1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC 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 GNU CC 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 GNU CC; 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> */
34 #include "java-except.h"
36 #include "java-tree.h"
47 #ifdef HAVE_NL_LANGINFO
51 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
52 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
53 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
54 #define JPOOL_UTF_DATA(JCF, INDEX) \
55 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
56 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
58 unsigned char save; unsigned char *text; \
59 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
60 text = (JCF)->read_ptr; \
61 save = text[LENGTH]; \
63 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
64 text[LENGTH] = save; \
65 JCF_SKIP (JCF, LENGTH); } while (0)
69 extern struct obstack temporary_obstack;
71 /* Set to nonzero value in order to emit class initilization code
72 before static field references. */
73 extern int always_initialize_class_p;
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 struct JCF main_jcf[1];
89 static struct ZipFile *localToFile;
91 /* Declarations of some functions used here. */
92 static void handle_innerclass_attribute PARAMS ((int count, JCF *));
93 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
94 static void parse_zip_file_entries PARAMS ((void));
95 static void process_zip_dir PARAMS ((FILE *));
96 static void parse_source_file_1 PARAMS ((tree, FILE *));
97 static void parse_source_file_2 PARAMS ((void));
98 static void parse_source_file_3 PARAMS ((void));
99 static void parse_class_file PARAMS ((void));
100 static void set_source_filename PARAMS ((JCF *, int));
101 static void ggc_mark_jcf PARAMS ((void**));
102 static void jcf_parse PARAMS ((struct JCF*));
103 static void load_inner_classes PARAMS ((tree));
105 /* Mark (for garbage collection) all the tree nodes that are
106 referenced from JCF's constant pool table. Do that only if the JCF
107 hasn't been marked finished. */
113 JCF *jcf = *(JCF**) elt;
114 if (jcf != NULL && !jcf->finished)
116 CPool *cpool = &jcf->cpool;
117 int size = CPOOL_COUNT(cpool);
119 for (index = 1; index < size; index++)
121 int tag = JPOOL_TAG (jcf, index);
122 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
123 ggc_mark_tree ((tree) cpool->data[index]);
128 /* Handle "SourceFile" attribute. */
131 set_source_filename (jcf, index)
135 tree sfname_id = get_name_constant (jcf, index);
136 const char *sfname = IDENTIFIER_POINTER (sfname_id);
137 if (input_filename != NULL)
139 int old_len = strlen (input_filename);
140 int new_len = IDENTIFIER_LENGTH (sfname_id);
141 /* Use the current input_filename (derived from the class name)
142 if it has a directory prefix, but otherwise matches sfname. */
143 if (old_len > new_len
144 && strcmp (sfname, input_filename + old_len - new_len) == 0
145 && (input_filename[old_len - new_len - 1] == '/'
146 || input_filename[old_len - new_len - 1] == '\\'))
149 input_filename = sfname;
150 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
151 if (current_class == main_class) main_input_filename = input_filename;
154 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
156 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
157 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
158 current_class = give_name_to_class (jcf, THIS); \
159 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
161 #define HANDLE_CLASS_INTERFACE(INDEX) \
162 add_interface (current_class, get_class_constant (jcf, INDEX))
164 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
165 { int sig_index = SIGNATURE; \
166 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
167 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
168 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
169 if ((ACCESS_FLAGS) & ACC_FINAL) \
170 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
173 #define HANDLE_END_FIELDS() \
174 (current_field = NULL_TREE)
176 #define HANDLE_CONSTANTVALUE(INDEX) \
