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
);
571 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;
795 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
)
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
)
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 TYPE_CODE_INT_NOT_BOOL
872 for CHILL and such 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
)
906 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
907 (TYPE_CODE (type
) == TYPE_CODE_UNION
) ||
908 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
909 case language_pascal
:
910 return (TYPE_CODE(type
) == TYPE_CODE_STRUCT
) ||
911 (TYPE_CODE(type
) == TYPE_CODE_UNION
) ||
912 (TYPE_CODE(type
) == TYPE_CODE_SET
) ||
913 (TYPE_CODE(type
) == TYPE_CODE_ARRAY
);
915 return (TYPE_CODE (type
) == TYPE_CODE_STRUCT
) ||
916 (TYPE_CODE (type
) == TYPE_CODE_SET
) ||
917 (TYPE_CODE (type
) == TYPE_CODE_ARRAY
);
919 error ("Missing Chill support in function structured_type."); /*FIXME */
927 lang_bool_type (void)
931 switch (current_language
->la_language
)
934 return builtin_type_chill_bool
;
935 case language_fortran
:
936 sym
= lookup_symbol ("logical", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
939 type
= SYMBOL_TYPE (sym
);
940 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
943 return builtin_type_f_logical_s2
;
945 case language_pascal
:
946 if (current_language
->la_language
==language_cplus
)
947 {sym
= lookup_symbol ("bool", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
949 {sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);}
952 type
= SYMBOL_TYPE (sym
);
953 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
956 return builtin_type_bool
;
958 sym
= lookup_symbol ("boolean", NULL
, VAR_NAMESPACE
, NULL
, NULL
);
961 type
= SYMBOL_TYPE (sym
);
962 if (type
&& TYPE_CODE (type
) == TYPE_CODE_BOOL
)
965 return java_boolean_type
;
967 return builtin_type_int
;
971 /* This page contains functions that return info about
972 (struct value) values used in GDB. */
974 /* Returns non-zero if the value VAL represents a true value. */
976 value_true (struct value
*val
)
978 /* It is possible that we should have some sort of error if a non-boolean
979 value is used in this context. Possibly dependent on some kind of
980 "boolean-checking" option like range checking. But it should probably
981 not depend on the language except insofar as is necessary to identify
982 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
983 should be an error, probably). */
984 return !value_logical_not (val
);
987 /* Returns non-zero if the operator OP is defined on
988 the values ARG1 and ARG2. */
990 #if 0 /* Currently unused */
993 binop_type_check (struct value
*arg1
, struct value
*arg2
, int op
)
995 struct type
*t1
, *t2
;
997 /* If we're not checking types, always return success. */
1001 t1
= VALUE_TYPE (arg1
);
1003 t2
= VALUE_TYPE (arg2
);
1011 if ((numeric_type (t1
) && pointer_type (t2
)) ||
1012 (pointer_type (t1
) && numeric_type (t2
)))
1014 warning ("combining pointer and integer.\n");
1020 if (!numeric_type (t1
) || !numeric_type (t2
))
1021 type_op_error ("Arguments to %s must be numbers.", op
);
1022 else if (!same_type (t1
, t2
))
1023 type_op_error ("Arguments to %s must be of the same type.", op
);
1026 case BINOP_LOGICAL_AND
:
1027 case BINOP_LOGICAL_OR
:
1028 if (!boolean_type (t1
) || !boolean_type (t2
))
1029 type_op_error ("Arguments to %s must be of boolean type.", op
);
1033 if ((pointer_type (t1
) && !(pointer_type (t2
) || integral_type (t2
))) ||
1034 (pointer_type (t2
) && !(pointer_type (t1
) || integral_type (t1
))))
1035 type_op_error ("A pointer can only be compared to an integer or pointer.", op
);
1036 else if ((pointer_type (t1
) && integral_type (t2
)) ||
1037 (integral_type (t1
) && pointer_type (t2
)))
1039 warning ("combining integer and pointer.\n");
1042 else if (!simple_type (t1
) || !simple_type (t2
))
1043 type_op_error ("Arguments to %s must be of simple type.", op
);
1044 else if (!same_type (t1
, t2
))
