1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
22 Java and all Java-based marks are trademarks or registered trademarks
23 of Sun Microsystems, Inc. in the United States and other countries.
24 The Free Software Foundation is independent of Sun Microsystems, Inc. */
26 /* Written by Per Bothner <bothner@cygnus.com> */
30 #include "coretypes.h"
36 #include "java-except.h"
38 #include "java-tree.h"
51 #ifdef HAVE_LANGINFO_CODESET
55 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
56 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
57 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
58 #define JPOOL_UTF_DATA(JCF, INDEX) \
59 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
60 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
62 unsigned char save; unsigned char *text; \
63 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
64 text = (JCF)->read_ptr; \
65 save = text[LENGTH]; \
67 (JCF)->cpool.data[INDEX].t = get_identifier ((const char *) text); \
68 text[LENGTH] = save; \
69 JCF_SKIP (JCF, LENGTH); } while (0)
73 extern struct obstack temporary_obstack;
75 static GTY(()) tree parse_roots[3];
77 /* The FIELD_DECL for the current field. */
78 #define current_field parse_roots[0]
80 /* The METHOD_DECL for the current method. */
81 #define current_method parse_roots[1]
83 /* A list of file names. */
84 #define current_file_list parse_roots[2]
86 /* The Java archive that provides main_class; the main input file. */
87 static GTY(()) struct JCF * main_jcf;
89 static struct ZipFile *localToFile;
91 /* Declarations of some functions used here. */
92 static void handle_innerclass_attribute (int count, JCF *);
93 static tree give_name_to_class (JCF *jcf, int index);
94 static char *compute_class_name (struct ZipDirectory *zdir);
95 static int classify_zip_file (struct ZipDirectory *zdir);
96 static void parse_zip_file_entries (void);
97 static void process_zip_dir (FILE *);
98 static void parse_source_file_1 (tree, FILE *);
99 static void parse_source_file_2 (void);
100 static void parse_source_file_3 (void);
101 static void parse_class_file (void);
102 static void handle_deprecated (void);
103 static void set_source_filename (JCF *, int);
104 static void jcf_parse (struct JCF*);
105 static void load_inner_classes (tree);
107 /* Handle "Deprecated" attribute. */
109 handle_deprecated (void)
111 if (current_field != NULL_TREE)
112 FIELD_DEPRECATED (current_field) = 1;
113 else if (current_method != NULL_TREE)
114 METHOD_DEPRECATED (current_method) = 1;
115 else if (current_class != NULL_TREE)
116 CLASS_DEPRECATED (TYPE_NAME (current_class)) = 1;
119 /* Shouldn't happen. */
124 /* Handle "SourceFile" attribute. */
127 set_source_filename (JCF *jcf, int index)
129 tree sfname_id = get_name_constant (jcf, index);
130 const char *sfname = IDENTIFIER_POINTER (sfname_id);
131 if (input_filename != NULL)
133 int old_len = strlen (input_filename);
134 int new_len = IDENTIFIER_LENGTH (sfname_id);
135 /* Use the current input_filename (derived from the class name)
136 if it has a directory prefix, but otherwise matches sfname. */
137 if (old_len > new_len
138 && strcmp (sfname, input_filename + old_len - new_len) == 0
139 && (input_filename[old_len - new_len - 1] == '/'
140 || input_filename[old_len - new_len - 1] == '\\'))
143 input_filename = sfname;
144 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
145 if (current_class == main_class) main_input_filename = input_filename;
148 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
150 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
151 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
152 output_class = current_class = give_name_to_class (jcf, THIS); \
153 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
155 #define HANDLE_CLASS_INTERFACE(INDEX) \
156 add_interface (current_class, get_class_constant (jcf, INDEX))
158 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
159 { int sig_index = SIGNATURE; \
