Introduce class completion_tracker & rewrite completion<->readline interaction
[deliverable/binutils-gdb.git] / gdb / f-lang.c
CommitLineData
c906108c 1/* Fortran language support routines for GDB, the GNU debugger.
ce27fb25 2
61baf725 3 Copyright (C) 1993-2017 Free Software Foundation, Inc.
ce27fb25 4
c906108c
SS
5 Contributed by Motorola. Adapted from the C parser by Farooq Butt
6 (fmbutt@engage.sps.mot.com).
7
c5aa993b 8 This file is part of GDB.
c906108c 9
c5aa993b
JM
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
a9762ec7 12 the Free Software Foundation; either version 3 of the License, or
c5aa993b 13 (at your option) any later version.
c906108c 14
c5aa993b
JM
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
c906108c 19
c5aa993b 20 You should have received a copy of the GNU General Public License
a9762ec7 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c
SS
22
23#include "defs.h"
c906108c
SS
24#include "symtab.h"
25#include "gdbtypes.h"
26#include "expression.h"
27#include "parser-defs.h"
28#include "language.h"
a53b64ea 29#include "varobj.h"
c906108c 30#include "f-lang.h"
745b8ca0 31#include "valprint.h"
5f9a71c3 32#include "value.h"
f55ee35c 33#include "cp-support.h"
3b2b8fea 34#include "charset.h"
8e069a98 35#include "c-lang.h"
c906108c 36
c906108c 37
c906108c
SS
38/* Local functions */
39
a14ed312 40extern void _initialize_f_language (void);
c906108c 41
6c7a06a3
TT
42static void f_printchar (int c, struct type *type, struct ui_file * stream);
43static void f_emit_char (int c, struct type *type,
44 struct ui_file * stream, int quoter);
c906108c 45
3b2b8fea
TT
46/* Return the encoding that should be used for the character type
47 TYPE. */
48
49static const char *
50f_get_encoding (struct type *type)
51{
52 const char *encoding;
53
54 switch (TYPE_LENGTH (type))
55 {
56 case 1:
57 encoding = target_charset (get_type_arch (type));
58 break;
59 case 4:
60 if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
61 encoding = "UTF-32BE";
62 else
63 encoding = "UTF-32LE";
64 break;
65
66 default:
67 error (_("unrecognized character type"));
68 }
69
70 return encoding;
71}
72
c906108c
SS
73/* Print the character C on STREAM as part of the contents of a literal
74 string whose delimiter is QUOTER. Note that that format for printing
75 characters and strings is language specific.
76 FIXME: This is a copy of the same function from c-exp.y. It should
77 be replaced with a true F77 version. */
78
79static void
6c7a06a3 80f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
c906108c 81{
3b2b8fea 82 const char *encoding = f_get_encoding (type);
c5aa993b 83
3b2b8fea 84 generic_emit_char (c, type, stream, quoter, encoding);
c906108c
SS
85}
86
3b2b8fea 87/* Implementation of la_printchar. */
c906108c
SS
88
89static void
6c7a06a3 90f_printchar (int c, struct type *type, struct ui_file *stream)
c906108c
SS
91{
92 fputs_filtered ("'", stream);
6c7a06a3 93 LA_EMIT_CHAR (c, type, stream, '\'');
c906108c
SS
94 fputs_filtered ("'", stream);
95}
96
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
0963b4bd 102 be replaced with a true F77 version. */
c906108c
SS
103
104static void
6c7a06a3 105f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
be759fcf 106 unsigned int length, const char *encoding, int force_ellipses,
79a45b7d 107 const struct value_print_options *options)
c906108c 108{
3b2b8fea 109 const char *type_encoding = f_get_encoding (type);
c5aa993b 110
3b2b8fea
TT
111 if (TYPE_LENGTH (type) == 4)
112 fputs_filtered ("4_", stream);
c5aa993b 113
3b2b8fea
TT
114 if (!encoding || !*encoding)
115 encoding = type_encoding;
c5aa993b 116
3b2b8fea
TT
117 generic_printstr (stream, type, string, length, encoding,
118 force_ellipses, '\'', 0, options);
c906108c 119}
c906108c 120\f
c5aa993b 121
c906108c
SS
122/* Table of operators and their precedences for printing expressions. */
123
c5aa993b
JM
124static const struct op_print f_op_print_tab[] =
125{
126 {"+", BINOP_ADD, PREC_ADD, 0},
127 {"+", UNOP_PLUS, PREC_PREFIX, 0},
128 {"-", BINOP_SUB, PREC_ADD, 0},
129 {"-", UNOP_NEG, PREC_PREFIX, 0},
130 {"*", BINOP_MUL, PREC_MUL, 0},
131 {"/", BINOP_DIV, PREC_MUL, 0},
132 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
133 {"MOD", BINOP_REM, PREC_MUL, 0},
134 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
135 {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
136 {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
137 {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
138 {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
139 {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
140 {".LE.", BINOP_LEQ, PREC_ORDER, 0},
141 {".GE.", BINOP_GEQ, PREC_ORDER, 0},
142 {".GT.", BINOP_GTR, PREC_ORDER, 0},
143 {".LT.", BINOP_LESS, PREC_ORDER, 0},
144 {"**", UNOP_IND, PREC_PREFIX, 0},
