1 /* Modula 2 language support routines for GDB, the GNU debugger.
2 Copyright 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #include "expression.h"
24 #include "parser-defs.h"
29 /* Print the character C on STREAM as part of the contents of a literal
30 string whose delimiter is QUOTER. Note that that format for printing
31 characters and strings is language specific.
32 FIXME: This is a copy of the same function from c-exp.y. It should
33 be replaced with a true Modula version.
37 emit_char (c, stream, quoter)
43 c &= 0xFF; /* Avoid sign bit follies */
45 if (PRINT_LITERAL_FORM (c))
47 if (c == '\\' || c == quoter)
49 fputs_filtered ("\\", stream);
51 fprintf_filtered (stream, "%c", c);
58 fputs_filtered ("\\n", stream);
61 fputs_filtered ("\\b", stream);
64 fputs_filtered ("\\t", stream);
67 fputs_filtered ("\\f", stream);
70 fputs_filtered ("\\r", stream);
73 fputs_filtered ("\\e", stream);
76 fputs_filtered ("\\a", stream);
79 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
85 /* FIXME: This is a copy of the same function from c-exp.y. It should
86 be replaced with a true Modula version. */
89 m2_printchar (c, stream)
93 fputs_filtered ("'", stream);
94 emit_char (c, stream, '\'');
95 fputs_filtered ("'", stream);
98 /* Print the character string STRING, printing at most LENGTH characters.
99 Printing stops early if the number hits print_max; repeat counts
100 are printed as appropriate. Print ellipses at the end if we
101 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
102 FIXME: This is a copy of the same function from c-exp.y. It should
103 be replaced with a true Modula version. */
106 m2_printstr (stream, string, length, force_ellipses)
112 register unsigned int i;
113 unsigned int things_printed = 0;
116 extern int inspect_it;
117 extern int repeat_count_threshold;
118 extern int print_max;
122 fputs_filtered ("\"\"", gdb_stdout);
126 for (i = 0; i < length && things_printed < print_max; ++i)
128 /* Position of the character we are examining
129 to see whether it is repeated. */
131 /* Number of repetitions we have detected so far. */
138 fputs_filtered (", ", stream);
144 while (rep1 < length && string[rep1] == string[i])
150 if (reps > repeat_count_threshold)
155 fputs_filtered ("\\\", ", stream);
157 fputs_filtered ("\", ", stream);
160 m2_printchar (string[i], stream);
161 fprintf_filtered (stream, " <repeats %u times>", reps);
163 things_printed += repeat_count_threshold;
171 fputs_filtered ("\\\"", stream);
173 fputs_filtered ("\"", stream);
176 emit_char (string[i], stream, '"');
181 /* Terminate the quotes if necessary. */
185 fputs_filtered ("\\\"", stream);
187 fputs_filtered ("\"", stream);
190 if (force_ellipses || i < length)
191 fputs_filtered ("...", stream);
194 /* FIXME: This is a copy of c_create_fundamental_type(), before
195 all the non-C types were stripped from it. Needs to be fixed
196 by an experienced Modula programmer. */
199 m2_create_fundamental_type (objfile, typeid)
200 struct objfile *objfile;
203 register struct type *type = NULL;
208 /* FIXME: For now, if we are asked to produce a type not in this
209 language, create the equivalent of a C integer type with the
210 name "<?type?>". When all the dust settles from the type
211 reconstruction work, this should probably become an error. */
212 type = init_type (TYPE_CODE_INT,
213 TARGET_INT_BIT / TARGET_CHAR_BIT,
214 0, "<?type?>", objfile);
215 warning ("internal error: no Modula fundamental type %d", typeid);
218 type = init_type (TYPE_CODE_VOID,
219 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
223 type = init_type (TYPE_CODE_BOOL,
224 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
