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> */
33 #include "java-except.h"
35 #include "java-tree.h"
46 #ifdef HAVE_NL_LANGINFO
50 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
51 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
52 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
53 #define JPOOL_UTF_DATA(JCF, INDEX) \
54 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
55 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
57 unsigned char save; unsigned char *text; \
58 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
59 text = (JCF)->read_ptr; \
60 save = text[LENGTH]; \
62 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
63 text[LENGTH] = save; \
64 JCF_SKIP (JCF, LENGTH); } while (0)
68 extern struct obstack *saveable_obstack;
69 extern struct obstack temporary_obstack;
70 extern struct obstack permanent_obstack;
72 /* Set to non-zero value in order to emit class initilization code
73 before static field references. */
74 extern int always_initialize_class_p;
76 static tree parse_roots[3] = { NULL_TREE, NULL_TREE, NULL_TREE };
78 /* The FIELD_DECL for the current field. */
79 #define current_field parse_roots[0]
81 /* The METHOD_DECL for the current method. */
82 #define current_method parse_roots[1]
84 /* A list of file names. */
85 #define current_file_list parse_roots[2]
87 /* The Java archive that provides main_class; the main input file. */
88 static struct JCF main_jcf[1];
90 static struct ZipFile *localToFile;
92 /* Declarations of some functions used here. */
93 static void handle_innerclass_attribute PARAMS ((int count, JCF *));
94 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
95 static void parse_zip_file_entries PARAMS ((void));
96 static void process_zip_dir PARAMS ((FILE *));
97 static void parse_source_file_1 PARAMS ((tree, FILE *));
98 static void parse_source_file_2 PARAMS ((void));
99 static void parse_source_file_3 PARAMS ((void));
100 static void parse_class_file PARAMS ((void));
101 static void set_source_filename PARAMS ((JCF *, int));
102 static void ggc_mark_jcf PARAMS ((void**));
103 static void jcf_parse PARAMS ((struct JCF*));
104 static void load_inner_classes PARAMS ((tree));
106 /* Mark (for garbage collection) all the tree nodes that are
107 referenced from JCF's constant pool table. Do that only if the JCF
108 hasn't been marked finished. */
114 JCF *jcf = *(JCF**) elt;
115 if (jcf != NULL && !jcf->finished)
117 CPool *cpool = &jcf->cpool;
118 int size = CPOOL_COUNT(cpool);
120 for (index = 1; index < size; index++)
122 int tag = JPOOL_TAG (jcf, index);
123 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
124 ggc_mark_tree ((tree) cpool->data[index]);
129 /* Handle "SourceFile" attribute. */
132 set_source_filename (jcf, index)
136 tree sfname_id = get_name_constant (jcf, index);
137 const char *sfname = IDENTIFIER_POINTER (sfname_id);
138 if (input_filename != NULL)
140 int old_len = strlen (input_filename);
141 int new_len = IDENTIFIER_LENGTH (sfname_id);
142 /* Use the current input_filename (derived from the class name)
143 if it has a directory prefix, but otherwise matches sfname. */
144 if (old_len > new_len
145 && strcmp (sfname, input_filename + old_len - new_len) == 0
146 && (input_filename[old_len - new_len - 1] == '/'
147 || input_filename[old_len - new_len - 1] == '\\'))
150 input_filename = sfname;
151 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
152 if (current_class == main_class) main_input_filename = input_filename;
155 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
157 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
158 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
159 current_class = give_name_to_class (jcf, THIS); \
160 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
162 #define HANDLE_CLASS_INTERFACE(INDEX) \
163 add_interface (current_class, get_class_constant (jcf, INDEX))
165 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
166 { int sig_index = SIGNATURE; \
167 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
168 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