145 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
f486487f 146 {NULL, OP_NULL, PREC_REPEAT, 0}
c906108c
SS
147};
148\f
cad351d1
UW
149enum f_primitive_types {
150 f_primitive_type_character,
151 f_primitive_type_logical,
152 f_primitive_type_logical_s1,
153 f_primitive_type_logical_s2,
ce4b0682 154 f_primitive_type_logical_s8,
cad351d1
UW
155 f_primitive_type_integer,
156 f_primitive_type_integer_s2,
157 f_primitive_type_real,
158 f_primitive_type_real_s8,
159 f_primitive_type_real_s16,
160 f_primitive_type_complex_s8,
161 f_primitive_type_complex_s16,
162 f_primitive_type_void,
163 nr_f_primitive_types
c906108c
SS
164};
165
cad351d1
UW
166static void
167f_language_arch_info (struct gdbarch *gdbarch,
168 struct language_arch_info *lai)
169{
54ef06c7
UW
170 const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
171
172 lai->string_char_type = builtin->builtin_character;
cad351d1
UW
173 lai->primitive_type_vector
174 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
175 struct type *);
176
177 lai->primitive_type_vector [f_primitive_type_character]
54ef06c7 178 = builtin->builtin_character;
cad351d1 179 lai->primitive_type_vector [f_primitive_type_logical]
54ef06c7 180 = builtin->builtin_logical;
cad351d1 181 lai->primitive_type_vector [f_primitive_type_logical_s1]
54ef06c7 182 = builtin->builtin_logical_s1;
cad351d1 183 lai->primitive_type_vector [f_primitive_type_logical_s2]
54ef06c7 184 = builtin->builtin_logical_s2;
ce4b0682
SDJ
185 lai->primitive_type_vector [f_primitive_type_logical_s8]
186 = builtin->builtin_logical_s8;
cad351d1 187 lai->primitive_type_vector [f_primitive_type_real]
54ef06c7 188 = builtin->builtin_real;
cad351d1 189 lai->primitive_type_vector [f_primitive_type_real_s8]
54ef06c7 190 = builtin->builtin_real_s8;
cad351d1 191 lai->primitive_type_vector [f_primitive_type_real_s16]
54ef06c7 192 = builtin->builtin_real_s16;
cad351d1 193 lai->primitive_type_vector [f_primitive_type_complex_s8]
54ef06c7 194 = builtin->builtin_complex_s8;
cad351d1 195 lai->primitive_type_vector [f_primitive_type_complex_s16]
54ef06c7 196 = builtin->builtin_complex_s16;
cad351d1 197 lai->primitive_type_vector [f_primitive_type_void]
54ef06c7 198 = builtin->builtin_void;
fbb06eb1
UW
199
200 lai->bool_type_symbol = "logical";
201 lai->bool_type_default = builtin->builtin_logical_s2;
cad351d1
UW
202}
203
f55ee35c
JK
204/* Remove the modules separator :: from the default break list. */
205
67cb5b2d 206static const char *
f55ee35c
JK
207f_word_break_characters (void)
208{
209 static char *retval;
210
211 if (!retval)
212 {
213 char *s;
214
215 retval = xstrdup (default_word_break_characters ());
216 s = strchr (retval, ':');
217 if (s)
218 {
219 char *last_char = &s[strlen (s) - 1];
220
221 *s = *last_char;
222 *last_char = 0;
223 }
224 }
225 return retval;
226}
227
3e43a32a
MS
228/* Consider the modules separator :: as a valid symbol name character
229 class. */
f55ee35c 230
eb3ff9a5
PA
231static void
232f_collect_symbol_completion_matches (completion_tracker &tracker,
233 const char *text, const char *word,
234 enum type_code code)
f55ee35c 235{
eb3ff9a5
PA
236 default_collect_symbol_completion_matches_break_on (tracker,
237 text, word, ":", code);
f55ee35c
JK
238}
239
56618e20
TT
240static const char *f_extensions[] =
241{
242 ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
243 ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08",
244 NULL
245};
246
c5aa993b
JM
247const struct language_defn f_language_defn =
248{
c906108c 249 "fortran",
6abde28f 250 "Fortran",
c906108c 251 language_fortran,
c906108c 252 range_check_on,
63872f9d 253 case_sensitive_off,
7ca2d3a3 254 array_column_major,
9a044a89 255 macro_expansion_no,
56618e20 256 f_extensions,
5f9769d1 257 &exp_descriptor_standard,
c906108c 258 f_parse, /* parser */
b3f11165 259 f_yyerror, /* parser error function */
e85c3284 260 null_post_parser,
c906108c
SS
261 f_printchar, /* Print character constant */
262 f_printstr, /* function to print string constant */
263 f_emit_char, /* Function to print a single character */
c5aa993b 264 f_print_type, /* Print a type using appropriate syntax */
5c6ce71d 265 default_print_typedef, /* Print a typedef using appropriate syntax */
c906108c 266 f_val_print, /* Print a value using appropriate syntax */
c5aa993b 267 c_value_print, /* FIXME */
a5ee536b 268 default_read_var_value, /* la_read_var_value */
f636b87d 269 NULL, /* Language specific skip_trampoline */
2b2d9e11 270 NULL, /* name_of_this */
f55ee35c 271 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
b368761e 272 basic_lookup_transparent_type,/* lookup_transparent_type */
8b302db8
TT
273
274 /* We could support demangling here to provide module namespaces
275 also for inferiors with only minimal symbol table (ELF symbols).
