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"
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 static tree parse_roots
[3] = { NULL_TREE
, NULL_TREE
, NULL_TREE
};
75 /* The FIELD_DECL for the current field. */
76 #define current_field parse_roots[0]
78 /* The METHOD_DECL for the current method. */
79 #define current_method parse_roots[1]
81 /* A list of file names. */
82 #define current_file_list parse_roots[2]
84 /* The Java .class file that provides main_class; the main input file. */
85 static struct JCF main_jcf
[1];
87 /* Declarations of some functions used here. */
88 static void handle_innerclass_attribute
PARAMS ((int count
, JCF
*));
89 static tree give_name_to_class
PARAMS ((JCF
*jcf
, int index
));
90 static void parse_zip_file_entries
PARAMS ((void));
91 static void process_zip_dir
PARAMS ((FILE *));
92 static void parse_source_file
PARAMS ((tree
, FILE *));
93 static void jcf_parse_source
PARAMS ((void));
94 static int jcf_figure_file_type
PARAMS ((JCF
*));
95 static void parse_class_file
PARAMS ((void));
96 static void set_source_filename
PARAMS ((JCF
*, int));
97 static int predefined_filename_p
PARAMS ((tree
));
98 static void ggc_mark_jcf
PARAMS ((void**));
100 /* Mark (for garbage collection) all the tree nodes that are
101 referenced from JCF's constant pool table. */
107 JCF
*jcf
= *(JCF
**) elt
;
110 CPool
*cpool
= &jcf
->cpool
;
111 int size
= CPOOL_COUNT(cpool
);
113 for (index
= 1; index
< size
; index
++)
115 int tag
= JPOOL_TAG (jcf
, index
);
116 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
117 ggc_mark_tree ((tree
) cpool
->data
[index
]);
122 /* Handle "SourceFile" attribute. */
125 set_source_filename (jcf
, 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 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 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
189 if (handle_type != current_class) layout_type (handle_type); \
190 current_method = NULL_TREE; }
192 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
193 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
194 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
195 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
196 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
198 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
200 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
201 JCF_SKIP (jcf, n * 10); }
203 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
205 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
206 JCF_SKIP (jcf, n * 4); }
208 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
211 tree list = DECL_FUNCTION_THROWS (current_method); \
214 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
215 list = tree_cons (NULL_TREE, thrown_class, list); \
217 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
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 #include "jcf-reader.c"
240 parse_signature (jcf
, sig_index
)
244 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
245 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
248 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
249 JPOOL_UTF_LENGTH (jcf
, sig_index
));
255 /* Make identifier nodes long enough for the language-specific slots. */
256 set_identifier_size (sizeof (struct lang_identifier
));
267 get_constant (jcf
, index
)
273 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
275 tag
= JPOOL_TAG (jcf
, index
);
276 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
277 return (tree
) jcf
->cpool
.data
[index
];
280 case CONSTANT_Integer
:
282 jint num
= JPOOL_INT(jcf
, index
);
283 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
284 TREE_TYPE (value
) = int_type_node
;
289 jint num
= JPOOL_INT (jcf
, index
);
290 HOST_WIDE_INT lo
, hi
;
291 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
292 num
= JPOOL_INT (jcf
, index
+1) & 0xffffffff;
293 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
294 value
= build_int_2 (lo
, hi
);
295 TREE_TYPE (value
) = long_type_node
;
296 force_fit_type (value
, 0);
299 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
302 jint num
= JPOOL_INT(jcf
, index
);
304 #ifdef REAL_ARITHMETIC
305 d
= REAL_VALUE_FROM_TARGET_SINGLE (num
);
307 union { float f
; jint i
; } u
;
311 value
= build_real (float_type_node
, d
);
314 case CONSTANT_Double
:
316 HOST_WIDE_INT num
[2];
318 HOST_WIDE_INT lo
, hi
;
319 num
[0] = JPOOL_INT (jcf
, index
);
320 lshift_double (num
[0], 0, 32, 64, &lo
, &hi
, 0);
321 num
[0] = JPOOL_INT (jcf
, index
+1);
322 add_double (lo
, hi
, num
[0], 0, &lo
, &hi
);
323 if (FLOAT_WORDS_BIG_ENDIAN
)
333 #ifdef REAL_ARITHMETIC
334 d
= REAL_VALUE_FROM_TARGET_DOUBLE (num
