Commit | Line | Data |
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dbb605f5 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002, 2006, 2008 Free Software Foundation |
575888bd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
575888bd | 7 | * |
73be1d9e MV |
8 | * This library is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
575888bd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
575888bd | 19 | \f |
dbb605f5 LC |
20 | #ifdef HAVE_CONFIG_H |
21 | # include <config.h> | |
22 | #endif | |
575888bd | 23 | |
e6e2e95a MD |
24 | #include <errno.h> |
25 | ||
a0599745 | 26 | #include "libguile/_scm.h" |
4e047c3e | 27 | #include "libguile/async.h" |
a0599745 MD |
28 | #include "libguile/smob.h" |
29 | #include "libguile/alist.h" | |
30 | #include "libguile/debug.h" | |
31 | #include "libguile/hashtab.h" | |
32 | #include "libguile/hash.h" | |
33 | #include "libguile/ports.h" | |
34 | #include "libguile/root.h" | |
35 | #include "libguile/weaks.h" | |
575888bd | 36 | |
a0599745 MD |
37 | #include "libguile/validate.h" |
38 | #include "libguile/srcprop.h" | |
575888bd MD |
39 | \f |
40 | /* {Source Properties} | |
41 | * | |
42 | * Properties of source list expressions. | |
b0763985 | 43 | * Five of these have special meaning: |
575888bd MD |
44 | * |
45 | * filename string The name of the source file. | |
46 | * copy list A copy of the list expression. | |
47 | * line integer The source code line number. | |
48 | * column integer The source code column number. | |
49 | * breakpoint boolean Sets a breakpoint on this form. | |
50 | * | |
51 | * Most properties above can be set by the reader. | |
52 | * | |
53 | */ | |
54 | ||
85db4a2c DH |
55 | SCM_GLOBAL_SYMBOL (scm_sym_filename, "filename"); |
56 | SCM_GLOBAL_SYMBOL (scm_sym_copy, "copy"); | |
57 | SCM_GLOBAL_SYMBOL (scm_sym_line, "line"); | |
58 | SCM_GLOBAL_SYMBOL (scm_sym_column, "column"); | |
59 | SCM_GLOBAL_SYMBOL (scm_sym_breakpoint, "breakpoint"); | |
575888bd | 60 | |
575888bd | 61 | |
1cc91f1b | 62 | |
b0763985 | 63 | /* |
d00a0704 HWN |
64 | * Source properties are stored as double cells with the |
65 | * following layout: | |
b0763985 | 66 | |
d00a0704 HWN |
67 | * car = tag |
68 | * cbr = pos | |
69 | * ccr = copy | |
70 | * cdr = plist | |
71 | */ | |
b0763985 HWN |
72 | |
73 | #define SRCPROPSP(p) (SCM_SMOB_PREDICATE (scm_tc16_srcprops, (p))) | |
74 | #define SRCPROPBRK(p) (SCM_SMOB_FLAGS (p) & SCM_SOURCE_PROPERTY_FLAG_BREAK) | |
75 | #define SRCPROPPOS(p) (SCM_CELL_WORD(p,1)) | |
76 | #define SRCPROPLINE(p) (SRCPROPPOS(p) >> 12) | |
77 | #define SRCPROPCOL(p) (SRCPROPPOS(p) & 0x0fffL) | |
78 | #define SRCPROPCOPY(p) (SCM_CELL_OBJECT(p,2)) | |
79 | #define SRCPROPPLIST(p) (SCM_CELL_OBJECT_3(p)) | |
80 | #define SETSRCPROPBRK(p) \ | |
81 | (SCM_SET_SMOB_FLAGS ((p), \ | |
82 | SCM_SMOB_FLAGS (p) | SCM_SOURCE_PROPERTY_FLAG_BREAK)) | |
83 | #define CLEARSRCPROPBRK(p) \ | |
84 | (SCM_SET_SMOB_FLAGS ((p), \ | |
85 | SCM_SMOB_FLAGS (p) & ~SCM_SOURCE_PROPERTY_FLAG_BREAK)) | |
86 | #define SRCPROPMAKPOS(l, c) (((l) << 12) + (c)) | |
87 | #define SETSRCPROPPOS(p, l, c) (SCM_SET_CELL_WORD(p,1, SRCPROPMAKPOS (l, c))) | |
88 | #define SETSRCPROPLINE(p, l) SETSRCPROPPOS (p, l, SRCPROPCOL (p)) | |
89 | #define SETSRCPROPCOL(p, c) SETSRCPROPPOS (p, SRCPROPLINE (p), c) | |
80237dcc HWN |
90 | #define SETSRCPROPCOPY(p, c) (SCM_SET_CELL_WORD(p, 2, c)) |
91 | #define SETSRCPROPPLIST(p, l) (SCM_SET_CELL_WORD(p, 3, l)) | |
b0763985 HWN |
92 | |
93 | ||
94 | ||
95 | scm_t_bits scm_tc16_srcprops; | |
96 | ||
575888bd | 97 | static SCM |
e841c3e0 | 98 | srcprops_mark (SCM obj) |
575888bd | 99 | { |
575888bd MD |
100 | scm_gc_mark (SRCPROPCOPY (obj)); |
101 | return SRCPROPPLIST (obj); | |
102 | } | |
103 | ||
575888bd | 104 | static int |
e841c3e0 | 105 | srcprops_print (SCM obj, SCM port, scm_print_state *pstate) |
575888bd | 106 | { |
19402679 | 107 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 108 | scm_puts ("#<srcprops ", port); |
19402679 | 109 | SCM_SET_WRITINGP (pstate, 1); |
7862b07e | 110 | scm_iprin1 (scm_srcprops_to_plist (obj), port, pstate); |
19402679 | 111 | SCM_SET_WRITINGP (pstate, writingp); |
b7f3516f | 112 | scm_putc ('>', port); |
575888bd MD |
113 | return 1; |
114 | } | |
115 | ||
1cc91f1b | 116 | |
bc76d628 DH |
117 | int |
118 | scm_c_source_property_breakpoint_p (SCM form) | |
119 | { | |
120 | SCM obj = scm_whash_lookup (scm_source_whash, form); | |
121 | return SRCPROPSP (obj) && SRCPROPBRK (obj); | |
122 | } | |
123 | ||
124 | ||
b0763985 | 125 | /* |
d00a0704 HWN |
126 | * We remember the last file name settings, so we can share that plist |
127 | * entry. This works because scm_set_source_property_x does not use | |
128 | * assoc-set! for modifying the plist. | |
129 | * | |
130 | * This variable contains a protected cons, whose cdr is the cached | |
131 | * plist | |
b0763985 HWN |
132 | */ |
133 | static SCM scm_last_plist_filename; | |
134 | ||
575888bd | 135 | SCM |
1be6b49c | 136 | scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM plist) |
575888bd | 137 | { |
b0763985 | 138 | if (!SCM_UNBNDP (filename)) |
575888bd | 139 | { |
b0763985 HWN |
140 | SCM old_plist = plist; |
141 | ||
142 | /* | |
143 | have to extract the acons, and operate on that, for | |
144 | thread safety. | |
145 | */ | |
146 | SCM last_acons = SCM_CDR (scm_last_plist_filename); | |
147 | if (old_plist == SCM_EOL | |
148 | && SCM_CDAR (last_acons) == filename) | |
149 | { | |
150 | plist = last_acons; | |
151 | } | |
152 | else | |
153 | { | |
154 | plist = scm_acons (scm_sym_filename, filename, plist); | |
155 | if (old_plist == SCM_EOL) | |
156 | SCM_SETCDR (scm_last_plist_filename, plist); | |
157 | } | |
575888bd | 158 | } |
b0763985 HWN |
159 | |
160 | SCM_RETURN_NEWSMOB3 (scm_tc16_srcprops, | |
161 | SRCPROPMAKPOS (line, col), | |
162 | copy, | |
163 | plist); | |
575888bd MD |
164 | } |
165 | ||
1cc91f1b | 166 | |
575888bd | 167 | SCM |
7862b07e | 168 | scm_srcprops_to_plist (SCM obj) |
575888bd MD |
169 | { |
170 | SCM plist = SRCPROPPLIST (obj); | |
171 | if (!SCM_UNBNDP (SRCPROPCOPY (obj))) | |
92e5aa0e | 172 | plist = scm_acons (scm_sym_copy, SRCPROPCOPY (obj), plist); |
e11e83f3 MV |
173 | plist = scm_acons (scm_sym_column, scm_from_int (SRCPROPCOL (obj)), plist); |
174 | plist = scm_acons (scm_sym_line, scm_from_int (SRCPROPLINE (obj)), plist); | |
7888309b | 175 | plist = scm_acons (scm_sym_breakpoint, scm_from_bool (SRCPROPBRK (obj)), plist); |
575888bd MD |
176 | return plist; |
177 | } | |
178 | ||
a1ec6916 | 179 | SCM_DEFINE (scm_source_properties, "source-properties", 1, 0, 0, |
1bbd0b84 | 180 | (SCM obj), |
e3239868 | 181 | "Return the source property association list of @var{obj}.") |
1bbd0b84 | 182 | #define FUNC_NAME s_scm_source_properties |
575888bd MD |
183 | { |
184 | SCM p; | |
34d19ef6 | 185 | SCM_VALIDATE_NIM (1, obj); |
575888bd | 186 | if (SCM_MEMOIZEDP (obj)) |
a4645b97 | 187 | obj = SCM_MEMOIZED_EXP (obj); |
d2e53ed6 | 188 | else if (!scm_is_pair (obj)) |
1bbd0b84 | 189 | SCM_WRONG_TYPE_ARG (1, obj); |
f5003c13 | 190 | p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL); |
230d095f | 191 | if (SRCPROPSP (p)) |
7862b07e | 192 | return scm_srcprops_to_plist (p); |
f5003c13 KR |
193 | else |
194 | /* list from set-source-properties!, or SCM_EOL for not found */ | |
195 | return p; | |
575888bd | 196 | } |
1bbd0b84 | 197 | #undef FUNC_NAME |
575888bd MD |
198 | |
199 | /* Perhaps this procedure should look through an alist | |
200 | and try to make a srcprops-object...? */ | |
a1ec6916 | 201 | SCM_DEFINE (scm_set_source_properties_x, "set-source-properties!", 2, 0, 0, |
1bbd0b84 | 202 | (SCM obj, SCM plist), |
e3239868 DH |
203 | "Install the association list @var{plist} as the source property\n" |
204 | "list for @var{obj}.") | |
1bbd0b84 | 205 | #define FUNC_NAME s_scm_set_source_properties_x |
575888bd MD |
206 | { |
207 | SCM handle; | |
34d19ef6 | 208 | SCM_VALIDATE_NIM (1, obj); |
575888bd | 209 | if (SCM_MEMOIZEDP (obj)) |
a4645b97 | 210 | obj = SCM_MEMOIZED_EXP (obj); |
d2e53ed6 | 211 | else if (!scm_is_pair (obj)) |
1bbd0b84 | 212 | SCM_WRONG_TYPE_ARG(1, obj); |
575888bd MD |
213 | handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist); |
214 | SCM_SETCDR (handle, plist); | |
215 | return plist; | |
216 | } | |
1bbd0b84 | 217 | #undef FUNC_NAME |
575888bd | 218 | |
a1ec6916 | 219 | SCM_DEFINE (scm_source_property, "source-property", 2, 0, 0, |
1bbd0b84 | 220 | (SCM obj, SCM key), |
e3239868 DH |
221 | "Return the source property specified by @var{key} from\n" |
222 | "@var{obj}'s source property list.") | |
1bbd0b84 | 223 | #define FUNC_NAME s_scm_source_property |
575888bd MD |
224 | { |
225 | SCM p; | |
34d19ef6 | 226 | SCM_VALIDATE_NIM (1, obj); |
575888bd | 227 | if (SCM_MEMOIZEDP (obj)) |
a4645b97 | 228 | obj = SCM_MEMOIZED_EXP (obj); |
d2e53ed6 | 229 | else if (!scm_is_pair (obj)) |
1bbd0b84 | 230 | SCM_WRONG_TYPE_ARG (1, obj); |
575888bd | 231 | p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL); |
24933780 | 232 | if (!SRCPROPSP (p)) |
575888bd | 233 | goto plist; |
bc36d050 MV |
234 | if (scm_is_eq (scm_sym_breakpoint, key)) p = scm_from_bool (SRCPROPBRK (p)); |
235 | else if (scm_is_eq (scm_sym_line, key)) p = scm_from_int (SRCPROPLINE (p)); | |
236 | else if (scm_is_eq (scm_sym_column, key)) p = scm_from_int (SRCPROPCOL (p)); | |
bc36d050 | 237 | else if (scm_is_eq (scm_sym_copy, key)) p = SRCPROPCOPY (p); |
575888bd MD |
238 | else |
239 | { | |
240 | p = SRCPROPPLIST (p); | |
241 | plist: | |
242 | p = scm_assoc (key, p); | |
243 | return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F); | |
244 | } | |
245 | return SCM_UNBNDP (p) ? SCM_BOOL_F : p; | |
246 | } | |
1bbd0b84 | 247 | #undef FUNC_NAME |
575888bd | 248 | |
a1ec6916 | 249 | SCM_DEFINE (scm_set_source_property_x, "set-source-property!", 3, 0, 0, |
1bbd0b84 | 250 | (SCM obj, SCM key, SCM datum), |
e3239868 DH |
251 | "Set the source property of object @var{obj}, which is specified by\n" |
252 | "@var{key} to @var{datum}. Normally, the key will be a symbol.") | |
1bbd0b84 | 253 | #define FUNC_NAME s_scm_set_source_property_x |
575888bd MD |
254 | { |
255 | scm_whash_handle h; | |
256 | SCM p; | |
34d19ef6 | 257 | SCM_VALIDATE_NIM (1, obj); |
575888bd | 258 | if (SCM_MEMOIZEDP (obj)) |
a4645b97 | 259 | obj = SCM_MEMOIZED_EXP (obj); |
d2e53ed6 | 260 | else if (!scm_is_pair (obj)) |
1bbd0b84 | 261 | SCM_WRONG_TYPE_ARG (1, obj); |
575888bd MD |
262 | h = scm_whash_get_handle (scm_source_whash, obj); |
263 | if (SCM_WHASHFOUNDP (h)) | |
264 | p = SCM_WHASHREF (scm_source_whash, h); | |
265 | else | |
266 | { | |
267 | h = scm_whash_create_handle (scm_source_whash, obj); | |
268 | p = SCM_EOL; | |
269 | } | |
bc36d050 | 270 | if (scm_is_eq (scm_sym_breakpoint, key)) |
cda139a7 | 271 | { |
62850ef3 DH |
272 | if (SRCPROPSP (p)) |
273 | { | |
7888309b | 274 | if (scm_is_false (datum)) |
62850ef3 DH |
275 | CLEARSRCPROPBRK (p); |
276 | else | |
277 | SETSRCPROPBRK (p); | |
278 | } | |
cda139a7 | 279 | else |
62850ef3 DH |
280 | { |
281 | SCM sp = scm_make_srcprops (0, 0, SCM_UNDEFINED, SCM_UNDEFINED, p); | |
282 | SCM_WHASHSET (scm_source_whash, h, sp); | |
7888309b | 283 | if (scm_is_false (datum)) |
62850ef3 DH |
284 | CLEARSRCPROPBRK (sp); |
285 | else | |
286 | SETSRCPROPBRK (sp); | |
287 | } | |
cda139a7 | 288 | } |
bc36d050 | 289 | else if (scm_is_eq (scm_sym_line, key)) |
575888bd | 290 | { |
0c95b57d | 291 | if (SRCPROPSP (p)) |
a55c2b68 | 292 | SETSRCPROPLINE (p, scm_to_int (datum)); |
575888bd MD |
293 | else |
294 | SCM_WHASHSET (scm_source_whash, h, | |
a55c2b68 | 295 | scm_make_srcprops (scm_to_int (datum), 0, |
a9dbb9fd | 296 | SCM_UNDEFINED, SCM_UNDEFINED, p)); |
575888bd | 297 | } |
bc36d050 | 298 | else if (scm_is_eq (scm_sym_column, key)) |
575888bd | 299 | { |
0c95b57d | 300 | if (SRCPROPSP (p)) |
a55c2b68 | 301 | SETSRCPROPCOL (p, scm_to_int (datum)); |
575888bd MD |
302 | else |
303 | SCM_WHASHSET (scm_source_whash, h, | |
a55c2b68 | 304 | scm_make_srcprops (0, scm_to_int (datum), |
a9dbb9fd | 305 | SCM_UNDEFINED, SCM_UNDEFINED, p)); |
575888bd | 306 | } |
bc36d050 | 307 | else if (scm_is_eq (scm_sym_copy, key)) |
575888bd | 308 | { |
0c95b57d | 309 | if (SRCPROPSP (p)) |
80237dcc | 310 | SETSRCPROPCOPY (p, datum); |
575888bd | 311 | else |
5c5549cb | 312 | SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p)); |
575888bd MD |
313 | } |
314 | else | |
58d233cc NJ |
315 | { |
316 | if (SRCPROPSP (p)) | |
80237dcc | 317 | SETSRCPROPPLIST (p, scm_acons (key, datum, SRCPROPPLIST (p))); |
58d233cc NJ |
318 | else |
319 | SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p)); | |
320 | } | |
575888bd MD |
321 | return SCM_UNSPECIFIED; |
322 | } | |
1bbd0b84 | 323 | #undef FUNC_NAME |
575888bd | 324 | |
1cc91f1b | 325 | |
575888bd MD |
326 | void |
327 | scm_init_srcprop () | |
575888bd | 328 | { |
e841c3e0 KN |
329 | scm_tc16_srcprops = scm_make_smob_type ("srcprops", 0); |
330 | scm_set_smob_mark (scm_tc16_srcprops, srcprops_mark); | |
e841c3e0 KN |
331 | scm_set_smob_print (scm_tc16_srcprops, srcprops_print); |
332 | ||
e11e83f3 | 333 | scm_source_whash = scm_make_weak_key_hash_table (scm_from_int (2047)); |
86d31dfe | 334 | scm_c_define ("source-whash", scm_source_whash); |
85db4a2c | 335 | |
b0763985 HWN |
336 | scm_last_plist_filename |
337 | = scm_permanent_object (scm_cons (SCM_EOL, | |
338 | scm_acons (SCM_EOL, SCM_EOL, SCM_EOL))); | |
339 | ||
a0599745 | 340 | #include "libguile/srcprop.x" |
575888bd MD |
341 | } |
342 | ||
89e00824 ML |
343 | |
344 | /* | |
345 | Local Variables: | |
346 | c-file-style: "gnu" | |
347 | End: | |
348 | */ |