1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
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 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
34 #include "java-tree.h"
48 static void java_init PARAMS ((void));
49 static void java_init_options PARAMS ((void));
50 static int java_decode_option PARAMS ((int, char **));
51 static void put_decl_string PARAMS ((const char *, int));
52 static void put_decl_node PARAMS ((tree));
53 static void java_dummy_print PARAMS ((const char *));
54 static void lang_print_error PARAMS ((const char *));
55 static int process_option_with_no PARAMS ((char *,
56 struct string_option *,
60 # define OBJECT_SUFFIX ".o"
63 /* Table indexed by tree code giving a string containing a character
64 classifying the tree code. Possibilities are
65 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
67 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
69 char java_tree_code_type[] = {
71 #include "java-tree.def"
75 /* Table indexed by tree code giving number of expression
76 operands beyond the fixed part of the node structure.
77 Not used for types or decls. */
79 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
81 int java_tree_code_length[] = {
83 #include "java-tree.def"
87 /* Names of tree components.
88 Used for printing out the tree and error messages. */
89 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
91 const char *java_tree_code_name[] = {
93 #include "java-tree.def"
97 int compiling_from_source;
99 const char * const language_string = "GNU Java";
101 /* Nonzero if we should make is_compiled_class always return 1 for
102 appropriate classes that we're referencing. */
104 int flag_assume_compiled = 1;
106 int flag_emit_class_files = 0;
108 /* Nonzero if input file is a file with a list of filenames to compile. */
110 int flag_filelist_file = 0;
112 /* When non zero, we emit xref strings. Values of the flag for xref
113 backends are defined in xref_flag_table, xref.c. */
115 int flag_emit_xref = 0;
117 /* When non zero, -Wall was turned on. */
120 /* When non zero, check for redundant modifier uses. */
121 int flag_redundant = 0;
123 /* When non zero, call a library routine to do integer divisions. */
124 int flag_use_divide_subroutine = 1;
126 /* When non zero, generate code for the Boehm GC. */
127 int flag_use_boehm_gc = 0;
129 /* When non zero, assume the runtime uses a hash table to map an
130 object to its synchronization structure. */
131 int flag_hash_synchronization;
133 /* When non zero, assume all native functions are implemented with
137 /* When non zero, warn when source file is newer than matching class
141 /* When non zero, generate checks for references to NULL. */
142 int flag_check_references = 0;
144 /* The encoding of the source file. */
145 const char *current_encoding = NULL;
147 /* When non zero, report the now deprecated empty statements. */
148 int flag_extraneous_semicolon;
150 /* When non zero, always check for a non gcj generated classes archive. */
151 int flag_force_classes_archive_check;
153 /* Table of language-dependent -f options.
154 STRING is the option name. VARIABLE is the address of the variable.
155 ON_VALUE is the value to store in VARIABLE
156 if `-fSTRING' is seen as an option.
157 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
159 static struct string_option
162 {"emit-class-file", &flag_emit_class_files, 1},
163 {"emit-class-files", &flag_emit_class_files, 1},
164 {"filelist-file", &flag_filelist_file, 1},
165 {"use-divide-subroutine", &flag_use_divide_subroutine, 1},
166 {"use-boehm-gc", &flag_use_boehm_gc, 1},
167 {"hash-synchronization", &flag_hash_synchronization, 1},
168 {"jni", &flag_jni, 1},
169 {"check-references", &flag_check_references, 1},
170 {"force-classes-archive-check", &flag_force_classes_archive_check, 1}
173 static struct string_option
176 { "redundant-modifiers", &flag_redundant, 1 },
177 { "extraneous-semicolon", &flag_extraneous_semicolon, 1 },
178 { "out-of-date", &flag_newer, 1 }
183 /* Variable controlling how dependency tracking is enabled in
185 static int dependency_tracking = 0;
187 /* Flag values for DEPENDENCY_TRACKING. */
188 #define DEPEND_SET_FILE 1
189 #define DEPEND_ENABLE 2
190 #define DEPEND_TARGET_SET 4
191 #define DEPEND_FILE_ALREADY_SET 8
193 /* Each front end provides its own. */
194 struct lang_hooks lang_hooks = {java_init,
195 NULL, /* java_finish */
198 NULL /* post_options */};
200 /* Process an option that can accept a `no-' form.
