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 (struct value *, 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 (struct value *v1, struct value *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 ());
599 /* Converts a number to hexadecimal and stores it in a static
600 string. Returns a pointer to this string. */
602 local_hex_string (unsigned long num)
606 sprintf (res, local_hex_format (), num);
610 /* Converts a LONGEST number to hexadecimal and stores it in a static
611 string. Returns a pointer to this string. */
613 longest_local_hex_string (LONGEST num)
615 return longest_local_hex_string_custom (num, "l");
618 /* Converts a number to custom hexadecimal and stores it in a static
619 string. Returns a pointer to this string. */
621 local_hex_string_custom (unsigned long num, char *pre)
625 sprintf (res, local_hex_format_custom (pre), num);
629 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
630 string. Returns a pointer to this string. Note that the width parameter
631 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
634 longest_local_hex_string_custom (LONGEST num, char *width)
636 #define RESULT_BUF_LEN 50
637 static char res2[RESULT_BUF_LEN];
638 char format[RESULT_BUF_LEN];
639 #if !defined (PRINTF_HAS_LONG_LONG)
643 char *pad_char; /* string with one character */
646 char temp_nbr_buf[RESULT_BUF_LEN];
649 #ifndef CC_HAS_LONG_LONG
650 /* If there is no long long, then LONGEST should be just long and we
651 can use local_hex_string_custom
653 return local_hex_string_custom ((unsigned long) num, width);
654 #elif defined (PRINTF_HAS_LONG_LONG)
655 /* Just use printf. */
656 strcpy (format, local_hex_format_prefix ()); /* 0x */
657 strcat (format, "%");
658 strcat (format, width); /* e.g. "08l" */
659 strcat (format, "l"); /* need "ll" for long long */
660 strcat (format, local_hex_format_specifier ()); /* "x" */
661 strcat (format, local_hex_format_suffix ()); /* "" */
662 sprintf (res2, format, num);
664 #else /* !defined (PRINTF_HAS_LONG_LONG) */
665 /* Use strcat_address_numeric to print the number into a string, then
666 build the result string from local_hex_format_prefix, padding and
667 the hex representation as indicated by "width". */
670 /* With use_local == 0, we don't get the leading "0x" prefix. */
671 /* MERGEBUG ?? As a quick fix I am replacing this call to
672 strcat_address_numeric with sprintf
673 strcat_address_numeric(num, 0, temp_nbr_buf, RESULT_BUF_LEN);
678 sprintf (temp_nbr_buf, "%llx", ll);
684 if (*parse_ptr == '-')
689 if (*parse_ptr == '0')
693 pad_char = "0"; /* If padding is on the right, it is blank */
695 field_width = atoi (parse_ptr);
696 num_len = strlen (temp_nbr_buf);
697 num_pad_chars = field_width - strlen (temp_nbr_buf); /* possibly negative */
699 if (strlen (local_hex_format_prefix ()) + num_len + num_pad_chars
700 >= RESULT_BUF_LEN) /* paranoia */
701 internal_error (__FILE__, __LINE__,
702 "longest_local_hex_string_custom: insufficient space to store result");
704 strcpy (res2, local_hex_format_prefix ());
707 while (num_pad_chars > 0)
709 strcat (res2, pad_char);
713 strcat (res2, temp_nbr_buf);
716 while (num_pad_chars > 0)
718 strcat (res2, pad_char);
725 } /* longest_local_hex_string_custom */
727 /* Returns the appropriate printf format for octal
730 local_octal_format_custom (char *pre)
732 static char form[50];
734 strcpy (form, local_octal_format_prefix ());
737 strcat (form, local_octal_format_specifier ());
738 strcat (form, local_octal_format_suffix ());
742 /* Returns the appropriate printf format for decimal numbers. */
744 local_decimal_format_custom (char *pre)
746 static char form[50];
748 strcpy (form, local_decimal_format_prefix ());
751 strcat (form, local_decimal_format_specifier ());
752 strcat (form, local_decimal_format_suffix ());
757 /* This page contains functions that are used in type/range checking.