160 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
161 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
162 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
163 if ((ACCESS_FLAGS) & ACC_FINAL) \
164 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
167 #define HANDLE_END_FIELDS() \
168 (current_field = NULL_TREE)
170 #define HANDLE_CONSTANTVALUE(INDEX) \
171 { tree constant; int index = INDEX; \
172 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
173 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
174 constant = build_utf8_ref (name); \
177 constant = get_constant (jcf, index); \
178 set_constant_value (current_field, constant); }
180 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
181 (current_method = add_method (current_class, ACCESS_FLAGS, \
182 get_name_constant (jcf, NAME), \
183 get_name_constant (jcf, SIGNATURE)), \
184 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
185 DECL_LINENUMBERS_OFFSET (current_method) = 0)
187 #define HANDLE_END_METHODS() \
188 { current_method = NULL_TREE; }
190 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
191 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
192 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
193 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
194 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
196 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
198 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
199 JCF_SKIP (jcf, n * 10); }
201 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
203 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
204 JCF_SKIP (jcf, n * 4); }
206 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
209 tree list = DECL_FUNCTION_THROWS (current_method); \
212 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
213 list = tree_cons (NULL_TREE, thrown_class, list); \
215 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
218 #define HANDLE_DEPRECATED_ATTRIBUTE() handle_deprecated ()
220 /* Link seen inner classes to their outer context and register the
221 inner class to its outer context. They will be later loaded. */
222 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
223 handle_innerclass_attribute (COUNT, jcf)
225 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
227 /* Irrelevant decls should have been nullified by the END macros. \
228 We only handle the `Synthetic' attribute on method DECLs. \
229 DECL_ARTIFICIAL on fields is used for something else (See \
230 PUSH_FIELD in java-tree.h) */ \
231 if (current_method) \
232 DECL_ARTIFICIAL (current_method) = 1; \
235 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
237 if (current_class == object_type_node) \
238 jcf->right_zip = 1; \
241 #include "jcf-reader.c"
244 parse_signature (JCF *jcf, int sig_index)
246 if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
247 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
250 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
251 JPOOL_UTF_LENGTH (jcf, sig_index));
255 get_constant (JCF *jcf, int index)
259 if (index <= 0 || index >= JPOOL_SIZE(jcf))
261 tag = JPOOL_TAG (jcf, index);
262 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
263 return jcf->cpool.data[index].t;
266 case CONSTANT_Integer:
268 jint num = JPOOL_INT(jcf, index);
269 value = build_int_2 (num, num < 0 ? -1 : 0);
270 TREE_TYPE (value) = int_type_node;
275 unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
276 unsigned HOST_WIDE_INT lo;
279 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
280 num = JPOOL_UINT (jcf, index+1);
281 add_double (lo, hi, num, 0, &lo, &hi);
282 value = build_int_2 (lo, hi);
283 TREE_TYPE (value) = long_type_node;
284 value = force_fit_type (value, 0, false, false);
290 jint num = JPOOL_INT(jcf, index);
294 real_from_target_fmt (&d, &buf, &ieee_single_format);
295 value = build_real (float_type_node, d);
299 case CONSTANT_Double:
304 hi = JPOOL_UINT (jcf, index);