201 Return 1 if option found, 0 otherwise. */
203 process_option_with_no (p, table, table_size)
205 struct string_option *table;
210 for (j = 0; j < table_size; j++)
212 if (!strcmp (p, table[j].string))
214 *table[j].variable = table[j].on_value;
217 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
218 && ! strcmp (p+3, table[j].string))
220 *table[j].variable = ! table[j].on_value;
229 * process java-specific compiler command-line options
230 * return 0, but do not complain if the option is not recognised.
233 java_decode_option (argc, argv)
234 int argc __attribute__ ((__unused__));
239 #define CLARG "-fassume-compiled="
240 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
242 add_assume_compiled (p + sizeof (CLARG) - 1, 0);
246 #define CLARG "-fno-assume-compiled="
247 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
249 add_assume_compiled (p + sizeof (CLARG) - 1, 1);
253 #define CLARG "-fassume-compiled"
254 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
256 add_assume_compiled ("", 0);
260 #define CLARG "-fno-assume-compiled"
261 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
263 add_assume_compiled ("", 1);
267 #define CLARG "-fclasspath="
268 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
270 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
274 #define CLARG "-fCLASSPATH="
275 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
277 jcf_path_CLASSPATH_arg (p + sizeof (CLARG) - 1);
281 else if (strncmp (p, "-I", 2) == 0)
283 jcf_path_include_arg (p + 2);
287 #define ARG "-foutput-class-dir="
288 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
290 jcf_write_base_directory = p + sizeof (ARG) - 1;
294 #define ARG "-fencoding="
295 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
297 current_encoding = p + sizeof (ARG) - 1;
302 if (p[0] == '-' && p[1] == 'f')
304 /* Some kind of -f option.
305 P's value is the option sans `-f'.
306 Search for it in the table of options. */
308 return process_option_with_no (p, lang_f_options,
309 ARRAY_SIZE (lang_f_options));
312 if (strcmp (p, "-Wall") == 0)
316 flag_extraneous_semicolon = 1;
317 /* When -Wall given, enable -Wunused. We do this because the C
318 compiler does it, and people expect it. */
323 if (p[0] == '-' && p[1] == 'W')
325 /* Skip `-W' and see if we accept the option or its `no-' form. */
327 return process_option_with_no (p, lang_W_options,
328 ARRAY_SIZE (lang_W_options));
331 if (strcmp (p, "-MD") == 0)
333 jcf_dependency_init (1);
334 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
337 else if (strcmp (p, "-MMD") == 0)
339 jcf_dependency_init (0);
340 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
343 else if (strcmp (p, "-M") == 0)
345 jcf_dependency_init (1);
346 dependency_tracking |= DEPEND_ENABLE;
349 else if (strcmp (p, "-MM") == 0)
351 jcf_dependency_init (0);
352 dependency_tracking |= DEPEND_ENABLE;
355 else if (strcmp (p, "-MP") == 0)
357 jcf_dependency_print_dummies ();
360 else if (strcmp (p, "-MT") == 0)
362 jcf_dependency_set_target (argv[1]);
363 dependency_tracking |= DEPEND_TARGET_SET;
366 else if (strcmp (p, "-MF") == 0)
368 jcf_dependency_set_dep_file (argv[1]);
369 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
376 /* Global open file. */
380 init_parse (filename)
381 const char *filename;
383 /* Open input file. */
385 if (filename == 0 || !strcmp (filename, "-"))
390 if (dependency_tracking)
391 error ("can't do dependency tracking with input from stdin");
395 if (dependency_tracking)
399 /* If the target is set and the output filename is set, then
