1 /* Multiple source language support for GDB.
3 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
4 2001, 2002, 2003, 2004 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 void unk_lang_printstr (struct ui_file * stream, char *string,
90 unsigned int length, int width,
93 static struct type *unk_lang_create_fundamental_type (struct objfile *, int);
95 static void unk_lang_print_type (struct type *, char *, struct ui_file *,
98 static int unk_lang_val_print (struct type *, char *, int, CORE_ADDR,
99 struct ui_file *, int, int, int,
100 enum val_prettyprint);
102 static int unk_lang_value_print (struct value *, struct ui_file *, int, enum val_prettyprint);
104 static CORE_ADDR unk_lang_trampoline (CORE_ADDR pc);
106 /* Forward declaration */
107 extern const struct language_defn unknown_language_defn;
109 /* The current (default at startup) state of type and range checking.
110 (If the modes are set to "auto", though, these are changed based
111 on the default language at startup, and then again based on the
112 language of the first source file. */
114 enum range_mode range_mode = range_mode_auto;
115 enum range_check range_check = range_check_off;
116 enum type_mode type_mode = type_mode_auto;
117 enum type_check type_check = type_check_off;
118 enum case_mode case_mode = case_mode_auto;
119 enum case_sensitivity case_sensitivity = case_sensitive_on;
121 /* The current language and language_mode (see language.h) */
123 const struct language_defn *current_language = &unknown_language_defn;
124 enum language_mode language_mode = language_mode_auto;
126 /* The language that the user expects to be typing in (the language
127 of main(), or the last language we notified them about, or C). */
129 const struct language_defn *expected_language;
131 /* The list of supported languages. The list itself is malloc'd. */
133 static const struct language_defn **languages;
134 static unsigned languages_size;
135 static unsigned languages_allocsize;
136 #define DEFAULT_ALLOCSIZE 4
138 /* The "set language/type/range" commands all put stuff in these
139 buffers. This is to make them work as set/show commands. The
140 user's string is copied here, then the set_* commands look at
141 them and update them to something that looks nice when it is
144 static char *language;
147 static char *case_sensitive;
149 /* Warning issued when current_language and the language of the current
150 frame do not match. */
151 char lang_frame_mismatch_warn[] =
152 "Warning: the current language does not match this frame.";
154 /* This page contains the functions corresponding to GDB commands
155 and their helpers. */
157 /* Show command. Display a warning if the language set
158 does not match the frame. */
160 show_language_command (char *ignore, int from_tty)
162 enum language flang; /* The language of the current frame */
164 flang = get_frame_language ();
165 if (flang != language_unknown &&
166 language_mode == language_mode_manual &&
167 current_language->la_language != flang)
168 printf_filtered ("%s\n", lang_frame_mismatch_warn);
171 /* Set command. Change the current working language. */
173 set_language_command (char *ignore, int from_tty)
179 if (!language || !language[0])
181 printf_unfiltered ("The currently understood settings are:\n\n");
182 printf_unfiltered ("local or auto Automatic setting based on source file\n");
184 for (i = 0; i < languages_size; ++i)
186 /* Already dealt with these above. */
187 if (languages[i]->la_language == language_unknown
188 || languages[i]->la_language == language_auto)
191 /* FIXME for now assume that the human-readable name is just
192 a capitalization of the internal name. */
193 printf_unfiltered ("%-16s Use the %c%s language\n",
194 languages[i]->la_name,
195 /* Capitalize first letter of language
197 toupper (languages[i]->la_name[0]),
198 languages[i]->la_name + 1);
200 /* Restore the silly string. */
201 set_language (current_language->la_language);
205 /* Search the list of languages for a match. */
206 for (i = 0; i < languages_size; i++)
208 if (strcmp (languages[i]->la_name, language) == 0)
