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
)
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 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
573 return (struct type
*) 0; /* For lint */
579 /* This page contains functions that return format strings for
580 printf for printing out numbers in different formats */
582 /* Returns the appropriate printf format for hexadecimal
585 local_hex_format_custom (char *pre
)
587 static char form
[50];
589 strcpy (form
, local_hex_format_prefix ());
592 strcat (form
, local_hex_format_specifier ());
593 strcat (form
, local_hex_format_suffix ());
597 /* Converts a LONGEST to custom hexadecimal and stores it in a static
598 string. Returns a pointer to this string. */
600 local_hex_string (LONGEST num
)
602 return local_hex_string_custom (num
, "l");
605 /* Converts a LONGEST number to custom hexadecimal and stores it in a static
606 string. Returns a pointer to this string. Note that the width parameter
607 should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
610 local_hex_string_custom (LONGEST num
, char *width
)
612 #define RESULT_BUF_LEN 50
613 static char res2
[RESULT_BUF_LEN
];
614 char format
[RESULT_BUF_LEN
];
618 char *pad_char
; /* string with one character */
621 char temp_nbr_buf
[RESULT_BUF_LEN
];
623 /* Use phex_nz to print the number into a string, then
624 build the result string from local_hex_format_prefix, padding and
625 the hex representation as indicated by "width". */
626 strcpy (temp_nbr_buf
, phex_nz (num
, sizeof (num
)));
631 if (*parse_ptr
== '-')
636 if (*parse_ptr
== '0')
640 pad_char
= "0"; /* If padding is on the right, it is blank */
642 field_width
= atoi (parse_ptr
);
643 num_len
= strlen (temp_nbr_buf
);
644 num_pad_chars
= field_width
- strlen (temp_nbr_buf
); /* possibly negative */
646 if (strlen (local_hex_format_prefix ()) + num_len
+ num_pad_chars
647 >= RESULT_BUF_LEN
) /* paranoia */
648 internal_error (__FILE__
, __LINE__
,
649 "local_hex_string_custom: insufficient space to store result");
651 strcpy (res2
, local_hex_format_prefix ());
654 while (num_pad_chars
> 0)
656 strcat (res2
, pad_char
);
660 strcat (res2
, temp_nbr_buf
);
663 while (num_pad_chars
> 0)
665 strcat (res2
, pad_char
);
671 } /* local_hex_string_custom */
673 /* Returns the appropriate printf format for octal
676 local_octal_format_custom (char *pre
)
678 static char form
[50];
680 strcpy (form
, local_octal_format_prefix ());
683 strcat (form
, local_octal_format_specifier ());
684 strcat (form
, local_octal_format_suffix ());
688 /* Returns the appropriate printf format for decimal numbers. */
690 local_decimal_format_custom (char *pre
)
692 static char form
[50];
694 strcpy (form
, local_decimal_format_prefix ());
697 strcat (form
, local_decimal_format_specifier ());
698 strcat (form
, local_decimal_format_suffix ());
703 /* This page contains functions that are used in type/range checking.
704 They all return zero if the type/range check fails.
706 It is hoped that these will make extending GDB to parse different
707 languages a little easier. These are primarily used in eval.c when
708 evaluating expressions and making sure that their types are correct.
709 Instead of having a mess of conjucted/disjuncted expressions in an "if",
710 the ideas of type can be wrapped up in the following functions.
712 Note that some of them are not currently dependent upon which language
713 is currently being parsed. For example, floats are the same in
714 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
715 TYPE_CODE_FLT), while booleans are different. */
717 /* Returns non-zero if its argument is a simple type. This is the same for
718 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
719 and thus will never cause the failure of the test. */
721 simple_type (struct type
*type
)
723 CHECK_TYPEDEF (type
);
724 switch (TYPE_CODE (type
))
730 case TYPE_CODE_RANGE
:
739 /* Returns non-zero if its argument is of an ordered type.
