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_class_file
PARAMS ((void));
100 static void set_source_filename
PARAMS ((JCF
*, int));
101 static int predefined_filename_p
PARAMS ((tree
));
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"
253 parse_signature (jcf
, sig_index
)
257 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
258 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
261 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
262 JPOOL_UTF_LENGTH (jcf
, sig_index
));
266 java_set_yydebug (value
)
273 get_constant (jcf
, index
)
279 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
281 tag
= JPOOL_TAG (jcf
, index
);
282 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
283 return (tree
) jcf
->cpool
.data
[index
];
286 case CONSTANT_Integer
:
288 jint num
= JPOOL_INT(jcf
, index
);
289 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
290 TREE_TYPE (value
) = int_type_node
;
295 jint num
= JPOOL_INT (jcf
, index
);
296 HOST_WIDE_INT lo
, hi
;
297 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
298 num
= JPOOL_INT (jcf
, index
+1) & 0xffffffff;
299 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
300 value
= build_int_2 (lo
, hi
);
301 TREE_TYPE (value
) = long_type_node
;
302 force_fit_type (value
, 0);
305 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
308 jint num
= JPOOL_INT(jcf
, index
);
310 #ifdef REAL_ARITHMETIC
311 d
= REAL_VALUE_FROM_TARGET_SINGLE (num
);
313 union { float f
; jint i
; } u
;
317 value
= build_real (float_type_node
, d
);
320 case CONSTANT_Double
:
322 HOST_WIDE_INT num
[2];
324 HOST_WIDE_INT lo
, hi
;
325 num
[0] = JPOOL_INT (jcf
, index
);
326 lshift_double (num
[0], 0, 32, 64, &lo
, &hi
, 0);
327 num
[0] = JPOOL_INT (jcf
, index
+1);
328 add_double (lo
, hi
, num
[0], 0, &lo
, &hi
);
329 if (FLOAT_WORDS_BIG_ENDIAN
)
339 #ifdef REAL_ARITHMETIC
340 d
= REAL_VALUE_FROM_TARGET_DOUBLE (num
);
343 union { double d
; jint i
[2]; } u
;
344 u
.i
[0] = (jint
) num
[0];
345 u
.i
[1] = (jint
) num
[1];
349 value
= build_real (double_type_node
, d
);
352 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
353 case CONSTANT_String
:
355 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
356 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
357 int utf8_len
= IDENTIFIER_LENGTH (name
);
358 unsigned char *str_ptr
;
360 const unsigned char *utf8
;
363 /* Count the number of Unicode characters in the string,
364 while checking for a malformed Utf8 string. */
365 utf8
= (const unsigned char *) utf8_ptr
;
370 int char_len
= UT8_CHAR_LENGTH (*utf8
);
371 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
372 fatal_error ("bad string constant");
379 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
380 into the new space. */
381 str_ptr
= (unsigned char *) alloca (2 * str_len
);
383 utf8
= (const unsigned char *)utf8_ptr
;
385 for (i
= 0; i
< str_len
; i
++)
388 int char_len
= UT8_CHAR_LENGTH (*utf8
);
392 char_value
= *utf8
++;
395 char_value
= *utf8
++ & 0x1F;
396 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
399 char_value
= *utf8
++ & 0x0F;
400 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
401 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
406 if (BYTES_BIG_ENDIAN
)
408 *str
++ = char_value
>> 8;
409 *str
++ = char_value
& 0xFF;
413 *str
++ = char_value
& 0xFF;
414 *str
++ = char_value
>> 8;
417 value
= build_string (str
- str_ptr
, str_ptr
);
418 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
424 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
425 jcf
->cpool
.data
[index
] = (jword
) value
;
428 internal_error ("bad value constant type %d, index %d",
429 JPOOL_TAG (jcf
, index
), index
);
433 get_name_constant (jcf
, index
)
437 tree name
= get_constant (jcf
, index
);
439 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
445 /* Handle reading innerclass attributes. If a non zero entry (denoting
446 a non anonymous entry) is found, We augment the inner class list of
447 the outer context with the newly resolved innerclass. */
450 handle_innerclass_attribute (count
, jcf
)