758 They all return zero if the type/range check fails.
760 It is hoped that these will make extending GDB to parse different
761 languages a little easier. These are primarily used in eval.c when
762 evaluating expressions and making sure that their types are correct.
763 Instead of having a mess of conjucted/disjuncted expressions in an "if",
764 the ideas of type can be wrapped up in the following functions.
766 Note that some of them are not currently dependent upon which language
767 is currently being parsed. For example, floats are the same in
768 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
769 TYPE_CODE_FLT), while booleans are different. */
771 /* Returns non-zero if its argument is a simple type. This is the same for
772 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
773 and thus will never cause the failure of the test. */
775 simple_type (struct type *type)
777 CHECK_TYPEDEF (type);
778 switch (TYPE_CODE (type))
784 case TYPE_CODE_RANGE:
793 /* Returns non-zero if its argument is of an ordered type.
794 An ordered type is one in which the elements can be tested for the
795 properties of "greater than", "less than", etc, or for which the
796 operations "increment" or "decrement" make sense. */
798 ordered_type (struct type *type)
800 CHECK_TYPEDEF (type);
801 switch (TYPE_CODE (type))
807 case TYPE_CODE_RANGE:
815 /* Returns non-zero if the two types are the same */
817 same_type (struct type *arg1, struct type *arg2)
819 CHECK_TYPEDEF (type);
820 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
821 /* One is structured and one isn't */
823 else if (structured_type (arg1) && structured_type (arg2))
825 else if (numeric_type (arg1) && numeric_type (arg2))
826 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
827 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
833 /* Returns non-zero if the type is integral */
835 integral_type (struct type *type)
837 CHECK_TYPEDEF (type);
838 switch (current_language->la_language)
842 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
843 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
845 case language_pascal:
846 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
848 error ("Missing Chill support in function integral_type."); /*FIXME */
850 error ("Language not supported.");
854 /* Returns non-zero if the value is numeric */
856 numeric_type (struct type *type)
858 CHECK_TYPEDEF (type);
859 switch (TYPE_CODE (type))
870 /* Returns non-zero if the value is a character type */
872 character_type (struct type *type)
874 CHECK_TYPEDEF (type);
875 switch (current_language->la_language)
879 case language_pascal:
880 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
884 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
885 TYPE_LENGTH (type) == sizeof (char)
892 /* Returns non-zero if the value is a string type */
894 string_type (struct type *type)
896 CHECK_TYPEDEF (type);
897 switch (current_language->la_language)
901 case language_pascal:
902 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
906 /* C does not have distinct string type. */
913 /* Returns non-zero if the value is a boolean type */
915 boolean_type (struct type *type)
917 CHECK_TYPEDEF (type);
918 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
920 switch (current_language->la_language)
924 /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL
925 for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */
926 if (TYPE_CODE (type) == TYPE_CODE_INT)
934 /* Returns non-zero if the value is a floating-point type */
936 float_type (struct type *type)
938 CHECK_TYPEDEF (type);
939 return TYPE_CODE (type) == TYPE_CODE_FLT;
942 /* Returns non-zero if the value is a pointer type */
944 pointer_type (struct type *type)
946 return TYPE_CODE (type) == TYPE_CODE_PTR ||
947 TYPE_CODE (type) == TYPE_CODE_REF;
950 /* Returns non-zero if the value is a structured type */
