1 /* Multiple source language support for GDB.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
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
;
104 /* The current (default at startup) state of type and range checking.
105 (If the modes are set to "auto", though, these are changed based
106 on the default language at startup, and then again based on the
107 language of the first source file. */
109 enum range_mode range_mode
= range_mode_auto
;
110 enum range_check range_check
= range_check_off
;
111 enum type_mode type_mode
= type_mode_auto
;
112 enum type_check type_check
= type_check_off
;
113 enum case_mode case_mode
= case_mode_auto
;
114 enum case_sensitivity case_sensitivity
= case_sensitive_on
;
116 /* The current language and language_mode (see language.h) */
118 const struct language_defn
*current_language
= &unknown_language_defn
;
119 enum language_mode language_mode
= language_mode_auto
;
121 /* The language that the user expects to be typing in (the language
122 of main(), or the last language we notified them about, or C). */
124 const struct language_defn
*expected_language
;
126 /* The list of supported languages. The list itself is malloc'd. */
128 static const struct language_defn
**languages
;
129 static unsigned languages_size
;
130 static unsigned languages_allocsize
;
131 #define DEFAULT_ALLOCSIZE 4
133 /* The "set language/type/range" commands all put stuff in these
134 buffers. This is to make them work as set/show commands. The
135 user's string is copied here, then the set_* commands look at
136 them and update them to something that looks nice when it is
139 static char *language
;
142 static char *case_sensitive
;
144 /* Warning issued when current_language and the language of the current
145 frame do not match. */
146 char lang_frame_mismatch_warn
[] =
147 "Warning: the current language does not match this frame.";
150 /* This page contains the functions corresponding to GDB commands
151 and their helpers. */
153 /* Show command. Display a warning if the language set
154 does not match the frame. */
156 show_language_command (char *ignore
, int from_tty
)
158 enum language flang
; /* The language of the current frame */
160 flang
= get_frame_language ();
161 if (flang
!= language_unknown
&&
162 language_mode
== language_mode_manual
&&
163 current_language
->la_language
!= flang
)
164 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
167 /* Set command. Change the current working language. */
169 set_language_command (char *ignore
, int from_tty
)
175 if (!language
|| !language
[0])
177 printf_unfiltered ("The currently understood settings are:\n\n");
178 printf_unfiltered ("local or auto Automatic setting based on source file\n");
180 for (i
= 0; i
< languages_size
; ++i
)
182 /* Already dealt with these above. */
183 if (languages
[i
]->la_language
== language_unknown
184 || languages
[i
]->la_language
== language_auto
)
187 /* FIXME for now assume that the human-readable name is just
188 a capitalization of the internal name. */
189 printf_unfiltered ("%-16s Use the %c%s language\n",
190 languages
[i
]->la_name
,
191 /* Capitalize first letter of language
193 toupper (languages
[i
]->la_name
[0]),
194 languages
[i
]->la_name
+ 1);
196 /* Restore the silly string. */
197 set_language (current_language
->la_language
);
201 /* Search the list of languages for a match. */
202 for (i
= 0; i
< languages_size
; i
++)
204 if (STREQ (languages
[i
]->la_name
, language
))
206 /* Found it! Go into manual mode, and use this language. */
207 if (languages
[i
]->la_language
== language_auto
)
209 /* Enter auto mode. Set to the current frame's language, if known. */
210 language_mode
= language_mode_auto
;
211 flang
= get_frame_language ();
212 if (flang
!= language_unknown
)
213 set_language (flang
);
214 expected_language
= current_language
;
219 /* Enter manual mode. Set the specified language. */
220 language_mode
= language_mode_manual
;
221 current_language
= languages
[i
];
222 set_type_range_case ();
224 expected_language
= current_language
;
230 /* Reset the language (esp. the global string "language") to the
232 err_lang
= savestring (language
, strlen (language
));
233 make_cleanup (xfree
, err_lang
); /* Free it after error */
234 set_language (current_language
->la_language
);
235 error ("Unknown language `%s'.", err_lang
);
238 /* Show command. Display a warning if the type setting does
239 not match the current language. */
241 show_type_command (char *ignore
, int from_tty
)
243 if (type_check
!= current_language
->la_type_check
)
245 "Warning: the current type check setting does not match the language.\n");
248 /* Set command. Change the setting for type checking. */