457 /* Read inner_class_info_index. This may be 0 */
458 int icii
= JCF_readu2 (jcf
);
459 /* Read outer_class_info_index. If the innerclasses attribute
460 entry isn't a member (like an inner class) the value is 0. */
461 int ocii
= JCF_readu2 (jcf
);
462 /* Read inner_name_index. If the class we're dealing with is
463 an annonymous class, it must be 0. */
464 int ini
= JCF_readu2 (jcf
);
465 /* Read the access flag. */
466 int acc
= JCF_readu2 (jcf
);
467 /* If icii is 0, don't try to read the class. */
470 tree
class = get_class_constant (jcf
, icii
);
471 tree decl
= TYPE_NAME (class);
472 /* Skip reading further if ocii is null */
473 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
475 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
476 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
477 set_class_decl_access_flags (acc
, decl
);
478 DECL_CONTEXT (decl
) = outer
;
479 DECL_INNER_CLASS_LIST (outer
) =
480 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
481 CLASS_COMPLETE_P (decl
) = 1;
488 give_name_to_class (jcf
, i
)
492 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
493 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
498 int j
= JPOOL_USHORT1 (jcf
, i
);
499 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
500 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
501 JPOOL_UTF_LENGTH (jcf
, j
));
502 this_class
= lookup_class (class_name
);
503 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
505 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
506 main_input_filename
= input_filename
;
508 jcf
->cpool
.data
[i
] = (jword
) this_class
;
509 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
514 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
517 get_class_constant (JCF
*jcf
, int i
)
520 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
521 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
524 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
526 int name_index
= JPOOL_USHORT1 (jcf
, i
);
527 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
528 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
529 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
531 if (name
[0] == '[') /* Handle array "classes". */
532 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
535 tree cname
= unmangle_classname (name
, nlength
);
536 type
= lookup_class (cname
);
538 jcf
->cpool
.data
[i
] = (jword
) type
;
539 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
542 type
= (tree
) jcf
->cpool
.data
[i
];
546 /* Read a class with the fully qualified-name NAME.
547 Return 1 iff we read the requested file.
548 (It is still possible we failed if the file did not
549 define the class it is supposed to.) */
556 tree icv
, class = NULL_TREE
;
557 tree save_current_class
= current_class
;
558 const char *save_input_filename
= input_filename
;
559 JCF
*save_current_jcf
= current_jcf
;
561 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
563 class = TREE_TYPE (icv
);
564 jcf
= TYPE_JCF (class);
571 this_jcf
.zipd
= NULL
;
573 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
580 if (current_jcf
->java_source
)
582 const char *filename
= current_jcf
->filename
;
587 java_parser_context_save_global ();
588 java_push_parser_context ();
589 BUILD_FILENAME_IDENTIFIER_NODE (file
, filename
);
590 generate
= IS_A_COMMAND_LINE_FILENAME_P (file
);
591 if (wfl_operator
== NULL_TREE
)
592 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
593 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
594 input_filename
= ggc_strdup (filename
);
595 current_class
= NULL_TREE
;
596 current_function_decl
= NULL_TREE
;
597 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
599 if (!(finput
= fopen (input_filename
, "r")))
600 fatal_io_error ("can't reopen %s", input_filename
);
601 parse_source_file_1 (file
, finput
);
602 parse_source_file_2 ();
604 fatal_io_error ("can't close %s", input_filename
);
606 JCF_FINISH (current_jcf
);
607 java_pop_parser_context (generate
);
608 java_parser_context_restore_global ();
612 if (class == NULL_TREE
|| ! CLASS_PARSED_P (class))
