1 /* Multiple source language support for GDB.
3 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
4 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
6 Contributed by the Department of Computer Science at the State University
7 of New York at Buffalo.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This file contains functions that return things that are specific
27 to languages. Each function should examine current_language if necessary,
28 and return the appropriate result. */
30 /* FIXME: Most of these would be better organized as macros which
31 return data out of a "language-specific" struct pointer that is set
32 whenever the working language changes. That would be a lot faster. */
36 #include "gdb_string.h"
42 #include "expression.h"
45 #include "parser-defs.h"
49 extern void _initialize_language (void);
51 static void show_language_command (char *, int);
53 static void set_language_command (char *, int);
55 static void show_type_command (char *, int);
57 static void set_type_command (char *, int);
59 static void show_range_command (char *, int);
61 static void set_range_command (char *, int);
63 static void show_case_command (char *, int);
65 static void set_case_command (char *, int);
67 static void set_case_str (void);
69 static void set_range_str (void);
71 static void set_type_str (void);
73 static void set_lang_str (void);
75 static void unk_lang_error (char *);
77 static int unk_lang_parser (void);
79 static void show_check (char *, int);
81 static void set_check (char *, int);
83 static void set_type_range_case (void);
85 static void unk_lang_emit_char (int c, struct ui_file *stream, int quoter);
87 static void unk_lang_printchar (int c, struct ui_file *stream);
89 static struct type *unk_lang_create_fundamental_type (struct objfile *, int);
91 static void unk_lang_print_type (struct type *, char *, struct ui_file *,
94 static int unk_lang_val_print (struct type *, char *, int, CORE_ADDR,
95 struct ui_file *, int, int, int,
96 enum val_prettyprint);
98 static int unk_lang_value_print (struct value *, struct ui_file *, int, enum val_prettyprint);
100 static CORE_ADDR unk_lang_trampoline (CORE_ADDR pc);
102 /* Forward declaration */
103 extern const struct language_defn unknown_language_defn;
105 /* The current (default at startup) state of type and range checking.
106 (If the modes are set to "auto", though, these are changed based
107 on the default language at startup, and then again based on the
108 language of the first source file. */
110 enum range_mode range_mode = range_mode_auto;
111 enum range_check range_check = range_check_off;
112 enum type_mode type_mode = type_mode_auto;
113 enum type_check type_check = type_check_off;
114 enum case_mode case_mode = case_mode_auto;
115 enum case_sensitivity case_sensitivity = case_sensitive_on;
117 /* The current language and language_mode (see language.h) */
119 const struct language_defn *current_language = &unknown_language_defn;
120 enum language_mode language_mode = language_mode_auto;
122 /* The language that the user expects to be typing in (the language
123 of main(), or the last language we notified them about, or C). */
125 const struct language_defn *expected_language;
127 /* The list of supported languages. The list itself is malloc'd. */
129 static const struct language_defn **languages;
130 static unsigned languages_size;
131 static unsigned languages_allocsize;
132 #define DEFAULT_ALLOCSIZE 4
134 /* The "set language/type/range" commands all put stuff in these
135 buffers. This is to make them work as set/show commands. The
136 user's string is copied here, then the set_* commands look at
137 them and update them to something that looks nice when it is
140 static char *language;
143 static char *case_sensitive;
145 /* Warning issued when current_language and the language of the current
146 frame do not match. */
147 char lang_frame_mismatch_warn[] =
148 "Warning: the current language does not match this frame.";
150 /* This page contains the functions corresponding to GDB commands
151 and their helpers. */
153 /* Show command. Display a warning if the language set
154 does not match the frame. */
156 show_language_command (char *ignore, int from_tty)
158 enum language flang; /* The language of the current frame */
160 flang = get_frame_language ();
161 if (flang != language_unknown &&
162 language_mode == language_mode_manual &&
163 current_language->la_language != flang)
164 printf_filtered ("%s\n", lang_frame_mismatch_warn);
167 /* Set command. Change the current working language. */
169 set_language_command (char *ignore, int from_tty)
175 if (!language || !language[0])
177 printf_unfiltered ("The currently understood settings are:\n\n");
178 printf_unfiltered ("local or auto Automatic setting based on source file\n");
