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 */
583 /* This page contains functions that return format strings for
584 printf for printing out numbers in different formats */
586 /* Returns the appropriate printf format for hexadecimal
589 local_hex_format_custom (char *pre)
591 static char form[50];
593 strcpy (form, local_hex_format_prefix ());
596 strcat (form, local_hex_format_specifier ());
597 strcat (form, local_hex_format_suffix ());
601 /* Converts a LONGEST to custom hexadecimal and stores it in a static
602 string. Returns a pointer to this string. */
604 local_hex_string (LONGEST num)
606 return local_hex_string_custom (num, "l");
609 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
610 string. Returns a pointer to this string. Note that the width parameter
611 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
614 local_hex_string_custom (LONGEST num, char *width)
616 #define RESULT_BUF_LEN 50
617 static char res2[RESULT_BUF_LEN];
618 char format[RESULT_BUF_LEN];
622 char *pad_char; /* string with one character */
625 char temp_nbr_buf[RESULT_BUF_LEN];
627 /* Use phex_nz to print the number into a string, then
628 build the result string from local_hex_format_prefix, padding and
629 the hex representation as indicated by "width". */
630 strcpy (temp_nbr_buf, phex_nz (num, sizeof (num)));
635 if (*parse_ptr == '-')
640 if (*parse_ptr == '0')
644 pad_char = "0"; /* If padding is on the right, it is blank */
646 field_width = atoi (parse_ptr);
647 num_len = strlen (temp_nbr_buf);
648 num_pad_chars = field_width - strlen (temp_nbr_buf); /* possibly negative */
650 if (strlen (local_hex_format_prefix ()) + num_len + num_pad_chars
651 >= RESULT_BUF_LEN) /* paranoia */
652 internal_error (__FILE__, __LINE__,
653 "local_hex_string_custom: insufficient space to store result");
655 strcpy (res2, local_hex_format_prefix ());
658 while (num_pad_chars > 0)
660 strcat (res2, pad_char);
664 strcat (res2, temp_nbr_buf);
667 while (num_pad_chars > 0)
669 strcat (res2, pad_char);
675 } /* local_hex_string_custom */
677 /* Returns the appropriate printf format for octal
680 local_octal_format_custom (char *pre)
682 static char form[50];
684 strcpy (form, local_octal_format_prefix ());
687 strcat (form, local_octal_format_specifier ());
688 strcat (form, local_octal_format_suffix ());
692 /* Returns the appropriate printf format for decimal numbers. */
694 local_decimal_format_custom (char *pre)
696 static char form[50];
698 strcpy (form, local_decimal_format_prefix ());
701 strcat (form, local_decimal_format_specifier ());
702 strcat (form, local_decimal_format_suffix ());
707 /* This page contains functions that are used in type/range checking.
708 They all return zero if the type/range check fails.
710 It is hoped that these will make extending GDB to parse different
711 languages a little easier. These are primarily used in eval.c when
712 evaluating expressions and making sure that their types are correct.
713 Instead of having a mess of conjucted/disjuncted expressions in an "if",
714 the ideas of type can be wrapped up in the following functions.
716 Note that some of them are not currently dependent upon which language
717 is currently being parsed. For example, floats are the same in
718 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
719 TYPE_CODE_FLT), while booleans are different. */
721 /* Returns non-zero if its argument is a simple type. This is the same for
722 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
723 and thus will never cause the failure of the test. */
725 simple_type (struct type *type)
727 CHECK_TYPEDEF (type);
728 switch (TYPE_CODE (type))
734 case TYPE_CODE_RANGE:
743 /* Returns non-zero if its argument is of an ordered type.