614 java_parser_context_save_global ();
615 java_push_parser_context ();
616 current_class
= class;
617 input_filename
= current_jcf
->filename
;
618 if (JCF_SEEN_IN_ZIP (current_jcf
))
619 read_zip_member(current_jcf
,
620 current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
621 jcf_parse (current_jcf
);
622 class = current_class
;
623 java_pop_parser_context (0);
624 java_parser_context_restore_global ();
626 layout_class (class);
627 load_inner_classes (class);
630 current_class
= save_current_class
;
631 input_filename
= save_input_filename
;
632 current_jcf
= save_current_jcf
;
636 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
637 called from the parser, otherwise it's a RECORD_TYPE node. If
638 VERBOSE is 1, print error message on failure to load a class. */
640 /* Replace calls to load_class by having callers call read_class directly
641 - and then perhaps rename read_class to load_class. FIXME */
644 load_class (class_or_name
, verbose
)
651 /* class_or_name can be the name of the class we want to load */
652 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
653 name
= class_or_name
;
654 /* In some cases, it's a dependency that we process earlier that
656 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
657 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
658 /* Or it's a type in the making */
660 name
= DECL_NAME (TYPE_NAME (class_or_name
));
667 if ((class_loaded
= read_class (name
)))
670 /* We failed loading name. Now consider that we might be looking
671 for a inner class but it's only available in source for in
672 its enclosing context. */
673 if ((dollar
= strrchr (IDENTIFIER_POINTER (name
), '$')))
677 name
= get_identifier (IDENTIFIER_POINTER (name
));
680 /* Otherwise, we failed, we bail. */
685 if (!class_loaded
&& verbose
)
686 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved
));
689 /* Parse the .class file JCF. */
697 if (jcf_parse_preamble (jcf
) != 0)
698 fatal_error ("not a valid Java .class file");
699 code
= jcf_parse_constant_pool (jcf
);
701 fatal_error ("error while parsing constant pool");
702 code
= verify_constant_pool (jcf
);
704 fatal_error ("error in constant pool entry #%d\n", code
);
706 jcf_parse_class (jcf
);
707 if (main_class
== NULL_TREE
)
708 main_class
= current_class
;
709 if (! quiet_flag
&& TYPE_NAME (current_class
))
710 fprintf (stderr
, " %s %s",
711 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
712 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
713 if (CLASS_PARSED_P (current_class
))
715 /* FIXME - where was first time */
716 fatal_error ("reading class %s for the second time from %s",
717 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))),
720 CLASS_PARSED_P (current_class
) = 1;
722 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
724 switch (JPOOL_TAG (jcf
, i
))
727 get_class_constant (jcf
, i
);
732 code
= jcf_parse_fields (jcf
);
734 fatal_error ("error while parsing fields");
735 code
= jcf_parse_methods (jcf
);
737 fatal_error ("error while parsing methods");
738 code
= jcf_parse_final_attributes (jcf
);
740 fatal_error ("error while parsing final attributes");
742 /* The fields of class_type_node are already in correct order. */
743 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
744 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
746 if (current_class
== object_type_node
)
748 layout_class_methods (object_type_node
);
749 /* If we don't have the right archive, emit a verbose warning.
750 If we're generating bytecode, emit the warning only if
751 -fforce-classes-archive-check was specified. */
753 && (!flag_emit_class_files
|| flag_force_classes_archive_check
))
754 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
);
757 all_class_list
= tree_cons (NULL_TREE
,
758 TYPE_NAME (current_class
), all_class_list
);
761 /* If we came across inner classes, load them now. */
763 load_inner_classes (cur_class
)
767 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class
)); current
;
768 current
= TREE_CHAIN (current
))
770 tree name
= DECL_NAME (TREE_PURPOSE (current