);
337 union { double d
; jint i
[2]; } u
;
338 u
.i
[0] = (jint
) num
[0];
339 u
.i
[1] = (jint
) num
[1];
343 value
= build_real (double_type_node
, d
);
346 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
347 case CONSTANT_String
:
349 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
350 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
351 int utf8_len
= IDENTIFIER_LENGTH (name
);
352 unsigned char *str_ptr
;
354 const unsigned char *utf8
;
357 /* Count the number of Unicode characters in the string,
358 while checking for a malformed Utf8 string. */
359 utf8
= (const unsigned char *) utf8_ptr
;
364 int char_len
= UT8_CHAR_LENGTH (*utf8
);
365 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
366 fatal_error ("bad string constant");
373 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
374 into the new space. */
375 str_ptr
= (unsigned char *) alloca (2 * str_len
);
377 utf8
= (const unsigned char *)utf8_ptr
;
379 for (i
= 0; i
< str_len
; i
++)
382 int char_len
= UT8_CHAR_LENGTH (*utf8
);
386 char_value
= *utf8
++;
389 char_value
= *utf8
++ & 0x1F;
390 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
393 char_value
= *utf8
++ & 0x0F;
394 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
395 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
400 if (BYTES_BIG_ENDIAN
)
402 *str
++ = char_value
>> 8;
403 *str
++ = char_value
& 0xFF;
407 *str
++ = char_value
& 0xFF;
408 *str
++ = char_value
>> 8;
411 value
= build_string (str
- str_ptr
, str_ptr
);
412 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
418 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
419 jcf
->cpool
.data
[index
] = (jword
) value
;
422 internal_error ("bad value constant type %d, index %d",
423 JPOOL_TAG (jcf
, index
), index
);
427 get_name_constant (jcf
, index
)
431 tree name
= get_constant (jcf
, index
);
433 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
439 /* Handle reading innerclass attributes. If a non zero entry (denoting
440 a non anonymous entry) is found, We augment the inner class list of
441 the outer context with the newly resolved innerclass. */
444 handle_innerclass_attribute (count
, jcf
)
451 /* Read inner_class_info_index. This may be 0 */
452 int icii
= JCF_readu2 (jcf
);
453 /* Read outer_class_info_index. If the innerclasses attribute
454 entry isn't a member (like an inner class) the value is 0. */
455 int ocii
= JCF_readu2 (jcf
);
456 /* Read inner_name_index. If the class we're dealing with is
457 an annonymous class, it must be 0. */
458 int ini
= JCF_readu2 (jcf
);
459 /* If icii is 0, don't try to read the class. */
462 tree
class = get_class_constant (jcf
, icii
);
463 tree decl
= TYPE_NAME (class);
464 /* Skip reading further if ocii is null */
465 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
467 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
468 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
469 DECL_CONTEXT (decl
) = outer
;
470 DECL_INNER_CLASS_LIST (outer
) =
471 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
472 CLASS_COMPLETE_P (decl
) = 1;
480 give_name_to_class (jcf
, i
)
484 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
485 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
490 int j
= JPOOL_USHORT1 (jcf
, i
);
491 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
492 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
493 JPOOL_UTF_LENGTH (jcf
, j
));
494 this_class
= lookup_class (class_name
);
495 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
497 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
498 main_input_filename
= input_filename
;
500 jcf
->cpool
.data
[i
] = (jword
) this_class
;
501 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
506 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
509 get_class_constant (JCF
*jcf
, int i
)
512 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
513 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
516 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
518 int name_index
= JPOOL_USHORT1 (jcf
, i
);
519 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
520 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
521 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
523 if (name
[0] == '[') /* Handle array "classes". */
524 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
527 tree cname
= unmangle_classname (name
, nlength
);
528 type
= lookup_class (cname
);
530 jcf
->cpool
.data
[i
] = (jword
) type
;
531 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
534 type
= (tree
) jcf
->cpool
.data
[i
];
538 /* Read a class with the fully qualified-name NAME.