180 for (i = 0; i < languages_size; ++i)
182 /* Already dealt with these above. */
183 if (languages[i]->la_language == language_unknown
184 || languages[i]->la_language == language_auto)
187 /* FIXME for now assume that the human-readable name is just
188 a capitalization of the internal name. */
189 printf_unfiltered ("%-16s Use the %c%s language\n",
190 languages[i]->la_name,
191 /* Capitalize first letter of language
193 toupper (languages[i]->la_name[0]),
194 languages[i]->la_name + 1);
196 /* Restore the silly string. */
197 set_language (current_language->la_language);
201 /* Search the list of languages for a match. */
202 for (i = 0; i < languages_size; i++)
204 if (strcmp (languages[i]->la_name, language) == 0)
206 /* Found it! Go into manual mode, and use this language. */
207 if (languages[i]->la_language == language_auto)
209 /* Enter auto mode. Set to the current frame's language, if known. */
210 language_mode = language_mode_auto;
211 flang = get_frame_language ();
212 if (flang != language_unknown)
213 set_language (flang);
214 expected_language = current_language;
219 /* Enter manual mode. Set the specified language. */
220 language_mode = language_mode_manual;
221 current_language = languages[i];
222 set_type_range_case ();
224 expected_language = current_language;
230 /* Reset the language (esp. the global string "language") to the
232 err_lang = savestring (language, strlen (language));
233 make_cleanup (xfree, err_lang); /* Free it after error */
234 set_language (current_language->la_language);
235 error ("Unknown language `%s'.", err_lang);
238 /* Show command. Display a warning if the type setting does
239 not match the current language. */
241 show_type_command (char *ignore, int from_tty)
243 if (type_check != current_language->la_type_check)
245 "Warning: the current type check setting does not match the language.\n");
248 /* Set command. Change the setting for type checking. */
250 set_type_command (char *ignore, int from_tty)
252 if (strcmp (type, "on") == 0)
254 type_check = type_check_on;
255 type_mode = type_mode_manual;
257 else if (strcmp (type, "warn") == 0)
259 type_check = type_check_warn;
260 type_mode = type_mode_manual;
262 else if (strcmp (type, "off") == 0)
264 type_check = type_check_off;
265 type_mode = type_mode_manual;
267 else if (strcmp (type, "auto") == 0)
269 type_mode = type_mode_auto;
270 set_type_range_case ();
271 /* Avoid hitting the set_type_str call below. We
272 did it in set_type_range_case. */
277 warning ("Unrecognized type check setting: \"%s\"", type);
280 show_type_command ((char *) NULL, from_tty);
283 /* Show command. Display a warning if the range setting does
284 not match the current language. */
286 show_range_command (char *ignore, int from_tty)
289 if (range_check != current_language->la_range_check)
291 "Warning: the current range check setting does not match the language.\n");
294 /* Set command. Change the setting for range checking. */
296 set_range_command (char *ignore, int from_tty)
298 if (strcmp (range, "on") == 0)
300 range_check = range_check_on;
301 range_mode = range_mode_manual;
303 else if (strcmp (range, "warn") == 0)
305 range_check = range_check_warn;
306 range_mode = range_mode_manual;
308 else if (strcmp (range, "off") == 0)
310 range_check = range_check_off;
311 range_mode = range_mode_manual;
313 else if (strcmp (range, "auto") == 0)
315 range_mode = range_mode_auto;
316 set_type_range_case ();
317 /* Avoid hitting the set_range_str call below. We
318 did it in set_type_range_case. */
323 warning ("Unrecognized range check setting: \"%s\"", range);
326 show_range_command ((char *) 0, from_tty);
329 /* Show command. Display a warning if the case sensitivity setting does
330 not match the current language. */
332 show_case_command (char *ignore, int from_tty)
334 if (case_sensitivity != current_language->la_case_sensitivity)
336 "Warning: the current case sensitivity setting does not match the language.\n");
339 /* Set command. Change the setting for case sensitivity. */
341 set_case_command (char *ignore, int from_tty)
343 if (DEPRECATED_STREQ (case_sensitive, "on"))
345 case_sensitivity = case_sensitive_on;
346 case_mode = case_mode_manual;
348 else if (DEPRECATED_STREQ (case_sensitive, "off"))
350 case_sensitivity = case_sensitive_off;
351 case_mode = case_mode_manual;
353 else if (DEPRECATED_STREQ (case_sensitive, "auto"))
355 case_mode = case_mode_auto;
356 set_type_range_case ();
357 /* Avoid hitting the set_case_str call below. We
358 did it in set_type_range_case. */
363 warning ("Unrecognized case-sensitive setting: \"%s\"", case_sensitive);
366 show_case_command ((char *) NULL, from_tty);
369 /* Set the status of range and type checking and case sensitivity based on
370 the current modes and the current language.
