1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
21 Java and all Java-based marks are trademarks or registered trademarks
22 of Sun Microsystems, Inc. in the United States and other countries.
23 The Free Software Foundation is independent of Sun Microsystems, Inc. */
25 /* Written by Per Bothner <bothner@cygnus.com> */
32 #include "java-except.h"
34 #include "java-tree.h"
44 #ifdef HAVE_NL_LANGINFO
48 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
49 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
50 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
51 #define JPOOL_UTF_DATA(JCF, INDEX) \
52 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
53 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
55 unsigned char save; unsigned char *text; \
56 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
57 text = (JCF)->read_ptr; \
58 save = text[LENGTH]; \
60 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
61 text[LENGTH] = save; \
62 JCF_SKIP (JCF, LENGTH); } while (0)
66 extern struct obstack *saveable_obstack;
67 extern struct obstack temporary_obstack;
68 extern struct obstack permanent_obstack;
70 /* Set to non-zero value in order to emit class initilization code
71 before static field references. */
72 extern int always_initialize_class_p;
74 static tree parse_roots[3] = { NULL_TREE, NULL_TREE, NULL_TREE };
76 /* The FIELD_DECL for the current field. */
77 #define current_field parse_roots[0]
79 /* The METHOD_DECL for the current method. */
80 #define current_method parse_roots[1]
82 /* A list of file names. */
83 #define current_file_list parse_roots[2]
85 /* The Java archive that provides main_class; the main input file. */
86 static struct JCF main_jcf[1];
88 static struct ZipFile *localToFile;
90 /* Declarations of some functions used here. */
91 static void handle_innerclass_attribute PARAMS ((int count, JCF *));
92 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
93 static void parse_zip_file_entries PARAMS ((void));
94 static void process_zip_dir PARAMS ((FILE *));
95 static void parse_source_file_1 PARAMS ((tree, FILE *));
96 static void parse_source_file_2 PARAMS ((void));
97 static void parse_class_file PARAMS ((void));
98 static void set_source_filename PARAMS ((JCF *, int));
99 static int predefined_filename_p PARAMS ((tree));
100 static void ggc_mark_jcf PARAMS ((void**));
101 static void jcf_parse PARAMS ((struct JCF*));
102 static void load_inner_classes PARAMS ((tree));
104 /* Mark (for garbage collection) all the tree nodes that are
105 referenced from JCF's constant pool table. Do that only if the JCF
106 hasn't been marked finished. */
112 JCF *jcf = *(JCF**) elt;
113 if (jcf != NULL && !jcf->finished)
115 CPool *cpool = &jcf->cpool;
116 int size = CPOOL_COUNT(cpool);
118 for (index = 1; index < size; index++)
120 int tag = JPOOL_TAG (jcf, index);
121 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
122 ggc_mark_tree ((tree) cpool->data[index]);
127 /* Handle "SourceFile" attribute. */
130 set_source_filename (jcf, index)
134 tree sfname_id = get_name_constant (jcf, index);
135 const char *sfname = IDENTIFIER_POINTER (sfname_id);
136 if (input_filename != NULL)
138 int old_len = strlen (input_filename);
139 int new_len = IDENTIFIER_LENGTH (sfname_id);
140 /* Use the current input_filename (derived from the class name)
141 if it has a directory prefix, but otherwise matches sfname. */
142 if (old_len > new_len
143 && strcmp (sfname, input_filename + old_len - new_len) == 0
144 && (input_filename[old_len - new_len - 1] == '/'
145 || input_filename[old_len - new_len - 1] == '\\'))
148 input_filename = sfname;
149 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
150 if (current_class == main_class) main_input_filename = input_filename;
153 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
155 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
156 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
157 current_class = give_name_to_class (jcf, THIS); \
158 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
160 #define HANDLE_CLASS_INTERFACE(INDEX) \
161 add_interface (current_class, get_class_constant (jcf, INDEX))
163 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
164 { int sig_index = SIGNATURE; \
165 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
166 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
