1 /* Modula 2 language support routines for GDB, the GNU debugger.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2002
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include "expression.h"
26 #include "parser-defs.h"
32 extern void _initialize_m2_language (void);
33 static struct type *m2_create_fundamental_type (struct objfile *, int);
34 static void m2_printstr (struct ui_file * stream, char *string,
35 unsigned int length, int width,
37 static void m2_printchar (int, struct ui_file *);
38 static void m2_emit_char (int, struct ui_file *, int);
40 /* Print the character C on STREAM as part of the contents of a literal
41 string whose delimiter is QUOTER. Note that that format for printing
42 characters and strings is language specific.
43 FIXME: This is a copy of the same function from c-exp.y. It should
44 be replaced with a true Modula version.
48 m2_emit_char (register int c, struct ui_file *stream, int quoter)
51 c &= 0xFF; /* Avoid sign bit follies */
53 if (PRINT_LITERAL_FORM (c))
55 if (c == '\\' || c == quoter)
57 fputs_filtered ("\\", stream);
59 fprintf_filtered (stream, "%c", c);
66 fputs_filtered ("\\n", stream);
69 fputs_filtered ("\\b", stream);
72 fputs_filtered ("\\t", stream);
75 fputs_filtered ("\\f", stream);
78 fputs_filtered ("\\r", stream);
81 fputs_filtered ("\\e", stream);
84 fputs_filtered ("\\a", stream);
87 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
93 /* FIXME: This is a copy of the same function from c-exp.y. It should
94 be replaced with a true Modula version. */
97 m2_printchar (int c, struct ui_file *stream)
99 fputs_filtered ("'", stream);
100 LA_EMIT_CHAR (c, stream, '\'');
101 fputs_filtered ("'", stream);
104 /* Print the character string STRING, printing at most LENGTH characters.
105 Printing stops early if the number hits print_max; repeat counts
106 are printed as appropriate. Print ellipses at the end if we
107 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
108 FIXME: This is a copy of the same function from c-exp.y. It should
109 be replaced with a true Modula version. */
112 m2_printstr (struct ui_file *stream, char *string, unsigned int length,
113 int width, int force_ellipses)
115 register unsigned int i;
116 unsigned int things_printed = 0;
119 extern int inspect_it;
123 fputs_filtered ("\"\"", gdb_stdout);
127 for (i = 0; i < length && things_printed < print_max; ++i)
129 /* Position of the character we are examining
130 to see whether it is repeated. */
132 /* Number of repetitions we have detected so far. */
139 fputs_filtered (", ", stream);
145 while (rep1 < length && string[rep1] == string[i])
151 if (reps > repeat_count_threshold)
156 fputs_filtered ("\\\", ", stream);
158 fputs_filtered ("\", ", stream);
161 m2_printchar (string[i], stream);
162 fprintf_filtered (stream, " <repeats %u times>", reps);
164 things_printed += repeat_count_threshold;
172 fputs_filtered ("\\\"", stream);
174 fputs_filtered ("\"", stream);
177 LA_EMIT_CHAR (string[i], stream, '"');
182 /* Terminate the quotes if necessary. */
186 fputs_filtered ("\\\"", stream);
188 fputs_filtered ("\"", stream);
191 if (force_ellipses || i < length)
192 fputs_filtered ("...", stream);
195 /* FIXME: This is a copy of c_create_fundamental_type(), before
196 all the non-C types were stripped from it. Needs to be fixed
197 by an experienced Modula programmer. */
200 m2_create_fundamental_type (struct objfile *objfile, int typeid)
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 0, "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 0, "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 0, "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 0, "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 0, "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_COMPLEX,
333 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
334 0, "complex", objfile);
335 TYPE_TARGET_TYPE (type)
336 = m2_create_fundamental_type (objfile, FT_FLOAT);
338 case FT_DBL_PREC_COMPLEX:
339 type = init_type (TYPE_CODE_COMPLEX,
340 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
341 0, "double complex", objfile);
342 TYPE_TARGET_TYPE (type)
343 = m2_create_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
345 case FT_EXT_PREC_COMPLEX:
346 type = init_type (TYPE_CODE_COMPLEX,
347 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
348 0, "long double complex", objfile);
349 TYPE_TARGET_TYPE (type)
350 = m2_create_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
357 /* Table of operators and their precedences for printing expressions. */
359 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 =
419 m2_parse, /* parser */
420 m2_error, /* parser error function */
421 evaluate_subexp_standard,
422 m2_printchar, /* Print character constant */
423 m2_printstr, /* function to print string constant */
424 m2_emit_char, /* Function to print a single character */
425 m2_create_fundamental_type, /* Create fundamental type in this language */
426 m2_print_type, /* Print a type using appropriate syntax */
427 m2_val_print, /* Print a value using appropriate syntax */
428 c_value_print, /* Print a top-level value */
429 {"", "", "", ""}, /* Binary format info */
430 {"%loB", "", "o", "B"}, /* Octal format info */
431 {"%ld", "", "d", ""}, /* Decimal format info */
432 {"0%lXH", "0", "X", "H"}, /* Hex format info */
433 m2_op_print_tab, /* expression operators for printing */
434 0, /* arrays are first-class (not c-style) */
435 0, /* String lower bound */
436 &builtin_type_m2_char, /* Type of string elements */
440 /* Initialization for Modula-2 */
443 _initialize_m2_language (void)
445 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
446 builtin_type_m2_int =
447 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
449 "INTEGER", (struct objfile *) NULL);
450 builtin_type_m2_card =
451 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
453 "CARDINAL", (struct objfile *) NULL);
454 builtin_type_m2_real =
455 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
457 "REAL", (struct objfile *) NULL);
458 builtin_type_m2_char =
459 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
461 "CHAR", (struct objfile *) NULL);
462 builtin_type_m2_bool =
463 init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
465 "BOOLEAN", (struct objfile *) NULL);
467 add_language (&m2_language_defn);