371 If SHOW is non-zero, then print out the current language,
372 type and range checking status. */
374 set_type_range_case (void)
377 if (range_mode == range_mode_auto)
378 range_check = current_language->la_range_check;
380 if (type_mode == type_mode_auto)
381 type_check = current_language->la_type_check;
383 if (case_mode == case_mode_auto)
384 case_sensitivity = current_language->la_case_sensitivity;
391 /* Set current language to (enum language) LANG. Returns previous language. */
394 set_language (enum language lang)
397 enum language prev_language;
399 prev_language = current_language->la_language;
401 for (i = 0; i < languages_size; i++)
403 if (languages[i]->la_language == lang)
405 current_language = languages[i];
406 set_type_range_case ();
412 return prev_language;
415 /* This page contains functions that update the global vars
416 language, type and range. */
424 if (language_mode == language_mode_auto)
425 prefix = "auto; currently ";
427 language = concat (prefix, current_language->la_name, NULL);
433 char *tmp = NULL, *prefix = "";
437 if (type_mode == type_mode_auto)
438 prefix = "auto; currently ";
448 case type_check_warn:
452 error ("Unrecognized type check setting.");
455 type = concat (prefix, tmp, NULL);
461 char *tmp, *pref = "";
463 if (range_mode == range_mode_auto)
464 pref = "auto; currently ";
471 case range_check_off:
474 case range_check_warn:
478 error ("Unrecognized range check setting.");
483 range = concat (pref, tmp, NULL);
489 char *tmp = NULL, *prefix = "";
491 if (case_mode==case_mode_auto)
492 prefix = "auto; currently ";
494 switch (case_sensitivity)
496 case case_sensitive_on:
499 case case_sensitive_off:
503 error ("Unrecognized case-sensitive setting.");
506 xfree (case_sensitive);
507 case_sensitive = concat (prefix, tmp, NULL);
510 /* Print out the current language settings: language, range and
511 type checking. If QUIETLY, print only what has changed. */
514 language_info (int quietly)
516 if (quietly && expected_language == current_language)
519 expected_language = current_language;
520 printf_unfiltered ("Current language: %s\n", language);
521 show_language_command ((char *) 0, 1);
525 printf_unfiltered ("Type checking: %s\n", type);
526 show_type_command ((char *) 0, 1);
527 printf_unfiltered ("Range checking: %s\n", range);
528 show_range_command ((char *) 0, 1);
529 printf_unfiltered ("Case sensitivity: %s\n", case_sensitive);
530 show_case_command ((char *) 0, 1);
534 /* Return the result of a binary operation. */
536 #if 0 /* Currently unused */
539 binop_result_type (struct value *v1, struct value *v2)
542 struct type *t1 = check_typedef (VALUE_TYPE (v1));
543 struct type *t2 = check_typedef (VALUE_TYPE (v2));
545 int l1 = TYPE_LENGTH (t1);
546 int l2 = TYPE_LENGTH (t2);
548 switch (current_language->la_language)
553 if (TYPE_CODE (t1) == TYPE_CODE_FLT)
554 return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
555 VALUE_TYPE (v2) : VALUE_TYPE (v1);
556 else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
557 return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
558 VALUE_TYPE (v1) : VALUE_TYPE (v2);
559 else if (TYPE_UNSIGNED (t1) && l1 > l2)
560 return VALUE_TYPE (v1);
561 else if (TYPE_UNSIGNED (t2) && l2 > l1)
562 return VALUE_TYPE (v2);
563 else /* Both are signed. Result is the longer type */
564 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
567 /* If we are doing type-checking, l1 should equal l2, so this is
569 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
572 internal_error (__FILE__, __LINE__, "failed internal consistency check");
573 return (struct type *) 0; /* For lint */
578 /* This page contains functions that are used in type/range checking.
579 They all return zero if the type/range check fails.
581 It is hoped that these will make extending GDB to parse different
582 languages a little easier. These are primarily used in eval.c when
583 evaluating expressions and making sure that their types are correct.
584 Instead of having a mess of conjucted/disjuncted expressions in an "if",
585 the ideas of type can be wrapped up in the following functions.
