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"
28 /* Print the character C on STREAM as part of the contents of a literal
29 string whose delimiter is QUOTER. Note that that format for printing
30 characters and strings is language specific.
31 FIXME: This is a copy of the same function from c-exp.y. It should
32 be replaced with a true Modula version.
36 emit_char (c, stream, quoter)
42 c &= 0xFF; /* Avoid sign bit follies */
44 if (PRINT_LITERAL_FORM (c))
46 if (c == '\\' || c == quoter)
48 fputs_filtered ("\\", stream);
50 fprintf_filtered (stream, "%c", c);
57 fputs_filtered ("\\n", stream);
60 fputs_filtered ("\\b", stream);
63 fputs_filtered ("\\t", stream);
66 fputs_filtered ("\\f", stream);
69 fputs_filtered ("\\r", stream);
72 fputs_filtered ("\\e", stream);
75 fputs_filtered ("\\a", stream);
78 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
84 /* FIXME: This is a copy of the same function from c-exp.y. It should
85 be replaced with a true Modula version. */
88 m2_printchar (c, stream)
92 fputs_filtered ("'", stream);
93 emit_char (c, stream, '\'');
94 fputs_filtered ("'", stream);
97 /* Print the character string STRING, printing at most LENGTH characters.
98 Printing stops early if the number hits print_max; repeat counts
99 are printed as appropriate. Print ellipses at the end if we
100 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
101 FIXME: This is a copy of the same function from c-exp.y. It should
102 be replaced with a true Modula version. */
105 m2_printstr (stream, string, length, force_ellipses)
111 register unsigned int i;
112 unsigned int things_printed = 0;
115 extern int inspect_it;
116 extern int repeat_count_threshold;
117 extern int print_max;
121 fputs_filtered ("\"\"", stdout);
125 for (i = 0; i < length && things_printed < print_max; ++i)
127 /* Position of the character we are examining
128 to see whether it is repeated. */
130 /* Number of repetitions we have detected so far. */
137 fputs_filtered (", ", stream);
143 while (rep1 < length && string[rep1] == string[i])
149 if (reps > repeat_count_threshold)
154 fputs_filtered ("\\\", ", stream);
156 fputs_filtered ("\", ", stream);
159 m2_printchar (string[i], stream);
160 fprintf_filtered (stream, " <repeats %u times>", reps);
162 things_printed += repeat_count_threshold;
170 fputs_filtered ("\\\"", stream);
172 fputs_filtered ("\"", stream);
175 emit_char (string[i], stream, '"');
180 /* Terminate the quotes if necessary. */
184 fputs_filtered ("\\\"", stream);
186 fputs_filtered ("\"", stream);
189 if (force_ellipses || i < length)
190 fputs_filtered ("...", stream);
193 /* FIXME: This is a copy of c_create_fundamental_type(), before
194 all the non-C types were stripped from it. Needs to be fixed
195 by an experienced Modula programmer. */
198 m2_create_fundamental_type (objfile, typeid)
199 struct objfile *objfile;
202 register struct type *type = NULL;
207 /* FIXME: For now, if we are asked to produce a type not in this
208 language, create the equivalent of a C integer type with the
209 name "<?type?>". When all the dust settles from the type
210 reconstruction work, this should probably become an error. */
211 type = init_type (TYPE_CODE_INT,
212 TARGET_INT_BIT / TARGET_CHAR_BIT,
213 0, "<?type?>", objfile);
214 warning ("internal error: no Modula fundamental type %d", typeid);
217 type = init_type (TYPE_CODE_VOID,
218 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
222 type = init_type (TYPE_CODE_BOOL,
223 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
224 TYPE_FLAG_UNSIGNED, "boolean", objfile);
227 type = init_type (TYPE_CODE_STRING,
228 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
229 0, "string", objfile);
232 type = init_type (TYPE_CODE_INT,
233 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
237 type = init_type (TYPE_CODE_INT,
238 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
239 TYPE_FLAG_SIGNED, "signed char", objfile);
241 case FT_UNSIGNED_CHAR:
242 type = init_type (TYPE_CODE_INT,
243 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
244 TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
247 type = init_type (TYPE_CODE_INT,
248 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
249 0, "short", objfile);
251 case FT_SIGNED_SHORT:
252 type = init_type (TYPE_CODE_INT,
253 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
254 TYPE_FLAG_SIGNED, "short", objfile); /* FIXME-fnf */
256 case FT_UNSIGNED_SHORT:
257 type = init_type (TYPE_CODE_INT,
258 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
259 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
262 type = init_type (TYPE_CODE_INT,
263 TARGET_INT_BIT / TARGET_CHAR_BIT,
266 case FT_SIGNED_INTEGER:
267 type = init_type (TYPE_CODE_INT,
268 TARGET_INT_BIT / TARGET_CHAR_BIT,
269 TYPE_FLAG_SIGNED, "int", objfile); /* FIXME -fnf */
271 case FT_UNSIGNED_INTEGER:
272 type = init_type (TYPE_CODE_INT,
273 TARGET_INT_BIT / TARGET_CHAR_BIT,
274 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
276 case FT_FIXED_DECIMAL:
277 type = init_type (TYPE_CODE_INT,
278 TARGET_INT_BIT / TARGET_CHAR_BIT,
279 0, "fixed decimal", objfile);
282 type = init_type (TYPE_CODE_INT,
283 TARGET_LONG_BIT / TARGET_CHAR_BIT,
287 type = init_type (TYPE_CODE_INT,
288 TARGET_LONG_BIT / TARGET_CHAR_BIT,
289 TYPE_FLAG_SIGNED, "long", objfile); /* FIXME -fnf */