1045 type_op_error ("Arguments to %s must be of the same type.", op
);
1050 if (!integral_type (t1
) || !integral_type (t2
))
1051 type_op_error ("Arguments to %s must be of integral type.", op
);
1058 if (!ordered_type (t1
) || !ordered_type (t2
))
1059 type_op_error ("Arguments to %s must be of ordered type.", op
);
1060 else if (!same_type (t1
, t2
))
1061 type_op_error ("Arguments to %s must be of the same type.", op
);
1065 if (pointer_type (t1
) && !integral_type (t2
))
1066 type_op_error ("A pointer can only be assigned an integer.", op
);
1067 else if (pointer_type (t1
) && integral_type (t2
))
1069 warning ("combining integer and pointer.");
1072 else if (!simple_type (t1
) || !simple_type (t2
))
1073 type_op_error ("Arguments to %s must be of simple type.", op
);
1074 else if (!same_type (t1
, t2
))
1075 type_op_error ("Arguments to %s must be of the same type.", op
);
1079 /* FIXME: Needs to handle bitstrings as well. */
1080 if (!(string_type (t1
) || character_type (t1
) || integral_type (t1
))
1081 || !(string_type (t2
) || character_type (t2
) || integral_type (t2
)))
1082 type_op_error ("Arguments to %s must be strings or characters.", op
);
1085 /* Unary checks -- arg2 is null */
1087 case UNOP_LOGICAL_NOT
:
1088 if (!boolean_type (t1
))
1089 type_op_error ("Argument to %s must be of boolean type.", op
);
1094 if (!numeric_type (t1
))
1095 type_op_error ("Argument to %s must be of numeric type.", op
);
1099 if (integral_type (t1
))
1101 warning ("combining pointer and integer.\n");
1104 else if (!pointer_type (t1
))
1105 type_op_error ("Argument to %s must be a pointer.", op
);
1108 case UNOP_PREINCREMENT
:
1109 case UNOP_POSTINCREMENT
:
1110 case UNOP_PREDECREMENT
:
1111 case UNOP_POSTDECREMENT
:
1112 if (!ordered_type (t1
))
1113 type_op_error ("Argument to %s must be of an ordered type.", op
);
1117 /* Ok. The following operators have different meanings in
1118 different languages. */
1119 switch (current_language
->la_language
)
1123 case language_cplus
:
1127 if (!numeric_type (t1
) || !numeric_type (t2
))
1128 type_op_error ("Arguments to %s must be numbers.", op
);
1139 if (!float_type (t1
) || !float_type (t2
))
1140 type_op_error ("Arguments to %s must be floating point numbers.", op
);
1143 if (!integral_type (t1
) || !integral_type (t2
))
1144 type_op_error ("Arguments to %s must be of integral type.", op
);
1150 case language_pascal
:
1154 if (!float_type(t1
) && !float_type(t2
))
1155 type_op_error ("Arguments to %s must be floating point numbers.",op
);
1158 if (!integral_type(t1
) || !integral_type(t2
))
1159 type_op_error ("Arguments to %s must be of integral type.",op
);
1165 case language_chill
:
1166 error ("Missing Chill support in function binop_type_check."); /*FIXME */
1176 /* This page contains functions for the printing out of
1177 error messages that occur during type- and range-
1180 /* Prints the format string FMT with the operator as a string
1181 corresponding to the opcode OP. If FATAL is non-zero, then
1182 this is an error and error () is called. Otherwise, it is
1183 a warning and printf() is called. */
1185 op_error (char *fmt
, enum exp_opcode op
, int fatal
)
1188 error (fmt
, op_string (op
));
1191 warning (fmt
, op_string (op
));
1195 /* These are called when a language fails a type- or range-check. The
1196 first argument should be a printf()-style format string, and the
1197 rest of the arguments should be its arguments. If
1198 [type|range]_check is [type|range]_check_on, an error is printed;
1199 if [type|range]_check_warn, a warning; otherwise just the
1203 type_error (const char *string
,...)
1206 va_start (args
, string
);
1210 case type_check_warn
:
1211 vwarning (string
, args
);
1214 verror (string
, args
);
1216 case type_check_off
:
1217 /* FIXME: cagney/2002-01-30: Should this function print anything
1218 when type error is off? */
1219 vfprintf_filtered (gdb_stderr
, string
, args
);
1220 fprintf_filtered (gdb_stderr
, "\n");
1223 internal_error (__FILE__
, __LINE__
, "bad switch");
1229 range_error (const char *string
,...)
1232 va_start (args
, string
);
1234 switch (range_check
)
1236 case range_check_warn
:
1237 vwarning (string
, args
);
1239 case range_check_on
:
1240 verror (string
, args
);
1242 case range_check_off
:
1243 /* FIXME: cagney/2002-01-30: Should this function print anything
1244 when range error is off? */
1245 vfprintf_filtered (gdb_stderr
, string
, args
);
1246 fprintf_filtered (gdb_stderr
, "\n");
1249 internal_error (__FILE__
, __LINE__
, "bad switch");
1255 /* This page contains miscellaneous functions */
1257 /* Return the language enum for a given language string. */
1260 language_enum (char *str
)
1264 for (i
= 0; i
< languages_size
; i
++)
1265 if (STREQ (languages
[i
]->la_name
, str
))
1266 return languages
[i
]->la_language
;
1268 return language_unknown
;
1271 /* Return the language struct for a given language enum. */
1273 const struct language_defn
*
1274 language_def (enum language lang
)
1278 for (i
= 0; i
< languages_size
; i
++)
1280 if (languages
[i
]->la_language
== lang
)
1282 return languages
[i
];
1288 /* Return the language as a string */
1290 language_str (enum language lang
)
1294 for (i
= 0; i
< languages_size
; i
++)
1296 if (languages
[i
]->la_language
== lang
)
1298 return languages
[i
]->la_name
;
1305 set_check (char *ignore
, int from_tty
)
1308 "\"set check\" must be followed by the name of a check subcommand.\n");
1309 help_list (setchecklist
, "set check ", -1, gdb_stdout
);
1313 show_check (char *ignore
, int from_tty
)
1315 cmd_show_list (showchecklist
, from_tty
, "");
1318 /* Add a language to the set of known languages. */
1321 add_language (const struct language_defn
*lang
)
1323 if (lang
->la_magic
!= LANG_MAGIC
)
1325 fprintf_unfiltered (gdb_stderr
, "Magic number of %s language struct wrong\n",
1327 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1332 languages_allocsize
= DEFAULT_ALLOCSIZE
;
1333 languages
= (const struct language_defn
**) xmalloc
1334 (languages_allocsize
* sizeof (*languages
));
1336 if (languages_size
>= languages_allocsize
)
1338 languages_allocsize
*= 2;
1339 languages
= (const struct language_defn
**) xrealloc ((char *) languages
,
1340 languages_allocsize
* sizeof (*languages
));
1342 languages
[languages_size
++] = lang
;
1345 /* Define the language that is no language. */
1348 unk_lang_parser (void)
1354 unk_lang_error (char *msg
)
1356 error ("Attempted to parse an expression with unknown language");
1360 unk_lang_emit_char (register int c
, struct ui_file
*stream
, int quoter
)
1362 error ("internal error - unimplemented function unk_lang_emit_char called.");
1366 unk_lang_printchar (register int c
, struct ui_file
*stream
)
1368 error ("internal error - unimplemented function unk_lang_printchar called.");
1372 unk_lang_printstr (struct ui_file
*stream
, char *string
, unsigned int length
,
1373 int width
, int force_ellipses
)
1375 error ("internal error - unimplemented function unk_lang_printstr called.");
1378 static struct type
*
1379 unk_lang_create_fundamental_type (struct objfile
*objfile
, int typeid)
1381 error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
1385 unk_lang_print_type (struct type
*type
, char *varstring
, struct ui_file
*stream
,
1386 int show
, int level
)
1388 error ("internal error - unimplemented function unk_lang_print_type called.");
1392 unk_lang_val_print (struct type
*type
, char *valaddr
, int embedded_offset
,
1393 CORE_ADDR address
, struct ui_file
*stream
, int format
,
1394 int deref_ref
, int recurse
, enum val_prettyprint pretty
)
1396 error ("internal error - unimplemented function unk_lang_val_print called.");
1400 unk_lang_value_print (struct value
*val
, struct ui_file
*stream
, int format
,
1401 enum val_prettyprint pretty
)
1403 error ("internal error - unimplemented function unk_lang_value_print called.");
1406 static struct type
**const (unknown_builtin_types
[]) =
1410 static const struct op_print unk_op_print_tab
[] =
1412 {NULL
, OP_NULL
, PREC_NULL
, 0}
1415 const struct language_defn unknown_language_defn
=
1419 &unknown_builtin_types
[0],
1425 evaluate_subexp_standard
,
1426 unk_lang_printchar
, /* Print character constant */
1429 unk_lang_create_fundamental_type
,
1430 unk_lang_print_type
, /* Print a type using appropriate syntax */
1431 unk_lang_val_print
, /* Print a value using appropriate syntax */
1432 unk_lang_value_print
, /* Print a top-level value */
1433 {"", "", "", ""}, /* Binary format info */