587 Note that some of them are not currently dependent upon which language
588 is currently being parsed. For example, floats are the same in
589 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
590 TYPE_CODE_FLT), while booleans are different. */
592 /* Returns non-zero if its argument is a simple type. This is the same for
593 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
594 and thus will never cause the failure of the test. */
596 simple_type (struct type *type)
598 CHECK_TYPEDEF (type);
599 switch (TYPE_CODE (type))
605 case TYPE_CODE_RANGE:
614 /* Returns non-zero if its argument is of an ordered type.
615 An ordered type is one in which the elements can be tested for the
616 properties of "greater than", "less than", etc, or for which the
617 operations "increment" or "decrement" make sense. */
619 ordered_type (struct type *type)
621 CHECK_TYPEDEF (type);
622 switch (TYPE_CODE (type))
628 case TYPE_CODE_RANGE:
636 /* Returns non-zero if the two types are the same */
638 same_type (struct type *arg1, struct type *arg2)
640 CHECK_TYPEDEF (type);
641 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
642 /* One is structured and one isn't */
644 else if (structured_type (arg1) && structured_type (arg2))
646 else if (numeric_type (arg1) && numeric_type (arg2))
647 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
648 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
654 /* Returns non-zero if the type is integral */
656 integral_type (struct type *type)
658 CHECK_TYPEDEF (type);
659 switch (current_language->la_language)
664 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
665 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
667 case language_pascal:
668 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
670 error ("Language not supported.");
674 /* Returns non-zero if the value is numeric */
676 numeric_type (struct type *type)
678 CHECK_TYPEDEF (type);
679 switch (TYPE_CODE (type))
690 /* Returns non-zero if the value is a character type */
692 character_type (struct type *type)
694 CHECK_TYPEDEF (type);
695 switch (current_language->la_language)
698 case language_pascal:
699 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
704 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
705 TYPE_LENGTH (type) == sizeof (char)
712 /* Returns non-zero if the value is a string type */
714 string_type (struct type *type)
716 CHECK_TYPEDEF (type);
717 switch (current_language->la_language)
720 case language_pascal:
721 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
726 /* C does not have distinct string type. */
733 /* Returns non-zero if the value is a boolean type */
735 boolean_type (struct type *type)
737 CHECK_TYPEDEF (type);
738 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
740 switch (current_language->la_language)
745 /* Might be more cleanly handled by having a
746 TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
747 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
748 if (TYPE_CODE (type) == TYPE_CODE_INT)
756 /* Returns non-zero if the value is a floating-point type */
758 float_type (struct type *type)
760 CHECK_TYPEDEF (type);
761 return TYPE_CODE (type) == TYPE_CODE_FLT;
764 /* Returns non-zero if the value is a pointer type */
766 pointer_type (struct type *type)
768 return TYPE_CODE (type) == TYPE_CODE_PTR ||
769 TYPE_CODE (type) == TYPE_CODE_REF;
772 /* Returns non-zero if the value is a structured type */
774 structured_type (struct type *type)
776 CHECK_TYPEDEF (type);
777 switch (current_language->la_language)
782 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
783 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
784 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
785 case language_pascal:
786 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
787 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
788 (TYPE_CODE(type) == TYPE_CODE_SET) ||
789 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
791 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
792 (TYPE_CODE (type) == TYPE_CODE_SET) ||
793 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
801 lang_bool_type (void)
805 switch (current_language->la_language)
807 case language_fortran:
808 sym = lookup_symbol ("logical", NULL, VAR_DOMAIN, NULL, NULL);
811 type = SYMBOL_TYPE (sym);
812 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
815 return builtin_type_f_logical_s2;
817 case language_pascal:
818 if (current_language->la_language==language_cplus)
819 {sym = lookup_symbol ("bool", NULL, VAR_DOMAIN, NULL, NULL);}
821 {sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);}
824 type = SYMBOL_TYPE (sym);
825 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
828 return builtin_type_bool;
830 sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);
833 type = SYMBOL_TYPE (sym);
834 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
837 return java_boolean_type;
839 return builtin_type_int;
843 /* This page contains functions that return info about
844 (struct value) values used in GDB. */
846 /* Returns non-zero if the value VAL represents a true value. */
848 value_true (struct value *val)
850 /* It is possible that we should have some sort of error if a non-boolean
851 value is used in this context. Possibly dependent on some kind of
852 "boolean-checking" option like range checking. But it should probably
853 not depend on the language except insofar as is necessary to identify
854 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
855 should be an error, probably). */
856 return !value_logical_not (val);
859 /* This page contains functions for the printing out of
860 error messages that occur during type- and range-
863 /* These are called when a language fails a type- or range-check. The
864 first argument should be a printf()-style format string, and the
865 rest of the arguments should be its arguments. If
866 [type|range]_check is [type|range]_check_on, an error is printed;
867 if [type|range]_check_warn, a warning; otherwise just the
871 type_error (const char *string,...)
