1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000 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"
43 #ifdef HAVE_NL_LANGINFO
47 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
48 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
49 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
50 #define JPOOL_UTF_DATA(JCF, INDEX) \
51 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
52 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
54 unsigned char save; unsigned char *text; \
55 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
56 text = (JCF)->read_ptr; \
57 save = text[LENGTH]; \
59 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
60 text[LENGTH] = save; \
61 JCF_SKIP (JCF, LENGTH); } while (0)
65 extern struct obstack *saveable_obstack;
66 extern struct obstack temporary_obstack;
67 extern struct obstack permanent_obstack;
69 /* Set to non-zero value in order to emit class initilization code
70 before static field references. */
71 extern int always_initialize_class_p;
73 /* The FIELD_DECL for the current field. */
74 static tree current_field = NULL_TREE;
76 /* The METHOD_DECL for the current method. */
77 static tree current_method = NULL_TREE;
79 /* A list of file names. */
80 static tree current_file_list = NULL_TREE;
82 /* The Java .class file that provides main_class; the main input file. */
83 static struct JCF main_jcf[1];
85 /* Declarations of some functions used here. */
86 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
87 static void parse_zip_file_entries PARAMS ((void));
88 static void process_zip_dir PARAMS ((FILE *));
89 static void parse_source_file PARAMS ((tree, FILE *));
90 static void jcf_parse_source PARAMS ((void));
91 static int jcf_figure_file_type PARAMS ((JCF *));
92 static int find_in_current_zip PARAMS ((const char *, struct JCF **));
93 static void parse_class_file PARAMS ((void));
94 static void set_source_filename PARAMS ((JCF *, int));
95 static int predefined_filename_p PARAMS ((tree));
97 /* Handle "SourceFile" attribute. */
100 set_source_filename (jcf, index)
104 tree sfname_id = get_name_constant (jcf, index);
105 const char *sfname = IDENTIFIER_POINTER (sfname_id);
106 if (input_filename != NULL)
108 int old_len = strlen (input_filename);
109 int new_len = IDENTIFIER_LENGTH (sfname_id);
110 /* Use the current input_filename (derived from the class name)
111 if it has a directory prefix, but otherwise matches sfname. */
112 if (old_len > new_len
113 && strcmp (sfname, input_filename + old_len - new_len) == 0
114 && (input_filename[old_len - new_len - 1] == '/'
115 || input_filename[old_len - new_len - 1] == '\\'))
118 input_filename = sfname;
119 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
120 if (current_class == main_class) main_input_filename = input_filename;
123 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
125 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
126 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
127 current_class = give_name_to_class (jcf, THIS); \
128 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
130 #define HANDLE_CLASS_INTERFACE(INDEX) \
131 add_interface (current_class, get_class_constant (jcf, INDEX))
133 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
134 { int sig_index = SIGNATURE; \
135 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
136 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
137 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); }
139 #define HANDLE_END_FIELDS() \
140 (current_field = NULL_TREE)
142 #define HANDLE_CONSTANTVALUE(INDEX) \
143 { tree constant; int index = INDEX; \
144 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
145 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
146 constant = build_utf8_ref (name); \
149 constant = get_constant (jcf, index); \
150 set_constant_value (current_field, constant); }
152 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
153 (current_method = add_method (current_class, ACCESS_FLAGS, \
154 get_name_constant (jcf, NAME), \
155 get_name_constant (jcf, SIGNATURE)), \
156 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
157 DECL_LINENUMBERS_OFFSET (current_method) = 0)
159 #define HANDLE_END_METHODS() \