167 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
168 if ((ACCESS_FLAGS) & ACC_FINAL) \
169 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
172 #define HANDLE_END_FIELDS() \
173 (current_field = NULL_TREE)
175 #define HANDLE_CONSTANTVALUE(INDEX) \
176 { tree constant; int index = INDEX; \
177 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
178 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
179 constant = build_utf8_ref (name); \
182 constant = get_constant (jcf, index); \
183 set_constant_value (current_field, constant); }
185 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
186 (current_method = add_method (current_class, ACCESS_FLAGS, \
187 get_name_constant (jcf, NAME), \
188 get_name_constant (jcf, SIGNATURE)), \
189 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
190 DECL_LINENUMBERS_OFFSET (current_method) = 0)
192 #define HANDLE_END_METHODS() \
193 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
194 if (handle_type != current_class) layout_type (handle_type); \
195 current_method = NULL_TREE; }
197 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
198 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
199 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
200 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
201 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
203 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
205 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
206 JCF_SKIP (jcf, n * 10); }
208 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
210 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
211 JCF_SKIP (jcf, n * 4); }
213 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
216 tree list = DECL_FUNCTION_THROWS (current_method); \
219 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
220 list = tree_cons (NULL_TREE, thrown_class, list); \
222 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
225 /* Link seen inner classes to their outer context and register the
226 inner class to its outer context. They will be later loaded. */
227 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
228 handle_innerclass_attribute (COUNT, jcf)
230 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
232 /* Irrelevant decls should have been nullified by the END macros. \
233 We only handle the `Synthetic' attribute on method DECLs. \
234 DECL_ARTIFICIAL on fields is used for something else (See \
235 PUSH_FIELD in java-tree.h) */ \
236 if (current_method) \
237 DECL_ARTIFICIAL (current_method) = 1; \
240 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
242 if (current_class == object_type_node) \
243 jcf->right_zip = 1; \
246 #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));
266 /* Make identifier nodes long enough for the language-specific slots. */
267 set_identifier_size (sizeof (struct lang_identifier));
278 get_constant (jcf, index)
284 if (index <= 0 || index >= JPOOL_SIZE(jcf))
286 tag = JPOOL_TAG (jcf, index);
287 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
288 return (tree) jcf->cpool.data[index];
291 case CONSTANT_Integer:
293 jint num = JPOOL_INT(jcf, index);
294 value = build_int_2 (num, num < 0 ? -1 : 0);
295 TREE_TYPE (value) = int_type_node;
300 jint num = JPOOL_INT (jcf, index);
301 HOST_WIDE_INT lo, hi;
302 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
303 num = JPOOL_INT (jcf, index+1) & 0xffffffff;
304 add_double (lo, hi, num, 0, &lo, &hi);
305 value = build_int_2 (lo, hi);
306 TREE_TYPE (value) = long_type_node;
307 force_fit_type (value, 0);
310 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
313 jint num = JPOOL_INT(jcf, index);
315 #ifdef REAL_ARITHMETIC
316 d = REAL_VALUE_FROM_TARGET_SINGLE (num);
318 union { float f; jint i; } u;
322 value = build_real (float_type_node, d);
325 case CONSTANT_Double:
327 HOST_WIDE_INT num[2];
329 HOST_WIDE_INT lo, hi;
330 num[0] = JPOOL_INT (jcf, index);
331 lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
332 num[0] = JPOOL_INT (jcf, index+1);
333 add_double (lo, hi, num[0], 0, &lo, &hi);
334 if (FLOAT_WORDS_BIG_ENDIAN)
344 #ifdef REAL_ARITHMETIC
345 d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
348 union { double d; jint i[2]; } u;
349 u.i[0] = (jint) num[0];
350 u.i[1] = (jint) num[1];
354 value = build_real (double_type_node, d);
357 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
358 case CONSTANT_String:
360 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
361 const char *utf8_ptr = IDENTIFIER_POINTER (name);
362 int utf8_len = IDENTIFIER_LENGTH (name);
363 unsigned char *str_ptr;
365 const unsigned char *utf8;
368 /* Count the number of Unicode characters in the string,
369 while checking for a malformed Utf8 string. */
370 utf8 = (const unsigned char *) utf8_ptr;
375 int char_len = UT8_CHAR_LENGTH (*utf8);
376 if (char_len < 0 || char_len > 3 || char_len > i)
377 fatal_error ("bad string constant");
384 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
385 into the new space. */
386 str_ptr = (unsigned char *) alloca (2 * str_len);
388 utf8 = (const unsigned char *)utf8_ptr;
390 for (i = 0; i < str_len; i++)
393 int char_len = UT8_CHAR_LENGTH (*utf8);
397 char_value = *utf8++;
400 char_value = *utf8++ & 0x1F;
401 char_value = (char_value << 6) | (*utf8++ & 0x3F);
404 char_value = *utf8++ & 0x0F;
405 char_value = (char_value << 6) | (*utf8++ & 0x3F);
406 char_value = (char_value << 6) | (*utf8++ & 0x3F);
411 if (BYTES_BIG_ENDIAN)
413 *str++ = char_value >> 8;
414 *str++ = char_value & 0xFF;
418 *str++ = char_value & 0xFF;
419 *str++ = char_value >> 8;
422 value = build_string (str - str_ptr, str_ptr);
423 TREE_TYPE (value) = build_pointer_type (string_type_node);
429 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
430 jcf->cpool.data [index] = (jword) value;
433 internal_error ("bad value constant type %d, index %d",
434 JPOOL_TAG (jcf, index), index);
438 get_name_constant (jcf, index)
442 tree name = get_constant (jcf, index);
444 if (TREE_CODE (name) != IDENTIFIER_NODE)
450 /* Handle reading innerclass attributes. If a non zero entry (denoting
451 a non anonymous entry) is found, We augment the inner class list of
452 the outer context with the newly resolved innerclass. */
455 handle_innerclass_attribute (count, jcf)
462 /* Read inner_class_info_index. This may be 0 */
463 int icii = JCF_readu2 (jcf);
464 /* Read outer_class_info_index. If the innerclasses attribute
465 entry isn't a member (like an inner class) the value is 0. */
466 int ocii = JCF_readu2 (jcf);
467 /* Read inner_name_index. If the class we're dealing with is
468 an annonymous class, it must be 0. */
469 int ini = JCF_readu2 (jcf);
470 /* Read the access flag. */
471 int acc = JCF_readu2 (jcf);
472 /* If icii is 0, don't try to read the class. */
475 tree class = get_class_constant (jcf, icii);
476 tree decl = TYPE_NAME (class);
477 /* Skip reading further if ocii is null */
478 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
480 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
481 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
482 set_class_decl_access_flags (acc, decl);
483 DECL_CONTEXT (decl) = outer;
484 DECL_INNER_CLASS_LIST (outer) =
485 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
486 CLASS_COMPLETE_P (decl) = 1;
493 give_name_to_class (jcf, i)
497 if (i <= 0 || i >= JPOOL_SIZE (jcf)
498 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
503 int j = JPOOL_USHORT1 (jcf, i);
504 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
505 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
506 JPOOL_UTF_LENGTH (jcf, j));
507 this_class = lookup_class (class_name);
508 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
510 if (main_input_filename == NULL && jcf == main_jcf)
511 main_input_filename = input_filename;
513 jcf->cpool.data[i] = (jword) this_class;
514 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
519 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
522 get_class_constant (JCF *jcf , int i)
525 if (i <= 0 || i >= JPOOL_SIZE (jcf)
526 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
529 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
531 int name_index = JPOOL_USHORT1 (jcf, i);
532 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
533 const char *name = JPOOL_UTF_DATA (jcf, name_index);
534 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
536 if (name[0] == '[') /* Handle array "classes". */
537 type = TREE_TYPE (parse_signature_string (name, nlength));
540 tree cname = unmangle_classname (name, nlength);
541 type = lookup_class (cname);
543 jcf->cpool.data[i] = (jword) type;
544 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
547 type = (tree) jcf->cpool.data[i];
551 /* Read a class with the fully qualified-name NAME.