305 lo = JPOOL_UINT (jcf, index+1);
307 if (FLOAT_WORDS_BIG_ENDIAN)
308 buf[0] = hi, buf[1] = lo;
310 buf[0] = lo, buf[1] = hi;
312 real_from_target_fmt (&d, buf, &ieee_double_format);
313 value = build_real (double_type_node, d);
317 case CONSTANT_String:
319 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
320 const char *utf8_ptr = IDENTIFIER_POINTER (name);
321 int utf8_len = IDENTIFIER_LENGTH (name);
322 const unsigned char *utf8;
325 /* Check for a malformed Utf8 string. */
326 utf8 = (const unsigned char *) utf8_ptr;
330 int char_len = UT8_CHAR_LENGTH (*utf8);
331 if (char_len < 0 || char_len > 3 || char_len > i)
332 fatal_error ("bad string constant");
338 /* Allocate a new string value. */
339 value = build_string (utf8_len, utf8_ptr);
340 TREE_TYPE (value) = build_pointer_type (string_type_node);
346 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
347 jcf->cpool.data[index].t = value;
350 internal_error ("bad value constant type %d, index %d",
351 JPOOL_TAG (jcf, index), index);
355 get_name_constant (JCF *jcf, int index)
357 tree name = get_constant (jcf, index);
359 if (TREE_CODE (name) != IDENTIFIER_NODE)
365 /* Handle reading innerclass attributes. If a nonzero entry (denoting
366 a non anonymous entry) is found, We augment the inner class list of
367 the outer context with the newly resolved innerclass. */
370 handle_innerclass_attribute (int count, JCF *jcf)
375 /* Read inner_class_info_index. This may be 0 */
376 int icii = JCF_readu2 (jcf);
377 /* Read outer_class_info_index. If the innerclasses attribute
378 entry isn't a member (like an inner class) the value is 0. */
379 int ocii = JCF_readu2 (jcf);
380 /* Read inner_name_index. If the class we're dealing with is
381 an anonymous class, it must be 0. */
382 int ini = JCF_readu2 (jcf);
383 /* Read the access flag. */
384 int acc = JCF_readu2 (jcf);
385 /* If icii is 0, don't try to read the class. */
388 tree class = get_class_constant (jcf, icii);
389 tree decl = TYPE_NAME (class);
390 /* Skip reading further if ocii is null */
391 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
393 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
394 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
395 set_class_decl_access_flags (acc, decl);
396 DECL_CONTEXT (decl) = outer;
397 DECL_INNER_CLASS_LIST (outer) =
398 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
399 CLASS_COMPLETE_P (decl) = 1;
406 give_name_to_class (JCF *jcf, int i)
408 if (i <= 0 || i >= JPOOL_SIZE (jcf)
409 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
414 int j = JPOOL_USHORT1 (jcf, i);
415 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
416 tree class_name = unmangle_classname ((const char *) JPOOL_UTF_DATA (jcf, j),
417 JPOOL_UTF_LENGTH (jcf, j));
418 this_class = lookup_class (class_name);
419 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
421 if (main_input_filename == NULL && jcf == main_jcf)
422 main_input_filename = input_filename;
424 jcf->cpool.data[i].t = this_class;
425 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
430 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
433 get_class_constant (JCF *jcf, int i)
436 if (i <= 0 || i >= JPOOL_SIZE (jcf)
437 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
440 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
442 int name_index = JPOOL_USHORT1 (jcf, i);
443 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
444 const char *name = (const char *) JPOOL_UTF_DATA (jcf, name_index);
445 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
447 if (name[0] == '[') /* Handle array "classes". */
448 type = TREE_TYPE (parse_signature_string ((const unsigned char *) name, nlength));
451 tree cname = unmangle_classname (name, nlength);
452 type = lookup_class (cname);
454 jcf->cpool.data[i].t = type;
455 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
458 type = jcf->cpool.data[i].t;
462 /* Read a class with the fully qualified-name NAME.