160 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
161 if (handle_type != current_class) layout_type (handle_type); }
163 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
164 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
165 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
166 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
167 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
169 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
171 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
172 JCF_SKIP (jcf, n * 10); }
174 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
176 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
177 JCF_SKIP (jcf, n * 4); }
179 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
182 tree list = DECL_FUNCTION_THROWS (current_method); \
185 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
186 list = tree_cons (NULL_TREE, thrown_class, list); \
188 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
191 /* Link seen inner classes to their outer context and register the
192 inner class to its outer context. They will be later loaded. */
193 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
198 tree class = get_class_constant (jcf, JCF_readu2 (jcf)); \
199 tree decl = TYPE_NAME (class); \
200 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl)) \
202 tree outer = TYPE_NAME (get_class_constant (jcf, \
203 JCF_readu2 (jcf))); \
204 tree alias = get_name_constant (jcf, JCF_readu2 (jcf)); \
206 DECL_CONTEXT (decl) = outer; \
207 DECL_INNER_CLASS_LIST (outer) = \
208 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer)); \
209 CLASS_COMPLETE_P (decl) = 1; \
216 #include "jcf-reader.c"
221 parse_signature (jcf, sig_index)
225 if (sig_index <= 0 || sig_index >= JPOOL_SIZE(jcf)
226 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
227 fatal ("invalid field/method signature");
230 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
231 JPOOL_UTF_LENGTH (jcf, sig_index));
238 /* Make identifier nodes long enough for the language-specific slots. */
239 set_identifier_size (sizeof (struct lang_identifier));
250 get_constant (jcf, index)
256 if (index <= 0 || index >= JPOOL_SIZE(jcf))
258 tag = JPOOL_TAG (jcf, index);
259 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
260 return (tree) jcf->cpool.data[index];
263 case CONSTANT_Integer:
265 jint num = JPOOL_INT(jcf, index);
266 value = build_int_2 (num, num < 0 ? -1 : 0);
267 TREE_TYPE (value) = int_type_node;
272 jint num = JPOOL_INT (jcf, index);
273 HOST_WIDE_INT lo, hi;
274 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
275 num = JPOOL_INT (jcf, index+1) & 0xffffffff;
276 add_double (lo, hi, num, 0, &lo, &hi);
277 value = build_int_2 (lo, hi);
278 TREE_TYPE (value) = long_type_node;
279 force_fit_type (value, 0);
282 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
285 jint num = JPOOL_INT(jcf, index);
287 #ifdef REAL_ARITHMETIC
288 d = REAL_VALUE_FROM_TARGET_SINGLE (num);
290 union { float f; jint i; } u;
294 value = build_real (float_type_node, d);
297 case CONSTANT_Double:
299 HOST_WIDE_INT num[2];
301 HOST_WIDE_INT lo, hi;
302 num[0] = JPOOL_INT (jcf, index);
303 lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
304 num[0] = JPOOL_INT (jcf, index+1);
305 add_double (lo, hi, num[0], 0, &lo, &hi);
306 if (FLOAT_WORDS_BIG_ENDIAN)
316 #ifdef REAL_ARITHMETIC
317 d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
320 union { double d; jint i[2]; } u;
321 u.i[0] = (jint) num[0];
322 u.i[1] = (jint) num[1];
326 value = build_real (double_type_node, d);
329 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
330 case CONSTANT_String:
332 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
333 const char *utf8_ptr = IDENTIFIER_POINTER (name);
334 int utf8_len = IDENTIFIER_LENGTH (name);
335 unsigned char *str_ptr;
337 const unsigned char *utf8;
340 /* Count the number of Unicode characters in the string,
341 while checking for a malformed Utf8 string. */
342 utf8 = (const unsigned char *) utf8_ptr;
347 int char_len = UT8_CHAR_LENGTH (*utf8);
348 if (char_len < 0 || char_len > 3 || char_len > i)
349 fatal ("bad string constant");
355 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
356 into the new space. */
357 str_ptr = (unsigned char *) alloca (2 * str_len);