552 Return 1 iff we read the requested file.
553 (It is still possible we failed if the file did not
554 define the class it is supposed to.) */
561 tree icv, class = NULL_TREE;
562 tree save_current_class = current_class;
563 const char *save_input_filename = input_filename;
564 JCF *save_current_jcf = current_jcf;
566 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
568 class = TREE_TYPE (icv);
569 jcf = TYPE_JCF (class);
576 this_jcf.zipd = NULL;
578 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
585 if (current_jcf->java_source)
587 const char *filename = current_jcf->filename;
592 java_parser_context_save_global ();
593 java_push_parser_context ();
594 BUILD_FILENAME_IDENTIFIER_NODE (file, filename);
595 generate = IS_A_COMMAND_LINE_FILENAME_P (file);
596 if (wfl_operator == NULL_TREE)
597 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
598 EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
599 input_filename = ggc_strdup (filename);
600 current_class = NULL_TREE;
601 current_function_decl = NULL_TREE;
602 if (!HAS_BEEN_ALREADY_PARSED_P (file))
604 if (!(finput = fopen (input_filename, "r")))
605 fatal_io_error ("can't reopen %s", input_filename);
606 parse_source_file_1 (file, finput);
607 parse_source_file_2 ();
609 fatal_io_error ("can't close %s", input_filename);
611 JCF_FINISH (current_jcf);
612 java_pop_parser_context (generate);
613 java_parser_context_restore_global ();
617 if (class == NULL_TREE || ! CLASS_PARSED_P (class))
619 java_parser_context_save_global ();
620 java_push_parser_context ();
621 current_class = class;
622 input_filename = current_jcf->filename;
623 if (JCF_SEEN_IN_ZIP (current_jcf))
624 read_zip_member(current_jcf,
625 current_jcf->zipd, current_jcf->zipd->zipf);
626 jcf_parse (current_jcf);
627 class = current_class;
628 java_pop_parser_context (0);
629 java_parser_context_restore_global ();
631 layout_class (class);
632 load_inner_classes (class);
635 current_class = save_current_class;
636 input_filename = save_input_filename;
637 current_jcf = save_current_jcf;
641 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
642 called from the parser, otherwise it's a RECORD_TYPE node. If
643 VERBOSE is 1, print error message on failure to load a class. */
645 /* Replace calls to load_class by having callers call read_class directly
646 - and then perhaps rename read_class to load_class. FIXME */
649 load_class (class_or_name, verbose)
655 /* class_or_name can be the name of the class we want to load */
656 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
657 name = class_or_name;
658 /* In some cases, it's a dependency that we process earlier that
660 else if (TREE_CODE (class_or_name) == TREE_LIST)
661 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
662 /* Or it's a type in the making */
664 name = DECL_NAME (TYPE_NAME (class_or_name));
666 if (read_class (name) == 0 && verbose)
667 error ("Cannot find file for class %s.", IDENTIFIER_POINTER (name));
670 /* Parse the .class file JCF. */
678 if (jcf_parse_preamble (jcf) != 0)
679 fatal_error ("not a valid Java .class file");
680 code = jcf_parse_constant_pool (jcf);
682 fatal_error ("error while parsing constant pool");
683 code = verify_constant_pool (jcf);
685 fatal_error ("error in constant pool entry #%d\n", code);
687 jcf_parse_class (jcf);
688 if (main_class == NULL_TREE)
689 main_class = current_class;
690 if (! quiet_flag && TYPE_NAME (current_class))
691 fprintf (stderr, " %s %s",
692 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
693 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
694 if (CLASS_PARSED_P (current_class))
696 /* FIXME - where was first time */
697 fatal_error ("reading class %s for the second time from %s",
698 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
701 CLASS_PARSED_P (current_class) = 1;
703 for (i = 1; i < JPOOL_SIZE(jcf); i++)
705 switch (JPOOL_TAG (jcf, i))
708 get_class_constant (jcf, i);
713 code = jcf_parse_fields (jcf);
715 fatal_error ("error while parsing fields");
716 code = jcf_parse_methods (jcf);
718 fatal_error ("error while parsing methods");
719 code = jcf_parse_final_attributes (jcf);
721 fatal_error ("error while parsing final attributes");
723 /* The fields of class_type_node are already in correct order. */
724 if (current_class != class_type_node && current_class != object_type_node)
725 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
727 if (current_class == object_type_node)
729 layout_class_methods (object_type_node);
730 /* If we don't have the right archive, emit a verbose warning.