463 Return 1 iff we read the requested file.
464 (It is still possible we failed if the file did not
465 define the class it is supposed to.) */
468 read_class (tree name)
471 tree icv, class = NULL_TREE;
472 tree save_current_class = current_class;
473 tree save_output_class = output_class;
474 location_t save_location = input_location;
475 JCF *save_current_jcf = current_jcf;
477 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
479 class = TREE_TYPE (icv);
480 jcf = TYPE_JCF (class);
487 this_jcf.zipd = NULL;
489 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
496 if (current_jcf->java_source)
498 const char *filename = current_jcf->filename;
499 tree given_file, real_file;
503 java_parser_context_save_global ();
504 java_push_parser_context ();
506 given_file = get_identifier (filename);
507 real_file = get_identifier (lrealpath (filename));
509 generate = IS_A_COMMAND_LINE_FILENAME_P (given_file);
510 if (wfl_operator == NULL_TREE)
511 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
512 EXPR_WFL_FILENAME_NODE (wfl_operator) = given_file;
513 input_filename = ggc_strdup (filename);
514 output_class = current_class = NULL_TREE;
515 current_function_decl = NULL_TREE;
517 if (! HAS_BEEN_ALREADY_PARSED_P (real_file))
519 if (! (finput = fopen (input_filename, "r")))
520 fatal_error ("can't reopen %s: %m", input_filename);
522 parse_source_file_1 (real_file, finput);
523 parse_source_file_2 ();
524 parse_source_file_3 ();
527 fatal_error ("can't close %s: %m", input_filename);
529 JCF_FINISH (current_jcf);
530 java_pop_parser_context (generate);
531 java_parser_context_restore_global ();
535 if (class == NULL_TREE || ! CLASS_PARSED_P (class))
537 java_parser_context_save_global ();
538 java_push_parser_context ();
539 output_class = current_class = class;
540 input_filename = current_jcf->filename;
541 if (JCF_SEEN_IN_ZIP (current_jcf))
542 read_zip_member(current_jcf,
543 current_jcf->zipd, current_jcf->zipd->zipf);
544 jcf_parse (current_jcf);
545 /* Parsing might change the class, in which case we have to
546 put it back where we found it. */
547 if (current_class != class && icv != NULL_TREE)
548 TREE_TYPE (icv) = current_class;
549 class = current_class;
550 java_pop_parser_context (0);
551 java_parser_context_restore_global ();
553 layout_class (class);
554 load_inner_classes (class);
557 output_class = save_output_class;
558 current_class = save_current_class;
559 input_location = save_location;
560 current_jcf = save_current_jcf;
564 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
565 called from the parser, otherwise it's a RECORD_TYPE node. If
566 VERBOSE is 1, print error message on failure to load a class. */
568 load_class (tree class_or_name, int verbose)
573 /* class_or_name can be the name of the class we want to load */
574 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
575 name = class_or_name;
576 /* In some cases, it's a dependency that we process earlier that
578 else if (TREE_CODE (class_or_name) == TREE_LIST)
579 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
580 /* Or it's a type in the making */
583 /* If the class is from source code, then it must already be loaded. */
584 if (CLASS_FROM_SOURCE_P (class_or_name))
586 name = DECL_NAME (TYPE_NAME (class_or_name));
594 if ((class_loaded = read_class (name)))
597 /* We failed loading name. Now consider that we might be looking
598 for a inner class. */
599 if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
600 || (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
604 name = get_identifier (IDENTIFIER_POINTER (name));
607 /* Otherwise, we failed, we bail. */
612 if (!class_loaded && verbose)
613 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
616 /* Parse the .class file JCF. */
623 if (jcf_parse_preamble (jcf) != 0)
624 fatal_error ("not a valid Java .class file");
625 code = jcf_parse_constant_pool (jcf);
627 fatal_error ("error while parsing constant pool");
628 code = verify_constant_pool (jcf);
630 fatal_error ("error in constant pool entry #%d\n", code);
632 jcf_parse_class (jcf);
633 if (main_class == NULL_TREE)
634 main_class = current_class;
635 if (! quiet_flag && TYPE_NAME (current_class))
636 fprintf (stderr, " %s %s",
637 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
638 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
639 if (CLASS_PARSED_P (current_class))
641 /* FIXME - where was first time */
642 fatal_error ("reading class %s for the second time from %s",
643 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
646 CLASS_PARSED_P (current_class) = 1;
648 for (i = 1; i < JPOOL_SIZE(jcf); i++)
650 switch (JPOOL_TAG (jcf, i))
653 get_class_constant (jcf, i);
658 code = jcf_parse_fields (jcf);
660 fatal_error ("error while parsing fields");
661 code = jcf_parse_methods (jcf);
663 fatal_error ("error while parsing methods");
664 code = jcf_parse_final_attributes (jcf);
666 fatal_error ("error while parsing final attributes");
668 /* The fields of class_type_node are already in correct order. */
669 if (current_class != class_type_node && current_class != object_type_node)
670 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
672 if (current_class == object_type_node)
674 layout_class_methods (object_type_node);
675 /* If we don't have the right archive, emit a verbose warning.