177 { tree constant; int index = INDEX; \
178 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
179 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
180 constant = build_utf8_ref (name); \
183 constant = get_constant (jcf, index); \
184 set_constant_value (current_field, constant); }
186 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
187 (current_method = add_method (current_class, ACCESS_FLAGS, \
188 get_name_constant (jcf, NAME), \
189 get_name_constant (jcf, SIGNATURE)), \
190 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
191 DECL_LINENUMBERS_OFFSET (current_method) = 0)
193 #define HANDLE_END_METHODS() \
194 { current_method = NULL_TREE; }
196 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
197 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
198 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
199 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
200 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
202 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
204 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
205 JCF_SKIP (jcf, n * 10); }
207 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
209 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
210 JCF_SKIP (jcf, n * 4); }
212 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
215 tree list = DECL_FUNCTION_THROWS (current_method); \
218 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
219 list = tree_cons (NULL_TREE, thrown_class, list); \
221 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
224 /* Link seen inner classes to their outer context and register the
225 inner class to its outer context. They will be later loaded. */
226 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
227 handle_innerclass_attribute (COUNT, jcf)
229 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
231 /* Irrelevant decls should have been nullified by the END macros. \
232 We only handle the `Synthetic' attribute on method DECLs. \
233 DECL_ARTIFICIAL on fields is used for something else (See \
234 PUSH_FIELD in java-tree.h) */ \
235 if (current_method) \
236 DECL_ARTIFICIAL (current_method) = 1; \
239 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
241 if (current_class == object_type_node) \
242 jcf->right_zip = 1; \
245 #include "jcf-reader.c"
248 parse_signature (jcf, sig_index)
252 if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
253 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
256 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
257 JPOOL_UTF_LENGTH (jcf, sig_index));
261 get_constant (jcf, index)
267 if (index <= 0 || index >= JPOOL_SIZE(jcf))
269 tag = JPOOL_TAG (jcf, index);
270 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
271 return (tree) jcf->cpool.data[index];
274 case CONSTANT_Integer:
276 jint num = JPOOL_INT(jcf, index);
277 value = build_int_2 (num, num < 0 ? -1 : 0);
278 TREE_TYPE (value) = int_type_node;
283 unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
284 HOST_WIDE_INT lo, hi;
285 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
286 num = JPOOL_UINT (jcf, index+1);
287 add_double (lo, hi, num, 0, &lo, &hi);
288 value = build_int_2 (lo, hi);
289 TREE_TYPE (value) = long_type_node;
290 force_fit_type (value, 0);
296 jint num = JPOOL_INT(jcf, index);
300 real_from_target_fmt (&d, &buf, &ieee_single_format);
301 value = build_real (float_type_node, d);
305 case CONSTANT_Double:
310 hi = JPOOL_UINT (jcf, index);
311 lo = JPOOL_UINT (jcf, index+1);
313 if (FLOAT_WORDS_BIG_ENDIAN)
314 buf[0] = hi, buf[1] = lo;
316 buf[0] = lo, buf[1] = hi;
318 real_from_target_fmt (&d, buf, &ieee_double_format);
319 value = build_real (double_type_node, d);
323 case CONSTANT_String:
325 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
326 const char *utf8_ptr = IDENTIFIER_POINTER (name);
327 int utf8_len = IDENTIFIER_LENGTH (name);
328 const unsigned char *utf8;
331 /* Check for a malformed Utf8 string. */
332 utf8 = (const unsigned char *) utf8_ptr;
336 int char_len = UT8_CHAR_LENGTH (*utf8);
337 if (char_len < 0 || char_len > 3 || char_len > i)