731 If we're generating bytecode, emit the warning only if
732 -fforce-classes-archive-check was specified. */
734 && (!flag_emit_class_files || flag_force_classes_archive_check))
735 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 incorrect set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath.", jcf->filename);
738 all_class_list = tree_cons (NULL_TREE,
739 TYPE_NAME (current_class), all_class_list );
742 /* If we came across inner classes, load them now. */
744 load_inner_classes (cur_class)
748 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
749 current = TREE_CHAIN (current))
751 tree name = DECL_NAME (TREE_PURPOSE (current));
752 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
753 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
754 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
755 load_class (name, 1);
760 init_outgoing_cpool ()
762 current_constant_pool_data_ref = NULL_TREE;
763 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
764 memset (outgoing_cpool, 0, sizeof (struct CPool));
771 const char *save_input_filename = input_filename;
772 int save_lineno = lineno;
774 java_layout_seen_class_methods ();
776 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
778 (*debug_hooks->start_source_file) (lineno, input_filename);
779 init_outgoing_cpool ();
781 /* Currently we always have to emit calls to _Jv_InitClass when
782 compiling from class files. */
783 always_initialize_class_p = 1;
785 for ( method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
786 method != NULL_TREE; method = TREE_CHAIN (method))
788 JCF *jcf = current_jcf;
790 if (METHOD_ABSTRACT (method))
793 if (METHOD_NATIVE (method))
800 /* We need to compute the DECL_MAX_LOCALS. We need to take
801 the wide types into account too. */
802 for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
803 arg != end_params_node;
804 arg = TREE_CHAIN (arg), decl_max_locals += 1)
806 if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
807 decl_max_locals += 1;
809 DECL_MAX_LOCALS (method) = decl_max_locals;
810 start_java_method (method);
811 give_name_to_locals (jcf);
812 expand_expr_stmt (build_jni_stub (method));
817 if (DECL_CODE_OFFSET (method) == 0)
819 error ("missing Code attribute");
824 if (DECL_LINENUMBERS_OFFSET (method))
827 register unsigned char *ptr;
828 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
829 linenumber_count = i = JCF_readu2 (jcf);
830 linenumber_table = ptr = jcf->read_ptr;
832 for (ptr += 2; --i >= 0; ptr += 4)
834 int line = GET_u2 (ptr);
835 /* Set initial lineno lineno to smallest linenumber.