276 Just the mangling standard is not standardized across compilers
277 and there is no DW_AT_producer available for inferiors with only
278 the ELF symbols to check the mangling kind. */
9a3d7dfd 279 NULL, /* Language specific symbol demangler */
8b302db8 280 NULL,
3e43a32a
MS
281 NULL, /* Language specific
282 class_name_from_physname */
c906108c
SS
283 f_op_print_tab, /* expression operators for printing */
284 0, /* arrays are first-class (not c-style) */
285 1, /* String lower bound */
f55ee35c 286 f_word_break_characters,
eb3ff9a5 287 f_collect_symbol_completion_matches,
cad351d1 288 f_language_arch_info,
e79af960 289 default_print_array_index,
41f1b697 290 default_pass_by_reference,
ae6a3a4c 291 default_get_string,
43cc5389 292 c_watch_location_expression,
1a119f36 293 NULL, /* la_get_symbol_name_cmp */
f8eba3c6 294 iterate_over_symbols,
a53b64ea 295 &default_varobj_ops,
bb2ec1b3
TT
296 NULL,
297 NULL,
c906108c 298 LANG_MAGIC
c5aa993b 299};
c906108c 300
54ef06c7
UW
301static void *
302build_fortran_types (struct gdbarch *gdbarch)
c906108c 303{
54ef06c7
UW
304 struct builtin_f_type *builtin_f_type
305 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
306
e9bb382b
UW
307 builtin_f_type->builtin_void
308 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
309
310 builtin_f_type->builtin_character
311 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
312
313 builtin_f_type->builtin_logical_s1
314 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
315
316 builtin_f_type->builtin_integer_s2
317 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
318 "integer*2");
319
320 builtin_f_type->builtin_logical_s2
321 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
322 "logical*2");
323
ce4b0682
SDJ
324 builtin_f_type->builtin_logical_s8
325 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
326 "logical*8");
327
e9bb382b
UW
328 builtin_f_type->builtin_integer
329 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
330 "integer");
331
332 builtin_f_type->builtin_logical
333 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
334 "logical*4");
335
336 builtin_f_type->builtin_real
337 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
49f190bc 338 "real", gdbarch_float_format (gdbarch));
e9bb382b
UW
339 builtin_f_type->builtin_real_s8
340 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
49f190bc 341 "real*8", gdbarch_double_format (gdbarch));
e9bb382b
UW
342 builtin_f_type->builtin_real_s16
343 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
49f190bc 344 "real*16", gdbarch_long_double_format (gdbarch));
e9bb382b
UW
345
346 builtin_f_type->builtin_complex_s8
347 = arch_complex_type (gdbarch, "complex*8",
348 builtin_f_type->builtin_real);
349 builtin_f_type->builtin_complex_s16
350 = arch_complex_type (gdbarch, "complex*16",
351 builtin_f_type->builtin_real_s8);
352 builtin_f_type->builtin_complex_s32
353 = arch_complex_type (gdbarch, "complex*32",
354 builtin_f_type->builtin_real_s16);
54ef06c7
UW
355
356 return builtin_f_type;
357}
358
359static struct gdbarch_data *f_type_data;
360
361const struct builtin_f_type *
362builtin_f_type (struct gdbarch *gdbarch)
363{
9a3c8263 364 return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data);
4e845cd3
MS
365}
366
367void
368_initialize_f_language (void)
369{
54ef06c7 370 f_type_data = gdbarch_data_register_post_init (build_fortran_types);
c906108c 371
c906108c
SS
372 add_language (&f_language_defn);
373}
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