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
|
/* xlprint - xlisp print routine */
/* Copyright (c) 1985, by David Michael Betz
All Rights Reserved
Permission is granted for unrestricted non-commercial use
* HISTORY
* 28-Apr-03 Mazzoni
* Eliminated some compiler warnings
*
* 3-Apr-88 Dale Amon at CMU-CSD
* Added extern support to xlisp 2.0
*
* 18-Oct-87 Dale Amon at CMU-CSD
* Added print support for EXTERN nodes
*/
#include "string.h"
#include "xlisp.h"
/* external variables */
extern LVAL s_printcase,k_downcase,k_const,k_nmacro;
extern LVAL s_ifmt,s_ffmt;
extern FUNDEF funtab[];
extern char buf[];
LOCAL void putsymbol(LVAL fptr, char *str, int escflag);
LOCAL void putsubr(LVAL fptr, const char *tag, LVAL val);
LOCAL void putfixnum(LVAL fptr, FIXTYPE n);
LOCAL void putflonum(LVAL fptr, FLOTYPE n);
LOCAL void putchcode(LVAL fptr, int ch, int escflag);
LOCAL void putstring(LVAL fptr, LVAL str);
LOCAL void putqstring(LVAL fptr, LVAL str);
LOCAL void putclosure(LVAL fptr, LVAL val);
LOCAL void putoct(LVAL fptr, int n);
/* xlprint - print an xlisp value */
void xlprint(LVAL fptr, LVAL vptr, int flag)
{
LVAL nptr,next;
int n,i;
/* print nil */
if (vptr == NIL) {
putsymbol(fptr,"NIL",flag);
return;
}
/* check value type */
switch (ntype(vptr)) {
case SUBR:
putsubr(fptr,"Subr",vptr);
break;
case FSUBR:
putsubr(fptr,"FSubr",vptr);
break;
case CONS:
xlputc(fptr,'(');
for (nptr = vptr; nptr != NIL; nptr = next) {
xlprint(fptr,car(nptr),flag);
if ((next = cdr(nptr))) {
if (consp(next))
xlputc(fptr,' ');
else {
xlputstr(fptr," . ");
xlprint(fptr,next,flag);
break;
}
}
}
xlputc(fptr,')');
break;
case SYMBOL:
putsymbol(fptr,(char *) getstring(getpname(vptr)),flag);
break;
case FIXNUM:
putfixnum(fptr,getfixnum(vptr));
break;
case FLONUM:
putflonum(fptr,getflonum(vptr));
break;
case CHAR:
putchcode(fptr,getchcode(vptr),flag);
break;
case STRING:
if (flag)
putqstring(fptr,vptr);
else
putstring(fptr,vptr);
break;
case STREAM:
putatm(fptr,"File-Stream",vptr);
break;
case USTREAM:
putatm(fptr,"Unnamed-Stream",vptr);
break;
case OBJECT:
putatm(fptr,"Object",vptr);
break;
case VECTOR:
xlputc(fptr,'#'); xlputc(fptr,'(');
for (i = 0, n = getsize(vptr); n-- > 0; ) {
xlprint(fptr,getelement(vptr,i++),flag);
if (n) xlputc(fptr,' ');
}
xlputc(fptr,')');
break;
case CLOSURE:
putclosure(fptr,vptr);
break;
case EXTERN:
if (getdesc(vptr)) {
(*(getdesc(vptr)->print_meth))(fptr, getinst(vptr));
}
break;
case FREE_NODE:
putatm(fptr,"Free",vptr);
break;
default:
putatm(fptr,"Foo",vptr);
break;
}
}
/* xlterpri - terminate the current print line */
void xlterpri(LVAL fptr)
{
xlputc(fptr,'\n');
}
/* xlputstr - output a string */
void xlputstr(LVAL fptr, const char *str)
{
while (*str)
xlputc(fptr,*str++);
}
/* putsymbol - output a symbol */
LOCAL void putsymbol(LVAL fptr, char *str, int escflag)
{
int downcase;
LVAL type;
char *p;
/* check for printing without escapes */
if (!escflag) {
xlputstr(fptr,str);
return;
}
/* check to see if symbol needs escape characters */
if (tentry(*str) == k_const) {
for (p = str; *p; ++p)
if (islower(*p)
|| ((type = tentry(*p)) != k_const
&& (!consp(type) || car(type) != k_nmacro))) {
xlputc(fptr,'|');
while (*str) {
if (*str == '\\' || *str == '|')
xlputc(fptr,'\\');
xlputc(fptr,*str++);
}
xlputc(fptr,'|');
return;
}
}
/* get the case translation flag */
downcase = (getvalue(s_printcase) == k_downcase);
/* check for the first character being '#' */
if (*str == '#' || *str == '.' || xlisnumber(str,NULL))
xlputc(fptr,'\\');
/* output each character */
while (*str) {
/* don't escape colon until we add support for packages */
if (*str == '\\' || *str == '|' /* || *str == ':' */)
xlputc(fptr,'\\');
xlputc(fptr,(downcase && isupper(*str) ? tolower(*str++) : *str++));
}
}
/* putstring - output a string */
LOCAL void putstring(LVAL fptr, LVAL str)
{
unsigned char *p;
int ch;
/* output each character */
for (p = getstring(str); (ch = *p) != '\0'; ++p)
xlputc(fptr,ch);
}
/* putqstring - output a quoted string */
LOCAL void putqstring(LVAL fptr, LVAL str)
{
unsigned char *p;
int ch;
/* get the string pointer */
p = getstring(str);
/* output the initial quote */
xlputc(fptr,'"');
/* output each character in the string */
for (p = getstring(str); (ch = *p) != '\0'; ++p)
/* check for a control character */
if (ch < 040 || ch == '\\' || ch > 0176) {
xlputc(fptr,'\\');
switch (ch) {
case '\011':
xlputc(fptr,'t');
break;
case '\012':
xlputc(fptr,'n');
break;
case '\014':
xlputc(fptr,'f');
break;
case '\015':
xlputc(fptr,'r');
break;
case '\\':
xlputc(fptr,'\\');
break;
default:
putoct(fptr,ch);
break;
}
}
/* output a normal character */
else
xlputc(fptr,ch);
/* output the terminating quote */
xlputc(fptr,'"');
}
/* putatm - output an atom */
void putatm(LVAL fptr, const char *tag, LVAL val)
{
sprintf(buf,"#<%s: #",tag); xlputstr(fptr,buf);
sprintf(buf,AFMT,(long unsigned int)val); xlputstr(fptr,buf);
xlputc(fptr,'>');
}
/* putsubr - output a subr/fsubr */
LOCAL void putsubr(LVAL fptr, const char *tag, LVAL val)
{
sprintf(buf,"#<%s-%s: #",tag,funtab[getoffset(val)].fd_name);
xlputstr(fptr,buf);
sprintf(buf,AFMT,(long unsigned int)val); xlputstr(fptr,buf);
xlputc(fptr,'>');
}
/* putclosure - output a closure */
LOCAL void putclosure(LVAL fptr, LVAL val)
{
LVAL name;
if ((name = getname(val)))
sprintf(buf,"#<Closure-%s: #",getstring(getpname(name)));
else
strcpy(buf,"#<Closure: #");
xlputstr(fptr,buf);
sprintf(buf,AFMT,(long unsigned int)val); xlputstr(fptr,buf);
xlputc(fptr,'>');
/*
xlputstr(fptr,"\nName: "); xlprint(fptr,getname(val),TRUE);
xlputstr(fptr,"\nType: "); xlprint(fptr,gettype(val),TRUE);
xlputstr(fptr,"\nLambda: "); xlprint(fptr,getlambda(val),TRUE);
xlputstr(fptr,"\nArgs: "); xlprint(fptr,getargs(val),TRUE);
xlputstr(fptr,"\nOargs: "); xlprint(fptr,getoargs(val),TRUE);
xlputstr(fptr,"\nRest: "); xlprint(fptr,getrest(val),TRUE);
xlputstr(fptr,"\nKargs: "); xlprint(fptr,getkargs(val),TRUE);
xlputstr(fptr,"\nAargs: "); xlprint(fptr,getaargs(val),TRUE);
xlputstr(fptr,"\nBody: "); xlprint(fptr,getbody(val),TRUE);
xlputstr(fptr,"\nEnv: "); xlprint(fptr,closure_getenv(val),TRUE);
xlputstr(fptr,"\nFenv: "); xlprint(fptr,getfenv(val),TRUE);
*/
}
/* putfixnum - output a fixnum */
LOCAL void putfixnum(LVAL fptr, FIXTYPE n)
{
unsigned char *fmt;
LVAL val;
fmt = ((val = getvalue(s_ifmt)) && stringp(val) ? getstring(val)
: (unsigned char *)IFMT);
sprintf(buf, (char *) fmt,n);
xlputstr(fptr,buf);
}
/* putflonum - output a flonum */
LOCAL void putflonum(LVAL fptr, FLOTYPE n)
{
unsigned char *fmt;
LVAL val;
fmt = ((val = getvalue(s_ffmt)) && stringp(val) ? getstring(val)
: (unsigned char *)"%g");
sprintf(buf,(char *) fmt,n);
xlputstr(fptr,buf);
}
/* putchcode - output a character */
LOCAL void putchcode(LVAL fptr, int ch, int escflag)
{
if (escflag) {
switch (ch) {
case '\n':
xlputstr(fptr,"#\\Newline");
break;
case ' ':
xlputstr(fptr,"#\\Space");
break;
case '\t':
xlputstr(fptr, "#\\Tab");
break;
default:
sprintf(buf,"#\\%c",ch);
xlputstr(fptr,buf);
break;
}
}
else
xlputc(fptr,ch);
}
/* putoct - output an octal byte value */
LOCAL void putoct(LVAL fptr, int n)
{
sprintf(buf,"%03o",n);
xlputstr(fptr,buf);
}
|