400 there's no processing to do here. Otherwise we must
401 compute one or the other. */
402 if (! ((dependency_tracking & DEPEND_TARGET_SET)
403 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
405 dot = strrchr (filename, '.');
407 error ("couldn't determine target name for dependency tracking");
410 char *buf = (char *) xmalloc (dot - filename +
411 3 + sizeof (OBJECT_SUFFIX));
412 strncpy (buf, filename, dot - filename);
414 /* If emitting class files, we might have multiple
415 targets. The class generation code takes care of
416 registering them. Otherwise we compute the
418 if ((dependency_tracking & DEPEND_TARGET_SET))
420 else if (flag_emit_class_files)
421 jcf_dependency_set_target (NULL);
424 strcpy (buf + (dot - filename), OBJECT_SUFFIX);
425 jcf_dependency_set_target (buf);
428 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
430 else if ((dependency_tracking & DEPEND_SET_FILE))
432 strcpy (buf + (dot - filename), ".d");
433 jcf_dependency_set_dep_file (buf);
436 jcf_dependency_set_dep_file ("-");
452 jcf_dependency_write ();
455 /* Buffer used by lang_printable_name. */
456 static char *decl_buf = NULL;
458 /* Allocated size of decl_buf. */
459 static int decl_buflen = 0;
461 /* Length of used part of decl_buf; position for next character. */
462 static int decl_bufpos = 0;
464 /* Append the string STR to decl_buf.
465 It length is given by LEN; -1 means the string is nul-terminated. */
468 put_decl_string (str, len)
474 if (decl_bufpos + len >= decl_buflen)
476 if (decl_buf == NULL)
478 decl_buflen = len + 100;
479 decl_buf = (char *) xmalloc (decl_buflen);
484 decl_buf = (char *) xrealloc (decl_buf, decl_buflen);
487 strcpy (decl_buf + decl_bufpos, str);
491 /* Append to decl_buf a printable name for NODE. */
498 if (TREE_CODE (node) == POINTER_TYPE)
500 node = TREE_TYPE (node);
503 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
504 && DECL_NAME (node) != NULL_TREE)
506 /* We want to print the type the DECL belongs to. We don't do
507 that when we handle constructors. */
508 if (TREE_CODE (node) == FUNCTION_DECL
509 && ! DECL_CONSTRUCTOR_P (node)
510 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
512 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
513 put_decl_string (".", 1);
515 if (! DECL_CONSTRUCTOR_P (node))
516 put_decl_node (DECL_NAME (node));
517 if (TREE_CODE (node) == FUNCTION_DECL && TREE_TYPE (node) != NULL_TREE)
520 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
521 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
522 args = TREE_CHAIN (args);
523 put_decl_string ("(", 1);
524 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
527 put_decl_string (",", 1);
528 put_decl_node (TREE_VALUE (args));
530 put_decl_string (")", 1);
533 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
534 && TYPE_NAME (node) != NULL_TREE)
536 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
538 put_decl_node (TYPE_ARRAY_ELEMENT (node));
539 put_decl_string("[]", 2);
541 else if (node == promoted_byte_type_node)
542 put_decl_string ("byte", 4);
543 else if (node == promoted_short_type_node)
544 put_decl_string ("short", 5);
545 else if (node == promoted_char_type_node)
546 put_decl_string ("char", 4);
547 else if (node == promoted_boolean_type_node)
548 put_decl_string ("boolean", 7);
549 else if (node == void_type_node && was_pointer)
550 put_decl_string ("null", 4);
552 put_decl_node (TYPE_NAME (node));
554 else if (TREE_CODE (node) == IDENTIFIER_NODE)
555 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
557 put_decl_string ("<unknown>", -1);
560 /* Return a user-friendly name for DECL.
