE_THIS_AND_CURRENT_CLASS;
9573 *type_found = type = QUAL_DECL_TYPE (*where_found);
9575 *where_found = force_evaluation_order (*where_found);
9577 /* If we're creating an inner class instance, check for that
9578 an enclosing instance is in scope */
9579 if (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR
9580 && INNER_ENCLOSING_SCOPE_CHECK (type))
9583 (qual_wfl, "No enclosing instance for inner class `%s' is in scope%s",
9584 lang_printable_name (type, 0),
9585 (!current_this ? "" :
9586 "; an explicit one must be provided when creating this inner class"));
9587 RESTORE_THIS_AND_CURRENT_CLASS;
9591 /* In case we had to change then to resolve a inner class
9592 instantiation using a primary qualified by a `new' */
9593 RESTORE_THIS_AND_CURRENT_CLASS;
9597 tree arguments = NULL_TREE;
9598 if (TREE_CODE (qual_wfl) == CALL_EXPR
9599 && TREE_OPERAND (qual_wfl, 1) != NULL_TREE)
9600 arguments = TREE_VALUE (TREE_OPERAND (qual_wfl, 1));
9601 check_thrown_exceptions (location, ret_decl, arguments);
9604 /* If the previous call was static and this one is too,
9605 build a compound expression to hold the two (because in
9606 that case, previous function calls aren't transported as
9607 forcoming function's argument. */
9608 if (previous_call_static && is_static)
9610 /* We must set CAN_COMPLETE_NORMALLY for the first call
9611 since it is done nowhere else. */
9612 CAN_COMPLETE_NORMALLY (decl) = 1;
9613 decl = build2 (COMPOUND_EXPR, TREE_TYPE (*where_found),
9614 decl, *where_found);
9615 TREE_SIDE_EFFECTS (decl) = 1;
9619 previous_call_static = is_static;
9620 decl = *where_found;
9625 case NEW_ARRAY_EXPR:
9626 case NEW_ANONYMOUS_ARRAY_EXPR:
9627 *where_found = decl = java_complete_tree (qual_wfl);
9628 if (decl == error_mark_node)
9630 *type_found = type = QUAL_DECL_TYPE (decl);
9634 *where_found = decl = java_complete_tree (qual_wfl);
9635 if (decl == error_mark_node)
9637 *type_found = type = QUAL_DECL_TYPE (decl);
9641 case CONDITIONAL_EXPR:
9644 *where_found = decl = java_complete_tree (qual_wfl);
9645 if (decl == error_mark_node)
9647 *type_found = type = QUAL_DECL_TYPE (decl);
9651 /* If the access to the function call is a non static field,
9652 build the code to access it. */
9653 if (JDECL_P (decl) && !FIELD_STATIC (decl))
9655 decl = maybe_access_field (decl, *where_found, type);
9656 if (decl == error_mark_node)
9659 /* And code for the array reference expression */
9660 decl = java_complete_tree (qual_wfl);
9661 if (decl == error_mark_node)
9663 type = QUAL_DECL_TYPE (decl);
9667 if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
9669 if ((type = patch_string (decl)))
9671 *where_found = QUAL_RESOLUTION (q) = decl;
9672 *type_found = type = TREE_TYPE (decl);
9676 if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
9678 *where_found = QUAL_RESOLUTION (q) = decl;
9679 *type_found = type = TREE_TYPE (decl);
9683 /* Fix for -Wall Just go to the next statement. Don't
9688 /* If we fall here, we weren't processing a (static) function call. */
9689 previous_call_static = 0;
9691 /* It can be the keyword THIS */
9692 if (TREE_CODE (qual_wfl) == EXPR_WITH_FILE_LOCATION
9693 && EXPR_WFL_NODE (qual_wfl) == this_identifier_node)
9698 (wfl, "Keyword `this' used outside allowed context");
9701 if (ctxp->explicit_constructor_p
9702 && type == current_class)
9704 parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
9707 /* We have to generate code for intermediate access */
9708 if (!from_type || TREE_TYPE (TREE_TYPE (current_this)) == type)
9710 *where_found = decl = current_this;
9711 *type_found = type = QUAL_DECL_TYPE (decl);
9713 /* We're trying to access the this from somewhere else. Make sure
9714 it's allowed before doing so. */
9717 if (!enclosing_context_p (type, current_class))
9719 char *p = xstrdup (lang_printable_name (type, 0));
9720 parse_error_context (qual_wfl, "Can't use variable `%s.this': type `%s' isn't an outer type of type `%s'",
9722 lang_printable_name (current_class, 0));
9726 from_qualified_this = 1;
9727 /* If there's nothing else after that, we need to
9728 produce something now, otherwise, the section of the
9729 code that needs to produce <T>.this will generate
9730 what is necessary. */
9731 if (!TREE_CHAIN (q))
9733 decl = build_access_to_thisn (current_class, type, 0);
9734 *where_found = decl = java_complete_tree (decl);
9735 *type_found = type = TREE_TYPE (decl);
9743 /* 15.10.2 Accessing Superclass Members using SUPER */
9744 if (TREE_CODE (qual_wfl) == EXPR_WITH_FILE_LOCATION
9745 && EXPR_WFL_NODE (qual_wfl) == super_identifier_node)
9748 /* Check on the restricted use of SUPER */
9749 if (METHOD_STATIC (current_function_decl)
9750 || current_class == object_type_node)
9753 (wfl, "Keyword `super' used outside allowed context");
9756 /* Otherwise, treat SUPER as (SUPER_CLASS)THIS */
9757 node = build_cast (EXPR_WFL_LINECOL (qual_wfl),
9758 CLASSTYPE_SUPER (current_class),
9759 build_this (EXPR_WFL_LINECOL (qual_wfl)));
9760 *where_found = decl = java_complete_tree (node);
9761 if (decl == error_mark_node)
9763 *type_found = type = QUAL_DECL_TYPE (decl);
9764 from_super = from_type = 1;
9768 /* 15.13.1: Can't search for field name in packages, so we
9769 assume a variable/class name was meant. */
9770 if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
9773 if ((decl = resolve_package (wfl, &q, &name)))
9776 *where_found = decl;
9778 check_pkg_class_access (DECL_NAME (decl), qual_wfl, true, NULL);
9780 /* We want to be absolutely sure that the class is laid
9781 out. We're going to search something inside it. */
9782 *type_found = type = TREE_TYPE (decl);
9783 layout_class (type);
9786 /* Fix them all the way down, if any are left. */
9789 list = TREE_CHAIN (q);
9792 RESOLVE_PACKAGE_NAME_P (QUAL_WFL (list)) = 0;
9793 list = TREE_CHAIN (list);
9799 if (from_super || from_cast)
9801 ((from_cast ? qual_wfl : wfl),
9802 "No variable `%s' defined in class `%s'",
9803 IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
9804 lang_printable_name (type, 0));
9807 (qual_wfl, "Undefined variable or class name: `%s'",
9808 IDENTIFIER_POINTER (name));
9813 /* We have a type name. It's been already resolved when the
9814 expression was qualified. */
9815 else if (RESOLVE_TYPE_NAME_P (qual_wfl) && QUAL_RESOLUTION (q))
9817 decl = QUAL_RESOLUTION (q);
9819 /* Sneak preview. If next we see a `new', we're facing a
9820 qualification which resulted in a type being selected
9821 instead of a field. Report the error. */
9823 && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR)
9825 parse_error_context (qual_wfl, "Undefined variable `%s'",
9826 IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
9830 check_pkg_class_access (DECL_NAME (decl), qual_wfl, true, NULL);
9832 check_deprecation (qual_wfl, decl);
9834 type = TREE_TYPE (decl);
9837 /* We resolve an expression name */
9840 tree field_decl = NULL_TREE;
9842 /* If there exists an early resolution, use it. That occurs
9843 only once and we know that there are more things to
9844 come. Don't do that when processing something after SUPER
9845 (we need more thing to be put in place below */
9846 if (!from_super && QUAL_RESOLUTION (q))
9848 decl = QUAL_RESOLUTION (q);
9851 if (TREE_CODE (decl) == FIELD_DECL && !FIELD_STATIC (decl))
9854 *where_found = current_this;
9857 static_ref_err (qual_wfl, DECL_NAME (decl),
9861 if (outer_field_access_p (current_class, decl))
9862 decl = build_outer_field_access (qual_wfl, decl);
9866 *where_found = TREE_TYPE (decl);
9867 if (TREE_CODE (*where_found) == POINTER_TYPE)
9868 *where_found = TREE_TYPE (*where_found);
9873 /* Report and error if we're using a numerical literal as a
9874 qualifier. It can only be an INTEGER_CST. */
9875 else if (TREE_CODE (qual_wfl) == INTEGER_CST)
9878 (wfl, "Can't use type `%s' as a qualifier",
9879 lang_printable_name (TREE_TYPE (qual_wfl), 0));
9883 /* We have to search for a field, knowing the type of its
9884 container. The flag FROM_TYPE indicates that we resolved
9885 the last member of the expression as a type name, which
9886 means that for the resolution of this field, we'll look
9887 for other errors than if it was resolved as a member of
9892 tree field_decl_type; /* For layout */
9894 if (!from_type && !JREFERENCE_TYPE_P (type))
9897 (qual_wfl, "Attempt to reference field `%s' in `%s %s'",
9898 IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
9899 lang_printable_name (type, 0),
9900 IDENTIFIER_POINTER (DECL_NAME (decl)));
9904 field_decl = lookup_field_wrapper (type,
9905 EXPR_WFL_NODE (qual_wfl));
9907 /* Maybe what we're trying to access to is an inner
9908 class, only if decl is a TYPE_DECL. */
9909 if (!field_decl && TREE_CODE (decl) == TYPE_DECL)
9911 tree ptr, inner_decl;
9913 BUILD_PTR_FROM_NAME (ptr, EXPR_WFL_NODE (qual_wfl));
9914 inner_decl = resolve_class (decl, ptr, NULL_TREE, qual_wfl);
9917 check_inner_class_access (inner_decl, decl, qual_wfl);
9918 type = TREE_TYPE (inner_decl);
9925 if (field_decl == NULL_TREE)
9928 (qual_wfl, "No variable `%s' defined in type `%s'",
9929 IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
9930 GET_TYPE_NAME (type));
9933 if (field_decl == error_mark_node)
9936 /* Layout the type of field_decl, since we may need
9937 it. Don't do primitive types or loaded classes. The
9938 situation of non primitive arrays may not handled
9939 properly here. FIXME */
9940 if (TREE_CODE (TREE_TYPE (field_decl)) == POINTER_TYPE)
9941 field_decl_type = TREE_TYPE (TREE_TYPE (field_decl));
9943 field_decl_type = TREE_TYPE (field_decl);
9944 if (!JPRIMITIVE_TYPE_P (field_decl_type)
9945 && !CLASS_LOADED_P (field_decl_type)
9946 && !TYPE_ARRAY_P (field_decl_type))
9947 resolve_and_layout (field_decl_type, NULL_TREE);
9949 /* Check on accessibility here */
9950 if (not_accessible_p (current_class, field_decl,
9951 *type_found, from_super))
9952 return not_accessible_field_error (qual_wfl,field_decl);
9953 check_deprecation (qual_wfl, field_decl);
9955 /* There are things to check when fields are accessed
9956 from type. There are no restrictions on a static
9957 declaration of the field when it is accessed from an
9959 is_static = FIELD_STATIC (field_decl);
9960 if (!from_super && from_type
9961 && !TYPE_INTERFACE_P (type)
9963 && (current_function_decl
9964 && METHOD_STATIC (current_function_decl)))
9966 static_ref_err (qual_wfl, EXPR_WFL_NODE (qual_wfl), type);
9969 from_cast = from_super = 0;
9971 /* It's an access from a type but it isn't static, we
9972 make it relative to `this'. */
9973 if (!is_static && from_type)
9974 decl = current_this;
9976 /* If we need to generate something to get a proper
9977 handle on what this field is accessed from, do it
9981 decl = maybe_access_field (decl, *where_found, *type_found);
9982 if (decl == error_mark_node)
9986 /* We want to keep the location were found it, and the type
9988 *where_found = decl;
9991 /* Generate the correct expression for field access from
9993 if (from_qualified_this)
9995 field_decl = build_outer_field_access (qual_wfl, field_decl);
9996 from_qualified_this = 0;
9999 /* This is the decl found and eventually the next one to
10004 type = QUAL_DECL_TYPE (decl);
10006 /* Sneak preview. If decl is qualified by a `new', report
10007 the error here to be accurate on the peculiar construct */
10009 && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR
10010 && !JREFERENCE_TYPE_P (type))
10012 parse_error_context (qual_wfl, "Attempt to reference field `new' in a `%s'",
10013 lang_printable_name (type, 0));
10017 /* `q' might have changed due to a after package resolution
10018 re-qualification */
10022 *found_decl = decl;
10026 /* 6.6 Qualified name and access control. Returns 1 if MEMBER (a decl)
10027 can't be accessed from REFERENCE (a record type). If MEMBER
10028 features a protected access, we then use WHERE which, if non null,
10029 holds the type of MEMBER's access that is checked against
10030 6.6.2.1. This function should be used when decl is a field or a
10034 not_accessible_p (tree reference, tree member, tree where, int from_super)
10036 int access_flag = get_access_flags_from_decl (member);
10037 bool is_static = false;
10039 if (TREE_CODE (member) == FIELD_DECL ||
10040 TREE_CODE (member) == VAR_DECL)
10041 is_static = FIELD_STATIC (member);
10043 is_static = METHOD_STATIC (member);
10045 /* Access always granted for members declared public */
10046 if (access_flag & ACC_PUBLIC)
10049 /* Check access on protected members */
10050 if (access_flag & ACC_PROTECTED)
10052 /* Access granted if it occurs from within the package
10053 containing the class in which the protected member is
10055 if (class_in_current_package (DECL_CONTEXT (member)))
10058 /* If accessed with the form `super.member', then access is granted */
10062 /* If WHERE is active, access was made through a qualifier. For
10063 non-static members, access is granted if the type of the qualifier
10064 is or is a sublass of the type the access is made from (6.6.2.1.) */
10065 if (where && !is_static)
10069 if (inherits_from_p (where, reference))
10071 if (INNER_CLASS_TYPE_P (reference))
10072 reference = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (reference)));
10079 /* Otherwise, access is granted if occurring from within the class
10080 where member is declared, or a subclass of it. */
10083 if (inherits_from_p (reference, DECL_CONTEXT (member)))
10085 if (INNER_CLASS_TYPE_P (reference))
10086 reference = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (reference)));
10093 /* Check access on private members. Access is granted only if it
10094 occurs from within the class in which it is declared -- that does
10095 it for innerclasses too. */
10096 if (access_flag & ACC_PRIVATE)
10098 if (reference == DECL_CONTEXT (member) ||
10099 common_enclosing_context_p (DECL_CONTEXT (member), reference))
10104 /* Default access is permitted only when occurring from within the
10105 package in which the context (MEMBER) is declared. */
10106 return !class_in_current_package (DECL_CONTEXT (member));
10109 /* Test deprecated decl access. */
10111 check_deprecation (tree wfl, tree decl)
10116 if (! warn_deprecated)
10119 /* We want to look at the element type of arrays here, so we strip
10120 all surrounding array types. */
10121 if (TYPE_ARRAY_P (TREE_TYPE (decl)))
10123 elt = TREE_TYPE (decl);
10124 while (TYPE_ARRAY_P (elt))
10125 elt = TYPE_ARRAY_ELEMENT (elt);
10126 /* We'll end up with a pointer type, so we use TREE_TYPE to go
10128 decl = TYPE_NAME (TREE_TYPE (elt));
10130 file = DECL_SOURCE_FILE (decl);
10132 /* Complain if the field is deprecated and the file it was defined
10133 in isn't compiled at the same time the file which contains its
10135 if (DECL_DEPRECATED (decl)
10136 && !IS_A_COMMAND_LINE_FILENAME_P (get_identifier (file)))
10139 switch (TREE_CODE (decl))
10141 case FUNCTION_DECL:
10149 parse_warning_context (wfl, "The class `%s' has been deprecated",
10150 IDENTIFIER_POINTER (DECL_NAME (decl)));
10155 /* Don't issue a message if the context as been deprecated as a
10157 if (! CLASS_DEPRECATED (TYPE_NAME (DECL_CONTEXT (decl))))
10158 parse_warning_context
10159 (wfl, "The %s `%s' in class `%s' has been deprecated",
10160 the, lang_printable_name (decl, 0),
10161 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))));
10165 /* Returns 1 if class was declared in the current package, 0 otherwise */
10167 static GTY(()) tree cicp_cache;
10169 class_in_current_package (tree class)
10171 int qualified_flag;
10174 if (cicp_cache == class)
10177 qualified_flag = QUALIFIED_P (DECL_NAME (TYPE_NAME (class)));
10179 /* If the current package is empty and the name of CLASS is
10180 qualified, class isn't in the current package. If there is a
10181 current package and the name of the CLASS is not qualified, class
10182 isn't in the current package */
10183 if ((!ctxp->package && qualified_flag) || (ctxp->package && !qualified_flag))
10186 /* If there is not package and the name of CLASS isn't qualified,
10187 they belong to the same unnamed package */
10188 if (!ctxp->package && !qualified_flag)
10191 /* Compare the left part of the name of CLASS with the package name */
10192 split_qualified_name (&left, NULL, DECL_NAME (TYPE_NAME (class)));
10193 if (ctxp->package == left)
10195 cicp_cache = class;
10201 /* This function may generate code to access DECL from WHERE. This is
10202 done only if certain conditions meet. */
10205 maybe_access_field (tree decl, tree where, tree type)
10207 if (TREE_CODE (decl) == FIELD_DECL && decl != current_this
10208 && !FIELD_STATIC (decl))
10209 decl = build_field_ref (where ? where : current_this,
10210 (type ? type : DECL_CONTEXT (decl)),
10215 /* Build a method invocation, by patching PATCH. If non NULL
10216 and according to the situation, PRIMARY and WHERE may be
10217 used. IS_STATIC is set to 1 if the invoked function is static. */
10220 patch_method_invocation (tree patch, tree primary, tree where, int from_super,
10221 int *is_static, tree *ret_decl)
10223 tree wfl = TREE_OPERAND (patch, 0);
10224 tree args = TREE_OPERAND (patch, 1);
10225 tree name = EXPR_WFL_NODE (wfl);
10227 int is_static_flag = 0;
10228 int is_super_init = 0;
10229 tree this_arg = NULL_TREE;
10230 int is_array_clone_call = 0;
10232 /* Should be overridden if everything goes well. Otherwise, if
10233 something fails, it should keep this value. It stop the
10234 evaluation of a bogus assignment. See java_complete_tree,
10235 MODIFY_EXPR: for the reasons why we sometimes want to keep on
10236 evaluating an assignment */
10237 TREE_TYPE (patch) = error_mark_node;
10239 /* Since lookup functions are messing with line numbers, save the
10241 java_parser_context_save_global ();
10243 /* 15.11.1: Compile-Time Step 1: Determine Class or Interface to Search */
10245 /* Resolution of qualified name, excluding constructors */
10246 if (QUALIFIED_P (name) && !CALL_CONSTRUCTOR_P (patch))
10248 tree identifier, identifier_wfl, type, resolved;
10249 /* Extract the last IDENTIFIER of the qualified
10250 expression. This is a wfl and we will use it's location
10251 data during error report. */
10252 identifier_wfl = cut_identifier_in_qualified (wfl);
10253 identifier = EXPR_WFL_NODE (identifier_wfl);
10255 /* Given the context, IDENTIFIER is syntactically qualified
10256 as a MethodName. We need to qualify what's before */
10257 qualify_ambiguous_name (wfl);
10258 resolved = resolve_field_access (wfl, NULL, NULL);
10260 if (TREE_CODE (resolved) == VAR_DECL && FIELD_STATIC (resolved)
10261 && FIELD_FINAL (resolved)
10262 && !inherits_from_p (DECL_CONTEXT (resolved), current_class)
10263 && !flag_emit_class_files && !flag_emit_xref)
10264 resolved = build_class_init (DECL_CONTEXT (resolved), resolved);
10266 if (resolved == error_mark_node)
10267 PATCH_METHOD_RETURN_ERROR ();
10269 type = GET_SKIP_TYPE (resolved);
10270 resolve_and_layout (type, NULL_TREE);
10272 if (JPRIMITIVE_TYPE_P (type))
10274 parse_error_context
10276 "Can't invoke a method on primitive type `%s'",
10277 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
10278 PATCH_METHOD_RETURN_ERROR ();
10281 list = lookup_method_invoke (0, identifier_wfl, type, identifier, args);
10282 args = nreverse (args);
10284 /* We're resolving a call from a type */
10285 if (TREE_CODE (resolved) == TYPE_DECL)
10287 if (CLASS_INTERFACE (resolved))
10289 parse_error_context
10291 "Can't make static reference to method `%s' in interface `%s'",
10292 IDENTIFIER_POINTER (identifier),
10293 IDENTIFIER_POINTER (name));
10294 PATCH_METHOD_RETURN_ERROR ();
10296 if (list && !METHOD_STATIC (list))
10298 char *fct_name = xstrdup (lang_printable_name (list, 2));
10299 parse_error_context
10301 "Can't make static reference to method `%s %s' in class `%s'",
10302 lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0),
10303 fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
10305 PATCH_METHOD_RETURN_ERROR ();
10309 this_arg = primary = resolved;
10311 if (TYPE_ARRAY_P (type) && identifier == get_identifier ("clone"))
10312 is_array_clone_call = 1;
10314 /* IDENTIFIER_WFL will be used to report any problem further */
10315 wfl = identifier_wfl;
10317 /* Resolution of simple names, names generated after a primary: or
10321 tree class_to_search = NULL_TREE;
10322 int lc; /* Looking for Constructor */
10324 /* We search constructor in their target class */
10325 if (CALL_CONSTRUCTOR_P (patch))
10327 if (TREE_CODE (patch) == NEW_CLASS_EXPR)
10328 class_to_search = EXPR_WFL_NODE (wfl);
10329 else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) ==
10330 this_identifier_node)
10331 class_to_search = NULL_TREE;
10332 else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) ==
10333 super_identifier_node)
10336 if (CLASSTYPE_SUPER (current_class))
10338 DECL_NAME (TYPE_NAME (CLASSTYPE_SUPER (current_class)));
10341 parse_error_context (wfl, "Can't invoke super constructor on java.lang.Object");
10342 PATCH_METHOD_RETURN_ERROR ();
10346 /* Class to search is NULL if we're searching the current one */
10347 if (class_to_search)
10349 class_to_search = resolve_and_layout (class_to_search, wfl);
10351 if (!class_to_search)
10353 parse_error_context
10354 (wfl, "Class `%s' not found in type declaration",
10355 IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
10356 PATCH_METHOD_RETURN_ERROR ();
10359 /* Can't instantiate an abstract class, but we can
10360 invoke it's constructor. It's use within the `new'
10361 context is denied here. */
10362 if (CLASS_ABSTRACT (class_to_search)
10363 && TREE_CODE (patch) == NEW_CLASS_EXPR)
10365 parse_error_context
10366 (wfl, "Class `%s' is an abstract class. It can't be instantiated",
10367 IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
10368 PATCH_METHOD_RETURN_ERROR ();
10371 class_to_search = TREE_TYPE (class_to_search);
10374 class_to_search = current_class;
10377 /* This is a regular search in the local class, unless an
10378 alternate class is specified. */
10381 if (where != NULL_TREE)
10382 class_to_search = where;
10383 else if (QUALIFIED_P (name))
10384 class_to_search = current_class;
10387 class_to_search = current_class;
10391 if (has_method (class_to_search, name))
10393 if (! INNER_CLASS_TYPE_P (class_to_search))
10395 parse_error_context (wfl,
10396 "No method named `%s' in scope",
10397 IDENTIFIER_POINTER (name));
10398 PATCH_METHOD_RETURN_ERROR ();
10401 = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class_to_search)));
10407 /* NAME is a simple identifier or comes from a primary. Search
10408 in the class whose declaration contain the method being
10410 resolve_and_layout (class_to_search, NULL_TREE);
10412 list = lookup_method_invoke (lc, wfl, class_to_search, name, args);
10413 /* Don't continue if no method were found, as the next statement
10414 can't be executed then. */
10416 PATCH_METHOD_RETURN_ERROR ();
10418 if (TYPE_ARRAY_P (class_to_search)
10419 && DECL_NAME (list) == get_identifier ("clone"))
10420 is_array_clone_call = 1;
10422 /* Check for static reference if non static methods */
10423 if (check_for_static_method_reference (wfl, patch, list,
10424 class_to_search, primary))
10425 PATCH_METHOD_RETURN_ERROR ();
10427 /* Check for inner classes creation from illegal contexts */
10428 if (lc && (INNER_CLASS_TYPE_P (class_to_search)
10429 && !CLASS_STATIC (TYPE_NAME (class_to_search)))
10430 && INNER_ENCLOSING_SCOPE_CHECK (class_to_search)
10431 && !DECL_INIT_P (current_function_decl))
10433 parse_error_context
10434 (wfl, "No enclosing instance for inner class `%s' is in scope%s",
10435 lang_printable_name (class_to_search, 0),
10436 (!current_this ? "" :
10437 "; an explicit one must be provided when creating this inner class"));
10438 PATCH_METHOD_RETURN_ERROR ();
10441 /* Non static methods are called with the current object extra
10442 argument. If patch a `new TYPE()', the argument is the value
10443 returned by the object allocator. If method is resolved as a
10444 primary, use the primary otherwise use the current THIS. */
10445 args = nreverse (args);
10446 if (TREE_CODE (patch) != NEW_CLASS_EXPR)
10448 this_arg = primary ? primary : current_this;
10450 /* If we're using an access method, things are different.
10451 There are two family of cases:
10453 1) We're not generating bytecodes:
10455 - LIST is non static. It's invocation is transformed from
10456 x(a1,...,an) into this$<n>.x(a1,....an).
10457 - LIST is static. It's invocation is transformed from
10458 x(a1,...,an) into TYPE_OF(this$<n>).x(a1,....an)
10460 2) We're generating bytecodes:
10462 - LIST is non static. It's invocation is transformed from
10463 x(a1,....,an) into access$<n>(this$<n>,a1,...,an).
10464 - LIST is static. It's invocation is transformed from
10465 x(a1,....,an) into TYPE_OF(this$<n>).x(a1,....an).
10467 Of course, this$<n> can be arbitrarily complex, ranging from
10468 this$0 (the immediate outer context) to
10469 access$0(access$0(...(this$0))).