1434 {"0%lo", "0", "o", ""}, /* Octal format info */
1435 {"%ld", "", "d", ""}, /* Decimal format info */
1436 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1437 unk_op_print_tab
, /* expression operators for printing */
1438 1, /* c-style arrays */
1439 0, /* String lower bound */
1440 &builtin_type_char
, /* Type of string elements */
1444 /* These two structs define fake entries for the "local" and "auto" options. */
1445 const struct language_defn auto_language_defn
=
1449 &unknown_builtin_types
[0],
1455 evaluate_subexp_standard
,
1456 unk_lang_printchar
, /* Print character constant */
1459 unk_lang_create_fundamental_type
,
1460 unk_lang_print_type
, /* Print a type using appropriate syntax */
1461 unk_lang_val_print
, /* Print a value using appropriate syntax */
1462 unk_lang_value_print
, /* Print a top-level value */
1463 {"", "", "", ""}, /* Binary format info */
1464 {"0%lo", "0", "o", ""}, /* Octal format info */
1465 {"%ld", "", "d", ""}, /* Decimal format info */
1466 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1467 unk_op_print_tab
, /* expression operators for printing */
1468 1, /* c-style arrays */
1469 0, /* String lower bound */
1470 &builtin_type_char
, /* Type of string elements */
1474 const struct language_defn local_language_defn
=
1478 &unknown_builtin_types
[0],
1484 evaluate_subexp_standard
,
1485 unk_lang_printchar
, /* Print character constant */
1488 unk_lang_create_fundamental_type
,
1489 unk_lang_print_type
, /* Print a type using appropriate syntax */
1490 unk_lang_val_print
, /* Print a value using appropriate syntax */
1491 unk_lang_value_print
, /* Print a top-level value */
1492 {"", "", "", ""}, /* Binary format info */
1493 {"0%lo", "0", "o", ""}, /* Octal format info */
1494 {"%ld", "", "d", ""}, /* Decimal format info */
1495 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1496 unk_op_print_tab
, /* expression operators for printing */
1497 1, /* c-style arrays */
1498 0, /* String lower bound */
1499 &builtin_type_char
, /* Type of string elements */
1503 /* Initialize the language routines */
1506 _initialize_language (void)
1508 struct cmd_list_element
*set
, *show
;
1510 /* GDB commands for language specific stuff */
1512 set
= add_set_cmd ("language", class_support
, var_string_noescape
,
1514 "Set the current source language.",
1516 show
= add_show_from_set (set
, &showlist
);
1517 set_cmd_cfunc (set
, set_language_command
);
1518 set_cmd_cfunc (show
, show_language_command
);
1520 add_prefix_cmd ("check", no_class
, set_check
,
1521 "Set the status of the type/range checker.",
1522 &setchecklist
, "set check ", 0, &setlist
);
1523 add_alias_cmd ("c", "check", no_class
, 1, &setlist
);
1524 add_alias_cmd ("ch", "check", no_class
, 1, &setlist
);
1526 add_prefix_cmd ("check", no_class
, show_check
,
1527 "Show the status of the type/range checker.",
1528 &showchecklist
, "show check ", 0, &showlist
);
1529 add_alias_cmd ("c", "check", no_class
, 1, &showlist
);
1530 add_alias_cmd ("ch", "check", no_class
, 1, &showlist
);
1532 set
= add_set_cmd ("type", class_support
, var_string_noescape
,
1534 "Set type checking. (on/warn/off/auto)",
1536 show
= add_show_from_set (set
, &showchecklist
);
1537 set_cmd_cfunc (set
, set_type_command
);
1538 set_cmd_cfunc (show
, show_type_command
);
1540 set
= add_set_cmd ("range", class_support
, var_string_noescape
,
1542 "Set range checking. (on/warn/off/auto)",
1544 show
= add_show_from_set (set
, &showchecklist
);
1545 set_cmd_cfunc (set
, set_range_command
);
1546 set_cmd_cfunc (show
, show_range_command
);
1548 set
= add_set_cmd ("case-sensitive", class_support
, var_string_noescape
,
1549 (char *) &case_sensitive
,
1550 "Set case sensitivity in name search. (on/off/auto)\n\
1551 For Fortran the default is off; for other languages the default is on.",
1553 show
= add_show_from_set (set
, &showlist
);
1554 set_cmd_cfunc (set
, set_case_command
);
1555 set_cmd_cfunc (show
, show_case_command
);
1557 add_language (&unknown_language_defn
);
1558 add_language (&local_language_defn
);
1559 add_language (&auto_language_defn
);
1561 language
= savestring ("auto", strlen ("auto"));
1562 type
= savestring ("auto", strlen ("auto"));
1563 range
= savestring ("auto", strlen ("auto"));
1564 case_sensitive
= savestring ("auto",strlen ("auto"));
1566 /* Have the above take effect */
1567 set_language (language_auto
);