250 set_type_command (char *ignore
, int from_tty
)
252 if (STREQ (type
, "on"))
254 type_check
= type_check_on
;
255 type_mode
= type_mode_manual
;
257 else if (STREQ (type
, "warn"))
259 type_check
= type_check_warn
;
260 type_mode
= type_mode_manual
;
262 else if (STREQ (type
, "off"))
264 type_check
= type_check_off
;
265 type_mode
= type_mode_manual
;
267 else if (STREQ (type
, "auto"))
269 type_mode
= type_mode_auto
;
270 set_type_range_case ();
271 /* Avoid hitting the set_type_str call below. We
272 did it in set_type_range_case. */
277 warning ("Unrecognized type check setting: \"%s\"", type
);
280 show_type_command ((char *) NULL
, from_tty
);
283 /* Show command. Display a warning if the range setting does
284 not match the current language. */
286 show_range_command (char *ignore
, int from_tty
)
289 if (range_check
!= current_language
->la_range_check
)
291 "Warning: the current range check setting does not match the language.\n");
294 /* Set command. Change the setting for range checking. */
296 set_range_command (char *ignore
, int from_tty
)
298 if (STREQ (range
, "on"))
300 range_check
= range_check_on
;
301 range_mode
= range_mode_manual
;
303 else if (STREQ (range
, "warn"))
305 range_check
= range_check_warn
;
306 range_mode
= range_mode_manual
;
308 else if (STREQ (range
, "off"))
310 range_check
= range_check_off
;
311 range_mode
= range_mode_manual
;
313 else if (STREQ (range
, "auto"))
315 range_mode
= range_mode_auto
;
316 set_type_range_case ();
317 /* Avoid hitting the set_range_str call below. We
318 did it in set_type_range_case. */
323 warning ("Unrecognized range check setting: \"%s\"", range
);
326 show_range_command ((char *) 0, from_tty
);
329 /* Show command. Display a warning if the case sensitivity setting does
330 not match the current language. */
332 show_case_command (char *ignore
, int from_tty
)
334 if (case_sensitivity
!= current_language
->la_case_sensitivity
)
336 "Warning: the current case sensitivity setting does not match the language.\n");
339 /* Set command. Change the setting for case sensitivity. */
341 set_case_command (char *ignore
, int from_tty
)
343 if (STREQ (case_sensitive
, "on"))
345 case_sensitivity
= case_sensitive_on
;
346 case_mode
= case_mode_manual
;
348 else if (STREQ (case_sensitive
, "off"))
350 case_sensitivity
= case_sensitive_off
;
351 case_mode
= case_mode_manual
;
353 else if (STREQ (case_sensitive
, "auto"))
355 case_mode
= case_mode_auto
;
356 set_type_range_case ();
357 /* Avoid hitting the set_case_str call below. We
358 did it in set_type_range_case. */
363 warning ("Unrecognized case-sensitive setting: \"%s\"", case_sensitive
);
366 show_case_command ((char *) NULL
, from_tty
);
369 /* Set the status of range and type checking and case sensitivity based on
370 the current modes and the current language.
371 If SHOW is non-zero, then print out the current language,
372 type and range checking status. */
374 set_type_range_case (void)
377 if (range_mode
== range_mode_auto
)
378 range_check
= current_language
->la_range_check
;
380 if (type_mode
== type_mode_auto
)
381 type_check
= current_language
->la_type_check
;
383 if (case_mode
== case_mode_auto
)
384 case_sensitivity
= current_language
->la_case_sensitivity
;
391 /* Set current language to (enum language) LANG. Returns previous language. */
394 set_language (enum language lang
)
397 enum language prev_language
;
399 prev_language
= current_language
->la_language
;
401 for (i
= 0; i
< languages_size
; i
++)
403 if (languages
[i
]->la_language
== lang
)
405 current_language
= languages
[i
];
406 set_type_range_case ();
412 return prev_language
;
415 /* This page contains functions that update the global vars
416 language, type and range. */
424 if (language_mode
== language_mode_auto
)
425 prefix
= "auto; currently ";
427 language
= concat (prefix
, current_language
->la_name
, NULL
);
433 char *tmp
= NULL
, *prefix
= "";
437 if (type_mode
== type_mode_auto
)
438 prefix
= "auto; currently ";
448 case type_check_warn
:
452 error ("Unrecognized type check setting.");
455 type
= concat (prefix
, tmp
, NULL
);
461 char *tmp
, *pref
= "";
463 if (range_mode
== range_mode_auto
)
464 pref
= "auto; currently ";
471 case range_check_off
:
474 case range_check_warn
:
478 error ("Unrecognized range check setting.");
483 range
= concat (pref
, tmp
, NULL
);
489 char *tmp
= NULL
, *prefix
= "";
491 if (case_mode
==case_mode_auto
)
492 prefix
= "auto; currently ";
494 switch (case_sensitivity
)
496 case case_sensitive_on
:
499 case case_sensitive_off
:
503 error ("Unrecognized case-sensitive setting.");
506 xfree (case_sensitive
);
507 case_sensitive
= concat (prefix
