1 |
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/* -*- coding: utf-8; -*- */ |
2 |
/* |
/* |
3 |
stack - an interactive interpreter for a stack-based language |
stack - an interactive interpreter for a stack-based language |
4 |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn |
21 |
Teddy Hogeborn <teddy@fukt.bth.se> |
Teddy Hogeborn <teddy@fukt.bth.se> |
22 |
*/ |
*/ |
23 |
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|
24 |
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#define CAR(X) ((X)->content.c->car) |
25 |
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#define CDR(X) ((X)->content.c->cdr) |
26 |
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|
27 |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
28 |
#include <stdio.h> |
#include <stdio.h> |
29 |
/* exit, EXIT_SUCCESS, malloc, free */ |
/* exit, EXIT_SUCCESS, malloc, free */ |
38 |
#include <unistd.h> |
#include <unistd.h> |
39 |
/* EX_NOINPUT, EX_USAGE */ |
/* EX_NOINPUT, EX_USAGE */ |
40 |
#include <sysexits.h> |
#include <sysexits.h> |
41 |
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/* assert */ |
42 |
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#include <assert.h> |
43 |
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44 |
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#ifdef __linux__ |
45 |
/* mtrace, muntrace */ |
/* mtrace, muntrace */ |
46 |
#include <mcheck.h> |
#include <mcheck.h> |
47 |
/* ioctl */ |
/* ioctl */ |
48 |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
49 |
/* KDMKTONE */ |
/* KDMKTONE */ |
50 |
#include <linux/kd.h> |
#include <linux/kd.h> |
51 |
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#endif /* __linux__ */ |
52 |
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|
53 |
#include "stack.h" |
#include "stack.h" |
54 |
|
|
61 |
env->gc_count= 0; |
env->gc_count= 0; |
62 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
63 |
|
|
64 |
env->head= NULL; |
env->head= new_val(env); |
65 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
66 |
env->symbols[i]= NULL; |
env->symbols[i]= NULL; |
67 |
env->err= 0; |
env->err= 0; |
79 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
80 |
extern void toss(environment *env) |
extern void toss(environment *env) |
81 |
{ |
{ |
82 |
stackitem *temp= env->head; |
if(env->head->type==empty) { |
|
|
|
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if((env->head)==NULL) { |
|
83 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
84 |
env->err= 1; |
env->err= 1; |
85 |
return; |
return; |
86 |
} |
} |
87 |
|
|
88 |
env->head= env->head->next; /* Remove the top stack item */ |
env->head= CDR(env->head); /* Remove the top stack item */ |
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free(temp); /* Free the old top stack item */ |
|
89 |
} |
} |
90 |
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|
91 |
/* Returns a pointer to a pointer to an element in the hash table. */ |
/* Returns a pointer to a pointer to an element in the hash table. */ |
124 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
125 |
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|
126 |
nval->content.ptr= NULL; |
nval->content.ptr= NULL; |
127 |
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nval->type= empty; |
128 |
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|
129 |
nitem->item= nval; |
nitem->item= nval; |
130 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
131 |
|
|
132 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
133 |
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|
134 |
env->gc_count += sizeof(value); |
env->gc_count += sizeof(value); |
142 |
Marked values are not collected by the GC. */ |
Marked values are not collected by the GC. */ |
143 |
inline void gc_mark(value *val) |
inline void gc_mark(value *val) |
144 |
{ |
{ |
145 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.mark) |
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if(val->gc.flag.mark) |
|
146 |
return; |
return; |
147 |
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|
