1 /* Multiple source language support for GDB.
2 Copyright 1991, 1992 Free Software Foundation, Inc.
3 Contributed by the Department of Computer Science at the State University
4 of New York at Buffalo.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This file contains functions that return things that are specific
23 to languages. Each function should examine current_language if necessary,
24 and return the appropriate result. */
26 /* FIXME: Most of these would be better organized as macros which
27 return data out of a "language-specific" struct pointer that is set
28 whenever the working language changes. That would be a lot faster. */
32 #include "gdb_string.h"
33 #ifdef ANSI_PROTOTYPES
44 #include "expression.h"
47 #include "parser-defs.h"
50 show_language_command PARAMS ((char *, int));
53 set_language_command PARAMS ((char *, int));
56 show_type_command PARAMS ((char *, int));
59 set_type_command PARAMS ((char *, int));
62 show_range_command PARAMS ((char *, int));
65 set_range_command PARAMS ((char *, int));
68 set_range_str PARAMS ((void));
71 set_type_str PARAMS ((void));
74 set_lang_str PARAMS ((void));
77 unk_lang_error PARAMS ((char *));
80 unk_lang_parser PARAMS ((void));
83 show_check PARAMS ((char *, int));
86 set_check PARAMS ((char *, int));
89 set_type_range PARAMS ((void));
91 /* Forward declaration */
92 extern const struct language_defn unknown_language_defn;
93 extern char *warning_pre_print;
95 /* The current (default at startup) state of type and range checking.
96 (If the modes are set to "auto", though, these are changed based
97 on the default language at startup, and then again based on the
98 language of the first source file. */
100 enum range_mode range_mode = range_mode_auto;
101 enum range_check range_check = range_check_off;
102 enum type_mode type_mode = type_mode_auto;
103 enum type_check type_check = type_check_off;
105 /* The current language and language_mode (see language.h) */
107 const struct language_defn *current_language = &unknown_language_defn;
108 enum language_mode language_mode = language_mode_auto;
110 /* The language that the user expects to be typing in (the language
111 of main(), or the last language we notified them about, or C). */
113 const struct language_defn *expected_language;
115 /* The list of supported languages. The list itself is malloc'd. */
117 static const struct language_defn **languages;
118 static unsigned languages_size;
119 static unsigned languages_allocsize;
120 #define DEFAULT_ALLOCSIZE 4
122 /* The "set language/type/range" commands all put stuff in these
123 buffers. This is to make them work as set/show commands. The
124 user's string is copied here, then the set_* commands look at
125 them and update them to something that looks nice when it is
128 static char *language;
132 /* Warning issued when current_language and the language of the current
133 frame do not match. */
134 char lang_frame_mismatch_warn[] =
135 "Warning: the current language does not match this frame.";
138 /* This page contains the functions corresponding to GDB commands
139 and their helpers. */
141 /* Show command. Display a warning if the language set
142 does not match the frame. */
144 show_language_command (ignore, from_tty)
148 enum language flang; /* The language of the current frame */
150 flang = get_frame_language();
151 if (flang != language_unknown &&
152 language_mode == language_mode_manual &&
153 current_language->la_language != flang)
154 printf_filtered("%s\n",lang_frame_mismatch_warn);
157 /* Set command. Change the current working language. */
159 set_language_command (ignore, from_tty)
167 if (!language || !language[0])
169 printf_unfiltered("The currently understood settings are:\n\n");
170 printf_unfiltered ("local or auto Automatic setting based on source file\n");
172 for (i = 0; i < languages_size; ++i)
174 /* Already dealt with these above. */
175 if (languages[i]->la_language == language_unknown
176 || languages[i]->la_language == language_auto)
179 /* FIXME for now assume that the human-readable name is just
180 a capitalization of the internal name. */
181 printf_unfiltered ("%-16s Use the %c%s language\n",
182 languages[i]->la_name,
183 /* Capitalize first letter of language
185 toupper (languages[i]->la_name[0]),
186 languages[i]->la_name + 1);
188 /* Restore the silly string. */
189 set_language(current_language->la_language);
193 /* Search the list of languages for a match. */
194 for (i = 0; i < languages_size; i++) {
195 if (STREQ (languages[i]->la_name, language)) {
196 /* Found it! Go into manual mode, and use this language. */
197 if (languages[i]->la_language == language_auto) {