, tmp
, NULL
);
510 /* Print out the current language settings: language, range and
511 type checking. If QUIETLY, print only what has changed. */
514 language_info (int quietly
)
516 if (quietly
&& expected_language
== current_language
)
519 expected_language
= current_language
;
520 printf_unfiltered ("Current language: %s\n", language
);
521 show_language_command ((char *) 0, 1);
525 printf_unfiltered ("Type checking: %s\n", type
);
526 show_type_command ((char *) 0, 1);
527 printf_unfiltered ("Range checking: %s\n", range
);
528 show_range_command ((char *) 0, 1);
529 printf_unfiltered ("Case sensitivity: %s\n", case_sensitive
);
530 show_case_command ((char *) 0, 1);
534 /* Return the result of a binary operation. */
536 #if 0 /* Currently unused */
539 binop_result_type (struct value
*v1
, struct value
*v2
)
542 struct type
*t1
= check_typedef (VALUE_TYPE (v1
));
543 struct type
*t2
= check_typedef (VALUE_TYPE (v2
));
545 int l1
= TYPE_LENGTH (t1
);
546 int l2
= TYPE_LENGTH (t2
);
548 switch (current_language
->la_language
)
552 if (TYPE_CODE (t1
) == TYPE_CODE_FLT
)
553 return TYPE_CODE (t2
) == TYPE_CODE_FLT
&& l2
> l1
?
554 VALUE_TYPE (v2
) : VALUE_TYPE (v1
);
555 else if (TYPE_CODE (t2
) == TYPE_CODE_FLT
)
556 return TYPE_CODE (t1
) == TYPE_CODE_FLT
&& l1
> l2
?
557 VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
558 else if (TYPE_UNSIGNED (t1
) && l1
> l2
)
559 return VALUE_TYPE (v1
);
560 else if (TYPE_UNSIGNED (t2
) && l2
> l1
)
561 return VALUE_TYPE (v2
);
562 else /* Both are signed. Result is the longer type */
563 return l1
> l2
? VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
566 /* If we are doing type-checking, l1 should equal l2, so this is
568 return l1
> l2
? VALUE_TYPE (v1
) : VALUE_TYPE (v2
);
570 /* OBSOLETE case language_chill: */
571 /* OBSOLETE error ("Missing Chill support in function binop_result_check."); */ /*FIXME */
573 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
574 return (struct type
*) 0; /* For lint */
580 /* This page contains functions that return format strings for
581 printf for printing out numbers in different formats */
583 /* Returns the appropriate printf format for hexadecimal
586 local_hex_format_custom (char *pre
)
588 static char form
[50];
590 strcpy (form
, local_hex_format_prefix ());
593 strcat (form
, local_hex_format_specifier ());
594 strcat (form
, local_hex_format_suffix ());
598 /* Converts a LONGEST to custom hexadecimal and stores it in a static
599 string. Returns a pointer to this string. */
601 local_hex_string (LONGEST num
)
603 return local_hex_string_custom (num
, "l");
606 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
607 string. Returns a pointer to this string. Note that the width parameter
608 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
611 local_hex_string_custom (LONGEST num
, char *width
)
613 #define RESULT_BUF_LEN 50
614 static char res2
[RESULT_BUF_LEN
];
615 char format
[RESULT_BUF_LEN
];
619 char *pad_char
; /* string with one character */
622 char temp_nbr_buf
[RESULT_BUF_LEN
];
624 /* Use phex_nz to print the number into a string, then
625 build the result string from local_hex_format_prefix, padding and
626 the hex representation as indicated by "width". */
627 strcpy (temp_nbr_buf
, phex_nz (num
, sizeof (num
)));
632 if (*parse_ptr
== '-')
637 if (*parse_ptr
== '0')
641 pad_char
= "0"; /* If padding is on the right, it is blank */
643 field_width
= atoi (parse_ptr
);
644 num_len
= strlen (temp_nbr_buf
);
645 num_pad_chars
= field_width
- strlen (temp_nbr_buf
); /* possibly negative */
647 if (strlen (local_hex_format_prefix ()) + num_len
+ num_pad_chars
648 >= RESULT_BUF_LEN
) /* paranoia */
649 internal_error (__FILE__
, __LINE__
,
650 "local_hex_string_custom: insufficient space to store result");
652 strcpy (res2
, local_hex_format_prefix ());
655 while (num_pad_chars
> 0)
657 strcat (res2
, pad_char
);
661 strcat (res2
, temp_nbr_buf
);
664 while (num_pad_chars
> 0)
666 strcat (res2
, pad_char
);
672 } /* local_hex_string_custom */
674 /* Returns the appropriate printf format for octal
677 local_octal_format_custom (char *pre
)
679 static char form
[50];
681 strcpy (form
, local_octal_format_prefix ());
684 strcat (form
, local_octal_format_specifier ());
685 strcat (form
, local_octal_format_suffix ());
689 /* Returns the appropriate printf format for decimal numbers. */
691 local_decimal_format_custom (char *pre
)
693 static char form
[50];
695 strcpy (form
, local_decimal_format_prefix ());
698 strcat (form
, local_decimal_format_specifier ());
699 strcat (form
, local_decimal_format_suffix ());
704 /* This page contains functions that are used in type/range checking.