169 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
170 if ((ACCESS_FLAGS) & ACC_FINAL) \
171 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
174 #define HANDLE_END_FIELDS() \
175 (current_field = NULL_TREE)
177 #define HANDLE_CONSTANTVALUE(INDEX) \
178 { tree constant; int index = INDEX; \
179 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
180 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
181 constant = build_utf8_ref (name); \
184 constant = get_constant (jcf, index); \
185 set_constant_value (current_field, constant); }
187 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
188 (current_method = add_method (current_class, ACCESS_FLAGS, \
189 get_name_constant (jcf, NAME), \
190 get_name_constant (jcf, SIGNATURE)), \
191 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
192 DECL_LINENUMBERS_OFFSET (current_method) = 0)
194 #define HANDLE_END_METHODS() \
195 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
196 if (handle_type != current_class) layout_type (handle_type); \
197 current_method = NULL_TREE; }
199 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
200 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
201 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
202 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
203 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
205 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
207 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
208 JCF_SKIP (jcf, n * 10); }
210 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
212 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
213 JCF_SKIP (jcf, n * 4); }
215 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
218 tree list = DECL_FUNCTION_THROWS (current_method); \
221 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
222 list = tree_cons (NULL_TREE, thrown_class, list); \
224 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
227 /* Link seen inner classes to their outer context and register the
228 inner class to its outer context. They will be later loaded. */
229 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
230 handle_innerclass_attribute (COUNT, jcf)
232 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
234 /* Irrelevant decls should have been nullified by the END macros. \
235 We only handle the `Synthetic' attribute on method DECLs. \
236 DECL_ARTIFICIAL on fields is used for something else (See \
237 PUSH_FIELD in java-tree.h) */ \
238 if (current_method) \
239 DECL_ARTIFICIAL (current_method) = 1; \
242 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
244 if (current_class == object_type_node) \
245 jcf->right_zip = 1; \
248 #include "jcf-reader.c"
251 parse_signature (jcf, sig_index)
255 if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
256 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
259 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
260 JPOOL_UTF_LENGTH (jcf, sig_index));
264 get_constant (jcf, index)
270 if (index <= 0 || index >= JPOOL_SIZE(jcf))
272 tag = JPOOL_TAG (jcf, index);
273 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
274 return (tree) jcf->cpool.data[index];
277 case CONSTANT_Integer:
279 jint num = JPOOL_INT(jcf, index);
280 value = build_int_2 (num, num < 0 ? -1 : 0);
281 TREE_TYPE (value) = int_type_node;
286 unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
287 HOST_WIDE_INT lo, hi;
288 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
289 num = JPOOL_UINT (jcf, index+1);
290 add_double (lo, hi, num, 0, &lo, &hi);
291 value = build_int_2 (lo, hi);
292 TREE_TYPE (value) = long_type_node;
293 force_fit_type (value, 0);
296 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
299 jint num = JPOOL_INT(jcf, index);
301 d = REAL_VALUE_FROM_TARGET_SINGLE (num);
302 value = build_real (float_type_node, d);
305 case CONSTANT_Double:
307 HOST_WIDE_INT num[2];
309 HOST_WIDE_INT lo, hi;
310 num[0] = JPOOL_UINT (jcf, index);
311 lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
312 num[0] = JPOOL_UINT (jcf, index+1);
313 add_double (lo, hi, num[0], 0, &lo, &hi);
315 /* Since ereal_from_double expects an array of HOST_WIDE_INT