539 Return 1 iff we read the requested file.
540 (It is still possible we failed if the file did not
541 define the class it is supposed to.) */
549 tree save_current_class
= current_class
;
550 const char *save_input_filename
= input_filename
;
551 JCF
*save_current_jcf
= current_jcf
;
553 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
555 class = TREE_TYPE (icv
);
556 jcf
= TYPE_JCF (class);
563 this_jcf
.zipd
= NULL
;
565 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
572 if (current_jcf
->java_source
)
575 java_parser_context_save_global ();
576 java_push_parser_context ();
577 input_filename
= current_jcf
->filename
;
578 if (JCF_SEEN_IN_ZIP (current_jcf
))
579 read_zip_member(current_jcf
, current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
580 jcf_parse (current_jcf
);
581 java_pop_parser_context (0);
582 java_parser_context_restore_global ();
585 if (! JCF_SEEN_IN_ZIP (current_jcf
))
586 JCF_FINISH (current_jcf
);
588 current_class
= save_current_class
;
589 input_filename
= save_input_filename
;
590 current_jcf
= save_current_jcf
;
594 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
595 called from the parser, otherwise it's a RECORD_TYPE node. If
596 VERBOSE is 1, print error message on failure to load a class. */
598 /* Replace calls to load_class by having callers call read_class directly
599 - and then perhaps rename read_class to load_class. FIXME */
602 load_class (class_or_name
, verbose
)
608 /* class_or_name can be the name of the class we want to load */
609 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
610 name
= class_or_name
;
611 /* In some cases, it's a dependency that we process earlier that
613 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
614 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
615 /* Or it's a type in the making */
617 name
= DECL_NAME (TYPE_NAME (class_or_name
));
619 if (read_class (name
) == 0 && verbose
)
620 error ("Cannot find file for class %s.", IDENTIFIER_POINTER (name
));
623 /* Parse a source file when JCF refers to a source file. */
631 java_parser_context_save_global ();
632 java_push_parser_context ();
633 BUILD_FILENAME_IDENTIFIER_NODE (file
, current_jcf
->filename
);
634 if (wfl_operator
== NULL_TREE
)
635 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
636 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
637 input_filename
= ggc_strdup (current_jcf
->filename
);
638 current_class
= NULL_TREE
;
639 current_function_decl
= NULL_TREE
;
640 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
642 if (!(finput
= fopen (input_filename
, "r")))
643 fatal_io_error ("can't reopen %s", input_filename
);
644 parse_source_file (file
, finput
);
646 fatal_io_error ("can't close %s", input_filename
);
648 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file
));
649 java_parser_context_restore_global ();
652 /* Parse the .class file JCF. */
661 if (jcf_parse_preamble (jcf
) != 0)
662 fatal_error ("not a valid Java .class file");
663 code
= jcf_parse_constant_pool (jcf
);
665 fatal_error ("error while parsing constant pool");
666 code
= verify_constant_pool (jcf
);
668 fatal_error ("error in constant pool entry #%d\n", code
);
670 jcf_parse_class (jcf
);
671 if (main_class
== NULL_TREE
)
672 main_class
= current_class
;
673 if (! quiet_flag
&& TYPE_NAME (current_class
))
674 fprintf (stderr
, " %s %s",
675 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
676 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
677 if (CLASS_LOADED_P (current_class
))
679 CLASS_LOADED_P (current_class
) = 1;
681 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
683 switch (JPOOL_TAG (jcf
, i
))
686 get_class_constant (jcf
, i
);
691 code
= jcf_parse_fields (jcf
);
693 fatal_error ("error while parsing fields");
694 code
= jcf_parse_methods (jcf
);
696 fatal_error ("error while parsing methods");
697 code
= jcf_parse_final_attributes (jcf
);
699 fatal_error ("error while parsing final attributes");
701 /* The fields of class_type_node are already in correct order. */
702 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
703 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
705 layout_class (current_class
);
706 if (current_class
== object_type_node
)
707 layout_class_methods (object_type_node
);
709 all_class_list
= tree_cons (NULL_TREE
,
710 TYPE_NAME (current_class
), all_class_list
);
712 /* And if we came across inner classes, load them now. */
713 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (current_class
)); current
;
714 current
= TREE_CHAIN (current
))
716 tree name
= DECL_NAME (TREE_PURPOSE (current
));
717 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
718 if (decl
&& !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
719 load_class (name
, 1);
724 init_outgoing_cpool ()
726 current_constant_pool_data_ref
= NULL_TREE
;
727 outgoing_cpool
= (struct CPool
*)xmalloc (sizeof (struct CPool
));
728 memset (outgoing_cpool
, 0, sizeof (struct CPool
));
735 const char *save_input_filename
= input_filename
;
736 int save_lineno
= lineno
;
738 java_layout_seen_class_methods ();
740 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
742 debug_start_source_file (input_filename
);
743 init_outgoing_cpool ();
745 /* Currently we always have to emit calls to _Jv_InitClass when
746 compiling from class files. */
747 always_initialize_class_p
= 1;
749 for ( method
= TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class
));
750 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
752 JCF
*jcf
= current_jcf
;
754 if (METHOD_ABSTRACT (method
))
757 if (METHOD_NATIVE (method
))
761 DECL_MAX_LOCALS (method
)
762 = list_length (TYPE_ARG_TYPES (TREE_TYPE (method
)));
763 start_java_method (method
);
764 give_name_to_locals (jcf
);
765 expand_expr_stmt (build_jni_stub (method
));
770 if (DECL_CODE_OFFSET (method
) == 0)
772 error ("missing Code attribute");
777 if (DECL_LINENUMBERS_OFFSET (method
))
780 register unsigned char *ptr
;
781 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
782 linenumber_count
= i
= JCF_readu2 (jcf
);
783 linenumber_table
= ptr
= jcf
->read_ptr
;
785 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
787 int line
= GET_u2 (ptr
);
788 /* Set initial lineno lineno to smallest linenumber.