705 They all return zero if the type/range check fails.
707 It is hoped that these will make extending GDB to parse different
708 languages a little easier. These are primarily used in eval.c when
709 evaluating expressions and making sure that their types are correct.
710 Instead of having a mess of conjucted/disjuncted expressions in an "if",
711 the ideas of type can be wrapped up in the following functions.
713 Note that some of them are not currently dependent upon which language
714 is currently being parsed. For example, floats are the same in
715 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
716 TYPE_CODE_FLT), while booleans are different. */
718 /* Returns non-zero if its argument is a simple type. This is the same for
719 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
720 and thus will never cause the failure of the test. */
722 simple_type (struct type
*type
)
724 CHECK_TYPEDEF (type
);
725 switch (TYPE_CODE (type
))
731 case TYPE_CODE_RANGE
:
740 /* Returns non-zero if its argument is of an ordered type.
741 An ordered type is one in which the elements can be tested for the
742 properties of "greater than", "less than", etc, or for which the
743 operations "increment" or "decrement" make sense. */
745 ordered_type (struct type
*type
)
747 CHECK_TYPEDEF (type
);
748 switch (TYPE_CODE (type
))
754 case TYPE_CODE_RANGE
:
762 /* Returns non-zero if the two types are the same */
764 same_type (struct type
*arg1
, struct type
*arg2
)
766 CHECK_TYPEDEF (type
);
767 if (structured_type (arg1
) ? !structured_type (arg2
) : structured_type (arg2
))
768 /* One is structured and one isn't */
770 else if (structured_type (arg1
) && structured_type (arg2
))
772 else if (numeric_type (arg1
) && numeric_type (arg2
))
773 return (TYPE_CODE (arg2
) == TYPE_CODE (arg1
)) &&
774 (TYPE_UNSIGNED (arg1
) == TYPE_UNSIGNED (arg2
))
780 /* Returns non-zero if the type is integral */
782 integral_type (struct type
*type
)
784 CHECK_TYPEDEF (type
);
785 switch (current_language
->la_language
)
789 return (TYPE_CODE (type
) != TYPE_CODE_INT
) &&
790 (TYPE_CODE (type
) != TYPE_CODE_ENUM
) ? 0 : 1;
792 case language_pascal
:
793 return TYPE_CODE (type
) != TYPE_CODE_INT
? 0 : 1;
794 /* OBSOLETE case language_chill: */
795 /* OBSOLETE error ("Missing Chill support in function integral_type."); *//*FIXME */
797 error ("Language not supported.");
801 /* Returns non-zero if the value is numeric */
803 numeric_type (struct type
*type
)
805 CHECK_TYPEDEF (type
);
806 switch (TYPE_CODE (type
))
817 /* Returns non-zero if the value is a character type */
819 character_type (struct type
*type
)
821 CHECK_TYPEDEF (type
);
822 switch (current_language
->la_language
)
824 /* OBSOLETE case language_chill: */
826 case language_pascal
:
827 return TYPE_CODE (type
) != TYPE_CODE_CHAR
? 0 : 1;
831 return (TYPE_CODE (type
) == TYPE_CODE_INT
) &&
832 TYPE_LENGTH (type
) == sizeof (char)
839 /* Returns non-zero if the value is a string type */
841 string_type (struct type
*type
)
843 CHECK_TYPEDEF (type
);
844 switch (current_language
->la_language
)
846 /* OBSOLETE case language_chill: */
848 case language_pascal
:
849 return TYPE_CODE (type
) != TYPE_CODE_STRING
? 0 : 1;
853 /* C does not have distinct string type. */
860 /* Returns non-zero if the value is a boolean type */
862 boolean_type (struct type
*type
)
864 CHECK_TYPEDEF (type
);
865 if (TYPE_CODE (type
) == TYPE_CODE_BOOL
)
867 switch (current_language
->la_language
)
871 /* Might be more cleanly handled by having a
872 TYPE_CODE_INT_NOT_BOOL for (OBSOLETE) CHILL and such
873 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
874 if (TYPE_CODE (type
) == TYPE_CODE_INT
)
882 /* Returns non-zero if the value is a floating-point type */
884 float_type (struct type
*type
)
886 CHECK_TYPEDEF (type
);
887 return TYPE_CODE (type
) == TYPE_CODE_FLT
;
890 /* Returns non-zero if the value is a pointer type */
892 pointer_type (struct type
*type
)
894 return TYPE_CODE (type
) == TYPE_CODE_PTR
||
895 TYPE_CODE (type
) == TYPE_CODE_REF