359 utf8 = (const unsigned char *)utf8_ptr;
361 for (i = 0; i < str_len; i++)
364 int char_len = UT8_CHAR_LENGTH (*utf8);
368 char_value = *utf8++;
371 char_value = *utf8++ & 0x1F;
372 char_value = (char_value << 6) | (*utf8++ & 0x3F);
375 char_value = *utf8++ & 0x0F;
376 char_value = (char_value << 6) | (*utf8++ & 0x3F);
377 char_value = (char_value << 6) | (*utf8++ & 0x3F);
382 if (BYTES_BIG_ENDIAN)
384 *str++ = char_value >> 8;
385 *str++ = char_value & 0xFF;
389 *str++ = char_value & 0xFF;
390 *str++ = char_value >> 8;
393 value = build_string (str - str_ptr, str_ptr);
394 TREE_TYPE (value) = build_pointer_type (string_type_node);
400 JPOOL_TAG(jcf, index) = tag | CONSTANT_ResolvedFlag;
401 jcf->cpool.data [index] = (jword) value;
404 fatal ("bad value constant type %d, index %d",
405 JPOOL_TAG( jcf, index ), index);
409 get_name_constant (jcf, index)
413 tree name = get_constant (jcf, index);
414 if (TREE_CODE (name) != IDENTIFIER_NODE)
415 fatal ("bad nameandtype index %d", index);
420 give_name_to_class (jcf, i)
424 if (i <= 0 || i >= JPOOL_SIZE(jcf)
425 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
426 fatal ("bad class index %d", i);
430 int j = JPOOL_USHORT1 (jcf, i);
431 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
432 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
433 JPOOL_UTF_LENGTH (jcf, j));
434 this_class = lookup_class (class_name);
435 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
437 if (main_input_filename == NULL && jcf == main_jcf)
438 main_input_filename = input_filename;
440 jcf->cpool.data[i] = (jword) this_class;
441 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
446 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
449 get_class_constant (JCF *jcf , int i)
452 if (i <= 0 || i >= JPOOL_SIZE(jcf)
453 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
454 fatal ("bad class index %d", i);
456 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
458 int name_index = JPOOL_USHORT1 (jcf, i);
459 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
460 const char *name = JPOOL_UTF_DATA (jcf, name_index);
461 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
462 if (name[0] == '[') /* Handle array "classes". */
463 type = TREE_TYPE (parse_signature_string (name, nlength));
466 tree cname = unmangle_classname (name, nlength);
467 type = lookup_class (cname);
469 jcf->cpool.data[i] = (jword) type;
470 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
473 type = (tree) jcf->cpool.data[i];
477 /* Read a class with the fully qualified-name NAME.
478 Return 1 iff we read the requested file.
479 (It is still possible we failed if the file did not
480 define the class it is supposed to.) */
487 tree save_current_class = current_class;
488 const char *save_input_filename = input_filename;
489 JCF *save_current_jcf = current_jcf;
491 if (current_jcf->read_state)
492 saved_pos = ftell (current_jcf->read_state);
494 /* Search in current zip first. */
495 if (find_in_current_zip (IDENTIFIER_POINTER (name), &jcf) == 0)
497 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
502 this_jcf.seen_in_zip = 0;
503 current_jcf = &this_jcf;
509 if (current_jcf->java_source)
512 java_parser_context_save_global ();
513 java_push_parser_context ();
514 input_filename = current_jcf->filename;
515 jcf_parse (current_jcf);
516 java_pop_parser_context (0);
517 java_parser_context_restore_global ();
520 if (!current_jcf->seen_in_zip)
521 JCF_FINISH (current_jcf);
523 current_class = save_current_class;
524 input_filename = save_input_filename;
525 current_jcf = save_current_jcf;
526 if (current_jcf->read_state)
527 fseek (current_jcf->read_state, saved_pos, SEEK_SET);
531 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
532 called from the parser, otherwise it's a RECORD_TYPE node. If
533 VERBOSE is 1, print error message on failure to load a class. */
535 /* Replace calls to load_class by having callers call read_class directly
536 - and then perhaps rename read_class to load_class. FIXME */
539 load_class (class_or_name, verbose)
545 /* class_or_name can be the name of the class we want to load */
546 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
547 name = class_or_name;