148 |
val->gc.flag.mark= 1; |
val->gc.flag.mark= 1; |
149 |
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|
150 |
if(val->type==list) { |
if(val->type==tcons) { |
151 |
iterator= val->content.ptr; |
gc_mark(CAR(val)); |
152 |
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gc_mark(CDR(val)); |
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while(iterator!=NULL) { |
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gc_mark(iterator->item); |
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iterator= iterator->next; |
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} |
|
153 |
} |
} |
154 |
} |
} |
155 |
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|
164 |
/* Start GC */ |
/* Start GC */ |
165 |
extern void gc_init(environment *env) |
extern void gc_init(environment *env) |
166 |
{ |
{ |
167 |
stackitem *new_head= NULL, *titem, *iterator; |
stackitem *new_head= NULL, *titem; |
168 |
symbol *tsymb; |
symbol *tsymb; |
169 |
int i; |
int i; |
170 |
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|
171 |
if(env->interactive){ |
if(env->interactive) |
172 |
printf("Garbage collecting."); |
printf("Garbage collecting."); |
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} |
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173 |
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|
174 |
/* Mark values on stack */ |
/* Mark values on stack */ |
175 |
iterator= env->head; |
gc_mark(env->head); |
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while(iterator!=NULL) { |
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gc_mark(iterator->item); |
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iterator= iterator->next; |
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} |
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176 |
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|
177 |
if(env->interactive){ |
if(env->interactive) |
178 |
printf("."); |
printf("."); |
179 |
} |
|
180 |
|
|
181 |
/* Mark values in hashtable */ |
/* Mark values in hashtable */ |
182 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) |
183 |
tsymb= env->symbols[i]; |
for(tsymb= env->symbols[i]; tsymb!=NULL; tsymb= tsymb->next) |
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while(tsymb!=NULL) { |
|
184 |
if (tsymb->val != NULL) |
if (tsymb->val != NULL) |
185 |
gc_mark(tsymb->val); |
gc_mark(tsymb->val); |
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tsymb= tsymb->next; |
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} |
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} |
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186 |
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|
187 |
if(env->interactive){ |
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188 |
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if(env->interactive) |
189 |
printf("."); |
printf("."); |
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} |
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190 |
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191 |
env->gc_count= 0; |
env->gc_count= 0; |
192 |
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194 |
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195 |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
196 |
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|
197 |
switch(env->gc_ref->item->type) { /* Remove content */ |
/* Remove content */ |
198 |
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switch(env->gc_ref->item->type){ |
199 |
case string: |
case string: |
200 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
201 |
break; |
break; |
202 |
case list: |
case tcons: |
203 |
while(env->gc_ref->item->content.ptr!=NULL) { |
free(env->gc_ref->item->content.c); |
204 |
titem= env->gc_ref->item->content.ptr; |
break; |
205 |
env->gc_ref->item->content.ptr= titem->next; |
case empty: |
206 |
free(titem); |
case integer: |
207 |
} |
case tfloat: |
208 |
default: |
case func: |
209 |
|
case symb: |
210 |