744 An ordered type is one in which the elements can be tested for the
745 properties of "greater than", "less than", etc, or for which the
746 operations "increment" or "decrement" make sense. */
748 ordered_type (struct type *type)
750 CHECK_TYPEDEF (type);
751 switch (TYPE_CODE (type))
757 case TYPE_CODE_RANGE:
765 /* Returns non-zero if the two types are the same */
767 same_type (struct type *arg1, struct type *arg2)
769 CHECK_TYPEDEF (type);
770 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
771 /* One is structured and one isn't */
773 else if (structured_type (arg1) && structured_type (arg2))
775 else if (numeric_type (arg1) && numeric_type (arg2))
776 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
777 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
783 /* Returns non-zero if the type is integral */
785 integral_type (struct type *type)
787 CHECK_TYPEDEF (type);
788 switch (current_language->la_language)
793 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
794 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
796 case language_pascal:
797 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
799 error ("Language not supported.");
803 /* Returns non-zero if the value is numeric */
805 numeric_type (struct type *type)
807 CHECK_TYPEDEF (type);
808 switch (TYPE_CODE (type))
819 /* Returns non-zero if the value is a character type */
821 character_type (struct type *type)
823 CHECK_TYPEDEF (type);
824 switch (current_language->la_language)
827 case language_pascal:
828 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
833 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
834 TYPE_LENGTH (type) == sizeof (char)
841 /* Returns non-zero if the value is a string type */
843 string_type (struct type *type)
845 CHECK_TYPEDEF (type);
846 switch (current_language->la_language)
849 case language_pascal:
850 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
855 /* C does not have distinct string type. */
862 /* Returns non-zero if the value is a boolean type */
864 boolean_type (struct type *type)
866 CHECK_TYPEDEF (type);
867 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
869 switch (current_language->la_language)
874 /* Might be more cleanly handled by having a
875 TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
876 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
877 if (TYPE_CODE (type) == TYPE_CODE_INT)
885 /* Returns non-zero if the value is a floating-point type */
887 float_type (struct type *type)
889 CHECK_TYPEDEF (type);
890 return TYPE_CODE (type) == TYPE_CODE_FLT;
893 /* Returns non-zero if the value is a pointer type */
895 pointer_type (struct type *type)
897 return TYPE_CODE (type) == TYPE_CODE_PTR ||
898 TYPE_CODE (type) == TYPE_CODE_REF;
901 /* Returns non-zero if the value is a structured type */
903 structured_type (struct type *type)
905 CHECK_TYPEDEF (type);
906 switch (current_language->la_language)
911 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
912 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
913 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
914 case language_pascal:
915 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
916 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
917 (TYPE_CODE(type) == TYPE_CODE_SET) ||
918 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
920 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
921 (TYPE_CODE (type) == TYPE_CODE_SET) ||
922 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
930 lang_bool_type (void)
934 switch (current_language->la_language)
936 case language_fortran:
937 sym = lookup_symbol ("logical", NULL, VAR_DOMAIN, NULL, NULL);
940 type = SYMBOL_TYPE (sym);
941 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
944 return builtin_type_f_logical_s2;
946 case language_pascal:
947 if (current_language->la_language==language_cplus)
948 {sym = lookup_symbol ("bool", NULL, VAR_DOMAIN, NULL, NULL);}
950 {sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);}
953 type = SYMBOL_TYPE (sym);
954 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
957 return builtin_type_bool;
959 sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);
962 type = SYMBOL_TYPE (sym);
963 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
966 return java_boolean_type;
968 return builtin_type_int;
972 /* This page contains functions that return info about
973 (struct value) values used in GDB. */
975 /* Returns non-zero if the value VAL represents a true value. */
977 value_true (struct value *val)
979 /* It is possible that we should have some sort of error if a non-boolean
980 value is used in this context. Possibly dependent on some kind of
981 "boolean-checking" option like range checking. But it should probably
982 not depend on the language except insofar as is necessary to identify
983 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
984 should be an error, probably). */
985 return !value_logical_not (val);
988 /* This page contains functions for the printing out of
989 error messages that occur during type- and range-
992 /* These are called when a language fails a type- or range-check. The
993 first argument should be a printf()-style format string, and the
994 rest of the arguments should be its arguments. If
995 [type|range]_check is [type|range]_check_on, an error is printed;
996 if [type|range]_check_warn, a warning; otherwise just the
1000 type_error (const char *string,...)