740 An ordered type is one in which the elements can be tested for the
741 properties of "greater than", "less than", etc, or for which the
742 operations "increment" or "decrement" make sense. */
744 ordered_type (struct type
*type
)
746 CHECK_TYPEDEF (type
);
747 switch (TYPE_CODE (type
))
753 case TYPE_CODE_RANGE
:
761 /* Returns non-zero if the two types are the same */
763 same_type (struct type
*arg1
, struct type
*arg2
)
765 CHECK_TYPEDEF (type
);
766 if (structured_type (arg1
) ? !structured_type (arg2
) : structured_type (arg2
))
767 /* One is structured and one isn't */
769 else if (structured_type (arg1
) && structured_type (arg2
))
771 else if (numeric_type (arg1
) && numeric_type (arg2
))
772 return (TYPE_CODE (arg2
) == TYPE_CODE (arg1
)) &&
773 (TYPE_UNSIGNED (arg1
) == TYPE_UNSIGNED (arg2
))
779 /* Returns non-zero if the type is integral */
781 integral_type (struct type
*type
)
783 CHECK_TYPEDEF (type
);
784 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;
795 error ("Language not supported.");
799 /* Returns non-zero if the value is numeric */
801 numeric_type (struct type
*type
)
803 CHECK_TYPEDEF (type
);
804 switch (TYPE_CODE (type
))
815 /* Returns non-zero if the value is a character type */
817 character_type (struct type
*type
)
819 CHECK_TYPEDEF (type
);
820 switch (current_language
->la_language
)
823 case language_pascal
:
824 return TYPE_CODE (type
) != TYPE_CODE_CHAR
? 0 : 1;
829 return (TYPE_CODE (type
) == TYPE_CODE_INT
) &&
830 TYPE_LENGTH (type
) == sizeof (char)
837 /* Returns non-zero if the value is a string type */
839 string_type (struct type
*type
)
841 CHECK_TYPEDEF (type
);
842 switch (current_language
->la_language
)
845 case language_pascal
:
846 return TYPE_CODE (type
) != TYPE_CODE_STRING
? 0 : 1;
851 /* C does not have distinct string type. */
858 /* Returns non-zero if the value is a boolean type */
860 boolean_type (struct type
*type
)
862 CHECK_TYPEDEF (type
);
863 if (TYPE_CODE (type
) == TYPE_CODE_BOOL
)
865 switch (current_language
->la_language
)
870 /* Might be more cleanly handled by having a
871 TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
872 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
873 if (TYPE_CODE (type
) == TYPE_CODE_INT
)
881 /* Returns non-zero if the value is a floating-point type */
883 float_type (struct type
*type
)
885 CHECK_TYPEDEF (type
);
886 return TYPE_CODE (type
) == TYPE_CODE_FLT
;
889 /* Returns non-zero if the value is a pointer type */
891 pointer_type (struct type
*type
)
893 return TYPE_CODE (type
) == TYPE_CODE_PTR
||
894 TYPE_CODE (type
) == TYPE_CODE_REF
;
897 /* Returns non-zero if the value is a structured type */
899 structured_type (struct type
*type
)
901 CHECK_TYPEDEF (type
);
902 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
);
926 lang_bool_type (void)
930 switch (current_language
->la_language
)
932 case language_fortran
:
933 sym
= lookup_symbol ("logical", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
936 type
= SYMBOL_TYPE (sym
);
937 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
940 return builtin_type_f_logical_s2
;
942 case language_pascal
:
943 if (current_language
->la_language
==language_cplus
)
944 {sym
= lookup_symbol ("bool", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
946 {sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
949 type
= SYMBOL_TYPE (sym
);
950 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
953 return builtin_type_bool
;
955 sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
958 type
= SYMBOL_TYPE (sym
);
959 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
962 return java_boolean_type
;
964 return builtin_type_int
;
968 /* This page contains functions that return info about