874 va_start (args, string);
878 case type_check_warn:
879 vwarning (string, args);
882 verror (string, args);
885 /* FIXME: cagney/2002-01-30: Should this function print anything
886 when type error is off? */
887 vfprintf_filtered (gdb_stderr, string, args);
888 fprintf_filtered (gdb_stderr, "\n");
891 internal_error (__FILE__, __LINE__, "bad switch");
897 range_error (const char *string,...)
900 va_start (args, string);
904 case range_check_warn:
905 vwarning (string, args);
908 verror (string, args);
910 case range_check_off:
911 /* FIXME: cagney/2002-01-30: Should this function print anything
912 when range error is off? */
913 vfprintf_filtered (gdb_stderr, string, args);
914 fprintf_filtered (gdb_stderr, "\n");
917 internal_error (__FILE__, __LINE__, "bad switch");
923 /* This page contains miscellaneous functions */
925 /* Return the language enum for a given language string. */
928 language_enum (char *str)
932 for (i = 0; i < languages_size; i++)
933 if (DEPRECATED_STREQ (languages[i]->la_name, str))
934 return languages[i]->la_language;
936 return language_unknown;
939 /* Return the language struct for a given language enum. */
941 const struct language_defn *
942 language_def (enum language lang)
946 for (i = 0; i < languages_size; i++)
948 if (languages[i]->la_language == lang)
956 /* Return the language as a string */
958 language_str (enum language lang)
962 for (i = 0; i < languages_size; i++)
964 if (languages[i]->la_language == lang)
966 return languages[i]->la_name;
973 set_check (char *ignore, int from_tty)
976 "\"set check\" must be followed by the name of a check subcommand.\n");
977 help_list (setchecklist, "set check ", -1, gdb_stdout);
981 show_check (char *ignore, int from_tty)
983 cmd_show_list (showchecklist, from_tty, "");
986 /* Add a language to the set of known languages. */
989 add_language (const struct language_defn *lang)
991 if (lang->la_magic != LANG_MAGIC)
993 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
995 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1000 languages_allocsize = DEFAULT_ALLOCSIZE;
1001 languages = (const struct language_defn **) xmalloc
1002 (languages_allocsize * sizeof (*languages));
1004 if (languages_size >= languages_allocsize)
1006 languages_allocsize *= 2;
1007 languages = (const struct language_defn **) xrealloc ((char *) languages,
1008 languages_allocsize * sizeof (*languages));
1010 languages[languages_size++] = lang;
1013 /* Iterate through all registered languages looking for and calling
1014 any non-NULL struct language_defn.skip_trampoline() functions.
1015 Return the result from the first that returns non-zero, or 0 if all
1018 skip_language_trampoline (CORE_ADDR pc)
1022 for (i = 0; i < languages_size; i++)
1024 if (languages[i]->skip_trampoline)
1026 CORE_ADDR real_pc = (languages[i]->skip_trampoline) (pc);
1035 /* Return demangled language symbol, or NULL.
1036 FIXME: Options are only useful for certain languages and ignored
1037 by others, so it would be better to remove them here and have a
1038 more flexible demangler for the languages that need it.