;
898 /* Returns non-zero if the value is a structured type */
900 structured_type (struct type
*type
)
902 CHECK_TYPEDEF (type
);
903 switch (current_language
->la_language
)
907 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
908 (TYPE_CODE (type
) == TYPE_CODE_UNION
) ||
909 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
910 case language_pascal
:
911 return (TYPE_CODE(type
) == TYPE_CODE_STRUCT
) ||
912 (TYPE_CODE(type
) == TYPE_CODE_UNION
) ||
913 (TYPE_CODE(type
) == TYPE_CODE_SET
) ||
914 (TYPE_CODE(type
) == TYPE_CODE_ARRAY
);
916 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
917 (TYPE_CODE (type
) == TYPE_CODE_SET
) ||
918 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
919 /* OBSOLETE case language_chill: */
920 /* OBSOLETE error ("Missing Chill support in function structured_type."); *//*FIXME */
928 lang_bool_type (void)
932 switch (current_language
->la_language
)
935 /* OBSOLETE case language_chill: */
936 /* OBSOLETE return builtin_type_chill_bool; */
938 case language_fortran
:
939 sym
= lookup_symbol ("logical", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
942 type
= SYMBOL_TYPE (sym
);
943 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
946 return builtin_type_f_logical_s2
;
948 case language_pascal
:
949 if (current_language
->la_language
==language_cplus
)
950 {sym
= lookup_symbol ("bool", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
952 {sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
955 type
= SYMBOL_TYPE (sym
);
956 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
959 return builtin_type_bool
;
961 sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
964 type
= SYMBOL_TYPE (sym
);
965 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
968 return java_boolean_type
;
970 return builtin_type_int
;
974 /* This page contains functions that return info about
975 (struct value) values used in GDB. */
977 /* Returns non-zero if the value VAL represents a true value. */
979 value_true (struct value
*val
)
981 /* It is possible that we should have some sort of error if a non-boolean
982 value is used in this context. Possibly dependent on some kind of
983 "boolean-checking" option like range checking. But it should probably
984 not depend on the language except insofar as is necessary to identify
985 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
986 should be an error, probably). */
987 return !value_logical_not (val
);
990 /* Returns non-zero if the operator OP is defined on
991 the values ARG1 and ARG2. */
993 #if 0 /* Currently unused */
996 binop_type_check (struct value
*arg1
, struct value
*arg2
, int op
)
998 struct type
*t1
, *t2
;
1000 /* If we're not checking types, always return success. */
1004 t1
= VALUE_TYPE (arg1
);
1006 t2
= VALUE_TYPE (arg2
);
1014 if ((numeric_type (t1
) && pointer_type (t2
)) ||
1015 (pointer_type (t1
) && numeric_type (t2
)))
1017 warning ("combining pointer and integer.\n");
1023 if (!numeric_type (t1
) || !numeric_type (t2
))
1024 type_op_error ("Arguments to %s must be numbers.", op
);
1025 else if (!same_type (t1
, t2
))
1026 type_op_error ("Arguments to %s must be of the same type.", op
);
1029 case BINOP_LOGICAL_AND
:
1030 case BINOP_LOGICAL_OR
:
1031 if (!boolean_type (t1
) || !boolean_type (t2
))
1032 type_op_error ("Arguments to %s must be of boolean type.", op
);
1036 if ((pointer_type (t1
) && !(pointer_type (t2
) || integral_type (t2
))) ||
1037 (pointer_type (t2
) && !(pointer_type (t1
) || integral_type (t1
))))
1038 type_op_error ("A pointer can only be compared to an integer or pointer.", op
);
1039 else if ((pointer_type (t1
) && integral_type (t2
)) ||
1040 (integral_type (t1
) && pointer_type (t2
)))
1042 warning ("combining integer and pointer.\n");
1045 else if (!simple_type (t1
) || !simple_type (t2
))
1046 type_op_error ("Arguments to %s must be of simple type.", op
);
1047 else if (!same_type (t1
, t2
))
1048 type_op_error ("Arguments to %s must be of the same type.", op
);
1053 if (!integral_type (t1