969 (struct value) values used in GDB. */
971 /* Returns non-zero if the value VAL represents a true value. */
973 value_true (struct value
*val
)
975 /* It is possible that we should have some sort of error if a non-boolean
976 value is used in this context. Possibly dependent on some kind of
977 "boolean-checking" option like range checking. But it should probably
978 not depend on the language except insofar as is necessary to identify
979 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
980 should be an error, probably). */
981 return !value_logical_not (val
);
984 /* Returns non-zero if the operator OP is defined on
985 the values ARG1 and ARG2. */
987 #if 0 /* Currently unused */
990 binop_type_check (struct value
*arg1
, struct value
*arg2
, int op
)
992 struct type
*t1
, *t2
;
994 /* If we're not checking types, always return success. */
998 t1
= VALUE_TYPE (arg1
);
1000 t2
= VALUE_TYPE (arg2
);
1008 if ((numeric_type (t1
) && pointer_type (t2
)) ||
1009 (pointer_type (t1
) && numeric_type (t2
)))
1011 warning ("combining pointer and integer.\n");
1017 if (!numeric_type (t1
) || !numeric_type (t2
))
1018 type_op_error ("Arguments to %s must be numbers.", op
);
1019 else if (!same_type (t1
, t2
))
1020 type_op_error ("Arguments to %s must be of the same type.", op
);
1023 case BINOP_LOGICAL_AND
:
1024 case BINOP_LOGICAL_OR
:
1025 if (!boolean_type (t1
) || !boolean_type (t2
))
1026 type_op_error ("Arguments to %s must be of boolean type.", op
);
1030 if ((pointer_type (t1
) && !(pointer_type (t2
) || integral_type (t2
))) ||
1031 (pointer_type (t2
) && !(pointer_type (t1
) || integral_type (t1
))))
1032 type_op_error ("A pointer can only be compared to an integer or pointer.", op
);
1033 else if ((pointer_type (t1
) && integral_type (t2
)) ||
1034 (integral_type (t1
) && pointer_type (t2
)))
1036 warning ("combining integer and pointer.\n");
1039 else if (!simple_type (t1
) || !simple_type (t2
))
1040 type_op_error ("Arguments to %s must be of simple type.", op
);
1041 else if (!same_type (t1
, t2
))
1042 type_op_error ("Arguments to %s must be of the same type.", op
);
1047 if (!integral_type (t1
) || !integral_type (t2
))
1048 type_op_error ("Arguments to %s must be of integral type.", op
);
1055 if (!ordered_type (t1
) || !ordered_type (t2
))
1056 type_op_error ("Arguments to %s must be of ordered type.", op
);
1057 else if (!same_type (t1
, t2
))
1058 type_op_error ("Arguments to %s must be of the same type.", op
);
1062 if (pointer_type (t1
) && !integral_type (t2
))
1063 type_op_error ("A pointer can only be assigned an integer.", op
);
1064 else if (pointer_type (t1
) && integral_type (t2
))
1066 warning ("combining integer and pointer.");
1069 else if (!simple_type (t1
) || !simple_type (t2
))
1070 type_op_error ("Arguments to %s must be of simple type.", op
);
1071 else if (!same_type (t1
, t2
))
1072 type_op_error ("Arguments to %s must be of the same type.", op
);
1076 /* FIXME: Needs to handle bitstrings as well. */
1077 if (!(string_type (t1
) || character_type (t1
) || integral_type (t1
))
1078 || !(string_type (t2
) || character_type (t2
) || integral_type (t2
)))
1079 type_op_error ("Arguments to %s must be strings or characters.", op
);
1082 /* Unary checks -- arg2 is null */
1084 case UNOP_LOGICAL_NOT
:
1085 if (!boolean_type (t1
))
1086 type_op_error ("Argument to %s must be of boolean type.", op
);
1091 if (!numeric_type (t1
))
1092 type_op_error ("Argument to %s must be of numeric type.", op
);
1096 if (integral_type (t1
))
1098 warning ("combining pointer and integer.\n");
1101 else if (!pointer_type (t1
))
1102 type_op_error ("Argument to %s must be a pointer.", op
);
1105 case UNOP_PREINCREMENT