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/* Symbol strings are freed when walking the hash table */ |
211 |
} |
} |
212 |
|
|
213 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
214 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
215 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
216 |
env->gc_ref= titem; |
env->gc_ref= titem; |
217 |
continue; |
continue; |
|
} else { |
|
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env->gc_count += sizeof(value); |
|
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if(env->gc_ref->item->type == string) |
|
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env->gc_count += strlen(env->gc_ref->item->content.ptr); |
|
218 |
} |
} |
219 |
|
#ifdef DEBUG |
220 |
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printf("Kept value (%p)", env->gc_ref->item); |
221 |
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if(env->gc_ref->item->gc.flag.mark) |
222 |
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printf(" (marked)"); |
223 |
|
if(env->gc_ref->item->gc.flag.protect) |
224 |
|
printf(" (protected)"); |
225 |
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switch(env->gc_ref->item->type){ |
226 |
|
case integer: |
227 |
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printf(" integer: %d", env->gc_ref->item->content.i); |
228 |
|
break; |
229 |
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case func: |
230 |
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printf(" func: %p", env->gc_ref->item->content.ptr); |
231 |
|
break; |
232 |
|
case symb: |
233 |
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printf(" symb: %s", env->gc_ref->item->content.sym->id); |
234 |
|
break; |
235 |
|
case tcons: |
236 |
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printf(" tcons: %p\t%p", env->gc_ref->item->content.c->car, |
237 |
|
env->gc_ref->item->content.c->cdr); |
238 |
|
break; |
239 |
|
default: |
240 |
|
printf(" <unknown %d>", (env->gc_ref->item->type)); |
241 |
|
} |
242 |
|
printf("\n"); |
243 |
|
#endif /* DEBUG */ |
244 |
|
|
245 |
|
/* Keep values */ |
246 |
|
env->gc_count += sizeof(value); |
247 |
|
if(env->gc_ref->item->type==string) |
248 |
|
env->gc_count += strlen(env->gc_ref->item->content.ptr)+1; |
249 |
|
|
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/* Keep values */ |
|
250 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
251 |
env->gc_ref->next= new_head; |
env->gc_ref->next= new_head; |
252 |
new_head= env->gc_ref; |
new_head= env->gc_ref; |
259 |
|
|
260 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
261 |
|
|
262 |
if(env->interactive){ |
if(env->interactive) |
263 |
printf("done\n"); |
printf("done (%d bytes still allocated)\n", env->gc_count); |
|
} |
|
264 |
|
|
265 |
} |
} |
266 |
|
|
267 |
/* Protect values from GC */ |
/* Protect values from GC */ |
268 |
void protect(value *val) |
void protect(value *val) |
269 |
{ |
{ |
270 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.protect) |
|
|
|
|
if(val->gc.flag.protect) |
|
271 |
return; |
return; |
272 |
|
|
273 |
val->gc.flag.protect= 1; |
val->gc.flag.protect= 1; |
274 |
|
|
275 |
if(val->type==list) { |
if(val->type==tcons) { |
276 |
iterator= val->content.ptr; |
protect(CAR(val)); |
277 |
|
protect(CDR(val)); |
|
while(iterator!=NULL) { |
|
|
protect(iterator->item); |
|
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iterator= iterator->next; |
|
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} |
|
278 |
} |
} |
279 |
} |
} |
280 |
|
|
281 |
/* Unprotect values from GC */ |
/* Unprotect values from GC */ |
282 |
void unprotect(value *val) |
void unprotect(value *val) |
283 |
{ |
{ |
284 |
stackitem *iterator; |
if(val==NULL || !(val->gc.flag.protect)) |
|
|
|
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if(!(val->gc.flag.protect)) |
|
285 |
return; |
return; |
286 |
|
|
287 |
val->gc.flag.protect= 0; |
val->gc.flag.protect= 0; |
288 |
|
|
289 |
if(val->type==list) { |
if(val->type==tcons) { |
290 |
iterator= val->content.ptr; |
unprotect(CAR(val)); |
291 |
|
unprotect(CDR(val)); |
|
while(iterator!=NULL) { |
|