316 in the target's format, we swap the elements for big endian
317 targets, unless HOST_WIDE_INT is sufficiently large to
318 contain a target double, in which case the 2nd element
321 FIXME: Is this always right for cross targets? */
322 if (FLOAT_WORDS_BIG_ENDIAN && sizeof(num[0]) < 8)
332 d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
333 value = build_real (double_type_node, d);
336 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
337 case CONSTANT_String:
339 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
340 const char *utf8_ptr = IDENTIFIER_POINTER (name);
341 int utf8_len = IDENTIFIER_LENGTH (name);
342 const unsigned char *utf8;
345 /* Check for a malformed Utf8 string. */
346 utf8 = (const unsigned char *) utf8_ptr;
350 int char_len = UT8_CHAR_LENGTH (*utf8);
351 if (char_len < 0 || char_len > 3 || char_len > i)
352 fatal_error ("bad string constant");
358 /* Allocate a new string value. */
359 value = build_string (utf8_len, utf8_ptr);
360 TREE_TYPE (value) = build_pointer_type (string_type_node);
366 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
367 jcf->cpool.data [index] = (jword) value;
370 internal_error ("bad value constant type %d, index %d",
371 JPOOL_TAG (jcf, index), index);
375 get_name_constant (jcf, index)
379 tree name = get_constant (jcf, index);
381 if (TREE_CODE (name) != IDENTIFIER_NODE)
387 /* Handle reading innerclass attributes. If a non zero entry (denoting
388 a non anonymous entry) is found, We augment the inner class list of
389 the outer context with the newly resolved innerclass. */
392 handle_innerclass_attribute (count, jcf)
399 /* Read inner_class_info_index. This may be 0 */
400 int icii = JCF_readu2 (jcf);
401 /* Read outer_class_info_index. If the innerclasses attribute
402 entry isn't a member (like an inner class) the value is 0. */
403 int ocii = JCF_readu2 (jcf);
404 /* Read inner_name_index. If the class we're dealing with is
405 an annonymous class, it must be 0. */
406 int ini = JCF_readu2 (jcf);
407 /* Read the access flag. */
408 int acc = JCF_readu2 (jcf);
409 /* If icii is 0, don't try to read the class. */
412 tree class = get_class_constant (jcf, icii);
413 tree decl = TYPE_NAME (class);
414 /* Skip reading further if ocii is null */
415 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
417 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
418 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
419 set_class_decl_access_flags (acc, decl);
420 DECL_CONTEXT (decl) = outer;
421 DECL_INNER_CLASS_LIST (outer) =
422 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
423 CLASS_COMPLETE_P (decl) = 1;
430 give_name_to_class (jcf, i)
434 if (i <= 0 || i >= JPOOL_SIZE (jcf)
435 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
440 int j = JPOOL_USHORT1 (jcf, i);
441 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
442 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
443 JPOOL_UTF_LENGTH (jcf, j));
444 this_class = lookup_class (class_name);
445 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
447 if (main_input_filename == NULL && jcf == main_jcf)
448 main_input_filename = input_filename;
450 jcf->cpool.data[i] = (jword) this_class;
451 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
456 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
459 get_class_constant (JCF *jcf , int i)
462 if (i <= 0 || i >= JPOOL_SIZE (jcf)
463 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
466 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
468 int name_index = JPOOL_USHORT1 (jcf, i);
469 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
470 const char *name = JPOOL_UTF_DATA (jcf, name_index);
471 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
473 if (name[0] == '[') /* Handle array "classes". */
474 type = TREE_TYPE (parse_signature_string (name, nlength));
477 tree cname = unmangle_classname (name, nlength);
478 type = lookup_class (cname);
480 jcf->cpool.data[i] = (jword) type;
481 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
484 type = (tree) jcf->cpool.data[i];
488 /* Read a class with the fully qualified-name NAME.