210 /* Found it! Go into manual mode, and use this language. */
211 if (languages[i]->la_language == language_auto)
213 /* Enter auto mode. Set to the current frame's language, if known. */
214 language_mode = language_mode_auto;
215 flang = get_frame_language ();
216 if (flang != language_unknown)
217 set_language (flang);
218 expected_language = current_language;
223 /* Enter manual mode. Set the specified language. */
224 language_mode = language_mode_manual;
225 current_language = languages[i];
226 set_type_range_case ();
228 expected_language = current_language;
234 /* Reset the language (esp. the global string "language") to the
236 err_lang = savestring (language, strlen (language));
237 make_cleanup (xfree, err_lang); /* Free it after error */
238 set_language (current_language->la_language);
239 error ("Unknown language `%s'.", err_lang);
242 /* Show command. Display a warning if the type setting does
243 not match the current language. */
245 show_type_command (char *ignore, int from_tty)
247 if (type_check != current_language->la_type_check)
249 "Warning: the current type check setting does not match the language.\n");
252 /* Set command. Change the setting for type checking. */
254 set_type_command (char *ignore, int from_tty)
256 if (strcmp (type, "on") == 0)
258 type_check = type_check_on;
259 type_mode = type_mode_manual;
261 else if (strcmp (type, "warn") == 0)
263 type_check = type_check_warn;
264 type_mode = type_mode_manual;
266 else if (strcmp (type, "off") == 0)
268 type_check = type_check_off;
269 type_mode = type_mode_manual;
271 else if (strcmp (type, "auto") == 0)
273 type_mode = type_mode_auto;
274 set_type_range_case ();
275 /* Avoid hitting the set_type_str call below. We
276 did it in set_type_range_case. */
281 warning ("Unrecognized type check setting: \"%s\"", type);
284 show_type_command ((char *) NULL, from_tty);
287 /* Show command. Display a warning if the range setting does
288 not match the current language. */
290 show_range_command (char *ignore, int from_tty)
293 if (range_check != current_language->la_range_check)
295 "Warning: the current range check setting does not match the language.\n");
298 /* Set command. Change the setting for range checking. */
300 set_range_command (char *ignore, int from_tty)
302 if (strcmp (range, "on") == 0)
304 range_check = range_check_on;
305 range_mode = range_mode_manual;
307 else if (strcmp (range, "warn") == 0)
309 range_check = range_check_warn;
310 range_mode = range_mode_manual;
312 else if (strcmp (range, "off") == 0)
314 range_check = range_check_off;
315 range_mode = range_mode_manual;
317 else if (strcmp (range, "auto") == 0)
319 range_mode = range_mode_auto;
320 set_type_range_case ();
321 /* Avoid hitting the set_range_str call below. We
322 did it in set_type_range_case. */
327 warning ("Unrecognized range check setting: \"%s\"", range);
330 show_range_command ((char *) 0, from_tty);
333 /* Show command. Display a warning if the case sensitivity setting does
334 not match the current language. */
336 show_case_command (char *ignore, int from_tty)
338 if (case_sensitivity != current_language->la_case_sensitivity)
340 "Warning: the current case sensitivity setting does not match the language.\n");
343 /* Set command. Change the setting for case sensitivity. */
345 set_case_command (char *ignore, int from_tty)
347 if (DEPRECATED_STREQ (case_sensitive, "on"))
349 case_sensitivity = case_sensitive_on;
350 case_mode = case_mode_manual;
352 else if (DEPRECATED_STREQ (case_sensitive, "off"))
354 case_sensitivity = case_sensitive_off;
355 case_mode = case_mode_manual;
357 else if (DEPRECATED_STREQ (case_sensitive, "auto"))
359 case_mode = case_mode_auto;
360 set_type_range_case ();
361 /* Avoid hitting the set_case_str call below. We
362 did it in set_type_range_case. */
367 warning ("Unrecognized case-sensitive setting: \"%s\"", case_sensitive);
370 show_case_command ((char *) NULL, from_tty);
373 /* Set the status of range and type checking and case sensitivity based on
374 the current modes and the current language.