561 The resulting string is only valid until the next call.
562 The value of the hook decl_printable_name is this function,
563 which is also called directly by lang_print_error. */
566 lang_printable_name (decl, v)
568 int v __attribute__ ((__unused__));
571 put_decl_node (decl);
572 put_decl_string ("", 1);
576 /* Does the same thing that lang_printable_name, but add a leading
577 space to the DECL name string -- With Leading Space. */
580 lang_printable_name_wls (decl, v)
582 int v __attribute__ ((__unused__));
585 put_decl_node (decl);
586 put_decl_string ("", 1);
591 /* Print on stderr the current class and method context. This function
592 is the value of the hook print_error_function, called from toplev.c. */
595 lang_print_error (file)
598 static tree last_error_function_context = NULL_TREE;
599 static tree last_error_function = NULL;
600 static int initialized_p;
602 /* Register LAST_ERROR_FUNCTION_CONTEXT and LAST_ERROR_FUNCTION with
603 the garbage collector. */
606 ggc_add_tree_root (&last_error_function_context, 1);
607 ggc_add_tree_root (&last_error_function, 1);
611 if (current_function_decl != NULL
612 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
615 fprintf (stderr, "%s: ", file);
617 last_error_function_context = DECL_CONTEXT (current_function_decl);
618 fprintf (stderr, "In class `%s':\n",
619 lang_printable_name (last_error_function_context, 0));
621 if (last_error_function != current_function_decl)
624 fprintf (stderr, "%s: ", file);
626 if (current_function_decl == NULL)
627 fprintf (stderr, "At top level:\n");
630 const char *name = lang_printable_name (current_function_decl, 2);
631 fprintf (stderr, "In method `%s':\n", name);
634 last_error_function = current_function_decl;
643 extern int flag_minimal_debug;
644 flag_minimal_debug = 0;
650 decl_printable_name = lang_printable_name;
651 print_error_function = lang_print_error;
652 lang_expand_expr = java_lang_expand_expr;
654 /* Append to Gcc tree node definition arrays */
656 memcpy (tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE,
658 (int)LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE);
659 memcpy (tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE,
660 java_tree_code_length,
661 (LAST_JAVA_TREE_CODE -
662 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (int));
663 memcpy (tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE,
665 (LAST_JAVA_TREE_CODE -
666 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (char *));
668 using_eh_for_cleanups ();
671 /* This doesn't do anything on purpose. It's used to satisfy the
672 print_error_function hook we don't print error messages with bogus
673 function prototypes. */
677 const char *s __attribute__ ((__unused__));
681 /* Called to install the PRINT_ERROR_FUNCTION hook differently
682 according to LEVEL. LEVEL is 1 during early parsing, when function
683 prototypes aren't fully resolved. print_error_function is set so it
684 doesn't print incomplete function prototypes. When LEVEL is 2,
685 function prototypes are fully resolved and can be printed when
688 void lang_init_source (level)
692 print_error_function = java_dummy_print;
694 print_error_function = lang_print_error;
700 flag_bounds_check = 1;
702 flag_non_call_exceptions = 1;
711 /* Hooks for print_node. */
714 print_lang_decl (file, node, indent)
715 FILE *file __attribute ((__unused__));
716 tree node __attribute ((__unused__));
717 int indent __attribute ((__unused__));
722 print_lang_type (file, node, indent)
723 FILE *file __attribute ((__unused__));
724 tree node __attribute ((__unused__));
725 int indent __attribute ((__unused__));
730 print_lang_identifier (file, node, indent)
731 FILE *file __attribute ((__unused__));
732 tree node __attribute ((__unused__));
733 int indent __attribute ((__unused__));
738 print_lang_statistics ()
742 /* used by print-tree.c */
745 lang_print_xnode (file, node, indent)
746 FILE *file __attribute ((__unused__));
747 tree node __attribute ((__unused__));
748 int indent __attribute ((__unused__));
752 /* Return the typed-based alias set for T, which may be an expression
753 or a type. Return -1 if we don't do anything special. */
756 lang_get_alias_set (t)
757 tree t ATTRIBUTE_UNUSED;