489 Return 1 iff we read the requested file.
490 (It is still possible we failed if the file did not
491 define the class it is supposed to.) */
498 tree icv, class = NULL_TREE;
499 tree save_current_class = current_class;
500 const char *save_input_filename = input_filename;
501 JCF *save_current_jcf = current_jcf;
503 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
505 class = TREE_TYPE (icv);
506 jcf = TYPE_JCF (class);
513 this_jcf.zipd = NULL;
515 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
522 if (current_jcf->java_source)
524 const char *filename = current_jcf->filename;
529 java_parser_context_save_global ();
530 java_push_parser_context ();
531 BUILD_FILENAME_IDENTIFIER_NODE (file, filename);
532 generate = IS_A_COMMAND_LINE_FILENAME_P (file);
533 if (wfl_operator == NULL_TREE)
534 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
535 EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
536 input_filename = ggc_strdup (filename);
537 current_class = NULL_TREE;
538 current_function_decl = NULL_TREE;
539 if (!HAS_BEEN_ALREADY_PARSED_P (file))
541 if (!(finput = fopen (input_filename, "r")))
542 fatal_io_error ("can't reopen %s", input_filename);
543 parse_source_file_1 (file, finput);
544 parse_source_file_2 ();
545 parse_source_file_3 ();
547 fatal_io_error ("can't close %s", input_filename);
549 JCF_FINISH (current_jcf);
550 java_pop_parser_context (generate);
551 java_parser_context_restore_global ();
555 if (class == NULL_TREE || ! CLASS_PARSED_P (class))
557 java_parser_context_save_global ();
558 java_push_parser_context ();
559 current_class = class;
560 input_filename = current_jcf->filename;
561 if (JCF_SEEN_IN_ZIP (current_jcf))
562 read_zip_member(current_jcf,
563 current_jcf->zipd, current_jcf->zipd->zipf);
564 jcf_parse (current_jcf);
565 class = current_class;
566 java_pop_parser_context (0);
567 java_parser_context_restore_global ();
569 layout_class (class);
570 load_inner_classes (class);
573 current_class = save_current_class;
574 input_filename = save_input_filename;
575 current_jcf = save_current_jcf;
579 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
580 called from the parser, otherwise it's a RECORD_TYPE node. If
581 VERBOSE is 1, print error message on failure to load a class. */
583 /* Replace calls to load_class by having callers call read_class directly
584 - and then perhaps rename read_class to load_class. FIXME */
587 load_class (class_or_name, verbose)
594 /* class_or_name can be the name of the class we want to load */
595 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
596 name = class_or_name;
597 /* In some cases, it's a dependency that we process earlier that
599 else if (TREE_CODE (class_or_name) == TREE_LIST)
600 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
601 /* Or it's a type in the making */
603 name = DECL_NAME (TYPE_NAME (class_or_name));
610 if ((class_loaded = read_class (name)))
613 /* We failed loading name. Now consider that we might be looking
614 for a inner class. */
615 if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
616 || (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
620 name = get_identifier (IDENTIFIER_POINTER (name));
623 /* Otherwise, we failed, we bail. */
628 if (!class_loaded && verbose)
629 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
632 /* Parse the .class file JCF. */
640 if (jcf_parse_preamble (jcf) != 0)
641 fatal_error ("not a valid Java .class file");
642 code = jcf_parse_constant_pool (jcf);
644 fatal_error ("error while parsing constant pool");
645 code = verify_constant_pool (jcf);
647 fatal_error ("error in constant pool entry #%d\n", code);
649 jcf_parse_class (jcf);
650 if (main_class == NULL_TREE)
651 main_class = current_class;
652 if (! quiet_flag && TYPE_NAME (current_class))
653 fprintf (stderr, " %s %s",
654 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
655 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
656 if (CLASS_PARSED_P (current_class))
658 /* FIXME - where was first time */
659 fatal_error ("reading class %s for the second time from %s",
660 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
663 CLASS_PARSED_P (current_class) = 1;
665 for (i = 1; i < JPOOL_SIZE(jcf); i++)
667 switch (JPOOL_TAG (jcf, i))
670 get_class_constant (jcf, i);
675 code = jcf_parse_fields (jcf);
677 fatal_error ("error while parsing fields");
678 code = jcf_parse_methods (jcf);
680 fatal_error ("error while parsing methods");
681 code = jcf_parse_final_attributes (jcf);
683 fatal_error ("error while parsing final attributes");
685 /* The fields of class_type_node are already in correct order. */
686 if (current_class != class_type_node && current_class != object_type_node)
687 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
689 if (current_class == object_type_node)
691 layout_class_methods (object_type_node);
692 /* If we don't have the right archive, emit a verbose warning.