291 case FT_UNSIGNED_LONG:
292 type = init_type (TYPE_CODE_INT,
293 TARGET_LONG_BIT / TARGET_CHAR_BIT,
294 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
297 type = init_type (TYPE_CODE_INT,
298 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
299 0, "long long", objfile);
301 case FT_SIGNED_LONG_LONG:
302 type = init_type (TYPE_CODE_INT,
303 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
304 TYPE_FLAG_SIGNED, "signed long long", objfile);
306 case FT_UNSIGNED_LONG_LONG:
307 type = init_type (TYPE_CODE_INT,
308 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
309 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
312 type = init_type (TYPE_CODE_FLT,
313 TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
314 0, "float", objfile);
316 case FT_DBL_PREC_FLOAT:
317 type = init_type (TYPE_CODE_FLT,
318 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
319 0, "double", objfile);
321 case FT_FLOAT_DECIMAL:
322 type = init_type (TYPE_CODE_FLT,
323 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
324 0, "floating decimal", objfile);
326 case FT_EXT_PREC_FLOAT:
327 type = init_type (TYPE_CODE_FLT,
328 TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
329 0, "long double", objfile);
332 type = init_type (TYPE_CODE_FLT,
333 TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
334 0, "complex", objfile);
336 case FT_DBL_PREC_COMPLEX:
337 type = init_type (TYPE_CODE_FLT,
338 TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
339 0, "double complex", objfile);
341 case FT_EXT_PREC_COMPLEX:
342 type = init_type (TYPE_CODE_FLT,
343 TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
344 0, "long double complex", objfile);
351 /* Table of operators and their precedences for printing expressions. */
353 static const struct op_print m2_op_print_tab[] = {
354 {"+", BINOP_ADD, PREC_ADD, 0},
355 {"+", UNOP_PLUS, PREC_PREFIX, 0},
356 {"-", BINOP_SUB, PREC_ADD, 0},
357 {"-", UNOP_NEG, PREC_PREFIX, 0},
358 {"*", BINOP_MUL, PREC_MUL, 0},
359 {"/", BINOP_DIV, PREC_MUL, 0},
360 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
361 {"MOD", BINOP_REM, PREC_MUL, 0},
362 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
363 {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
364 {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
365 {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
366 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
367 {"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
368 {"<=", BINOP_LEQ, PREC_ORDER, 0},
369 {">=", BINOP_GEQ, PREC_ORDER, 0},
370 {">", BINOP_GTR, PREC_ORDER, 0},
371 {"<", BINOP_LESS, PREC_ORDER, 0},
372 {"^", UNOP_IND, PREC_PREFIX, 0},
373 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
377 /* The built-in types of Modula-2. */
379 struct type *builtin_type_m2_char;
380 struct type *builtin_type_m2_int;
381 struct type *builtin_type_m2_card;
382 struct type *builtin_type_m2_real;
383 struct type *builtin_type_m2_bool;
385 struct type ** const (m2_builtin_types[]) =
387 &builtin_type_m2_char,
388 &builtin_type_m2_int,
389 &builtin_type_m2_card,
390 &builtin_type_m2_real,
391 &builtin_type_m2_bool,
395 const struct language_defn m2_language_defn = {
401 m2_parse, /* parser */
402 m2_error, /* parser error function */
403 m2_printchar, /* Print character constant */
404 m2_printstr, /* function to print string constant */
405 m2_create_fundamental_type, /* Create fundamental type in this language */
406 m2_print_type, /* Print a type using appropriate syntax */
407 m2_val_print, /* Print a value using appropriate syntax */
408 &builtin_type_m2_int, /* longest signed integral type */
409 &builtin_type_m2_card, /* longest unsigned integral type */
410 &builtin_type_m2_real, /* longest floating point type */
411 {"", "", "", ""}, /* Binary format info */
412 {"%oB", "", "o", "B"}, /* Octal format info */
413 {"%d", "", "d", ""}, /* Decimal format info */
414 {"0%XH", "0", "X", "H"}, /* Hex format info */
415 m2_op_print_tab, /* expression operators for printing */
419 /* Initialization for Modula-2 */
422 _initialize_m2_language ()
424 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
425 builtin_type_m2_int =
426 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
428 "INTEGER", (struct objfile *) NULL);
429 builtin_type_m2_card =
430 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
432 "CARDINAL", (struct objfile *) NULL);
433 builtin_type_m2_real =
434 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
436 "REAL", (struct objfile *) NULL);
437 builtin_type_m2_char =
438 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
440 "CHAR", (struct objfile *) NULL);
441 builtin_type_m2_bool =
442 init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
444 "BOOLEAN", (struct objfile *) NULL);
446 TYPE_NFIELDS(builtin_type_m2_bool) = 2;
447 TYPE_FIELDS(builtin_type_m2_bool) =
448 (struct field *) xmalloc (sizeof (struct field) * 2);
449 TYPE_FIELD_BITPOS(builtin_type_m2_bool,0) = 0;
450 TYPE_FIELD_NAME(builtin_type_m2_bool,0) = (char *)xmalloc(6);
451 strcpy(TYPE_FIELD_NAME(builtin_type_m2_bool,0),"FALSE");
452 TYPE_FIELD_BITPOS(builtin_type_m2_bool,1) = 1;
453 TYPE_FIELD_NAME(builtin_type_m2_bool,1) = (char *)xmalloc(5);
454 strcpy(TYPE_FIELD_NAME(builtin_type_m2_bool,1),"TRUE");
456 add_language (&m2_language_defn);