952 structured_type (struct type *type)
954 CHECK_TYPEDEF (type);
955 switch (current_language->la_language)
959 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
960 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
961 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
962 case language_pascal:
963 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
964 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
965 (TYPE_CODE(type) == TYPE_CODE_SET) ||
966 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
968 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
969 (TYPE_CODE (type) == TYPE_CODE_SET) ||
970 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
972 error ("Missing Chill support in function structured_type."); /*FIXME */
980 lang_bool_type (void)
984 switch (current_language->la_language)
987 return builtin_type_chill_bool;
988 case language_fortran:
989 sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL);
992 type = SYMBOL_TYPE (sym);
993 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
996 return builtin_type_f_logical_s2;
998 case language_pascal:
999 if (current_language->la_language==language_cplus)
1000 {sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL);}
1002 {sym = lookup_symbol ("boolean", NULL, VAR_NAMESPACE, NULL, NULL);}
1005 type = SYMBOL_TYPE (sym);
1006 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1009 return builtin_type_bool;
1011 sym = lookup_symbol ("boolean", NULL, VAR_NAMESPACE, NULL, NULL);
1014 type = SYMBOL_TYPE (sym);
1015 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1018 return java_boolean_type;
1020 return builtin_type_int;
1024 /* This page contains functions that return info about
1025 (struct value) values used in GDB. */
1027 /* Returns non-zero if the value VAL represents a true value. */
1029 value_true (struct value *val)
1031 /* It is possible that we should have some sort of error if a non-boolean
1032 value is used in this context. Possibly dependent on some kind of
1033 "boolean-checking" option like range checking. But it should probably
1034 not depend on the language except insofar as is necessary to identify
1035 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
1036 should be an error, probably). */
1037 return !value_logical_not (val);
1040 /* Returns non-zero if the operator OP is defined on
1041 the values ARG1 and ARG2. */
1043 #if 0 /* Currently unused */
1046 binop_type_check (struct value *arg1, struct value *arg2, int op)
1048 struct type *t1, *t2;
1050 /* If we're not checking types, always return success. */
1054 t1 = VALUE_TYPE (arg1);
1056 t2 = VALUE_TYPE (arg2);
1064 if ((numeric_type (t1) && pointer_type (t2)) ||
1065 (pointer_type (t1) && numeric_type (t2)))
1067 warning ("combining pointer and integer.\n");
1073 if (!numeric_type (t1) || !numeric_type (t2))
1074 type_op_error ("Arguments to %s must be numbers.", op);
1075 else if (!same_type (t1, t2))
1076 type_op_error ("Arguments to %s must be of the same type.", op);
1079 case BINOP_LOGICAL_AND:
1080 case BINOP_LOGICAL_OR:
1081 if (!boolean_type (t1) || !boolean_type (t2))
1082 type_op_error ("Arguments to %s must be of boolean type.", op);
1086 if ((pointer_type (t1) && !(pointer_type (t2) || integral_type (t2))) ||
1087 (pointer_type (t2) && !(pointer_type (t1) || integral_type (t1))))
1088 type_op_error ("A pointer can only be compared to an integer or pointer.", op);
1089 else if ((pointer_type (t1) && integral_type (t2)) ||
1090 (integral_type (t1) && pointer_type (t2)))
1092 warning ("combining integer and pointer.\n");
1095 else if (!simple_type (t1) || !simple_type (t2))
1096 type_op_error ("Arguments to %s must be of simple type.", op);
1097 else if (!same_type (t1, t2))
1098 type_op_error ("Arguments to %s must be of the same type.", op);
1103 if (!integral_type (t1) || !integral_type (t2))