1039 FIXME: Sometimes the demangler is invoked when we don't know the
1040 language, so we can't use this everywhere. */
1042 language_demangle (const struct language_defn *current_language,
1043 const char *mangled, int options)
1045 if (current_language != NULL && current_language->la_demangle)
1046 return current_language->la_demangle (mangled, options);
1050 /* Return class name from physname or NULL. */
1052 language_class_name_from_physname (const struct language_defn *current_language,
1053 const char *physname)
1055 if (current_language != NULL && current_language->la_class_name_from_physname)
1056 return current_language->la_class_name_from_physname (physname);
1060 /* Return the default string containing the list of characters
1061 delimiting words. This is a reasonable default value that
1062 most languages should be able to use. */
1065 default_word_break_characters (void)
1067 return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1070 /* Define the language that is no language. */
1073 unk_lang_parser (void)
1079 unk_lang_error (char *msg)
1081 error ("Attempted to parse an expression with unknown language");
1085 unk_lang_emit_char (int c, struct ui_file *stream, int quoter)
1087 error ("internal error - unimplemented function unk_lang_emit_char called.");
1091 unk_lang_printchar (int c, struct ui_file *stream)
1093 error ("internal error - unimplemented function unk_lang_printchar called.");
1097 unk_lang_printstr (struct ui_file *stream, const bfd_byte *string,
1098 unsigned int length, int width, int force_ellipses)
1100 error ("internal error - unimplemented function unk_lang_printstr called.");
1103 static struct type *
1104 unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
1106 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1110 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1111 int show, int level)
1113 error ("internal error - unimplemented function unk_lang_print_type called.");
1117 unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
1118 CORE_ADDR address, struct ui_file *stream, int format,
1119 int deref_ref, int recurse, enum val_prettyprint pretty)
1121 error ("internal error - unimplemented function unk_lang_val_print called.");
1125 unk_lang_value_print (struct value *val, struct ui_file *stream, int format,
1126 enum val_prettyprint pretty)
1128 error ("internal error - unimplemented function unk_lang_value_print called.");
1131 static CORE_ADDR unk_lang_trampoline (CORE_ADDR pc)
1136 /* Unknown languages just use the cplus demangler. */
1137 static char *unk_lang_demangle (const char *mangled, int options)
1139 return cplus_demangle (mangled, options);
1142 static char *unk_lang_class_name (const char *mangled)
1147 static const struct op_print unk_op_print_tab[] =
1149 {NULL, OP_NULL, PREC_NULL, 0}
1153 unknown_language_arch_info (struct gdbarch *gdbarch,
1154 struct language_arch_info *lai)
1156 lai->string_char_type = builtin_type (gdbarch)->builtin_char;
1157 lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
1161 const struct language_defn unknown_language_defn =
1170 &exp_descriptor_standard,
1174 unk_lang_printchar, /* Print character constant */
1177 unk_lang_create_fundamental_type,
1178 unk_lang_print_type, /* Print a type using appropriate syntax */
1179 unk_lang_val_print, /* Print a value using appropriate syntax */
1180 unk_lang_value_print, /* Print a top-level value */
1181 unk_lang_trampoline, /* Language specific skip_trampoline */
1182 value_of_this, /* value_of_this */
1183 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1184 basic_lookup_transparent_type,/* lookup_transparent_type */
1185 unk_lang_demangle, /* Language specific symbol demangler */
1186 unk_lang_class_name, /* Language specific class_name_from_physname */
1187 unk_op_print_tab, /* expression operators for printing */
1188 1, /* c-style arrays */
1189 0, /* String lower bound */
1191 default_word_break_characters,
1192 unknown_language_arch_info, /* la_language_arch_info. */
1196 /* These two structs define fake entries for the "local" and "auto" options. */
1197 const struct language_defn auto_language_defn =
1206 &exp_descriptor_standard,
1210 unk_lang_printchar, /* Print character constant */
1213 unk_lang_create_fundamental_type,
1214 unk_lang_print_type, /* Print a type using appropriate syntax */
1215 unk_lang_val_print, /* Print a value using appropriate syntax */
1216 unk_lang_value_print, /* Print a top-level value */
1217 unk_lang_trampoline, /* Language specific skip_trampoline */
1218 value_of_this, /* value_of_this */
1219 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1220 basic_lookup_transparent_type,/* lookup_transparent_type */
1221 unk_lang_demangle, /* Language specific symbol demangler */
1222 unk_lang_class_name, /* Language specific class_name_from_physname */
1223 unk_op_print_tab, /* expression operators for printing */
1224 1, /* c-style arrays */
1225 0, /* String lower bound */
1227 default_word_break_characters,