198 /* Enter auto mode. Set to the current frame's language, if known. */
199 language_mode = language_mode_auto;
200 flang = get_frame_language();
201 if (flang!=language_unknown)
203 expected_language = current_language;
206 /* Enter manual mode. Set the specified language. */
207 language_mode = language_mode_manual;
208 current_language = languages[i];
211 expected_language = current_language;
217 /* Reset the language (esp. the global string "language") to the
219 err_lang=savestring(language,strlen(language));
220 make_cleanup (free, err_lang); /* Free it after error */
221 set_language(current_language->la_language);
222 error ("Unknown language `%s'.",err_lang);
225 /* Show command. Display a warning if the type setting does
226 not match the current language. */
228 show_type_command(ignore, from_tty)
232 if (type_check != current_language->la_type_check)
234 "Warning: the current type check setting does not match the language.\n");
237 /* Set command. Change the setting for type checking. */
239 set_type_command(ignore, from_tty)
243 if (STREQ(type,"on"))
245 type_check = type_check_on;
246 type_mode = type_mode_manual;
248 else if (STREQ(type,"warn"))
250 type_check = type_check_warn;
251 type_mode = type_mode_manual;
253 else if (STREQ(type,"off"))
255 type_check = type_check_off;
256 type_mode = type_mode_manual;
258 else if (STREQ(type,"auto"))
260 type_mode = type_mode_auto;
262 /* Avoid hitting the set_type_str call below. We
263 did it in set_type_range. */
267 show_type_command((char *)NULL, from_tty);
270 /* Show command. Display a warning if the range setting does
271 not match the current language. */
273 show_range_command(ignore, from_tty)
278 if (range_check != current_language->la_range_check)
280 "Warning: the current range check setting does not match the language.\n");
283 /* Set command. Change the setting for range checking. */
285 set_range_command(ignore, from_tty)
289 if (STREQ(range,"on"))
291 range_check = range_check_on;
292 range_mode = range_mode_manual;
294 else if (STREQ(range,"warn"))
296 range_check = range_check_warn;
297 range_mode = range_mode_manual;
299 else if (STREQ(range,"off"))
301 range_check = range_check_off;
302 range_mode = range_mode_manual;
304 else if (STREQ(range,"auto"))
306 range_mode = range_mode_auto;
308 /* Avoid hitting the set_range_str call below. We
309 did it in set_type_range. */
313 show_range_command((char *)0, from_tty);
316 /* Set the status of range and type checking based on
317 the current modes and the current language.
318 If SHOW is non-zero, then print out the current language,
319 type and range checking status. */
324 if (range_mode == range_mode_auto)
325 range_check = current_language->la_range_check;
327 if (type_mode == type_mode_auto)
328 type_check = current_language->la_type_check;
334 /* Set current language to (enum language) LANG. */
342 for (i = 0; i < languages_size; i++) {
343 if (languages[i]->la_language == lang) {
344 current_language = languages[i];
352 /* This page contains functions that update the global vars
353 language, type and range. */
360 if (language_mode == language_mode_auto)
361 prefix = "auto; currently ";
363 language = concat(prefix, current_language->la_name, NULL);
369 char *tmp, *prefix = "";
372 if (type_mode==type_mode_auto)
373 prefix = "auto; currently ";
383 case type_check_warn:
387 error ("Unrecognized type check setting.");
390 type = concat(prefix,tmp,NULL);
396 char *tmp, *pref = "";
399 if (range_mode==range_mode_auto)
400 pref = "auto; currently ";
407 case range_check_off:
410 case range_check_warn:
414 error ("Unrecognized range check setting.");
417 range = concat(pref,tmp,NULL);
421 /* Print out the current language settings: language, range and
422 type checking. If QUIETLY, print only what has changed. */
425 language_info (quietly)
428 if (quietly && expected_language == current_language)
431 expected_language = current_language;
432 printf_unfiltered("Current language: %s\n",language);
433 show_language_command((char *)0, 1);
437 printf_unfiltered("Type checking: %s\n",type);
438 show_type_command((char *)0, 1);
439 printf_unfiltered("Range checking: %s\n",range);
440 show_range_command((char *)0, 1);
444 /* Return the result of a binary operation. */
446 #if 0 /* Currently unused */
449 binop_result_type (v1, v2)
453 struct type *t1 = check_typedef (VALUE_TYPE (v1));
454 struct type *t2 = check_typedef (VALUE_TYPE (v2));
456 int l1 = TYPE_LENGTH (t1);
457 int l2 = TYPE_LENGTH (t2);
459 switch(current_language->la_language)
463 if (TYPE_CODE (t1)==TYPE_CODE_FLT)
464 return TYPE_CODE(t2) == TYPE_CODE_FLT && l2 > l1 ?