) || !integral_type (t2
))
1054 type_op_error ("Arguments to %s must be of integral type.", op
);
1061 if (!ordered_type (t1
) || !ordered_type (t2
))
1062 type_op_error ("Arguments to %s must be of ordered type.", op
);
1063 else if (!same_type (t1
, t2
))
1064 type_op_error ("Arguments to %s must be of the same type.", op
);
1068 if (pointer_type (t1
) && !integral_type (t2
))
1069 type_op_error ("A pointer can only be assigned an integer.", op
);
1070 else if (pointer_type (t1
) && integral_type (t2
))
1072 warning ("combining integer and pointer.");
1075 else if (!simple_type (t1
) || !simple_type (t2
))
1076 type_op_error ("Arguments to %s must be of simple type.", op
);
1077 else if (!same_type (t1
, t2
))
1078 type_op_error ("Arguments to %s must be of the same type.", op
);
1082 /* FIXME: Needs to handle bitstrings as well. */
1083 if (!(string_type (t1
) || character_type (t1
) || integral_type (t1
))
1084 || !(string_type (t2
) || character_type (t2
) || integral_type (t2
)))
1085 type_op_error ("Arguments to %s must be strings or characters.", op
);
1088 /* Unary checks -- arg2 is null */
1090 case UNOP_LOGICAL_NOT
:
1091 if (!boolean_type (t1
))
1092 type_op_error ("Argument to %s must be of boolean type.", op
);
1097 if (!numeric_type (t1
))
1098 type_op_error ("Argument to %s must be of numeric type.", op
);
1102 if (integral_type (t1
))
1104 warning ("combining pointer and integer.\n");
1107 else if (!pointer_type (t1
))
1108 type_op_error ("Argument to %s must be a pointer.", op
);
1111 case UNOP_PREINCREMENT
:
1112 case UNOP_POSTINCREMENT
:
1113 case UNOP_PREDECREMENT
:
1114 case UNOP_POSTDECREMENT
:
1115 if (!ordered_type (t1
))
1116 type_op_error ("Argument to %s must be of an ordered type.", op
);
1120 /* Ok. The following operators have different meanings in
1121 different languages. */
1122 switch (current_language
->la_language
)
1126 case language_cplus
:
1130 if (!numeric_type (t1
) || !numeric_type (t2
))
1131 type_op_error ("Arguments to %s must be numbers.", op
);
1142 if (!float_type (t1
) || !float_type (t2
))
1143 type_op_error ("Arguments to %s must be floating point numbers.", op
);
1146 if (!integral_type (t1
) || !integral_type (t2
))
1147 type_op_error ("Arguments to %s must be of integral type.", op
);
1153 case language_pascal
:
1157 if (!float_type(t1
) && !float_type(t2
))
1158 type_op_error ("Arguments to %s must be floating point numbers.",op
);
1161 if (!integral_type(t1
) || !integral_type(t2
))
1162 type_op_error ("Arguments to %s must be of integral type.",op
);
1167 #ifdef _LANG_chill /* OBSOLETE */
1168 /* OBSOLETE case language_chill: */
1169 /* OBSOLETE error ("Missing Chill support in function binop_type_check."); *//*FIXME */
1179 /* This page contains functions for the printing out of
1180 error messages that occur during type- and range-
1183 /* Prints the format string FMT with the operator as a string
1184 corresponding to the opcode OP. If FATAL is non-zero, then
1185 this is an error and error () is called. Otherwise, it is
1186 a warning and printf() is called. */
1188 op_error (char *fmt
, enum exp_opcode op
, int fatal
)
1191 error (fmt
, op_string (op
));
1194 warning (fmt
, op_string (op
));
1198 /* These are called when a language fails a type- or range-check. The
1199 first argument should be a printf()-style format string, and the
1200 rest of the arguments should be its arguments. If
1201 [type|range]_check is [type|range]_check_on, an error is printed;
1202 if [type|range]_check_warn, a warning; otherwise just the
1206 type_error (const char *string
,...)
1209 va_start (args
, string
);
1213 case type_check_warn
:
1214 vwarning (string
, args
);
1217 verror (string
, args
);
1219 case type_check_off
:
1220 /* FIXME: cagney/2002-01-30: Should this function print anything
1221 when type error is off? */
1222 vfprintf_filtered (gdb_stderr
, string
, args
);
1223 fprintf_filtered (gdb_stderr
, "\n");
1226 internal_error (__FILE__
, __LINE__
, "bad switch");
1232 range_error (const char *string
,...)