338 fatal_error ("bad string constant");
344 /* Allocate a new string value. */
345 value = build_string (utf8_len, utf8_ptr);
346 TREE_TYPE (value) = build_pointer_type (string_type_node);
352 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
353 jcf->cpool.data [index] = (jword) value;
356 internal_error ("bad value constant type %d, index %d",
357 JPOOL_TAG (jcf, index), index);
361 get_name_constant (jcf, index)
365 tree name = get_constant (jcf, index);
367 if (TREE_CODE (name) != IDENTIFIER_NODE)
373 /* Handle reading innerclass attributes. If a nonzero entry (denoting
374 a non anonymous entry) is found, We augment the inner class list of
375 the outer context with the newly resolved innerclass. */
378 handle_innerclass_attribute (count, jcf)
385 /* Read inner_class_info_index. This may be 0 */
386 int icii = JCF_readu2 (jcf);
387 /* Read outer_class_info_index. If the innerclasses attribute
388 entry isn't a member (like an inner class) the value is 0. */
389 int ocii = JCF_readu2 (jcf);
390 /* Read inner_name_index. If the class we're dealing with is
391 an annonymous class, it must be 0. */
392 int ini = JCF_readu2 (jcf);
393 /* Read the access flag. */
394 int acc = JCF_readu2 (jcf);
395 /* If icii is 0, don't try to read the class. */
398 tree class = get_class_constant (jcf, icii);
399 tree decl = TYPE_NAME (class);
400 /* Skip reading further if ocii is null */
401 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
403 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
404 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
405 set_class_decl_access_flags (acc, decl);
406 DECL_CONTEXT (decl) = outer;
407 DECL_INNER_CLASS_LIST (outer) =
408 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
409 CLASS_COMPLETE_P (decl) = 1;
416 give_name_to_class (jcf, i)
420 if (i <= 0 || i >= JPOOL_SIZE (jcf)
421 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
426 int j = JPOOL_USHORT1 (jcf, i);
427 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
428 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
429 JPOOL_UTF_LENGTH (jcf, j));
430 this_class = lookup_class (class_name);
431 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
433 if (main_input_filename == NULL && jcf == main_jcf)
434 main_input_filename = input_filename;
436 jcf->cpool.data[i] = (jword) this_class;
437 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
442 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
445 get_class_constant (JCF *jcf , int i)
448 if (i <= 0 || i >= JPOOL_SIZE (jcf)
449 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
452 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
454 int name_index = JPOOL_USHORT1 (jcf, i);
455 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
456 const char *name = JPOOL_UTF_DATA (jcf, name_index);
457 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
459 if (name[0] == '[') /* Handle array "classes". */
460 type = TREE_TYPE (parse_signature_string (name, nlength));
463 tree cname = unmangle_classname (name, nlength);
464 type = lookup_class (cname);
466 jcf->cpool.data[i] = (jword) type;
467 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
470 type = (tree) jcf->cpool.data[i];
474 /* Read a class with the fully qualified-name NAME.
475 Return 1 iff we read the requested file.
476 (It is still possible we failed if the file did not
477 define the class it is supposed to.) */
484 tree icv, class = NULL_TREE;
485 tree save_current_class = current_class;
486 const char *save_input_filename = input_filename;
487 JCF *save_current_jcf = current_jcf;
489 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
491 class = TREE_TYPE (icv);
492 jcf = TYPE_JCF (class);
499 this_jcf.zipd = NULL;
501 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
508 if (current_jcf->java_source)
510 const char *filename = current_jcf->filename;
515 java_parser_context_save_global ();
516 java_push_parser_context ();
517 BUILD_FILENAME_IDENTIFIER_NODE (file, filename);
518 generate = IS_A_COMMAND_LINE_FILENAME_P (file);
519 if (wfl_operator == NULL_TREE)