10471 maybe_use_access_method returns a nonzero value if the
10472 this_arg has to be moved into the (then generated) stub
10473 argument list. In the meantime, the selected function
10474 might have be replaced by a generated stub. */
10476 maybe_use_access_method (is_super_init, &list, &this_arg))
10478 args = tree_cons (NULL_TREE, this_arg, args);
10479 this_arg = NULL_TREE; /* So it doesn't get chained twice */
10484 /* Merge point of all resolution schemes. If we have nothing, this
10485 is an error, already signaled */
10487 PATCH_METHOD_RETURN_ERROR ();
10489 /* Check accessibility, position the is_static flag, build and
10491 if (not_accessible_p (DECL_CONTEXT (current_function_decl), list,
10492 (primary ? TREE_TYPE (TREE_TYPE (primary)) :
10493 NULL_TREE), from_super)
10494 /* Calls to clone() on array types are permitted as a special-case. */
10495 && !is_array_clone_call)
10497 const char *const fct_name = IDENTIFIER_POINTER (DECL_NAME (list));
10498 const char *const access =
10499 accessibility_string (get_access_flags_from_decl (list));
10500 const char *const klass =
10501 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (list))));
10502 const char *const refklass =
10503 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class)));
10504 const char *const what = (DECL_CONSTRUCTOR_P (list)
10505 ? "constructor" : "method");
10506 parse_error_context (wfl,
10507 "Can't access %s %s `%s.%s' from `%s'",
10508 access, what, klass, fct_name, refklass);
10509 PATCH_METHOD_RETURN_ERROR ();
10512 /* Deprecation check: check whether the method being invoked or the
10513 instance-being-created's type are deprecated. */
10514 if (TREE_CODE (patch) == NEW_CLASS_EXPR)
10515 check_deprecation (wfl, TYPE_NAME (DECL_CONTEXT (list)));
10516 check_deprecation (wfl, list);
10518 /* If invoking a innerclass constructor, there are hidden parameters
10520 if (TREE_CODE (patch) == NEW_CLASS_EXPR
10521 && PURE_INNER_CLASS_TYPE_P (DECL_CONTEXT (list)))
10523 /* And make sure we add the accessed local variables to be saved
10524 in field aliases. */
10525 args = build_alias_initializer_parameter_list
10526 (AIPL_FUNCTION_CTOR_INVOCATION, DECL_CONTEXT (list), args, NULL);
10528 /* Secretly pass the current_this/primary as a second argument */
10529 if (primary || current_this)
10532 tree this_type = (current_this ?
10533 TREE_TYPE (TREE_TYPE (current_this)) : NULL_TREE);
10534 /* Method's (list) enclosing context */
10535 tree mec = DECL_CONTEXT (TYPE_NAME (DECL_CONTEXT (list)));
10536 /* If we have a primary, use it. */
10538 extra_arg = primary;
10539 /* The current `this' is an inner class but isn't a direct
10540 enclosing context for the inner class we're trying to
10541 create. Build an access to the proper enclosing context
10543 else if (current_this && PURE_INNER_CLASS_TYPE_P (this_type)
10544 && this_type != TREE_TYPE (mec))
10547 extra_arg = build_access_to_thisn (current_class,
10548 TREE_TYPE (mec), 0);
10549 extra_arg = java_complete_tree (extra_arg);
10551 /* Otherwise, just use the current `this' as an enclosing
10554 extra_arg = current_this;
10555 args = tree_cons (NULL_TREE, extra_arg, args);
10558 args = tree_cons (NULL_TREE, integer_zero_node, args);
10561 /* This handles the situation where a constructor invocation needs
10562 to have an enclosing context passed as a second parameter (the
10563 constructor is one of an inner class). */
10564 if ((is_super_init ||
10565 (TREE_CODE (patch) == CALL_EXPR && name == this_identifier_node))
10566 && PURE_INNER_CLASS_TYPE_P (DECL_CONTEXT (list)))
10568 tree dest = TYPE_NAME (DECL_CONTEXT (list));
10570 build_access_to_thisn (current_class, DECL_CONTEXT (dest), 0);
10571 extra_arg = java_complete_tree (extra_arg);
10572 args = tree_cons (NULL_TREE, extra_arg, args);
10575 is_static_flag = METHOD_STATIC (list);
10576 if (! is_static_flag && this_arg != NULL_TREE)
10577 args = tree_cons (NULL_TREE, this_arg, args);
10579 /* In the context of an explicit constructor invocation, we can't
10580 invoke any method relying on `this'. Exceptions are: we're
10581 invoking a static function, primary exists and is not the current
10582 this, we're creating a new object. */
10583 if (ctxp->explicit_constructor_p
10585 && (!primary || primary == current_this)
10586 && (TREE_CODE (patch) != NEW_CLASS_EXPR))
10588 parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
10589 PATCH_METHOD_RETURN_ERROR ();
10591 java_parser_context_restore_global ();
10593 *is_static = is_static_flag;
10594 /* Sometimes, we want the decl of the selected method. Such as for
10598 patch = patch_invoke (patch, list, args);
10600 /* Now is a good time to insert the call to finit$ */
10601 if (is_super_init && CLASS_HAS_FINIT_P (current_class))
10603 tree finit_parms, finit_call;
10605 /* Prepare to pass hidden parameters to finit$, if any. */
10606 finit_parms = build_alias_initializer_parameter_list
10607 (AIPL_FUNCTION_FINIT_INVOCATION, current_class, NULL_TREE, NULL);
10610 build_method_invocation (build_wfl_node (finit_identifier_node),
10613 /* Generate the code used to initialize fields declared with an
10614 initialization statement and build a compound statement along
10615 with the super constructor invocation. */
10616 CAN_COMPLETE_NORMALLY (patch) = 1;
10617 patch = build2 (COMPOUND_EXPR, void_type_node, patch,
10618 java_complete_tree (finit_call));
10623 /* Check that we're not trying to do a static reference to a method in
10624 non static method. Return 1 if it's the case, 0 otherwise. */
10627 check_for_static_method_reference (tree wfl, tree node, tree method,
10628 tree where, tree primary)
10630 if (METHOD_STATIC (current_function_decl)
10631 && !METHOD_STATIC (method) && !primary && !CALL_CONSTRUCTOR_P (node))
10633 char *fct_name = xstrdup (lang_printable_name (method, 0));
10634 parse_error_context
10635 (wfl, "Can't make static reference to method `%s %s' in class `%s'",
10636 lang_printable_name (TREE_TYPE (TREE_TYPE (method)), 0), fct_name,
10637 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (where))));
10644 /* Fix the invocation of *MDECL if necessary in the case of a
10645 invocation from an inner class. *THIS_ARG might be modified
10646 appropriately and an alternative access to *MDECL might be
10650 maybe_use_access_method (int is_super_init, tree *mdecl, tree *this_arg)
10653 tree md = *mdecl, ta = *this_arg;
10655 int non_static_context = !METHOD_STATIC (md);
10658 || DECL_CONTEXT (md) == current_class
10659 || !PURE_INNER_CLASS_TYPE_P (current_class)
10660 || DECL_FINIT_P (md)
10661 || DECL_INSTINIT_P (md))
10664 /* If we're calling a method found in an enclosing class, generate
10665 what it takes to retrieve the right this. Don't do that if we're
10666 invoking a static method. Note that if MD's type is unrelated to
10667 CURRENT_CLASS, then the current this can be used. */
10669 if (non_static_context && DECL_CONTEXT (md) != object_type_node)
10671 ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));
10672 if (inherits_from_p (ctx, DECL_CONTEXT (md)))
10674 ta = build_current_thisn (current_class);
10675 ta = build_wfl_node (ta);
10682 maybe_build_thisn_access_method (type);
10683 if (inherits_from_p (type, DECL_CONTEXT (md)))
10685 ta = build_access_to_thisn (ctx, type, 0);
10688 type = (DECL_CONTEXT (TYPE_NAME (type)) ?
10689 TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))) : NULL_TREE);
10692 ta = java_complete_tree (ta);
10695 /* We might have to use an access method to get to MD. We can
10696 break the method access rule as far as we're not generating
10698 if (METHOD_PRIVATE (md) && flag_emit_class_files)
10700 md = build_outer_method_access_method (md);
10707 /* Returning a nonzero value indicates we were doing a non static
10708 method invocation that is now a static invocation. It will have
10709 callee displace `this' to insert it in the regular argument
10711 return (non_static_context && to_return);
10714 /* Patch an invoke expression METHOD and ARGS, based on its invocation
10718 patch_invoke (tree patch, tree method, tree args)
10721 tree original_call, t, ta;
10722 tree check = NULL_TREE;
10724 /* Last step for args: convert build-in types. If we're dealing with
10725 a new TYPE() type call, the first argument to the constructor
10726 isn't found in the incoming argument list, but delivered by
10728 t = TYPE_ARG_TYPES (TREE_TYPE (method));
10729 if (TREE_CODE (patch) == NEW_CLASS_EXPR)
10730 t = TREE_CHAIN (t);
10731 for (ta = args; t != end_params_node && ta;
10732 t = TREE_CHAIN (t), ta = TREE_CHAIN (ta))
10733 if (JPRIMITIVE_TYPE_P (TREE_TYPE (TREE_VALUE (ta))) &&
10734 TREE_TYPE (TREE_VALUE (ta)) != TREE_VALUE (t))
10735 TREE_VALUE (ta) = convert (TREE_VALUE (t), TREE_VALUE (ta));
10737 /* Resolve unresolved returned type issues */
10738 t = TREE_TYPE (TREE_TYPE (method));
10739 if (TREE_CODE (t) == POINTER_TYPE && !CLASS_LOADED_P (TREE_TYPE (t)))
10740 resolve_and_layout (TREE_TYPE (t), NULL);
10742 if (flag_emit_class_files || flag_emit_xref)
10746 switch (invocation_mode (method, CALL_USING_SUPER (patch)))
10748 case INVOKE_VIRTUAL:
10749 dtable = invoke_build_dtable (0, args);
10750 func = build_invokevirtual (dtable, method);
10753 case INVOKE_NONVIRTUAL:
10754 /* If the object for the method call is null, we throw an
10755 exception. We don't do this if the object is the current
10756 method's `this'. In other cases we just rely on an
10757 optimization pass to eliminate redundant checks. */
10758 if (TREE_VALUE (args) != current_this)
10760 /* We use a save_expr here to make sure we only evaluate
10761 the new `self' expression once. */
10762 tree save_arg = save_expr (TREE_VALUE (args));
10763 TREE_VALUE (args) = save_arg;
10764 check = java_check_reference (save_arg, 1);
10766 /* Fall through. */
10769 case INVOKE_STATIC:
10771 tree signature = build_java_signature (TREE_TYPE (method));
10772 func = build_known_method_ref (method, TREE_TYPE (method),
10773 DECL_CONTEXT (method),
10778 case INVOKE_INTERFACE:
10779 dtable = invoke_build_dtable (1, args);
10780 func = build_invokeinterface (dtable, method);
10787 /* Ensure self_type is initialized, (invokestatic). FIXME */
10788 func = build1 (NOP_EXPR, build_pointer_type (TREE_TYPE (method)), func);
10791 TREE_TYPE (patch) = TREE_TYPE (TREE_TYPE (method));
10792 TREE_OPERAND (patch, 0) = func;
10793 TREE_OPERAND (patch, 1) = args;
10794 patch = check_for_builtin (method, patch);
10795 original_call = patch;
10797 /* We're processing a `new TYPE ()' form. New is called and its
10798 returned value is the first argument to the constructor. We build
10799 a COMPOUND_EXPR and use saved expression so that the overall NEW
10800 expression value is a pointer to a newly created and initialized
10802 if (TREE_CODE (original_call) == NEW_CLASS_EXPR)
10804 tree class = DECL_CONTEXT (method);
10805 tree c1, saved_new, size, new;
10808 if (flag_emit_class_files || flag_emit_xref)
10810 TREE_TYPE (patch) = build_pointer_type (class);
10813 if (!TYPE_SIZE (class))
10814 safe_layout_class (class);
10815 size = size_in_bytes (class);
10817 (class_has_finalize_method (class) ? alloc_object_node
10818 : alloc_no_finalizer_node);
10819 new = build3 (CALL_EXPR, promote_type (class),
10820 build_address_of (alloc_node),
10821 build_tree_list (NULL_TREE, build_class_ref (class)),
10823 saved_new = save_expr (new);
10824 c1 = build_tree_list (NULL_TREE, saved_new);
10825 TREE_CHAIN (c1) = TREE_OPERAND (original_call, 1);
10826 TREE_OPERAND (original_call, 1) = c1;
10827 TREE_SET_CODE (original_call, CALL_EXPR);
10828 patch = build2 (COMPOUND_EXPR, TREE_TYPE (new), patch, saved_new);
10831 /* If CHECK is set, then we are building a check to see if the object
10833 if (check != NULL_TREE)
10835 /* We have to call force_evaluation_order now because creating a
10836 COMPOUND_EXPR wraps the arg list in a way that makes it
10837 unrecognizable by force_evaluation_order later. Yuk. */
10838 patch = build2 (COMPOUND_EXPR, TREE_TYPE (patch), check,
10839 force_evaluation_order (patch));
10840 TREE_SIDE_EFFECTS (patch) = 1;
10843 /* In order to be able to modify PATCH later, we SAVE_EXPR it and
10844 put it as the first expression of a COMPOUND_EXPR. The second
10845 expression being an empty statement to be later patched if
10846 necessary. We remember a TREE_LIST (the PURPOSE is the method,
10847 the VALUE is the compound) in a hashtable and return a
10848 COMPOUND_EXPR built so that the result of the evaluation of the
10849 original PATCH node is returned. */
10850 if (STATIC_CLASS_INIT_OPT_P ()
10851 && current_function_decl && METHOD_STATIC (method))
10854 tree fndecl = current_function_decl;
10855 /* We have to call force_evaluation_order now because creating a
10856 COMPOUND_EXPR wraps the arg list in a way that makes it
10857 unrecognizable by force_evaluation_order later. Yuk. */
10858 tree save = force_evaluation_order (patch);
10859 tree type = TREE_TYPE (patch);
10861 patch = build2 (COMPOUND_EXPR, type, save, build_java_empty_stmt ());
10862 list = tree_cons (method, patch,
10863 DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (fndecl));
10865 DECL_FUNCTION_STATIC_METHOD_INVOCATION_COMPOUND (fndecl) = list;
10867 patch = build2 (COMPOUND_EXPR, type, patch, save);
10874 invocation_mode (tree method, int super)
10876 int access = get_access_flags_from_decl (method);
10879 return INVOKE_SUPER;
10881 if (access & ACC_STATIC)
10882 return INVOKE_STATIC;
10884 /* We have to look for a constructor before we handle nonvirtual
10885 calls; otherwise the constructor will look nonvirtual. */
10886 if (DECL_CONSTRUCTOR_P (method))
10887 return INVOKE_STATIC;
10889 if (access & ACC_FINAL || access & ACC_PRIVATE)
10890 return INVOKE_NONVIRTUAL;
10892 if (CLASS_FINAL (TYPE_NAME (DECL_CONTEXT (method))))
10893 return INVOKE_NONVIRTUAL;
10895 if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))))
10896 return INVOKE_INTERFACE;
10898 return INVOKE_VIRTUAL;
10901 /* Retrieve a refined list of matching methods. It covers the step
10902 15.11.2 (Compile-Time Step 2) */
10905 lookup_method_invoke (int lc, tree cl, tree class, tree name, tree arg_list)
10907 tree atl = end_params_node; /* Arg Type List */
10908 tree method, signature, list, node;
10909 const char *candidates; /* Used for error report */
10912 /* Fix the arguments */
10913 for (node = arg_list; node; node = TREE_CHAIN (node))
10915 tree current_arg = TREE_TYPE (TREE_VALUE (node));
10916 /* Non primitive type may have to be resolved */
10917 if (!JPRIMITIVE_TYPE_P (current_arg))
10918 resolve_and_layout (current_arg, NULL_TREE);
10920 if (TREE_CODE (current_arg) == RECORD_TYPE)
10921 current_arg = promote_type (current_arg);
10922 atl = tree_cons (NULL_TREE, current_arg, atl);
10925 /* Presto. If we're dealing with an anonymous class and a
10926 constructor call, generate the right constructor now, since we
10927 know the arguments' types. */
10929 if (lc && ANONYMOUS_CLASS_P (class))
10931 tree mdecl = craft_constructor (TYPE_NAME (class), atl);
10932 /* The anonymous class may have already been laid out, so make sure
10933 the new constructor is laid out here. */
10934 layout_class_method (class, CLASSTYPE_SUPER (class), mdecl, NULL_TREE);
10937 /* Find all candidates and then refine the list, searching for the
10938 most specific method. */
10939 list = find_applicable_accessible_methods_list (lc, class, name, atl);
10940 list = find_most_specific_methods_list (list);
10941 if (list && !TREE_CHAIN (list))
10942 return TREE_VALUE (list);
10944 /* Issue an error. List candidates if any. Candidates are listed
10945 only if accessible (non accessible methods may end-up here for
10946 the sake of a better error report). */
10951 obstack_grow (&temporary_obstack, ". Candidates are:\n", 18);
10952 for (current = list; current; current = TREE_CHAIN (current))
10954 tree cm = TREE_VALUE (current);
10955 char string [4096];
10956 if (!cm || not_accessible_p (class, cm, NULL_TREE, 0))
10959 (string, " `%s' in `%s'%s",
10960 get_printable_method_name (cm),
10961 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (cm)))),
10962 (TREE_CHAIN (current) ? "\n" : ""));
10963 obstack_grow (&temporary_obstack, string, strlen (string));
10965 obstack_1grow (&temporary_obstack, '\0');
10966 candidates = obstack_finish (&temporary_obstack);
10968 /* Issue the error message */
10969 method = make_node (FUNCTION_TYPE);
10970 TYPE_ARG_TYPES (method) = atl;
10971 signature = build_java_argument_signature (method);
10972 dup = xstrdup (lang_printable_name (class, 0));
10973 parse_error_context (cl, "Can't find %s `%s(%s)' in type `%s'%s",
10974 (lc ? "constructor" : "method"),
10975 (lc ? dup : IDENTIFIER_POINTER (name)),
10976 IDENTIFIER_POINTER (signature), dup,
10977 (candidates ? candidates : ""));
10982 /* 15.11.2.1: Find Methods that are Applicable and Accessible. LC is 1
10983 when we're looking for a constructor. */
10986 find_applicable_accessible_methods_list (int lc, tree class, tree name,
10989 static htab_t searched_classes;
10990 static int search_not_done = 0;
10991 tree list = NULL_TREE, all_list = NULL_TREE;
10995 /* Check the hash table to determine if this class has been searched
10997 if (searched_classes)
10999 if (htab_find (searched_classes, class) != NULL)
11004 searched_classes = htab_create (10, htab_hash_pointer,
11005 htab_eq_pointer, NULL);
11009 *htab_find_slot (searched_classes, class, INSERT) = class;
11011 if (!CLASS_LOADED_P (class))
11013 load_class (class, 1);
11014 safe_layout_class (class);
11017 /* Search interfaces */
11018 if (TREE_CODE (TYPE_NAME (class)) == TYPE_DECL
11019 && CLASS_INTERFACE (TYPE_NAME (class)))
11021 search_applicable_methods_list (lc, TYPE_METHODS (class),
11022 name, arglist, &list, &all_list);
11023 for (i = 1; BINFO_BASE_ITERATE (TYPE_BINFO (class), i, base_binfo); i++)
11025 tree t = BINFO_TYPE (base_binfo);
11028 rlist = find_applicable_accessible_methods_list (lc, t, name,
11030 list = chainon (rlist, list);
11033 /* Search classes */
11036 search_applicable_methods_list (lc, TYPE_METHODS (class),
11037 name, arglist, &list, &all_list);
11039 /* When looking finit$, class$ or instinit$, we turn LC to 1 so
11040 that we only search in class. Note that we should have found
11041 something at this point. */
11042 if (ID_FINIT_P (name) || ID_CLASSDOLLAR_P (name) || ID_INSTINIT_P (name))
11049 /* We must search all interfaces of this class */
11053 BINFO_BASE_ITERATE (TYPE_BINFO (class), i, base_binfo); i++)
11055 tree t = BINFO_TYPE (base_binfo);
11056 if (t != object_type_node)
11059 = find_applicable_accessible_methods_list (lc, t,
11061 list = chainon (rlist, list);
11066 /* Search superclass */
11067 if (!lc && CLASSTYPE_SUPER (class) != NULL_TREE)
11070 class = CLASSTYPE_SUPER (class);
11071 rlist = find_applicable_accessible_methods_list (lc, class,
11073 list = chainon (rlist, list);
11079 /* We're done. Reset the searched classes list and finally search
11080 java.lang.Object if it wasn't searched already. */
11081 if (!search_not_done)
11084 && TYPE_METHODS (object_type_node)
11085 && htab_find (searched_classes, object_type_node) == NULL)
11087 search_applicable_methods_list (lc,
11088 TYPE_METHODS (object_type_node),
11089 name, arglist, &list, &all_list);
11091 htab_delete (searched_classes);
11092 searched_classes = NULL;
11095 /* Either return the list obtained or all selected (but
11096 inaccessible) methods for better error report. */
11097 return (!list ? all_list : list);
11100 /* Effectively search for the appropriate method in method */
11103 search_applicable_methods_list (int lc, tree method, tree name, tree arglist,
11104 tree *list, tree *all_list)
11106 for (; method; method = TREE_CHAIN (method))
11108 /* When dealing with constructor, stop here, otherwise search
11110 if (lc && !DECL_CONSTRUCTOR_P (method))
11112 else if (!lc && (DECL_CONSTRUCTOR_P (method)
11113 || (DECL_NAME (method) != name)))
11116 if (argument_types_convertible (method, arglist))
11118 /* Retain accessible methods only */
11119 if (!not_accessible_p (DECL_CONTEXT (current_function_decl),
11120 method, NULL_TREE, 0))
11121 *list = tree_cons (NULL_TREE, method, *list);
11123 /* Also retain all selected method here */
11124 *all_list = tree_cons (NULL_TREE, method, *list);
11129 /* 15.11.2.2 Choose the Most Specific Method */
11132 find_most_specific_methods_list (tree list)
11135 int abstract, candidates;
11136 tree current, new_list = NULL_TREE;
11137 for (current = list; current; current = TREE_CHAIN (current))
11140 DECL_SPECIFIC_COUNT (TREE_VALUE (current)) = 0;
11142 for (method = list; method; method = TREE_CHAIN (method))
11144 tree method_v, current_v;
11145 /* Don't test a method against itself */
11146 if (method == current)
11149 method_v = TREE_VALUE (method);
11150 current_v = TREE_VALUE (current);
11152 /* Compare arguments and location where methods where declared */
11153 if (argument_types_convertible (method_v, current_v))
11155 if (valid_method_invocation_conversion_p
11156 (DECL_CONTEXT (method_v), DECL_CONTEXT (current_v))
11157 || (INNER_CLASS_TYPE_P (DECL_CONTEXT (current_v))
11158 && enclosing_context_p (DECL_CONTEXT (method_v),
11159 DECL_CONTEXT (current_v))))
11161 int v = (DECL_SPECIFIC_COUNT (current_v) +=
11162 (INNER_CLASS_TYPE_P (DECL_CONTEXT (current_v)) ? 2 : 1));
11163 max = (v > max ? v : max);
11169 /* Review the list and select the maximally specific methods */
11170 for (current = list, abstract = -1, candidates = -1;
11171 current; current = TREE_CHAIN (current))
11172 if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
11174 new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);
11175 abstract += (METHOD_ABSTRACT (TREE_VALUE (current)) ? 1 : 0);
11179 /* If we have several and they're all abstract, just pick the
11181 if (candidates > 0 && candidates == abstract)
11183 /* FIXME: merge the throws clauses. There is no convenient way
11184 to do this in gcj right now, since ideally we'd like to
11185 introduce a new METHOD_DECL here, but that is really not
11187 new_list = nreverse (new_list);
11188 TREE_CHAIN (new_list) = NULL_TREE;
11192 /* We have several (we couldn't find a most specific), all but one
11193 are abstract, we pick the only non abstract one. */
11194 if (candidates > 0 && (candidates == abstract+1))
11196 for (current = new_list; current; current = TREE_CHAIN (current))
11197 if (!METHOD_ABSTRACT (TREE_VALUE (current)))
11199 TREE_CHAIN (current) = NULL_TREE;
11200 new_list = current;
11204 /* If we can't find one, lower expectations and try to gather multiple
11205 maximally specific methods */
11206 while (!new_list && max)
11210 if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
11211 new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);
11218 /* Make sure that the type of each M2_OR_ARGLIST arguments can be
11219 converted by method invocation conversion (5.3) to the type of the
11220 corresponding parameter of M1. Implementation expects M2_OR_ARGLIST
11221 to change less often than M1. */
11223 static GTY(()) tree m2_arg_value;
11224 static GTY(()) tree m2_arg_cache;
11227 argument_types_convertible (tree m1, tree m2_or_arglist)
11229 tree m1_arg, m2_arg;
11231 SKIP_THIS_AND_ARTIFICIAL_PARMS (m1_arg, m1)
11233 if (m2_arg_value == m2_or_arglist)
11234 m2_arg = m2_arg_cache;
11237 /* M2_OR_ARGLIST can be a function DECL or a raw list of
11239 if (m2_or_arglist && TREE_CODE (m2_or_arglist) == FUNCTION_DECL)
11241 m2_arg = TYPE_ARG_TYPES (TREE_TYPE (m2_or_arglist));
11242 if (!METHOD_STATIC (m2_or_arglist))
11243 m2_arg = TREE_CHAIN (m2_arg);
11246 m2_arg = m2_or_arglist;
11248 m2_arg_value = m2_or_arglist;
11249 m2_arg_cache = m2_arg;
11252 while (m1_arg != end_params_node && m2_arg != end_params_node)
11254 resolve_and_layout (TREE_VALUE (m1_arg), NULL_TREE);
11255 if (!valid_method_invocation_conversion_p (TREE_VALUE (m1_arg),
11256 TREE_VALUE (m2_arg)))
11258 m1_arg = TREE_CHAIN (m1_arg);
11259 m2_arg = TREE_CHAIN (m2_arg);
11261 return m1_arg == end_params_node && m2_arg == end_params_node;
11264 /* Qualification routines */
11266 /* Given a name x.y.z, look up x locally. If it's found, save the
11267 decl. If it's not found, mark the name as RESOLVE_PACKAGE_NAME_P,
11268 so that we later try and load the appropriate classes. */
11270 qualify_ambiguous_name (tree id)
11274 /* We inspect the first item of the qualification list. As a sanity
11275 check, make sure that it is an identfier node. */
11276 tree qual = EXPR_WFL_QUALIFICATION (id);
11277 tree qual_wfl = QUAL_WFL (qual);
11279 if (TREE_CODE (qual_wfl) != EXPR_WITH_FILE_LOCATION)
11282 name = EXPR_WFL_NODE (qual_wfl);
11284 /* If we don't have an identifier, or we have a 'this' or 'super',
11285 then field access processing is all we need : there is nothing
11287 if (!name || TREE_CODE (name) != IDENTIFIER_NODE ||
11288 name == this_identifier_node ||
11289 name == super_identifier_node)
11292 /* If name appears within the scope of a local variable declaration
11293 or parameter declaration, or is a field within an enclosing
11294 class, then it is an expression name. Save the decl and let
11295 resolve_field_access do it's work. */
11296 if ((decl = IDENTIFIER_LOCAL_VALUE (name)) ||
11297 (decl = lookup_field_wrapper (current_class, name)))
11299 QUAL_RESOLUTION (qual) = decl;
11303 /* If name is a known class name (either declared or imported), mark
11304 us as a type name. */
11305 if ((decl = resolve_and_layout (name, NULL_TREE)))
11307 RESOLVE_TYPE_NAME_P (qual_wfl) = 1;
11308 QUAL_RESOLUTION (qual) = decl;
11311 /* Check here that NAME isn't declared by more than one
11312 type-import-on-demand declaration of the compilation unit
11313 containing NAME. FIXME */
11315 /* We couldn't find a declaration for the name. Assume for now that
11316 we have a qualified class name that needs to be loaded from an
11317 external class file. */
11319 RESOLVE_PACKAGE_NAME_P (qual_wfl) = 1;
11321 /* Propagate the qualification across other components of the
11323 for (qual = TREE_CHAIN (qual); qual;
11324 qual_wfl = QUAL_WFL (qual), qual = TREE_CHAIN (qual))
11326 if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
11327 RESOLVE_PACKAGE_NAME_P (QUAL_WFL (qual)) = 1;
11330 /* Store the global qualification for the ambiguous part of ID back
11332 if (RESOLVE_TYPE_NAME_P (qual_wfl))
11333 RESOLVE_TYPE_NAME_P (id) = 1;
11334 else if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
11335 RESOLVE_PACKAGE_NAME_P (id) = 1;
11338 /* Patch tree nodes in a function body. When a BLOCK is found, push
11339 local variable decls if present.