1235 va_start (args
, string
);
1237 switch (range_check
)
1239 case range_check_warn
:
1240 vwarning (string
, args
);
1242 case range_check_on
:
1243 verror (string
, args
);
1245 case range_check_off
:
1246 /* FIXME: cagney/2002-01-30: Should this function print anything
1247 when range error is off? */
1248 vfprintf_filtered (gdb_stderr
, string
, args
);
1249 fprintf_filtered (gdb_stderr
, "\n");
1252 internal_error (__FILE__
, __LINE__
, "bad switch");
1258 /* This page contains miscellaneous functions */
1260 /* Return the language enum for a given language string. */
1263 language_enum (char *str
)
1267 for (i
= 0; i
< languages_size
; i
++)
1268 if (STREQ (languages
[i
]->la_name
, str
))
1269 return languages
[i
]->la_language
;
1271 return language_unknown
;
1274 /* Return the language struct for a given language enum. */
1276 const struct language_defn
*
1277 language_def (enum language lang
)
1281 for (i
= 0; i
< languages_size
; i
++)
1283 if (languages
[i
]->la_language
== lang
)
1285 return languages
[i
];
1291 /* Return the language as a string */
1293 language_str (enum language lang
)
1297 for (i
= 0; i
< languages_size
; i
++)
1299 if (languages
[i
]->la_language
== lang
)
1301 return languages
[i
]->la_name
;
1308 set_check (char *ignore
, int from_tty
)
1311 "\"set check\" must be followed by the name of a check subcommand.\n");
1312 help_list (setchecklist
, "set check ", -1, gdb_stdout
);
1316 show_check (char *ignore
, int from_tty
)
1318 cmd_show_list (showchecklist
, from_tty
, "");
1321 /* Add a language to the set of known languages. */
1324 add_language (const struct language_defn
*lang
)
1326 if (lang
->la_magic
!= LANG_MAGIC
)
1328 fprintf_unfiltered (gdb_stderr
, "Magic number of %s language struct wrong\n",
1330 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1335 languages_allocsize
= DEFAULT_ALLOCSIZE
;
1336 languages
= (const struct language_defn
**) xmalloc
1337 (languages_allocsize
* sizeof (*languages
));
1339 if (languages_size
>= languages_allocsize
)
1341 languages_allocsize
*= 2;
1342 languages
= (const struct language_defn
**) xrealloc ((char *) languages
,
1343 languages_allocsize
* sizeof (*languages
));
1345 languages
[languages_size
++] = lang
;
1348 /* Define the language that is no language. */
1351 unk_lang_parser (void)
1357 unk_lang_error (char *msg
)
1359 error ("Attempted to parse an expression with unknown language");
1363 unk_lang_emit_char (register int c
, struct ui_file
*stream
, int quoter
)
1365 error ("internal error - unimplemented function unk_lang_emit_char called.");
1369 unk_lang_printchar (register int c
, struct ui_file
*stream
)
1371 error ("internal error - unimplemented function unk_lang_printchar called.");
1375 unk_lang_printstr (struct ui_file
*stream
, char *string
, unsigned int length
,
1376 int width
, int force_ellipses
)
1378 error ("internal error - unimplemented function unk_lang_printstr called.");
1381 static struct type
*
1382 unk_lang_create_fundamental_type (struct objfile
*objfile
, int typeid)
1384 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1388 unk_lang_print_type (struct type
*type
, char *varstring
, struct ui_file
*stream
,
1389 int show
, int level
)
1391 error ("internal error - unimplemented function unk_lang_print_type called.");
1395 unk_lang_val_print (struct type
*type
, char *valaddr
, int embedded_offset
,
1396 CORE_ADDR address
, struct ui_file
*stream
, int format
,
1397 int deref_ref
, int recurse
, enum val_prettyprint pretty
)
1399 error ("internal error - unimplemented function unk_lang_val_print called.");
1403 unk_lang_value_print (struct value
*val
, struct ui_file
*stream
, int format
,
1404 enum val_prettyprint pretty
)
1406 error ("internal error - unimplemented function unk_lang_value_print called.");
1409 static struct type
**const (unknown_builtin_types
[]) =
1413 static const struct op_print unk_op_print_tab
[] =
1415 {NULL
, OP_NULL
, PREC_NULL
, 0}
1418 const struct language_defn unknown_language_defn
=
1422 &unknown_builtin_types
[0],
1428 evaluate_subexp_standard
,
1429 unk_lang_printchar
, /* Print character constant */
1432 unk_lang_create_fundamental_type
,
1433 unk_lang_print_type
, /* Print a type using appropriate syntax */
1434 unk_lang_val_print
, /* Print a value using appropriate syntax */
1435 unk_lang_value_print
, /* Print a top-level value */
1436 {"", "", "", ""}, /* Binary format info */