789 * Needs to be set before init_function_start. */
790 if (lineno
== 0 || line
< lineno
)
796 linenumber_table
= NULL
;
797 linenumber_count
= 0;
800 start_java_method (method
);
802 note_instructions (jcf
, method
);
804 give_name_to_locals (jcf
);
806 /* Actually generate code. */
807 expand_byte_code (jcf
, method
);
812 if (flag_emit_class_files
)
813 write_classfile (current_class
);
817 debug_end_source_file (save_lineno
);
818 input_filename
= save_input_filename
;
819 lineno
= save_lineno
;
822 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
825 parse_source_file (file
, finput
)
829 int save_error_count
= java_error_count
;
830 /* Mark the file as parsed */
831 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
833 jcf_dependency_add_file (input_filename
, 0);
835 lang_init_source (1); /* Error msgs have no method prototypes */
837 /* There's no point in trying to find the current encoding unless we
838 are going to do something intelligent with it -- hence the test
841 #ifdef HAVE_NL_LANGINFO
842 setlocale (LC_CTYPE
, "");
843 if (current_encoding
== NULL
)
844 current_encoding
= nl_langinfo (CODESET
);
845 #endif /* HAVE_NL_LANGINFO */
846 #endif /* HAVE_ICONV */
847 if (current_encoding
== NULL
|| *current_encoding
== '\0')
848 current_encoding
= DEFAULT_ENCODING
;
850 /* Initialize the parser */
851 java_init_lex (finput
, current_encoding
);
852 java_parse_abort_on_error ();
854 java_parse (); /* Parse and build partial tree nodes. */
855 java_parse_abort_on_error ();
856 java_complete_class (); /* Parse unsatisfied class decl. */
857 java_parse_abort_on_error ();
858 java_check_circular_reference (); /* Check on circular references */
859 java_parse_abort_on_error ();
860 java_fix_constructors (); /* Fix the constructors */
861 java_parse_abort_on_error ();
862 java_reorder_fields (); /* Reorder the fields */
866 predefined_filename_p (node
)
870 for (i
= 0; i
< PREDEF_FILENAMES_SIZE
; i
++)
871 if (predef_filenames
[i
] == node
)
879 int several_files
= 0;
880 char *list
= xstrdup (input_filename
), *next
;
886 next
= strchr (list
, '&');
899 int len
= strlen (list
);
901 if (*list
!= '/' && several_files
)
902 obstack_grow (&temporary_obstack
, "./", 2);
904 obstack_grow0 (&temporary_obstack
, list
, len
);
905 value
= obstack_finish (&temporary_obstack
);
907 /* Exclude file that we see twice on the command line. For
908 all files except {Class,Error,Object,RuntimeException,String,
909 Throwable}.java we can rely on maybe_get_identifier. For
910 these files, we need to do a linear search of
911 current_file_list. This search happens only for these
912 files, presumably only when we're recompiling libgcj. */
914 if ((id
= maybe_get_identifier (value
)))
916 if (predefined_filename_p (id
))
919 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
920 if (TREE_VALUE (c
) == id
)
929 const char *saved_input_filename
= input_filename
;
930 input_filename
= value
;
931 warning ("source file seen twice on command line and will be compiled only once.");
932 input_filename
= saved_input_filename
;
936 BUILD_FILENAME_IDENTIFIER_NODE (node
, value
);
937 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
938 current_file_list
= tree_cons (NULL_TREE
, node
,
946 current_jcf
= main_jcf
;
947 current_file_list
= nreverse (current_file_list
);
948 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
950 tree name
= TREE_VALUE (node
);
952 /* Skip already parsed files */
953 if (HAS_BEEN_ALREADY_PARSED_P (name
))
956 /* Close previous descriptor, if any */
957 if (main_jcf
->read_state
&& fclose (main_jcf
->read_state
))
958 fatal_io_error ("can't close %s",
959 main_jcf
->filename
? main_jcf
->filename
: "<unknown>");
961 /* Set jcf up and open a new file */
963 main_jcf
->read_state
= fopen (IDENTIFIER_POINTER (name
), "rb");
964 if (main_jcf
->read_state
== NULL
)
965 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name
));
967 /* Set new input_filename and finput */
968 finput
= main_jcf
->read_state
;
969 #ifdef IO_BUFFER_SIZE
970 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