836 * Needs to be set before init_function_start. */
837 if (lineno == 0 || line < lineno)
843 linenumber_table = NULL;
844 linenumber_count = 0;
847 start_java_method (method);
849 note_instructions (jcf, method);
851 give_name_to_locals (jcf);
853 /* Actually generate code. */
854 expand_byte_code (jcf, method);
859 if (flag_emit_class_files)
860 write_classfile (current_class);
864 (*debug_hooks->end_source_file) (save_lineno);
865 input_filename = save_input_filename;
866 lineno = save_lineno;
869 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
872 parse_source_file_1 (file, finput)
876 int save_error_count = java_error_count;
877 /* Mark the file as parsed */
878 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
880 jcf_dependency_add_file (input_filename, 0);
882 lang_init_source (1); /* Error msgs have no method prototypes */
884 /* There's no point in trying to find the current encoding unless we
885 are going to do something intelligent with it -- hence the test
888 #ifdef HAVE_NL_LANGINFO
889 setlocale (LC_CTYPE, "");
890 if (current_encoding == NULL)
891 current_encoding = nl_langinfo (CODESET);
892 #endif /* HAVE_NL_LANGINFO */
893 #endif /* HAVE_ICONV */
894 if (current_encoding == NULL || *current_encoding == '\0')
895 current_encoding = DEFAULT_ENCODING;
897 /* Initialize the parser */
898 java_init_lex (finput, current_encoding);
899 java_parse_abort_on_error ();
901 java_parse (); /* Parse and build partial tree nodes. */
902 java_parse_abort_on_error ();
905 /* Process a parsed source file, resolving names etc. */
908 parse_source_file_2 ()
910 int save_error_count = java_error_count;
911 java_complete_class (); /* Parse unsatisfied class decl. */
912 java_parse_abort_on_error ();
913 java_check_circular_reference (); /* Check on circular references */
914 java_parse_abort_on_error ();
915 java_fix_constructors (); /* Fix the constructors */
916 java_parse_abort_on_error ();
917 java_reorder_fields (); /* Reorder the fields */
921 predefined_filename_p (node)
925 for (i = 0; i < PREDEF_FILENAMES_SIZE; i++)
926 if (predef_filenames [i] == node)
934 int filename_count = 0;
939 if (flag_filelist_file)
942 finput = fopen (input_filename, "r");
944 fatal_io_error ("can't open %s", input_filename);
945 list = xmalloc(avail);
953 avail = 2 * (count + avail);
954 list = xrealloc (list, avail);
956 avail = avail - count;
958 /* Subtract to to guarantee space for final '\0'. */
959 count = fread (next, 1, avail - 1, finput);
963 fatal_io_error ("error closing %s", input_filename);
974 list = xstrdup (input_filename);
978 for (next = list; ; )
981 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
982 || ch == '&' /* FIXME */)
1010 int len = strlen (list);
1012 if (*list != '/' && filename_count > 0)
1013 obstack_grow (&temporary_obstack, "./", 2);
1015 obstack_grow0 (&temporary_obstack, list, len);
1016 value = obstack_finish (&temporary_obstack);
1020 /* Exclude file that we see twice on the command line. For
1021 all files except {Class,Error,Object,RuntimeException,String,
1022 Throwable}.java we can rely on maybe_get_identifier. For
1023 these files, we need to do a linear search of
1024 current_file_list. This search happens only for these
1025 files, presumably only when we're recompiling libgcj. */
1027 if ((id = maybe_get_identifier (value)))
1029 if (predefined_filename_p (id))
1032 for (c = current_file_list; c; c = TREE_CHAIN (c))
1033 if (TREE_VALUE (c) == id)
1042 const char *saved_input_filename = input_filename;
1043 input_filename = value;
1044 warning ("source file seen twice on command line and will be compiled only once.");
1045 input_filename = saved_input_filename;
1049 BUILD_FILENAME_IDENTIFIER_NODE (node, value);
1050 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1051 current_file_list = tree_cons (NULL_TREE, node,
1059 if (filename_count == 0)
1060 warning ("no input file specified");
1062 current_jcf = main_jcf;
1063 current_file_list = nreverse (current_file_list);
1064 for (node = current_file_list; node; node = TREE_CHAIN (node))
1066 unsigned char magic_string[4];
1068 tree name = TREE_VALUE (node);
1070 /* Skip already parsed files */
1071 if (HAS_BEEN_ALREADY_PARSED_P (name))
1074 /* Close previous descriptor, if any */
1075 if (finput && fclose (finput))
1076 fatal_io_error ("can't close input file %s", main_input_filename);
1078 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1080 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name));
1082 #ifdef IO_BUFFER_SIZE
1083 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