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unprotect(iterator->item); |
|
|
iterator= iterator->next; |
|
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} |
|
292 |
} |
} |
293 |
} |
} |
294 |
|
|
295 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
296 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
297 |
{ |
{ |
298 |
stackitem *new_item= malloc(sizeof(stackitem)); |
value *new_value= new_val(env); |
299 |
new_item->item= val; |
|
300 |
new_item->next= env->head; |
new_value->content.c= malloc(sizeof(pair)); |
301 |
env->head= new_item; |
assert(new_value->content.c!=NULL); |
302 |
|
env->gc_count += sizeof(pair); |
303 |
|
new_value->type= tcons; |
304 |
|
CAR(new_value)= val; |
305 |
|
CDR(new_value)= env->head; |
306 |
|
env->head= new_value; |
307 |
} |
} |
308 |
|
|
309 |
/* Push an integer onto the stack */ |
/* Push an integer onto the stack */ |
366 |
{ |
{ |
367 |
char *new_string; |
char *new_string; |
368 |
|
|
369 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
370 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
371 |
env->err= 1; |
env->err= 1; |
372 |
return; |
return; |
373 |
} |
} |
374 |
|
|
375 |
if(env->head->item->type!=string) { |
if(CAR(env->head)->type!=string) { |
376 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
377 |
env->err= 2; |
env->err= 2; |
378 |
return; |
return; |
379 |
} |
} |
380 |
|
|
381 |
new_string= mangle_str((const char *)(env->head->item->content.ptr)); |
new_string= |
382 |
|
mangle_str((const char *)(CAR(env->head)->content.ptr)); |
383 |
|
|
384 |
toss(env); |
toss(env); |
385 |
if(env->err) return; |
if(env->err) return; |
463 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
464 |
extern void type(environment *env) |
extern void type(environment *env) |
465 |
{ |
{ |
466 |
int typenum; |
if(env->head->type==empty) { |
|
|
|
|
if((env->head)==NULL) { |
|
467 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
468 |
env->err=1; |
env->err= 1; |
469 |
return; |
return; |
470 |
} |
} |
471 |
typenum=env->head->item->type; |
|
472 |
toss(env); |
switch(CAR(env->head)->type){ |
473 |
switch(typenum){ |
case empty: |
474 |
|
push_sym(env, "empty"); |
475 |
|
break; |
476 |
case integer: |
case integer: |
477 |
push_sym(env, "integer"); |
push_sym(env, "integer"); |
478 |
break; |
break; |
488 |
case func: |
case func: |
489 |
push_sym(env, "function"); |
push_sym(env, "function"); |
490 |
break; |
break; |
491 |
case list: |
case tcons: |
492 |
push_sym(env, "list"); |
push_sym(env, "pair"); |
493 |
break; |
break; |
494 |
} |
} |
495 |
|
swap(env); |
496 |
|
if (env->err) return; |
497 |
|
toss(env); |
498 |
} |
} |
499 |
|
|
500 |
/* Prints the top element of the stack. */ |
/* Print a value */ |
501 |
void print_h(stackitem *stack_head, int noquote) |
void print_val(value *val, int noquote, stackitem *stack) |
502 |
{ |
{ |
503 |
switch(stack_head->item->type) { |
stackitem *titem, *tstack; |
504 |
|
int depth; |
505 |
|
|
506 |
|
switch(val->type) { |
507 |
|
case empty: |
508 |
|
printf("[]"); |
509 |
|
break; |
510 |
case integer: |
case integer: |
511 |
printf("%d", stack_head->item->content.i); |
printf("%d", val->content.i); |
512 |
break; |
break; |
513 |
case tfloat: |
case tfloat: |
514 |
printf("%f", stack_head->item->content.f); |
printf("%f", val->content.f); |
515 |
break; |
break; |
516 |
case string: |
case string: |
517 |
if(noquote) |
if(noquote) |
518 |
printf("%s", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)(val->content.ptr)); |
519 |
else |
else |
520 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("\"%s\"", (char*)(val->content.ptr)); |
521 |
break; |
break; |
522 |
case symb: |
case symb: |
523 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", val->content.sym->id); |
524 |
break; |
break; |
525 |
case func: |
case func: |
526 |
printf("#<function %p>", (funcp)(stack_head->item->content.ptr)); |
printf("#<function %p>", (funcp)(val->content.ptr)); |
527 |
break; |
break; |
528 |
case list: |
case tcons: |
|
/* A list is just a stack, so make stack_head point to it */ |