693 If we're generating bytecode, emit the warning only if
694 -fforce-classes-archive-check was specified. */
696 && (!flag_emit_class_files || flag_force_classes_archive_check))
697 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);
700 all_class_list = tree_cons (NULL_TREE,
701 TYPE_NAME (current_class), all_class_list );
704 /* If we came across inner classes, load them now. */
706 load_inner_classes (cur_class)
710 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
711 current = TREE_CHAIN (current))
713 tree name = DECL_NAME (TREE_PURPOSE (current));
714 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
715 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
716 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
717 load_class (name, 1);
722 init_outgoing_cpool ()
724 current_constant_pool_data_ref = NULL_TREE;
725 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
726 memset (outgoing_cpool, 0, sizeof (struct CPool));
733 const char *save_input_filename = input_filename;
734 int save_lineno = lineno;
736 java_layout_seen_class_methods ();
738 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
740 (*debug_hooks->start_source_file) (lineno, input_filename);
741 init_outgoing_cpool ();
743 /* Currently we always have to emit calls to _Jv_InitClass when
744 compiling from class files. */
745 always_initialize_class_p = 1;
747 for (field = TYPE_FIELDS (CLASS_TO_HANDLE_TYPE (current_class));
748 field != NULL_TREE; field = TREE_CHAIN (field))
749 if (FIELD_STATIC (field))
750 DECL_EXTERNAL (field) = 0;
752 for (method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
753 method != NULL_TREE; method = TREE_CHAIN (method))
755 JCF *jcf = current_jcf;
757 if (METHOD_ABSTRACT (method))
760 if (METHOD_NATIVE (method))
767 /* We need to compute the DECL_MAX_LOCALS. We need to take
768 the wide types into account too. */
769 for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
770 arg != end_params_node;
771 arg = TREE_CHAIN (arg), decl_max_locals += 1)
773 if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
774 decl_max_locals += 1;
776 DECL_MAX_LOCALS (method) = decl_max_locals;
777 start_java_method (method);
778 give_name_to_locals (jcf);
779 expand_expr_stmt (build_jni_stub (method));
784 if (DECL_CODE_OFFSET (method) == 0)
786 current_function_decl = method;
787 error ("missing Code attribute");
792 if (DECL_LINENUMBERS_OFFSET (method))
795 register unsigned char *ptr;
796 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
797 linenumber_count = i = JCF_readu2 (jcf);
798 linenumber_table = ptr = jcf->read_ptr;
800 for (ptr += 2; --i >= 0; ptr += 4)
802 int line = GET_u2 (ptr);
803 /* Set initial lineno lineno to smallest linenumber.
804 * Needs to be set before init_function_start. */
805 if (lineno == 0 || line < lineno)
811 linenumber_table = NULL;
812 linenumber_count = 0;
815 start_java_method (method);
817 note_instructions (jcf, method);
819 give_name_to_locals (jcf);
821 /* Actually generate code. */
822 expand_byte_code (jcf, method);
827 if (flag_emit_class_files)
828 write_classfile (current_class);
832 (*debug_hooks->end_source_file) (save_lineno);
833 input_filename = save_input_filename;
834 lineno = save_lineno;
837 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
840 parse_source_file_1 (file, finput)
844 int save_error_count = java_error_count;
845 /* Mark the file as parsed */
846 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
848 jcf_dependency_add_file (input_filename, 0);
850 lang_init_source (1); /* Error msgs have no method prototypes */
852 /* There's no point in trying to find the current encoding unless we
853 are going to do something intelligent with it -- hence the test
855 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_NL_LANGINFO)
856 setlocale (LC_CTYPE, "");
857 if (current_encoding == NULL)
858 current_encoding = nl_langinfo (CODESET);
860 if (current_encoding == NULL || *current_encoding == '\0')
861 current_encoding = DEFAULT_ENCODING;
863 /* Initialize the parser */
864 java_init_lex (finput, current_encoding);
865 java_parse_abort_on_error ();
867 java_parse (); /* Parse and build partial tree nodes. */
868 java_parse_abort_on_error ();
871 /* Process a parsed source file, resolving names etc. */