11340 Same as java_complete_lhs, but does resolve static finals to values. */
11343 java_complete_tree (tree node)
11345 node = java_complete_lhs (node);
11346 if (JDECL_P (node) && CLASS_FINAL_VARIABLE_P (node)
11347 && DECL_INITIAL (node) != NULL_TREE
11348 && !flag_emit_xref)
11350 tree value = fold_constant_for_init (node, node);
11351 if (value != NULL_TREE)
11358 java_stabilize_reference (tree node)
11360 if (TREE_CODE (node) == COMPOUND_EXPR)
11362 tree op0 = TREE_OPERAND (node, 0);
11363 tree op1 = TREE_OPERAND (node, 1);
11364 TREE_OPERAND (node, 0) = save_expr (op0);
11365 TREE_OPERAND (node, 1) = java_stabilize_reference (op1);
11368 return stabilize_reference (node);
11371 /* Patch tree nodes in a function body. When a BLOCK is found, push
11372 local variable decls if present.
11373 Same as java_complete_tree, but does not resolve static finals to values. */
11376 java_complete_lhs (tree node)
11378 tree nn, cn, wfl_op1, wfl_op2, wfl_op3;
11381 /* CONVERT_EXPR always has its type set, even though it needs to be
11383 if (TREE_TYPE (node) && TREE_CODE (node) != CONVERT_EXPR)
11386 /* The switch block implements cases processing container nodes
11387 first. Contained nodes are always written back. Leaves come
11388 next and return a value. */
11389 switch (TREE_CODE (node))
11393 /* 1- Block section.
11394 Set the local values on decl names so we can identify them
11395 faster when they're referenced. At that stage, identifiers
11396 are legal so we don't check for declaration errors. */
11397 for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
11399 DECL_CONTEXT (cn) = current_function_decl;
11400 IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = cn;
11402 if (BLOCK_EXPR_BODY (node) == NULL_TREE)
11403 CAN_COMPLETE_NORMALLY (node) = 1;
11406 tree stmt = BLOCK_EXPR_BODY (node);
11408 int error_seen = 0;
11409 if (TREE_CODE (stmt) == COMPOUND_EXPR)
11411 /* Re-order from (((A; B); C); ...; Z) to
11412 (A; (B; (C ; (...; Z)))).
11413 This makes it easier to scan the statements left-to-right
11414 without using recursion (which might overflow the stack
11415 if the block has many statements. */
11418 tree left = TREE_OPERAND (stmt, 0);
11419 if (TREE_CODE (left) != COMPOUND_EXPR)
11421 TREE_OPERAND (stmt, 0) = TREE_OPERAND (left, 1);
11422 TREE_OPERAND (left, 1) = stmt;
11425 BLOCK_EXPR_BODY (node) = stmt;
11428 /* Now do the actual complete, without deep recursion for
11430 ptr = &BLOCK_EXPR_BODY (node);
11431 while (TREE_CODE (*ptr) == COMPOUND_EXPR
11432 && !IS_EMPTY_STMT (TREE_OPERAND (*ptr, 1)))
11434 tree cur = java_complete_tree (TREE_OPERAND (*ptr, 0));
11435 tree *next = &TREE_OPERAND (*ptr, 1);
11436 TREE_OPERAND (*ptr, 0) = cur;
11437 if (IS_EMPTY_STMT (cur))
11439 /* Optimization; makes it easier to detect empty bodies.
11440 Most useful for <clinit> with all-constant initializer. */
11444 if (TREE_CODE (cur) == ERROR_MARK)
11446 else if (! CAN_COMPLETE_NORMALLY (cur))
11451 if (TREE_CODE (wfl_op2) == BLOCK)
11452 wfl_op2 = BLOCK_EXPR_BODY (wfl_op2);
11453 else if (TREE_CODE (wfl_op2) == COMPOUND_EXPR)
11454 wfl_op2 = TREE_OPERAND (wfl_op2, 0);
11458 if (TREE_CODE (wfl_op2) != CASE_EXPR
11459 && TREE_CODE (wfl_op2) != DEFAULT_EXPR)
11460 unreachable_stmt_error (*ptr);
11462 if (TREE_TYPE (*ptr) == NULL_TREE)
11463 TREE_TYPE (*ptr) = void_type_node;
11466 *ptr = java_complete_tree (*ptr);
11468 if (TREE_CODE (*ptr) == ERROR_MARK || error_seen > 0)
11469 return error_mark_node;
11470 CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (*ptr);
11472 /* Turn local bindings to null */
11473 for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
11474 IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = NULL_TREE;
11476 TREE_TYPE (node) = void_type_node;
11479 /* 2- They are expressions but ultimately deal with statements */
11482 wfl_op1 = TREE_OPERAND (node, 0);
11483 COMPLETE_CHECK_OP_0 (node);
11484 /* 14.19 A throw statement cannot complete normally. */
11485 CAN_COMPLETE_NORMALLY (node) = 0;
11486 return patch_throw_statement (node, wfl_op1);
11488 case SYNCHRONIZED_EXPR:
11489 wfl_op1 = TREE_OPERAND (node, 0);
11490 return patch_synchronized_statement (node, wfl_op1);
11493 return patch_try_statement (node);
11495 case TRY_FINALLY_EXPR:
11496 COMPLETE_CHECK_OP_0 (node);
11497 COMPLETE_CHECK_OP_1 (node);
11498 if (IS_EMPTY_STMT (TREE_OPERAND (node, 0)))
11499 /* Reduce try/finally nodes with an empty try block. */
11500 return TREE_OPERAND (node, 1);
11501 if (IS_EMPTY_STMT (TREE_OPERAND (node, 1)))
11502 /* Likewise for an empty finally block. */
11503 return TREE_OPERAND (node, 0);
11504 CAN_COMPLETE_NORMALLY (node)
11505 = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0))
11506 && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)));
11507 TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 0));
11510 case LABELED_BLOCK_EXPR:
11511 PUSH_LABELED_BLOCK (node);
11512 if (LABELED_BLOCK_BODY (node))
11513 COMPLETE_CHECK_OP_1 (node);
11514 TREE_TYPE (node) = void_type_node;
11515 POP_LABELED_BLOCK ();
11517 if (IS_EMPTY_STMT (LABELED_BLOCK_BODY (node)))
11519 LABELED_BLOCK_BODY (node) = NULL_TREE;
11520 CAN_COMPLETE_NORMALLY (node) = 1;
11522 else if (CAN_COMPLETE_NORMALLY (LABELED_BLOCK_BODY (node)))
11523 CAN_COMPLETE_NORMALLY (node) = 1;
11526 case EXIT_BLOCK_EXPR:
11527 /* We don't complete operand 1, because it's the return value of
11528 the EXIT_BLOCK_EXPR which doesn't exist it Java */
11529 return patch_bc_statement (node);
11532 cn = java_complete_tree (TREE_OPERAND (node, 0));
11533 if (cn == error_mark_node)
11536 /* First, the case expression must be constant. Values of final
11537 fields are accepted. */
11539 if ((TREE_CODE (cn) == COMPOUND_EXPR || TREE_CODE (cn) == COMPONENT_REF)
11540 && JDECL_P (TREE_OPERAND (cn, 1))
11541 && FIELD_FINAL (TREE_OPERAND (cn, 1))
11542 && DECL_INITIAL (TREE_OPERAND (cn, 1)))
11544 cn = fold_constant_for_init (DECL_INITIAL (TREE_OPERAND (cn, 1)),
11545 TREE_OPERAND (cn, 1));
11547 /* Accept final locals too. */
11548 else if (TREE_CODE (cn) == VAR_DECL && DECL_FINAL (cn)
11549 && DECL_INITIAL (cn))
11550 cn = fold_constant_for_init (DECL_INITIAL (cn), cn);
11552 if (!TREE_CONSTANT (cn) && !flag_emit_xref)
11554 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
11555 parse_error_context (node, "Constant expression required");
11556 return error_mark_node;
11559 nn = ctxp->current_loop;
11561 /* It must be assignable to the type of the switch expression. */
11562 if (!try_builtin_assignconv (NULL_TREE,
11563 TREE_TYPE (TREE_OPERAND (nn, 0)), cn))
11565 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
11566 parse_error_context
11568 "Incompatible type for case. Can't convert `%s' to `int'",
11569 lang_printable_name (TREE_TYPE (cn), 0));
11570 return error_mark_node;
11573 cn = fold (convert (int_type_node, cn));
11574 TREE_CONSTANT_OVERFLOW (cn) = 0;
11575 CAN_COMPLETE_NORMALLY (cn) = 1;
11577 /* Save the label on a list so that we can later check for
11579 case_label_list = tree_cons (node, cn, case_label_list);
11581 /* Multiple instance of a case label bearing the same value is
11582 checked later. The case expression is all right so far. */
11583 if (TREE_CODE (cn) == VAR_DECL)
11584 cn = DECL_INITIAL (cn);
11585 TREE_OPERAND (node, 0) = cn;
11586 TREE_TYPE (node) = void_type_node;
11587 CAN_COMPLETE_NORMALLY (node) = 1;
11588 TREE_SIDE_EFFECTS (node) = 1;
11592 nn = ctxp->current_loop;
11593 /* Only one default label is allowed per switch statement */
11594 if (SWITCH_HAS_DEFAULT (nn))
11596 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
11597 parse_error_context (wfl_operator,
11598 "Duplicate case label: `default'");
11599 return error_mark_node;
11602 SWITCH_HAS_DEFAULT (nn) = 1;
11603 TREE_TYPE (node) = void_type_node;
11604 TREE_SIDE_EFFECTS (node) = 1;
11605 CAN_COMPLETE_NORMALLY (node) = 1;
11611 /* Check whether the loop was enclosed in a labeled
11612 statement. If not, create one, insert the loop in it and
11614 nn = patch_loop_statement (node);
11616 /* Anyways, walk the body of the loop */
11617 if (TREE_CODE (node) == LOOP_EXPR)
11618 TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
11619 /* Switch statement: walk the switch expression and the cases */
11621 node = patch_switch_statement (node);
11623 if (node == error_mark_node || TREE_OPERAND (node, 0) == error_mark_node)
11624 nn = error_mark_node;
11627 TREE_TYPE (nn) = TREE_TYPE (node) = void_type_node;
11628 /* If we returned something different, that's because we
11629 inserted a label. Pop the label too. */
11632 if (CAN_COMPLETE_NORMALLY (node))
11633 CAN_COMPLETE_NORMALLY (nn) = 1;
11634 POP_LABELED_BLOCK ();
11641 TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
11642 return patch_exit_expr (node);
11646 TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
11647 if (TREE_OPERAND (node, 0) == error_mark_node)
11648 return error_mark_node;
11649 /* then-else branches */
11650 TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
11651 if (TREE_OPERAND (node, 1) == error_mark_node)
11652 return error_mark_node;
11654 /* This is a special case due to build_assertion(). When
11655 assertions are disabled we build a COND_EXPR in which
11656 Operand 1 is the body of the assertion. If that happens to
11657 be a string concatenation we'll need to patch it here. */
11658 tree patched = patch_string (TREE_OPERAND (node, 1));
11660 TREE_OPERAND (node, 1) = patched;
11662 TREE_OPERAND (node, 2) = java_complete_tree (TREE_OPERAND (node, 2));
11663 if (TREE_OPERAND (node, 2) == error_mark_node)
11664 return error_mark_node;
11665 return patch_if_else_statement (node);
11668 case CONDITIONAL_EXPR:
11670 wfl_op1 = TREE_OPERAND (node, 0);
11671 COMPLETE_CHECK_OP_0 (node);
11672 wfl_op2 = TREE_OPERAND (node, 1);
11673 COMPLETE_CHECK_OP_1 (node);
11674 wfl_op3 = TREE_OPERAND (node, 2);
11675 COMPLETE_CHECK_OP_2 (node);
11676 return patch_conditional_expr (node, wfl_op1, wfl_op2);
11678 /* 3- Expression section */
11679 case COMPOUND_EXPR:
11680 wfl_op2 = TREE_OPERAND (node, 1);
11681 TREE_OPERAND (node, 0) = nn =
11682 java_complete_tree (TREE_OPERAND (node, 0));
11683 if (IS_EMPTY_STMT (wfl_op2))
11684 CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (nn);
11687 if (! CAN_COMPLETE_NORMALLY (nn) && TREE_CODE (nn) != ERROR_MARK)
11689 /* An unreachable condition in a do-while statement
11690 is *not* (technically) an unreachable statement. */
11692 if (TREE_CODE (nn) == EXPR_WITH_FILE_LOCATION)
11693 nn = EXPR_WFL_NODE (nn);
11694 /* NN can be NULL_TREE exactly when UPDATE is, in
11695 finish_for_loop. */
11696 if (nn != NULL_TREE && TREE_CODE (nn) != EXIT_EXPR)
11698 SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
11699 if (SUPPRESS_UNREACHABLE_ERROR (nn))
11701 /* Perhaps this warning should have an
11702 associated flag. The code being compiled is
11703 pedantically correct, but useless. */
11704 parse_warning_context (wfl_operator,
11705 "Unreachable statement");
11708 parse_error_context (wfl_operator,
11709 "Unreachable statement");
11712 TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
11713 if (TREE_OPERAND (node, 1) == error_mark_node)
11714 return error_mark_node;
11715 /* Even though we might allow the case where the first
11716 operand doesn't return normally, we still should compute
11717 CAN_COMPLETE_NORMALLY correctly. */
11718 CAN_COMPLETE_NORMALLY (node)
11719 = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0))
11720 && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)));
11722 TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 1));
11726 /* CAN_COMPLETE_NORMALLY (node) = 0; */
11727 return patch_return (node);
11729 case EXPR_WITH_FILE_LOCATION:
11730 if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
11731 || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
11734 node = resolve_expression_name (node, NULL);
11735 if (node == error_mark_node)
11737 /* Keep line number information somewhere were it doesn't
11738 disrupt the completion process. */
11739 if (flag_emit_xref && TREE_CODE (node) != CALL_EXPR)
11741 EXPR_WFL_NODE (wfl) = TREE_OPERAND (node, 1);
11742 TREE_OPERAND (node, 1) = wfl;
11744 CAN_COMPLETE_NORMALLY (node) = 1;
11749 int save_lineno = input_line;
11750 input_line = EXPR_WFL_LINENO (node);
11751 body = java_complete_tree (EXPR_WFL_NODE (node));
11752 input_line = save_lineno;
11753 EXPR_WFL_NODE (node) = body;
11754 TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (body);
11755 CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (body);
11756 if (IS_EMPTY_STMT (body) || TREE_CONSTANT (body))
11758 /* Makes it easier to constant fold, detect empty bodies. */
11761 if (body == error_mark_node)
11763 /* Its important for the evaluation of assignment that
11764 this mark on the TREE_TYPE is propagated. */
11765 TREE_TYPE (node) = error_mark_node;
11766 return error_mark_node;
11769 TREE_TYPE (node) = TREE_TYPE (EXPR_WFL_NODE (node));
11774 case NEW_ARRAY_EXPR:
11775 /* Patch all the dimensions */
11777 for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
11779 int location = EXPR_WFL_LINECOL (TREE_VALUE (cn));
11780 tree dim = convert (int_type_node,
11781 java_complete_tree (TREE_VALUE (cn)));
11782 if (dim == error_mark_node)
11789 TREE_VALUE (cn) = dim;
11790 /* Setup the location of the current dimension, for
11791 later error report. */
11792 TREE_PURPOSE (cn) =
11793 build_expr_wfl (NULL_TREE, input_filename, 0, 0);
11794 EXPR_WFL_LINECOL (TREE_PURPOSE (cn)) = location;
11797 /* They complete the array creation expression, if no errors
11799 CAN_COMPLETE_NORMALLY (node) = 1;
11800 return (flag ? error_mark_node
11801 : force_evaluation_order (patch_newarray (node)));
11803 case NEW_ANONYMOUS_ARRAY_EXPR:
11804 /* Create the array type if necessary. */
11805 if (ANONYMOUS_ARRAY_DIMS_SIG (node))
11807 tree type = ANONYMOUS_ARRAY_BASE_TYPE (node);
11808 if (!(type = resolve_type_during_patch (type)))
11809 return error_mark_node;
11810 type = build_array_from_name (type, NULL_TREE,
11811 ANONYMOUS_ARRAY_DIMS_SIG (node), NULL);
11812 ANONYMOUS_ARRAY_BASE_TYPE (node) = build_pointer_type (type);
11814 node = patch_new_array_init (ANONYMOUS_ARRAY_BASE_TYPE (node),
11815 ANONYMOUS_ARRAY_INITIALIZER (node));
11816 if (node == error_mark_node)
11817 return error_mark_node;
11818 CAN_COMPLETE_NORMALLY (node) = 1;
11821 case NEW_CLASS_EXPR:
11823 /* Complete function's argument(s) first */
11824 if (complete_function_arguments (node))
11825 return error_mark_node;
11828 tree decl, wfl = TREE_OPERAND (node, 0);
11829 int in_this = CALL_THIS_CONSTRUCTOR_P (node);
11830 int from_super = (EXPR_WFL_NODE (TREE_OPERAND (node, 0)) ==
11831 super_identifier_node);
11833 int location = EXPR_WFL_LINECOL (node);
11835 node = patch_method_invocation (node, NULL_TREE, NULL_TREE,
11836 from_super, 0, &decl);
11837 if (node == error_mark_node)
11838 return error_mark_node;
11840 if (TREE_CODE (node) == CALL_EXPR
11841 && TREE_OPERAND (node, 1) != NULL_TREE)
11842 arguments = TREE_VALUE (TREE_OPERAND (node, 1));
11844 arguments = NULL_TREE;
11845 check_thrown_exceptions (location, decl, arguments);
11846 /* If we call this(...), register signature and positions */
11848 DECL_CONSTRUCTOR_CALLS (current_function_decl) =
11849 tree_cons (wfl, decl,
11850 DECL_CONSTRUCTOR_CALLS (current_function_decl));
11851 CAN_COMPLETE_NORMALLY (node) = 1;
11852 return force_evaluation_order (node);
11856 /* Save potential wfls */
11857 wfl_op1 = TREE_OPERAND (node, 0);
11858 TREE_OPERAND (node, 0) = nn = java_complete_lhs (wfl_op1);
11860 if (MODIFY_EXPR_FROM_INITIALIZATION_P (node)
11861 && TREE_CODE (nn) == VAR_DECL && TREE_STATIC (nn)
11862 && DECL_INITIAL (nn) != NULL_TREE)
11866 value = fold_constant_for_init (nn, nn);
11868 /* When we have a primitype type, or a string and we're not
11869 emitting a class file, we actually don't want to generate
11870 anything for the assignment. */
11871 if (value != NULL_TREE &&
11872 (JPRIMITIVE_TYPE_P (TREE_TYPE (value)) ||
11873 (TREE_TYPE (value) == string_ptr_type_node &&
11874 ! flag_emit_class_files)))
11876 /* Prepare node for patch_assignment */
11877 TREE_OPERAND (node, 1) = value;
11878 /* Call patch assignment to verify the assignment */
11879 if (patch_assignment (node, wfl_op1) == error_mark_node)
11880 return error_mark_node;
11881 /* Set DECL_INITIAL properly (a conversion might have
11882 been decided by patch_assignment) and return the
11883 empty statement. */
11886 tree patched = patch_string (TREE_OPERAND (node, 1));
11888 DECL_INITIAL (nn) = patched;
11890 DECL_INITIAL (nn) = TREE_OPERAND (node, 1);
11891 DECL_FIELD_FINAL_IUD (nn) = 1;
11892 return build_java_empty_stmt ();
11895 if (! flag_emit_class_files)
11896 DECL_INITIAL (nn) = NULL_TREE;
11898 wfl_op2 = TREE_OPERAND (node, 1);
11900 if (TREE_OPERAND (node, 0) == error_mark_node)
11901 return error_mark_node;
11903 flag = COMPOUND_ASSIGN_P (wfl_op2);
11906 /* This might break when accessing outer field from inner
11907 class. TESTME, FIXME */
11908 tree lvalue = java_stabilize_reference (TREE_OPERAND (node, 0));
11910 /* Hand stabilize the lhs on both places */
11911 TREE_OPERAND (node, 0) = lvalue;
11912 TREE_OPERAND (TREE_OPERAND (node, 1), 0) =
11913 (flag_emit_class_files ? lvalue : save_expr (lvalue));
11915 /* 15.25.2.a: Left hand is not an array access. FIXME */
11916 /* Now complete the RHS. We write it back later on. */
11917 nn = java_complete_tree (TREE_OPERAND (node, 1));
11919 if ((cn = patch_string (nn)))
11922 /* The last part of the rewrite for E1 op= E2 is to have
11923 E1 = (T)(E1 op E2), with T being the type of E1. */
11924 nn = java_complete_tree (build_cast (EXPR_WFL_LINECOL (wfl_op2),
11925 TREE_TYPE (lvalue), nn));
11927 /* If the assignment is compound and has reference type,
11928 then ensure the LHS has type String and nothing else. */
11929 if (JREFERENCE_TYPE_P (TREE_TYPE (lvalue))
11930 && ! JSTRING_TYPE_P (TREE_TYPE (lvalue)))
11931 parse_error_context (wfl_op2,
11932 "Incompatible type for `+='. Can't convert `%s' to `java.lang.String'",
11933 lang_printable_name (TREE_TYPE (lvalue), 0));
11935 /* 15.25.2.b: Left hand is an array access. FIXME */
11938 /* If we're about to patch a NEW_ARRAY_INIT, we call a special
11939 function to complete this RHS. Note that a NEW_ARRAY_INIT
11940 might have been already fully expanded if created as a result
11941 of processing an anonymous array initializer. We avoid doing
11942 the operation twice by testing whether the node already bears
11944 else if (TREE_CODE (wfl_op2) == NEW_ARRAY_INIT && !TREE_TYPE (wfl_op2))
11945 nn = patch_new_array_init (TREE_TYPE (TREE_OPERAND (node, 0)),
11946 TREE_OPERAND (node, 1));
11947 /* Otherwise we simply complete the RHS */
11949 nn = java_complete_tree (TREE_OPERAND (node, 1));
11951 if (nn == error_mark_node)
11952 return error_mark_node;
11954 /* Write back the RHS as we evaluated it. */
11955 TREE_OPERAND (node, 1) = nn;
11957 /* In case we're handling = with a String as a RHS, we need to
11958 produce a String out of the RHS (it might still be a
11959 STRING_CST or a StringBuffer at this stage */
11960 if ((nn = patch_string (TREE_OPERAND (node, 1))))
11961 TREE_OPERAND (node, 1) = nn;
11963 if ((nn = outer_field_access_fix (wfl_op1, TREE_OPERAND (node, 0),
11964 TREE_OPERAND (node, 1))))
11966 /* We return error_mark_node if outer_field_access_fix
11967 detects we write into a final. */
11968 if (nn == error_mark_node)
11969 return error_mark_node;
11974 node = patch_assignment (node, wfl_op1);
11975 if (node == error_mark_node)
11976 return error_mark_node;
11977 /* Reorganize the tree if necessary. */
11978 if (flag && (!JREFERENCE_TYPE_P (TREE_TYPE (node))
11979 || JSTRING_P (TREE_TYPE (node))))
11980 node = java_refold (node);
11983 /* Seek to set DECL_INITIAL to a proper value, since it might have
11984 undergone a conversion in patch_assignment. We do that only when
11985 it's necessary to have DECL_INITIAL properly set. */
11986 nn = TREE_OPERAND (node, 0);
11987 if (TREE_CODE (nn) == VAR_DECL
11988 && DECL_INITIAL (nn) && CONSTANT_VALUE_P (DECL_INITIAL (nn))
11989 && FIELD_STATIC (nn) && FIELD_FINAL (nn)
11990 && (JPRIMITIVE_TYPE_P (TREE_TYPE (nn))
11991 || TREE_TYPE (nn) == string_ptr_type_node))
11992 DECL_INITIAL (nn) = TREE_OPERAND (node, 1);
11994 CAN_COMPLETE_NORMALLY (node) = 1;
12006 case TRUNC_MOD_EXPR:
12007 case TRUNC_DIV_EXPR:
12009 case TRUTH_ANDIF_EXPR:
12010 case TRUTH_ORIF_EXPR:
12017 /* Operands 0 and 1 are WFL in certain cases only. patch_binop
12018 knows how to handle those cases. */
12019 wfl_op1 = TREE_OPERAND (node, 0);
12020 wfl_op2 = TREE_OPERAND (node, 1);
12022 CAN_COMPLETE_NORMALLY (node) = 1;
12023 /* Don't complete string nodes if dealing with the PLUS operand. */
12024 if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op1))
12026 nn = java_complete_tree (wfl_op1);
12027 if (nn == error_mark_node)
12028 return error_mark_node;
12030 TREE_OPERAND (node, 0) = nn;
12032 if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op2))
12034 nn = java_complete_tree (wfl_op2);
12035 if (nn == error_mark_node)
12036 return error_mark_node;
12038 TREE_OPERAND (node, 1) = nn;
12040 return patch_binop (node, wfl_op1, wfl_op2);
12042 case INSTANCEOF_EXPR:
12043 wfl_op1 = TREE_OPERAND (node, 0);
12044 COMPLETE_CHECK_OP_0 (node);
12045 if (flag_emit_xref)
12047 TREE_TYPE (node) = boolean_type_node;
12050 return patch_binop (node, wfl_op1, TREE_OPERAND (node, 1));
12052 case UNARY_PLUS_EXPR:
12054 case TRUTH_NOT_EXPR:
12056 case PREDECREMENT_EXPR:
12057 case PREINCREMENT_EXPR:
12058 case POSTDECREMENT_EXPR:
12059 case POSTINCREMENT_EXPR:
12061 /* There are cases were wfl_op1 is a WFL. patch_unaryop knows
12062 how to handle those cases. */
12063 wfl_op1 = TREE_OPERAND (node, 0);
12064 CAN_COMPLETE_NORMALLY (node) = 1;
12065 TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
12066 if (TREE_OPERAND (node, 0) == error_mark_node)
12067 return error_mark_node;
12068 node = patch_unaryop (node, wfl_op1);
12069 CAN_COMPLETE_NORMALLY (node) = 1;
12073 /* There are cases were wfl_op1 is a WFL. patch_array_ref knows
12074 how to handle those cases. */
12075 wfl_op1 = TREE_OPERAND (node, 0);
12076 TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
12077 if (TREE_OPERAND (node, 0) == error_mark_node)
12078 return error_mark_node;
12079 if (!flag_emit_class_files && !flag_emit_xref)
12080 TREE_OPERAND (node, 0) = save_expr (TREE_OPERAND (node, 0));
12081 /* The same applies to wfl_op2 */
12082 wfl_op2 = TREE_OPERAND (node, 1);
12083 TREE_OPERAND (node, 1) = java_complete_tree (wfl_op2);
12084 if (TREE_OPERAND (node, 1) == error_mark_node)
12085 return error_mark_node;
12086 if (!flag_emit_class_files && !flag_emit_xref)
12087 TREE_OPERAND (node, 1) = save_expr (TREE_OPERAND (node, 1));
12088 return patch_array_ref (node);
12093 case COMPONENT_REF:
12094 /* The first step in the re-write of qualified name handling. FIXME.