676 If we're generating bytecode, emit the warning only if
677 -fforce-classes-archive-check was specified. */
679 && (!flag_emit_class_files || flag_force_classes_archive_check))
680 fatal_error ("the `java.lang.Object' that was found in `%s' didn't have the special zero-length `gnu.gcj.gcj-compiled' attribute. This generally means that your classpath is incorrectly set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath", jcf->filename);
683 all_class_list = tree_cons (NULL_TREE,
684 TYPE_NAME (current_class), all_class_list );
687 /* If we came across inner classes, load them now. */
689 load_inner_classes (tree cur_class)
692 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
693 current = TREE_CHAIN (current))
695 tree name = DECL_NAME (TREE_PURPOSE (current));
696 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
697 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
698 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
699 load_class (name, 1);
704 parse_class_file (void)
707 location_t save_location = input_location;
709 java_layout_seen_class_methods ();
711 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
713 (*debug_hooks->start_source_file) (input_line, input_filename);
715 /* Currently we always have to emit calls to _Jv_InitClass when
716 compiling from class files. */
717 always_initialize_class_p = 1;
719 gen_indirect_dispatch_tables (current_class);
721 java_mark_class_local (current_class);
723 for (method = TYPE_METHODS (current_class);
724 method != NULL_TREE; method = TREE_CHAIN (method))
726 JCF *jcf = current_jcf;
728 if (METHOD_ABSTRACT (method))
731 if (METHOD_NATIVE (method))
738 /* We need to compute the DECL_MAX_LOCALS. We need to take
739 the wide types into account too. */
740 for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
741 arg != end_params_node;
742 arg = TREE_CHAIN (arg), decl_max_locals += 1)
744 if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
745 decl_max_locals += 1;
747 DECL_MAX_LOCALS (method) = decl_max_locals;
748 start_java_method (method);
749 give_name_to_locals (jcf);
750 *get_stmts () = build_jni_stub (method);
755 if (DECL_CODE_OFFSET (method) == 0)
757 current_function_decl = method;
758 error ("missing Code attribute");
763 if (DECL_LINENUMBERS_OFFSET (method))
767 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
768 linenumber_count = i = JCF_readu2 (jcf);
769 linenumber_table = ptr = jcf->read_ptr;
771 for (ptr += 2; --i >= 0; ptr += 4)
773 int line = GET_u2 (ptr);
774 /* Set initial input_line to smallest linenumber.
775 * Needs to be set before init_function_start. */
776 if (input_line == 0 || line < input_line)
782 linenumber_table = NULL;
783 linenumber_count = 0;
786 start_java_method (method);
788 note_instructions (jcf, method);
790 give_name_to_locals (jcf);
792 /* Convert bytecode to trees. */
793 expand_byte_code (jcf, method);
798 if (flag_emit_class_files)
799 write_classfile (current_class);
803 (*debug_hooks->end_source_file) (save_location.line);
804 input_location = save_location;
807 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
810 parse_source_file_1 (tree real_file, FILE *finput)
812 int save_error_count = java_error_count;
814 /* Mark the file as parsed. */
815 HAS_BEEN_ALREADY_PARSED_P (real_file) = 1;
817 jcf_dependency_add_file (input_filename, 0);
819 lang_init_source (1); /* Error msgs have no method prototypes */
821 /* There's no point in trying to find the current encoding unless we
822 are going to do something intelligent with it -- hence the test
824 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
825 setlocale (LC_CTYPE, "");
826 if (current_encoding == NULL)
827 current_encoding = nl_langinfo (CODESET);
829 if (current_encoding == NULL || *current_encoding == '\0')
830 current_encoding = DEFAULT_ENCODING;
832 /* Initialize the parser */
833 java_init_lex (finput, current_encoding);
834 java_parse_abort_on_error ();
836 java_parse (); /* Parse and build partial tree nodes. */
837 java_parse_abort_on_error ();
840 /* Process a parsed source file, resolving names etc. */
843 parse_source_file_2 (void)
845 int save_error_count = java_error_count;
846 java_complete_class (); /* Parse unsatisfied class decl. */
847 java_parse_abort_on_error ();
851 parse_source_file_3 (void)
853 int save_error_count = java_error_count;
854 java_check_circular_reference (); /* Check on circular references */
855 java_parse_abort_on_error ();
856 java_fix_constructors (); /* Fix the constructors */
857 java_parse_abort_on_error ();
858 java_reorder_fields (); /* Reorder the fields */
862 add_predefined_file (tree name)
864 predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
868 predefined_filename_p (tree node)
872 for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
874 if (TREE_VALUE (iter) == node)
880 /* Generate a function that does all static initialization for this
884 java_emit_static_constructor (void)
888 emit_register_classes (&body);
889 write_resource_constructor (&body);
892 cgraph_build_static_cdtor ('I', body, DEFAULT_INIT_PRIORITY);
896 java_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
898 int filename_count = 0;
903 if (flag_filelist_file)
906 finput = fopen (input_filename, "r");
908 fatal_error ("can't open %s: %m", input_filename);
909 list = xmalloc(avail);
917 avail = 2 * (count + avail);
918 list = xrealloc (list, avail);
920 avail = avail - count;
922 /* Subtract to to guarantee space for final '\0'. */
923 count = fread (next, 1, avail - 1, finput);
927 fatal_error ("error closing %s: %m", input_filename);
938 list = input_filename ? xstrdup (input_filename) : 0;
942 for (next = list; ; )
945 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
946 || ch == '&' /* FIXME */)
974 int len = strlen (list);
976 obstack_grow0 (&temporary_obstack, list, len);
977 value = obstack_finish (&temporary_obstack);
981 /* Exclude file that we see twice on the command line. For
982 all files except {Class,Error,Object,RuntimeException,String,
983 Throwable}.java we can rely on maybe_get_identifier. For
984 these files, we need to do a linear search of
985 current_file_list. This search happens only for these
986 files, presumably only when we're recompiling libgcj. */
988 if ((id = maybe_get_identifier (value)))
990 if (predefined_filename_p (id))
993 for (c = current_file_list; c; c = TREE_CHAIN (c))
994 if (TREE_VALUE (c) == id)
1003 location_t warn_loc;
1004 warn_loc.file = value;
1006 warning ("%Hsource file seen twice on command line and "
1007 "will be compiled only once", &warn_loc);
1011 node = get_identifier (value);
1012 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1013 current_file_list = tree_cons (NULL_TREE, node,
1020 if (filename_count == 0)
1021 warning ("no input file specified");
1025 const char *resource_filename;
1027 /* Only one resource file may be compiled at a time. */
1028 assert (TREE_CHAIN (current_file_list) == NULL);
1030 resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
1031 compile_resource_file (resource_name, resource_filename);
1036 current_jcf = main_jcf;
1037 current_file_list = nreverse (current_file_list);
1038 for (node = current_file_list; node; node = TREE_CHAIN (node))
1040 unsigned char magic_string[4];
1042 tree name = TREE_VALUE (node);
1045 /* Skip already parsed files */
1046 real_file = get_identifier (lrealpath (IDENTIFIER_POINTER (name)));
1047 if (HAS_BEEN_ALREADY_PARSED_P (real_file))
1050 /* Close previous descriptor, if any */
1051 if (finput && fclose (finput))
1052 fatal_error ("can't close input file %s: %m", main_input_filename);
1054 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1056 fatal_error ("can't open %s: %m", IDENTIFIER_POINTER (name));
1058 #ifdef IO_BUFFER_SIZE
1059 setvbuf (finput, xmalloc (IO_BUFFER_SIZE),
1060 _IOFBF, IO_BUFFER_SIZE);
1062 input_filename = IDENTIFIER_POINTER (name);
1064 /* Figure what kind of file we're dealing with */
1065 if (fread (magic_string, 1, 4, finput) == 4)
1067 fseek (finput, 0L, SEEK_SET);
1068 magic = GET_u4 (magic_string);
1070 if (magic == 0xcafebabe)
1072 CLASS_FILE_P (node) = 1;
1073 current_jcf = ggc_alloc (sizeof (JCF));
1074 JCF_ZERO (current_jcf);
1075 current_jcf->read_state = finput;
1076 current_jcf->filbuf = jcf_filbuf_from_stdio;
1077 jcf_parse (current_jcf);
1078 TYPE_JCF (current_class) = current_jcf;
1079 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1080 TREE_PURPOSE (node) = current_class;
1082 else if (magic == (JCF_u4)ZIPMAGIC)
1084 ZIP_FILE_P (node) = 1;
1085 main_jcf = ggc_alloc (sizeof (JCF));
1086 JCF_ZERO (main_jcf);
1087 main_jcf->read_state = finput;
1088 main_jcf->filbuf = jcf_filbuf_from_stdio;
1089 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1090 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1091 localToFile = SeenZipFiles;
1092 /* Register all the classes defined there. */
1093 process_zip_dir (main_jcf->read_state);
1094 parse_zip_file_entries ();
1097 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1102 JAVA_FILE_P (node) = 1;
1103 java_push_parser_context ();
1104 java_parser_context_save_global ();
1106 parse_source_file_1 (real_file, finput);
1107 java_parser_context_restore_global ();
1108 java_pop_parser_context (1);
1112 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1114 input_filename = ctxp->filename;
1115 parse_source_file_2 ();
1118 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1120 input_filename = ctxp->filename;
1121 parse_source_file_3 ();
1124 for (node = current_file_list; node; node = TREE_CHAIN (node))
1126 input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
1127 if (CLASS_FILE_P (node))
1129 output_class = current_class = TREE_PURPOSE (node);
1130 current_jcf = TYPE_JCF (current_class);
1131 layout_class (current_class);
1132 load_inner_classes (current_class);
1133 parse_class_file ();
1134 JCF_FINISH (current_jcf);
1137 input_filename = main_input_filename;
1139 java_expand_classes ();
1140 if (java_report_errors () || flag_syntax_only)
1143 /* Expand all classes compiled from source. */
1144 java_finish_classes ();
1147 /* Arrange for any necessary initialization to happen. */
1148 java_emit_static_constructor ();
1150 /* Only finalize the compilation unit after we've told cgraph which
1151 functions have their addresses stored. */
1152 cgraph_finalize_compilation_unit ();
1157 /* Return the name of the class corresponding to the name of the file
1158 in this zip entry. The result is newly allocated using ALLOC. */
1160 compute_class_name (struct ZipDirectory *zdir)
1162 char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1166 class_name = ALLOC (zdir->filename_length + 1 - 6);
1167 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length - 6);
1168 class_name [zdir->filename_length - 6] = '\0';
1169 for (j = 0; class_name[j]; ++j)
1170 class_name[j] = class_name[j] == '/' ? '.' : class_name[j];
1174 /* Return 0 if we should skip this entry, 1 if it is a .class file, 2
1175 if it is a property file of some sort. */
1177 classify_zip_file (struct ZipDirectory *zdir)
1179 char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1181 if (zdir->filename_length > 6
1182 && !strncmp (&class_name_in_zip_dir[zdir->filename_length - 6],
1186 /* For now we drop the manifest, but not other information. */
1187 if (zdir->filename_length == 20
1188 && !strncmp (class_name_in_zip_dir, "META-INF/MANIFEST.MF", 20))
1191 /* Drop directory entries. */
1192 if (zdir->filename_length > 0
1193 && class_name_in_zip_dir[zdir->filename_length - 1] == '/')
1199 /* Process all class entries found in the zip file. */
1201 parse_zip_file_entries (void)
1203 struct ZipDirectory *zdir;
1206 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1207 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1211 switch (classify_zip_file (zdir))
1218 char *class_name = compute_class_name (zdir);
1219 class = lookup_class (get_identifier (class_name));
1221 current_jcf = TYPE_JCF (class);
1222 output_class = current_class = class;
1224 if (! CLASS_LOADED_P (class))
1226 if (! CLASS_PARSED_P (class))
1228 read_zip_member (current_jcf, zdir, localToFile);
1229 jcf_parse (current_jcf);
1231 layout_class (current_class);
1232 load_inner_classes (current_class);
1235 if (TYPE_SIZE (current_class) != error_mark_node)
1237 input_filename = current_jcf->filename;
1238 parse_class_file ();
1239 FREE (current_jcf->buffer); /* No longer necessary */
1240 /* Note: there is a way to free this buffer right after a
1241 class seen in a zip file has been parsed. The idea is the
1242 set its jcf in such a way that buffer will be reallocated
1243 the time the code for the class will be generated. FIXME. */
1250 char *file_name, *class_name_in_zip_dir, *buffer;
1252 file_name = ALLOC (zdir->filename_length + 1);
1253 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1254 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1255 file_name[zdir->filename_length] = '\0';
1256 jcf = ALLOC (sizeof (JCF));
1258 jcf->read_state = finput;
1259 jcf->filbuf = jcf_filbuf_from_stdio;
1260 jcf->java_source = 0;
1261 jcf->classname = NULL;
1262 jcf->filename = file_name;
1265 if (read_zip_member (jcf, zdir, localToFile) < 0)
1266 fatal_error ("error while reading %s from zip file", file_name);
1268 buffer = ALLOC (zdir->filename_length + 1 +
1269 (jcf->buffer_end - jcf->buffer));
1270 strcpy (buffer, file_name);
1271 /* This is not a typo: we overwrite the trailing \0 of the
1272 file name; this is just how the data is laid out. */
1273 memcpy (buffer + zdir->filename_length,
1274 jcf->buffer, jcf->buffer_end - jcf->buffer);
1276 compile_resource_data (file_name, buffer,
1277 jcf->buffer_end - jcf->buffer);
1290 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1291 jcf up for further processing and link it to the created class. */
1294 process_zip_dir (FILE *finput)
1299 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1300 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1302 char *class_name, *file_name, *class_name_in_zip_dir;
1306 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1308 /* Here we skip non-class files; we handle them later. */
1309 if (classify_zip_file (zdir) != 1)
1312 class_name = compute_class_name (zdir);
1313 file_name = ALLOC (zdir->filename_length+1);
1314 jcf = ggc_alloc (sizeof (JCF));
1317 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1318 file_name [zdir->filename_length] = '\0';
1320 class = lookup_class (get_identifier (class_name));
1322 jcf->read_state = finput;
1323 jcf->filbuf = jcf_filbuf_from_stdio;
1324 jcf->java_source = 0;
1325 jcf->classname = class_name;
1326 jcf->filename = file_name;
1329 TYPE_JCF (class) = jcf;
1333 /* Initialization. */
1336 init_jcf_parse (void)
1341 #include "gt-java-jcf-parse.h"