));
771 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
772 if (decl
&& ! CLASS_LOADED_P (TREE_TYPE (decl
))
773 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
774 load_class (name
, 1);
779 init_outgoing_cpool ()
781 current_constant_pool_data_ref
= NULL_TREE
;
782 outgoing_cpool
= (struct CPool
*)xmalloc (sizeof (struct CPool
));
783 memset (outgoing_cpool
, 0, sizeof (struct CPool
));
790 const char *save_input_filename
= input_filename
;
791 int save_lineno
= lineno
;
793 java_layout_seen_class_methods ();
795 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
797 (*debug_hooks
->start_source_file
) (lineno
, input_filename
);
798 init_outgoing_cpool ();
800 /* Currently we always have to emit calls to _Jv_InitClass when
801 compiling from class files. */
802 always_initialize_class_p
= 1;
804 for ( method
= TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class
));
805 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
807 JCF
*jcf
= current_jcf
;
809 if (METHOD_ABSTRACT (method
))
812 if (METHOD_NATIVE (method
))
819 /* We need to compute the DECL_MAX_LOCALS. We need to take
820 the wide types into account too. */
821 for (arg
= TYPE_ARG_TYPES (TREE_TYPE (method
)), decl_max_locals
= 0;
822 arg
!= end_params_node
;
823 arg
= TREE_CHAIN (arg
), decl_max_locals
+= 1)
825 if (TREE_VALUE (arg
) && TYPE_IS_WIDE (TREE_VALUE (arg
)))
826 decl_max_locals
+= 1;
828 DECL_MAX_LOCALS (method
) = decl_max_locals
;
829 start_java_method (method
);
830 give_name_to_locals (jcf
);
831 expand_expr_stmt (build_jni_stub (method
));
836 if (DECL_CODE_OFFSET (method
) == 0)
838 current_function_decl
= method
;
839 error ("missing Code attribute");
844 if (DECL_LINENUMBERS_OFFSET (method
))
847 register unsigned char *ptr
;
848 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
849 linenumber_count
= i
= JCF_readu2 (jcf
);
850 linenumber_table
= ptr
= jcf
->read_ptr
;
852 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
854 int line
= GET_u2 (ptr
);
855 /* Set initial lineno lineno to smallest linenumber.
856 * Needs to be set before init_function_start. */
857 if (lineno
== 0 || line
< lineno
)
863 linenumber_table
= NULL
;
864 linenumber_count
= 0;
867 start_java_method (method
);
869 note_instructions (jcf
, method
);
871 give_name_to_locals (jcf
);
873 /* Actually generate code. */
874 expand_byte_code (jcf
, method
);
879 if (flag_emit_class_files
)
880 write_classfile (current_class
);
884 (*debug_hooks
->end_source_file
) (save_lineno
);
885 input_filename
= save_input_filename
;
886 lineno
= save_lineno
;
889 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
892 parse_source_file_1 (file
, finput
)
896 int save_error_count
= java_error_count
;
897 /* Mark the file as parsed */
898 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
900 jcf_dependency_add_file (input_filename
, 0);
902 lang_init_source (1); /* Error msgs have no method prototypes */
904 /* There's no point in trying to find the current encoding unless we
905 are going to do something intelligent with it -- hence the test
908 #ifdef HAVE_NL_LANGINFO
909 setlocale (LC_CTYPE
, "");
910 if (current_encoding
== NULL
)
911 current_encoding
= nl_langinfo (CODESET
);
912 #endif /* HAVE_NL_LANGINFO */
913 #endif /* HAVE_ICONV */
914 if (current_encoding
== NULL
|| *current_encoding
== '\0')
915 current_encoding
= DEFAULT_ENCODING
;
917 /* Initialize the parser */
918 java_init_lex (finput
, current_encoding
);
919 java_parse_abort_on_error ();
921 java_parse (); /* Parse and build partial tree nodes. */
922 java_parse_abort_on_error ();
925 /* Process a parsed source file, resolving names etc. */
928 parse_source_file_2 ()
930 int save_error_count
= java_error_count
;
931 java_complete_class (); /* Parse unsatisfied class decl. */
932 java_parse_abort_on_error ();
933 java_check_circular_reference (); /* Check on circular references */
934 java_parse_abort_on_error ();
935 java_fix_constructors (); /* Fix the constructors */
936 java_parse_abort_on_error ();
937 java_reorder_fields (); /* Reorder the fields */