225 TYPE_FLAG_UNSIGNED, "boolean", objfile);
228 type = init_type (TYPE_CODE_STRING,
229 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
230 0, "string", objfile);
233 type = init_type (TYPE_CODE_INT,
234 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
238 type = init_type (TYPE_CODE_INT,
239 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
240 0, "signed char", objfile);
242 case FT_UNSIGNED_CHAR:
243 type = init_type (TYPE_CODE_INT,
244 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
245 TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
248 type = init_type (TYPE_CODE_INT,
249 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
250 0, "short", objfile);
252 case FT_SIGNED_SHORT:
253 type = init_type (TYPE_CODE_INT,
254 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
255 0, "short", objfile); /* FIXME-fnf */
257 case FT_UNSIGNED_SHORT:
258 type = init_type (TYPE_CODE_INT,
259 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
260 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
263 type = init_type (TYPE_CODE_INT,
264 TARGET_INT_BIT / TARGET_CHAR_BIT,
267 case FT_SIGNED_INTEGER:
268 type = init_type (TYPE_CODE_INT,
269 TARGET_INT_BIT / TARGET_CHAR_BIT,
270 0, "int", objfile); /* FIXME -fnf */
272 case FT_UNSIGNED_INTEGER:
273 type = init_type (TYPE_CODE_INT,
274 TARGET_INT_BIT / TARGET_CHAR_BIT,
275 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
277 case FT_FIXED_DECIMAL:
278 type = init_type (TYPE_CODE_INT,
279 TARGET_INT_BIT / TARGET_CHAR_BIT,
280 0, "fixed decimal", objfile);
283 type = init_type (TYPE_CODE_INT,
284 TARGET_LONG_BIT / TARGET_CHAR_BIT,
288 type = init_type (TYPE_CODE_INT,
289 TARGET_LONG_BIT / TARGET_CHAR_BIT,
290 0, "long", objfile); /* FIXME -fnf */
292 case FT_UNSIGNED_LONG:
293 type = init_type (TYPE_CODE_INT,
294 TARGET_LONG_BIT / TARGET_CHAR_BIT,
295 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
298 type = init_type (TYPE_CODE_INT,
299 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
300 0, "long long", objfile);
302 case FT_SIGNED_LONG_LONG:
303 type = init_type (TYPE_CODE_INT,
304 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
305 0, "signed long long", objfile);
307 case FT_UNSIGNED_LONG_LONG:
308 type = init_type (TYPE_CODE_INT,
309 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
310 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
313 type = init_type (TYPE_CODE_FLT,
314 TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
315 0, "float", objfile);
317 case FT_DBL_PREC_FLOAT:
318 type = init_type (TYPE_CODE_FLT,
319 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
320 0, "double", objfile);
322 case FT_FLOAT_DECIMAL:
323 type = init_type (TYPE_CODE_FLT,
324 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
325 0, "floating decimal", objfile);
327 case FT_EXT_PREC_FLOAT:
328 type = init_type (TYPE_CODE_FLT,
329 TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
330 0, "long double", objfile);
333 type = init_type (TYPE_CODE_COMPLEX,
334 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
335 0, "complex", objfile);
336 TYPE_TARGET_TYPE (type)
337 = m2_create_fundamental_type (objfile, FT_FLOAT);
339 case FT_DBL_PREC_COMPLEX:
340 type = init_type (TYPE_CODE_COMPLEX,
341 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
342 0, "double complex", objfile);
343 TYPE_TARGET_TYPE (type)
344 = m2_create_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
346 case FT_EXT_PREC_COMPLEX:
347 type = init_type (TYPE_CODE_COMPLEX,
348 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
349 0, "long double complex", objfile);
350 TYPE_TARGET_TYPE (type)