874 parse_source_file_2 ()
876 int save_error_count = java_error_count;
877 java_complete_class (); /* Parse unsatisfied class decl. */
878 java_parse_abort_on_error ();
882 parse_source_file_3 ()
884 int save_error_count = java_error_count;
885 java_check_circular_reference (); /* Check on circular references */
886 java_parse_abort_on_error ();
887 java_fix_constructors (); /* Fix the constructors */
888 java_parse_abort_on_error ();
889 java_reorder_fields (); /* Reorder the fields */
893 add_predefined_file (name)
896 predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
900 predefined_filename_p (node)
905 for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
907 if (TREE_VALUE (iter) == node)
914 java_parse_file (set_yydebug)
915 int set_yydebug ATTRIBUTE_UNUSED;
917 int filename_count = 0;
922 if (flag_filelist_file)
925 finput = fopen (input_filename, "r");
927 fatal_io_error ("can't open %s", input_filename);
928 list = xmalloc(avail);
936 avail = 2 * (count + avail);
937 list = xrealloc (list, avail);
939 avail = avail - count;
941 /* Subtract to to guarantee space for final '\0'. */
942 count = fread (next, 1, avail - 1, finput);
946 fatal_io_error ("error closing %s", input_filename);
957 list = xstrdup (input_filename);
961 for (next = list; ; )
964 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
965 || ch == '&' /* FIXME */)
993 int len = strlen (list);
995 obstack_grow0 (&temporary_obstack, list, len);
996 value = obstack_finish (&temporary_obstack);
1000 /* Exclude file that we see twice on the command line. For
1001 all files except {Class,Error,Object,RuntimeException,String,
1002 Throwable}.java we can rely on maybe_get_identifier. For
1003 these files, we need to do a linear search of
1004 current_file_list. This search happens only for these
1005 files, presumably only when we're recompiling libgcj. */
1007 if ((id = maybe_get_identifier (value)))
1009 if (predefined_filename_p (id))
1012 for (c = current_file_list; c; c = TREE_CHAIN (c))
1013 if (TREE_VALUE (c) == id)
1022 const char *saved_input_filename = input_filename;
1023 input_filename = value;
1024 warning ("source file seen twice on command line and will be compiled only once");
1025 input_filename = saved_input_filename;
1029 BUILD_FILENAME_IDENTIFIER_NODE (node, value);
1030 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1031 current_file_list = tree_cons (NULL_TREE, node,
1039 if (filename_count == 0)
1040 warning ("no input file specified");
1044 const char *resource_filename;
1046 /* Only one resource file may be compiled at a time. */
1047 assert (TREE_CHAIN (current_file_list) == NULL);
1049 resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
1050 compile_resource_file (resource_name, resource_filename);
1055 current_jcf = main_jcf;
1056 current_file_list = nreverse (current_file_list);
1057 for (node = current_file_list; node; node = TREE_CHAIN (node))
1059 unsigned char magic_string[4];
1061 tree name = TREE_VALUE (node);
1063 /* Skip already parsed files */
1064 if (HAS_BEEN_ALREADY_PARSED_P (name))
1067 /* Close previous descriptor, if any */
1068 if (finput && fclose (finput))
1069 fatal_io_error ("can't close input file %s", main_input_filename);
1071 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1073 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name));
1075 #ifdef IO_BUFFER_SIZE
1076 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
1077 _IOFBF, IO_BUFFER_SIZE);
1079 input_filename = IDENTIFIER_POINTER (name);
1081 /* Figure what kind of file we're dealing with */
1082 if (fread (magic_string, 1, 4, finput) == 4)
1084 fseek (finput, 0L, SEEK_SET);
1085 magic = GET_u4 (magic_string);
1087 if (magic == 0xcafebabe)
1089 CLASS_FILE_P (node) = 1;
1090 current_jcf = ALLOC (sizeof (JCF));
1091 JCF_ZERO (current_jcf);
1092 current_jcf->read_state = finput;
1093 current_jcf->filbuf = jcf_filbuf_from_stdio;
1094 jcf_parse (current_jcf);
1095 TYPE_JCF (current_class) = current_jcf;
1096 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1097 TREE_PURPOSE (node) = current_class;
1099 else if (magic == (JCF_u4)ZIPMAGIC)
1101 ZIP_FILE_P (node) = 1;
1102 JCF_ZERO (main_jcf);
1103 main_jcf->read_state = finput;
1104 main_jcf->filbuf = jcf_filbuf_from_stdio;