12095 So far, this is only to support PRIMTYPE.class -> PRIMCLASS.TYPE. */
12096 TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
12097 if (TREE_CODE (TREE_OPERAND (node, 0)) == RECORD_TYPE)
12099 tree name = TREE_OPERAND (node, 1);
12100 tree field = lookup_field_wrapper (TREE_OPERAND (node, 0), name);
12101 if (field == NULL_TREE)
12103 error ("missing static field `%s'", IDENTIFIER_POINTER (name));
12104 return error_mark_node;
12106 if (! FIELD_STATIC (field))
12108 error ("not a static field `%s'", IDENTIFIER_POINTER (name));
12109 return error_mark_node;
12118 /* Can't use THIS in a static environment */
12121 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
12122 parse_error_context (wfl_operator,
12123 "Keyword `this' used outside allowed context");
12124 TREE_TYPE (node) = error_mark_node;
12125 return error_mark_node;
12127 if (ctxp->explicit_constructor_p)
12129 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
12130 parse_error_context
12131 (wfl_operator, "Can't reference `this' or `super' before the superclass constructor has been called");
12132 TREE_TYPE (node) = error_mark_node;
12133 return error_mark_node;
12135 return current_this;
12137 case CLASS_LITERAL:
12138 CAN_COMPLETE_NORMALLY (node) = 1;
12139 node = patch_incomplete_class_ref (node);
12140 if (node == error_mark_node)
12141 return error_mark_node;
12145 CAN_COMPLETE_NORMALLY (node) = 1;
12146 /* Ok: may be we have a STRING_CST or a crafted `StringBuffer'
12147 and it's time to turn it into the appropriate String object */
12148 if ((nn = patch_string (node)))
12151 internal_error ("No case for %s", tree_code_name [TREE_CODE (node)]);
12156 /* Complete function call's argument. Return a nonzero value is an
12157 error was found. */
12160 complete_function_arguments (tree node)
12165 ctxp->explicit_constructor_p += (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
12166 for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
12168 tree wfl = TREE_VALUE (cn), parm, temp;
12169 parm = java_complete_tree (wfl);
12171 if (parm == error_mark_node)
12176 /* If we have a string literal that we haven't transformed yet or a
12177 crafted string buffer, as a result of the use of the String
12178 `+' operator. Build `parm.toString()' and expand it. */
12179 if ((temp = patch_string (parm)))
12182 TREE_VALUE (cn) = parm;
12184 ctxp->explicit_constructor_p -= (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
12188 /* Sometimes (for loops and variable initialized during their
12189 declaration), we want to wrap a statement around a WFL and turn it
12193 build_debugable_stmt (int location, tree stmt)
12195 if (TREE_CODE (stmt) != EXPR_WITH_FILE_LOCATION)
12197 stmt = build_expr_wfl (stmt, input_filename, 0, 0);
12198 EXPR_WFL_LINECOL (stmt) = location;
12200 JAVA_MAYBE_GENERATE_DEBUG_INFO (stmt);
12205 build_expr_block (tree body, tree decls)
12207 tree node = make_node (BLOCK);
12208 BLOCK_EXPR_DECLS (node) = decls;
12209 BLOCK_EXPR_BODY (node) = body;
12211 TREE_TYPE (node) = TREE_TYPE (body);
12212 TREE_SIDE_EFFECTS (node) = 1;
12216 /* Create a new function block and link it appropriately to current
12217 function block chain */
12222 tree b = build_expr_block (NULL_TREE, NULL_TREE);
12224 /* Link block B supercontext to the previous block. The current
12225 function DECL is used as supercontext when enter_a_block is called
12226 for the first time for a given function. The current function body
12227 (DECL_FUNCTION_BODY) is set to be block B. */
12229 tree fndecl = current_function_decl;
12232 BLOCK_SUPERCONTEXT (b) = current_static_block;
12233 current_static_block = b;
12236 else if (!DECL_FUNCTION_BODY (fndecl))
12238 BLOCK_SUPERCONTEXT (b) = fndecl;
12239 DECL_FUNCTION_BODY (fndecl) = b;
12243 BLOCK_SUPERCONTEXT (b) = DECL_FUNCTION_BODY (fndecl);
12244 DECL_FUNCTION_BODY (fndecl) = b;
12249 /* Exit a block by changing the current function body
12250 (DECL_FUNCTION_BODY) to the current block super context, only if
12251 the block being exited isn't the method's top level one. */
12257 if (current_function_decl)
12259 b = DECL_FUNCTION_BODY (current_function_decl);
12260 if (BLOCK_SUPERCONTEXT (b) != current_function_decl)
12261 DECL_FUNCTION_BODY (current_function_decl) = BLOCK_SUPERCONTEXT (b);
12265 b = current_static_block;
12267 if (BLOCK_SUPERCONTEXT (b))
12268 current_static_block = BLOCK_SUPERCONTEXT (b);
12273 /* Lookup for NAME in the nested function's blocks, all the way up to
12274 the current toplevel one. It complies with Java's local variable
12278 lookup_name_in_blocks (tree name)
12280 tree b = GET_CURRENT_BLOCK (current_function_decl);
12282 while (b != current_function_decl)
12286 /* Paranoid sanity check. To be removed */
12287 if (TREE_CODE (b) != BLOCK)
12290 for (current = BLOCK_EXPR_DECLS (b); current;
12291 current = TREE_CHAIN (current))
12292 if (DECL_NAME (current) == name)
12294 b = BLOCK_SUPERCONTEXT (b);
12300 maybe_absorb_scoping_blocks (void)
12302 while (BLOCK_IS_IMPLICIT (GET_CURRENT_BLOCK (current_function_decl)))
12304 tree b = exit_block ();
12305 java_method_add_stmt (current_function_decl, b);
12306 SOURCE_FRONTEND_DEBUG (("Absorbing scoping block at line %d", input_line));
12311 /* This section of the source is reserved to build_* functions that
12312 are building incomplete tree nodes and the patch_* functions that
12313 are completing them. */
12315 /* Wrap a non WFL node around a WFL. */
12318 build_wfl_wrap (tree node, int location)
12320 tree wfl, node_to_insert = node;
12322 /* We want to process THIS . xxx symbolically, to keep it consistent
12323 with the way we're processing SUPER. A THIS from a primary as a
12324 different form than a SUPER. Turn THIS into something symbolic */
12325 if (TREE_CODE (node) == THIS_EXPR)
12326 node_to_insert = wfl = build_wfl_node (this_identifier_node);
12328 wfl = build_expr_wfl (NULL_TREE, ctxp->filename, 0, 0);
12330 EXPR_WFL_LINECOL (wfl) = location;
12331 EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (node_to_insert, NULL_TREE);
12335 /* Build a super() constructor invocation. Returns an empty statement if
12336 we're currently dealing with the class java.lang.Object. */
12339 build_super_invocation (tree mdecl)
12341 if (DECL_CONTEXT (mdecl) == object_type_node)
12342 return build_java_empty_stmt ();
12345 tree super_wfl = build_wfl_node (super_identifier_node);
12346 tree a = NULL_TREE, t;
12348 /* This is called after parsing is done, so the parser context
12349 won't be accurate. Set location info from current_class decl. */
12350 tree class_wfl = lookup_cl (TYPE_NAME (current_class));
12351 EXPR_WFL_LINECOL (super_wfl) = EXPR_WFL_LINECOL (class_wfl);
12353 /* If we're dealing with an anonymous class, pass the arguments
12354 of the crafted constructor along. */
12355 if (ANONYMOUS_CLASS_P (DECL_CONTEXT (mdecl)))
12357 SKIP_THIS_AND_ARTIFICIAL_PARMS (t, mdecl);
12358 for (; t != end_params_node; t = TREE_CHAIN (t))
12359 a = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (t)), a);
12361 return build_method_invocation (super_wfl, a);
12365 /* Build a SUPER/THIS qualified method invocation. */
12368 build_this_super_qualified_invocation (int use_this, tree name, tree args,
12369 int lloc, int rloc)
12373 build_wfl_node (use_this ? this_identifier_node : super_identifier_node);
12374 EXPR_WFL_LINECOL (wfl) = lloc;
12375 invok = build_method_invocation (name, args);
12376 return make_qualified_primary (wfl, invok, rloc);
12379 /* Build an incomplete CALL_EXPR node. */
12382 build_method_invocation (tree name, tree args)
12384 tree call = build3 (CALL_EXPR, NULL_TREE, name, args, NULL_TREE);
12385 TREE_SIDE_EFFECTS (call) = 1;
12386 EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
12390 /* Build an incomplete new xxx(...) node. */
12393 build_new_invocation (tree name, tree args)
12395 tree call = build3 (NEW_CLASS_EXPR, NULL_TREE, name, args, NULL_TREE);
12396 TREE_SIDE_EFFECTS (call) = 1;
12397 EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
12401 /* Build an incomplete assignment expression. */
12404 build_assignment (int op, int op_location, tree lhs, tree rhs)
12407 /* Build the corresponding binop if we deal with a Compound
12408 Assignment operator. Mark the binop sub-tree as part of a
12409 Compound Assignment expression */
12410 if (op != ASSIGN_TK)
12412 rhs = build_binop (BINOP_LOOKUP (op), op_location, lhs, rhs);
12413 COMPOUND_ASSIGN_P (rhs) = 1;
12415 assignment = build2 (MODIFY_EXPR, NULL_TREE, lhs, rhs);
12416 TREE_SIDE_EFFECTS (assignment) = 1;
12417 EXPR_WFL_LINECOL (assignment) = op_location;
12421 /* Print an INTEGER_CST node as decimal in a static buffer, and return
12422 the buffer. This is used only for string conversion. */
12424 string_convert_int_cst (tree node)
12426 /* Long.MIN_VALUE is -9223372036854775808, 20 characters. */
12427 static char buffer[21];
12429 unsigned HOST_WIDE_INT lo = TREE_INT_CST_LOW (node);
12430 unsigned HOST_WIDE_INT hi = TREE_INT_CST_HIGH (node);
12431 char *p = buffer + sizeof (buffer);
12434 unsigned HOST_WIDE_INT hibit = (((unsigned HOST_WIDE_INT) 1)
12435 << (HOST_BITS_PER_WIDE_INT - 1));
12439 /* If negative, note the fact and negate the value. */
12449 /* Divide by 10 until there are no bits left. */
12452 unsigned HOST_WIDE_INT acc = 0;
12453 unsigned HOST_WIDE_INT outhi = 0, outlo = 0;
12456 /* Use long division to compute the result and the remainder. */
12457 for (i = 0; i < 2 * HOST_BITS_PER_WIDE_INT; ++i)
12459 /* Shift a bit into accumulator. */
12464 /* Shift the value. */
12470 /* Shift the correct bit into the result. */
12472 if ((outlo & hibit))
12482 /* '0' == 060 in Java, but might not be here (think EBCDIC). */
12483 *--p = '\060' + acc;
12491 *--p = '\055'; /* '-' == 055 in Java, but might not be here. */
12496 /* Print an INTEGER_CST node in a static buffer, and return the
12497 buffer. This is used only for error handling. */
12499 print_int_node (tree node)
12501 static char buffer [80];
12502 if (TREE_CONSTANT_OVERFLOW (node))
12503 sprintf (buffer, "<overflow>");
12505 if (TREE_INT_CST_HIGH (node) == 0)
12506 sprintf (buffer, HOST_WIDE_INT_PRINT_UNSIGNED,
12507 TREE_INT_CST_LOW (node));
12508 else if (TREE_INT_CST_HIGH (node) == -1
12509 && TREE_INT_CST_LOW (node) != 0)
12510 sprintf (buffer, "-" HOST_WIDE_INT_PRINT_UNSIGNED,
12511 -TREE_INT_CST_LOW (node));
12513 sprintf (buffer, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
12514 TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
12520 /* Return 1 if an assignment to a FINAL is attempted in a non suitable
12523 /* 15.25 Assignment operators. */
12526 patch_assignment (tree node, tree wfl_op1)
12528 tree rhs = TREE_OPERAND (node, 1);
12529 tree lvalue = TREE_OPERAND (node, 0), llvalue;
12530 tree lhs_type = NULL_TREE, rhs_type, new_rhs = NULL_TREE;
12531 int error_found = 0;
12532 int lvalue_from_array = 0;
12535 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
12537 /* Lhs can be a named variable */
12538 if (JDECL_P (lvalue))
12540 lhs_type = TREE_TYPE (lvalue);
12542 /* Or Lhs can be an array access. */
12543 else if (TREE_CODE (lvalue) == ARRAY_REF)
12545 lhs_type = TREE_TYPE (lvalue);
12546 lvalue_from_array = 1;
12548 /* Or a field access */
12549 else if (TREE_CODE (lvalue) == COMPONENT_REF)
12550 lhs_type = TREE_TYPE (lvalue);
12551 /* Or a function return slot */
12552 else if (TREE_CODE (lvalue) == RESULT_DECL)
12554 /* If the return type is an integral type, then we create the
12555 RESULT_DECL with a promoted type, but we need to do these
12556 checks against the unpromoted type to ensure type safety. So
12557 here we look at the real type, not the type of the decl we
12559 lhs_type = TREE_TYPE (TREE_TYPE (current_function_decl));
12562 /* Otherwise, we might want to try to write into an optimized static
12563 final, this is an of a different nature, reported further on. */
12564 else if (TREE_CODE (wfl_op1) == EXPR_WITH_FILE_LOCATION
12565 && resolve_expression_name (wfl_op1, &llvalue))
12567 lhs_type = TREE_TYPE (lvalue);
12571 parse_error_context (wfl_op1, "Invalid left hand side of assignment");
12575 rhs_type = TREE_TYPE (rhs);
12577 /* 5.1 Try the assignment conversion for builtin type. */
12578 new_rhs = try_builtin_assignconv (wfl_op1, lhs_type, rhs);
12580 /* 5.2 If it failed, try a reference conversion */
12582 new_rhs = try_reference_assignconv (lhs_type, rhs);
12584 /* 15.25.2 If we have a compound assignment, convert RHS into the
12586 else if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
12587 new_rhs = convert (lhs_type, rhs);
12589 /* Explicit cast required. This is an error */
12592 char *t1 = xstrdup (lang_printable_name (TREE_TYPE (rhs), 0));
12593 char *t2 = xstrdup (lang_printable_name (lhs_type, 0));
12595 char operation [32]; /* Max size known */
12597 /* If the assignment is part of a declaration, we use the WFL of
12598 the declared variable to point out the error and call it a
12599 declaration problem. If the assignment is a genuine =
12600 operator, we call is a operator `=' problem, otherwise we
12601 call it an assignment problem. In both of these last cases,
12602 we use the WFL of the operator to indicate the error. */
12604 if (MODIFY_EXPR_FROM_INITIALIZATION_P (node))
12607 strcpy (operation, "declaration");
12611 wfl = wfl_operator;
12612 if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
12613 strcpy (operation, "assignment");
12614 else if (is_return)
12615 strcpy (operation, "`return'");
12617 strcpy (operation, "`='");
12620 if (!valid_cast_to_p (rhs_type, lhs_type))
12621 parse_error_context
12622 (wfl, "Incompatible type for %s. Can't convert `%s' to `%s'",
12623 operation, t1, t2);
12625 parse_error_context (wfl, "Incompatible type for %s. Explicit cast needed to convert `%s' to `%s'",
12626 operation, t1, t2);
12627 free (t1); free (t2);
12632 return error_mark_node;
12634 /* If we're processing a `return' statement, promote the actual type
12635 to the promoted type. */
12637 new_rhs = convert (TREE_TYPE (lvalue), new_rhs);
12639 /* 10.10: Array Store Exception runtime check */
12640 if (!flag_emit_class_files
12642 && lvalue_from_array
12643 && JREFERENCE_TYPE_P (TYPE_ARRAY_ELEMENT (lhs_type)))
12645 tree array, store_check, base, index_expr;
12647 /* Save RHS so that it doesn't get re-evaluated by the store check. */
12648 new_rhs = save_expr (new_rhs);
12650 /* Get the INDIRECT_REF. */
12651 array = TREE_OPERAND (TREE_OPERAND (lvalue, 0), 0);
12652 /* Get the array pointer expr. */
12653 array = TREE_OPERAND (array, 0);
12654 store_check = build_java_arraystore_check (array, new_rhs);
12656 index_expr = TREE_OPERAND (lvalue, 1);
12658 if (TREE_CODE (index_expr) == COMPOUND_EXPR)
12660 /* A COMPOUND_EXPR here is a bounds check. The bounds check must
12661 happen before the store check, so prepare to insert the store
12662 check within the second operand of the existing COMPOUND_EXPR. */
12668 index_expr = TREE_OPERAND (base, 1);
12669 TREE_OPERAND (base, 1) = build2 (COMPOUND_EXPR, TREE_TYPE (index_expr),
12670 store_check, index_expr);
12673 /* Final locals can be used as case values in switch
12674 statement. Prepare them for this eventuality. */
12675 if (TREE_CODE (lvalue) == VAR_DECL
12676 && DECL_FINAL (lvalue)
12677 && TREE_CONSTANT (new_rhs)
12678 && IDENTIFIER_LOCAL_VALUE (DECL_NAME (lvalue))
12679 && JINTEGRAL_TYPE_P (TREE_TYPE (lvalue))
12682 TREE_CONSTANT (lvalue) = 1;
12683 TREE_INVARIANT (lvalue) = 1;
12684 DECL_INITIAL (lvalue) = new_rhs;
12687 /* Copy the rhs if it's a reference. */
12688 if (! flag_check_references && ! flag_emit_class_files && optimize > 0)
12690 switch (TREE_CODE (new_rhs))
12694 case COMPONENT_REF:
12695 /* Transform a = foo.bar
12696 into a = ({int tmp; tmp = foo.bar;}).
12697 We need to ensure that if a read from memory fails
12698 because of a NullPointerException, a destination variable
12699 will remain unchanged. An explicit temporary does what
12702 If flag_check_references is set, this is unnecessary
12703 because we'll check each reference before doing any
12704 reads. If optimize is not set the result will never be
12705 written to a stack slot that contains the LHS. */
12707 tree tmp = build_decl (VAR_DECL, get_identifier ("<tmp>"),
12708 TREE_TYPE (new_rhs));
12709 tree block = make_node (BLOCK);
12711 = build2 (MODIFY_EXPR, TREE_TYPE (new_rhs), tmp, fold (new_rhs));
12712 DECL_CONTEXT (tmp) = current_function_decl;
12713 TREE_TYPE (block) = TREE_TYPE (new_rhs);
12714 BLOCK_VARS (block) = tmp;
12715 BLOCK_EXPR_BODY (block) = assignment;
12716 TREE_SIDE_EFFECTS (block) = 1;
12725 TREE_OPERAND (node, 0) = lvalue;
12726 TREE_OPERAND (node, 1) = new_rhs;
12727 TREE_TYPE (node) = lhs_type;
12731 /* Check that type SOURCE can be cast into type DEST. If the cast
12732 can't occur at all, return NULL; otherwise, return a possibly
12736 try_reference_assignconv (tree lhs_type, tree rhs)
12738 tree new_rhs = NULL_TREE;
12739 tree rhs_type = TREE_TYPE (rhs);
12741 if (!JPRIMITIVE_TYPE_P (rhs_type) && JREFERENCE_TYPE_P (lhs_type))
12743 /* `null' may be assigned to any reference type */
12744 if (rhs == null_pointer_node)
12745 new_rhs = null_pointer_node;
12746 /* Try the reference assignment conversion */
12747 else if (valid_ref_assignconv_cast_p (rhs_type, lhs_type, 0))
12749 /* This is a magic assignment that we process differently */
12750 else if (TREE_CODE (rhs) == JAVA_EXC_OBJ_EXPR)
12756 /* Check that RHS can be converted into LHS_TYPE by the assignment
12757 conversion (5.2), for the cases of RHS being a builtin type. Return
12758 NULL_TREE if the conversion fails or if because RHS isn't of a
12759 builtin type. Return a converted RHS if the conversion is possible. */
12762 try_builtin_assignconv (tree wfl_op1, tree lhs_type, tree rhs)
12764 tree new_rhs = NULL_TREE;
12765 tree rhs_type = TREE_TYPE (rhs);
12767 /* Handle boolean specially. */
12768 if (TREE_CODE (rhs_type) == BOOLEAN_TYPE
12769 || TREE_CODE (lhs_type) == BOOLEAN_TYPE)
12771 if (TREE_CODE (rhs_type) == BOOLEAN_TYPE
12772 && TREE_CODE (lhs_type) == BOOLEAN_TYPE)
12776 /* 5.1.1 Try Identity Conversion,
12777 5.1.2 Try Widening Primitive Conversion */
12778 else if (valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type))
12779 new_rhs = convert (lhs_type, rhs);
12781 /* Try a narrowing primitive conversion (5.1.3):
12782 - expression is a constant expression of type byte, short, char,
12784 - variable is byte, short or char AND
12785 - The value of the expression is representable in the type of the
12787 else if ((rhs_type == byte_type_node || rhs_type == short_type_node
12788 || rhs_type == char_type_node || rhs_type == int_type_node)
12789 && TREE_CONSTANT (rhs)
12790 && (lhs_type == byte_type_node || lhs_type == char_type_node
12791 || lhs_type == short_type_node))
12793 if (int_fits_type_p (rhs, lhs_type))
12794 new_rhs = convert (lhs_type, rhs);
12795 else if (wfl_op1) /* Might be called with a NULL */
12796 parse_warning_context
12797 (wfl_op1, "Constant expression `%s' too wide for narrowing primitive conversion to `%s'",
12798 print_int_node (rhs), lang_printable_name (lhs_type, 0));
12799 /* Reported a warning that will turn into an error further
12800 down, so we don't return */
12806 /* Return 1 if RHS_TYPE can be converted to LHS_TYPE by identity
12807 conversion (5.1.1) or widening primitive conversion (5.1.2). Return
12808 0 is the conversion test fails. This implements parts the method
12809 invocation conversion (5.3). */
12812 valid_builtin_assignconv_identity_widening_p (tree lhs_type, tree rhs_type)
12814 /* 5.1.1: This is the identity conversion part. */
12815 if (lhs_type == rhs_type)
12818 /* Reject non primitive types and boolean conversions. */
12819 if (!JNUMERIC_TYPE_P (lhs_type) || !JNUMERIC_TYPE_P (rhs_type))
12822 /* 5.1.2: widening primitive conversion. byte, even if it's smaller
12823 than a char can't be converted into a char. Short can't too, but
12824 the < test below takes care of that */
12825 if (lhs_type == char_type_node && rhs_type == byte_type_node)
12828 /* Accept all promoted type here. Note, we can't use <= in the test
12829 below, because we still need to bounce out assignments of short
12830 to char and the likes */
12831 if (lhs_type == int_type_node
12832 && (rhs_type == promoted_byte_type_node
12833 || rhs_type == promoted_short_type_node
12834 || rhs_type == promoted_char_type_node
12835 || rhs_type == promoted_boolean_type_node))
12838 /* From here, an integral is widened if its precision is smaller
12839 than the precision of the LHS or if the LHS is a floating point
12840 type, or the RHS is a float and the RHS a double. */
12841 if ((JINTEGRAL_TYPE_P (rhs_type) && JINTEGRAL_TYPE_P (lhs_type)
12842 && (TYPE_PRECISION (rhs_type) < TYPE_PRECISION (lhs_type)))
12843 || (JINTEGRAL_TYPE_P (rhs_type) && JFLOAT_TYPE_P (lhs_type))
12844 || (rhs_type == float_type_node && lhs_type == double_type_node))
12850 /* Check that something of SOURCE type can be assigned or cast to
12851 something of DEST type at runtime. Return 1 if the operation is
12852 valid, 0 otherwise. If CAST is set to 1, we're treating the case
12853 were SOURCE is cast into DEST, which borrows a lot of the
12854 assignment check. */
12857 valid_ref_assignconv_cast_p (tree source, tree dest, int cast)
12859 /* SOURCE or DEST might be null if not from a declared entity. */
12860 if (!source || !dest)
12862 if (JNULLP_TYPE_P (source))
12864 if (TREE_CODE (source) == POINTER_TYPE)
12865 source = TREE_TYPE (source);
12866 if (TREE_CODE (dest) == POINTER_TYPE)
12867 dest = TREE_TYPE (dest);
12869 /* If source and dest are being compiled from bytecode, they may need to
12871 if (CLASS_P (source) && !CLASS_LOADED_P (source))
12873 load_class (source, 1);
12874 safe_layout_class (source);
12876 if (CLASS_P (dest) && !CLASS_LOADED_P (dest))
12878 load_class (dest, 1);
12879 safe_layout_class (dest);
12882 /* Case where SOURCE is a class type */
12883 if (TYPE_CLASS_P (source))
12885 if (TYPE_CLASS_P (dest))
12886 return (source == dest
12887 || inherits_from_p (source, dest)
12888 || (cast && inherits_from_p (dest, source)));
12889 if (TYPE_INTERFACE_P (dest))
12891 /* If doing a cast and SOURCE is final, the operation is
12892 always correct a compile time (because even if SOURCE
12893 does not implement DEST, a subclass of SOURCE might). */
12894 if (cast && !CLASS_FINAL (TYPE_NAME (source)))
12896 /* Otherwise, SOURCE must implement DEST */
12897 return interface_of_p (dest, source);
12899 /* DEST is an array, cast permitted if SOURCE is of Object type */
12900 return (cast && source == object_type_node ? 1 : 0);
12902 if (TYPE_INTERFACE_P (source))
12904 if (TYPE_CLASS_P (dest))
12906 /* If not casting, DEST must be the Object type */
12908 return dest == object_type_node;
12909 /* We're doing a cast. The cast is always valid is class
12910 DEST is not final, otherwise, DEST must implement SOURCE */
12911 else if (!CLASS_FINAL (TYPE_NAME (dest)))
12914 return interface_of_p (source, dest);
12916 if (TYPE_INTERFACE_P (dest))
12918 /* If doing a cast, then if SOURCE and DEST contain method
12919 with the same signature but different return type, then
12920 this is a (compile time) error */
12923 tree method_source, method_dest;
12927 for (method_source = TYPE_METHODS (source); method_source;
12928 method_source = TREE_CHAIN (method_source))
12931 build_java_argument_signature (TREE_TYPE (method_source));