|
|
stack_head=(stackitem *)(stack_head->item->content.ptr); |
|
529 |
printf("[ "); |
printf("[ "); |
530 |
while(stack_head != NULL) { |
tstack= stack; |
531 |
print_h(stack_head, noquote); |
do { |
532 |
printf(" "); |
titem=malloc(sizeof(stackitem)); |
533 |
stack_head=stack_head->next; |
titem->item=val; |
534 |
|
titem->next=tstack; |
535 |
|
tstack=titem; /* Put it on the stack */ |
536 |
|
/* Search a stack of values being printed to see if we are already |
537 |
|
printing this value */ |
538 |
|
titem=tstack; |
539 |
|
depth=0; |
540 |
|
while(titem != NULL && titem->item != CAR(val)){ |
541 |
|
titem=titem->next; |
542 |
|
depth++; |
543 |
|
} |
544 |
|
if(titem != NULL){ /* If we found it on the stack, */ |
545 |
|
printf("#%d#", depth); /* print a depth reference */ |
546 |
|
} else { |
547 |
|
print_val(CAR(val), noquote, tstack); |
548 |
|
} |
549 |
|
val= CDR(val); |
550 |
|
switch(val->type){ |
551 |
|
case empty: |
552 |
|
break; |
553 |
|
case tcons: |
554 |
|
/* Search a stack of values being printed to see if we are already |
555 |
|
printing this value */ |
556 |
|
titem=tstack; |
557 |
|
depth=0; |
558 |
|
while(titem != NULL && titem->item != val){ |
559 |
|
titem=titem->next; |
560 |
|
depth++; |
561 |
|
} |
562 |
|
if(titem != NULL){ /* If we found it on the stack, */ |
563 |
|
printf(" . #%d#", depth); /* print a depth reference */ |
564 |
|
} else { |
565 |
|
printf(" "); |
566 |
|
} |
567 |
|
break; |
568 |
|
default: |
569 |
|
printf(" . "); /* Improper list */ |
570 |
|
print_val(val, noquote, tstack); |
571 |
|
} |
572 |
|
} while(val->type == tcons && titem == NULL); |
573 |
|
titem=tstack; |
574 |
|
while(titem != stack){ |
575 |
|
tstack=titem->next; |
576 |
|
free(titem); |
577 |
|
titem=tstack; |
578 |
} |
} |
579 |
printf("]"); |
printf(" ]"); |
580 |
break; |
break; |
581 |
} |
} |
582 |
} |
} |
583 |
|
|
584 |
extern void print_(environment *env) |
extern void print_(environment *env) |
585 |
{ |
{ |
586 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
587 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
588 |
env->err=1; |
env->err= 1; |
589 |
return; |
return; |
590 |
} |
} |
591 |
print_h(env->head, 0); |
print_val(CAR(env->head), 0, NULL); |
592 |
nl(); |
nl(); |
593 |
} |
} |
594 |
|
|
602 |
|
|
603 |
extern void princ_(environment *env) |
extern void princ_(environment *env) |
604 |
{ |
{ |
605 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
606 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
607 |
env->err=1; |
env->err= 1; |
608 |
return; |
return; |
609 |
} |
} |
610 |
print_h(env->head, 1); |
print_val(CAR(env->head), 1, NULL); |
611 |
} |
} |
612 |
|
|
613 |
/* Prints the top element of the stack and then discards it. */ |
/* Prints the top element of the stack and then discards it. */ |
619 |
} |
} |
620 |
|
|
621 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
622 |
void print_st(stackitem *stack_head, long counter) |
void print_st(value *stack_head, long counter) |
623 |
{ |
{ |
624 |
if(stack_head->next != NULL) |
if(CDR(stack_head)->type != empty) |
625 |
print_st(stack_head->next, counter+1); |
print_st(CDR(stack_head), counter+1); |
626 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
627 |
print_h(stack_head, 0); |
print_val(CAR(stack_head), 0, NULL); |
628 |
nl(); |
nl(); |
629 |
} |
} |
630 |
|
|
631 |
/* Prints the stack. */ |
/* Prints the stack. */ |
632 |
extern void printstack(environment *env) |
extern void printstack(environment *env) |
633 |
{ |
{ |
634 |
if(env->head == NULL) { |
if(env->head->type == empty) { |
635 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
636 |
return; |
return; |
637 |
} |
} |
642 |
/* Swap the two top elements on the stack. */ |
/* Swap the two top elements on the stack. */ |
643 |
extern void swap(environment *env) |
extern void swap(environment *env) |
644 |
{ |
{ |
645 |
stackitem *temp= env->head; |
value *temp= env->head; |
646 |
|
|
647 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head->type == empty || CDR(env->head)->type == empty) { |
648 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
649 |
env->err=1; |
env->err=1; |
650 |
return; |
return; |
651 |
} |
} |
652 |
|
|
653 |
env->head= env->head->next; |
env->head= CDR(env->head); |
654 |
temp->next= env->head->next; |
CDR(temp)= CDR(env->head); |
655 |
env->head->next= temp; |
CDR(env->head)= temp; |
656 |
} |
} |
657 |
|
|
658 |
/* Rotate the first three elements on the stack. */ |
/* Rotate the first three elements on the stack. */ |
659 |
extern void rot(environment *env) |
extern void rot(environment *env) |
660 |
{ |
{ |
661 |
stackitem *temp= env->head; |
value *temp= env->head; |
662 |
|
|
663 |
if(env->head==NULL || env->head->next==NULL |
if(env->head->type == empty || CDR(env->head)->type == empty |
664 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type == empty) { |
665 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
666 |
env->err=1; |
env->err= 1; |
667 |
return; |
return; |
668 |
} |
} |
669 |
|
|
670 |
env->head= env->head->next->next; |
env->head= CDR(CDR(env->head)); |
671 |
temp->next->next= env->head->next; |
CDR(CDR(temp))= CDR(env->head); |
672 |
env->head->next= temp; |
CDR(env->head)= temp; |
673 |
} |
} |
674 |
|
|
675 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
677 |
{ |
{ |
678 |
value *val; |
value *val; |
679 |
|
|
680 |
if(env->head == NULL) { |
if(env->head->type==empty) { |
681 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
682 |
env->err=1; |
env->err= 1; |
683 |
return; |
return; |
684 |
} |
} |
685 |
|
|
686 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
687 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
688 |
env->err=2; |
env->err= 2; |
689 |
return; |
return; |
690 |
} |
} |
691 |
|
|
692 |
val=((symbol *)(env->head->item->content.ptr))->val; |
val= CAR(env->head)->content.sym->val; |
693 |
if(val == NULL){ |
if(val == NULL){ |
694 |
printerr("Unbound Variable"); |
printerr("Unbound Variable"); |
695 |
env->err=3; |
env->err= 3; |
696 |
return; |
return; |
697 |
} |
} |
698 |
protect(val); |
push_val(env, val); /* Return the symbol's bound value */ |
699 |
toss(env); /* toss the symbol */ |
swap(env); |
700 |
|
if(env->err) return; |
701 |
|
toss(env); /* toss the symbol */ |
702 |
if(env->err) return; |
if(env->err) return; |
|
push_val(env, val); /* Return its bound value */ |
|
|
unprotect(val); |
|
703 |
} |
} |
704 |
|
|
705 |
/* If the top element is a symbol, determine if it's bound to a |
/* If the top element is a symbol, determine if it's bound to a |
709 |
{ |
{ |
710 |
funcp in_func; |
funcp in_func; |
711 |
value* temp_val; |
value* temp_val; |
712 |
stackitem* iterator; |
value* iterator; |
713 |
|
|
714 |
eval_start: |
eval_start: |
715 |
|
|
716 |
gc_maybe(env); |
gc_maybe(env); |
717 |
|
|
718 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
719 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
720 |
env->err=1; |
env->err= 1; |
721 |
return; |
return; |
722 |
} |
} |
723 |
|
|
724 |
switch(env->head->item->type) { |
switch(CAR(env->head)->type) { |
725 |
/* if it's a symbol */ |
/* if it's a symbol */ |
726 |
case symb: |
case symb: |
727 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
728 |
if(env->err) return; |
if(env->err) return; |
729 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(CAR(env->head)->type!=symb){ /* don't recurse symbols */ |
730 |
goto eval_start; |
goto eval_start; |
731 |
} |
} |
732 |
return; |
return; |
733 |
|
|
734 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
735 |
case func: |
case func: |
736 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(CAR(env->head)->content.ptr); |
737 |
toss(env); |
toss(env); |
738 |
if(env->err) return; |
if(env->err) return; |
739 |
return in_func(env); |
return in_func(env); |
740 |
|
|
741 |
/* If it's a list */ |
/* If it's a list */ |
742 |
case list: |
case tcons: |
743 |
temp_val= env->head->item; |
temp_val= CAR(env->head); |
744 |
protect(temp_val); |
protect(temp_val); |
745 |
|
|
746 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
747 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= temp_val; |