),
971 _IOFBF
, IO_BUFFER_SIZE
);
973 input_filename
= IDENTIFIER_POINTER (name
);
974 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
976 switch (jcf_figure_file_type (current_jcf
))
979 parse_zip_file_entries ();
982 jcf_parse (current_jcf
);
986 java_push_parser_context ();
987 java_parser_context_save_global ();
988 parse_source_file (name
, finput
);
989 java_parser_context_restore_global ();
990 java_pop_parser_context (1);
995 java_expand_classes ();
996 if (!java_report_errors () && !flag_syntax_only
)
997 emit_register_classes ();
1001 static struct ZipFile
*localToFile
;
1003 /* Process all class entries found in the zip file. */
1005 parse_zip_file_entries (void)
1007 struct ZipDirectory
*zdir
;
1010 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1011 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1015 /* We don't need to consider those files. */
1016 if (!zdir
->size
|| !zdir
->filename_offset
)
1019 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
1020 current_jcf
= TYPE_JCF (class);
1021 current_class
= class;
1023 if ( !CLASS_LOADED_P (class))
1025 read_zip_member(current_jcf
, zdir
, localToFile
);
1026 jcf_parse (current_jcf
);
1029 if (TYPE_SIZE (current_class
) != error_mark_node
)
1031 input_filename
= current_jcf
->filename
;
1032 parse_class_file ();
1033 FREE (current_jcf
->buffer
); /* No longer necessary */
1034 /* Note: there is a way to free this buffer right after a
1035 class seen in a zip file has been parsed. The idea is the
1036 set its jcf in such a way that buffer will be reallocated
1037 the time the code for the class will be generated. FIXME. */
1042 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1043 jcf up for further processing and link it to the created class. */
1046 process_zip_dir (FILE *finput
)
1051 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1052 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1054 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1059 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1061 /* We choose to not to process entries with a zero size or entries
1062 not bearing the .class extention. */
1063 if (!zdir
->size
|| !zdir
->filename_offset
||
1064 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
1067 /* So it will be skipped in parse_zip_file_entries */
1072 class_name
= ALLOC (zdir
->filename_length
+1-6);
1073 file_name
= ALLOC (zdir
->filename_length
+1);
1074 jcf
= ALLOC (sizeof (JCF
));
1077 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
1078 class_name
[zdir
->filename_length
-6] = '\0';
1079 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1080 file_name
[zdir
->filename_length
] = '\0';
1082 for (j
=0; class_name
[j
]; j
++)
1083 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
1085 /* Yes, we write back the true class name into the zip directory. */
1086 strcpy (class_name_in_zip_dir
, class_name
);
1087 zdir
->filename_length
= j
;
1088 class = lookup_class (get_identifier (class_name
));
1090 jcf
->read_state
= finput
;
1091 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1092 jcf
->java_source
= 0;
1093 jcf
->classname
= class_name
;
1094 jcf
->filename
= file_name
;
1097 TYPE_JCF (class) = jcf
;
1101 /* Figure what kind of file we're dealing with */
1103 DEFUN(jcf_figure_file_type
, (jcf
),
1106 unsigned char magic_string
[4];
1109 if (fread (magic_string
, 1, 4, jcf
->read_state
) != 4)
1110 jcf_unexpected_eof (jcf
, 4);
1112 fseek (jcf
->read_state
, 0L, SEEK_SET
);
1113 magic
= GET_u4 (magic_string
);
1115 if (magic
== 0xcafebabe)
1118 /* FIXME: is it a system file? */
1119 if (magic
== (JCF_u4
)ZIPMAGIC
1120 && !open_in_zip (jcf
, input_filename
, NULL
, 0))
1122 localToFile
= SeenZipFiles
;
1123 /* Register all the class defined there. */
1124 process_zip_dir (jcf
->read_state
);
1131 /* Initialization. */
1136 /* Register roots with the garbage collector. */
1137 ggc_add_tree_root (parse_roots
, sizeof (parse_roots
) / sizeof(tree
));
1139 ggc_add_root (¤t_jcf
, 1, sizeof (JCF
), (void (*)(void *))ggc_mark_jcf
);