520 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
521 EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
522 input_filename = ggc_strdup (filename);
523 current_class = NULL_TREE;
524 current_function_decl = NULL_TREE;
525 if (!HAS_BEEN_ALREADY_PARSED_P (file))
527 if (!(finput = fopen (input_filename, "r")))
528 fatal_io_error ("can't reopen %s", input_filename);
529 parse_source_file_1 (file, finput);
530 parse_source_file_2 ();
531 parse_source_file_3 ();
533 fatal_io_error ("can't close %s", input_filename);
535 JCF_FINISH (current_jcf);
536 java_pop_parser_context (generate);
537 java_parser_context_restore_global ();
541 if (class == NULL_TREE || ! CLASS_PARSED_P (class))
543 java_parser_context_save_global ();
544 java_push_parser_context ();
545 current_class = class;
546 input_filename = current_jcf->filename;
547 if (JCF_SEEN_IN_ZIP (current_jcf))
548 read_zip_member(current_jcf,
549 current_jcf->zipd, current_jcf->zipd->zipf);
550 jcf_parse (current_jcf);
551 class = current_class;
552 java_pop_parser_context (0);
553 java_parser_context_restore_global ();
555 layout_class (class);
556 load_inner_classes (class);
559 current_class = save_current_class;
560 input_filename = save_input_filename;
561 current_jcf = save_current_jcf;
565 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
566 called from the parser, otherwise it's a RECORD_TYPE node. If
567 VERBOSE is 1, print error message on failure to load a class. */
569 /* Replace calls to load_class by having callers call read_class directly
570 - and then perhaps rename read_class to load_class. FIXME */
573 load_class (class_or_name, verbose)
580 /* class_or_name can be the name of the class we want to load */
581 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
582 name = class_or_name;
583 /* In some cases, it's a dependency that we process earlier that
585 else if (TREE_CODE (class_or_name) == TREE_LIST)
586 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
587 /* Or it's a type in the making */
589 name = DECL_NAME (TYPE_NAME (class_or_name));
596 if ((class_loaded = read_class (name)))
599 /* We failed loading name. Now consider that we might be looking
600 for a inner class. */
601 if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
602 || (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
606 name = get_identifier (IDENTIFIER_POINTER (name));
609 /* Otherwise, we failed, we bail. */
614 if (!class_loaded && verbose)
615 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
618 /* Parse the .class file JCF. */
626 if (jcf_parse_preamble (jcf) != 0)
627 fatal_error ("not a valid Java .class file");
628 code = jcf_parse_constant_pool (jcf);
630 fatal_error ("error while parsing constant pool");
631 code = verify_constant_pool (jcf);
633 fatal_error ("error in constant pool entry #%d\n", code);
635 jcf_parse_class (jcf);
636 if (main_class == NULL_TREE)
637 main_class = current_class;
638 if (! quiet_flag && TYPE_NAME (current_class))
639 fprintf (stderr, " %s %s",
640 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
641 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
642 if (CLASS_PARSED_P (current_class))
644 /* FIXME - where was first time */
645 fatal_error ("reading class %s for the second time from %s",
646 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
649 CLASS_PARSED_P (current_class) = 1;
651 for (i = 1; i < JPOOL_SIZE(jcf); i++)
653 switch (JPOOL_TAG (jcf, i))
656 get_class_constant (jcf, i);
661 code = jcf_parse_fields (jcf);
663 fatal_error ("error while parsing fields");
664 code = jcf_parse_methods (jcf);
666 fatal_error ("error while parsing methods");
667 code = jcf_parse_final_attributes (jcf);
669 fatal_error ("error while parsing final attributes");
671 /* The fields of class_type_node are already in correct order. */
672 if (current_class != class_type_node && current_class != object_type_node)
673 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
675 if (current_class == object_type_node)
677 layout_class_methods (object_type_node);
678 /* If we don't have the right archive, emit a verbose warning.
679 If we're generating bytecode, emit the warning only if
680 -fforce-classes-archive-check was specified. */
682 && (!flag_emit_class_files || flag_force_classes_archive_check))
683 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);
686 all_class_list = tree_cons (NULL_TREE,
687 TYPE_NAME (current_class), all_class_list );
690 /* If we came across inner classes, load them now. */
692 load_inner_classes (cur_class)
696 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
697 current = TREE_CHAIN (current))
699 tree name = DECL_NAME (TREE_PURPOSE (current));
700 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
701 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
702 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
703 load_class (name, 1);
708 init_outgoing_cpool ()
710 current_constant_pool_data_ref = NULL_TREE;
711 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
712 memset (outgoing_cpool, 0, sizeof (struct CPool));
719 const char *save_input_filename = input_filename;
720 int save_lineno = lineno;
722 java_layout_seen_class_methods ();
724 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
726 (*debug_hooks->start_source_file) (lineno, input_filename);
727 init_outgoing_cpool ();
729 /* Currently we always have to emit calls to _Jv_InitClass when
730 compiling from class files. */
731 always_initialize_class_p = 1;
733 for (field = TYPE_FIELDS (current_class);
734 field != NULL_TREE; field = TREE_CHAIN (field))
735 if (FIELD_STATIC (field))
736 DECL_EXTERNAL (field) = 0;
738 for (method = TYPE_METHODS (current_class);
739 method != NULL_TREE; method = TREE_CHAIN (method))
741 JCF *jcf = current_jcf;
743 if (METHOD_ABSTRACT (method))
746 if (METHOD_NATIVE (method))
753 /* We need to compute the DECL_MAX_LOCALS. We need to take
754 the wide types into account too. */
755 for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
756 arg != end_params_node;
757 arg = TREE_CHAIN (arg), decl_max_locals += 1)
759 if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
760 decl_max_locals += 1;
762 DECL_MAX_LOCALS (method) = decl_max_locals;
763 start_java_method (method);
764 give_name_to_locals (jcf);
765 expand_expr_stmt (build_jni_stub (method));
770 if (DECL_CODE_OFFSET (method) == 0)
772 current_function_decl = method;
773 error ("missing Code attribute");
778 if (DECL_LINENUMBERS_OFFSET (method))
781 register unsigned char *ptr;
782 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
783 linenumber_count = i = JCF_readu2 (jcf);
784 linenumber_table = ptr = jcf->read_ptr;
786 for (ptr += 2; --i >= 0; ptr += 4)
788 int line = GET_u2 (ptr);
789 /* Set initial lineno lineno to smallest linenumber.
790 * Needs to be set before init_function_start. */
791 if (lineno == 0 || line < lineno)
797 linenumber_table = NULL;
798 linenumber_count = 0;
801 start_java_method (method);
803 note_instructions (jcf, method);
805 give_name_to_locals (jcf);
807 /* Actually generate code. */
808 expand_byte_code (jcf, method);
813 if (flag_emit_class_files)
814 write_classfile (current_class);
818 (*debug_hooks->end_source_file) (save_lineno);
819 input_filename = save_input_filename;
820 lineno = save_lineno;
823 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
826 parse_source_file_1 (file, finput)
830 int save_error_count = java_error_count;
831 /* Mark the file as parsed */
832 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
834 jcf_dependency_add_file (input_filename, 0);
836 lang_init_source (1); /* Error msgs have no method prototypes */
838 /* There's no point in trying to find the current encoding unless we
839 are going to do something intelligent with it -- hence the test
841 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_NL_LANGINFO)
842 setlocale (LC_CTYPE, "");
843 if (current_encoding == NULL)
844 current_encoding = nl_langinfo (CODESET);
846 if (current_encoding == NULL || *current_encoding == '\0')
847 current_encoding = DEFAULT_ENCODING;
849 /* Initialize the parser */
850 java_init_lex (finput, current_encoding);
851 java_parse_abort_on_error ();
853 java_parse (); /* Parse and build partial tree nodes. */
854 java_parse_abort_on_error ();
857 /* Process a parsed source file, resolving names etc. */
860 parse_source_file_2 ()
862 int save_error_count = java_error_count;
863 java_complete_class (); /* Parse unsatisfied class decl. */
864 java_parse_abort_on_error ();
868 parse_source_file_3 ()
870 int save_error_count = java_error_count;
871 java_check_circular_reference (); /* Check on circular references */
872 java_parse_abort_on_error ();
873 java_fix_constructors (); /* Fix the constructors */
874 java_parse_abort_on_error ();
875 java_reorder_fields (); /* Reorder the fields */
879 add_predefined_file (name)
882 predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
886 predefined_filename_p (node)
891 for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
893 if (TREE_VALUE (iter) == node)
900 java_parse_file (set_yydebug)
901 int set_yydebug ATTRIBUTE_UNUSED;
903 int filename_count = 0;
908 if (flag_filelist_file)
911 finput = fopen (input_filename, "r");
913 fatal_io_error ("can't open %s", input_filename);
914 list = xmalloc(avail);
922 avail = 2 * (count + avail);
923 list = xrealloc (list, avail);
925 avail = avail - count;
927 /* Subtract to to guarantee space for final '\0'. */
928 count = fread (next, 1, avail - 1, finput);
932 fatal_io_error ("error closing %s", input_filename);
943 list = xstrdup (input_filename);
947 for (next = list; ; )
950 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
951 || ch == '&' /* FIXME */)
979 int len = strlen (list);
981 obstack_grow0 (&temporary_obstack, list, len);
982 value = obstack_finish (&temporary_obstack);
986 /* Exclude file that we see twice on the command line. For
987 all files except {Class,Error,Object,RuntimeException,String,
988 Throwable}.java we can rely on maybe_get_identifier. For
989 these files, we need to do a linear search of
990 current_file_list. This search happens only for these
991 files, presumably only when we're recompiling libgcj. */
993 if ((id = maybe_get_identifier (value)))
995 if (predefined_filename_p (id))
998 for (c = current_file_list; c; c = TREE_CHAIN (c))
999 if (TREE_VALUE (c) == id)
1008 const char *saved_input_filename = input_filename;
1009 input_filename = value;
1010 warning ("source file seen twice on command line and will be compiled only once");
1011 input_filename = saved_input_filename;
1015 BUILD_FILENAME_IDENTIFIER_NODE (node, value);
1016 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1017 current_file_list = tree_cons (NULL_TREE, node,
1025 if (filename_count == 0)
1026 warning ("no input file specified");
1030 const char *resource_filename;
1032 /* Only one resource file may be compiled at a time. */
1033 assert (TREE_CHAIN (current_file_list) == NULL);
1035 resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
1036 compile_resource_file (resource_name, resource_filename);
1041 current_jcf = main_jcf;
1042 current_file_list = nreverse (current_file_list);
1043 for (node = current_file_list; node; node = TREE_CHAIN (node))
1045 unsigned char magic_string[4];
1047 tree name = TREE_VALUE (node);
1049 /* Skip already parsed files */
1050 if (HAS_BEEN_ALREADY_PARSED_P (name))
1053 /* Close previous descriptor, if any */
1054 if (finput && fclose (finput))
1055 fatal_io_error ("can't close input file %s", main_input_filename);
1057 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1059 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name));
1061 #ifdef IO_BUFFER_SIZE
1062 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
1063 _IOFBF, IO_BUFFER_SIZE);
1065 input_filename = IDENTIFIER_POINTER (name);
1067 /* Figure what kind of file we're dealing with */
1068 if (fread (magic_string, 1, 4, finput) == 4)
1070 fseek (finput, 0L, SEEK_SET);
1071 magic = GET_u4 (magic_string);
1073 if (magic == 0xcafebabe)
1075 CLASS_FILE_P (node) = 1;
1076 current_jcf = ALLOC (sizeof (JCF));
1077 JCF_ZERO (current_jcf);
1078 current_jcf->read_state = finput;
1079 current_jcf->filbuf = jcf_filbuf_from_stdio;
1080 jcf_parse (current_jcf);
1081 TYPE_JCF (current_class) = current_jcf;
1082 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1083 TREE_PURPOSE (node) = current_class;
1085 else if (magic == (JCF_u4)ZIPMAGIC)
1087 ZIP_FILE_P (node) = 1;
1088 JCF_ZERO (main_jcf);
1089 main_jcf->read_state = finput;
1090 main_jcf->filbuf = jcf_filbuf_from_stdio;
1091 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1092 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1093 localToFile = SeenZipFiles;
1094 /* Register all the class defined there. */
1095 process_zip_dir (main_jcf->read_state);
1096 parse_zip_file_entries ();
1099 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1104 JAVA_FILE_P (node) = 1;
1105 java_push_parser_context ();
1106 java_parser_context_save_global ();
1107 parse_source_file_1 (name, finput);
1108 java_parser_context_restore_global ();
1109 java_pop_parser_context (1);
1113 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1115 input_filename = ctxp->filename;
1116 parse_source_file_2 ();
1119 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1121 input_filename = ctxp->filename;
1122 parse_source_file_3 ();
1125 for (node = current_file_list; node; node = TREE_CHAIN (node))
1127 input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
1128 if (CLASS_FILE_P (node))
1130 current_class = TREE_PURPOSE (node);
1131 current_jcf = TYPE_JCF (current_class);
1132 layout_class (current_class);
1133 load_inner_classes (current_class);
1134 parse_class_file ();
1135 JCF_FINISH (current_jcf);
1138 input_filename = main_input_filename;
1140 java_expand_classes ();
1141 if (!java_report_errors () && !flag_syntax_only)
1143 emit_register_classes ();
1144 if (flag_indirect_dispatch)
1145 emit_offset_symbol_table ();
1149 /* Process all class entries found in the zip file. */
1151 parse_zip_file_entries (void)
1153 struct ZipDirectory *zdir;
1156 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1157 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1161 /* We don't need to consider those files. */
1162 if (!zdir->size || !zdir->filename_offset)
1165 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
1166 current_jcf = TYPE_JCF (class);
1167 current_class = class;
1169 if ( !CLASS_LOADED_P (class))
1171 if (! CLASS_PARSED_P (class))
1173 read_zip_member(current_jcf, zdir, localToFile);
1174 jcf_parse (current_jcf);
1176 layout_class (current_class);
1177 load_inner_classes (current_class);
1180 if (TYPE_SIZE (current_class) != error_mark_node)
1182 input_filename = current_jcf->filename;
1183 parse_class_file ();
1184 FREE (current_jcf->buffer); /* No longer necessary */
1185 /* Note: there is a way to free this buffer right after a
1186 class seen in a zip file has been parsed. The idea is the
1187 set its jcf in such a way that buffer will be reallocated
1188 the time the code for the class will be generated. FIXME. */
1193 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1194 jcf up for further processing and link it to the created class. */
1197 process_zip_dir (FILE *finput)
1202 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1203 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1205 char *class_name, *file_name, *class_name_in_zip_dir;
1210 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1212 /* We choose to not to process entries with a zero size or entries
1213 not bearing the .class extension. */
1214 if (!zdir->size || !zdir->filename_offset ||
1215 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
1218 /* So it will be skipped in parse_zip_file_entries */
1223 class_name = ALLOC (zdir->filename_length+1-6);
1224 file_name = ALLOC (zdir->filename_length+1);
1225 jcf = ALLOC (sizeof (JCF));
1228 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
1229 class_name [zdir->filename_length-6] = '\0';
1230 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1231 file_name [zdir->filename_length] = '\0';
1233 for (j=0; class_name[j]; j++)
1234 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
1236 /* Yes, we write back the true class name into the zip directory. */
1237 strcpy (class_name_in_zip_dir, class_name);
1238 zdir->filename_length = j;
1239 class = lookup_class (get_identifier (class_name));
1241 jcf->read_state = finput;
1242 jcf->filbuf = jcf_filbuf_from_stdio;
1243 jcf->java_source = 0;
1244 jcf->classname = class_name;
1245 jcf->filename = file_name;
1248 TYPE_JCF (class) = jcf;
1252 /* Initialization. */
1257 /* Register roots with the garbage collector. */
1258 ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf);
1263 #include "gt-java-jcf-parse.h"