:
1106 case UNOP_POSTINCREMENT
:
1107 case UNOP_PREDECREMENT
:
1108 case UNOP_POSTDECREMENT
:
1109 if (!ordered_type (t1
))
1110 type_op_error ("Argument to %s must be of an ordered type.", op
);
1114 /* Ok. The following operators have different meanings in
1115 different languages. */
1116 switch (current_language
->la_language
)
1120 case language_cplus
:
1125 if (!numeric_type (t1
) || !numeric_type (t2
))
1126 type_op_error ("Arguments to %s must be numbers.", op
);
1137 if (!float_type (t1
) || !float_type (t2
))
1138 type_op_error ("Arguments to %s must be floating point numbers.", op
);
1141 if (!integral_type (t1
) || !integral_type (t2
))
1142 type_op_error ("Arguments to %s must be of integral type.", op
);
1148 case language_pascal
:
1152 if (!float_type(t1
) && !float_type(t2
))
1153 type_op_error ("Arguments to %s must be floating point numbers.",op
);
1156 if (!integral_type(t1
) || !integral_type(t2
))
1157 type_op_error ("Arguments to %s must be of integral type.",op
);
1169 /* This page contains functions for the printing out of
1170 error messages that occur during type- and range-
1173 /* Prints the format string FMT with the operator as a string
1174 corresponding to the opcode OP. If FATAL is non-zero, then
1175 this is an error and error () is called. Otherwise, it is
1176 a warning and printf() is called. */
1178 op_error (char *fmt
, enum exp_opcode op
, int fatal
)
1181 error (fmt
, op_string (op
));
1184 warning (fmt
, op_string (op
));
1188 /* These are called when a language fails a type- or range-check. The
1189 first argument should be a printf()-style format string, and the
1190 rest of the arguments should be its arguments. If
1191 [type|range]_check is [type|range]_check_on, an error is printed;
1192 if [type|range]_check_warn, a warning; otherwise just the
1196 type_error (const char *string
,...)
1199 va_start (args
, string
);
1203 case type_check_warn
:
1204 vwarning (string
, args
);
1207 verror (string
, args
);
1209 case type_check_off
:
1210 /* FIXME: cagney/2002-01-30: Should this function print anything
1211 when type error is off? */
1212 vfprintf_filtered (gdb_stderr
, string
, args
);
1213 fprintf_filtered (gdb_stderr
, "\n");
1216 internal_error (__FILE__
, __LINE__
, "bad switch");
1222 range_error (const char *string
,...)
1225 va_start (args
, string
);
1227 switch (range_check
)
1229 case range_check_warn
:
1230 vwarning (string
, args
);
1232 case range_check_on
:
1233 verror (string
, args
);
1235 case range_check_off
:
1236 /* FIXME: cagney/2002-01-30: Should this function print anything
1237 when range error is off? */
1238 vfprintf_filtered (gdb_stderr
, string
, args
);
1239 fprintf_filtered (gdb_stderr
, "\n");
1242 internal_error (__FILE__
, __LINE__
, "bad switch");
1248 /* This page contains miscellaneous functions */
1250 /* Return the language enum for a given language string. */
1253 language_enum (char *str
)
1257 for (i
= 0; i
< languages_size
; i
++)
1258 if (STREQ (languages
[i
]->la_name
, str
))
1259 return languages
[i
]->la_language
;
1261 return language_unknown
;
1264 /* Return the language struct for a given language enum. */
1266 const struct language_defn
*
1267 language_def (enum language lang
)
1271 for (i
= 0; i
< languages_size
; i
++)
1273 if (languages
[i
]->la_language
== lang
)
1275 return languages
[i
];
1281 /* Return the language as a string */
1283 language_str (enum language lang
)
1287 for (i
= 0; i
< languages_size
; i
++)
1289 if (languages
[i
]->la_language
== lang
)
1291 return languages
[i
]->la_name
;
1298 set_check (char *ignore
, int from_tty
)
1301 "\"set check\" must be followed by the name of a check subcommand.\n");
1302 help_list (setchecklist
, "set check ", -1, gdb_stdout
);
1306 show_check (char *ignore
, int from_tty
)
1308 cmd_show_list (showchecklist
, from_tty
, "");
1311 /* Add a language to the set of known languages. */
1314 add_language (const struct language_defn
*lang
)
1316 if (lang
->la_magic
!= LANG_MAGIC
)
1318 fprintf_unfiltered (gdb_stderr
, "Magic number of %s language struct wrong\n",
1320 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1325 languages_allocsize
= DEFAULT_ALLOCSIZE
;
1326 languages
= (const struct language_defn
**) xmalloc
1327 (languages_allocsize
* sizeof (*languages
));
1329 if (languages_size
>= languages_allocsize
)
1331 languages_allocsize
*= 2;
1332 languages
= (const struct language_defn
**) xrealloc ((char *) languages
,
1333 languages_allocsize
* sizeof (*languages
));
1335 languages
[languages_size
++] = lang
;
1338 /* Define the language that is no language. */
1341 unk_lang_parser (void)
1347 unk_lang_error (char *msg
)
1349 error ("Attempted to parse an expression with unknown language");
1353 unk_lang_emit_char (register int c
, struct ui_file
*stream
, int quoter
)
1355 error ("internal error - unimplemented function unk_lang_emit_char called.");
1359 unk_lang_printchar (register int c
, struct ui_file
*stream
)
1361 error ("internal error - unimplemented function unk_lang_printchar called.");
1365 unk_lang_printstr (struct ui_file
*stream
, char *string
, unsigned int length
,
1366 int width
, int force_ellipses
)
1368 error ("internal error - unimplemented function unk_lang_printstr called.");
1371 static struct type
*
1372 unk_lang_create_fundamental_type (struct objfile
*objfile
, int typeid)
1374 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1378 unk_lang_print_type (struct type
*type
, char *varstring
, struct ui_file
*stream
,
1379 int show
, int level
)
1381 error ("internal error - unimplemented function unk_lang_print_type called.");
1385 unk_lang_val_print (struct type
*type
, char *valaddr
, int embedded_offset
,
1386 CORE_ADDR address
, struct ui_file
*stream
, int format
,
1387 int deref_ref
, int recurse
, enum val_prettyprint pretty
)
1389 error ("internal error - unimplemented function unk_lang_val_print called.");
1393 unk_lang_value_print (struct value
*val
, struct ui_file
*stream
, int format
,
1394 enum val_prettyprint pretty
)
1396 error ("internal error - unimplemented function unk_lang_value_print called.");
1399 static struct type
**const (unknown_builtin_types
[]) =
1403 static const struct op_print unk_op_print_tab
[] =
1405 {NULL
, OP_NULL
, PREC_NULL
, 0}
1408 const struct language_defn unknown_language_defn
=
1412 &unknown_builtin_types
[0],
1418 evaluate_subexp_standard
,
1419 unk_lang_printchar
, /* Print character constant */
1422 unk_lang_create_fundamental_type
,
1423 unk_lang_print_type
, /* Print a type using appropriate syntax */
1424 unk_lang_val_print
, /* Print a value using appropriate syntax */
1425 unk_lang_value_print
, /* Print a top-level value */
1426 {"", "", "", ""}, /* Binary format info */
1427 {"0%lo", "0", "o", ""}, /* Octal format info */
1428 {"%ld", "", "d", ""}, /* Decimal format info */
1429 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1430 unk_op_print_tab
, /* expression operators for printing */
1431 1, /* c-style arrays */
1432 0, /* String lower bound */
1433 &builtin_type_char
, /* Type of string elements */
1437 /* These two structs define fake entries for the "local" and "auto" options. */
1438 const struct language_defn auto_language_defn
=
1442 &unknown_builtin_types
[0],
1448 evaluate_subexp_standard
,
1449 unk_lang_printchar
, /* Print character constant */
1452 unk_lang_create_fundamental_type
,
1453 unk_lang_print_type
, /* Print a type using appropriate syntax */
1454 unk_lang_val_print
, /* Print a value using appropriate syntax */
1455 unk_lang_value_print
, /* Print a top-level value */
1456 {"", "", "", ""}, /* Binary format info */
1457 {"0%lo", "0", "o", ""}, /* Octal format info */
1458 {"%ld", "", "d", ""}, /* Decimal format info */
1459 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1460 unk_op_print_tab
, /* expression operators for printing */
1461 1, /* c-style arrays */
1462 0, /* String lower bound */
1463 &builtin_type_char
, /* Type of string elements */
1467 const struct language_defn local_language_defn
=
1471 &unknown_builtin_types
[0],
1477 evaluate_subexp_standard
,
1478 unk_lang_printchar
, /* Print character constant */
1481 unk_lang_create_fundamental_type
,
1482 unk_lang_print_type
, /* Print a type using appropriate syntax */
1483 unk_lang_val_print
, /* Print a value using appropriate syntax */
1484 unk_lang_value_print
, /* Print a top-level value */
1485 {"", "", "", ""}, /* Binary format info */
1486 {"0%lo", "0", "o", ""}, /* Octal format info */
1487 {"%ld", "", "d", ""}, /* Decimal format info */
1488 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1489 unk_op_print_tab
, /* expression operators for printing */
1490 1, /* c-style arrays */
1491 0, /* String lower bound */
1492 &builtin_type_char
, /* Type of string elements */
1496 /* Initialize the language routines */
1499 _initialize_language (void)
1501 struct cmd_list_element
*set
, *show
;
1503 /* GDB commands for language specific stuff */
1505 set
= add_set_cmd ("language", class_support
, var_string_noescape
,
1507 "Set the current source language.",
1509 show
= add_show_from_set (set
, &showlist
);
1510 set_cmd_cfunc (set
, set_language_command
);
1511 set_cmd_cfunc (show
, show_language_command
);
1513 add_prefix_cmd ("check", no_class
, set_check
,
1514 "Set the status of the type/range checker.",
1515 &setchecklist
, "set check ", 0, &setlist
);
1516 add_alias_cmd ("c", "check", no_class
, 1, &setlist
);
1517 add_alias_cmd ("ch", "check", no_class
, 1, &setlist
);
1519 add_prefix_cmd ("check", no_class
, show_check
,
1520 "Show the status of the type/range checker.",
1521 &showchecklist
, "show check ", 0, &showlist
);
1522 add_alias_cmd ("c", "check", no_class
, 1, &showlist
);
1523 add_alias_cmd ("ch", "check", no_class
, 1, &showlist
);
1525 set
= add_set_cmd ("type", class_support
, var_string_noescape
,
1527 "Set type checking. (on/warn/off/auto)",
1529 show
= add_show_from_set (set
, &showchecklist
);
1530 set_cmd_cfunc (set
, set_type_command
);
1531 set_cmd_cfunc (show
, show_type_command
);
1533 set
= add_set_cmd ("range", class_support
, var_string_noescape
,
1535 "Set range checking. (on/warn/off/auto)",
1537 show
= add_show_from_set (set
, &showchecklist
);
1538 set_cmd_cfunc (set
, set_range_command
);
1539 set_cmd_cfunc (show
, show_range_command
);
1541 set
= add_set_cmd ("case-sensitive", class_support
, var_string_noescape
,
1542 (char *) &case_sensitive
,
1543 "Set case sensitivity in name search. (on/off/auto)\n\
1544 For Fortran the default is off; for other languages the default is on.",
1546 show
= add_show_from_set (set
, &showlist
);
1547 set_cmd_cfunc (set
, set_case_command
);
1548 set_cmd_cfunc (show
, show_case_command
);
1550 add_language (&unknown_language_defn
);
1551 add_language (&local_language_defn
);
1552 add_language (&auto_language_defn
);
1554 language
= savestring ("auto", strlen ("auto"));
1555 type
= savestring ("auto", strlen ("auto"));
1556 range
= savestring ("auto", strlen ("auto"));
1557 case_sensitive
= savestring ("auto",strlen ("auto"));
1559 /* Have the above take effect */
1560 set_language (language_auto
);