548 /* In some cases, it's a dependency that we process earlier that
550 else if (TREE_CODE (class_or_name) == TREE_LIST)
551 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
552 /* Or it's a type in the making */
554 name = DECL_NAME (TYPE_NAME (class_or_name));
556 if (read_class (name) == 0 && verbose)
557 fatal ("Cannot find file for class %s.", IDENTIFIER_POINTER (name));
560 /* Parse a source file when JCF refers to a source file. */
568 java_parser_context_save_global ();
569 java_push_parser_context ();
570 BUILD_FILENAME_IDENTIFIER_NODE (file, current_jcf->filename);
571 EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
572 input_filename = ggc_strdup (current_jcf->filename);
573 current_class = NULL_TREE;
574 current_function_decl = NULL_TREE;
575 if (!HAS_BEEN_ALREADY_PARSED_P (file))
577 if (!(finput = fopen (input_filename, "r")))
578 fatal ("input file `%s' just disappeared - jcf_parse_source",
580 parse_source_file (file, finput);
582 fatal ("can't close input file `%s' stream - jcf_parse_source",
585 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file));
586 java_parser_context_restore_global ();
589 /* Parse the .class file JCF. */
598 if (jcf_parse_preamble (jcf) != 0)
599 fatal ("Not a valid Java .class file.\n");
600 code = jcf_parse_constant_pool (jcf);
602 fatal ("error while parsing constant pool");
603 code = verify_constant_pool (jcf);
605 fatal ("error in constant pool entry #%d\n", code);
607 jcf_parse_class (jcf);
608 if (main_class == NULL_TREE)
609 main_class = current_class;
610 if (! quiet_flag && TYPE_NAME (current_class))
611 fprintf (stderr, " %s %s",
612 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
613 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
614 if (CLASS_LOADED_P (current_class))
616 CLASS_LOADED_P (current_class) = 1;
618 for (i = 1; i < JPOOL_SIZE(jcf); i++)
620 switch (JPOOL_TAG (jcf, i))
623 get_class_constant (jcf, i);
628 code = jcf_parse_fields (jcf);
630 fatal ("error while parsing fields");
631 code = jcf_parse_methods (jcf);
633 fatal ("error while parsing methods");
634 code = jcf_parse_final_attributes (jcf);
636 fatal ("error while parsing final attributes");
638 /* The fields of class_type_node are already in correct order. */
639 if (current_class != class_type_node && current_class != object_type_node)
640 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
642 layout_class (current_class);
643 if (current_class == object_type_node)
644 layout_class_methods (object_type_node);
646 all_class_list = tree_cons (NULL_TREE,
647 TYPE_NAME (current_class), all_class_list );
649 /* And if we came accross inner classes, load them now. */
650 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (current_class)); current;
651 current = TREE_CHAIN (current))
652 load_class (DECL_NAME (TREE_PURPOSE (current)), 1);
656 init_outgoing_cpool ()
658 current_constant_pool_data_ref = NULL_TREE;
659 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
660 memset (outgoing_cpool, 0, sizeof (struct CPool));
667 const char *save_input_filename = input_filename;
668 int save_lineno = lineno;
670 java_layout_seen_class_methods ();
672 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
674 debug_start_source_file (input_filename);
675 init_outgoing_cpool ();
677 /* Currently we always have to emit calls to _Jv_InitClass when
678 compiling from class files. */
679 always_initialize_class_p = 1;
681 for ( method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
682 method != NULL_TREE; method = TREE_CHAIN (method))
684 JCF *jcf = current_jcf;
686 if (METHOD_ABSTRACT (method))
689 if (METHOD_NATIVE (method))
693 DECL_MAX_LOCALS (method)
694 = list_length (TYPE_ARG_TYPES (TREE_TYPE (method)));
695 start_java_method (method);
696 give_name_to_locals (jcf);
697 expand_expr_stmt (build_jni_stub (method));
702 if (DECL_CODE_OFFSET (method) == 0)
704 error ("missing Code attribute");
709 if (DECL_LINENUMBERS_OFFSET (method))
712 register unsigned char *ptr;
713 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
714 linenumber_count = i = JCF_readu2 (jcf);
715 linenumber_table = ptr = jcf->read_ptr;
717 for (ptr += 2; --i >= 0; ptr += 4)
719 int line = GET_u2 (ptr);
720 /* Set initial lineno lineno to smallest linenumber.
