1 /* Multiple source language support for GDB.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Contributed by the Department of Computer Science at the State University
5 of New York at Buffalo.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* This file contains functions that return things that are specific
25 to languages. Each function should examine current_language if necessary,
26 and return the appropriate result. */
28 /* FIXME: Most of these would be better organized as macros which
29 return data out of a "language-specific" struct pointer that is set
30 whenever the working language changes. That would be a lot faster. */
34 #include "gdb_string.h"
40 #include "expression.h"
43 #include "parser-defs.h"
46 extern void _initialize_language (void);
48 static void show_language_command (char *, int);
50 static void set_language_command (char *, int);
52 static void show_type_command (char *, int);
54 static void set_type_command (char *, int);
56 static void show_range_command (char *, int);
58 static void set_range_command (char *, int);
60 static void show_case_command (char *, int);
62 static void set_case_command (char *, int);
64 static void set_case_str (void);
66 static void set_range_str (void);
68 static void set_type_str (void);
70 static void set_lang_str (void);
72 static void unk_lang_error (char *);
74 static int unk_lang_parser (void);
76 static void show_check (char *, int);
78 static void set_check (char *, int);
80 static void set_type_range_case (void);
82 static void unk_lang_emit_char (int c, struct ui_file *stream, int quoter);
84 static void unk_lang_printchar (int c, struct ui_file *stream);
86 static void unk_lang_printstr (struct ui_file * stream, char *string,
87 unsigned int length, int width,
90 static struct type *unk_lang_create_fundamental_type (struct objfile *, int);
92 static void unk_lang_print_type (struct type *, char *, struct ui_file *,
95 static int unk_lang_val_print (struct type *, char *, int, CORE_ADDR,
96 struct ui_file *, int, int, int,
97 enum val_prettyprint);
99 static int unk_lang_value_print (value_ptr, struct ui_file *, int, enum val_prettyprint);
101 /* Forward declaration */
102 extern const struct language_defn unknown_language_defn;
103 extern char *warning_pre_print;
105 /* The current (default at startup) state of type and range checking.
106 (If the modes are set to "auto", though, these are changed based
107 on the default language at startup, and then again based on the
108 language of the first source file. */
110 enum range_mode range_mode = range_mode_auto;
111 enum range_check range_check = range_check_off;
112 enum type_mode type_mode = type_mode_auto;
113 enum type_check type_check = type_check_off;
114 enum case_mode case_mode = case_mode_auto;
115 enum case_sensitivity case_sensitivity = case_sensitive_on;
117 /* The current language and language_mode (see language.h) */
119 const struct language_defn *current_language = &unknown_language_defn;
120 enum language_mode language_mode = language_mode_auto;
122 /* The language that the user expects to be typing in (the language
123 of main(), or the last language we notified them about, or C). */
125 const struct language_defn *expected_language;
127 /* The list of supported languages. The list itself is malloc'd. */
129 static const struct language_defn **languages;
130 static unsigned languages_size;
131 static unsigned languages_allocsize;
132 #define DEFAULT_ALLOCSIZE 4
134 /* The "set language/type/range" commands all put stuff in these
135 buffers. This is to make them work as set/show commands. The
136 user's string is copied here, then the set_* commands look at
137 them and update them to something that looks nice when it is
140 static char *language;
143 static char *case_sensitive;
145 /* Warning issued when current_language and the language of the current
146 frame do not match. */
147 char lang_frame_mismatch_warn[] =
148 "Warning: the current language does not match this frame.";
151 /* This page contains the functions corresponding to GDB commands
152 and their helpers. */
154 /* Show command. Display a warning if the language set
155 does not match the frame. */
157 show_language_command (char *ignore, int from_tty)
159 enum language flang; /* The language of the current frame */
161 flang = get_frame_language ();
162 if (flang != language_unknown &&
163 language_mode == language_mode_manual &&
164 current_language->la_language != flang)
165 printf_filtered ("%s\n", lang_frame_mismatch_warn);
168 /* Set command. Change the current working language. */
170 set_language_command (char *ignore, int from_tty)
176 if (!language || !language[0])
178 printf_unfiltered ("The currently understood settings are:\n\n");
179 printf_unfiltered ("local or auto Automatic setting based on source file\n");
181 for (i = 0; i < languages_size; ++i)
183 /* Already dealt with these above. */
184 if (languages[i]->la_language == language_unknown
185 || languages[i]->la_language == language_auto)
188 /* FIXME for now assume that the human-readable name is just
189 a capitalization of the internal name. */
190 printf_unfiltered ("%-16s Use the %c%s language\n",
191 languages[i]->la_name,
192 /* Capitalize first letter of language
194 toupper (languages[i]->la_name[0]),
195 languages[i]->la_name + 1);
197 /* Restore the silly string. */
198 set_language (current_language->la_language);
202 /* Search the list of languages for a match. */
203 for (i = 0; i < languages_size; i++)
205 if (STREQ (languages[i]->la_name, language))
207 /* Found it! Go into manual mode, and use this language. */
208 if (languages[i]->la_language == language_auto)
210 /* Enter auto mode. Set to the current frame's language, if known. */
211 language_mode = language_mode_auto;
212 flang = get_frame_language ();
213 if (flang != language_unknown)
214 set_language (flang);
215 expected_language = current_language;
220 /* Enter manual mode. Set the specified language. */
221 language_mode = language_mode_manual;
222 current_language = languages[i];
223 set_type_range_case ();
225 expected_language = current_language;
231 /* Reset the language (esp. the global string "language") to the
233 err_lang = savestring (language, strlen (language));
234 make_cleanup (xfree, err_lang); /* Free it after error */
235 set_language (current_language->la_language);
236 error ("Unknown language `%s'.", err_lang);
239 /* Show command. Display a warning if the type setting does
240 not match the current language. */
242 show_type_command (char *ignore, int from_tty)
244 if (type_check != current_language->la_type_check)
246 "Warning: the current type check setting does not match the language.\n");
249 /* Set command. Change the setting for type checking. */
251 set_type_command (char *ignore, int from_tty)
253 if (STREQ (type, "on"))
255 type_check = type_check_on;
256 type_mode = type_mode_manual;
258 else if (STREQ (type, "warn"))
260 type_check = type_check_warn;
261 type_mode = type_mode_manual;
263 else if (STREQ (type, "off"))
265 type_check = type_check_off;
266 type_mode = type_mode_manual;
268 else if (STREQ (type, "auto"))
270 type_mode = type_mode_auto;
271 set_type_range_case ();
272 /* Avoid hitting the set_type_str call below. We
273 did it in set_type_range_case. */
278 warning ("Unrecognized type check setting: \"%s\"", type);
281 show_type_command ((char *) NULL, from_tty);
284 /* Show command. Display a warning if the range setting does
285 not match the current language. */
287 show_range_command (char *ignore, int from_tty)
290 if (range_check != current_language->la_range_check)
292 "Warning: the current range check setting does not match the language.\n");
295 /* Set command. Change the setting for range checking. */
297 set_range_command (char *ignore, int from_tty)
299 if (STREQ (range, "on"))
301 range_check = range_check_on;
302 range_mode = range_mode_manual;
304 else if (STREQ (range, "warn"))
306 range_check = range_check_warn;
307 range_mode = range_mode_manual;
309 else if (STREQ (range, "off"))
311 range_check = range_check_off;
312 range_mode = range_mode_manual;
314 else if (STREQ (range, "auto"))
316 range_mode = range_mode_auto;
317 set_type_range_case ();
318 /* Avoid hitting the set_range_str call below. We
319 did it in set_type_range_case. */
324 warning ("Unrecognized range check setting: \"%s\"", range);
327 show_range_command ((char *) 0, from_tty);
330 /* Show command. Display a warning if the case sensitivity setting does
331 not match the current language. */
333 show_case_command (char *ignore, int from_tty)
335 if (case_sensitivity != current_language->la_case_sensitivity)
337 "Warning: the current case sensitivity setting does not match the language.\n");
340 /* Set command. Change the setting for case sensitivity. */
342 set_case_command (char *ignore, int from_tty)
344 if (STREQ (case_sensitive, "on"))
346 case_sensitivity = case_sensitive_on;
347 case_mode = case_mode_manual;
349 else if (STREQ (case_sensitive, "off"))
351 case_sensitivity = case_sensitive_off;
352 case_mode = case_mode_manual;
354 else if (STREQ (case_sensitive, "auto"))
356 case_mode = case_mode_auto;
357 set_type_range_case ();
358 /* Avoid hitting the set_case_str call below. We
359 did it in set_type_range_case. */
364 warning ("Unrecognized case-sensitive setting: \"%s\"", case_sensitive);
367 show_case_command ((char *) NULL, from_tty);
370 /* Set the status of range and type checking and case sensitivity based on
371 the current modes and the current language.
372 If SHOW is non-zero, then print out the current language,
373 type and range checking status. */
375 set_type_range_case (void)
378 if (range_mode == range_mode_auto)
379 range_check = current_language->la_range_check;
381 if (type_mode == type_mode_auto)
382 type_check = current_language->la_type_check;
384 if (case_mode == case_mode_auto)
385 case_sensitivity = current_language->la_case_sensitivity;
392 /* Set current language to (enum language) LANG. Returns previous language. */
395 set_language (enum language lang)
398 enum language prev_language;
400 prev_language = current_language->la_language;
402 for (i = 0; i < languages_size; i++)
404 if (languages[i]->la_language == lang)
406 current_language = languages[i];
407 set_type_range_case ();
413 return prev_language;
416 /* This page contains functions that update the global vars
417 language, type and range. */
425 if (language_mode == language_mode_auto)
426 prefix = "auto; currently ";
428 language = concat (prefix, current_language->la_name, NULL);
434 char *tmp = NULL, *prefix = "";
438 if (type_mode == type_mode_auto)
439 prefix = "auto; currently ";
449 case type_check_warn:
453 error ("Unrecognized type check setting.");
456 type = concat (prefix, tmp, NULL);
462 char *tmp, *pref = "";
464 if (range_mode == range_mode_auto)
465 pref = "auto; currently ";
472 case range_check_off:
475 case range_check_warn:
479 error ("Unrecognized range check setting.");
484 range = concat (pref, tmp, NULL);
490 char *tmp = NULL, *prefix = "";
492 if (case_mode==case_mode_auto)
493 prefix = "auto; currently ";
495 switch (case_sensitivity)
497 case case_sensitive_on:
500 case case_sensitive_off:
504 error ("Unrecognized case-sensitive setting.");
507 xfree (case_sensitive);
508 case_sensitive = concat (prefix, tmp, NULL);
511 /* Print out the current language settings: language, range and
512 type checking. If QUIETLY, print only what has changed. */
515 language_info (int quietly)
517 if (quietly && expected_language == current_language)
520 expected_language = current_language;
521 printf_unfiltered ("Current language: %s\n", language);
522 show_language_command ((char *) 0, 1);
526 printf_unfiltered ("Type checking: %s\n", type);
527 show_type_command ((char *) 0, 1);
528 printf_unfiltered ("Range checking: %s\n", range);
529 show_range_command ((char *) 0, 1);
530 printf_unfiltered ("Case sensitivity: %s\n", case_sensitive);
531 show_case_command ((char *) 0, 1);
535 /* Return the result of a binary operation. */
537 #if 0 /* Currently unused */
540 binop_result_type (value_ptr v1, value_ptr v2)
543 struct type *t1 = check_typedef (VALUE_TYPE (v1));
544 struct type *t2 = check_typedef (VALUE_TYPE (v2));
546 int l1 = TYPE_LENGTH (t1);
547 int l2 = TYPE_LENGTH (t2);
549 switch (current_language->la_language)
553 if (TYPE_CODE (t1) == TYPE_CODE_FLT)
554 return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
555 VALUE_TYPE (v2) : VALUE_TYPE (v1);
556 else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
557 return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
558 VALUE_TYPE (v1) : VALUE_TYPE (v2);
559 else if (TYPE_UNSIGNED (t1) && l1 > l2)
560 return VALUE_TYPE (v1);
561 else if (TYPE_UNSIGNED (t2) && l2 > l1)
562 return VALUE_TYPE (v2);
563 else /* Both are signed. Result is the longer type */
564 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
567 /* If we are doing type-checking, l1 should equal l2, so this is
569 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
572 error ("Missing Chill support in function binop_result_check."); /*FIXME */
574 internal_error (__FILE__, __LINE__, "failed internal consistency check");
575 return (struct type *) 0; /* For lint */
581 /* This page contains functions that return format strings for
582 printf for printing out numbers in different formats */
584 /* Returns the appropriate printf format for hexadecimal
587 local_hex_format_custom (char *pre)
589 static char form[50];
591 strcpy (form, local_hex_format_prefix ());
594 strcat (form, local_hex_format_specifier ());
595 strcat (form, local_hex_format_suffix ());
600 /* FIXME: cagney/2000-03-04: This function does not appear to be used.
601 It can be deleted once 5.0 has been released. */
602 /* FIXME: cagney/2000-03-04: This code assumes that the compiler
603 supports ``long long''. */
604 /* Converts a number to hexadecimal (without leading "0x") and stores it in a
605 static string. Returns a pointer to this string. */
608 longest_raw_hex_string (LONGEST num)
610 static char res_longest_raw_hex_string[50];
611 long long ll = num; /* MERGEBUG ?? see below */
612 res_longest_raw_hex_string[0] = 0;
613 /* MERGEBUG ?? As a quick fix I am replacing this with sprintf
614 strcat_address_numeric (num, 0, res_longest_raw_hex_string, 50);
617 sprintf (res_longest_raw_hex_string, "%llx", ll);
618 return res_longest_raw_hex_string;
622 /* Converts a number to hexadecimal and stores it in a static
623 string. Returns a pointer to this string. */
625 local_hex_string (unsigned long num)
629 sprintf (res, local_hex_format (), num);
633 /* Converts a LONGEST number to hexadecimal and stores it in a static
634 string. Returns a pointer to this string. */
636 longest_local_hex_string (LONGEST num)
638 return longest_local_hex_string_custom (num, "l");
641 /* Converts a number to custom hexadecimal and stores it in a static
642 string. Returns a pointer to this string. */
644 local_hex_string_custom (unsigned long num, char *pre)
648 sprintf (res, local_hex_format_custom (pre), num);
652 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
653 string. Returns a pointer to this string. Note that the width parameter
654 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
657 longest_local_hex_string_custom (LONGEST num, char *width)
659 #define RESULT_BUF_LEN 50
660 static char res2[RESULT_BUF_LEN];
661 char format[RESULT_BUF_LEN];
662 #if !defined (PRINTF_HAS_LONG_LONG)
666 char *pad_char; /* string with one character */
669 char temp_nbr_buf[RESULT_BUF_LEN];
672 #ifndef CC_HAS_LONG_LONG
673 /* If there is no long long, then LONGEST should be just long and we
674 can use local_hex_string_custom
676 return local_hex_string_custom ((unsigned long) num, width);
677 #elif defined (PRINTF_HAS_LONG_LONG)
678 /* Just use printf. */
679 strcpy (format, local_hex_format_prefix ()); /* 0x */
680 strcat (format, "%");
681 strcat (format, width); /* e.g. "08l" */
682 strcat (format, "l"); /* need "ll" for long long */
683 strcat (format, local_hex_format_specifier ()); /* "x" */
684 strcat (format, local_hex_format_suffix ()); /* "" */
685 sprintf (res2, format, num);
687 #else /* !defined (PRINTF_HAS_LONG_LONG) */
688 /* Use strcat_address_numeric to print the number into a string, then
689 build the result string from local_hex_format_prefix, padding and
690 the hex representation as indicated by "width". */
693 /* With use_local == 0, we don't get the leading "0x" prefix. */
694 /* MERGEBUG ?? As a quick fix I am replacing this call to
695 strcat_address_numeric with sprintf
696 strcat_address_numeric(num, 0, temp_nbr_buf, RESULT_BUF_LEN);
701 sprintf (temp_nbr_buf, "%llx", ll);
707 if (*parse_ptr == '-')
712 if (*parse_ptr == '0')
716 pad_char = "0"; /* If padding is on the right, it is blank */
718 field_width = atoi (parse_ptr);
719 num_len = strlen (temp_nbr_buf);
720 num_pad_chars = field_width - strlen (temp_nbr_buf); /* possibly negative */
722 if (strlen (local_hex_format_prefix ()) + num_len + num_pad_chars
723 >= RESULT_BUF_LEN) /* paranoia */
724 internal_error (__FILE__, __LINE__,
725 "longest_local_hex_string_custom: insufficient space to store result");
727 strcpy (res2, local_hex_format_prefix ());
730 while (num_pad_chars > 0)
732 strcat (res2, pad_char);
736 strcat (res2, temp_nbr_buf);
739 while (num_pad_chars > 0)
741 strcat (res2, pad_char);
748 } /* longest_local_hex_string_custom */
750 /* Returns the appropriate printf format for octal
753 local_octal_format_custom (char *pre)
755 static char form[50];
757 strcpy (form, local_octal_format_prefix ());
760 strcat (form, local_octal_format_specifier ());
761 strcat (form, local_octal_format_suffix ());
765 /* Returns the appropriate printf format for decimal numbers. */
767 local_decimal_format_custom (char *pre)
769 static char form[50];
771 strcpy (form, local_decimal_format_prefix ());
774 strcat (form, local_decimal_format_specifier ());
775 strcat (form, local_decimal_format_suffix ());
780 /* This page contains functions that are used in type/range checking.
781 They all return zero if the type/range check fails.
783 It is hoped that these will make extending GDB to parse different
784 languages a little easier. These are primarily used in eval.c when
785 evaluating expressions and making sure that their types are correct.
786 Instead of having a mess of conjucted/disjuncted expressions in an "if",
787 the ideas of type can be wrapped up in the following functions.
789 Note that some of them are not currently dependent upon which language
790 is currently being parsed. For example, floats are the same in
791 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
792 TYPE_CODE_FLT), while booleans are different. */
794 /* Returns non-zero if its argument is a simple type. This is the same for
795 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
796 and thus will never cause the failure of the test. */
798 simple_type (struct type *type)
800 CHECK_TYPEDEF (type);
801 switch (TYPE_CODE (type))
807 case TYPE_CODE_RANGE:
816 /* Returns non-zero if its argument is of an ordered type.
817 An ordered type is one in which the elements can be tested for the
818 properties of "greater than", "less than", etc, or for which the
819 operations "increment" or "decrement" make sense. */
821 ordered_type (struct type *type)
823 CHECK_TYPEDEF (type);
824 switch (TYPE_CODE (type))
830 case TYPE_CODE_RANGE:
838 /* Returns non-zero if the two types are the same */
840 same_type (struct type *arg1, struct type *arg2)
842 CHECK_TYPEDEF (type);
843 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
844 /* One is structured and one isn't */
846 else if (structured_type (arg1) && structured_type (arg2))
848 else if (numeric_type (arg1) && numeric_type (arg2))
849 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
850 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
856 /* Returns non-zero if the type is integral */
858 integral_type (struct type *type)
860 CHECK_TYPEDEF (type);
861 switch (current_language->la_language)
865 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
866 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
868 case language_pascal:
869 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
871 error ("Missing Chill support in function integral_type."); /*FIXME */
873 error ("Language not supported.");
877 /* Returns non-zero if the value is numeric */
879 numeric_type (struct type *type)
881 CHECK_TYPEDEF (type);
882 switch (TYPE_CODE (type))
893 /* Returns non-zero if the value is a character type */
895 character_type (struct type *type)
897 CHECK_TYPEDEF (type);
898 switch (current_language->la_language)
902 case language_pascal:
903 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
907 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
908 TYPE_LENGTH (type) == sizeof (char)
915 /* Returns non-zero if the value is a string type */
917 string_type (struct type *type)
919 CHECK_TYPEDEF (type);
920 switch (current_language->la_language)
924 case language_pascal:
925 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
929 /* C does not have distinct string type. */
936 /* Returns non-zero if the value is a boolean type */
938 boolean_type (struct type *type)
940 CHECK_TYPEDEF (type);
941 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
943 switch (current_language->la_language)
947 /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL
948 for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */
949 if (TYPE_CODE (type) == TYPE_CODE_INT)
957 /* Returns non-zero if the value is a floating-point type */
959 float_type (struct type *type)
961 CHECK_TYPEDEF (type);
962 return TYPE_CODE (type) == TYPE_CODE_FLT;
965 /* Returns non-zero if the value is a pointer type */
967 pointer_type (struct type *type)
969 return TYPE_CODE (type) == TYPE_CODE_PTR ||
970 TYPE_CODE (type) == TYPE_CODE_REF;
973 /* Returns non-zero if the value is a structured type */
975 structured_type (struct type *type)
977 CHECK_TYPEDEF (type);
978 switch (current_language->la_language)
982 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
983 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
984 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
985 case language_pascal:
986 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
987 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
988 (TYPE_CODE(type) == TYPE_CODE_SET) ||
989 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
991 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
992 (TYPE_CODE (type) == TYPE_CODE_SET) ||
993 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
995 error ("Missing Chill support in function structured_type."); /*FIXME */
1003 lang_bool_type (void)
1007 switch (current_language->la_language)
1009 case language_chill:
1010 return builtin_type_chill_bool;
1011 case language_fortran:
1012 sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL);
1015 type = SYMBOL_TYPE (sym);
1016 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1019 return builtin_type_f_logical_s2;
1020 case language_cplus:
1021 case language_pascal:
1022 if (current_language->la_language==language_cplus)
1023 {sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL);}
1025 {sym = lookup_symbol ("boolean", NULL, VAR_NAMESPACE, NULL, NULL);}
1028 type = SYMBOL_TYPE (sym);
1029 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1032 return builtin_type_bool;
1034 sym = lookup_symbol ("boolean", NULL, VAR_NAMESPACE, NULL, NULL);
1037 type = SYMBOL_TYPE (sym);
1038 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1041 return java_boolean_type;
1043 return builtin_type_int;
1047 /* This page contains functions that return info about
1048 (struct value) values used in GDB. */
1050 /* Returns non-zero if the value VAL represents a true value. */
1052 value_true (value_ptr val)
1054 /* It is possible that we should have some sort of error if a non-boolean
1055 value is used in this context. Possibly dependent on some kind of
1056 "boolean-checking" option like range checking. But it should probably
1057 not depend on the language except insofar as is necessary to identify
1058 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
1059 should be an error, probably). */
1060 return !value_logical_not (val);
1063 /* Returns non-zero if the operator OP is defined on
1064 the values ARG1 and ARG2. */
1066 #if 0 /* Currently unused */
1069 binop_type_check (value_ptr arg1, value_ptr arg2, int op)
1071 struct type *t1, *t2;
1073 /* If we're not checking types, always return success. */
1077 t1 = VALUE_TYPE (arg1);
1079 t2 = VALUE_TYPE (arg2);
1087 if ((numeric_type (t1) && pointer_type (t2)) ||
1088 (pointer_type (t1) && numeric_type (t2)))
1090 warning ("combining pointer and integer.\n");
1096 if (!numeric_type (t1) || !numeric_type (t2))
1097 type_op_error ("Arguments to %s must be numbers.", op);
1098 else if (!same_type (t1, t2))
1099 type_op_error ("Arguments to %s must be of the same type.", op);
1102 case BINOP_LOGICAL_AND:
1103 case BINOP_LOGICAL_OR:
1104 if (!boolean_type (t1) || !boolean_type (t2))
1105 type_op_error ("Arguments to %s must be of boolean type.", op);
1109 if ((pointer_type (t1) && !(pointer_type (t2) || integral_type (t2))) ||
1110 (pointer_type (t2) && !(pointer_type (t1) || integral_type (t1))))
1111 type_op_error ("A pointer can only be compared to an integer or pointer.", op);
1112 else if ((pointer_type (t1) && integral_type (t2)) ||
1113 (integral_type (t1) && pointer_type (t2)))
1115 warning ("combining integer and pointer.\n");
1118 else if (!simple_type (t1) || !simple_type (t2))
1119 type_op_error ("Arguments to %s must be of simple type.", op);
1120 else if (!same_type (t1, t2))
1121 type_op_error ("Arguments to %s must be of the same type.", op);
1126 if (!integral_type (t1) || !integral_type (t2))
1127 type_op_error ("Arguments to %s must be of integral type.", op);
1134 if (!ordered_type (t1) || !ordered_type (t2))
1135 type_op_error ("Arguments to %s must be of ordered type.", op);
1136 else if (!same_type (t1, t2))
1137 type_op_error ("Arguments to %s must be of the same type.", op);
1141 if (pointer_type (t1) && !integral_type (t2))
1142 type_op_error ("A pointer can only be assigned an integer.", op);
1143 else if (pointer_type (t1) && integral_type (t2))
1145 warning ("combining integer and pointer.");
1148 else if (!simple_type (t1) || !simple_type (t2))
1149 type_op_error ("Arguments to %s must be of simple type.", op);
1150 else if (!same_type (t1, t2))
1151 type_op_error ("Arguments to %s must be of the same type.", op);
1155 /* FIXME: Needs to handle bitstrings as well. */
1156 if (!(string_type (t1) || character_type (t1) || integral_type (t1))
1157 || !(string_type (t2) || character_type (t2) || integral_type (t2)))
1158 type_op_error ("Arguments to %s must be strings or characters.", op);
1161 /* Unary checks -- arg2 is null */
1163 case UNOP_LOGICAL_NOT:
1164 if (!boolean_type (t1))
1165 type_op_error ("Argument to %s must be of boolean type.", op);
1170 if (!numeric_type (t1))
1171 type_op_error ("Argument to %s must be of numeric type.", op);
1175 if (integral_type (t1))
1177 warning ("combining pointer and integer.\n");
1180 else if (!pointer_type (t1))
1181 type_op_error ("Argument to %s must be a pointer.", op);
1184 case UNOP_PREINCREMENT:
1185 case UNOP_POSTINCREMENT:
1186 case UNOP_PREDECREMENT:
1187 case UNOP_POSTDECREMENT:
1188 if (!ordered_type (t1))
1189 type_op_error ("Argument to %s must be of an ordered type.", op);
1193 /* Ok. The following operators have different meanings in
1194 different languages. */
1195 switch (current_language->la_language)
1199 case language_cplus:
1203 if (!numeric_type (t1) || !numeric_type (t2))
1204 type_op_error ("Arguments to %s must be numbers.", op);
1215 if (!float_type (t1) || !float_type (t2))
1216 type_op_error ("Arguments to %s must be floating point numbers.", op);
1219 if (!integral_type (t1) || !integral_type (t2))
1220 type_op_error ("Arguments to %s must be of integral type.", op);
1226 case language_pascal:
1230 if (!float_type(t1) && !float_type(t2))
1231 type_op_error ("Arguments to %s must be floating point numbers.",op);
1234 if (!integral_type(t1) || !integral_type(t2))
1235 type_op_error ("Arguments to %s must be of integral type.",op);
1241 case language_chill:
1242 error ("Missing Chill support in function binop_type_check."); /*FIXME */
1252 /* This page contains functions for the printing out of
1253 error messages that occur during type- and range-
1256 /* Prints the format string FMT with the operator as a string
1257 corresponding to the opcode OP. If FATAL is non-zero, then
1258 this is an error and error () is called. Otherwise, it is
1259 a warning and printf() is called. */
1261 op_error (char *fmt, enum exp_opcode op, int fatal)
1264 error (fmt, op_string (op));
1267 warning (fmt, op_string (op));
1271 /* These are called when a language fails a type- or range-check.
1272 The first argument should be a printf()-style format string, and
1273 the rest of the arguments should be its arguments. If
1274 [type|range]_check is [type|range]_check_on, then return_to_top_level()
1275 is called in the style of error (). Otherwise, the message is prefixed
1276 by the value of warning_pre_print and we do not return to the top level. */
1279 type_error (char *string,...)
1282 va_start (args, string);
1284 if (type_check == type_check_warn)
1285 fprintf_filtered (gdb_stderr, warning_pre_print);
1289 vfprintf_filtered (gdb_stderr, string, args);
1290 fprintf_filtered (gdb_stderr, "\n");
1292 if (type_check == type_check_on)
1293 return_to_top_level (RETURN_ERROR);
1297 range_error (char *string,...)
1300 va_start (args, string);
1302 if (range_check == range_check_warn)
1303 fprintf_filtered (gdb_stderr, warning_pre_print);
1307 vfprintf_filtered (gdb_stderr, string, args);
1308 fprintf_filtered (gdb_stderr, "\n");
1310 if (range_check == range_check_on)
1311 return_to_top_level (RETURN_ERROR);
1315 /* This page contains miscellaneous functions */
1317 /* Return the language enum for a given language string. */
1320 language_enum (char *str)
1324 for (i = 0; i < languages_size; i++)
1325 if (STREQ (languages[i]->la_name, str))
1326 return languages[i]->la_language;
1328 return language_unknown;
1331 /* Return the language struct for a given language enum. */
1333 const struct language_defn *
1334 language_def (enum language lang)
1338 for (i = 0; i < languages_size; i++)
1340 if (languages[i]->la_language == lang)
1342 return languages[i];
1348 /* Return the language as a string */
1350 language_str (enum language lang)
1354 for (i = 0; i < languages_size; i++)
1356 if (languages[i]->la_language == lang)
1358 return languages[i]->la_name;
1365 set_check (char *ignore, int from_tty)
1368 "\"set check\" must be followed by the name of a check subcommand.\n");
1369 help_list (setchecklist, "set check ", -1, gdb_stdout);
1373 show_check (char *ignore, int from_tty)
1375 cmd_show_list (showchecklist, from_tty, "");
1378 /* Add a language to the set of known languages. */
1381 add_language (const struct language_defn *lang)
1383 if (lang->la_magic != LANG_MAGIC)
1385 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
1387 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1392 languages_allocsize = DEFAULT_ALLOCSIZE;
1393 languages = (const struct language_defn **) xmalloc
1394 (languages_allocsize * sizeof (*languages));
1396 if (languages_size >= languages_allocsize)
1398 languages_allocsize *= 2;
1399 languages = (const struct language_defn **) xrealloc ((char *) languages,
1400 languages_allocsize * sizeof (*languages));
1402 languages[languages_size++] = lang;
1405 /* Define the language that is no language. */
1408 unk_lang_parser (void)
1414 unk_lang_error (char *msg)
1416 error ("Attempted to parse an expression with unknown language");
1420 unk_lang_emit_char (register int c, struct ui_file *stream, int quoter)
1422 error ("internal error - unimplemented function unk_lang_emit_char called.");
1426 unk_lang_printchar (register int c, struct ui_file *stream)
1428 error ("internal error - unimplemented function unk_lang_printchar called.");
1432 unk_lang_printstr (struct ui_file *stream, char *string, unsigned int length,
1433 int width, int force_ellipses)
1435 error ("internal error - unimplemented function unk_lang_printstr called.");
1438 static struct type *
1439 unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
1441 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1445 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1446 int show, int level)
1448 error ("internal error - unimplemented function unk_lang_print_type called.");
1452 unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
1453 CORE_ADDR address, struct ui_file *stream, int format,
1454 int deref_ref, int recurse, enum val_prettyprint pretty)
1456 error ("internal error - unimplemented function unk_lang_val_print called.");
1460 unk_lang_value_print (value_ptr val, struct ui_file *stream, int format,
1461 enum val_prettyprint pretty)
1463 error ("internal error - unimplemented function unk_lang_value_print called.");
1466 static struct type **CONST_PTR (unknown_builtin_types[]) =
1470 static const struct op_print unk_op_print_tab[] =
1472 {NULL, OP_NULL, PREC_NULL, 0}
1475 const struct language_defn unknown_language_defn =
1479 &unknown_builtin_types[0],
1485 evaluate_subexp_standard,
1486 unk_lang_printchar, /* Print character constant */
1489 unk_lang_create_fundamental_type,
1490 unk_lang_print_type, /* Print a type using appropriate syntax */
1491 unk_lang_val_print, /* Print a value using appropriate syntax */
1492 unk_lang_value_print, /* Print a top-level value */
1493 {"", "", "", ""}, /* Binary format info */
1494 {"0%lo", "0", "o", ""}, /* Octal format info */
1495 {"%ld", "", "d", ""}, /* Decimal format info */
1496 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1497 unk_op_print_tab, /* expression operators for printing */
1498 1, /* c-style arrays */
1499 0, /* String lower bound */
1500 &builtin_type_char, /* Type of string elements */
1504 /* These two structs define fake entries for the "local" and "auto" options. */
1505 const struct language_defn auto_language_defn =
1509 &unknown_builtin_types[0],
1515 evaluate_subexp_standard,
1516 unk_lang_printchar, /* Print character constant */
1519 unk_lang_create_fundamental_type,
1520 unk_lang_print_type, /* Print a type using appropriate syntax */
1521 unk_lang_val_print, /* Print a value using appropriate syntax */
1522 unk_lang_value_print, /* Print a top-level value */
1523 {"", "", "", ""}, /* Binary format info */
1524 {"0%lo", "0", "o", ""}, /* Octal format info */
1525 {"%ld", "", "d", ""}, /* Decimal format info */
1526 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1527 unk_op_print_tab, /* expression operators for printing */
1528 1, /* c-style arrays */
1529 0, /* String lower bound */
1530 &builtin_type_char, /* Type of string elements */
1534 const struct language_defn local_language_defn =
1538 &unknown_builtin_types[0],
1544 evaluate_subexp_standard,
1545 unk_lang_printchar, /* Print character constant */
1548 unk_lang_create_fundamental_type,
1549 unk_lang_print_type, /* Print a type using appropriate syntax */
1550 unk_lang_val_print, /* Print a value using appropriate syntax */
1551 unk_lang_value_print, /* Print a top-level value */
1552 {"", "", "", ""}, /* Binary format info */
1553 {"0%lo", "0", "o", ""}, /* Octal format info */
1554 {"%ld", "", "d", ""}, /* Decimal format info */
1555 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1556 unk_op_print_tab, /* expression operators for printing */
1557 1, /* c-style arrays */
1558 0, /* String lower bound */
1559 &builtin_type_char, /* Type of string elements */
1563 /* Initialize the language routines */
1566 _initialize_language (void)
1568 struct cmd_list_element *set, *show;
1570 /* GDB commands for language specific stuff */
1572 set = add_set_cmd ("language", class_support, var_string_noescape,
1574 "Set the current source language.",
1576 show = add_show_from_set (set, &showlist);
1577 set->function.cfunc = set_language_command;
1578 show->function.cfunc = show_language_command;
1580 add_prefix_cmd ("check", no_class, set_check,
1581 "Set the status of the type/range checker",
1582 &setchecklist, "set check ", 0, &setlist);
1583 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1584 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1586 add_prefix_cmd ("check", no_class, show_check,
1587 "Show the status of the type/range checker",
1588 &showchecklist, "show check ", 0, &showlist);
1589 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1590 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1592 set = add_set_cmd ("type", class_support, var_string_noescape,
1594 "Set type checking. (on/warn/off/auto)",
1596 show = add_show_from_set (set, &showchecklist);
1597 set->function.cfunc = set_type_command;
1598 show->function.cfunc = show_type_command;
1600 set = add_set_cmd ("range", class_support, var_string_noescape,
1602 "Set range checking. (on/warn/off/auto)",
1604 show = add_show_from_set (set, &showchecklist);
1605 set->function.cfunc = set_range_command;
1606 show->function.cfunc = show_range_command;
1608 set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
1609 (char *) &case_sensitive,
1610 "Set case sensitivity in name search. (on/off/auto)\n\
1611 For Fortran the default is off; for other languages the default is on.",
1613 show = add_show_from_set (set, &showlist);
1614 set->function.cfunc = set_case_command;
1615 show->function.cfunc = show_case_command;
1617 add_language (&unknown_language_defn);
1618 add_language (&local_language_defn);
1619 add_language (&auto_language_defn);
1621 language = savestring ("auto", strlen ("auto"));
1622 type = savestring ("auto", strlen ("auto"));
1623 range = savestring ("auto", strlen ("auto"));
1624 case_sensitive = savestring ("auto",strlen ("auto"));
1626 /* Have the above take effect */
1627 set_language (language_auto);