1437 {"0%lo", "0", "o", ""}, /* Octal format info */
1438 {"%ld", "", "d", ""}, /* Decimal format info */
1439 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1440 unk_op_print_tab
, /* expression operators for printing */
1441 1, /* c-style arrays */
1442 0, /* String lower bound */
1443 &builtin_type_char
, /* Type of string elements */
1447 /* These two structs define fake entries for the "local" and "auto" options. */
1448 const struct language_defn auto_language_defn
=
1452 &unknown_builtin_types
[0],
1458 evaluate_subexp_standard
,
1459 unk_lang_printchar
, /* Print character constant */
1462 unk_lang_create_fundamental_type
,
1463 unk_lang_print_type
, /* Print a type using appropriate syntax */
1464 unk_lang_val_print
, /* Print a value using appropriate syntax */
1465 unk_lang_value_print
, /* Print a top-level value */
1466 {"", "", "", ""}, /* Binary format info */
1467 {"0%lo", "0", "o", ""}, /* Octal format info */
1468 {"%ld", "", "d", ""}, /* Decimal format info */
1469 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1470 unk_op_print_tab
, /* expression operators for printing */
1471 1, /* c-style arrays */
1472 0, /* String lower bound */
1473 &builtin_type_char
, /* Type of string elements */
1477 const struct language_defn local_language_defn
=
1481 &unknown_builtin_types
[0],
1487 evaluate_subexp_standard
,
1488 unk_lang_printchar
, /* Print character constant */
1491 unk_lang_create_fundamental_type
,
1492 unk_lang_print_type
, /* Print a type using appropriate syntax */
1493 unk_lang_val_print
, /* Print a value using appropriate syntax */
1494 unk_lang_value_print
, /* Print a top-level value */
1495 {"", "", "", ""}, /* Binary format info */
1496 {"0%lo", "0", "o", ""}, /* Octal format info */
1497 {"%ld", "", "d", ""}, /* Decimal format info */
1498 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1499 unk_op_print_tab
, /* expression operators for printing */
1500 1, /* c-style arrays */
1501 0, /* String lower bound */
1502 &builtin_type_char
, /* Type of string elements */
1506 /* Initialize the language routines */
1509 _initialize_language (void)
1511 struct cmd_list_element
*set
, *show
;
1513 /* GDB commands for language specific stuff */
1515 set
= add_set_cmd ("language", class_support
, var_string_noescape
,
1517 "Set the current source language.",
1519 show
= add_show_from_set (set
, &showlist
);
1520 set_cmd_cfunc (set
, set_language_command
);
1521 set_cmd_cfunc (show
, show_language_command
);
1523 add_prefix_cmd ("check", no_class
, set_check
,
1524 "Set the status of the type/range checker.",
1525 &setchecklist
, "set check ", 0, &setlist
);
1526 add_alias_cmd ("c", "check", no_class
, 1, &setlist
);
1527 add_alias_cmd ("ch", "check", no_class
, 1, &setlist
);
1529 add_prefix_cmd ("check", no_class
, show_check
,
1530 "Show the status of the type/range checker.",
1531 &showchecklist
, "show check ", 0, &showlist
);
1532 add_alias_cmd ("c", "check", no_class
, 1, &showlist
);
1533 add_alias_cmd ("ch", "check", no_class
, 1, &showlist
);
1535 set
= add_set_cmd ("type", class_support
, var_string_noescape
,
1537 "Set type checking. (on/warn/off/auto)",
1539 show
= add_show_from_set (set
, &showchecklist
);
1540 set_cmd_cfunc (set
, set_type_command
);
1541 set_cmd_cfunc (show
, show_type_command
);
1543 set
= add_set_cmd ("range", class_support
, var_string_noescape
,
1545 "Set range checking. (on/warn/off/auto)",
1547 show
= add_show_from_set (set
, &showchecklist
);
1548 set_cmd_cfunc (set
, set_range_command
);
1549 set_cmd_cfunc (show
, show_range_command
);
1551 set
= add_set_cmd ("case-sensitive", class_support
, var_string_noescape
,
1552 (char *) &case_sensitive
,
1553 "Set case sensitivity in name search. (on/off/auto)\n\
1554 For Fortran the default is off; for other languages the default is on.",
1556 show
= add_show_from_set (set
, &showlist
);
1557 set_cmd_cfunc (set
, set_case_command
);
1558 set_cmd_cfunc (show
, show_case_command
);
1560 add_language (&unknown_language_defn
);
1561 add_language (&local_language_defn
);
1562 add_language (&auto_language_defn
);
1564 language
= savestring ("auto", strlen ("auto"));
1565 type
= savestring ("auto", strlen ("auto"));
1566 range
= savestring ("auto", strlen ("auto"));
1567 case_sensitive
= savestring ("auto",strlen ("auto"));
1569 /* Have the above take effect */
1570 set_language (language_auto
);