1003 va_start (args, string);
1007 case type_check_warn:
1008 vwarning (string, args);
1011 verror (string, args);
1013 case type_check_off:
1014 /* FIXME: cagney/2002-01-30: Should this function print anything
1015 when type error is off? */
1016 vfprintf_filtered (gdb_stderr, string, args);
1017 fprintf_filtered (gdb_stderr, "\n");
1020 internal_error (__FILE__, __LINE__, "bad switch");
1026 range_error (const char *string,...)
1029 va_start (args, string);
1031 switch (range_check)
1033 case range_check_warn:
1034 vwarning (string, args);
1036 case range_check_on:
1037 verror (string, args);
1039 case range_check_off:
1040 /* FIXME: cagney/2002-01-30: Should this function print anything
1041 when range error is off? */
1042 vfprintf_filtered (gdb_stderr, string, args);
1043 fprintf_filtered (gdb_stderr, "\n");
1046 internal_error (__FILE__, __LINE__, "bad switch");
1052 /* This page contains miscellaneous functions */
1054 /* Return the language enum for a given language string. */
1057 language_enum (char *str)
1061 for (i = 0; i < languages_size; i++)
1062 if (DEPRECATED_STREQ (languages[i]->la_name, str))
1063 return languages[i]->la_language;
1065 return language_unknown;
1068 /* Return the language struct for a given language enum. */
1070 const struct language_defn *
1071 language_def (enum language lang)
1075 for (i = 0; i < languages_size; i++)
1077 if (languages[i]->la_language == lang)
1079 return languages[i];
1085 /* Return the language as a string */
1087 language_str (enum language lang)
1091 for (i = 0; i < languages_size; i++)
1093 if (languages[i]->la_language == lang)
1095 return languages[i]->la_name;
1102 set_check (char *ignore, int from_tty)
1105 "\"set check\" must be followed by the name of a check subcommand.\n");
1106 help_list (setchecklist, "set check ", -1, gdb_stdout);
1110 show_check (char *ignore, int from_tty)
1112 cmd_show_list (showchecklist, from_tty, "");
1115 /* Add a language to the set of known languages. */
1118 add_language (const struct language_defn *lang)
1120 if (lang->la_magic != LANG_MAGIC)
1122 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
1124 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1129 languages_allocsize = DEFAULT_ALLOCSIZE;
1130 languages = (const struct language_defn **) xmalloc
1131 (languages_allocsize * sizeof (*languages));
1133 if (languages_size >= languages_allocsize)
1135 languages_allocsize *= 2;
1136 languages = (const struct language_defn **) xrealloc ((char *) languages,
1137 languages_allocsize * sizeof (*languages));
1139 languages[languages_size++] = lang;
1142 /* Iterate through all registered languages looking for and calling
1143 any non-NULL struct language_defn.skip_trampoline() functions.
1144 Return the result from the first that returns non-zero, or 0 if all
1147 skip_language_trampoline (CORE_ADDR pc)
1151 for (i = 0; i < languages_size; i++)
1153 if (languages[i]->skip_trampoline)
1155 CORE_ADDR real_pc = (languages[i]->skip_trampoline) (pc);
1164 /* Return demangled language symbol, or NULL.
1165 FIXME: Options are only useful for certain languages and ignored
1166 by others, so it would be better to remove them here and have a
1167 more flexible demangler for the languages that need it.
1168 FIXME: Sometimes the demangler is invoked when we don't know the
1169 language, so we can't use this everywhere. */
1171 language_demangle (const struct language_defn *current_language,
1172 const char *mangled, int options)
1174 if (current_language != NULL && current_language->la_demangle)
1175 return current_language->la_demangle (mangled, options);
1179 /* Return class name from physname or NULL. */
1181 language_class_name_from_physname (const struct language_defn *current_language,
1182 const char *physname)
1184 if (current_language != NULL && current_language->la_class_name_from_physname)
1185 return current_language->la_class_name_from_physname (physname);
1189 /* Return the default string containing the list of characters
1190 delimiting words. This is a reasonable default value that
1191 most languages should be able to use. */
1194 default_word_break_characters (void)
1196 return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1199 /* Define the language that is no language. */
1202 unk_lang_parser (void)
1208 unk_lang_error (char *msg)
1210 error ("Attempted to parse an expression with unknown language");
1214 unk_lang_emit_char (int c, struct ui_file *stream, int quoter)
1216 error ("internal error - unimplemented function unk_lang_emit_char called.");
1220 unk_lang_printchar (int c, struct ui_file *stream)
1222 error ("internal error - unimplemented function unk_lang_printchar called.");
1226 unk_lang_printstr (struct ui_file *stream, char *string, unsigned int length,
1227 int width, int force_ellipses)
1229 error ("internal error - unimplemented function unk_lang_printstr called.");
1232 static struct type *
1233 unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
1235 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1239 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1240 int show, int level)
1242 error ("internal error - unimplemented function unk_lang_print_type called.");
1246 unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
1247 CORE_ADDR address, struct ui_file *stream, int format,
1248 int deref_ref, int recurse, enum val_prettyprint pretty)
1250 error ("internal error - unimplemented function unk_lang_val_print called.");
1254 unk_lang_value_print (struct value *val, struct ui_file *stream, int format,
1255 enum val_prettyprint pretty)
1257 error ("internal error - unimplemented function unk_lang_value_print called.");
1260 static CORE_ADDR unk_lang_trampoline (CORE_ADDR pc)
1265 /* Unknown languages just use the cplus demangler. */
1266 static char *unk_lang_demangle (const char *mangled, int options)
1268 return cplus_demangle (mangled, options);
1271 static char *unk_lang_class_name (const char *mangled)
1276 static struct type **const (unknown_builtin_types[]) =
1280 static const struct op_print unk_op_print_tab[] =
1282 {NULL, OP_NULL, PREC_NULL, 0}
1285 const struct language_defn unknown_language_defn =
1289 &unknown_builtin_types[0],
1293 &exp_descriptor_standard,
1297 unk_lang_printchar, /* Print character constant */
1300 unk_lang_create_fundamental_type,
1301 unk_lang_print_type, /* Print a type using appropriate syntax */
1302 unk_lang_val_print, /* Print a value using appropriate syntax */
1303 unk_lang_value_print, /* Print a top-level value */
1304 unk_lang_trampoline, /* Language specific skip_trampoline */
1305 value_of_this, /* value_of_this */
1306 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1307 basic_lookup_transparent_type,/* lookup_transparent_type */
1308 unk_lang_demangle, /* Language specific symbol demangler */
1309 unk_lang_class_name, /* Language specific class_name_from_physname */
1310 {"", "", "", ""}, /* Binary format info */
1311 {"0%lo", "0", "o", ""}, /* Octal format info */
1312 {"%ld", "", "d", ""}, /* Decimal format info */
1313 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1314 unk_op_print_tab, /* expression operators for printing */
1315 1, /* c-style arrays */
1316 0, /* String lower bound */
1317 &builtin_type_char, /* Type of string elements */
1318 default_word_break_characters,
1322 /* These two structs define fake entries for the "local" and "auto" options. */
1323 const struct language_defn auto_language_defn =
1327 &unknown_builtin_types[0],
1331 &exp_descriptor_standard,
1335 unk_lang_printchar, /* Print character constant */
1338 unk_lang_create_fundamental_type,
1339 unk_lang_print_type, /* Print a type using appropriate syntax */