1228 unknown_language_arch_info, /* la_language_arch_info. */
1232 const struct language_defn local_language_defn =
1241 &exp_descriptor_standard,
1245 unk_lang_printchar, /* Print character constant */
1248 unk_lang_create_fundamental_type,
1249 unk_lang_print_type, /* Print a type using appropriate syntax */
1250 unk_lang_val_print, /* Print a value using appropriate syntax */
1251 unk_lang_value_print, /* Print a top-level value */
1252 unk_lang_trampoline, /* Language specific skip_trampoline */
1253 value_of_this, /* value_of_this */
1254 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1255 basic_lookup_transparent_type,/* lookup_transparent_type */
1256 unk_lang_demangle, /* Language specific symbol demangler */
1257 unk_lang_class_name, /* Language specific class_name_from_physname */
1258 unk_op_print_tab, /* expression operators for printing */
1259 1, /* c-style arrays */
1260 0, /* String lower bound */
1262 default_word_break_characters,
1263 unknown_language_arch_info, /* la_language_arch_info. */
1267 /* Per-architecture language information. */
1269 static struct gdbarch_data *language_gdbarch_data;
1271 struct language_gdbarch
1273 /* A vector of per-language per-architecture info. Indexed by "enum
1275 struct language_arch_info arch_info[nr_languages];
1279 language_gdbarch_post_init (struct gdbarch *gdbarch)
1281 struct language_gdbarch *l;
1284 l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
1285 for (i = 0; i < languages_size; i++)
1287 if (languages[i] != NULL
1288 && languages[i]->la_language_arch_info != NULL)
1289 languages[i]->la_language_arch_info
1290 (gdbarch, l->arch_info + languages[i]->la_language);
1296 language_string_char_type (const struct language_defn *la,
1297 struct gdbarch *gdbarch)
1299 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1300 language_gdbarch_data);
1301 if (ld->arch_info[la->la_language].string_char_type != NULL)
1302 return ld->arch_info[la->la_language].string_char_type;
1304 return (*la->string_char_type);
1308 language_lookup_primitive_type_by_name (const struct language_defn *la,
1309 struct gdbarch *gdbarch,
1312 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1313 language_gdbarch_data);
1314 if (ld->arch_info[la->la_language].primitive_type_vector != NULL)
1316 struct type *const *p;
1317 for (p = ld->arch_info[la->la_language].primitive_type_vector;
1321 if (strcmp (TYPE_NAME (*p), name) == 0)
1327 struct type **const *p;
1328 for (p = current_language->la_builtin_type_vector; *p != NULL; p++)
1330 if (strcmp (TYPE_NAME (**p), name) == 0)
1337 /* Initialize the language routines */
1340 _initialize_language (void)
1342 struct cmd_list_element *set, *show;
1344 language_gdbarch_data
1345 = gdbarch_data_register_post_init (language_gdbarch_post_init);
1347 /* GDB commands for language specific stuff */
1349 set = add_set_cmd ("language", class_support, var_string_noescape,
1351 "Set the current source language.",
1353 show = deprecated_add_show_from_set (set, &showlist);
1354 set_cmd_cfunc (set, set_language_command);
1355 set_cmd_cfunc (show, show_language_command);
1357 add_prefix_cmd ("check", no_class, set_check,
1358 "Set the status of the type/range checker.",
1359 &setchecklist, "set check ", 0, &setlist);
1360 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1361 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1363 add_prefix_cmd ("check", no_class, show_check,
1364 "Show the status of the type/range checker.",
1365 &showchecklist, "show check ", 0, &showlist);
1366 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1367 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1369 set = add_set_cmd ("type", class_support, var_string_noescape,
1371 "Set type checking. (on/warn/off/auto)",
1373 show = deprecated_add_show_from_set (set, &showchecklist);
1374 set_cmd_cfunc (set, set_type_command);
1375 set_cmd_cfunc (show, show_type_command);
1377 set = add_set_cmd ("range", class_support, var_string_noescape,
1379 "Set range checking. (on/warn/off/auto)",
1381 show = deprecated_add_show_from_set (set, &showchecklist);
1382 set_cmd_cfunc (set, set_range_command);
1383 set_cmd_cfunc (show, show_range_command);
1385 set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
1386 (char *) &case_sensitive,
1387 "Set case sensitivity in name search. (on/off/auto)\n\
1388 For Fortran the default is off; for other languages the default is on.",
1390 show = deprecated_add_show_from_set (set, &showlist);
1391 set_cmd_cfunc (set, set_case_command);
1392 set_cmd_cfunc (show, show_case_command);
1394 add_language (&unknown_language_defn);
1395 add_language (&local_language_defn);
1396 add_language (&auto_language_defn);
1398 language = savestring ("auto", strlen ("auto"));
1399 type = savestring ("auto", strlen ("auto"));
1400 range = savestring ("auto", strlen ("auto"));
1401 case_sensitive = savestring ("auto",strlen ("auto"));
1403 /* Have the above take effect */
1404 set_language (language_auto);