465 VALUE_TYPE(v2) : VALUE_TYPE(v1);
466 else if (TYPE_CODE(t2)==TYPE_CODE_FLT)
467 return TYPE_CODE(t1)) == TYPE_CODE_FLT && l1 > l2 ?
468 VALUE_TYPE(v1) : VALUE_TYPE(v2);
469 else if (TYPE_UNSIGNED(t1) && l1 > l2)
470 return VALUE_TYPE(v1);
471 else if (TYPE_UNSIGNED(t2) && l2 > l1)
472 return VALUE_TYPE(v2);
473 else /* Both are signed. Result is the longer type */
474 return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2);
477 /* If we are doing type-checking, l1 should equal l2, so this is
479 return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2);
482 error ("Missing Chill support in function binop_result_check.");/*FIXME*/
485 return (struct type *)0; /* For lint */
491 /* This page contains functions that return format strings for
492 printf for printing out numbers in different formats */
494 /* Returns the appropriate printf format for hexadecimal
497 local_hex_format_custom(pre)
500 static char form[50];
502 strcpy (form, local_hex_format_prefix ());
505 strcat (form, local_hex_format_specifier ());
506 strcat (form, local_hex_format_suffix ());
510 /* Converts a number to hexadecimal and stores it in a static
511 string. Returns a pointer to this string. */
513 local_hex_string (num)
518 sprintf (res, local_hex_format(), num);
522 /* Converts a number to custom hexadecimal and stores it in a static
523 string. Returns a pointer to this string. */
525 local_hex_string_custom(num,pre)
531 sprintf (res, local_hex_format_custom(pre), num);
535 /* Returns the appropriate printf format for octal
538 local_octal_format_custom(pre)
541 static char form[50];
543 strcpy (form, local_octal_format_prefix ());
546 strcat (form, local_octal_format_specifier ());
547 strcat (form, local_octal_format_suffix ());
551 /* Returns the appropriate printf format for decimal numbers. */
553 local_decimal_format_custom(pre)
556 static char form[50];
558 strcpy (form, local_decimal_format_prefix ());
561 strcat (form, local_decimal_format_specifier ());
562 strcat (form, local_decimal_format_suffix ());
567 /* This page contains functions that are used in type/range checking.
568 They all return zero if the type/range check fails.
570 It is hoped that these will make extending GDB to parse different
571 languages a little easier. These are primarily used in eval.c when
572 evaluating expressions and making sure that their types are correct.
573 Instead of having a mess of conjucted/disjuncted expressions in an "if",
574 the ideas of type can be wrapped up in the following functions.
576 Note that some of them are not currently dependent upon which language
577 is currently being parsed. For example, floats are the same in
578 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
579 TYPE_CODE_FLT), while booleans are different. */
581 /* Returns non-zero if its argument is a simple type. This is the same for
582 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
583 and thus will never cause the failure of the test. */
588 CHECK_TYPEDEF (type);
589 switch (TYPE_CODE (type)) {
594 case TYPE_CODE_RANGE:
603 /* Returns non-zero if its argument is of an ordered type.
604 An ordered type is one in which the elements can be tested for the
605 properties of "greater than", "less than", etc, or for which the
606 operations "increment" or "decrement" make sense. */
611 CHECK_TYPEDEF (type);
612 switch (TYPE_CODE (type)) {
617 case TYPE_CODE_RANGE:
625 /* Returns non-zero if the two types are the same */
627 same_type (arg1, arg2)
628 struct type *arg1, *arg2;
630 CHECK_TYPEDEF (type);
631 if (structured_type(arg1) ? !structured_type(arg2) : structured_type(arg2))
632 /* One is structured and one isn't */
634 else if (structured_type(arg1) && structured_type(arg2))
636 else if (numeric_type(arg1) && numeric_type(arg2))
637 return (TYPE_CODE(arg2) == TYPE_CODE(arg1)) &&
638 (TYPE_UNSIGNED(arg1) == TYPE_UNSIGNED(arg2))
644 /* Returns non-zero if the type is integral */
649 CHECK_TYPEDEF (type);
650 switch(current_language->la_language)
654 return (TYPE_CODE(type) != TYPE_CODE_INT) &&
655 (TYPE_CODE(type) != TYPE_CODE_ENUM) ? 0 : 1;
657 return TYPE_CODE(type) != TYPE_CODE_INT ? 0 : 1;
659 error ("Missing Chill support in function integral_type."); /*FIXME*/
661 error ("Language not supported.");
665 /* Returns non-zero if the value is numeric */
670 CHECK_TYPEDEF (type);
671 switch (TYPE_CODE (type)) {
681 /* Returns non-zero if the value is a character type */
683 character_type (type)
686 CHECK_TYPEDEF (type);
687 switch(current_language->la_language)
691 return TYPE_CODE(type) != TYPE_CODE_CHAR ? 0 : 1;
695 return (TYPE_CODE(type) == TYPE_CODE_INT) &&
696 TYPE_LENGTH(type) == sizeof(char)
703 /* Returns non-zero if the value is a string type */
708 CHECK_TYPEDEF (type);
709 switch(current_language->la_language)
713 return TYPE_CODE(type) != TYPE_CODE_STRING ? 0 : 1;
717 /* C does not have distinct string type. */
724 /* Returns non-zero if the value is a boolean type */
729 CHECK_TYPEDEF (type);
730 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
732 switch(current_language->la_language)
736 /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL
737 for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */
738 if (TYPE_CODE (type) == TYPE_CODE_INT)
746 /* Returns non-zero if the value is a floating-point type */
751 CHECK_TYPEDEF (type);
752 return TYPE_CODE(type) == TYPE_CODE_FLT;
755 /* Returns non-zero if the value is a pointer type */
760 return TYPE_CODE(type) == TYPE_CODE_PTR ||
761 TYPE_CODE(type) == TYPE_CODE_REF;
764 /* Returns non-zero if the value is a structured type */
766 structured_type(type)
769 CHECK_TYPEDEF (type);
770 switch(current_language->la_language)
774 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
775 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
776 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
778 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
779 (TYPE_CODE(type) == TYPE_CODE_SET) ||
780 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
782 error ("Missing Chill support in function structured_type."); /*FIXME*/
794 switch(current_language->la_language)
797 return builtin_type_chill_bool;
798 case language_fortran:
799 sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL);
802 type = SYMBOL_TYPE (sym);
803 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
806 return builtin_type_f_logical_s2;
808 sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL);
811 type = SYMBOL_TYPE (sym);
812 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
815 /* ... else fall through ... */
817 return builtin_type_int;
821 /* This page contains functions that return info about
822 (struct value) values used in GDB. */
824 /* Returns non-zero if the value VAL represents a true value. */
829 /* It is possible that we should have some sort of error if a non-boolean
830 value is used in this context. Possibly dependent on some kind of
831 "boolean-checking" option like range checking. But it should probably
832 not depend on the language except insofar as is necessary to identify
833 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
834 should be an error, probably). */
835 return !value_logical_not (val);
838 /* Returns non-zero if the operator OP is defined on
839 the values ARG1 and ARG2. */
841 #if 0 /* Currently unused */
844 binop_type_check(arg1,arg2,op)
848 struct type *t1, *t2;
850 /* If we're not checking types, always return success. */
864 if ((numeric_type(t1) && pointer_type(t2)) ||
865 (pointer_type(t1) && numeric_type(t2)))
867 warning ("combining pointer and integer.\n");
873 if (!numeric_type(t1) || !numeric_type(t2))
874 type_op_error ("Arguments to %s must be numbers.",op);
875 else if (!same_type(t1,t2))
876 type_op_error ("Arguments to %s must be of the same type.",op);
879 case BINOP_LOGICAL_AND:
880 case BINOP_LOGICAL_OR:
881 if (!boolean_type(t1) || !boolean_type(t2))
882 type_op_error ("Arguments to %s must be of boolean type.",op);
886 if ((pointer_type(t1) && !(pointer_type(t2) || integral_type(t2))) ||
887 (pointer_type(t2) && !(pointer_type(t1) || integral_type(t1))))
888 type_op_error ("A pointer can only be compared to an integer or pointer.",op);
889 else if ((pointer_type(t1) && integral_type(t2)) ||
890 (integral_type(t1) && pointer_type(t2)))
892 warning ("combining integer and pointer.\n");
895 else if (!simple_type(t1) || !simple_type(t2))
896 type_op_error ("Arguments to %s must be of simple type.",op);
897 else if (!same_type(t1,t2))
898 type_op_error ("Arguments to %s must be of the same type.",op);
903 if (!integral_type(t1) || !integral_type(t2))
904 type_op_error ("Arguments to %s must be of integral type.",op);
911 if (!ordered_type(t1) || !ordered_type(t2))
912 type_op_error ("Arguments to %s must be of ordered type.",op);
913 else if (!same_type(t1,t2))
914 type_op_error ("Arguments to %s must be of the same type.",op);
918 if (pointer_type(t1) && !integral_type(t2))
919 type_op_error ("A pointer can only be assigned an integer.",op);
920 else if (pointer_type(t1) && integral_type(t2))
922 warning ("combining integer and pointer.");
925 else if (!simple_type(t1) || !simple_type(t2))
926 type_op_error ("Arguments to %s must be of simple type.",op);
927 else if (!same_type(t1,t2))
928 type_op_error ("Arguments to %s must be of the same type.",op);
932 /* FIXME: Needs to handle bitstrings as well. */
933 if (!(string_type(t1) || character_type(t1) || integral_type(t1))
934 || !(string_type(t2) || character_type(t2) || integral_type(t2)))
935 type_op_error ("Arguments to %s must be strings or characters.", op);
938 /* Unary checks -- arg2 is null */
940 case UNOP_LOGICAL_NOT:
941 if (!boolean_type(t1))
942 type_op_error ("Argument to %s must be of boolean type.",op);
947 if (!numeric_type(t1))
948 type_op_error ("Argument to %s must be of numeric type.",op);
952 if (integral_type(t1))
954 warning ("combining pointer and integer.\n");
957 else if (!pointer_type(t1))
958 type_op_error ("Argument to %s must be a pointer.",op);
961 case UNOP_PREINCREMENT:
962 case UNOP_POSTINCREMENT:
963 case UNOP_PREDECREMENT:
964 case UNOP_POSTDECREMENT:
965 if (!ordered_type(t1))
966 type_op_error ("Argument to %s must be of an ordered type.",op);
970 /* Ok. The following operators have different meanings in
971 different languages. */
972 switch(current_language->la_language)
980 if (!numeric_type(t1) || !numeric_type(t2))
981 type_op_error ("Arguments to %s must be numbers.",op);
992 if (!float_type(t1) || !float_type(t2))
993 type_op_error ("Arguments to %s must be floating point numbers.",op);
996 if (!integral_type(t1) || !integral_type(t2))
997 type_op_error ("Arguments to %s must be of integral type.",op);
1003 case language_chill:
1004 error ("Missing Chill support in function binop_type_check.");/*FIXME*/
1014 /* This page contains functions for the printing out of
1015 error messages that occur during type- and range-
1018 /* Prints the format string FMT with the operator as a string
1019 corresponding to the opcode OP. If FATAL is non-zero, then
1020 this is an error and error () is called. Otherwise, it is
1021 a warning and printf() is called. */
1023 op_error (fmt,op,fatal)
1029 error (fmt,op_string(op));
1032 warning (fmt,op_string(op));
1036 /* These are called when a language fails a type- or range-check.
1037 The first argument should be a printf()-style format string, and
1038 the rest of the arguments should be its arguments. If
1039 [type|range]_check is [type|range]_check_on, then return_to_top_level()
1040 is called in the style of error (). Otherwise, the message is prefixed
1041 by the value of warning_pre_print and we do not return to the top level. */
1044 #ifdef ANSI_PROTOTYPES
1045 type_error (char *string, ...)
1047 type_error (va_alist)
1052 #ifdef ANSI_PROTOTYPES
1053 va_start (args, string);
1057 string = va_arg (args, char *);
1060 if (type_check == type_check_warn)
1061 fprintf_filtered (gdb_stderr, warning_pre_print);
1065 vfprintf_filtered (gdb_stderr, string, args);
1066 fprintf_filtered (gdb_stderr, "\n");
1068 if (type_check == type_check_on)
1069 return_to_top_level (RETURN_ERROR);
1073 #ifdef ANSI_PROTOTYPES
1074 range_error (char *string, ...)
1076 range_error (va_alist)
1081 #ifdef ANSI_PROTOTYPES
1082 va_start (args, string);
1086 string = va_arg (args, char *);
1089 if (range_check == range_check_warn)
1090 fprintf_filtered (gdb_stderr, warning_pre_print);
1094 vfprintf_filtered (gdb_stderr, string, args);
1095 fprintf_filtered (gdb_stderr, "\n");
1097 if (range_check == range_check_on)
1098 return_to_top_level (RETURN_ERROR);
1102 /* This page contains miscellaneous functions */
1104 /* Return the language struct for a given language enum. */
1106 const struct language_defn *
1112 for (i = 0; i < languages_size; i++) {
1113 if (languages[i]->la_language == lang) {
1114 return languages[i];
1120 /* Return the language as a string */
1127 for (i = 0; i < languages_size; i++) {
1128 if (languages[i]->la_language == lang) {
1129 return languages[i]->la_name;
1136 set_check (ignore, from_tty)
1141 "\"set check\" must be followed by the name of a check subcommand.\n");
1142 help_list(setchecklist, "set check ", -1, gdb_stdout);
1146 show_check (ignore, from_tty)
1150 cmd_show_list(showchecklist, from_tty, "");
1153 /* Add a language to the set of known languages. */
1157 const struct language_defn *lang;
1159 if (lang->la_magic != LANG_MAGIC)
1161 fprintf_unfiltered(gdb_stderr, "Magic number of %s language struct wrong\n",
1168 languages_allocsize = DEFAULT_ALLOCSIZE;
1169 languages = (const struct language_defn **) xmalloc
1170 (languages_allocsize * sizeof (*languages));
1172 if (languages_size >= languages_allocsize)
1174 languages_allocsize *= 2;
1175 languages = (const struct language_defn **) xrealloc ((char *) languages,
1176 languages_allocsize * sizeof (*languages));
1178 languages[languages_size++] = lang;
1181 /* Define the language that is no language. */
1190 unk_lang_error (msg)
1193 error ("Attempted to parse an expression with unknown language");
1197 unk_lang_printchar (c, stream)
1201 error ("internal error - unimplemented function unk_lang_printchar called.");
1205 unk_lang_printstr (stream, string, length, force_ellipses)
1208 unsigned int length;
1211 error ("internal error - unimplemented function unk_lang_printstr called.");
1214 static struct type *
1215 unk_lang_create_fundamental_type (objfile, typeid)
1216 struct objfile *objfile;
1219 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1223 unk_lang_print_type (type, varstring, stream, show, level)
1230 error ("internal error - unimplemented function unk_lang_print_type called.");
1234 unk_lang_val_print (type, valaddr, address, stream, format, deref_ref,
1243 enum val_prettyprint pretty;
1245 error ("internal error - unimplemented function unk_lang_val_print called.");
1249 unk_lang_value_print (val, stream, format, pretty)
1253 enum val_prettyprint pretty;
1255 error ("internal error - unimplemented function unk_lang_value_print called.");
1258 static struct type ** const (unknown_builtin_types[]) = { 0 };
1259 static const struct op_print unk_op_print_tab[] = {
1260 {NULL, OP_NULL, PREC_NULL, 0}
1263 const struct language_defn unknown_language_defn = {
1266 &unknown_builtin_types[0],
1271 evaluate_subexp_standard,
1272 unk_lang_printchar, /* Print character constant */
1274 unk_lang_create_fundamental_type,
1275 unk_lang_print_type, /* Print a type using appropriate syntax */
1276 unk_lang_val_print, /* Print a value using appropriate syntax */
1277 unk_lang_value_print, /* Print a top-level value */
1278 {"", "", "", ""}, /* Binary format info */
1279 {"0%lo", "0", "o", ""}, /* Octal format info */
1280 {"%ld", "", "d", ""}, /* Decimal format info */
1281 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1282 unk_op_print_tab, /* expression operators for printing */
1283 1, /* c-style arrays */
1284 0, /* String lower bound */
1285 &builtin_type_char, /* Type of string elements */
1289 /* These two structs define fake entries for the "local" and "auto" options. */
1290 const struct language_defn auto_language_defn = {
1293 &unknown_builtin_types[0],
1298 evaluate_subexp_standard,
1299 unk_lang_printchar, /* Print character constant */
1301 unk_lang_create_fundamental_type,
1302 unk_lang_print_type, /* Print a type using appropriate syntax */
1303 unk_lang_val_print, /* Print a value using appropriate syntax */
1304 unk_lang_value_print, /* Print a top-level value */
1305 {"", "", "", ""}, /* Binary format info */
1306 {"0%lo", "0", "o", ""}, /* Octal format info */
1307 {"%ld", "", "d", ""}, /* Decimal format info */
1308 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1309 unk_op_print_tab, /* expression operators for printing */
1310 1, /* c-style arrays */
1311 0, /* String lower bound */
1312 &builtin_type_char, /* Type of string elements */
1316 const struct language_defn local_language_defn = {
1319 &unknown_builtin_types[0],
1324 evaluate_subexp_standard,
1325 unk_lang_printchar, /* Print character constant */
1327 unk_lang_create_fundamental_type,
1328 unk_lang_print_type, /* Print a type using appropriate syntax */
1329 unk_lang_val_print, /* Print a value using appropriate syntax */
1330 unk_lang_value_print, /* Print a top-level value */
1331 {"", "", "", ""}, /* Binary format info */
1332 {"0%lo", "0", "o", ""}, /* Octal format info */
1333 {"%ld", "", "d", ""}, /* Decimal format info */
1334 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1335 unk_op_print_tab, /* expression operators for printing */
1336 1, /* c-style arrays */
1337 0, /* String lower bound */
1338 &builtin_type_char, /* Type of string elements */
1342 /* Initialize the language routines */
1345 _initialize_language()
1347 struct cmd_list_element *set, *show;
1349 /* GDB commands for language specific stuff */
1351 set = add_set_cmd ("language", class_support, var_string_noescape,
1353 "Set the current source language.",
1355 show = add_show_from_set (set, &showlist);
1356 set->function.cfunc = set_language_command;
1357 show->function.cfunc = show_language_command;
1359 add_prefix_cmd ("check", no_class, set_check,
1360 "Set the status of the type/range checker",
1361 &setchecklist, "set check ", 0, &setlist);
1362 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1363 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1365 add_prefix_cmd ("check", no_class, show_check,
1366 "Show the status of the type/range checker",
1367 &showchecklist, "show check ", 0, &showlist);
1368 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1369 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1371 set = add_set_cmd ("type", class_support, var_string_noescape,
1373 "Set type checking. (on/warn/off/auto)",
1375 show = add_show_from_set (set, &showchecklist);
1376 set->function.cfunc = set_type_command;
1377 show->function.cfunc = show_type_command;
1379 set = add_set_cmd ("range", class_support, var_string_noescape,
1381 "Set range checking. (on/warn/off/auto)",
1383 show = add_show_from_set (set, &showchecklist);
1384 set->function.cfunc = set_range_command;
1385 show->function.cfunc = show_range_command;
1387 add_language (&unknown_language_defn);
1388 add_language (&local_language_defn);
1389 add_language (&auto_language_defn);
1391 language = savestring ("auto",strlen("auto"));
1392 range = savestring ("auto",strlen("auto"));
1393 type = savestring ("auto",strlen("auto"));
1395 /* Have the above take effect */
1397 set_language_command (language, 0);
1398 set_type_command (NULL, 0);
1399 set_range_command (NULL, 0);