1104 type_op_error ("Arguments to %s must be of integral type.", op);
1111 if (!ordered_type (t1) || !ordered_type (t2))
1112 type_op_error ("Arguments to %s must be of ordered type.", op);
1113 else if (!same_type (t1, t2))
1114 type_op_error ("Arguments to %s must be of the same type.", op);
1118 if (pointer_type (t1) && !integral_type (t2))
1119 type_op_error ("A pointer can only be assigned an integer.", op);
1120 else if (pointer_type (t1) && integral_type (t2))
1122 warning ("combining integer and pointer.");
1125 else if (!simple_type (t1) || !simple_type (t2))
1126 type_op_error ("Arguments to %s must be of simple type.", op);
1127 else if (!same_type (t1, t2))
1128 type_op_error ("Arguments to %s must be of the same type.", op);
1132 /* FIXME: Needs to handle bitstrings as well. */
1133 if (!(string_type (t1) || character_type (t1) || integral_type (t1))
1134 || !(string_type (t2) || character_type (t2) || integral_type (t2)))
1135 type_op_error ("Arguments to %s must be strings or characters.", op);
1138 /* Unary checks -- arg2 is null */
1140 case UNOP_LOGICAL_NOT:
1141 if (!boolean_type (t1))
1142 type_op_error ("Argument to %s must be of boolean type.", op);
1147 if (!numeric_type (t1))
1148 type_op_error ("Argument to %s must be of numeric type.", op);
1152 if (integral_type (t1))
1154 warning ("combining pointer and integer.\n");
1157 else if (!pointer_type (t1))
1158 type_op_error ("Argument to %s must be a pointer.", op);
1161 case UNOP_PREINCREMENT:
1162 case UNOP_POSTINCREMENT:
1163 case UNOP_PREDECREMENT:
1164 case UNOP_POSTDECREMENT:
1165 if (!ordered_type (t1))
1166 type_op_error ("Argument to %s must be of an ordered type.", op);
1170 /* Ok. The following operators have different meanings in
1171 different languages. */
1172 switch (current_language->la_language)
1176 case language_cplus:
1180 if (!numeric_type (t1) || !numeric_type (t2))
1181 type_op_error ("Arguments to %s must be numbers.", op);
1192 if (!float_type (t1) || !float_type (t2))
1193 type_op_error ("Arguments to %s must be floating point numbers.", op);
1196 if (!integral_type (t1) || !integral_type (t2))
1197 type_op_error ("Arguments to %s must be of integral type.", op);
1203 case language_pascal:
1207 if (!float_type(t1) && !float_type(t2))
1208 type_op_error ("Arguments to %s must be floating point numbers.",op);
1211 if (!integral_type(t1) || !integral_type(t2))
1212 type_op_error ("Arguments to %s must be of integral type.",op);
1218 case language_chill:
1219 error ("Missing Chill support in function binop_type_check."); /*FIXME */
1229 /* This page contains functions for the printing out of
1230 error messages that occur during type- and range-
1233 /* Prints the format string FMT with the operator as a string
1234 corresponding to the opcode OP. If FATAL is non-zero, then
1235 this is an error and error () is called. Otherwise, it is
1236 a warning and printf() is called. */
1238 op_error (char *fmt, enum exp_opcode op, int fatal)
1241 error (fmt, op_string (op));
1244 warning (fmt, op_string (op));
1248 /* These are called when a language fails a type- or range-check.
1249 The first argument should be a printf()-style format string, and
1250 the rest of the arguments should be its arguments. If
1251 [type|range]_check is [type|range]_check_on, then return_to_top_level()
1252 is called in the style of error (). Otherwise, the message is prefixed
1253 by the value of warning_pre_print and we do not return to the top level. */
1256 type_error (char *string,...)
1259 va_start (args, string);
1261 if (type_check == type_check_warn)
1262 fprintf_filtered (gdb_stderr, warning_pre_print);
1266 vfprintf_filtered (gdb_stderr, string, args);
1267 fprintf_filtered (gdb_stderr, "\n");
1269 if (type_check == type_check_on)
1270 return_to_top_level (RETURN_ERROR);
1274 range_error (char *string,...)