1084 _IOFBF, IO_BUFFER_SIZE);
1086 input_filename = IDENTIFIER_POINTER (name);
1088 /* Figure what kind of file we're dealing with */
1089 if (fread (magic_string, 1, 4, finput) != 4)
1090 fatal_io_error ("Premature end of input file %s",
1091 IDENTIFIER_POINTER (name));
1092 fseek (finput, 0L, SEEK_SET);
1093 magic = GET_u4 (magic_string);
1094 if (magic == 0xcafebabe)
1096 CLASS_FILE_P (node) = 1;
1097 current_jcf = ALLOC (sizeof (JCF));
1098 JCF_ZERO (current_jcf);
1099 current_jcf->read_state = finput;
1100 current_jcf->filbuf = jcf_filbuf_from_stdio;
1101 jcf_parse (current_jcf);
1102 TYPE_JCF (current_class) = current_jcf;
1103 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1104 TREE_PURPOSE (node) = current_class;
1106 else if (magic == (JCF_u4)ZIPMAGIC)
1108 ZIP_FILE_P (node) = 1;
1109 JCF_ZERO (main_jcf);
1110 main_jcf->read_state = finput;
1111 main_jcf->filbuf = jcf_filbuf_from_stdio;
1112 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1113 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1114 localToFile = SeenZipFiles;
1115 /* Register all the class defined there. */
1116 process_zip_dir (main_jcf->read_state);
1117 parse_zip_file_entries ();
1120 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1125 JAVA_FILE_P (node) = 1;
1126 java_push_parser_context ();
1127 java_parser_context_save_global ();
1128 parse_source_file_1 (name, finput);
1129 java_parser_context_restore_global ();
1130 java_pop_parser_context (1);
1134 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1136 input_filename = ctxp->filename;
1137 parse_source_file_2 ();
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)
1156 emit_register_classes ();
1160 /* Process all class entries found in the zip file. */
1162 parse_zip_file_entries (void)
1164 struct ZipDirectory *zdir;
1167 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1168 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1172 /* We don't need to consider those files. */
1173 if (!zdir->size || !zdir->filename_offset)
1176 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
1177 current_jcf = TYPE_JCF (class);
1178 current_class = class;
1180 if ( !CLASS_LOADED_P (class))
1182 if (! CLASS_PARSED_P (class))
1184 read_zip_member(current_jcf, zdir, localToFile);
1185 jcf_parse (current_jcf);
1187 layout_class (current_class);
1188 load_inner_classes (current_class);
1191 if (TYPE_SIZE (current_class) != error_mark_node)
1193 input_filename = current_jcf->filename;
1194 parse_class_file ();
1195 FREE (current_jcf->buffer); /* No longer necessary */
1196 /* Note: there is a way to free this buffer right after a
1197 class seen in a zip file has been parsed. The idea is the
1198 set its jcf in such a way that buffer will be reallocated
1199 the time the code for the class will be generated. FIXME. */
1204 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1205 jcf up for further processing and link it to the created class. */
1208 process_zip_dir (FILE *finput)
1213 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1214 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1216 char *class_name, *file_name, *class_name_in_zip_dir;
1221 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1223 /* We choose to not to process entries with a zero size or entries
1224 not bearing the .class extention. */
1225 if (!zdir->size || !zdir->filename_offset ||
1226 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
1229 /* So it will be skipped in parse_zip_file_entries */
1234 class_name = ALLOC (zdir->filename_length+1-6);
1235 file_name = ALLOC (zdir->filename_length+1);
1236 jcf = ALLOC (sizeof (JCF));
1239 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
1240 class_name [zdir->filename_length-6] = '\0';
1241 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1242 file_name [zdir->filename_length] = '\0';
1244 for (j=0; class_name[j]; j++)
1245 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
1247 /* Yes, we write back the true class name into the zip directory. */
1248 strcpy (class_name_in_zip_dir, class_name);
1249 zdir->filename_length = j;
1250 class = lookup_class (get_identifier (class_name));
1252 jcf->read_state = finput;
1253 jcf->filbuf = jcf_filbuf_from_stdio;
1254 jcf->java_source = 0;
1255 jcf->classname = class_name;
1256 jcf->filename = file_name;
1259 TYPE_JCF (class) = jcf;
1263 /* Initialization. */
1268 /* Register roots with the garbage collector. */
1269 ggc_add_tree_root (parse_roots, sizeof (parse_roots) / sizeof(tree));
1271 ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf);