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_cst (int_type_node, num, num < 0 ? -1 : 0);
274 unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
275 unsigned HOST_WIDE_INT lo;
278 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
279 num = JPOOL_UINT (jcf, index+1);
280 add_double (lo, hi, num, 0, &lo, &hi);
281 value = build_int_cst (long_type_node, lo, hi);
282 value = force_fit_type (value, 0, false, false);
288 jint num = JPOOL_INT(jcf, index);
292 real_from_target_fmt (&d, &buf, &ieee_single_format);
293 value = build_real (float_type_node, d);
297 case CONSTANT_Double:
302 hi = JPOOL_UINT (jcf, index);
303 lo = JPOOL_UINT (jcf, index+1);
305 if (FLOAT_WORDS_BIG_ENDIAN)
306 buf[0] = hi, buf[1] = lo;
308 buf[0] = lo, buf[1] = hi;
310 real_from_target_fmt (&d, buf, &ieee_double_format);
311 value = build_real (double_type_node, d);
315 case CONSTANT_String:
317 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
318 const char *utf8_ptr = IDENTIFIER_POINTER (name);
319 int utf8_len = IDENTIFIER_LENGTH (name);
320 const unsigned char *utf8;
323 /* Check for a malformed Utf8 string. */
324 utf8 = (const unsigned char *) utf8_ptr;
328 int char_len = UT8_CHAR_LENGTH (*utf8);
329 if (char_len < 0 || char_len > 3 || char_len > i)
330 fatal_error ("bad string constant");
336 /* Allocate a new string value. */
337 value = build_string (utf8_len, utf8_ptr);
338 TREE_TYPE (value) = build_pointer_type (string_type_node);
344 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
345 jcf->cpool.data[index].t = value;
348 internal_error ("bad value constant type %d, index %d",
349 JPOOL_TAG (jcf, index), index);
353 get_name_constant (JCF *jcf, int index)
355 tree name = get_constant (jcf, index);
357 if (TREE_CODE (name) != IDENTIFIER_NODE)
363 /* Handle reading innerclass attributes. If a nonzero entry (denoting
364 a non anonymous entry) is found, We augment the inner class list of
365 the outer context with the newly resolved innerclass. */
368 handle_innerclass_attribute (int count, JCF *jcf)
373 /* Read inner_class_info_index. This may be 0 */
374 int icii = JCF_readu2 (jcf);
375 /* Read outer_class_info_index. If the innerclasses attribute
376 entry isn't a member (like an inner class) the value is 0. */
377 int ocii = JCF_readu2 (jcf);
378 /* Read inner_name_index. If the class we're dealing with is
379 an anonymous class, it must be 0. */
380 int ini = JCF_readu2 (jcf);
381 /* Read the access flag. */
382 int acc = JCF_readu2 (jcf);
383 /* If icii is 0, don't try to read the class. */
386 tree class = get_class_constant (jcf, icii);
387 tree decl = TYPE_NAME (class);
388 /* Skip reading further if ocii is null */
389 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
391 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
392 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
393 set_class_decl_access_flags (acc, decl);
394 DECL_CONTEXT (decl) = outer;
395 DECL_INNER_CLASS_LIST (outer) =
396 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
397 CLASS_COMPLETE_P (decl) = 1;
404 give_name_to_class (JCF *jcf, int i)
406 if (i <= 0 || i >= JPOOL_SIZE (jcf)
407 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
412 int j = JPOOL_USHORT1 (jcf, i);
413 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
414 tree class_name = unmangle_classname ((const char *) JPOOL_UTF_DATA (jcf, j),
415 JPOOL_UTF_LENGTH (jcf, j));
416 this_class = lookup_class (class_name);
417 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
419 if (main_input_filename == NULL && jcf == main_jcf)
420 main_input_filename = input_filename;
422 jcf->cpool.data[i].t = this_class;
423 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
428 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
431 get_class_constant (JCF *jcf, int i)
434 if (i <= 0 || i >= JPOOL_SIZE (jcf)
435 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
438 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
440 int name_index = JPOOL_USHORT1 (jcf, i);
441 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
442 const char *name = (const char *) JPOOL_UTF_DATA (jcf, name_index);
443 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
445 if (name[0] == '[') /* Handle array "classes". */
446 type = TREE_TYPE (parse_signature_string ((const unsigned char *) name, nlength));
449 tree cname = unmangle_classname (name, nlength);
450 type = lookup_class (cname);
452 jcf->cpool.data[i].t = type;
453 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
456 type = jcf->cpool.data[i].t;
460 /* Read a class with the fully qualified-name NAME.
461 Return 1 iff we read the requested file.
462 (It is still possible we failed if the file did not
463 define the class it is supposed to.) */
466 read_class (tree name)
469 tree icv, class = NULL_TREE;
470 tree save_current_class = current_class;
471 tree save_output_class = output_class;
472 location_t save_location = input_location;
473 JCF *save_current_jcf = current_jcf;
475 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
477 class = TREE_TYPE (icv);
478 jcf = TYPE_JCF (class);
485 this_jcf.zipd = NULL;
487 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
494 if (current_jcf->java_source)
496 const char *filename = current_jcf->filename;
497 tree given_file, real_file;
501 java_parser_context_save_global ();
502 java_push_parser_context ();
504 given_file = get_identifier (filename);
505 real_file = get_identifier (lrealpath (filename));
507 generate = IS_A_COMMAND_LINE_FILENAME_P (given_file);
508 if (wfl_operator == NULL_TREE)
509 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
510 EXPR_WFL_FILENAME_NODE (wfl_operator) = given_file;
511 input_filename = ggc_strdup (filename);
512 output_class = current_class = NULL_TREE;
513 current_function_decl = NULL_TREE;
515 if (! HAS_BEEN_ALREADY_PARSED_P (real_file))
517 if (! (finput = fopen (input_filename, "r")))
518 fatal_error ("can't reopen %s: %m", input_filename);
520 parse_source_file_1 (real_file, finput);
521 parse_source_file_2 ();
522 parse_source_file_3 ();
525 fatal_error ("can't close %s: %m", input_filename);
527 JCF_FINISH (current_jcf);
528 java_pop_parser_context (generate);
529 java_parser_context_restore_global ();
533 if (class == NULL_TREE || ! CLASS_PARSED_P (class))
535 java_parser_context_save_global ();
536 java_push_parser_context ();
537 output_class = current_class = class;
538 input_filename = current_jcf->filename;
539 if (JCF_SEEN_IN_ZIP (current_jcf))
540 read_zip_member(current_jcf,
541 current_jcf->zipd, current_jcf->zipd->zipf);
542 jcf_parse (current_jcf);
543 /* Parsing might change the class, in which case we have to
544 put it back where we found it. */
545 if (current_class != class && icv != NULL_TREE)
546 TREE_TYPE (icv) = current_class;
547 class = current_class;
548 java_pop_parser_context (0);
549 java_parser_context_restore_global ();
551 layout_class (class);
552 load_inner_classes (class);
555 output_class = save_output_class;
556 current_class = save_current_class;
557 input_location = save_location;
558 current_jcf = save_current_jcf;
562 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
563 called from the parser, otherwise it's a RECORD_TYPE node. If
564 VERBOSE is 1, print error message on failure to load a class. */
566 load_class (tree class_or_name, int verbose)
571 /* class_or_name can be the name of the class we want to load */
572 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
573 name = class_or_name;
574 /* In some cases, it's a dependency that we process earlier that
576 else if (TREE_CODE (class_or_name) == TREE_LIST)
577 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
578 /* Or it's a type in the making */
581 /* If the class is from source code, then it must already be loaded. */
582 if (CLASS_FROM_SOURCE_P (class_or_name))
584 name = DECL_NAME (TYPE_NAME (class_or_name));
592 if ((class_loaded = read_class (name)))
595 /* We failed loading name. Now consider that we might be looking
596 for a inner class. */
597 if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
598 || (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
602 name = get_identifier (IDENTIFIER_POINTER (name));
605 /* Otherwise, we failed, we bail. */
610 if (!class_loaded && verbose)
611 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
614 /* Parse the .class file JCF. */
621 if (jcf_parse_preamble (jcf) != 0)
622 fatal_error ("not a valid Java .class file");
623 code = jcf_parse_constant_pool (jcf);
625 fatal_error ("error while parsing constant pool");
626 code = verify_constant_pool (jcf);
628 fatal_error ("error in constant pool entry #%d\n", code);
630 jcf_parse_class (jcf);
631 if (main_class == NULL_TREE)
632 main_class = current_class;
633 if (! quiet_flag && TYPE_NAME (current_class))
634 fprintf (stderr, " %s %s",
635 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
636 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
637 if (CLASS_PARSED_P (current_class))
639 /* FIXME - where was first time */
640 fatal_error ("reading class %s for the second time from %s",
641 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
644 CLASS_PARSED_P (current_class) = 1;
646 for (i = 1; i < JPOOL_SIZE(jcf); i++)
648 switch (JPOOL_TAG (jcf, i))
651 get_class_constant (jcf, i);
656 code = jcf_parse_fields (jcf);
658 fatal_error ("error while parsing fields");
659 code = jcf_parse_methods (jcf);
661 fatal_error ("error while parsing methods");
662 code = jcf_parse_final_attributes (jcf);
664 fatal_error ("error while parsing final attributes");
666 /* The fields of class_type_node are already in correct order. */
667 if (current_class != class_type_node && current_class != object_type_node)
668 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
670 if (current_class == object_type_node)
672 layout_class_methods (object_type_node);
673 /* If we don't have the right archive, emit a verbose warning.
674 If we're generating bytecode, emit the warning only if
675 -fforce-classes-archive-check was specified. */
677 && (!flag_emit_class_files || flag_force_classes_archive_check))
678 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);
681 all_class_list = tree_cons (NULL_TREE,
682 TYPE_NAME (current_class), all_class_list );
685 /* If we came across inner classes, load them now. */
687 load_inner_classes (tree cur_class)
690 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
691 current = TREE_CHAIN (current))
693 tree name = DECL_NAME (TREE_PURPOSE (current));
694 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
695 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
696 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
697 load_class (name, 1);
702 parse_class_file (void)
705 location_t save_location = input_location;
707 java_layout_seen_class_methods ();
709 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
711 (*debug_hooks->start_source_file) (input_line, input_filename);
713 /* Currently we always have to emit calls to _Jv_InitClass when
714 compiling from class files. */
715 always_initialize_class_p = 1;
717 gen_indirect_dispatch_tables (current_class);
719 java_mark_class_local (current_class);
721 for (method = TYPE_METHODS (current_class);
722 method != NULL_TREE; method = TREE_CHAIN (method))
724 JCF *jcf = current_jcf;
726 if (METHOD_ABSTRACT (method))
729 if (METHOD_NATIVE (method))
736 /* We need to compute the DECL_MAX_LOCALS. We need to take
737 the wide types into account too. */
738 for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
739 arg != end_params_node;
740 arg = TREE_CHAIN (arg), decl_max_locals += 1)
742 if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
743 decl_max_locals += 1;
745 DECL_MAX_LOCALS (method) = decl_max_locals;
746 start_java_method (method);
747 give_name_to_locals (jcf);
748 *get_stmts () = build_jni_stub (method);
753 if (DECL_CODE_OFFSET (method) == 0)
755 current_function_decl = method;
756 error ("missing Code attribute");
761 if (DECL_LINENUMBERS_OFFSET (method))
765 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
766 linenumber_count = i = JCF_readu2 (jcf);
767 linenumber_table = ptr = jcf->read_ptr;
769 for (ptr += 2; --i >= 0; ptr += 4)
771 int line = GET_u2 (ptr);
772 /* Set initial input_line to smallest linenumber.
773 * Needs to be set before init_function_start. */
774 if (input_line == 0 || line < input_line)
780 linenumber_table = NULL;
781 linenumber_count = 0;
784 start_java_method (method);
786 note_instructions (jcf, method);
788 give_name_to_locals (jcf);
790 /* Convert bytecode to trees. */
791 expand_byte_code (jcf, method);
796 if (flag_emit_class_files)
797 write_classfile (current_class);
801 (*debug_hooks->end_source_file) (save_location.line);
802 input_location = save_location;
805 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
808 parse_source_file_1 (tree real_file, FILE *finput)
810 int save_error_count = java_error_count;
812 /* Mark the file as parsed. */
813 HAS_BEEN_ALREADY_PARSED_P (real_file) = 1;
815 jcf_dependency_add_file (input_filename, 0);
817 lang_init_source (1); /* Error msgs have no method prototypes */
819 /* There's no point in trying to find the current encoding unless we
820 are going to do something intelligent with it -- hence the test
822 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
823 setlocale (LC_CTYPE, "");
824 if (current_encoding == NULL)
825 current_encoding = nl_langinfo (CODESET);
827 if (current_encoding == NULL || *current_encoding == '\0')
828 current_encoding = DEFAULT_ENCODING;
830 /* Initialize the parser */
831 java_init_lex (finput, current_encoding);
832 java_parse_abort_on_error ();
834 java_parse (); /* Parse and build partial tree nodes. */
835 java_parse_abort_on_error ();
838 /* Process a parsed source file, resolving names etc. */
841 parse_source_file_2 (void)
843 int save_error_count = java_error_count;
844 java_complete_class (); /* Parse unsatisfied class decl. */
845 java_parse_abort_on_error ();
849 parse_source_file_3 (void)
851 int save_error_count = java_error_count;
852 java_check_circular_reference (); /* Check on circular references */
853 java_parse_abort_on_error ();
854 java_fix_constructors (); /* Fix the constructors */
855 java_parse_abort_on_error ();
856 java_reorder_fields (); /* Reorder the fields */
860 add_predefined_file (tree name)
862 predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
866 predefined_filename_p (tree node)
870 for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
872 if (TREE_VALUE (iter) == node)
878 /* Generate a function that does all static initialization for this
882 java_emit_static_constructor (void)
886 emit_register_classes (&body);
887 write_resource_constructor (&body);
890 cgraph_build_static_cdtor ('I', body, DEFAULT_INIT_PRIORITY);
894 java_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
896 int filename_count = 0;
901 if (flag_filelist_file)
904 finput = fopen (input_filename, "r");
906 fatal_error ("can't open %s: %m", input_filename);
907 list = xmalloc(avail);
915 avail = 2 * (count + avail);
916 list = xrealloc (list, avail);
918 avail = avail - count;
920 /* Subtract to to guarantee space for final '\0'. */
921 count = fread (next, 1, avail - 1, finput);
925 fatal_error ("error closing %s: %m", input_filename);
936 list = input_filename ? xstrdup (input_filename) : 0;
940 for (next = list; ; )
943 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
944 || ch == '&' /* FIXME */)
972 int len = strlen (list);
974 obstack_grow0 (&temporary_obstack, list, len);
975 value = obstack_finish (&temporary_obstack);
979 /* Exclude file that we see twice on the command line. For
980 all files except {Class,Error,Object,RuntimeException,String,
981 Throwable}.java we can rely on maybe_get_identifier. For
982 these files, we need to do a linear search of
983 current_file_list. This search happens only for these
984 files, presumably only when we're recompiling libgcj. */
986 if ((id = maybe_get_identifier (value)))
988 if (predefined_filename_p (id))
991 for (c = current_file_list; c; c = TREE_CHAIN (c))
992 if (TREE_VALUE (c) == id)
1001 location_t warn_loc;
1002 warn_loc.file = value;
1004 warning ("%Hsource file seen twice on command line and "
1005 "will be compiled only once", &warn_loc);
1009 node = get_identifier (value);
1010 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1011 current_file_list = tree_cons (NULL_TREE, node,
1018 if (filename_count == 0)
1019 warning ("no input file specified");
1023 const char *resource_filename;
1025 /* Only one resource file may be compiled at a time. */
1026 assert (TREE_CHAIN (current_file_list) == NULL);
1028 resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
1029 compile_resource_file (resource_name, resource_filename);
1034 current_jcf = main_jcf;
1035 current_file_list = nreverse (current_file_list);
1036 for (node = current_file_list; node; node = TREE_CHAIN (node))
1038 unsigned char magic_string[4];
1040 tree name = TREE_VALUE (node);
1043 /* Skip already parsed files */
1044 real_file = get_identifier (lrealpath (IDENTIFIER_POINTER (name)));
1045 if (HAS_BEEN_ALREADY_PARSED_P (real_file))
1048 /* Close previous descriptor, if any */
1049 if (finput && fclose (finput))
1050 fatal_error ("can't close input file %s: %m", main_input_filename);
1052 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1054 fatal_error ("can't open %s: %m", IDENTIFIER_POINTER (name));
1056 #ifdef IO_BUFFER_SIZE
1057 setvbuf (finput, xmalloc (IO_BUFFER_SIZE),
1058 _IOFBF, IO_BUFFER_SIZE);
1060 input_filename = IDENTIFIER_POINTER (name);
1062 /* Figure what kind of file we're dealing with */
1063 if (fread (magic_string, 1, 4, finput) == 4)
1065 fseek (finput, 0L, SEEK_SET);
1066 magic = GET_u4 (magic_string);
1068 if (magic == 0xcafebabe)
1070 CLASS_FILE_P (node) = 1;
1071 current_jcf = ggc_alloc (sizeof (JCF));
1072 JCF_ZERO (current_jcf);
1073 current_jcf->read_state = finput;
1074 current_jcf->filbuf = jcf_filbuf_from_stdio;
1075 jcf_parse (current_jcf);
1076 TYPE_JCF (current_class) = current_jcf;
1077 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1078 TREE_PURPOSE (node) = current_class;
1080 else if (magic == (JCF_u4)ZIPMAGIC)
1082 ZIP_FILE_P (node) = 1;
1083 main_jcf = ggc_alloc (sizeof (JCF));
1084 JCF_ZERO (main_jcf);
1085 main_jcf->read_state = finput;
1086 main_jcf->filbuf = jcf_filbuf_from_stdio;
1087 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1088 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1089 localToFile = SeenZipFiles;
1090 /* Register all the classes defined there. */
1091 process_zip_dir (main_jcf->read_state);
1092 parse_zip_file_entries ();
1095 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1100 JAVA_FILE_P (node) = 1;
1101 java_push_parser_context ();
1102 java_parser_context_save_global ();
1104 parse_source_file_1 (real_file, finput);
1105 java_parser_context_restore_global ();
1106 java_pop_parser_context (1);
1110 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1112 input_filename = ctxp->filename;
1113 parse_source_file_2 ();
1116 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1118 input_filename = ctxp->filename;
1119 parse_source_file_3 ();
1122 for (node = current_file_list; node; node = TREE_CHAIN (node))
1124 input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
1125 if (CLASS_FILE_P (node))
1127 output_class = current_class = TREE_PURPOSE (node);
1128 current_jcf = TYPE_JCF (current_class);
1129 layout_class (current_class);
1130 load_inner_classes (current_class);
1131 parse_class_file ();
1132 JCF_FINISH (current_jcf);
1135 input_filename = main_input_filename;
1137 java_expand_classes ();
1138 if (java_report_errors () || flag_syntax_only)
1141 /* Expand all classes compiled from source. */
1142 java_finish_classes ();
1145 /* Arrange for any necessary initialization to happen. */
1146 java_emit_static_constructor ();
1148 /* Only finalize the compilation unit after we've told cgraph which
1149 functions have their addresses stored. */
1150 cgraph_finalize_compilation_unit ();
1155 /* Return the name of the class corresponding to the name of the file
1156 in this zip entry. The result is newly allocated using ALLOC. */
1158 compute_class_name (struct ZipDirectory *zdir)
1160 char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1164 class_name = ALLOC (zdir->filename_length + 1 - 6);
1165 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length - 6);
1166 class_name [zdir->filename_length - 6] = '\0';
1167 for (j = 0; class_name[j]; ++j)
1168 class_name[j] = class_name[j] == '/' ? '.' : class_name[j];
1172 /* Return 0 if we should skip this entry, 1 if it is a .class file, 2
1173 if it is a property file of some sort. */
1175 classify_zip_file (struct ZipDirectory *zdir)
1177 char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1179 if (zdir->filename_length > 6
1180 && !strncmp (&class_name_in_zip_dir[zdir->filename_length - 6],
1184 /* For now we drop the manifest, but not other information. */
1185 if (zdir->filename_length == 20
1186 && !strncmp (class_name_in_zip_dir, "META-INF/MANIFEST.MF", 20))
1189 /* Drop directory entries. */
1190 if (zdir->filename_length > 0
1191 && class_name_in_zip_dir[zdir->filename_length - 1] == '/')
1197 /* Process all class entries found in the zip file. */
1199 parse_zip_file_entries (void)
1201 struct ZipDirectory *zdir;
1204 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1205 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1209 switch (classify_zip_file (zdir))
1216 char *class_name = compute_class_name (zdir);
1217 class = lookup_class (get_identifier (class_name));
1219 current_jcf = TYPE_JCF (class);
1220 output_class = current_class = class;
1222 if (! CLASS_LOADED_P (class))
1224 if (! CLASS_PARSED_P (class))
1226 read_zip_member (current_jcf, zdir, localToFile);
1227 jcf_parse (current_jcf);
1229 layout_class (current_class);
1230 load_inner_classes (current_class);
1233 if (TYPE_SIZE (current_class) != error_mark_node)
1235 input_filename = current_jcf->filename;
1236 parse_class_file ();
1237 FREE (current_jcf->buffer); /* No longer necessary */
1238 /* Note: there is a way to free this buffer right after a
1239 class seen in a zip file has been parsed. The idea is the
1240 set its jcf in such a way that buffer will be reallocated
1241 the time the code for the class will be generated. FIXME. */
1248 char *file_name, *class_name_in_zip_dir, *buffer;
1250 file_name = ALLOC (zdir->filename_length + 1);
1251 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1252 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1253 file_name[zdir->filename_length] = '\0';
1254 jcf = ALLOC (sizeof (JCF));
1256 jcf->read_state = finput;
1257 jcf->filbuf = jcf_filbuf_from_stdio;
1258 jcf->java_source = 0;
1259 jcf->classname = NULL;
1260 jcf->filename = file_name;
1263 if (read_zip_member (jcf, zdir, localToFile) < 0)
1264 fatal_error ("error while reading %s from zip file", file_name);
1266 buffer = ALLOC (zdir->filename_length + 1 +
1267 (jcf->buffer_end - jcf->buffer));
1268 strcpy (buffer, file_name);
1269 /* This is not a typo: we overwrite the trailing \0 of the
1270 file name; this is just how the data is laid out. */
1271 memcpy (buffer + zdir->filename_length,
1272 jcf->buffer, jcf->buffer_end - jcf->buffer);
1274 compile_resource_data (file_name, buffer,
1275 jcf->buffer_end - jcf->buffer);
1288 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1289 jcf up for further processing and link it to the created class. */
1292 process_zip_dir (FILE *finput)
1297 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1298 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1300 char *class_name, *file_name, *class_name_in_zip_dir;
1304 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1306 /* Here we skip non-class files; we handle them later. */
1307 if (classify_zip_file (zdir) != 1)
1310 class_name = compute_class_name (zdir);
1311 file_name = ALLOC (zdir->filename_length+1);
1312 jcf = ggc_alloc (sizeof (JCF));
1315 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1316 file_name [zdir->filename_length] = '\0';
1318 class = lookup_class (get_identifier (class_name));
1320 jcf->read_state = finput;
1321 jcf->filbuf = jcf_filbuf_from_stdio;
1322 jcf->java_source = 0;
1323 jcf->classname = class_name;
1324 jcf->filename = file_name;
1327 TYPE_JCF (class) = jcf;
1331 /* Initialization. */
1334 init_jcf_parse (void)
1339 #include "gt-java-jcf-parse.h"