375 If SHOW is non-zero, then print out the current language,
376 type and range checking status. */
378 set_type_range_case (void)
381 if (range_mode == range_mode_auto)
382 range_check = current_language->la_range_check;
384 if (type_mode == type_mode_auto)
385 type_check = current_language->la_type_check;
387 if (case_mode == case_mode_auto)
388 case_sensitivity = current_language->la_case_sensitivity;
395 /* Set current language to (enum language) LANG. Returns previous language. */
398 set_language (enum language lang)
401 enum language prev_language;
403 prev_language = current_language->la_language;
405 for (i = 0; i < languages_size; i++)
407 if (languages[i]->la_language == lang)
409 current_language = languages[i];
410 set_type_range_case ();
416 return prev_language;
419 /* This page contains functions that update the global vars
420 language, type and range. */
428 if (language_mode == language_mode_auto)
429 prefix = "auto; currently ";
431 language = concat (prefix, current_language->la_name, NULL);
437 char *tmp = NULL, *prefix = "";
441 if (type_mode == type_mode_auto)
442 prefix = "auto; currently ";
452 case type_check_warn:
456 error ("Unrecognized type check setting.");
459 type = concat (prefix, tmp, NULL);
465 char *tmp, *pref = "";
467 if (range_mode == range_mode_auto)
468 pref = "auto; currently ";
475 case range_check_off:
478 case range_check_warn:
482 error ("Unrecognized range check setting.");
487 range = concat (pref, tmp, NULL);
493 char *tmp = NULL, *prefix = "";
495 if (case_mode==case_mode_auto)
496 prefix = "auto; currently ";
498 switch (case_sensitivity)
500 case case_sensitive_on:
503 case case_sensitive_off:
507 error ("Unrecognized case-sensitive setting.");
510 xfree (case_sensitive);
511 case_sensitive = concat (prefix, tmp, NULL);
514 /* Print out the current language settings: language, range and
515 type checking. If QUIETLY, print only what has changed. */
518 language_info (int quietly)
520 if (quietly && expected_language == current_language)
523 expected_language = current_language;
524 printf_unfiltered ("Current language: %s\n", language);
525 show_language_command ((char *) 0, 1);
529 printf_unfiltered ("Type checking: %s\n", type);
530 show_type_command ((char *) 0, 1);
531 printf_unfiltered ("Range checking: %s\n", range);
532 show_range_command ((char *) 0, 1);
533 printf_unfiltered ("Case sensitivity: %s\n", case_sensitive);
534 show_case_command ((char *) 0, 1);
538 /* Return the result of a binary operation. */
540 #if 0 /* Currently unused */
543 binop_result_type (struct value *v1, struct value *v2)
546 struct type *t1 = check_typedef (VALUE_TYPE (v1));
547 struct type *t2 = check_typedef (VALUE_TYPE (v2));
549 int l1 = TYPE_LENGTH (t1);
550 int l2 = TYPE_LENGTH (t2);
552 switch (current_language->la_language)
557 if (TYPE_CODE (t1) == TYPE_CODE_FLT)
558 return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
559 VALUE_TYPE (v2) : VALUE_TYPE (v1);
560 else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
561 return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
562 VALUE_TYPE (v1) : VALUE_TYPE (v2);
563 else if (TYPE_UNSIGNED (t1) && l1 > l2)
564 return VALUE_TYPE (v1);
565 else if (TYPE_UNSIGNED (t2) && l2 > l1)
566 return VALUE_TYPE (v2);
567 else /* Both are signed. Result is the longer type */
568 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
571 /* If we are doing type-checking, l1 should equal l2, so this is
573 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
576 internal_error (__FILE__, __LINE__, "failed internal consistency check");
577 return (struct type *) 0; /* For lint */
582 /* This page contains functions that are used in type/range checking.
583 They all return zero if the type/range check fails.
585 It is hoped that these will make extending GDB to parse different
586 languages a little easier. These are primarily used in eval.c when
587 evaluating expressions and making sure that their types are correct.
588 Instead of having a mess of conjucted/disjuncted expressions in an "if",
589 the ideas of type can be wrapped up in the following functions.
591 Note that some of them are not currently dependent upon which language
592 is currently being parsed. For example, floats are the same in
593 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
594 TYPE_CODE_FLT), while booleans are different. */
596 /* Returns non-zero if its argument is a simple type. This is the same for
597 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
598 and thus will never cause the failure of the test. */
600 simple_type (struct type *type)
602 CHECK_TYPEDEF (type);
603 switch (TYPE_CODE (type))
609 case TYPE_CODE_RANGE:
618 /* Returns non-zero if its argument is of an ordered type.
619 An ordered type is one in which the elements can be tested for the
620 properties of "greater than", "less than", etc, or for which the
621 operations "increment" or "decrement" make sense. */
623 ordered_type (struct type *type)
625 CHECK_TYPEDEF (type);
626 switch (TYPE_CODE (type))
632 case TYPE_CODE_RANGE:
640 /* Returns non-zero if the two types are the same */
642 same_type (struct type *arg1, struct type *arg2)
644 CHECK_TYPEDEF (type);
645 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
646 /* One is structured and one isn't */
648 else if (structured_type (arg1) && structured_type (arg2))
650 else if (numeric_type (arg1) && numeric_type (arg2))
651 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
652 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
658 /* Returns non-zero if the type is integral */
660 integral_type (struct type *type)
662 CHECK_TYPEDEF (type);
663 switch (current_language->la_language)
668 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
669 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
671 case language_pascal:
672 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
674 error ("Language not supported.");
678 /* Returns non-zero if the value is numeric */
680 numeric_type (struct type *type)
682 CHECK_TYPEDEF (type);
683 switch (TYPE_CODE (type))
694 /* Returns non-zero if the value is a character type */
696 character_type (struct type *type)
698 CHECK_TYPEDEF (type);
699 switch (current_language->la_language)
702 case language_pascal:
703 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
708 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
709 TYPE_LENGTH (type) == sizeof (char)
716 /* Returns non-zero if the value is a string type */
718 string_type (struct type *type)
720 CHECK_TYPEDEF (type);
721 switch (current_language->la_language)
724 case language_pascal:
725 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
730 /* C does not have distinct string type. */
737 /* Returns non-zero if the value is a boolean type */
739 boolean_type (struct type *type)
741 CHECK_TYPEDEF (type);
742 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
744 switch (current_language->la_language)
749 /* Might be more cleanly handled by having a
750 TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
751 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
752 if (TYPE_CODE (type) == TYPE_CODE_INT)
760 /* Returns non-zero if the value is a floating-point type */
762 float_type (struct type *type)
764 CHECK_TYPEDEF (type);
765 return TYPE_CODE (type) == TYPE_CODE_FLT;
768 /* Returns non-zero if the value is a pointer type */
770 pointer_type (struct type *type)
772 return TYPE_CODE (type) == TYPE_CODE_PTR ||
773 TYPE_CODE (type) == TYPE_CODE_REF;
776 /* Returns non-zero if the value is a structured type */
778 structured_type (struct type *type)
780 CHECK_TYPEDEF (type);
781 switch (current_language->la_language)
786 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
787 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
788 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
789 case language_pascal:
790 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
791 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
792 (TYPE_CODE(type) == TYPE_CODE_SET) ||
793 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
795 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
796 (TYPE_CODE (type) == TYPE_CODE_SET) ||
797 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
805 lang_bool_type (void)
809 switch (current_language->la_language)
811 case language_fortran:
812 sym = lookup_symbol ("logical", NULL, VAR_DOMAIN, NULL, NULL);
815 type = SYMBOL_TYPE (sym);
816 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
819 return builtin_type_f_logical_s2;
821 case language_pascal:
822 if (current_language->la_language==language_cplus)
823 {sym = lookup_symbol ("bool", NULL, VAR_DOMAIN, NULL, NULL);}
825 {sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);}
828 type = SYMBOL_TYPE (sym);
829 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
832 return builtin_type_bool;
834 sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);
837 type = SYMBOL_TYPE (sym);
838 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
841 return java_boolean_type;
843 return builtin_type_int;
847 /* This page contains functions that return info about
848 (struct value) values used in GDB. */
850 /* Returns non-zero if the value VAL represents a true value. */
852 value_true (struct value *val)
854 /* It is possible that we should have some sort of error if a non-boolean
855 value is used in this context. Possibly dependent on some kind of
856 "boolean-checking" option like range checking. But it should probably
857 not depend on the language except insofar as is necessary to identify
858 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
859 should be an error, probably). */
860 return !value_logical_not (val);
863 /* This page contains functions for the printing out of
864 error messages that occur during type- and range-
867 /* These are called when a language fails a type- or range-check. The
868 first argument should be a printf()-style format string, and the
869 rest of the arguments should be its arguments. If
870 [type|range]_check is [type|range]_check_on, an error is printed;
871 if [type|range]_check_warn, a warning; otherwise just the
875 type_error (const char *string,...)
878 va_start (args, string);
882 case type_check_warn:
883 vwarning (string, args);
886 verror (string, args);
889 /* FIXME: cagney/2002-01-30: Should this function print anything
890 when type error is off? */
891 vfprintf_filtered (gdb_stderr, string, args);
892 fprintf_filtered (gdb_stderr, "\n");
895 internal_error (__FILE__, __LINE__, "bad switch");
901 range_error (const char *string,...)
904 va_start (args, string);
908 case range_check_warn:
909 vwarning (string, args);
912 verror (string, args);
914 case range_check_off:
915 /* FIXME: cagney/2002-01-30: Should this function print anything
916 when range error is off? */
917 vfprintf_filtered (gdb_stderr, string, args);
918 fprintf_filtered (gdb_stderr, "\n");
921 internal_error (__FILE__, __LINE__, "bad switch");
927 /* This page contains miscellaneous functions */
929 /* Return the language enum for a given language string. */
932 language_enum (char *str)
936 for (i = 0; i < languages_size; i++)
937 if (DEPRECATED_STREQ (languages[i]->la_name, str))
938 return languages[i]->la_language;
940 return language_unknown;
943 /* Return the language struct for a given language enum. */
945 const struct language_defn *
946 language_def (enum language lang)
950 for (i = 0; i < languages_size; i++)
952 if (languages[i]->la_language == lang)
960 /* Return the language as a string */
962 language_str (enum language lang)
966 for (i = 0; i < languages_size; i++)
968 if (languages[i]->la_language == lang)
970 return languages[i]->la_name;
977 set_check (char *ignore, int from_tty)
980 "\"set check\" must be followed by the name of a check subcommand.\n");
981 help_list (setchecklist, "set check ", -1, gdb_stdout);
985 show_check (char *ignore, int from_tty)
987 cmd_show_list (showchecklist, from_tty, "");
990 /* Add a language to the set of known languages. */
993 add_language (const struct language_defn *lang)
995 if (lang->la_magic != LANG_MAGIC)
997 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
999 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1004 languages_allocsize = DEFAULT_ALLOCSIZE;
1005 languages = (const struct language_defn **) xmalloc
1006 (languages_allocsize * sizeof (*languages));
1008 if (languages_size >= languages_allocsize)
1010 languages_allocsize *= 2;
1011 languages = (const struct language_defn **) xrealloc ((char *) languages,
1012 languages_allocsize * sizeof (*languages));
1014 languages[languages_size++] = lang;
1017 /* Iterate through all registered languages looking for and calling
1018 any non-NULL struct language_defn.skip_trampoline() functions.
1019 Return the result from the first that returns non-zero, or 0 if all
1022 skip_language_trampoline (CORE_ADDR pc)
1026 for (i = 0; i < languages_size; i++)
1028 if (languages[i]->skip_trampoline)
1030 CORE_ADDR real_pc = (languages[i]->skip_trampoline) (pc);
1039 /* Return demangled language symbol, or NULL.
1040 FIXME: Options are only useful for certain languages and ignored
1041 by others, so it would be better to remove them here and have a
1042 more flexible demangler for the languages that need it.