12932 source_type = TREE_TYPE (TREE_TYPE (method_source));
12933 source_name = DECL_NAME (method_source);
12934 for (method_dest = TYPE_METHODS (dest);
12935 method_dest; method_dest = TREE_CHAIN (method_dest))
12937 build_java_argument_signature (TREE_TYPE (method_dest))
12938 && source_name == DECL_NAME (method_dest)
12939 && source_type != TREE_TYPE (TREE_TYPE (method_dest)))
12945 return source == dest || interface_of_p (dest, source);
12951 && (DECL_NAME (TYPE_NAME (source))
12952 == java_lang_cloneable_identifier_node
12953 || (DECL_NAME (TYPE_NAME (source))
12954 == java_io_serializable_identifier_node)));
12957 if (TYPE_ARRAY_P (source))
12959 if (TYPE_CLASS_P (dest))
12960 return dest == object_type_node;
12961 /* Can't cast an array to an interface unless the interface is
12962 java.lang.Cloneable or java.io.Serializable. */
12963 if (TYPE_INTERFACE_P (dest))
12964 return (DECL_NAME (TYPE_NAME (dest))
12965 == java_lang_cloneable_identifier_node
12966 || (DECL_NAME (TYPE_NAME (dest))
12967 == java_io_serializable_identifier_node));
12970 tree source_element_type = TYPE_ARRAY_ELEMENT (source);
12971 tree dest_element_type = TYPE_ARRAY_ELEMENT (dest);
12973 /* In case of severe errors, they turn out null */
12974 if (!dest_element_type || !source_element_type)
12976 if (source_element_type == dest_element_type)
12978 return valid_ref_assignconv_cast_p (source_element_type,
12979 dest_element_type, cast);
12987 valid_cast_to_p (tree source, tree dest)
12989 if (TREE_CODE (source) == POINTER_TYPE)
12990 source = TREE_TYPE (source);
12991 if (TREE_CODE (dest) == POINTER_TYPE)
12992 dest = TREE_TYPE (dest);
12994 if (TREE_CODE (source) == RECORD_TYPE && TREE_CODE (dest) == RECORD_TYPE)
12995 return valid_ref_assignconv_cast_p (source, dest, 1);
12997 else if (JNUMERIC_TYPE_P (source) && JNUMERIC_TYPE_P (dest))
13000 else if (TREE_CODE (source) == BOOLEAN_TYPE
13001 && TREE_CODE (dest) == BOOLEAN_TYPE)
13008 do_unary_numeric_promotion (tree arg)
13010 tree type = TREE_TYPE (arg);
13011 if ((TREE_CODE (type) == INTEGER_TYPE && TYPE_PRECISION (type) < 32)
13012 || TREE_CODE (type) == CHAR_TYPE)
13013 arg = convert (int_type_node, arg);
13017 /* Return a nonzero value if SOURCE can be converted into DEST using
13018 the method invocation conversion rule (5.3). */
13020 valid_method_invocation_conversion_p (tree dest, tree source)
13022 return ((JPRIMITIVE_TYPE_P (source) && JPRIMITIVE_TYPE_P (dest)
13023 && valid_builtin_assignconv_identity_widening_p (dest, source))
13024 || ((JREFERENCE_TYPE_P (source) || JNULLP_TYPE_P (source))
13025 && (JREFERENCE_TYPE_P (dest) || JNULLP_TYPE_P (dest))
13026 && valid_ref_assignconv_cast_p (source, dest, 0)));
13029 /* Build an incomplete binop expression. */
13032 build_binop (enum tree_code op, int op_location, tree op1, tree op2)
13034 tree binop = build2 (op, NULL_TREE, op1, op2);
13035 TREE_SIDE_EFFECTS (binop) = 1;
13036 /* Store the location of the operator, for better error report. The
13037 string of the operator will be rebuild based on the OP value. */
13038 EXPR_WFL_LINECOL (binop) = op_location;
13042 /* Build the string of the operator retained by NODE. If NODE is part
13043 of a compound expression, add an '=' at the end of the string. This
13044 function is called when an error needs to be reported on an
13045 operator. The string is returned as a pointer to a static character
13049 operator_string (tree node)
13051 #define BUILD_OPERATOR_STRING(S) \
13053 sprintf (buffer, "%s%s", S, (COMPOUND_ASSIGN_P (node) ? "=" : "")); \
13057 static char buffer [10];
13058 switch (TREE_CODE (node))
13060 case MULT_EXPR: BUILD_OPERATOR_STRING ("*");
13061 case RDIV_EXPR: BUILD_OPERATOR_STRING ("/");
13062 case TRUNC_MOD_EXPR: BUILD_OPERATOR_STRING ("%");
13063 case PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
13064 case MINUS_EXPR: BUILD_OPERATOR_STRING ("-");
13065 case LSHIFT_EXPR: BUILD_OPERATOR_STRING ("<<");
13066 case RSHIFT_EXPR: BUILD_OPERATOR_STRING (">>");
13067 case URSHIFT_EXPR: BUILD_OPERATOR_STRING (">>>");
13068 case BIT_AND_EXPR: BUILD_OPERATOR_STRING ("&");
13069 case BIT_XOR_EXPR: BUILD_OPERATOR_STRING ("^");
13070 case BIT_IOR_EXPR: BUILD_OPERATOR_STRING ("|");
13071 case TRUTH_ANDIF_EXPR: BUILD_OPERATOR_STRING ("&&");
13072 case TRUTH_ORIF_EXPR: BUILD_OPERATOR_STRING ("||");
13073 case EQ_EXPR: BUILD_OPERATOR_STRING ("==");
13074 case NE_EXPR: BUILD_OPERATOR_STRING ("!=");
13075 case GT_EXPR: BUILD_OPERATOR_STRING (">");
13076 case GE_EXPR: BUILD_OPERATOR_STRING (">=");
13077 case LT_EXPR: BUILD_OPERATOR_STRING ("<");
13078 case LE_EXPR: BUILD_OPERATOR_STRING ("<=");
13079 case UNARY_PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
13080 case NEGATE_EXPR: BUILD_OPERATOR_STRING ("-");
13081 case TRUTH_NOT_EXPR: BUILD_OPERATOR_STRING ("!");
13082 case BIT_NOT_EXPR: BUILD_OPERATOR_STRING ("~");
13083 case PREINCREMENT_EXPR: /* Fall through */
13084 case POSTINCREMENT_EXPR: BUILD_OPERATOR_STRING ("++");
13085 case PREDECREMENT_EXPR: /* Fall through */
13086 case POSTDECREMENT_EXPR: BUILD_OPERATOR_STRING ("--");
13088 internal_error ("unregistered operator %s",
13089 tree_code_name [TREE_CODE (node)]);
13092 #undef BUILD_OPERATOR_STRING
13095 /* Return 1 if VAR_ACCESS1 is equivalent to VAR_ACCESS2. */
13098 java_decl_equiv (tree var_acc1, tree var_acc2)
13100 if (JDECL_P (var_acc1))
13101 return (var_acc1 == var_acc2);
13103 return (TREE_CODE (var_acc1) == COMPONENT_REF
13104 && TREE_CODE (var_acc2) == COMPONENT_REF
13105 && TREE_OPERAND (TREE_OPERAND (var_acc1, 0), 0)
13106 == TREE_OPERAND (TREE_OPERAND (var_acc2, 0), 0)
13107 && TREE_OPERAND (var_acc1, 1) == TREE_OPERAND (var_acc2, 1));
13110 /* Return a nonzero value if CODE is one of the operators that can be
13111 used in conjunction with the `=' operator in a compound assignment. */
13114 binop_compound_p (enum tree_code code)
13117 for (i = 0; i < BINOP_COMPOUND_CANDIDATES; i++)
13118 if (binop_lookup [i] == code)
13121 return i < BINOP_COMPOUND_CANDIDATES;
13124 /* Reorganize after a fold to get SAVE_EXPR to generate what we want. */
13127 java_refold (tree t)
13129 tree c, b, ns, decl;
13131 if (TREE_CODE (t) != MODIFY_EXPR)
13134 c = TREE_OPERAND (t, 1);
13135 if (! (c && TREE_CODE (c) == COMPOUND_EXPR
13136 && TREE_CODE (TREE_OPERAND (c, 0)) == MODIFY_EXPR
13137 && binop_compound_p (TREE_CODE (TREE_OPERAND (c, 1)))))
13140 /* Now the left branch of the binary operator. */
13141 b = TREE_OPERAND (TREE_OPERAND (c, 1), 0);
13142 if (! (b && TREE_CODE (b) == NOP_EXPR
13143 && TREE_CODE (TREE_OPERAND (b, 0)) == SAVE_EXPR))
13146 ns = TREE_OPERAND (TREE_OPERAND (b, 0), 0);
13147 if (! (ns && TREE_CODE (ns) == NOP_EXPR
13148 && TREE_CODE (TREE_OPERAND (ns, 0)) == SAVE_EXPR))
13151 decl = TREE_OPERAND (TREE_OPERAND (ns, 0), 0);
13152 if ((JDECL_P (decl) || TREE_CODE (decl) == COMPONENT_REF)
13153 /* It's got to be the an equivalent decl */
13154 && java_decl_equiv (decl, TREE_OPERAND (TREE_OPERAND (c, 0), 0)))
13156 /* Shorten the NOP_EXPR/SAVE_EXPR path. */
13157 TREE_OPERAND (TREE_OPERAND (c, 1), 0) = TREE_OPERAND (ns, 0);
13158 /* Substitute the COMPOUND_EXPR by the BINOP_EXPR */
13159 TREE_OPERAND (t, 1) = TREE_OPERAND (c, 1);
13160 /* Change the right part of the BINOP_EXPR */
13161 TREE_OPERAND (TREE_OPERAND (t, 1), 1) = TREE_OPERAND (c, 0);
13167 /* Binary operators (15.16 up to 15.18). We return error_mark_node on
13168 errors but we modify NODE so that it contains the type computed
13169 according to the expression, when it's fixed. Otherwise, we write
13170 error_mark_node as the type. It allows us to further the analysis
13171 of remaining nodes and detects more errors in certain cases. */
13174 patch_binop (tree node, tree wfl_op1, tree wfl_op2)
13176 tree op1 = TREE_OPERAND (node, 0);
13177 tree op2 = TREE_OPERAND (node, 1);
13178 tree op1_type = TREE_TYPE (op1);
13179 tree op2_type = TREE_TYPE (op2);
13180 tree prom_type = NULL_TREE, cn;
13181 enum tree_code code = TREE_CODE (node);
13183 /* If 1, tell the routine that we have to return error_mark_node
13184 after checking for the initialization of the RHS */
13185 int error_found = 0;
13187 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
13189 /* If either op<n>_type are NULL, this might be early signs of an
13190 error situation, unless it's too early to tell (in case we're
13191 handling a `+', `==', `!=' or `instanceof'.) We want to set op<n>_type
13192 correctly so the error can be later on reported accurately. */
13193 if (! (code == PLUS_EXPR || code == NE_EXPR
13194 || code == EQ_EXPR || code == INSTANCEOF_EXPR))
13199 n = java_complete_tree (op1);
13200 op1_type = TREE_TYPE (n);
13204 n = java_complete_tree (op2);
13205 op2_type = TREE_TYPE (n);
13211 /* 15.16 Multiplicative operators */
13212 case MULT_EXPR: /* 15.16.1 Multiplication Operator * */
13213 case RDIV_EXPR: /* 15.16.2 Division Operator / */
13214 case TRUNC_DIV_EXPR: /* 15.16.2 Integral type Division Operator / */
13215 case TRUNC_MOD_EXPR: /* 15.16.3 Remainder operator % */
13216 if (!JNUMERIC_TYPE_P (op1_type) || !JNUMERIC_TYPE_P (op2_type))
13218 if (!JNUMERIC_TYPE_P (op1_type))
13219 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
13220 if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
13221 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
13222 TREE_TYPE (node) = error_mark_node;
13226 prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
13228 /* Detect integral division by zero */
13229 if ((code == RDIV_EXPR || code == TRUNC_MOD_EXPR)
13230 && TREE_CODE (prom_type) == INTEGER_TYPE
13231 && (op2 == integer_zero_node || op2 == long_zero_node ||
13232 (TREE_CODE (op2) == INTEGER_CST &&
13233 ! TREE_INT_CST_LOW (op2) && ! TREE_INT_CST_HIGH (op2))))
13235 parse_warning_context (wfl_operator, "Evaluating this expression will result in an arithmetic exception being thrown");
13236 TREE_CONSTANT (node) = 0;
13237 TREE_INVARIANT (node) = 0;
13240 /* Change the division operator if necessary */
13241 if (code == RDIV_EXPR && TREE_CODE (prom_type) == INTEGER_TYPE)
13242 TREE_SET_CODE (node, TRUNC_DIV_EXPR);
13244 /* Before divisions as is disappear, try to simplify and bail if
13245 applicable, otherwise we won't perform even simple
13246 simplifications like (1-1)/3. We can't do that with floating
13247 point number, folds can't handle them at this stage. */
13248 if (code == RDIV_EXPR && TREE_CONSTANT (op1) && TREE_CONSTANT (op2)
13249 && JINTEGRAL_TYPE_P (op1) && JINTEGRAL_TYPE_P (op2))
13251 TREE_TYPE (node) = prom_type;
13252 node = fold (node);
13253 if (TREE_CODE (node) != code)
13257 if (TREE_CODE (prom_type) == INTEGER_TYPE
13258 && flag_use_divide_subroutine
13259 && ! flag_emit_class_files
13260 && (code == RDIV_EXPR || code == TRUNC_MOD_EXPR))
13261 return build_java_soft_divmod (TREE_CODE (node), prom_type, op1, op2);
13263 /* This one is more complicated. FLOATs are processed by a
13264 function call to soft_fmod. Duplicate the value of the
13265 COMPOUND_ASSIGN_P flag. */
13266 if (code == TRUNC_MOD_EXPR)
13268 tree mod = build_java_binop (TRUNC_MOD_EXPR, prom_type, op1, op2);
13269 COMPOUND_ASSIGN_P (mod) = COMPOUND_ASSIGN_P (node);
13270 TREE_SIDE_EFFECTS (mod)
13271 = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
13276 /* 15.17 Additive Operators */
13277 case PLUS_EXPR: /* 15.17.1 String Concatenation Operator + */
13279 /* Operation is valid if either one argument is a string
13280 constant, a String object or a StringBuffer crafted for the
13281 purpose of the a previous usage of the String concatenation
13284 if (TREE_CODE (op1) == STRING_CST
13285 || TREE_CODE (op2) == STRING_CST
13286 || JSTRING_TYPE_P (op1_type)
13287 || JSTRING_TYPE_P (op2_type)
13288 || IS_CRAFTED_STRING_BUFFER_P (op1)
13289 || IS_CRAFTED_STRING_BUFFER_P (op2))
13290 return build_string_concatenation (op1, op2);
13292 case MINUS_EXPR: /* 15.17.2 Additive Operators (+ and -) for
13294 if (!JNUMERIC_TYPE_P (op1_type) || !JNUMERIC_TYPE_P (op2_type))
13296 if (!JNUMERIC_TYPE_P (op1_type))
13297 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
13298 if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
13299 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
13300 TREE_TYPE (node) = error_mark_node;
13304 prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
13307 /* 15.18 Shift Operators */
13311 if (!JINTEGRAL_TYPE_P (op1_type) || !JINTEGRAL_TYPE_P (op2_type))
13313 if (!JINTEGRAL_TYPE_P (op1_type))
13314 ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
13317 if (JNUMERIC_TYPE_P (op2_type))
13318 parse_error_context (wfl_operator,
13319 "Incompatible type for `%s'. Explicit cast needed to convert shift distance from `%s' to integral",
13320 operator_string (node),
13321 lang_printable_name (op2_type, 0));
13323 parse_error_context (wfl_operator,
13324 "Incompatible type for `%s'. Can't convert shift distance from `%s' to integral",
13325 operator_string (node),
13326 lang_printable_name (op2_type, 0));
13328 TREE_TYPE (node) = error_mark_node;
13333 /* Unary numeric promotion (5.6.1) is performed on each operand
13335 op1 = do_unary_numeric_promotion (op1);
13336 op2 = do_unary_numeric_promotion (op2);
13338 /* If the right hand side is of type `long', first cast it to
13340 if (TREE_TYPE (op2) == long_type_node)
13341 op2 = build1 (CONVERT_EXPR, int_type_node, op2);
13343 /* The type of the shift expression is the type of the promoted
13344 type of the left-hand operand */
13345 prom_type = TREE_TYPE (op1);
13347 /* Shift int only up to 0x1f and long up to 0x3f */
13348 if (prom_type == int_type_node)
13349 op2 = fold (build2 (BIT_AND_EXPR, int_type_node, op2,
13350 build_int_cst (NULL_TREE, 0x1f)));
13352 op2 = fold (build2 (BIT_AND_EXPR, int_type_node, op2,
13353 build_int_cst (NULL_TREE, 0x3f)));
13355 /* The >>> operator is a >> operating on unsigned quantities */
13356 if (code == URSHIFT_EXPR && ! flag_emit_class_files)
13359 tree utype = java_unsigned_type (prom_type);
13360 op1 = convert (utype, op1);
13361 TREE_SET_CODE (node, RSHIFT_EXPR);
13362 TREE_OPERAND (node, 0) = op1;
13363 TREE_OPERAND (node, 1) = op2;
13364 TREE_TYPE (node) = utype;
13365 to_return = convert (prom_type, node);
13366 /* Copy the original value of the COMPOUND_ASSIGN_P flag */
13367 COMPOUND_ASSIGN_P (to_return) = COMPOUND_ASSIGN_P (node);
13368 TREE_SIDE_EFFECTS (to_return)
13369 = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
13374 /* 15.19.1 Type Comparison Operator instanceof */
13375 case INSTANCEOF_EXPR:
13377 TREE_TYPE (node) = boolean_type_node;
13379 /* OP1_TYPE might be NULL when OP1 is a string constant. */
13380 if ((cn = patch_string (op1)))
13383 op1_type = TREE_TYPE (op1);
13385 if (op1_type == NULL_TREE)
13388 if (!(op2_type = resolve_type_during_patch (op2)))
13389 return error_mark_node;
13391 /* The first operand must be a reference type or the null type */
13392 if (!JREFERENCE_TYPE_P (op1_type) && op1 != null_pointer_node)
13393 error_found = 1; /* Error reported further below */
13395 /* The second operand must be a reference type */
13396 if (!JREFERENCE_TYPE_P (op2_type))
13398 SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
13399 parse_error_context
13400 (wfl_operator, "Invalid argument `%s' for `instanceof'",
13401 lang_printable_name (op2_type, 0));
13405 if (!error_found && valid_ref_assignconv_cast_p (op1_type, op2_type, 1))
13407 /* If the first operand is null, the result is always false */
13408 if (op1 == null_pointer_node)
13409 return boolean_false_node;
13410 else if (flag_emit_class_files)
13412 TREE_OPERAND (node, 1) = op2_type;
13413 TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1);
13416 /* Otherwise we have to invoke instance of to figure it out */
13418 return build_instanceof (op1, op2_type);
13420 /* There is no way the expression operand can be an instance of
13421 the type operand. This is a compile time error. */
13424 char *t1 = xstrdup (lang_printable_name (op1_type, 0));
13425 SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
13426 parse_error_context
13427 (wfl_operator, "Impossible for `%s' to be instance of `%s'",
13428 t1, lang_printable_name (op2_type, 0));
13435 /* 15.21 Bitwise and Logical Operators */
13439 if (JINTEGRAL_TYPE_P (op1_type) && JINTEGRAL_TYPE_P (op2_type))
13440 /* Binary numeric promotion is performed on both operand and the
13441 expression retain that type */
13442 prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
13444 else if (TREE_CODE (op1_type) == BOOLEAN_TYPE
13445 && TREE_CODE (op1_type) == BOOLEAN_TYPE)
13446 /* The type of the bitwise operator expression is BOOLEAN */
13447 prom_type = boolean_type_node;
13450 if (!JINTEGRAL_TYPE_P (op1_type))
13451 ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
13452 if (!JINTEGRAL_TYPE_P (op2_type) && (op1_type != op2_type))
13453 ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op2_type);
13454 TREE_TYPE (node) = error_mark_node;
13456 /* Insert a break here if adding thing before the switch's
13457 break for this case */
13461 /* 15.22 Conditional-And Operator */
13462 case TRUTH_ANDIF_EXPR:
13463 /* 15.23 Conditional-Or Operator */
13464 case TRUTH_ORIF_EXPR:
13465 /* Operands must be of BOOLEAN type */
13466 if (TREE_CODE (op1_type) != BOOLEAN_TYPE ||
13467 TREE_CODE (op2_type) != BOOLEAN_TYPE)
13469 if (TREE_CODE (op1_type) != BOOLEAN_TYPE)
13470 ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op1_type);
13471 if (TREE_CODE (op2_type) != BOOLEAN_TYPE && (op1_type != op2_type))
13472 ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op2_type);
13473 TREE_TYPE (node) = boolean_type_node;
13477 else if (integer_zerop (op1))
13479 return code == TRUTH_ANDIF_EXPR ? op1 : op2;
13481 else if (integer_onep (op1))
13483 return code == TRUTH_ANDIF_EXPR ? op2 : op1;
13485 /* The type of the conditional operators is BOOLEAN */
13486 prom_type = boolean_type_node;
13489 /* 15.19.1 Numerical Comparison Operators <, <=, >, >= */
13494 /* The type of each of the operands must be a primitive numeric
13496 if (!JNUMERIC_TYPE_P (op1_type) || ! JNUMERIC_TYPE_P (op2_type))
13498 if (!JNUMERIC_TYPE_P (op1_type))
13499 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
13500 if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
13501 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
13502 TREE_TYPE (node) = boolean_type_node;
13506 /* Binary numeric promotion is performed on the operands */
13507 binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
13508 /* The type of the relation expression is always BOOLEAN */
13509 prom_type = boolean_type_node;
13512 /* 15.20 Equality Operator */
13515 /* It's time for us to patch the strings. */
13516 if ((cn = patch_string (op1)))
13519 op1_type = TREE_TYPE (op1);
13521 if ((cn = patch_string (op2)))
13524 op2_type = TREE_TYPE (op2);
13527 /* 15.20.1 Numerical Equality Operators == and != */
13528 /* Binary numeric promotion is performed on the operands */
13529 if (JNUMERIC_TYPE_P (op1_type) && JNUMERIC_TYPE_P (op2_type))
13530 binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
13532 /* 15.20.2 Boolean Equality Operators == and != */
13533 else if (TREE_CODE (op1_type) == BOOLEAN_TYPE &&
13534 TREE_CODE (op2_type) == BOOLEAN_TYPE)
13535 ; /* Nothing to do here */
13537 /* 15.20.3 Reference Equality Operators == and != */
13538 /* Types have to be either references or the null type. If
13539 they're references, it must be possible to convert either
13540 type to the other by casting conversion. */
13541 else if (op1 == null_pointer_node || op2 == null_pointer_node
13542 || (JREFERENCE_TYPE_P (op1_type) && JREFERENCE_TYPE_P (op2_type)
13543 && (valid_ref_assignconv_cast_p (op1_type, op2_type, 1)
13544 || valid_ref_assignconv_cast_p (op2_type,
13546 ; /* Nothing to do here */
13548 /* Else we have an error figure what can't be converted into
13549 what and report the error */
13553 t1 = xstrdup (lang_printable_name (op1_type, 0));
13554 parse_error_context
13556 "Incompatible type for `%s'. Can't convert `%s' to `%s'",
13557 operator_string (node), t1,
13558 lang_printable_name (op2_type, 0));
13560 TREE_TYPE (node) = boolean_type_node;
13564 prom_type = boolean_type_node;
13571 return error_mark_node;
13573 TREE_OPERAND (node, 0) = op1;
13574 TREE_OPERAND (node, 1) = op2;
13575 TREE_TYPE (node) = prom_type;
13576 TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
13578 if (flag_emit_xref)
13581 /* fold does not respect side-effect order as required for Java but not C.
13582 * Also, it sometimes create SAVE_EXPRs which are bad when emitting
13585 if (flag_emit_class_files ? (TREE_CONSTANT (op1) && TREE_CONSTANT (op2))
13586 : ! TREE_SIDE_EFFECTS (node))
13587 node = fold (node);
13591 /* Concatenate the STRING_CST CSTE and STRING. When AFTER is a non
13592 zero value, the value of CSTE comes after the valude of STRING */
13595 do_merge_string_cste (tree cste, const char *string, int string_len, int after)
13597 const char *old = TREE_STRING_POINTER (cste);
13598 int old_len = TREE_STRING_LENGTH (cste);
13599 int len = old_len + string_len;
13600 char *new = alloca (len+1);
13604 memcpy (new, string, string_len);
13605 memcpy (&new [string_len], old, old_len);
13609 memcpy (new, old, old_len);
13610 memcpy (&new [old_len], string, string_len);
13613 return build_string (len, new);
13616 /* Tries to merge OP1 (a STRING_CST) and OP2 (if suitable). Return a
13617 new STRING_CST on success, NULL_TREE on failure. */
13620 merge_string_cste (tree op1, tree op2, int after)
13622 /* Handle two string constants right away. */
13623 if (TREE_CODE (op2) == STRING_CST)
13624 return do_merge_string_cste (op1, TREE_STRING_POINTER (op2),
13625 TREE_STRING_LENGTH (op2), after);
13627 /* Reasonable integer constant can be treated right away. */
13628 if (TREE_CODE (op2) == INTEGER_CST && !TREE_CONSTANT_OVERFLOW (op2))
13630 static const char *const boolean_true = "true";
13631 static const char *const boolean_false = "false";
13632 static const char *const null_pointer = "null";
13634 const char *string;
13636 if (op2 == boolean_true_node)
13637 string = boolean_true;
13638 else if (op2 == boolean_false_node)
13639 string = boolean_false;
13640 else if (op2 == null_pointer_node
13641 || (integer_zerop (op2)
13642 && TREE_CODE (TREE_TYPE (op2)) == POINTER_TYPE))
13643 /* FIXME: null is not a compile-time constant, so it is only safe to
13644 merge if the overall expression is non-constant. However, this
13645 code always merges without checking the overall expression. */
13646 string = null_pointer;
13647 else if (TREE_TYPE (op2) == char_type_node)
13649 /* Convert the character into UTF-8. */
13650 unsigned int c = (unsigned int) TREE_INT_CST_LOW (op2);
13651 unsigned char *p = (unsigned char *) ch;
13652 if (0x01 <= c && c <= 0x7f)
13653 *p++ = (unsigned char) c;
13654 else if (c < 0x7ff)
13656 *p++ = (unsigned char) (c >> 6 | 0xc0);
13657 *p++ = (unsigned char) ((c & 0x3f) | 0x80);
13661 *p++ = (unsigned char) (c >> 12 | 0xe0);
13662 *p++ = (unsigned char) (((c >> 6) & 0x3f) | 0x80);
13663 *p++ = (unsigned char) ((c & 0x3f) | 0x80);
13670 string = string_convert_int_cst (op2);
13672 return do_merge_string_cste (op1, string, strlen (string), after);
13677 /* Tries to statically concatenate OP1 and OP2 if possible. Either one
13678 has to be a STRING_CST and the other part must be a STRING_CST or a
13679 INTEGRAL constant. Return a new STRING_CST if the operation
13680 succeed, NULL_TREE otherwise.