1105 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1106 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1107 localToFile = SeenZipFiles;
1108 /* Register all the class defined there. */
1109 process_zip_dir (main_jcf->read_state);
1110 parse_zip_file_entries ();
1113 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1118 JAVA_FILE_P (node) = 1;
1119 java_push_parser_context ();
1120 java_parser_context_save_global ();
1121 parse_source_file_1 (name, finput);
1122 java_parser_context_restore_global ();
1123 java_pop_parser_context (1);
1127 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1129 input_filename = ctxp->filename;
1130 parse_source_file_2 ();
1133 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1135 input_filename = ctxp->filename;
1136 parse_source_file_3 ();
1139 for (node = current_file_list; node; node = TREE_CHAIN (node))
1141 input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
1142 if (CLASS_FILE_P (node))
1144 current_class = TREE_PURPOSE (node);
1145 current_jcf = TYPE_JCF (current_class);
1146 layout_class (current_class);
1147 load_inner_classes (current_class);
1148 parse_class_file ();
1149 JCF_FINISH (current_jcf);
1152 input_filename = main_input_filename;
1154 java_expand_classes ();
1155 if (!java_report_errors () && !flag_syntax_only)
1157 emit_register_classes ();
1158 if (flag_indirect_dispatch)
1159 emit_offset_symbol_table ();
1163 /* Process all class entries found in the zip file. */
1165 parse_zip_file_entries (void)
1167 struct ZipDirectory *zdir;
1170 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1171 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1175 /* We don't need to consider those files. */
1176 if (!zdir->size || !zdir->filename_offset)
1179 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
1180 current_jcf = TYPE_JCF (class);
1181 current_class = class;
1183 if ( !CLASS_LOADED_P (class))
1185 if (! CLASS_PARSED_P (class))
1187 read_zip_member(current_jcf, zdir, localToFile);
1188 jcf_parse (current_jcf);
1190 layout_class (current_class);
1191 load_inner_classes (current_class);
1194 if (TYPE_SIZE (current_class) != error_mark_node)
1196 input_filename = current_jcf->filename;
1197 parse_class_file ();
1198 FREE (current_jcf->buffer); /* No longer necessary */
1199 /* Note: there is a way to free this buffer right after a
1200 class seen in a zip file has been parsed. The idea is the
1201 set its jcf in such a way that buffer will be reallocated
1202 the time the code for the class will be generated. FIXME. */
1207 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1208 jcf up for further processing and link it to the created class. */
1211 process_zip_dir (FILE *finput)
1216 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1217 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1219 char *class_name, *file_name, *class_name_in_zip_dir;
1224 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1226 /* We choose to not to process entries with a zero size or entries
1227 not bearing the .class extension. */
1228 if (!zdir->size || !zdir->filename_offset ||
1229 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
1232 /* So it will be skipped in parse_zip_file_entries */
1237 class_name = ALLOC (zdir->filename_length+1-6);
1238 file_name = ALLOC (zdir->filename_length+1);
1239 jcf = ALLOC (sizeof (JCF));
1242 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
1243 class_name [zdir->filename_length-6] = '\0';
1244 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1245 file_name [zdir->filename_length] = '\0';
1247 for (j=0; class_name[j]; j++)
1248 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
1250 /* Yes, we write back the true class name into the zip directory. */
1251 strcpy (class_name_in_zip_dir, class_name);
1252 zdir->filename_length = j;
1253 class = lookup_class (get_identifier (class_name));
1255 jcf->read_state = finput;
1256 jcf->filbuf = jcf_filbuf_from_stdio;
1257 jcf->java_source = 0;
1258 jcf->classname = class_name;
1259 jcf->filename = file_name;
1262 TYPE_JCF (class) = jcf;
1266 /* Initialization. */
1271 /* Register roots with the garbage collector. */
1272 ggc_add_tree_root (parse_roots, ARRAY_SIZE (parse_roots));
1274 ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf);