1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
|
/* Copyright (C) 1995,1996 Mikael Djurfeldt
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
* The author can be reached at djurfeldt@nada.kth.se
* Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN
*/
#include <stdio.h>
#include "_scm.h"
#include "smob.h"
#include "alist.h"
#include "debug.h"
#include "hashtab.h"
#include "weaks.h"
#include "srcprop.h"
/* {Source Properties}
*
* Properties of source list expressions.
* Five of these have special meaning and optimized storage:
*
* filename string The name of the source file.
* copy list A copy of the list expression.
* line integer The source code line number.
* column integer The source code column number.
* breakpoint boolean Sets a breakpoint on this form.
*
* Most properties above can be set by the reader.
*
*/
SCM scm_i_copy;
static SCM scm_i_breakpoint, scm_i_line, scm_i_column;
static SCM scm_i_filename;
long tc16_srcprops;
static scm_srcprops_chunk *srcprops_chunklist = 0;
static scm_srcprops *srcprops_freelist = 0;
#ifdef __STDC__
static SCM
marksrcprops (SCM obj)
#else
static SCM
marksrcprops (obj)
SCM obj;
#endif
{
SCM_SETGC8MARK (obj);
scm_gc_mark (SRCPROPFNAME (obj));
scm_gc_mark (SRCPROPCOPY (obj));
return SRCPROPPLIST (obj);
}
#ifdef __STDC__
static scm_sizet
freesrcprops (SCM obj)
#else
static scm_sizet
freesrcprops (obj)
SCM obj;
#endif
{
*((scm_srcprops **) SCM_CDR (obj)) = srcprops_freelist;
srcprops_freelist = (scm_srcprops *) SCM_CDR (obj);
return 0; /* srcprops_chunks are not freed until leaving guile */
}
#ifdef __STDC__
static int
prinsrcprops (SCM obj, SCM port, int writing)
#else
static int
prinsrcprops (obj, port, writing)
SCM obj;
SCM port;
int writing;
#endif
{
scm_gen_puts (scm_regular_string, "#<srcprops ", port);
scm_iprin1 (scm_srcprops_to_plist (obj), port, 1);
scm_gen_putc ('>', port);
return 1;
}
static scm_smobfuns srcpropssmob =
{marksrcprops, freesrcprops, prinsrcprops, 0};
#ifdef __STDC__
SCM
_scm_make_srcprops (int line, int col, SCM filename, SCM copy, SCM plist)
#else
SCM
_scm_make_srcprops (line, col, filename, copy, plist)
int line;
int col;
SCM filename;
SCM copy;
SCM plist;
#endif
{
register SCM ans;
register scm_srcprops *ptr;
SCM_DEFER_INTS;
if ((ptr = srcprops_freelist) != NULL)
srcprops_freelist = *(scm_srcprops **)ptr;
else
{
int i;
scm_srcprops_chunk *mem;
scm_sizet n = sizeof (scm_srcprops_chunk)
+ sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
SCM_SYSCALL (mem = (scm_srcprops_chunk *) malloc (n));
SCM_ASSERT (mem, SCM_UNDEFINED, SCM_NALLOC, "srcprops");
scm_mallocated += n;
mem->next = srcprops_chunklist;
srcprops_chunklist = mem;
ptr = &mem->srcprops[0];
for (i = 1; i < SRCPROPS_CHUNKSIZE - 1; ++i)
*(scm_srcprops **)&ptr[i] = &ptr[i + 1];
*(scm_srcprops **)&ptr[SRCPROPS_CHUNKSIZE - 1] = 0;
srcprops_freelist = (scm_srcprops *) &ptr[1];
}
SCM_NEWCELL (ans);
SCM_CAR (ans) = tc16_srcprops;
ptr->pos = SRCPROPMAKPOS (line, col);
ptr->fname = filename;
ptr->copy = copy;
ptr->plist = plist;
SCM_CDR (ans) = (SCM) ptr;
SCM_ALLOW_INTS;
return ans;
}
#ifdef __STDC__
SCM
scm_srcprops_to_plist (SCM obj)
#else
SCM
scm_srcprops_to_plist (obj)
SCM obj;
#endif
{
SCM plist = SRCPROPPLIST (obj);
if (!SCM_UNBNDP (SRCPROPCOPY (obj)))
plist = scm_acons (scm_i_copy, SRCPROPCOPY (obj), plist);
if (!SCM_UNBNDP (SRCPROPFNAME (obj)))
plist = scm_acons (scm_i_filename, SRCPROPFNAME (obj), plist);
plist = scm_acons (scm_i_column, SCM_MAKINUM (SRCPROPCOL (obj)), plist);
plist = scm_acons (scm_i_line, SCM_MAKINUM (SRCPROPLINE (obj)), plist);
plist = scm_acons (scm_i_breakpoint, SRCPROPBRK (obj), plist);
return plist;
}
SCM_PROC (s_source_properties, "source-properties", 1, 0, 0, scm_source_properties);
#ifdef __STDC__
SCM
scm_source_properties (SCM obj)
#else
SCM
scm_source_properties (obj)
SCM obj;
#endif
{
SCM p;
if (SCM_MEMOIZEDP (obj))
obj = SCM_MEMOEXP (obj);
p = scm_hashq_ref (scm_source_whash, obj, (SCM) NULL);
if (p != (SCM) NULL && SRCPROPSP (p))
return scm_srcprops_to_plist (p);
return SCM_EOL;
}
/* Perhaps this procedure should look through an alist
and try to make a srcprops-object...? */
SCM_PROC (s_set_source_properties_x, "set-source-properties!", 2, 0, 0, scm_set_source_properties_x);
#ifdef __STDC__
SCM
scm_set_source_properties_x (SCM obj, SCM plist)
#else
SCM
scm_set_source_properties_x (obj, plist)
SCM obj;
SCM plist;
#endif
{
SCM handle;
if (SCM_MEMOIZEDP (obj))
obj = SCM_MEMOEXP (obj);
handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist);
SCM_SETCDR (handle, plist);
return plist;
}
SCM_PROC (s_source_property, "source-property", 2, 0, 0, scm_source_property);
#ifdef __STDC__
SCM
scm_source_property (SCM obj, SCM key)
#else
SCM
scm_source_property (obj, key)
SCM obj;
SCM key;
#endif
{
SCM p;
if (SCM_MEMOIZEDP (obj))
obj = SCM_MEMOEXP (obj);
p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
if (SCM_IMP (p) || !SRCPROPSP (p))
goto plist;
if (scm_i_breakpoint == key) p = SRCPROPBRK (p);
else if (scm_i_line == key) p = SCM_MAKINUM (SRCPROPLINE (p));
else if (scm_i_column == key) p = SCM_MAKINUM (SRCPROPCOL (p));
else if (scm_i_filename == key) p = SRCPROPFNAME (p);
else if (scm_i_copy == key) p = SRCPROPCOPY (p);
else
{
p = SRCPROPPLIST (p);
plist:
p = scm_assoc (key, p);
return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F);
}
return SCM_UNBNDP (p) ? SCM_BOOL_F : p;
}
SCM_PROC (s_set_source_property_x, "set-source-property!", 3, 0, 0, scm_set_source_property_x);
#ifdef __STDC__
SCM
scm_set_source_property_x (SCM obj, SCM key, SCM datum)
#else
SCM
scm_set_source_property_x (obj, key, datum)
SCM obj;
SCM key;
SCM datum;
#endif
{
scm_whash_handle h;
SCM p;
if (SCM_MEMOIZEDP (obj))
obj = SCM_MEMOEXP (obj);
h = scm_whash_get_handle (scm_source_whash, obj);
if (SCM_WHASHFOUNDP (h))
p = SCM_WHASHREF (scm_source_whash, h);
else
{
h = scm_whash_create_handle (scm_source_whash, obj);
p = SCM_EOL;
}
if (scm_i_breakpoint == key)
if (SCM_FALSEP (datum))
CLEARSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
? p
: SCM_WHASHSET (scm_source_whash, h,
_scm_make_srcprops (0, 0, SCM_UNDEFINED,
SCM_UNDEFINED, p)));
else
SETSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
? p
: SCM_WHASHSET (scm_source_whash, h,
_scm_make_srcprops (0, 0, SCM_UNDEFINED,
SCM_UNDEFINED, p)));
else if (scm_i_line == key)
{
if (SCM_NIMP (p) && SRCPROPSP (p))
SETSRCPROPLINE (p, datum);
else
SCM_WHASHSET (scm_source_whash, h,
_scm_make_srcprops (datum, 0, SCM_UNDEFINED, SCM_UNDEFINED, p));
}
else if (scm_i_column == key)
{
if (SCM_NIMP (p) && SRCPROPSP (p))
SETSRCPROPCOL (p, datum);
else
SCM_WHASHSET (scm_source_whash, h,
_scm_make_srcprops (0, datum, SCM_UNDEFINED, SCM_UNDEFINED, p));
}
else if (scm_i_filename == key)
{
if (SCM_NIMP (p) && SRCPROPSP (p))
SRCPROPFNAME (p) = datum;
else
SCM_WHASHSET (scm_source_whash, h, _scm_make_srcprops (0, 0, datum, SCM_UNDEFINED, p));
}
else if (scm_i_filename == key)
{
if (SCM_NIMP (p) && SRCPROPSP (p))
SRCPROPCOPY (p) = datum;
else
SCM_WHASHSET (scm_source_whash, h, _scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p));
}
else
SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p));
return SCM_UNSPECIFIED;
}
#ifdef __STDC__
void
scm_init_srcprop (void)
#else
void
scm_init_srcprop ()
#endif
{
tc16_srcprops = scm_newsmob (&srcpropssmob);
scm_source_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (255));
scm_i_filename = SCM_CAR (scm_sysintern ("filename", SCM_UNDEFINED));
scm_i_copy = SCM_CAR (scm_sysintern ("copy", SCM_UNDEFINED));
scm_i_line = SCM_CAR (scm_sysintern ("line", SCM_UNDEFINED));
scm_i_column = SCM_CAR (scm_sysintern ("column", SCM_UNDEFINED));
scm_i_breakpoint = SCM_CAR (scm_sysintern ("breakpoint", SCM_UNDEFINED));
scm_sysintern ("source-whash", scm_source_whash);
#include "srcprop.x"
}
void
scm_finish_srcprop ()
{
register scm_srcprops_chunk *ptr = srcprops_chunklist, *next;
while (ptr)
{
next = ptr->next;
free ((char *) ptr);
scm_mallocated -= sizeof (scm_srcprops_chunk)
+ sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
}
}
|