1340 unk_lang_val_print, /* Print a value using appropriate syntax */
1341 unk_lang_value_print, /* Print a top-level value */
1342 unk_lang_trampoline, /* Language specific skip_trampoline */
1343 value_of_this, /* value_of_this */
1344 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1345 basic_lookup_transparent_type,/* lookup_transparent_type */
1346 unk_lang_demangle, /* Language specific symbol demangler */
1347 unk_lang_class_name, /* Language specific class_name_from_physname */
1348 {"", "", "", ""}, /* Binary format info */
1349 {"0%lo", "0", "o", ""}, /* Octal format info */
1350 {"%ld", "", "d", ""}, /* Decimal format info */
1351 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1352 unk_op_print_tab, /* expression operators for printing */
1353 1, /* c-style arrays */
1354 0, /* String lower bound */
1355 &builtin_type_char, /* Type of string elements */
1356 default_word_break_characters,
1360 const struct language_defn local_language_defn =
1364 &unknown_builtin_types[0],
1368 &exp_descriptor_standard,
1372 unk_lang_printchar, /* Print character constant */
1375 unk_lang_create_fundamental_type,
1376 unk_lang_print_type, /* Print a type using appropriate syntax */
1377 unk_lang_val_print, /* Print a value using appropriate syntax */
1378 unk_lang_value_print, /* Print a top-level value */
1379 unk_lang_trampoline, /* Language specific skip_trampoline */
1380 value_of_this, /* value_of_this */
1381 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1382 basic_lookup_transparent_type,/* lookup_transparent_type */
1383 unk_lang_demangle, /* Language specific symbol demangler */
1384 unk_lang_class_name, /* Language specific class_name_from_physname */
1385 {"", "", "", ""}, /* Binary format info */
1386 {"0%lo", "0", "o", ""}, /* Octal format info */
1387 {"%ld", "", "d", ""}, /* Decimal format info */
1388 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1389 unk_op_print_tab, /* expression operators for printing */
1390 1, /* c-style arrays */
1391 0, /* String lower bound */
1392 &builtin_type_char, /* Type of string elements */
1393 default_word_break_characters,
1397 /* Initialize the language routines */
1400 _initialize_language (void)
1402 struct cmd_list_element *set, *show;
1404 /* GDB commands for language specific stuff */
1406 set = add_set_cmd ("language", class_support, var_string_noescape,
1408 "Set the current source language.",
1410 show = deprecated_add_show_from_set (set, &showlist);
1411 set_cmd_cfunc (set, set_language_command);
1412 set_cmd_cfunc (show, show_language_command);
1414 add_prefix_cmd ("check", no_class, set_check,
1415 "Set the status of the type/range checker.",
1416 &setchecklist, "set check ", 0, &setlist);
1417 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1418 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1420 add_prefix_cmd ("check", no_class, show_check,
1421 "Show the status of the type/range checker.",
1422 &showchecklist, "show check ", 0, &showlist);
1423 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1424 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1426 set = add_set_cmd ("type", class_support, var_string_noescape,
1428 "Set type checking. (on/warn/off/auto)",
1430 show = deprecated_add_show_from_set (set, &showchecklist);
1431 set_cmd_cfunc (set, set_type_command);
1432 set_cmd_cfunc (show, show_type_command);
1434 set = add_set_cmd ("range", class_support, var_string_noescape,
1436 "Set range checking. (on/warn/off/auto)",
1438 show = deprecated_add_show_from_set (set, &showchecklist);
1439 set_cmd_cfunc (set, set_range_command);
1440 set_cmd_cfunc (show, show_range_command);
1442 set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
1443 (char *) &case_sensitive,
1444 "Set case sensitivity in name search. (on/off/auto)\n\
1445 For Fortran the default is off; for other languages the default is on.",
1447 show = deprecated_add_show_from_set (set, &showlist);
1448 set_cmd_cfunc (set, set_case_command);
1449 set_cmd_cfunc (show, show_case_command);
1451 add_language (&unknown_language_defn);
1452 add_language (&local_language_defn);
1453 add_language (&auto_language_defn);
1455 language = savestring ("auto", strlen ("auto"));
1456 type = savestring ("auto", strlen ("auto"));
1457 range = savestring ("auto", strlen ("auto"));
1458 case_sensitive = savestring ("auto",strlen ("auto"));
1460 /* Have the above take effect */
1461 set_language (language_auto);