721 * Needs to be set before init_function_start. */
722 if (lineno == 0 || line < lineno)
728 linenumber_table = NULL;
729 linenumber_count = 0;
732 start_java_method (method);
734 note_instructions (jcf, method);
736 give_name_to_locals (jcf);
738 /* Actually generate code. */
739 expand_byte_code (jcf, method);
744 if (flag_emit_class_files)
745 write_classfile (current_class);
749 debug_end_source_file (save_lineno);
750 input_filename = save_input_filename;
751 lineno = save_lineno;
754 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
757 parse_source_file (file, finput)
761 int save_error_count = java_error_count;
762 /* Mark the file as parsed */
763 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
765 jcf_dependency_add_file (input_filename, 0);
767 lang_init_source (1); /* Error msgs have no method prototypes */
769 /* There's no point in trying to find the current encoding unless we
770 are going to do something intelligent with it -- hence the test
773 #ifdef HAVE_NL_LANGINFO
774 setlocale (LC_CTYPE, "");
775 if (current_encoding == NULL)
776 current_encoding = nl_langinfo (CODESET);
777 #endif /* HAVE_NL_LANGINFO */
778 #endif /* HAVE_ICONV */
779 if (current_encoding == NULL || *current_encoding == '\0')
780 current_encoding = DEFAULT_ENCODING;
782 /* Initialize the parser */
783 java_init_lex (finput, current_encoding);
784 java_parse_abort_on_error ();
786 java_parse (); /* Parse and build partial tree nodes. */
787 java_parse_abort_on_error ();
788 java_complete_class (); /* Parse unsatisfied class decl. */
789 java_parse_abort_on_error ();
790 java_check_circular_reference (); /* Check on circular references */
791 java_parse_abort_on_error ();
792 java_fix_constructors (); /* Fix the constructors */
793 java_parse_abort_on_error ();
794 java_reorder_fields (); /* Reorder the fields */
798 predefined_filename_p (node)
802 for (i = 0; i < PREDEF_FILENAMES_SIZE; i++)
803 if (predef_filenames [i] == node)
811 int several_files = 0;
812 char *list = xstrdup (input_filename), *next;
818 next = strchr (list, '&');
831 int len = strlen (list);
833 if (*list != '/' && several_files)
834 obstack_grow (&temporary_obstack, "./", 2);
836 obstack_grow0 (&temporary_obstack, list, len);
837 value = obstack_finish (&temporary_obstack);
839 /* Exclude file that we see twice on the command line. For
840 all files except {Class,Error,Object,RuntimeException,String,
841 Throwable}.java we can rely on maybe_get_identifier. For
842 these files, we need to do a linear search of
843 current_file_list. This search happens only for these
844 files, presumably only when we're recompiling libgcj. */
846 if ((id = maybe_get_identifier (value)))
848 if (predefined_filename_p (id))
851 for (c = current_file_list; c; c = TREE_CHAIN (c))
852 if (TREE_VALUE (c) == id)
861 const char *saved_input_filename = input_filename;
862 input_filename = value;
863 warning ("source file seen twice on command line and will be compiled only once.");
864 input_filename = saved_input_filename;
868 BUILD_FILENAME_IDENTIFIER_NODE (node, value);
869 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
870 current_file_list = tree_cons (NULL_TREE, node,
878 current_jcf = main_jcf;
879 current_file_list = nreverse (current_file_list);
880 for (node = current_file_list; node; node = TREE_CHAIN (node))
882 tree name = TREE_VALUE (node);
884 /* Skip already parsed files */
885 if (HAS_BEEN_ALREADY_PARSED_P (name))
888 /* Close previous descriptor, if any */
889 if (main_jcf->read_state && fclose (main_jcf->read_state))
890 fatal ("failed to close input file `%s' - yyparse",
891 (main_jcf->filename ? main_jcf->filename : "<unknown>"));
893 /* Set jcf up and open a new file */
895 main_jcf->read_state = fopen (IDENTIFIER_POINTER (name), "rb");
896 if (main_jcf->read_state == NULL)
897 pfatal_with_name (IDENTIFIER_POINTER (name));
899 /* Set new input_filename and finput */
900 finput = main_jcf->read_state;
901 #ifdef IO_BUFFER_SIZE
902 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
903 _IOFBF, IO_BUFFER_SIZE);
905 input_filename = IDENTIFIER_POINTER (name);
906 main_jcf->filbuf = jcf_filbuf_from_stdio;
908 switch (jcf_figure_file_type (current_jcf))
911 parse_zip_file_entries ();
914 jcf_parse (current_jcf);
918 java_push_parser_context ();