13682 If the case we want to optimize for space, we might want to return
13683 NULL_TREE for each invocation of this routine. FIXME */
13686 string_constant_concatenation (tree op1, tree op2)
13688 if (TREE_CODE (op1) == STRING_CST || (TREE_CODE (op2) == STRING_CST))
13693 string = (TREE_CODE (op1) == STRING_CST ? op1 : op2);
13694 rest = (string == op1 ? op2 : op1);
13695 invert = (string == op1 ? 0 : 1 );
13697 /* Walk REST, only if it looks reasonable */
13698 if (TREE_CODE (rest) != STRING_CST
13699 && !IS_CRAFTED_STRING_BUFFER_P (rest)
13700 && !JSTRING_TYPE_P (TREE_TYPE (rest))
13701 && TREE_CODE (rest) == EXPR_WITH_FILE_LOCATION)
13703 rest = java_complete_tree (rest);
13704 if (rest == error_mark_node)
13705 return error_mark_node;
13706 rest = fold (rest);
13708 return merge_string_cste (string, rest, invert);
13713 /* Implement the `+' operator. Does static optimization if possible,
13714 otherwise create (if necessary) and append elements to a
13715 StringBuffer. The StringBuffer will be carried around until it is
13716 used for a function call or an assignment. Then toString() will be
13717 called on it to turn it into a String object. */
13720 build_string_concatenation (tree op1, tree op2)
13723 int side_effects = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
13725 if (flag_emit_xref)
13726 return build2 (PLUS_EXPR, string_type_node, op1, op2);
13728 /* Try to do some static optimization */
13729 if ((result = string_constant_concatenation (op1, op2)))
13732 /* Discard empty strings on either side of the expression */
13733 if (TREE_CODE (op1) == STRING_CST && TREE_STRING_LENGTH (op1) == 0)
13738 else if (TREE_CODE (op2) == STRING_CST && TREE_STRING_LENGTH (op2) == 0)
13741 /* If operands are string constant, turn then into object references */
13742 if (TREE_CODE (op1) == STRING_CST)
13743 op1 = patch_string_cst (op1);
13744 if (op2 && TREE_CODE (op2) == STRING_CST)
13745 op2 = patch_string_cst (op2);
13747 /* If either one of the constant is null and the other non null
13748 operand is a String constant, return it. */
13749 if ((TREE_CODE (op1) == STRING_CST) && !op2)
13752 /* If OP1 isn't already a StringBuffer, create and
13753 initialize a new one */
13754 if (!IS_CRAFTED_STRING_BUFFER_P (op1))
13756 /* Two solutions here:
13757 1) OP1 is a constant string reference, we call new StringBuffer(OP1)
13758 2) OP1 is something else, we call new StringBuffer().append(OP1). */
13759 if (TREE_CONSTANT (op1) && JSTRING_TYPE_P (TREE_TYPE (op1)))
13760 op1 = BUILD_STRING_BUFFER (op1);
13763 tree aNew = BUILD_STRING_BUFFER (NULL_TREE);
13764 op1 = make_qualified_primary (aNew, BUILD_APPEND (op1), 0);
13770 /* OP1 is no longer the last node holding a crafted StringBuffer */
13771 IS_CRAFTED_STRING_BUFFER_P (op1) = 0;
13772 /* Create a node for `{new...,xxx}.append (op2)' */
13774 op1 = make_qualified_primary (op1, BUILD_APPEND (op2), 0);
13777 /* Mark the last node holding a crafted StringBuffer */
13778 IS_CRAFTED_STRING_BUFFER_P (op1) = 1;
13780 TREE_SIDE_EFFECTS (op1) = side_effects;
13784 /* Patch the string node NODE. NODE can be a STRING_CST of a crafted
13785 StringBuffer. If no string were found to be patched, return
13789 patch_string (tree node)
13791 if (node == error_mark_node)
13792 return error_mark_node;
13793 if (TREE_CODE (node) == STRING_CST)
13794 return patch_string_cst (node);
13795 else if (IS_CRAFTED_STRING_BUFFER_P (node))
13797 int saved = ctxp->explicit_constructor_p;
13798 tree invoke = build_method_invocation (wfl_to_string, NULL_TREE);
13800 /* Temporary disable forbid the use of `this'. */
13801 ctxp->explicit_constructor_p = 0;
13802 ret = java_complete_tree (make_qualified_primary (node, invoke, 0));
13803 /* String concatenation arguments must be evaluated in order too. */
13804 ret = force_evaluation_order (ret);
13805 /* Restore it at its previous value */
13806 ctxp->explicit_constructor_p = saved;
13812 /* Build the internal representation of a string constant. */
13815 patch_string_cst (tree node)
13818 if (! flag_emit_class_files)
13820 node = get_identifier (TREE_STRING_POINTER (node));
13821 location = alloc_name_constant (CONSTANT_String, node);
13822 node = build_ref_from_constant_pool (location);
13824 TREE_CONSTANT (node) = 1;
13825 TREE_INVARIANT (node) = 1;
13827 /* ??? Guessing that the class file code can't handle casts. */
13828 if (! flag_emit_class_files)
13829 node = convert (string_ptr_type_node, node);
13831 TREE_TYPE (node) = string_ptr_type_node;
13836 /* Build an incomplete unary operator expression. */
13839 build_unaryop (int op_token, int op_location, tree op1)
13845 case PLUS_TK: op = UNARY_PLUS_EXPR; break;
13846 case MINUS_TK: op = NEGATE_EXPR; break;
13847 case NEG_TK: op = TRUTH_NOT_EXPR; break;
13848 case NOT_TK: op = BIT_NOT_EXPR; break;
13852 unaryop = build1 (op, NULL_TREE, op1);
13853 TREE_SIDE_EFFECTS (unaryop) = 1;
13854 /* Store the location of the operator, for better error report. The
13855 string of the operator will be rebuild based on the OP value. */
13856 EXPR_WFL_LINECOL (unaryop) = op_location;
13860 /* Special case for the ++/-- operators, since they require an extra
13861 argument to build, which is set to NULL and patched
13862 later. IS_POST_P is 1 if the operator, 0 otherwise. */
13865 build_incdec (int op_token, int op_location, tree op1, int is_post_p)
13867 static const enum tree_code lookup [2][2] =
13869 { PREDECREMENT_EXPR, PREINCREMENT_EXPR, },
13870 { POSTDECREMENT_EXPR, POSTINCREMENT_EXPR, },
13872 tree node = build2 (lookup [is_post_p][(op_token - DECR_TK)],
13873 NULL_TREE, op1, NULL_TREE);
13874 TREE_SIDE_EFFECTS (node) = 1;
13875 /* Store the location of the operator, for better error report. The
13876 string of the operator will be rebuild based on the OP value. */
13877 EXPR_WFL_LINECOL (node) = op_location;
13881 /* Build an incomplete cast operator, based on the use of the
13882 CONVERT_EXPR. Note that TREE_TYPE of the constructed node is
13883 set. java_complete_tree is trained to walk a CONVERT_EXPR even
13884 though its type is already set. */
13887 build_cast (int location, tree type, tree exp)
13889 tree node = build1 (CONVERT_EXPR, type, exp);
13890 EXPR_WFL_LINECOL (node) = location;
13894 /* Build an incomplete class reference operator. */
13896 build_incomplete_class_ref (int location, tree class_name)
13898 tree node = build1 (CLASS_LITERAL, NULL_TREE, class_name);
13899 tree class_decl = GET_CPC ();
13900 tree this_class = TREE_TYPE (class_decl);
13902 /* Generate the synthetic static method `class$'. (Previously we
13903 deferred this, causing different method tables to be emitted
13904 for native code and bytecode.) */
13905 if (!TYPE_DOT_CLASS (this_class)
13906 && !JPRIMITIVE_TYPE_P (class_name)
13907 && !(TREE_CODE (class_name) == VOID_TYPE))
13909 tree cpc_list = GET_CPC_LIST();
13910 tree cpc = cpc_list;
13913 /* For inner classes, add a 'class$' method to their outermost
13914 context, creating it if necessary. */
13916 while (GET_NEXT_ENCLOSING_CPC(cpc))
13917 cpc = GET_NEXT_ENCLOSING_CPC(cpc);
13918 class_decl = TREE_VALUE (cpc);
13920 target_class = TREE_TYPE (class_decl);
13922 if (CLASS_INTERFACE (TYPE_NAME (target_class)))
13924 /* For interfaces, adding a static 'class$' method directly
13925 is illegal. So create an inner class to contain the new
13926 method. Empirically this matches the behavior of javac. */
13928 /* We want the generated inner class inside the outermost class. */
13929 GET_CPC_LIST() = cpc;
13930 t = build_wfl_node (DECL_NAME (TYPE_NAME (object_type_node)));
13931 inner = create_anonymous_class (t);
13932 target_class = TREE_TYPE (inner);
13933 end_class_declaration (1);
13934 GET_CPC_LIST() = cpc_list;
13937 if (TYPE_DOT_CLASS (target_class) == NULL_TREE)
13938 build_dot_class_method (target_class);
13940 if (this_class != target_class)
13941 TYPE_DOT_CLASS (this_class) = TYPE_DOT_CLASS (target_class);
13944 EXPR_WFL_LINECOL (node) = location;
13948 /* Complete an incomplete class reference operator. */
13950 patch_incomplete_class_ref (tree node)
13952 tree type = TREE_OPERAND (node, 0);
13955 if (!(ref_type = resolve_type_during_patch (type)))
13956 return error_mark_node;
13958 /* If we're not emitting class files and we know ref_type is a
13959 compiled class, build a direct reference. */
13960 if ((! flag_emit_class_files && is_compiled_class (ref_type))
13961 || JPRIMITIVE_TYPE_P (ref_type)
13962 || TREE_CODE (ref_type) == VOID_TYPE)
13964 tree dot = build_class_ref (ref_type);
13965 /* A class referenced by `foo.class' is initialized. */
13966 if (!flag_emit_class_files)
13967 dot = build_class_init (ref_type, dot);
13968 return java_complete_tree (dot);
13971 /* If we're emitting class files and we have to deal with non
13972 primitive types, we invoke the synthetic static method `class$'. */
13973 ref_type = build_dot_class_method_invocation (current_class, ref_type);
13974 return java_complete_tree (ref_type);
13977 /* 15.14 Unary operators. We return error_mark_node in case of error,
13978 but preserve the type of NODE if the type is fixed. */
13981 patch_unaryop (tree node, tree wfl_op)
13983 tree op = TREE_OPERAND (node, 0);
13984 tree op_type = TREE_TYPE (op);
13985 tree prom_type = NULL_TREE, value, decl;
13986 int outer_field_flag = 0;
13987 int code = TREE_CODE (node);
13988 int error_found = 0;
13990 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
13994 /* 15.13.2 Postfix Increment Operator ++ */
13995 case POSTINCREMENT_EXPR:
13996 /* 15.13.3 Postfix Increment Operator -- */
13997 case POSTDECREMENT_EXPR:
13998 /* 15.14.1 Prefix Increment Operator ++ */
13999 case PREINCREMENT_EXPR:
14000 /* 15.14.2 Prefix Decrement Operator -- */
14001 case PREDECREMENT_EXPR:
14002 op = decl = strip_out_static_field_access_decl (op);
14003 outer_field_flag = outer_field_expanded_access_p (op, NULL, NULL, NULL);
14004 /* We might be trying to change an outer field accessed using
14006 if (outer_field_flag)
14008 /* Retrieve the decl of the field we're trying to access. We
14009 do that by first retrieving the function we would call to
14010 access the field. It has been already verified that this
14011 field isn't final */
14012 if (flag_emit_class_files)
14013 decl = TREE_OPERAND (op, 0);
14015 decl = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (op, 0), 0), 0);
14016 decl = DECL_FUNCTION_ACCESS_DECL (decl);
14018 /* We really should have a JAVA_ARRAY_EXPR to avoid this */
14019 else if (!JDECL_P (decl)
14020 && TREE_CODE (decl) != COMPONENT_REF
14021 && !(flag_emit_class_files && TREE_CODE (decl) == ARRAY_REF)
14022 && TREE_CODE (decl) != INDIRECT_REF
14023 && !(TREE_CODE (decl) == COMPOUND_EXPR
14024 && TREE_OPERAND (decl, 1)
14025 && (TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)))
14027 TREE_TYPE (node) = error_mark_node;
14031 /* From now on, we know that op if a variable and that it has a
14032 valid wfl. We use wfl_op to locate errors related to the
14034 if (!JNUMERIC_TYPE_P (op_type))
14036 parse_error_context
14037 (wfl_op, "Invalid argument type `%s' to `%s'",
14038 lang_printable_name (op_type, 0), operator_string (node));
14039 TREE_TYPE (node) = error_mark_node;
14044 /* Before the addition, binary numeric promotion is performed on
14045 both operands, if really necessary */
14046 if (JINTEGRAL_TYPE_P (op_type))
14048 value = build_int_cst (op_type, 1);
14049 TREE_TYPE (node) = op_type;
14053 value = build_int_cst (NULL_TREE, 1);
14055 binary_numeric_promotion (op_type,
14056 TREE_TYPE (value), &op, &value);
14059 /* We remember we might be accessing an outer field */
14060 if (outer_field_flag)
14062 /* We re-generate an access to the field */
14063 value = build2 (PLUS_EXPR, TREE_TYPE (op),
14064 build_outer_field_access (wfl_op, decl), value);
14066 /* And we patch the original access$() into a write
14067 with plus_op as a rhs */
14068 return outer_field_access_fix (node, op, value);
14071 /* And write back into the node. */
14072 TREE_OPERAND (node, 0) = op;
14073 TREE_OPERAND (node, 1) = value;
14074 /* Convert the overall back into its original type, if
14075 necessary, and return */
14076 if (JINTEGRAL_TYPE_P (op_type))
14077 return fold (node);
14079 return fold (convert (op_type, node));
14083 /* 15.14.3 Unary Plus Operator + */
14084 case UNARY_PLUS_EXPR:
14085 /* 15.14.4 Unary Minus Operator - */
14087 if (!JNUMERIC_TYPE_P (op_type))
14089 ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op_type);
14090 TREE_TYPE (node) = error_mark_node;
14093 /* Unary numeric promotion is performed on operand */
14096 op = do_unary_numeric_promotion (op);
14097 prom_type = TREE_TYPE (op);
14098 if (code == UNARY_PLUS_EXPR)
14103 /* 15.14.5 Bitwise Complement Operator ~ */
14105 if (!JINTEGRAL_TYPE_P (op_type))
14107 ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op_type);
14108 TREE_TYPE (node) = error_mark_node;
14113 op = do_unary_numeric_promotion (op);
14114 prom_type = TREE_TYPE (op);
14118 /* 15.14.6 Logical Complement Operator ! */
14119 case TRUTH_NOT_EXPR:
14120 if (TREE_CODE (op_type) != BOOLEAN_TYPE)
14122 ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op_type);
14123 /* But the type is known. We will report an error if further
14124 attempt of a assignment is made with this rhs */
14125 TREE_TYPE (node) = boolean_type_node;
14129 prom_type = boolean_type_node;
14132 /* 15.15 Cast Expression */
14134 value = patch_cast (node, wfl_operator);
14135 if (value == error_mark_node)
14137 /* If this cast is part of an assignment, we tell the code
14138 that deals with it not to complain about a mismatch,
14139 because things have been cast, anyways */
14140 TREE_TYPE (node) = error_mark_node;
14145 value = fold (value);
14146 TREE_SIDE_EFFECTS (value) = TREE_SIDE_EFFECTS (op);
14153 return error_mark_node;
14155 /* There are cases where node has been replaced by something else
14156 and we don't end up returning here: UNARY_PLUS_EXPR,
14157 CONVERT_EXPR, {POST,PRE}{INCR,DECR}EMENT_EXPR. */
14158 TREE_OPERAND (node, 0) = fold (op);
14159 TREE_TYPE (node) = prom_type;
14160 TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op);
14161 return fold (node);
14164 /* Generic type resolution that sometimes takes place during node
14165 patching. Returned the resolved type or generate an error
14166 message. Return the resolved type or NULL_TREE. */
14169 resolve_type_during_patch (tree type)
14171 if (unresolved_type_p (type, NULL))
14173 tree type_decl = resolve_and_layout (EXPR_WFL_NODE (type), type);
14176 parse_error_context (type,
14177 "Class `%s' not found in type declaration",
14178 IDENTIFIER_POINTER (EXPR_WFL_NODE (type)));
14182 check_deprecation (type, type_decl);
14184 return TREE_TYPE (type_decl);
14189 /* 5.5 Casting Conversion. error_mark_node is returned if an error is
14190 found. Otherwise NODE or something meant to replace it is returned. */
14193 patch_cast (tree node, tree wfl_op)
14195 tree op = TREE_OPERAND (node, 0);
14196 tree cast_type = TREE_TYPE (node);
14197 tree patched, op_type;
14200 /* Some string patching might be necessary at this stage */
14201 if ((patched = patch_string (op)))
14202 TREE_OPERAND (node, 0) = op = patched;
14203 op_type = TREE_TYPE (op);
14205 /* First resolve OP_TYPE if unresolved */
14206 if (!(cast_type = resolve_type_during_patch (cast_type)))
14207 return error_mark_node;
14209 /* Check on cast that are proven correct at compile time */
14210 if (JNUMERIC_TYPE_P (cast_type) && JNUMERIC_TYPE_P (op_type))
14213 if (cast_type == op_type)
14216 /* A narrowing conversion from a floating-point number to an
14217 integral type requires special handling (5.1.3). */
14218 if (JFLOAT_TYPE_P (op_type) && JINTEGRAL_TYPE_P (cast_type))
14219 if (cast_type != long_type_node)
14220 op = convert (integer_type_node, op);
14222 /* Try widening/narrowing conversion. Potentially, things need
14223 to be worked out in gcc so we implement the extreme cases
14224 correctly. fold_convert() needs to be fixed. */
14225 return convert (cast_type, op);
14228 /* It's also valid to cast a boolean into a boolean */
14229 if (op_type == boolean_type_node && cast_type == boolean_type_node)
14232 /* null can be casted to references */
14233 if (op == null_pointer_node && JREFERENCE_TYPE_P (cast_type))
14234 return build_null_of_type (cast_type);
14236 /* The remaining legal casts involve conversion between reference
14237 types. Check for their compile time correctness. */
14238 if (JREFERENCE_TYPE_P (op_type) && JREFERENCE_TYPE_P (cast_type)
14239 && valid_ref_assignconv_cast_p (op_type, cast_type, 1))
14241 TREE_TYPE (node) = promote_type (cast_type);
14242 /* Now, the case can be determined correct at compile time if
14243 OP_TYPE can be converted into CAST_TYPE by assignment
14244 conversion (5.2) */
14246 if (valid_ref_assignconv_cast_p (op_type, cast_type, 0))
14248 TREE_SET_CODE (node, NOP_EXPR);
14252 if (flag_emit_class_files)
14254 TREE_SET_CODE (node, CONVERT_EXPR);
14258 /* The cast requires a run-time check */
14259 return build3 (CALL_EXPR, promote_type (cast_type),
14260 build_address_of (soft_checkcast_node),
14261 tree_cons (NULL_TREE, build_class_ref (cast_type),
14262 build_tree_list (NULL_TREE, op)),
14266 /* Any other casts are proven incorrect at compile time */
14267 t1 = xstrdup (lang_printable_name (op_type, 0));
14268 parse_error_context (wfl_op, "Invalid cast from `%s' to `%s'",
14269 t1, lang_printable_name (cast_type, 0));
14271 return error_mark_node;
14274 /* Build a null constant and give it the type TYPE. */
14277 build_null_of_type (tree type)
14279 tree node = build_int_cst (promote_type (type), 0);
14283 /* Build an ARRAY_REF incomplete tree node. Note that operand 1 isn't
14284 a list of indices. */
14286 build_array_ref (int location, tree array, tree index)
14288 tree node = build4 (ARRAY_REF, NULL_TREE, array, index,
14289 NULL_TREE, NULL_TREE);
14290 EXPR_WFL_LINECOL (node) = location;
14294 /* 15.12 Array Access Expression */
14297 patch_array_ref (tree node)
14299 tree array = TREE_OPERAND (node, 0);
14300 tree array_type = TREE_TYPE (array);
14301 tree index = TREE_OPERAND (node, 1);
14302 tree index_type = TREE_TYPE (index);
14303 int error_found = 0;
14305 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
14307 if (TREE_CODE (array_type) == POINTER_TYPE)
14308 array_type = TREE_TYPE (array_type);
14310 /* The array reference must be an array */
14311 if (!TYPE_ARRAY_P (array_type))
14313 parse_error_context
14315 "`[]' can only be applied to arrays. It can't be applied to `%s'",
14316 lang_printable_name (array_type, 0));
14317 TREE_TYPE (node) = error_mark_node;
14321 /* The array index undergoes unary numeric promotion. The promoted
14322 type must be int */
14323 index = do_unary_numeric_promotion (index);
14324 if (TREE_TYPE (index) != int_type_node)
14326 if (valid_cast_to_p (index_type, int_type_node))
14327 parse_error_context (wfl_operator,
14328 "Incompatible type for `[]'. Explicit cast needed to convert `%s' to `int'",
14329 lang_printable_name (index_type, 0));
14331 parse_error_context (wfl_operator,
14332 "Incompatible type for `[]'. Can't convert `%s' to `int'",
14333 lang_printable_name (index_type, 0));
14334 TREE_TYPE (node) = error_mark_node;
14339 return error_mark_node;
14341 array_type = TYPE_ARRAY_ELEMENT (array_type);
14343 if (flag_emit_class_files || flag_emit_xref)
14345 TREE_OPERAND (node, 0) = array;
14346 TREE_OPERAND (node, 1) = index;
14349 node = build_java_arrayaccess (array, array_type, index);
14350 TREE_TYPE (node) = array_type;
14354 /* 15.9 Array Creation Expressions */
14357 build_newarray_node (tree type, tree dims, int extra_dims)
14359 tree node = build3 (NEW_ARRAY_EXPR, NULL_TREE, type,
14361 build_int_cst (NULL_TREE, extra_dims));
14366 patch_newarray (tree node)
14368 tree type = TREE_OPERAND (node, 0);
14369 tree dims = TREE_OPERAND (node, 1);
14370 tree cdim, array_type;
14371 int error_found = 0;
14373 int xdims = TREE_INT_CST_LOW (TREE_OPERAND (node, 2));
14375 /* Dimension types are verified. It's better for the types to be
14376 verified in order. */
14377 for (cdim = dims, ndims = 0; cdim; cdim = TREE_CHAIN (cdim), ndims++ )
14380 tree dim = TREE_VALUE (cdim);
14382 /* Dim might have been saved during its evaluation */
14383 dim = (TREE_CODE (dim) == SAVE_EXPR ? TREE_OPERAND (dim, 0) : dim);
14385 /* The type of each specified dimension must be an integral type. */
14386 if (!JINTEGRAL_TYPE_P (TREE_TYPE (dim)))
14389 /* Each expression undergoes an unary numeric promotion (5.6.1) and the
14390 promoted type must be int. */
14393 dim = do_unary_numeric_promotion (dim);
14394 if (TREE_TYPE (dim) != int_type_node)
14398 /* Report errors on types here */
14401 parse_error_context
14402 (TREE_PURPOSE (cdim),
14403 "Incompatible type for dimension in array creation expression. %s convert `%s' to `int'",
14404 (valid_cast_to_p (TREE_TYPE (dim), int_type_node) ?
14405 "Explicit cast needed to" : "Can't"),
14406 lang_printable_name (TREE_TYPE (dim), 0));
14410 TREE_PURPOSE (cdim) = NULL_TREE;
14413 /* Resolve array base type if unresolved */
14414 if (!(type = resolve_type_during_patch (type)))
14419 /* We don't want further evaluation of this bogus array creation
14421 TREE_TYPE (node) = error_mark_node;
14422 return error_mark_node;
14425 /* Set array_type to the actual (promoted) array type of the result. */
14426 if (TREE_CODE (type) == RECORD_TYPE)
14427 type = build_pointer_type (type);
14428 while (--xdims >= 0)
14430 type = promote_type (build_java_array_type (type, -1));
14432 dims = nreverse (dims);
14434 for (cdim = dims; cdim; cdim = TREE_CHAIN (cdim))
14438 = build_java_array_type (type,
14439 TREE_CODE (cdim) == INTEGER_CST
14440 ? (HOST_WIDE_INT) TREE_INT_CST_LOW (cdim)
14442 array_type = promote_type (array_type);
14444 dims = nreverse (dims);
14446 /* The node is transformed into a function call. Things are done
14447 differently according to the number of dimensions. If the number
14448 of dimension is equal to 1, then the nature of the base type
14449 (primitive or not) matters. */
14451 return build_new_array (type, TREE_VALUE (dims));
14453 /* Can't reuse what's already written in expr.c because it uses the
14454 JVM stack representation. Provide a build_multianewarray. FIXME */
14455 return build3 (CALL_EXPR, array_type,
14456 build_address_of (soft_multianewarray_node),
14457 tree_cons (NULL_TREE,
14458 build_class_ref (TREE_TYPE (array_type)),
14459 tree_cons (NULL_TREE,
14460 build_int_cst (NULL_TREE, ndims),
14465 /* 10.6 Array initializer. */
14467 /* Build a wfl for array element that don't have one, so we can
14468 pin-point errors. */
14471 maybe_build_array_element_wfl (tree node)
14473 if (TREE_CODE (node) != EXPR_WITH_FILE_LOCATION)
14474 return build_expr_wfl (NULL_TREE, ctxp->filename,
14475 ctxp->elc.line, ctxp->elc.prev_col);
14480 /* Build a NEW_ARRAY_INIT that features a CONSTRUCTOR node. This makes
14481 identification of initialized arrays easier to detect during walk
14485 build_new_array_init (int location, tree values)
14487 tree constructor = build_constructor (NULL_TREE, values);
14488 tree to_return = build1 (NEW_ARRAY_INIT, NULL_TREE, constructor);
14489 EXPR_WFL_LINECOL (to_return) = location;
14493 /* Expand a NEW_ARRAY_INIT node. Return error_mark_node if an error
14494 occurred. Otherwise return NODE after having set its type
14498 patch_new_array_init (tree type, tree node)
14500 int error_seen = 0;
14501 tree current, element_type;
14502 HOST_WIDE_INT length;
14503 int all_constant = 1;
14504 tree init = TREE_OPERAND (node, 0);
14506 if (TREE_CODE (type) != POINTER_TYPE || ! TYPE_ARRAY_P (TREE_TYPE (type)))
14508 parse_error_context (node,
14509 "Invalid array initializer for non-array type `%s'",
14510 lang_printable_name (type, 1));
14511 return error_mark_node;
14513 type = TREE_TYPE (type);
14514 element_type = TYPE_ARRAY_ELEMENT (type);
14516 CONSTRUCTOR_ELTS (init) = nreverse (CONSTRUCTOR_ELTS (init));
14518 for (length = 0, current = CONSTRUCTOR_ELTS (init);
14519 current; length++, current = TREE_CHAIN (current))
14521 tree elt = TREE_VALUE (current);
14522 if (elt == NULL_TREE || TREE_CODE (elt) != NEW_ARRAY_INIT)
14524 error_seen |= array_constructor_check_entry (element_type, current);
14525 elt = TREE_VALUE (current);
14526 /* When compiling to native code, STRING_CST is converted to
14527 INDIRECT_REF, but still with a TREE_CONSTANT flag. */
14528 if (! TREE_CONSTANT (elt) || TREE_CODE (elt) == INDIRECT_REF)
14533 TREE_VALUE (current) = patch_new_array_init (element_type, elt);
14534 TREE_PURPOSE (current) = NULL_TREE;
14537 if (elt && TREE_CODE (elt) == TREE_LIST
14538 && TREE_VALUE (elt) == error_mark_node)
14543 return error_mark_node;
14545 /* Create a new type. We can't reuse the one we have here by
14546 patching its dimension because it originally is of dimension -1
14547 hence reused by gcc. This would prevent triangular arrays. */
14548 type = build_java_array_type (element_type, length);
14549 TREE_TYPE (init) = TREE_TYPE (TREE_CHAIN (TREE_CHAIN (TYPE_FIELDS (type))));
14550 TREE_TYPE (node) = promote_type (type);
14551 TREE_CONSTANT (init) = all_constant;
14552 TREE_INVARIANT (init) = all_constant;
14553 TREE_CONSTANT (node) = all_constant;
14554 TREE_INVARIANT (node) = all_constant;
14558 /* Verify that one entry of the initializer element list can be
14559 assigned to the array base type. Report 1 if an error occurred, 0
14563 array_constructor_check_entry (tree type, tree entry)
14565 char *array_type_string = NULL; /* For error reports */
14566 tree value, type_value, new_value, wfl_value, patched;
14567 int error_seen = 0;
14569 new_value = NULL_TREE;
14570 wfl_value = TREE_VALUE (entry);
14572 value = java_complete_tree (TREE_VALUE (entry));
14573 /* patch_string return error_mark_node if arg is error_mark_node */
14574 if ((patched = patch_string (value)))
14576 if (value == error_mark_node)
14579 type_value = TREE_TYPE (value);
14581 /* At anytime, try_builtin_assignconv can report a warning on
14582 constant overflow during narrowing. */
14583 SET_WFL_OPERATOR (wfl_operator, TREE_PURPOSE (entry), wfl_value);
14584 new_value = try_builtin_assignconv (wfl_operator, type, value);
14585 if (!new_value && (new_value = try_reference_assignconv (type, value)))
14586 type_value = promote_type (type);
14588 /* Check and report errors */
14591 const char *const msg = (!valid_cast_to_p (type_value, type) ?
14592 "Can't" : "Explicit cast needed to");
14593 if (!array_type_string)
14594 array_type_string = xstrdup (lang_printable_name (type, 1));
14595 parse_error_context
14596 (wfl_operator, "Incompatible type for array. %s convert `%s' to `%s'",
14597 msg, lang_printable_name (type_value, 1), array_type_string);
14602 TREE_VALUE (entry) = new_value;
14604 if (array_type_string)
14605 free (array_type_string);
14607 TREE_PURPOSE (entry) = NULL_TREE;
14612 build_this (int location)
14614 tree node = build_wfl_node (this_identifier_node);
14615 TREE_SET_CODE (node, THIS_EXPR);
14616 EXPR_WFL_LINECOL (node) = location;
14620 /* 14.15 The return statement. It builds a modify expression that
14621 assigns the returned value to the RESULT_DECL that hold the value
14625 build_return (int location, tree op)
14627 tree node = build1 (RETURN_EXPR, NULL_TREE, op);
14628 EXPR_WFL_LINECOL (node) = location;
14629 node = build_debugable_stmt (location, node);
14634 patch_return (tree node)
14636 tree return_exp = TREE_OPERAND (node, 0);
14637 tree meth = current_function_decl;
14638 tree mtype = TREE_TYPE (TREE_TYPE (current_function_decl));
14639 int error_found = 0;
14641 TREE_TYPE (node) = error_mark_node;
14642 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
14644 /* It's invalid to have a return value within a function that is
14645 declared with the keyword void or that is a constructor */
14646 if (return_exp && (mtype == void_type_node || DECL_CONSTRUCTOR_P (meth)))
14649 /* It's invalid to use a return statement in a static block */
14650 if (DECL_CLINIT_P (current_function_decl))
14653 /* It's invalid to have a no return value within a function that
14654 isn't declared with the keyword `void' */
14655 if (!return_exp && (mtype != void_type_node && !DECL_CONSTRUCTOR_P (meth)))
14658 if (DECL_INSTINIT_P (current_function_decl))
14663 if (DECL_INSTINIT_P (current_function_decl))
14664 parse_error_context (wfl_operator,
14665 "`return' inside instance initializer");
14667 else if (DECL_CLINIT_P (current_function_decl))
14668 parse_error_context (wfl_operator,
14669 "`return' inside static initializer");
14671 else if (!DECL_CONSTRUCTOR_P (meth))
14673 char *t = xstrdup (lang_printable_name (mtype, 0));
14674 parse_error_context (wfl_operator,
14675 "`return' with%s value from `%s %s'",
14676 (error_found == 1 ? "" : "out"),
14677 t, lang_printable_name (meth, 2));
14681 parse_error_context (wfl_operator,
14682 "`return' with value from constructor `%s'",
14683 lang_printable_name (meth, 2));
14684 return error_mark_node;
14687 /* If we have a return_exp, build a modify expression and expand
14688 it. Note: at that point, the assignment is declared valid, but we
14689 may want to carry some more hacks */
14692 tree exp = java_complete_tree (return_exp);
14693 tree modify, patched;
14695 if ((patched = patch_string (exp)))
14698 modify = build2 (MODIFY_EXPR, NULL_TREE, DECL_RESULT (meth), exp);
14699 EXPR_WFL_LINECOL (modify) = EXPR_WFL_LINECOL (node);
14700 modify = java_complete_tree (modify);
14702 if (modify != error_mark_node)
14704 TREE_SIDE_EFFECTS (modify) = 1;
14705 TREE_OPERAND (node, 0) = modify;
14708 return error_mark_node;
14710 TREE_TYPE (node) = void_type_node;
14711 TREE_SIDE_EFFECTS (node) = 1;
14715 /* 14.8 The if Statement */
14718 build_if_else_statement (int location, tree expression, tree if_body,
14723 else_body = build_java_empty_stmt ();
14724 node = build3 (COND_EXPR, NULL_TREE, expression, if_body, else_body);
14725 EXPR_WFL_LINECOL (node) = location;
14726 node = build_debugable_stmt (location, node);
14731 patch_if_else_statement (tree node)
14733 tree expression = TREE_OPERAND (node, 0);
14734 int can_complete_normally
14735 = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))
14736 | CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 2)));
14738 TREE_TYPE (node) = error_mark_node;
14739 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
14741 /* The type of expression must be boolean */
14742 if (TREE_TYPE (expression) != boolean_type_node
14743 && TREE_TYPE (expression) != promoted_boolean_type_node)
14745 parse_error_context
14747 "Incompatible type for `if'. Can't convert `%s' to `boolean'",
14748 lang_printable_name (TREE_TYPE (expression), 0));
14749 return error_mark_node;
14752 TREE_TYPE (node) = void_type_node;
14753 TREE_SIDE_EFFECTS (node) = 1;
14754 CAN_COMPLETE_NORMALLY (node) = can_complete_normally;
14758 /* 14.6 Labeled Statements */
14760 /* Action taken when a labeled statement is parsed. a new
14761 LABELED_BLOCK_EXPR is created. No statement is attached to the
14762 label, yet. LABEL can be NULL_TREE for artificially-generated blocks. */
14765 build_labeled_block (int location, tree label)
14768 tree label_decl, node;
14769 if (label == NULL_TREE || label == continue_identifier_node)
14770 label_name = label;
14773 label_name = merge_qualified_name (label_id, label);
14774 /* Issue an error if we try to reuse a label that was previously
14776 if (IDENTIFIER_LOCAL_VALUE (label_name))
14778 EXPR_WFL_LINECOL (wfl_operator) = location;
14779 parse_error_context (wfl_operator,
14780 "Declaration of `%s' shadows a previous label declaration",
14781 IDENTIFIER_POINTER (label));
14782 EXPR_WFL_LINECOL (wfl_operator) =
14783 EXPR_WFL_LINECOL (IDENTIFIER_LOCAL_VALUE (label_name));
14784 parse_error_context (wfl_operator,
14785 "This is the location of the previous declaration of label `%s'",
14786 IDENTIFIER_POINTER (label));
14787 java_error_count--;
14791 label_decl = create_label_decl (label_name);
14792 node = build2 (LABELED_BLOCK_EXPR, NULL_TREE, label_decl, NULL_TREE);
14793 EXPR_WFL_LINECOL (node) = location;
14794 TREE_SIDE_EFFECTS (node) = 1;
14798 /* A labeled statement LBE is attached a statement. */
14801 finish_labeled_statement (tree lbe, /* Labeled block expr */
14804 /* In anyways, tie the loop to its statement */
14805 LABELED_BLOCK_BODY (lbe) = statement;
14806 pop_labeled_block ();
14807 POP_LABELED_BLOCK ();
14811 /* 14.10, 14.11, 14.12 Loop Statements */
14813 /* Create an empty LOOP_EXPR and make it the last in the nested loop
14817 build_new_loop (tree loop_body)
14819 tree loop = build1 (LOOP_EXPR, NULL_TREE, loop_body);
14820 TREE_SIDE_EFFECTS (loop) = 1;
14825 /* Create a loop body according to the following structure:
14827 COMPOUND_EXPR (loop main body)
14828 EXIT_EXPR (this order is for while/for loops.
14829 LABELED_BLOCK_EXPR the order is reversed for do loops)
14830 LABEL_DECL (a continue occurring here branches at the
14831 BODY end of this labeled block)
14834 REVERSED, if nonzero, tells that the loop condition expr comes
14835 after the body, like in the do-while loop.
14837 To obtain a loop, the loop body structure described above is
14838 encapsulated within a LOOP_EXPR surrounded by a LABELED_BLOCK_EXPR:
14841 LABEL_DECL (use this label to exit the loop)
14843 <structure described above> */
14846 build_loop_body (int location, tree condition, int reversed)
14848 tree first, second, body;
14850 condition = build1 (EXIT_EXPR, NULL_TREE, condition); /* Force walk */
14851 EXPR_WFL_LINECOL (condition) = location; /* For accurate error report */
14852 condition = build_debugable_stmt (location, condition);
14853 TREE_SIDE_EFFECTS (condition) = 1;
14855 body = build_labeled_block (0, continue_identifier_node);
14856 first = (reversed ? body : condition);
14857 second = (reversed ? condition : body);
14858 return build2 (COMPOUND_EXPR, NULL_TREE,
14859 build2 (COMPOUND_EXPR, NULL_TREE, first, second),
14860 build_java_empty_stmt ());
14863 /* Install CONDITION (if any) and loop BODY (using REVERSED to tell
14864 their order) on the current loop. Unlink the current loop from the
14868 finish_loop_body (int location, tree condition, tree body, int reversed)
14870 tree to_return = ctxp->current_loop;
14871 tree loop_body = LOOP_EXPR_BODY (to_return);
14874 tree cnode = LOOP_EXPR_BODY_CONDITION_EXPR (loop_body, reversed);
14875 /* We wrapped the EXIT_EXPR around a WFL so we can debug it.
14876 The real EXIT_EXPR is one operand further. */
14877 EXPR_WFL_LINECOL (cnode) = location;
14878 /* This one is for accurate error reports */
14879 EXPR_WFL_LINECOL (TREE_OPERAND (cnode, 0)) = location;
14880 TREE_OPERAND (TREE_OPERAND (cnode, 0), 0) = condition;
14882 LOOP_EXPR_BODY_BODY_EXPR (loop_body, reversed) = body;
14887 /* Tailored version of finish_loop_body for FOR loops, when FOR
14888 loops feature the condition part */
14891 finish_for_loop (int location, tree condition, tree update, tree body)
14893 /* Put the condition and the loop body in place */
14894 tree loop = finish_loop_body (location, condition, body, 0);
14895 /* LOOP is the current loop which has been now popped of the loop
14896 stack. Mark the update block as reachable and install it. We do
14897 this because the (current interpretation of the) JLS requires
14898 that the update expression be considered reachable even if the
14899 for loop's body doesn't complete normally. */
14900 if (update != NULL_TREE && !IS_EMPTY_STMT (update))
14903 if (TREE_CODE (up2) == EXPR_WITH_FILE_LOCATION)
14904 up2 = EXPR_WFL_NODE (up2);
14905 /* It is possible for the update expression to be an
14906 EXPR_WFL_NODE wrapping nothing. */
14907 if (up2 != NULL_TREE && !IS_EMPTY_STMT (up2))
14909 /* Try to detect constraint violations. These would be
14910 programming errors somewhere. */
14911 if (! EXPR_P (up2) || TREE_CODE (up2) == LOOP_EXPR)
14913 SUPPRESS_UNREACHABLE_ERROR (up2) = 1;
14916 LOOP_EXPR_BODY_UPDATE_BLOCK (LOOP_EXPR_BODY (loop)) = update;
14920 /* Try to find the loop a block might be related to. This comprises
14921 the case where the LOOP_EXPR is found as the second operand of a
14922 COMPOUND_EXPR, because the loop happens to have an initialization
14923 part, then expressed as the first operand of the COMPOUND_EXPR. If
14924 the search finds something, 1 is returned. Otherwise, 0 is
14925 returned. The search is assumed to start from a
14926 LABELED_BLOCK_EXPR's block. */
14929 search_loop (tree statement)
14931 if (TREE_CODE (statement) == LOOP_EXPR)
14934 if (TREE_CODE (statement) == BLOCK)
14935 statement = BLOCK_SUBBLOCKS (statement);
14939 if (statement && TREE_CODE (statement) == COMPOUND_EXPR)
14940 while (statement && TREE_CODE (statement) == COMPOUND_EXPR)
14941 statement = TREE_OPERAND (statement, 1);
14943 return (TREE_CODE (statement) == LOOP_EXPR
14944 && FOR_LOOP_P (statement) ? statement : NULL_TREE);
14947 /* Return 1 if LOOP can be found in the labeled block BLOCK. 0 is
14948 returned otherwise. */
14951 labeled_block_contains_loop_p (tree block, tree loop)
14956 if (LABELED_BLOCK_BODY (block) == loop)
14959 if (FOR_LOOP_P (loop) && search_loop (LABELED_BLOCK_BODY (block)) == loop)
14965 /* If the loop isn't surrounded by a labeled statement, create one and
14966 insert LOOP as its body. */
14969 patch_loop_statement (tree loop)
14973 TREE_TYPE (loop) = void_type_node;
14974 if (labeled_block_contains_loop_p (ctxp->current_labeled_block, loop))
14977 loop_label = build_labeled_block (0, NULL_TREE);
14978 /* LOOP is an EXPR node, so it should have a valid EXPR_WFL_LINECOL
14979 that LOOP_LABEL could enquire about, for a better accuracy. FIXME */
14980 LABELED_BLOCK_BODY (loop_label) = loop;
14981 PUSH_LABELED_BLOCK (loop_label);
14985 /* 14.13, 14.14: break and continue Statements */
14987 /* Build a break or a continue statement. a null NAME indicates an
14988 unlabeled break/continue statement. */
14991 build_bc_statement (int location, int is_break, tree name)
14993 tree break_continue, label_block_expr = NULL_TREE;
14997 if (!(label_block_expr = IDENTIFIER_LOCAL_VALUE
14998 (merge_qualified_name (label_id, EXPR_WFL_NODE (name)))))
14999 /* Null means that we don't have a target for this named
15000 break/continue. In this case, we make the target to be the
15001 label name, so that the error can be reported accurately in
15002 patch_bc_statement. */
15003 label_block_expr = EXPR_WFL_NODE (name);
15005 /* Unlabeled break/continue will be handled during the
15006 break/continue patch operation */
15007 break_continue = build2 (EXIT_BLOCK_EXPR, NULL_TREE,
15008 label_block_expr, NULL_TREE);
15010 IS_BREAK_STMT_P (break_continue) = is_break;
15011 TREE_SIDE_EFFECTS (break_continue) = 1;
15012 EXPR_WFL_LINECOL (break_continue) = location;
15013 break_continue = build_debugable_stmt (location, break_continue);
15014 return break_continue;
15017 /* Verification of a break/continue statement. */
15020 patch_bc_statement (tree node)
15022 tree bc_label = EXIT_BLOCK_LABELED_BLOCK (node), target_stmt;
15023 tree labeled_block = ctxp->current_labeled_block;
15024 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
15026 /* Having an identifier here means that the target is unknown. */
15027 if (bc_label != NULL_TREE && TREE_CODE (bc_label) == IDENTIFIER_NODE)
15029 parse_error_context (wfl_operator, "No label definition found for `%s'",
15030 IDENTIFIER_POINTER (bc_label));
15031 return error_mark_node;
15033 if (! IS_BREAK_STMT_P (node))
15035 /* It's a continue statement. */
15036 for (;; labeled_block = TREE_CHAIN (labeled_block))
15038 if (labeled_block == NULL_TREE)
15040 if (bc_label == NULL_TREE)
15041 parse_error_context (wfl_operator,
15042 "`continue' must be in loop");
15044 parse_error_context
15045 (wfl_operator, "continue label `%s' does not name a loop",
15046 IDENTIFIER_POINTER (bc_label));
15047 return error_mark_node;
15049 if ((DECL_NAME (LABELED_BLOCK_LABEL (labeled_block))
15050 == continue_identifier_node)
15051 && (bc_label == NULL_TREE
15052 || TREE_CHAIN (labeled_block) == bc_label))
15054 bc_label = labeled_block;
15059 else if (!bc_label)
15061 for (;; labeled_block = TREE_CHAIN (labeled_block))
15063 if (labeled_block == NULL_TREE)
15065 parse_error_context (wfl_operator,
15066 "`break' must be in loop or switch");
15067 return error_mark_node;
15069 target_stmt = LABELED_BLOCK_BODY (labeled_block);
15070 if (TREE_CODE (target_stmt) == SWITCH_EXPR
15071 || search_loop (target_stmt))
15073 bc_label = labeled_block;
15079 EXIT_BLOCK_LABELED_BLOCK (node) = bc_label;
15080 CAN_COMPLETE_NORMALLY (bc_label) = 1;
15082 /* Our break/continue don't return values. */
15083 TREE_TYPE (node) = void_type_node;
15084 /* Encapsulate the break within a compound statement so that it's
15085 expanded all the times by expand_expr (and not clobbered
15086 sometimes, like after a if statement) */
15087 node = add_stmt_to_compound (NULL_TREE, void_type_node, node);
15088 TREE_SIDE_EFFECTS (node) = 1;
15092 /* Process the exit expression belonging to a loop. Its type must be
15096 patch_exit_expr (tree node)
15098 tree expression = TREE_OPERAND (node, 0);
15099 TREE_TYPE (node) = error_mark_node;
15100 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
15102 /* The type of expression must be boolean */
15103 if (TREE_TYPE (expression) != boolean_type_node)
15105 parse_error_context
15107 "Incompatible type for loop conditional. Can't convert `%s' to `boolean'",
15108 lang_printable_name (TREE_TYPE (expression), 0));
15109 return error_mark_node;
15111 /* Now we know things are allright, invert the condition, fold and
15113 TREE_OPERAND (node, 0) =
15114 fold (build1 (TRUTH_NOT_EXPR, boolean_type_node, expression));
15116 if (! integer_zerop (TREE_OPERAND (node, 0))
15117 && ctxp->current_loop != NULL_TREE
15118 && TREE_CODE (ctxp->current_loop) == LOOP_EXPR)
15119 CAN_COMPLETE_NORMALLY (ctxp->current_loop) = 1;
15120 if (! integer_onep (TREE_OPERAND (node, 0)))
15121 CAN_COMPLETE_NORMALLY (node) = 1;
15124 TREE_TYPE (node) = void_type_node;
15128 /* 14.9 Switch statement */
15131 patch_switch_statement (tree node)
15133 tree se = TREE_OPERAND (node, 0), se_type;
15136 /* Complete the switch expression */
15137 se = TREE_OPERAND (node, 0) = java_complete_tree (se);
15138 se_type = TREE_TYPE (se);
15139 /* The type of the switch expression must be char, byte, short or
15141 if (! JINTEGRAL_TYPE_P (se_type) || se_type == long_type_node)
15143 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
15144 parse_error_context (wfl_operator,
15145 "Incompatible type for `switch'. Can't convert `%s' to `int'",
15146 lang_printable_name (se_type, 0));
15147 /* This is what java_complete_tree will check */
15148 TREE_OPERAND (node, 0) = error_mark_node;
15149 return error_mark_node;
15152 /* Save and restore the outer case label list. */
15153 save = case_label_list;
15154 case_label_list = NULL_TREE;
15156 TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
15158 /* See if we've found a duplicate label. We can't leave this until
15159 code generation, because in `--syntax-only' and `-C' modes we
15160 don't do ordinary code generation. */
15161 for (iter = case_label_list; iter != NULL_TREE; iter = TREE_CHAIN (iter))
15163 HOST_WIDE_INT val = TREE_INT_CST_LOW (TREE_VALUE (iter));
15165 for (subiter = TREE_CHAIN (iter);
15166 subiter != NULL_TREE;
15167 subiter = TREE_CHAIN (subiter))
15169 HOST_WIDE_INT subval = TREE_INT_CST_LOW (TREE_VALUE (subiter));
15172 EXPR_WFL_LINECOL (wfl_operator)
15173 = EXPR_WFL_LINECOL (TREE_PURPOSE (iter));
15174 /* The case_label_list is in reverse order, so print the
15175 outer label first. */
15176 parse_error_context (wfl_operator, "duplicate case label: `"
15177 HOST_WIDE_INT_PRINT_DEC "'", subval);
15178 EXPR_WFL_LINECOL (wfl_operator)
15179 = EXPR_WFL_LINECOL (TREE_PURPOSE (subiter));
15180 parse_error_context (wfl_operator, "original label is here");
15187 case_label_list = save;
15189 /* Ready to return */
15190 if (TREE_CODE (TREE_OPERAND (node, 1)) == ERROR_MARK)
15192 TREE_TYPE (node) = error_mark_node;
15193 return error_mark_node;
15195 TREE_TYPE (node) = void_type_node;
15196 TREE_SIDE_EFFECTS (node) = 1;
15197 CAN_COMPLETE_NORMALLY (node)
15198 = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))
15199 || ! SWITCH_HAS_DEFAULT (node);
15205 /* Build an assertion expression for `assert CONDITION : VALUE'; VALUE
15206 might be NULL_TREE. */
15208 build_assertion (int location, tree condition, tree value)
15211 tree klass = GET_CPC ();
15213 if (! enable_assertions (klass))
15215 condition = build2 (TRUTH_ANDIF_EXPR, NULL_TREE,
15216 boolean_false_node, condition);
15217 if (value == NULL_TREE)
15218 value = build_java_empty_stmt ();
15219 return build_if_else_statement (location, condition,
15223 if (! CLASS_USES_ASSERTIONS (klass))
15225 tree field, classdollar, id, call;
15226 tree class_type = TREE_TYPE (klass);
15228 field = add_field (class_type,
15229 get_identifier ("$assertionsDisabled"),
15231 ACC_PRIVATE | ACC_STATIC | ACC_FINAL);
15232 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (field);
15233 FIELD_SYNTHETIC (field) = 1;
15235 classdollar = build_incomplete_class_ref (location, class_type);
15237 /* Call CLASS.desiredAssertionStatus(). */
15238 id = build_wfl_node (get_identifier ("desiredAssertionStatus"));
15239 call = build3 (CALL_EXPR, NULL_TREE, id, NULL_TREE, NULL_TREE);
15240 call = make_qualified_primary (classdollar, call, location);
15241 TREE_SIDE_EFFECTS (call) = 1;
15243 /* Invert to obtain !CLASS.desiredAssertionStatus(). This may
15244 seem odd, but we do it to generate code identical to that of
15246 call = build1 (TRUTH_NOT_EXPR, NULL_TREE, call);
15247 TREE_SIDE_EFFECTS (call) = 1;
15248 DECL_INITIAL (field) = call;
15250 /* Record the initializer in the initializer statement list. */
15251 call = build2 (MODIFY_EXPR, NULL_TREE, field, call);
15252 TREE_CHAIN (call) = CPC_STATIC_INITIALIZER_STMT (ctxp);
15253 SET_CPC_STATIC_INITIALIZER_STMT (ctxp, call);
15254 MODIFY_EXPR_FROM_INITIALIZATION_P (call) = 1;
15256 CLASS_USES_ASSERTIONS (klass) = 1;
15259 if (value != NULL_TREE)
15260 value = tree_cons (NULL_TREE, value, NULL_TREE);
15262 node = build_wfl_node (get_identifier ("java"));
15263 node = make_qualified_name (node, build_wfl_node (get_identifier ("lang")),
15265 node = make_qualified_name (node, build_wfl_node (get_identifier ("AssertionError")),
15268 node = build3 (NEW_CLASS_EXPR, NULL_TREE, node, value, NULL_TREE);
15269 TREE_SIDE_EFFECTS (node) = 1;
15270 /* It is too early to use BUILD_THROW. */
15271 node = build1 (THROW_EXPR, NULL_TREE, node);
15272 TREE_SIDE_EFFECTS (node) = 1;
15274 /* We invert the condition; if we just put NODE as the `else' part
15275 then we generate weird-looking bytecode. */
15276 condition = build1 (TRUTH_NOT_EXPR, NULL_TREE, condition);
15277 /* Check $assertionsDisabled. */
15279 = build2 (TRUTH_ANDIF_EXPR, NULL_TREE,
15280 build1 (TRUTH_NOT_EXPR, NULL_TREE,
15281 build_wfl_node (get_identifier ("$assertionsDisabled"))),
15283 node = build_if_else_statement (location, condition, node, NULL_TREE);
15287 /* 14.18 The try/catch statements */
15289 /* Encapsulate TRY_STMTS' in a try catch sequence. The catch clause
15290 catches TYPE and executes CATCH_STMTS. */
15293 encapsulate_with_try_catch (int location, tree type_or_name, tree try_stmts,
15296 tree try_block, catch_clause_param, catch_block, catch;
15298 /* First build a try block */
15299 try_block = build_expr_block (try_stmts, NULL_TREE);
15301 /* Build a catch block: we need a catch clause parameter */
15302 if (TREE_CODE (type_or_name) == EXPR_WITH_FILE_LOCATION)
15304 tree catch_type = obtain_incomplete_type (type_or_name);
15306 catch_clause_param = build_decl (VAR_DECL, wpv_id, catch_type);
15307 register_incomplete_type (JDEP_VARIABLE, type_or_name,
15308 catch_clause_param, catch_type);
15309 dep = CLASSD_LAST (ctxp->classd_list);
15310 JDEP_GET_PATCH (dep) = &TREE_TYPE (catch_clause_param);
15313 catch_clause_param = build_decl (VAR_DECL, wpv_id,
15314 build_pointer_type (type_or_name));
15317 catch_block = build_expr_block (NULL_TREE, catch_clause_param);
15319 /* Initialize the variable and store in the block */
15320 catch = build2 (MODIFY_EXPR, NULL_TREE, catch_clause_param,
15321 build0 (JAVA_EXC_OBJ_EXPR, ptr_type_node));
15322 add_stmt_to_block (catch_block, NULL_TREE, catch);
15324 /* Add the catch statements */
15325 add_stmt_to_block (catch_block, NULL_TREE, catch_stmts);
15327 /* Now we can build a JAVA_CATCH_EXPR */
15328 catch_block = build1 (JAVA_CATCH_EXPR, NULL_TREE, catch_block);
15330 return build_try_statement (location, try_block, catch_block);
15334 build_try_statement (int location, tree try_block, tree catches)
15336 tree node = build2 (TRY_EXPR, NULL_TREE, try_block, catches);
15337 EXPR_WFL_LINECOL (node) = location;
15342 build_try_finally_statement (int location, tree try_block, tree finally)
15344 tree node = build2 (TRY_FINALLY_EXPR, NULL_TREE, try_block, finally);
15345 EXPR_WFL_LINECOL (node) = location;
15350 patch_try_statement (tree node)
15352 int error_found = 0;
15353 tree try = TREE_OPERAND (node, 0);
15354 /* Exception handlers are considered in left to right order */
15355 tree catch = nreverse (TREE_OPERAND (node, 1));
15356 tree current, caught_type_list = NULL_TREE;
15358 /* Check catch clauses, if any. Every time we find an error, we try
15359 to process the next catch clause. We process the catch clause before
15360 the try block so that when processing the try block we can check thrown
15361 exceptions againts the caught type list. */
15362 for (current = catch; current; current = TREE_CHAIN (current))
15364 tree carg_decl, carg_type;
15365 tree sub_current, catch_block, catch_clause;
15368 /* At this point, the structure of the catch clause is
15369 JAVA_CATCH_EXPR (catch node)
15370 BLOCK (with the decl of the parameter)
15372 MODIFY_EXPR (assignment of the catch parameter)
15373 BLOCK (catch clause block)
15375 catch_clause = TREE_OPERAND (current, 0);
15376 carg_decl = BLOCK_EXPR_DECLS (catch_clause);
15377 carg_type = TREE_TYPE (TREE_TYPE (carg_decl));
15379 /* Catch clauses can't have more than one parameter declared,
15380 but it's already enforced by the grammar. Make sure that the
15381 only parameter of the clause statement in of class Throwable
15382 or a subclass of Throwable, but that was done earlier. The
15383 catch clause parameter type has also been resolved. */
15385 /* Just make sure that the catch clause parameter type inherits
15386 from java.lang.Throwable */
15387 if (!inherits_from_p (carg_type, throwable_type_node))
15389 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
15390 parse_error_context (wfl_operator,
15391 "Can't catch class `%s'. Catch clause parameter type must be a subclass of class `java.lang.Throwable'",
15392 lang_printable_name (carg_type, 0));
15397 /* Partial check for unreachable catch statement: The catch
15398 clause is reachable iff is no earlier catch block A in
15399 the try statement such that the type of the catch
15400 clause's parameter is the same as or a subclass of the
15401 type of A's parameter */
15403 for (sub_current = catch;
15404 sub_current != current; sub_current = TREE_CHAIN (sub_current))
15406 tree sub_catch_clause, decl;
15407 sub_catch_clause = TREE_OPERAND (sub_current, 0);
15408 decl = BLOCK_EXPR_DECLS (sub_catch_clause);
15410 if (inherits_from_p (carg_type, TREE_TYPE (TREE_TYPE (decl))))
15412 EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
15413 parse_error_context
15415 "`catch' not reached because of the catch clause at line %d",
15416 EXPR_WFL_LINENO (sub_current));
15417 unreachable = error_found = 1;
15421 /* Complete the catch clause block */
15422 catch_block = java_complete_tree (TREE_OPERAND (current, 0));
15423 if (catch_block == error_mark_node)
15428 if (CAN_COMPLETE_NORMALLY (catch_block))
15429 CAN_COMPLETE_NORMALLY (node) = 1;
15430 TREE_OPERAND (current, 0) = catch_block;
15435 /* Things to do here: the exception must be thrown */
15437 /* Link this type to the caught type list */
15438 caught_type_list = tree_cons (NULL_TREE, carg_type, caught_type_list);
15441 PUSH_EXCEPTIONS (caught_type_list);
15442 if ((try = java_complete_tree (try)) == error_mark_node)
15444 if (CAN_COMPLETE_NORMALLY (try))
15445 CAN_COMPLETE_NORMALLY (node) = 1;
15448 /* Verification ends here */
15450 return error_mark_node;
15452 TREE_OPERAND (node, 0) = try;
15453 TREE_OPERAND (node, 1) = catch;
15454 TREE_TYPE (node) = void_type_node;
15458 /* 14.17 The synchronized Statement */
15461 patch_synchronized_statement (tree node, tree wfl_op1)
15463 tree expr = java_complete_tree (TREE_OPERAND (node, 0));
15464 tree block = TREE_OPERAND (node, 1);
15466 tree tmp, enter, exit, expr_decl, assignment;
15468 if (expr == error_mark_node)
15470 block = java_complete_tree (block);
15474 /* We might be trying to synchronize on a STRING_CST */
15475 if ((tmp = patch_string (expr)))
15478 /* The TYPE of expr must be a reference type */
15479 if (!JREFERENCE_TYPE_P (TREE_TYPE (expr)))
15481 SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
15482 parse_error_context (wfl_operator, "Incompatible type for `synchronized'. Can't convert `%s' to `java.lang.Object'",
15483 lang_printable_name (TREE_TYPE (expr), 0));
15484 return error_mark_node;
15487 if (flag_emit_xref)
15489 TREE_OPERAND (node, 0) = expr;
15490 TREE_OPERAND (node, 1) = java_complete_tree (block);
15491 CAN_COMPLETE_NORMALLY (node) = 1;
15495 /* Generate a try-finally for the synchronized statement, except
15496 that the handler that catches all throw exception calls
15497 _Jv_MonitorExit and then rethrow the exception.
15498 The synchronized statement is then implemented as:
15501 _Jv_MonitorEnter (expression)
15503 _Jv_MonitorExit (expression)
15507 e = _Jv_exception_info ();
15508 _Jv_MonitorExit (expression)
15512 expr_decl = build_decl (VAR_DECL, generate_name (), TREE_TYPE (expr));
15513 BUILD_MONITOR_ENTER (enter, expr_decl);
15514 BUILD_MONITOR_EXIT (exit, expr_decl);
15515 CAN_COMPLETE_NORMALLY (enter) = 1;
15516 CAN_COMPLETE_NORMALLY (exit) = 1;
15517 assignment = build2 (MODIFY_EXPR, NULL_TREE, expr_decl, expr);
15518 TREE_SIDE_EFFECTS (assignment) = 1;
15519 node = build2 (COMPOUND_EXPR, NULL_TREE,
15520 build2 (COMPOUND_EXPR, NULL_TREE, assignment, enter),
15521 build2 (TRY_FINALLY_EXPR, NULL_TREE, block, exit));
15522 node = build_expr_block (node, expr_decl);
15524 return java_complete_tree (node);
15527 /* 14.16 The throw Statement */
15530 patch_throw_statement (tree node, tree wfl_op1)
15532 tree expr = TREE_OPERAND (node, 0);
15533 tree type = TREE_TYPE (expr);
15534 int unchecked_ok = 0, tryblock_throws_ok = 0;
15536 /* Thrown expression must be assignable to java.lang.Throwable */
15537 if (!try_reference_assignconv (throwable_type_node, expr))
15539 SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
15540 parse_error_context (wfl_operator,
15541 "Can't throw `%s'; it must be a subclass of class `java.lang.Throwable'",
15542 lang_printable_name (type, 0));
15543 /* If the thrown expression was a reference, we further the
15544 compile-time check. */
15545 if (!JREFERENCE_TYPE_P (type))
15546 return error_mark_node;
15549 /* At least one of the following must be true */
15551 /* The type of the throw expression is a not checked exception,
15552 i.e. is a unchecked expression. */
15553 unchecked_ok = IS_UNCHECKED_EXCEPTION_P (TREE_TYPE (type));
15555 SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
15556 /* An instance can't throw a checked exception unless that exception
15557 is explicitly declared in the `throws' clause of each
15558 constructor. This doesn't apply to anonymous classes, since they
15559 don't have declared constructors. */
15561 && DECL_INSTINIT_P (current_function_decl)
15562 && !ANONYMOUS_CLASS_P (current_class))
15565 for (current = TYPE_METHODS (current_class); current;
15566 current = TREE_CHAIN (current))
15567 if (DECL_CONSTRUCTOR_P (current)
15568 && !check_thrown_exceptions_do (TREE_TYPE (expr)))
15570 parse_error_context (wfl_operator, "Checked exception `%s' can't be thrown in instance initializer (not all declared constructor are declaring it in their `throws' clause)",
15571 lang_printable_name (TREE_TYPE (expr), 0));
15572 return error_mark_node;
15576 /* Throw is contained in a try statement and at least one catch
15577 clause can receive the thrown expression or the current method is
15578 declared to throw such an exception. Or, the throw statement is
15579 contained in a method or constructor declaration and the type of
15580 the Expression is assignable to at least one type listed in the
15581 throws clause the declaration. */
15583 tryblock_throws_ok = check_thrown_exceptions_do (TREE_TYPE (expr));
15584 if (!(unchecked_ok || tryblock_throws_ok))
15586 /* If there is a surrounding try block that has no matching
15587 clatch clause, report it first. A surrounding try block exits
15588 only if there is something after the list of checked
15589 exception thrown by the current function (if any). */
15590 if (IN_TRY_BLOCK_P ())
15591 parse_error_context (wfl_operator, "Checked exception `%s' can't be caught by any of the catch clause(s) of the surrounding `try' block",
15592 lang_printable_name (type, 0));
15593 /* If we have no surrounding try statement and the method doesn't have
15594 any throws, report it now. FIXME */
15596 /* We report that the exception can't be throw from a try block
15597 in all circumstances but when the `throw' is inside a static
15599 else if (!EXCEPTIONS_P (currently_caught_type_list)
15600 && !tryblock_throws_ok)
15602 if (DECL_CLINIT_P (current_function_decl))
15603 parse_error_context (wfl_operator,
15604 "Checked exception `%s' can't be thrown in initializer",
15605 lang_printable_name (type, 0));
15607 parse_error_context (wfl_operator,
15608 "Checked exception `%s' isn't thrown from a `try' block",
15609 lang_printable_name (type, 0));
15611 /* Otherwise, the current method doesn't have the appropriate
15612 throws declaration */
15614 parse_error_context (wfl_operator, "Checked exception `%s' doesn't match any of current method's `throws' declaration(s)",
15615 lang_printable_name (type, 0));
15616 return error_mark_node;
15619 if (! flag_emit_class_files && ! flag_emit_xref)
15620 BUILD_THROW (node, expr);
15622 /* If doing xrefs, keep the location where the `throw' was seen. */
15623 if (flag_emit_xref)
15624 EXPR_WFL_LINECOL (node) = EXPR_WFL_LINECOL (wfl_op1);
15628 /* Check that exception said to be thrown by method DECL can be
15629 effectively caught from where DECL is invoked. THIS_EXPR is the
15630 expression that computes `this' for the method call. */
15632 check_thrown_exceptions (int location, tree decl, tree this_expr)
15635 int is_array_call = 0;
15637 /* Skip check within generated methods, such as access$<n>. */
15638 if (OUTER_FIELD_ACCESS_IDENTIFIER_P (DECL_NAME (current_function_decl)))
15641 if (this_expr != NULL_TREE
15642 && TREE_CODE (TREE_TYPE (this_expr)) == POINTER_TYPE
15643 && TYPE_ARRAY_P (TREE_TYPE (TREE_TYPE (this_expr))))
15646 /* For all the unchecked exceptions thrown by DECL. */
15647 for (throws = DECL_FUNCTION_THROWS (decl); throws;
15648 throws = TREE_CHAIN (throws))
15649 if (!check_thrown_exceptions_do (TREE_VALUE (throws)))
15651 /* Suppress errors about cloning arrays. */
15652 if (is_array_call && DECL_NAME (decl) == get_identifier ("clone"))
15655 EXPR_WFL_LINECOL (wfl_operator) = location;
15656 if (DECL_FINIT_P (current_function_decl))
15657 parse_error_context
15658 (wfl_operator, "Exception `%s' can't be thrown in initializer",
15659 lang_printable_name (TREE_VALUE (throws), 0));
15662 parse_error_context
15663 (wfl_operator, "Exception `%s' must be caught, or it must be declared in the `throws' clause of `%s'",
15664 lang_printable_name (TREE_VALUE (throws), 0),
15665 (DECL_INIT_P (current_function_decl) ?
15666 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))) :
15667 IDENTIFIER_POINTER (DECL_NAME (current_function_decl))));
15672 /* Return 1 if checked EXCEPTION is caught at the current nesting level of
15673 try-catch blocks, OR is listed in the `throws' clause of the
15677 check_thrown_exceptions_do (tree exception)
15679 tree list = currently_caught_type_list;
15680 resolve_and_layout (exception, NULL_TREE);
15681 /* First, all the nested try-catch-finally at that stage. The
15682 last element contains `throws' clause exceptions, if any. */
15683 if (IS_UNCHECKED_EXCEPTION_P (exception))
15688 for (caught = TREE_VALUE (list); caught; caught = TREE_CHAIN (caught))
15689 if (valid_ref_assignconv_cast_p (exception, TREE_VALUE (caught), 0))
15691 list = TREE_CHAIN (list);
15697 purge_unchecked_exceptions (tree mdecl)
15699 tree throws = DECL_FUNCTION_THROWS (mdecl);
15700 tree new = NULL_TREE;
15704 tree next = TREE_CHAIN (throws);
15705 if (!IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (throws)))
15707 TREE_CHAIN (throws) = new;
15712 /* List is inverted here, but it doesn't matter */
15713 DECL_FUNCTION_THROWS (mdecl) = new;
15716 /* This function goes over all of CLASS_TYPE ctors and checks whether
15717 each of them features at least one unchecked exception in its
15718 `throws' clause. If it's the case, it returns `true', `false'
15722 ctors_unchecked_throws_clause_p (tree class_type)
15726 for (current = TYPE_METHODS (class_type); current;
15727 current = TREE_CHAIN (current))
15729 bool ctu = false; /* Ctor Throws Unchecked */
15730 if (DECL_CONSTRUCTOR_P (current))
15733 for (throws = DECL_FUNCTION_THROWS (current); throws && !ctu;
15734 throws = TREE_CHAIN (throws))
15735 if (inherits_from_p (TREE_VALUE (throws), exception_type_node))
15738 /* We return false as we found one ctor that is unfit. */
15739 if (!ctu && DECL_CONSTRUCTOR_P (current))
15742 /* All ctors feature at least one unchecked exception in their
15743 `throws' clause. */
15747 /* 15.24 Conditional Operator ?: */
15750 patch_conditional_expr (tree node, tree wfl_cond, tree wfl_op1)
15752 tree cond = TREE_OPERAND (node, 0);
15753 tree op1 = TREE_OPERAND (node, 1);
15754 tree op2 = TREE_OPERAND (node, 2);
15755 tree resulting_type = NULL_TREE;
15756 tree t1, t2, patched;
15757 int error_found = 0;
15759 /* Operands of ?: might be StringBuffers crafted as a result of a
15760 string concatenation. Obtain a descent operand here. */
15761 if ((patched = patch_string (op1)))
15762 TREE_OPERAND (node, 1) = op1 = patched;
15763 if ((patched = patch_string (op2)))
15764 TREE_OPERAND (node, 2) = op2 = patched;
15766 t1 = TREE_TYPE (op1);
15767 t2 = TREE_TYPE (op2);
15769 /* The first expression must be a boolean */
15770 if (TREE_TYPE (cond) != boolean_type_node)
15772 SET_WFL_OPERATOR (wfl_operator, node, wfl_cond);
15773 parse_error_context (wfl_operator,
15774 "Incompatible type for `?:'. Can't convert `%s' to `boolean'",
15775 lang_printable_name (TREE_TYPE (cond), 0));
15779 /* Second and third can be numeric, boolean (i.e. primitive),
15780 references or null. Anything else results in an error */
15781 if (!((JNUMERIC_TYPE_P (t1) && JNUMERIC_TYPE_P (t2))
15782 || ((JREFERENCE_TYPE_P (t1) || op1 == null_pointer_node)
15783 && (JREFERENCE_TYPE_P (t2) || op2 == null_pointer_node))
15784 || (t1 == boolean_type_node && t2 == boolean_type_node)))
15787 /* Determine the type of the conditional expression. Same types are
15788 easy to deal with */
15790 resulting_type = t1;
15792 /* There are different rules for numeric types */
15793 else if (JNUMERIC_TYPE_P (t1))
15795 /* if byte/short found, the resulting type is short */
15796 if ((t1 == byte_type_node && t2 == short_type_node)
15797 || (t1 == short_type_node && t2 == byte_type_node))
15798 resulting_type = short_type_node;
15800 /* If t1 is a constant int and t2 is of type byte, short or char
15801 and t1's value fits in t2, then the resulting type is t2 */
15802 else if ((t1 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 1)))
15803 && JBSC_TYPE_P (t2) && int_fits_type_p (TREE_OPERAND (node, 1), t2))
15804 resulting_type = t2;
15806 /* If t2 is a constant int and t1 is of type byte, short or char
15807 and t2's value fits in t1, then the resulting type is t1 */
15808 else if ((t2 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 2)))
15809 && JBSC_TYPE_P (t1) && int_fits_type_p (TREE_OPERAND (node, 2), t1))
15810 resulting_type = t1;
15812 /* Otherwise, binary numeric promotion is applied and the
15813 resulting type is the promoted type of operand 1 and 2 */
15815 resulting_type = binary_numeric_promotion (t1, t2,
15816 &TREE_OPERAND (node, 1),
15817 &TREE_OPERAND (node, 2));
15820 /* Cases of a reference and a null type */
15821 else if (JREFERENCE_TYPE_P (t1) && op2 == null_pointer_node)
15822 resulting_type = t1;
15824 else if (JREFERENCE_TYPE_P (t2) && op1 == null_pointer_node)
15825 resulting_type = t2;
15827 /* Last case: different reference types. If a type can be converted
15828 into the other one by assignment conversion, the latter
15829 determines the type of the expression */
15830 else if ((resulting_type = try_reference_assignconv (t1, op2)))
15831 resulting_type = promote_type (t1);
15833 else if ((resulting_type = try_reference_assignconv (t2, op1)))
15834 resulting_type = promote_type (t2);
15836 /* If we don't have any resulting type, we're in trouble */
15837 if (!resulting_type)
15839 char *t = xstrdup (lang_printable_name (t1, 0));
15840 SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
15841 parse_error_context (wfl_operator,
15842 "Incompatible type for `?:'. Can't convert `%s' to `%s'",
15843 t, lang_printable_name (t2, 0));
15850 TREE_TYPE (node) = error_mark_node;
15851 return error_mark_node;
15854 TREE_TYPE (node) = resulting_type;
15855 TREE_SET_CODE (node, COND_EXPR);
15856 CAN_COMPLETE_NORMALLY (node) = 1;
15860 /* Wrap EXPR with code to initialize DECL's class, if appropriate. */
15863 maybe_build_class_init_for_field (tree decl, tree expr)
15865 tree clas = DECL_CONTEXT (decl);
15866 if (flag_emit_class_files || flag_emit_xref)
15869 if (TREE_CODE (decl) == VAR_DECL && FIELD_STATIC (decl)
15870 && FIELD_FINAL (decl))
15872 tree init = DECL_INITIAL (decl);
15873 if (init != NULL_TREE)
15874 init = fold_constant_for_init (init, decl);
15875 if (init != NULL_TREE && CONSTANT_VALUE_P (init))
15879 return build_class_init (clas, expr);
15882 /* Try to constant fold NODE.
15883 If NODE is not a constant expression, return NULL_EXPR.
15884 CONTEXT is a static final VAR_DECL whose initializer we are folding. */
15887 fold_constant_for_init (tree node, tree context)
15889 tree op0, op1, val;
15890 enum tree_code code = TREE_CODE (node);
15895 if (node == null_pointer_node)
15904 case TRUNC_MOD_EXPR:
15912 case TRUTH_ANDIF_EXPR:
15913 case TRUTH_ORIF_EXPR:
15920 op0 = TREE_OPERAND (node, 0);
15921 op1 = TREE_OPERAND (node, 1);
15922 val = fold_constant_for_init (op0, context);
15923 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15925 TREE_OPERAND (node, 0) = val;
15926 val = fold_constant_for_init (op1, context);
15927 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15929 TREE_OPERAND (node, 1) = val;
15930 return patch_binop (node, op0, op1);
15932 case UNARY_PLUS_EXPR:
15934 case TRUTH_NOT_EXPR:
15937 op0 = TREE_OPERAND (node, 0);
15938 val = fold_constant_for_init (op0, context);
15939 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15941 TREE_OPERAND (node, 0) = val;
15942 val = patch_unaryop (node, op0);
15943 if (! TREE_CONSTANT (val))
15950 val = fold_constant_for_init (TREE_OPERAND (node, 0), context);
15951 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15953 TREE_OPERAND (node, 0) = val;
15954 val = fold_constant_for_init (TREE_OPERAND (node, 1), context);
15955 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15957 TREE_OPERAND (node, 1) = val;
15958 val = fold_constant_for_init (TREE_OPERAND (node, 2), context);
15959 if (val == NULL_TREE || ! TREE_CONSTANT (val))
15961 TREE_OPERAND (node, 2) = val;
15962 return integer_zerop (TREE_OPERAND (node, 0)) ? TREE_OPERAND (node, 1)
15963 : TREE_OPERAND (node, 2);
15967 if (! FIELD_FINAL (node)
15968 || DECL_INITIAL (node) == NULL_TREE)
15970 val = DECL_INITIAL (node);
15971 /* Guard against infinite recursion. */
15972 DECL_INITIAL (node) = NULL_TREE;
15973 val = fold_constant_for_init (val, node);
15974 if (val != NULL_TREE && TREE_CODE (val) != STRING_CST)
15975 val = try_builtin_assignconv (NULL_TREE, TREE_TYPE (node), val);
15976 DECL_INITIAL (node) = val;
15979 case EXPR_WITH_FILE_LOCATION:
15980 /* Compare java_complete_tree and resolve_expression_name. */
15981 if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
15982 || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
15984 tree name = EXPR_WFL_NODE (node);
15986 if (PRIMARY_P (node))
15988 else if (! QUALIFIED_P (name))
15990 decl = lookup_field_wrapper (DECL_CONTEXT (context), name);
15991 if (decl == NULL_TREE
15992 || (! FIELD_STATIC (decl) && ! FIELD_FINAL (decl)))
15994 return fold_constant_for_init (decl, decl);
15998 tree r = NULL_TREE;
15999 /* Install the proper context for the field resolution. */
16000 tree saved_current_class = current_class;
16001 /* Wait until the USE_COMPONENT_REF re-write. FIXME. */
16002 current_class = DECL_CONTEXT (context);
16003 qualify_ambiguous_name (node);
16004 r = resolve_field_access (node, &decl, NULL);
16005 /* Restore prior context. */
16006 current_class = saved_current_class;
16007 if (r != error_mark_node && decl != NULL_TREE)
16008 return fold_constant_for_init (decl, decl);
16014 op0 = TREE_OPERAND (node, 0);
16015 val = fold_constant_for_init (op0, context);
16016 if (val == NULL_TREE || ! TREE_CONSTANT (val))
16018 TREE_OPERAND (node, 0) = val;
16022 #ifdef USE_COMPONENT_REF
16024 case COMPONENT_REF:
16033 #ifdef USE_COMPONENT_REF
16034 /* Context is 'T' for TypeName, 'P' for PackageName,
16035 'M' for MethodName, 'E' for ExpressionName, and 'A' for AmbiguousName. */
16038 resolve_simple_name (tree name, int context)
16043 resolve_qualified_name (tree name, int context)
16049 init_src_parse (void)
16051 /* Sanity check; we've been bit by this before. */
16052 if (ARRAY_SIZE (ctxp->modifier_ctx) != MODIFIER_TK - PUBLIC_TK)
16058 /* This section deals with the functions that are called when tables
16059 recording class initialization information are traversed. */
16061 /* Attach to PTR (a block) the declaration found in ENTRY. */
16064 attach_init_test_initialization_flags (void **entry, void *ptr)
16066 tree block = (tree)ptr;
16067 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
16069 if (block != error_mark_node)
16071 TREE_CHAIN (ite->value) = BLOCK_EXPR_DECLS (block);
16072 BLOCK_EXPR_DECLS (block) = ite->value;
16077 /* This function is called for each class that is known definitely
16078 initialized when a given static method was called. This function
16079 augments a compound expression (INFO) storing all assignment to
16080 initialized static class flags if a flag already existed, otherwise
16081 a new one is created. */
16084 emit_test_initialization (void **entry_p, void *info)
16086 tree l = (tree) info;
16088 tree key = (tree) *entry_p;
16090 htab_t cf_ht = DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl);
16092 /* If we haven't found a flag and we're dealing with self registered
16093 with current_function_decl, then don't do anything. Self is
16094 always added as definitely initialized but this information is
16095 valid only if used outside the current function. */
16096 if (current_function_decl == TREE_PURPOSE (l)
16097 && java_treetreehash_find (cf_ht, key) == NULL)
16100 ite = java_treetreehash_new (cf_ht, key);
16102 /* If we don't have a variable, create one and install it. */
16107 decl = build_decl (VAR_DECL, NULL_TREE, boolean_type_node);
16108 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
16109 LOCAL_CLASS_INITIALIZATION_FLAG (decl) = 1;
16110 DECL_CONTEXT (decl) = current_function_decl;
16111 DECL_INITIAL (decl) = boolean_true_node;
16112 /* Don't emit any symbolic debugging info for this decl. */
16113 DECL_IGNORED_P (decl) = 1;
16115 /* The trick is to find the right context for it. */
16116 block = BLOCK_SUBBLOCKS (GET_CURRENT_BLOCK (current_function_decl));
16117 TREE_CHAIN (decl) = BLOCK_EXPR_DECLS (block);
16118 BLOCK_EXPR_DECLS (block) = decl;
16124 /* Now simply augment the compound that holds all the assignments
16125 pertaining to this method invocation. */
16126 init = build2 (MODIFY_EXPR, boolean_type_node, decl, boolean_true_node);
16127 TREE_SIDE_EFFECTS (init) = 1;
16128 TREE_VALUE (l) = add_stmt_to_compound (TREE_VALUE (l), void_type_node, init);
16129 TREE_SIDE_EFFECTS (TREE_VALUE (l)) = 1;
16134 #include "gt-java-parse.h"
16135 #include "gtype-java.h"