941 predefined_filename_p (node
)
945 for (i
= 0; i
< PREDEF_FILENAMES_SIZE
; i
++)
946 if (predef_filenames
[i
] == node
)
954 int filename_count
= 0;
959 if (flag_filelist_file
)
962 finput
= fopen (input_filename
, "r");
964 fatal_io_error ("can't open %s", input_filename
);
965 list
= xmalloc(avail
);
973 avail
= 2 * (count
+ avail
);
974 list
= xrealloc (list
, avail
);
976 avail
= avail
- count
;
978 /* Subtract to to guarantee space for final '\0'. */
979 count
= fread (next
, 1, avail
- 1, finput
);
983 fatal_io_error ("error closing %s", input_filename
);
994 list
= xstrdup (input_filename
);
998 for (next
= list
; ; )
1001 if (ch
== '\n' || ch
== '\r' || ch
== '\t' || ch
== ' '
1002 || ch
== '&' /* FIXME */)
1030 int len
= strlen (list
);
1032 if (*list
!= '/' && filename_count
> 0)
1033 obstack_grow (&temporary_obstack
, "./", 2);
1035 obstack_grow0 (&temporary_obstack
, list
, len
);
1036 value
= obstack_finish (&temporary_obstack
);
1040 /* Exclude file that we see twice on the command line. For
1041 all files except {Class,Error,Object,RuntimeException,String,
1042 Throwable}.java we can rely on maybe_get_identifier. For
1043 these files, we need to do a linear search of
1044 current_file_list. This search happens only for these
1045 files, presumably only when we're recompiling libgcj. */
1047 if ((id
= maybe_get_identifier (value
)))
1049 if (predefined_filename_p (id
))
1052 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
1053 if (TREE_VALUE (c
) == id
)
1062 const char *saved_input_filename
= input_filename
;
1063 input_filename
= value
;
1064 warning ("source file seen twice on command line and will be compiled only once");
1065 input_filename
= saved_input_filename
;
1069 BUILD_FILENAME_IDENTIFIER_NODE (node
, value
);
1070 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
1071 current_file_list
= tree_cons (NULL_TREE
, node
,
1079 if (filename_count
== 0)
1080 warning ("no input file specified");
1084 const char *resource_filename
;
1086 /* Only one resource file may be compiled at a time. */
1087 assert (TREE_CHAIN (current_file_list
) == NULL
);
1089 resource_filename
= IDENTIFIER_POINTER (TREE_VALUE (current_file_list
));
1090 compile_resource_file (resource_name
, resource_filename
);
1092 java_expand_classes ();
1093 if (!java_report_errors ())
1094 emit_register_classes ();
1098 current_jcf
= main_jcf
;
1099 current_file_list
= nreverse (current_file_list
);
1100 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1102 unsigned char magic_string
[4];
1104 tree name
= TREE_VALUE (node
);
1106 /* Skip already parsed files */
1107 if (HAS_BEEN_ALREADY_PARSED_P (name
))
1110 /* Close previous descriptor, if any */
1111 if (finput
&& fclose (finput
))
1112 fatal_io_error ("can't close input file %s", main_input_filename
);
1114 finput
= fopen (IDENTIFIER_POINTER (name
), "rb");
1116 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name
));
1118 #ifdef IO_BUFFER_SIZE
1119 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
),
1120 _IOFBF
, IO_BUFFER_SIZE
);
1122 input_filename
= IDENTIFIER_POINTER (name
);
1124 /* Figure what kind of file we're dealing with */
1125 if (fread (magic_string
, 1, 4, finput
) == 4)
1127 fseek (finput
, 0L, SEEK_SET
);
1128 magic
= GET_u4 (magic_string
);
1130 if (magic
== 0xcafebabe)
1132 CLASS_FILE_P (node
) = 1;
1133 current_jcf
= ALLOC (sizeof (JCF
));
1134 JCF_ZERO (current_jcf
);
1135 current_jcf
->read_state
= finput
;
1136 current_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1137 jcf_parse (current_jcf
);
1138 TYPE_JCF (current_class
) = current_jcf
;
1139 CLASS_FROM_CURRENTLY_COMPILED_P (current_class
) = 1;
1140 TREE_PURPOSE (node
) = current_class
;
1142 else if (magic
== (JCF_u4
)ZIPMAGIC
)
1144 ZIP_FILE_P (node
) = 1;
1145 JCF_ZERO (main_jcf
);
1146 main_jcf
->read_state
= finput
;
1147 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1148 if (open_in_zip (main_jcf
, input_filename
, NULL
, 0) < 0)
1149 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name
));
1150 localToFile
= SeenZipFiles
;