1043 FIXME: Sometimes the demangler is invoked when we don't know the
1044 language, so we can't use this everywhere. */
1046 language_demangle (const struct language_defn *current_language,
1047 const char *mangled, int options)
1049 if (current_language != NULL && current_language->la_demangle)
1050 return current_language->la_demangle (mangled, options);
1054 /* Return class name from physname or NULL. */
1056 language_class_name_from_physname (const struct language_defn *current_language,
1057 const char *physname)
1059 if (current_language != NULL && current_language->la_class_name_from_physname)
1060 return current_language->la_class_name_from_physname (physname);
1064 /* Return the default string containing the list of characters
1065 delimiting words. This is a reasonable default value that
1066 most languages should be able to use. */
1069 default_word_break_characters (void)
1071 return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1074 /* Define the language that is no language. */
1077 unk_lang_parser (void)
1083 unk_lang_error (char *msg)
1085 error ("Attempted to parse an expression with unknown language");
1089 unk_lang_emit_char (int c, struct ui_file *stream, int quoter)
1091 error ("internal error - unimplemented function unk_lang_emit_char called.");
1095 unk_lang_printchar (int c, struct ui_file *stream)
1097 error ("internal error - unimplemented function unk_lang_printchar called.");
1101 unk_lang_printstr (struct ui_file *stream, char *string, unsigned int length,
1102 int width, int force_ellipses)
1104 error ("internal error - unimplemented function unk_lang_printstr called.");
1107 static struct type *
1108 unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
1110 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1114 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1115 int show, int level)
1117 error ("internal error - unimplemented function unk_lang_print_type called.");
1121 unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
1122 CORE_ADDR address, struct ui_file *stream, int format,
1123 int deref_ref, int recurse, enum val_prettyprint pretty)
1125 error ("internal error - unimplemented function unk_lang_val_print called.");
1129 unk_lang_value_print (struct value *val, struct ui_file *stream, int format,
1130 enum val_prettyprint pretty)
1132 error ("internal error - unimplemented function unk_lang_value_print called.");
1135 static CORE_ADDR unk_lang_trampoline (CORE_ADDR pc)
1140 /* Unknown languages just use the cplus demangler. */
1141 static char *unk_lang_demangle (const char *mangled, int options)
1143 return cplus_demangle (mangled, options);
1146 static char *unk_lang_class_name (const char *mangled)
1151 static const struct op_print unk_op_print_tab[] =
1153 {NULL, OP_NULL, PREC_NULL, 0}
1157 unknown_language_arch_info (struct gdbarch *gdbarch,
1158 struct language_arch_info *lai)
1160 lai->string_char_type = builtin_type (gdbarch)->builtin_char;
1161 lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
1165 const struct language_defn unknown_language_defn =
1174 &exp_descriptor_standard,
1178 unk_lang_printchar, /* Print character constant */
1181 unk_lang_create_fundamental_type,
1182 unk_lang_print_type, /* Print a type using appropriate syntax */
1183 unk_lang_val_print, /* Print a value using appropriate syntax */
1184 unk_lang_value_print, /* Print a top-level value */
1185 unk_lang_trampoline, /* Language specific skip_trampoline */
1186 value_of_this, /* value_of_this */
1187 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1188 basic_lookup_transparent_type,/* lookup_transparent_type */
1189 unk_lang_demangle, /* Language specific symbol demangler */
1190 unk_lang_class_name, /* Language specific class_name_from_physname */
1191 unk_op_print_tab, /* expression operators for printing */
1192 1, /* c-style arrays */
1193 0, /* String lower bound */
1195 default_word_break_characters,
1196 unknown_language_arch_info, /* la_language_arch_info. */
1200 /* These two structs define fake entries for the "local" and "auto" options. */
1201 const struct language_defn auto_language_defn =
1210 &exp_descriptor_standard,
1214 unk_lang_printchar, /* Print character constant */
1217 unk_lang_create_fundamental_type,
1218 unk_lang_print_type, /* Print a type using appropriate syntax */
1219 unk_lang_val_print, /* Print a value using appropriate syntax */
1220 unk_lang_value_print, /* Print a top-level value */
1221 unk_lang_trampoline, /* Language specific skip_trampoline */
1222 value_of_this, /* value_of_this */
1223 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1224 basic_lookup_transparent_type,/* lookup_transparent_type */
1225 unk_lang_demangle, /* Language specific symbol demangler */
1226 unk_lang_class_name, /* Language specific class_name_from_physname */
1227 unk_op_print_tab, /* expression operators for printing */
1228 1, /* c-style arrays */
1229 0, /* String lower bound */
1231 default_word_break_characters,