1277 va_start (args, string);
1279 if (range_check == range_check_warn)
1280 fprintf_filtered (gdb_stderr, warning_pre_print);
1284 vfprintf_filtered (gdb_stderr, string, args);
1285 fprintf_filtered (gdb_stderr, "\n");
1287 if (range_check == range_check_on)
1288 return_to_top_level (RETURN_ERROR);
1292 /* This page contains miscellaneous functions */
1294 /* Return the language enum for a given language string. */
1297 language_enum (char *str)
1301 for (i = 0; i < languages_size; i++)
1302 if (STREQ (languages[i]->la_name, str))
1303 return languages[i]->la_language;
1305 return language_unknown;
1308 /* Return the language struct for a given language enum. */
1310 const struct language_defn *
1311 language_def (enum language lang)
1315 for (i = 0; i < languages_size; i++)
1317 if (languages[i]->la_language == lang)
1319 return languages[i];
1325 /* Return the language as a string */
1327 language_str (enum language lang)
1331 for (i = 0; i < languages_size; i++)
1333 if (languages[i]->la_language == lang)
1335 return languages[i]->la_name;
1342 set_check (char *ignore, int from_tty)
1345 "\"set check\" must be followed by the name of a check subcommand.\n");
1346 help_list (setchecklist, "set check ", -1, gdb_stdout);
1350 show_check (char *ignore, int from_tty)
1352 cmd_show_list (showchecklist, from_tty, "");
1355 /* Add a language to the set of known languages. */
1358 add_language (const struct language_defn *lang)
1360 if (lang->la_magic != LANG_MAGIC)
1362 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
1364 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1369 languages_allocsize = DEFAULT_ALLOCSIZE;
1370 languages = (const struct language_defn **) xmalloc
1371 (languages_allocsize * sizeof (*languages));
1373 if (languages_size >= languages_allocsize)
1375 languages_allocsize *= 2;
1376 languages = (const struct language_defn **) xrealloc ((char *) languages,
1377 languages_allocsize * sizeof (*languages));
1379 languages[languages_size++] = lang;
1382 /* Define the language that is no language. */
1385 unk_lang_parser (void)
1391 unk_lang_error (char *msg)
1393 error ("Attempted to parse an expression with unknown language");
1397 unk_lang_emit_char (register int c, struct ui_file *stream, int quoter)
1399 error ("internal error - unimplemented function unk_lang_emit_char called.");
1403 unk_lang_printchar (register int c, struct ui_file *stream)
1405 error ("internal error - unimplemented function unk_lang_printchar called.");
1409 unk_lang_printstr (struct ui_file *stream, char *string, unsigned int length,
1410 int width, int force_ellipses)
1412 error ("internal error - unimplemented function unk_lang_printstr called.");
1415 static struct type *
1416 unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
1418 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1422 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1423 int show, int level)
1425 error ("internal error - unimplemented function unk_lang_print_type called.");
1429 unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
1430 CORE_ADDR address, struct ui_file *stream, int format,
1431 int deref_ref, int recurse, enum val_prettyprint pretty)
1433 error ("internal error - unimplemented function unk_lang_val_print called.");
1437 unk_lang_value_print (struct value *val, struct ui_file *stream, int format,
1438 enum val_prettyprint pretty)
1440 error ("internal error - unimplemented function unk_lang_value_print called.");
1443 static struct type **CONST_PTR (unknown_builtin_types[]) =
1447 static const struct op_print unk_op_print_tab[] =
1449 {NULL, OP_NULL, PREC_NULL, 0}
1452 const struct language_defn unknown_language_defn =
1456 &unknown_builtin_types[0],
1462 evaluate_subexp_standard,
1463 unk_lang_printchar, /* Print character constant */
1466 unk_lang_create_fundamental_type,
1467 unk_lang_print_type, /* Print a type using appropriate syntax */
1468 unk_lang_val_print, /* Print a value using appropriate syntax */
1469 unk_lang_value_print, /* Print a top-level value */
1470 {"", "", "", ""}, /* Binary format info */
1471 {"0%lo", "0", "o", ""}, /* Octal format info */
1472 {"%ld", "", "d", ""}, /* Decimal format info */