1151 /* Register all the class defined there. */
1152 process_zip_dir (main_jcf
->read_state
);
1153 parse_zip_file_entries ();
1156 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1161 JAVA_FILE_P (node
) = 1;
1162 java_push_parser_context ();
1163 java_parser_context_save_global ();
1164 parse_source_file_1 (name
, finput
);
1165 java_parser_context_restore_global ();
1166 java_pop_parser_context (1);
1170 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1172 input_filename
= ctxp
->filename
;
1173 parse_source_file_2 ();
1175 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1177 input_filename
= IDENTIFIER_POINTER (TREE_VALUE (node
));
1178 if (CLASS_FILE_P (node
))
1180 current_class
= TREE_PURPOSE (node
);
1181 current_jcf
= TYPE_JCF (current_class
);
1182 layout_class (current_class
);
1183 load_inner_classes (current_class
);
1184 parse_class_file ();
1185 JCF_FINISH (current_jcf
);
1188 input_filename
= main_input_filename
;
1190 java_expand_classes ();
1191 if (!java_report_errors () && !flag_syntax_only
)
1193 emit_register_classes ();
1194 if (flag_indirect_dispatch
)
1195 emit_offset_symbol_table ();
1200 /* Process all class entries found in the zip file. */
1202 parse_zip_file_entries (void)
1204 struct ZipDirectory
*zdir
;
1207 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1208 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1212 /* We don't need to consider those files. */
1213 if (!zdir
->size
|| !zdir
->filename_offset
)
1216 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
1217 current_jcf
= TYPE_JCF (class);
1218 current_class
= class;
1220 if ( !CLASS_LOADED_P (class))
1222 if (! CLASS_PARSED_P (class))
1224 read_zip_member(current_jcf
, zdir
, localToFile
);
1225 jcf_parse (current_jcf
);
1227 layout_class (current_class
);
1228 load_inner_classes (current_class
);
1231 if (TYPE_SIZE (current_class
) != error_mark_node
)
1233 input_filename
= current_jcf
->filename
;
1234 parse_class_file ();
1235 FREE (current_jcf
->buffer
); /* No longer necessary */
1236 /* Note: there is a way to free this buffer right after a
1237 class seen in a zip file has been parsed. The idea is the
1238 set its jcf in such a way that buffer will be reallocated
1239 the time the code for the class will be generated. FIXME. */
1244 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1245 jcf up for further processing and link it to the created class. */
1248 process_zip_dir (FILE *finput
)
1253 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1254 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1256 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1261 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1263 /* We choose to not to process entries with a zero size or entries
1264 not bearing the .class extension. */
1265 if (!zdir
->size
|| !zdir
->filename_offset
||
1266 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
1269 /* So it will be skipped in parse_zip_file_entries */
1274 class_name
= ALLOC (zdir
->filename_length
+1-6);
1275 file_name
= ALLOC (zdir
->filename_length
+1);
1276 jcf
= ALLOC (sizeof (JCF
));
1279 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
1280 class_name
[zdir
->filename_length
-6] = '\0';
1281 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1282 file_name
[zdir
->filename_length
] = '\0';
1284 for (j
=0; class_name
[j
]; j
++)
1285 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
1287 /* Yes, we write back the true class name into the zip directory. */
1288 strcpy (class_name_in_zip_dir
, class_name
);
1289 zdir
->filename_length
= j
;
1290 class = lookup_class (get_identifier (class_name
));
1292 jcf
->read_state
= finput
;
1293 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1294 jcf
->java_source
= 0;
1295 jcf
->classname
= class_name
;
1296 jcf
->filename
= file_name
;
1299 TYPE_JCF (class) = jcf
;
1303 /* Initialization. */
1308 /* Register roots with the garbage collector. */
1309 ggc_add_tree_root (parse_roots
, sizeof (parse_roots
) / sizeof(tree
));
1311 ggc_add_root (¤t_jcf
, 1, sizeof (JCF
), (void (*)(void *))ggc_mark_jcf
);