1232 unknown_language_arch_info, /* la_language_arch_info. */
1236 const struct language_defn local_language_defn =
1245 &exp_descriptor_standard,
1249 unk_lang_printchar, /* Print character constant */
1252 unk_lang_create_fundamental_type,
1253 unk_lang_print_type, /* Print a type using appropriate syntax */
1254 unk_lang_val_print, /* Print a value using appropriate syntax */
1255 unk_lang_value_print, /* Print a top-level value */
1256 unk_lang_trampoline, /* Language specific skip_trampoline */
1257 value_of_this, /* value_of_this */
1258 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1259 basic_lookup_transparent_type,/* lookup_transparent_type */
1260 unk_lang_demangle, /* Language specific symbol demangler */
1261 unk_lang_class_name, /* Language specific class_name_from_physname */
1262 unk_op_print_tab, /* expression operators for printing */
1263 1, /* c-style arrays */
1264 0, /* String lower bound */
1266 default_word_break_characters,
1267 unknown_language_arch_info, /* la_language_arch_info. */
1271 /* Per-architecture language information. */
1273 static struct gdbarch_data *language_gdbarch_data;
1275 struct language_gdbarch
1277 /* A vector of per-language per-architecture info. Indexed by "enum
1279 struct language_arch_info arch_info[nr_languages];
1283 language_gdbarch_post_init (struct gdbarch *gdbarch)
1285 struct language_gdbarch *l;
1288 l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
1289 for (i = 0; i < languages_size; i++)
1291 if (languages[i] != NULL
1292 && languages[i]->la_language_arch_info != NULL)
1293 languages[i]->la_language_arch_info
1294 (gdbarch, l->arch_info + languages[i]->la_language);
1300 language_string_char_type (const struct language_defn *la,
1301 struct gdbarch *gdbarch)
1303 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1304 language_gdbarch_data);
1305 if (ld->arch_info[la->la_language].string_char_type != NULL)
1306 return ld->arch_info[la->la_language].string_char_type;
1308 return (*la->string_char_type);
1312 language_lookup_primitive_type_by_name (const struct language_defn *la,
1313 struct gdbarch *gdbarch,
1316 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1317 language_gdbarch_data);
1318 if (ld->arch_info[la->la_language].primitive_type_vector != NULL)
1320 struct type *const *p;
1321 for (p = ld->arch_info[la->la_language].primitive_type_vector;
1325 if (strcmp (TYPE_NAME (*p), name) == 0)
1331 struct type **const *p;
1332 for (p = current_language->la_builtin_type_vector; *p != NULL; p++)
1334 if (strcmp (TYPE_NAME (**p), name) == 0)
1341 /* Initialize the language routines */
1344 _initialize_language (void)
1346 struct cmd_list_element *set, *show;
1348 language_gdbarch_data
1349 = gdbarch_data_register_post_init (language_gdbarch_post_init);
1351 /* GDB commands for language specific stuff */
1353 set = add_set_cmd ("language", class_support, var_string_noescape,
1355 "Set the current source language.",
1357 show = deprecated_add_show_from_set (set, &showlist);
1358 set_cmd_cfunc (set, set_language_command);
1359 set_cmd_cfunc (show, show_language_command);
1361 add_prefix_cmd ("check", no_class, set_check,
1362 "Set the status of the type/range checker.",
1363 &setchecklist, "set check ", 0, &setlist);
1364 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1365 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1367 add_prefix_cmd ("check", no_class, show_check,
1368 "Show the status of the type/range checker.",
1369 &showchecklist, "show check ", 0, &showlist);
1370 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1371 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1373 set = add_set_cmd ("type", class_support, var_string_noescape,
1375 "Set type checking. (on/warn/off/auto)",
1377 show = deprecated_add_show_from_set (set, &showchecklist);
1378 set_cmd_cfunc (set, set_type_command);
1379 set_cmd_cfunc (show, show_type_command);
1381 set = add_set_cmd ("range", class_support, var_string_noescape,
1383 "Set range checking. (on/warn/off/auto)",
1385 show = deprecated_add_show_from_set (set, &showchecklist);
1386 set_cmd_cfunc (set, set_range_command);
1387 set_cmd_cfunc (show, show_range_command);
1389 set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
1390 (char *) &case_sensitive,
1391 "Set case sensitivity in name search. (on/off/auto)\n\
1392 For Fortran the default is off; for other languages the default is on.",
1394 show = deprecated_add_show_from_set (set, &showlist);
1395 set_cmd_cfunc (set, set_case_command);
1396 set_cmd_cfunc (show, show_case_command);
1398 add_language (&unknown_language_defn);
1399 add_language (&local_language_defn);
1400 add_language (&auto_language_defn);
1402 language = savestring ("auto", strlen ("auto"));
1403 type = savestring ("auto", strlen ("auto"));
1404 range = savestring ("auto", strlen ("auto"));
1405 case_sensitive = savestring ("auto",strlen ("auto"));
1407 /* Have the above take effect */
1408 set_language (language_auto);