351 = m2_create_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
358 /* Table of operators and their precedences for printing expressions. */
360 static const struct op_print m2_op_print_tab[] = {
361 {"+", BINOP_ADD, PREC_ADD, 0},
362 {"+", UNOP_PLUS, PREC_PREFIX, 0},
363 {"-", BINOP_SUB, PREC_ADD, 0},
364 {"-", UNOP_NEG, PREC_PREFIX, 0},
365 {"*", BINOP_MUL, PREC_MUL, 0},
366 {"/", BINOP_DIV, PREC_MUL, 0},
367 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
368 {"MOD", BINOP_REM, PREC_MUL, 0},
369 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
370 {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
371 {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
372 {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
373 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
374 {"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
375 {"<=", BINOP_LEQ, PREC_ORDER, 0},
376 {">=", BINOP_GEQ, PREC_ORDER, 0},
377 {">", BINOP_GTR, PREC_ORDER, 0},
378 {"<", BINOP_LESS, PREC_ORDER, 0},
379 {"^", UNOP_IND, PREC_PREFIX, 0},
380 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
381 {"CAP", UNOP_CAP, PREC_BUILTIN_FUNCTION, 0},
382 {"CHR", UNOP_CHR, PREC_BUILTIN_FUNCTION, 0},
383 {"ORD", UNOP_ORD, PREC_BUILTIN_FUNCTION, 0},
384 {"FLOAT",UNOP_FLOAT, PREC_BUILTIN_FUNCTION, 0},
385 {"HIGH", UNOP_HIGH, PREC_BUILTIN_FUNCTION, 0},
386 {"MAX", UNOP_MAX, PREC_BUILTIN_FUNCTION, 0},
387 {"MIN", UNOP_MIN, PREC_BUILTIN_FUNCTION, 0},
388 {"ODD", UNOP_ODD, PREC_BUILTIN_FUNCTION, 0},
389 {"TRUNC", UNOP_TRUNC, PREC_BUILTIN_FUNCTION, 0},
393 /* The built-in types of Modula-2. */
395 struct type *builtin_type_m2_char;
396 struct type *builtin_type_m2_int;
397 struct type *builtin_type_m2_card;
398 struct type *builtin_type_m2_real;
399 struct type *builtin_type_m2_bool;
401 struct type ** const (m2_builtin_types[]) =
403 &builtin_type_m2_char,
404 &builtin_type_m2_int,
405 &builtin_type_m2_card,
406 &builtin_type_m2_real,
407 &builtin_type_m2_bool,
411 const struct language_defn m2_language_defn = {
417 m2_parse, /* parser */
418 m2_error, /* parser error function */
419 evaluate_subexp_standard,
420 m2_printchar, /* Print character constant */
421 m2_printstr, /* function to print string constant */
422 m2_create_fundamental_type, /* Create fundamental type in this language */
423 m2_print_type, /* Print a type using appropriate syntax */
424 m2_val_print, /* Print a value using appropriate syntax */
425 c_value_print, /* Print a top-level value */
426 {"", "", "", ""}, /* Binary format info */
427 {"%loB", "", "o", "B"}, /* Octal format info */
428 {"%ld", "", "d", ""}, /* Decimal format info */
429 {"0%lXH", "0", "X", "H"}, /* Hex format info */
430 m2_op_print_tab, /* expression operators for printing */
431 0, /* arrays are first-class (not c-style) */
432 0, /* String lower bound */
433 &builtin_type_m2_char, /* Type of string elements */
437 /* Initialization for Modula-2 */
440 _initialize_m2_language ()
442 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
443 builtin_type_m2_int =
444 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
446 "INTEGER", (struct objfile *) NULL);
447 builtin_type_m2_card =
448 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
450 "CARDINAL", (struct objfile *) NULL);
451 builtin_type_m2_real =
452 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
454 "REAL", (struct objfile *) NULL);
455 builtin_type_m2_char =
456 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
458 "CHAR", (struct objfile *) NULL);
459 builtin_type_m2_bool =
460 init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
462 "BOOLEAN", (struct objfile *) NULL);
464 add_language (&m2_language_defn);