919 java_parser_context_save_global ();
920 parse_source_file (name, finput);
921 java_parser_context_restore_global ();
922 java_pop_parser_context (1);
927 java_expand_classes ();
928 if (!java_report_errors () && !flag_syntax_only)
929 emit_register_classes ();
933 static struct ZipFileCache *localToFile;
935 /* Process all class entries found in the zip file. */
937 parse_zip_file_entries (void)
939 struct ZipDirectory *zdir;
942 for (i = 0, zdir = (ZipDirectory *)localToFile->z.central_directory;
943 i < localToFile->z.count; i++, zdir = ZIPDIR_NEXT (zdir))
947 /* We don't need to consider those files. */
948 if (!zdir->size || !zdir->filename_offset)
951 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
952 current_jcf = TYPE_JCF (class);
953 current_class = class;
955 if ( !CLASS_LOADED_P (class))
957 fseek (current_jcf->read_state, current_jcf->zip_offset, SEEK_SET);
958 jcf_parse (current_jcf);
961 if (TYPE_SIZE (current_class) != error_mark_node)
963 input_filename = current_jcf->filename;
965 FREE (current_jcf->buffer); /* No longer necessary */
966 /* Note: there is a way to free this buffer right after a
967 class seen in a zip file has been parsed. The idea is the
968 set its jcf in such a way that buffer will be reallocated
969 the time the code for the class will be generated. FIXME. */
974 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
975 jcf up for further processing and link it to the created class. */
978 process_zip_dir (FILE *finput)
983 for (i = 0, zdir = (ZipDirectory *)localToFile->z.central_directory;
984 i < localToFile->z.count; i++, zdir = ZIPDIR_NEXT (zdir))
986 char *class_name, *file_name, *class_name_in_zip_dir;
991 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
993 /* We choose to not to process entries with a zero size or entries
994 not bearing the .class extention. */
995 if (!zdir->size || !zdir->filename_offset ||
996 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
999 /* So it will be skipped in parse_zip_file_entries */
1004 class_name = ALLOC (zdir->filename_length+1-6);
1005 file_name = ALLOC (zdir->filename_length+1);
1006 jcf = ALLOC (sizeof (JCF));
1009 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
1010 class_name [zdir->filename_length-6] = '\0';
1011 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1012 file_name [zdir->filename_length] = '\0';
1014 for (j=0; class_name[j]; j++)
1015 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
1017 /* Yes, we write back the true class name into the zip directory. */
1018 strcpy (class_name_in_zip_dir, class_name);
1019 zdir->filename_length = j;
1020 class = lookup_class (get_identifier (class_name));
1022 jcf->read_state = finput;
1023 jcf->filbuf = jcf_filbuf_from_stdio;
1024 jcf->seen_in_zip = 1;
1025 jcf->java_source = 0;
1026 jcf->zip_offset = zdir->filestart;
1027 jcf->classname = class_name;
1028 jcf->filename = file_name;
1030 TYPE_JCF (class) = jcf;
1034 /* Lookup class NAME and figure whether is a class already found in the current
1037 DEFUN(find_in_current_zip, (name, length, jcf),
1038 const char *name AND JCF **jcf)
1041 tree class_name = maybe_get_identifier (name), class, icv;
1046 if (!(icv = IDENTIFIER_CLASS_VALUE (class_name)))
1049 class = TREE_TYPE (icv);
1051 /* Doesn't have jcf specific info ? It's not ours */
1052 if (!TYPE_JCF (class))
1055 *jcf = local_jcf = TYPE_JCF (class);
1056 fseek (local_jcf->read_state, local_jcf->zip_offset, SEEK_SET);
1060 /* Figure what kind of file we're dealing with */
1062 DEFUN(jcf_figure_file_type, (jcf),
1065 unsigned char magic_string[4];
1068 if (fread (magic_string, 1, 4, jcf->read_state) != 4)
1069 jcf_unexpected_eof (jcf, 4);
1071 fseek (jcf->read_state, 0L, SEEK_SET);
1072 magic = GET_u4 (magic_string);
1074 if (magic == 0xcafebabe)
1077 /* FIXME: is it a system file? */
1078 if (magic == (JCF_u4)ZIPMAGIC
1079 && !open_in_zip (jcf, input_filename, NULL, 0))
1081 localToFile = ALLOC (sizeof (struct ZipFileCache));
1082 memcpy (localToFile, SeenZipFiles, sizeof (struct ZipFileCache));
1083 /* Register all the class defined there. */
1084 process_zip_dir (jcf->read_state);
1091 /* Initialization. */
1096 /* Register roots with the garbage collector. */
1097 ggc_add_tree_root (¤t_field, 1);
1098 ggc_add_tree_root (¤t_method, 1);
1099 ggc_add_tree_root (¤t_file_list, 1);