1473 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1474 unk_op_print_tab, /* expression operators for printing */
1475 1, /* c-style arrays */
1476 0, /* String lower bound */
1477 &builtin_type_char, /* Type of string elements */
1481 /* These two structs define fake entries for the "local" and "auto" options. */
1482 const struct language_defn auto_language_defn =
1486 &unknown_builtin_types[0],
1492 evaluate_subexp_standard,
1493 unk_lang_printchar, /* Print character constant */
1496 unk_lang_create_fundamental_type,
1497 unk_lang_print_type, /* Print a type using appropriate syntax */
1498 unk_lang_val_print, /* Print a value using appropriate syntax */
1499 unk_lang_value_print, /* Print a top-level value */
1500 {"", "", "", ""}, /* Binary format info */
1501 {"0%lo", "0", "o", ""}, /* Octal format info */
1502 {"%ld", "", "d", ""}, /* Decimal format info */
1503 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1504 unk_op_print_tab, /* expression operators for printing */
1505 1, /* c-style arrays */
1506 0, /* String lower bound */
1507 &builtin_type_char, /* Type of string elements */
1511 const struct language_defn local_language_defn =
1515 &unknown_builtin_types[0],
1521 evaluate_subexp_standard,
1522 unk_lang_printchar, /* Print character constant */
1525 unk_lang_create_fundamental_type,
1526 unk_lang_print_type, /* Print a type using appropriate syntax */
1527 unk_lang_val_print, /* Print a value using appropriate syntax */
1528 unk_lang_value_print, /* Print a top-level value */
1529 {"", "", "", ""}, /* Binary format info */
1530 {"0%lo", "0", "o", ""}, /* Octal format info */
1531 {"%ld", "", "d", ""}, /* Decimal format info */
1532 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1533 unk_op_print_tab, /* expression operators for printing */
1534 1, /* c-style arrays */
1535 0, /* String lower bound */
1536 &builtin_type_char, /* Type of string elements */
1540 /* Initialize the language routines */
1543 _initialize_language (void)
1545 struct cmd_list_element *set, *show;
1547 /* GDB commands for language specific stuff */
1549 set = add_set_cmd ("language", class_support, var_string_noescape,
1551 "Set the current source language.",
1553 show = add_show_from_set (set, &showlist);
1554 set->function.cfunc = set_language_command;
1555 show->function.cfunc = show_language_command;
1557 add_prefix_cmd ("check", no_class, set_check,
1558 "Set the status of the type/range checker",
1559 &setchecklist, "set check ", 0, &setlist);
1560 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1561 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1563 add_prefix_cmd ("check", no_class, show_check,
1564 "Show the status of the type/range checker",
1565 &showchecklist, "show check ", 0, &showlist);
1566 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1567 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1569 set = add_set_cmd ("type", class_support, var_string_noescape,
1571 "Set type checking. (on/warn/off/auto)",
1573 show = add_show_from_set (set, &showchecklist);
1574 set->function.cfunc = set_type_command;
1575 show->function.cfunc = show_type_command;
1577 set = add_set_cmd ("range", class_support, var_string_noescape,
1579 "Set range checking. (on/warn/off/auto)",
1581 show = add_show_from_set (set, &showchecklist);
1582 set->function.cfunc = set_range_command;
1583 show->function.cfunc = show_range_command;
1585 set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
1586 (char *) &case_sensitive,
1587 "Set case sensitivity in name search. (on/off/auto)\n\
1588 For Fortran the default is off; for other languages the default is on.",
1590 show = add_show_from_set (set, &showlist);
1591 set->function.cfunc = set_case_command;
1592 show->function.cfunc = show_case_command;
1594 add_language (&unknown_language_defn);
1595 add_language (&local_language_defn);
1596 add_language (&auto_language_defn);
1598 language = savestring ("auto", strlen ("auto"));
1599 type = savestring ("auto", strlen ("auto"));
1600 range = savestring ("auto", strlen ("auto"));
1601 case_sensitive = savestring ("auto",strlen ("auto"));
1603 /* Have the above take effect */
1604 set_language (language_auto);