748 |
|
|
749 |
while(iterator!=NULL) { |
while(iterator->type != empty) { |
750 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
751 |
|
|
752 |
if(env->head->item->type==symb |
if(CAR(env->head)->type==symb |
753 |
&& (((symbol*)(env->head->item->content.ptr))->id[0] == ';')) { |
&& CAR(env->head)->content.sym->id[0]==';') { |
754 |
toss(env); |
toss(env); |
755 |
if(env->err) return; |
if(env->err) return; |
756 |
|
|
757 |
if(iterator->next == NULL){ |
if(CDR(iterator)->type == empty){ |
758 |
goto eval_start; |
goto eval_start; |
759 |
} |
} |
760 |
eval(env); |
eval(env); |
761 |
if(env->err) return; |
if(env->err) return; |
762 |
} |
} |
763 |
iterator= iterator->next; |
if (CDR(iterator)->type == empty || CDR(iterator)->type == tcons) |
764 |
|
iterator= CDR(iterator); |
765 |
|
else { |
766 |
|
printerr("Bad Argument Type"); /* Improper list */ |
767 |
|
env->err= 2; |
768 |
|
return; |
769 |
|
} |
770 |
} |
} |
771 |
unprotect(temp_val); |
unprotect(temp_val); |
772 |
return; |
return; |
773 |
|
|
774 |
default: |
case empty: |
775 |
|
case integer: |
776 |
|
case tfloat: |
777 |
|
case string: |
778 |
return; |
return; |
779 |
} |
} |
780 |
} |
} |
782 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
783 |
extern void rev(environment *env) |
extern void rev(environment *env) |
784 |
{ |
{ |
785 |
stackitem *old_head, *new_head, *item; |
value *old_head, *new_head, *item; |
786 |
|
|
787 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
788 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
789 |
env->err= 1; |
env->err= 1; |
790 |
return; |
return; |
791 |
} |
} |
792 |
|
|
793 |
if(env->head->item->type!=list) { |
if(CAR(env->head)->type==empty) |
794 |
|
return; /* Don't reverse an empty list */ |
795 |
|
|
796 |
|
if(CAR(env->head)->type!=tcons) { |
797 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
798 |
env->err= 2; |
env->err= 2; |
799 |
return; |
return; |
800 |
} |
} |
801 |
|
|
802 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= CAR(env->head); |
803 |
new_head= NULL; |
new_head= new_val(env); |
804 |
while(old_head != NULL){ |
while(old_head->type != empty) { |
805 |
item= old_head; |
item= old_head; |
806 |
old_head= old_head->next; |
old_head= CDR(old_head); |
807 |
item->next= new_head; |
CDR(item)= new_head; |
808 |
new_head= item; |
new_head= item; |
809 |
} |
} |
810 |
env->head->item->content.ptr= new_head; |
CAR(env->head)= new_head; |
811 |
} |
} |
812 |
|
|
813 |
/* Make a list. */ |
/* Make a list. */ |
814 |
extern void pack(environment *env) |
extern void pack(environment *env) |
815 |
{ |
{ |
816 |
stackitem *iterator, *temp; |
value *iterator, *temp, *ending; |
|
value *pack; |
|
817 |
|
|
818 |
iterator= env->head; |
ending=new_val(env); |
|
pack= new_val(env); |
|
|
protect(pack); |
|
819 |
|
|
820 |
if(iterator==NULL |
iterator= env->head; |
821 |
|| (iterator->item->type==symb |
if(iterator->type == empty |
822 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
|| (CAR(iterator)->type==symb |
823 |
temp= NULL; |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
824 |
|
temp= ending; |
825 |
toss(env); |
toss(env); |
826 |
} else { |
} else { |
827 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
828 |
while(iterator->next!=NULL |
while(CDR(iterator)->type != empty |
829 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
830 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
831 |
iterator= iterator->next; |
iterator= CDR(iterator); |
832 |
|
|
833 |
/* Extract list */ |
/* Extract list */ |
834 |
temp= env->head; |
temp= env->head; |
835 |
env->head= iterator->next; |
env->head= CDR(iterator); |
836 |
iterator->next= NULL; |
CDR(iterator)= ending; |
837 |
|
|
838 |
pack->type= list; |
if(env->head->type != empty) |
|
pack->content.ptr= temp; |
|
|
|
|
|
if(env->head!=NULL) |
|
839 |
toss(env); |
toss(env); |
840 |
} |
} |
841 |
|
|
842 |
/* Push list */ |
/* Push list */ |
843 |
|
|
844 |
push_val(env, pack); |
push_val(env, temp); |
845 |
rev(env); |
rev(env); |
|
|
|
|
unprotect(pack); |
|
846 |
} |
} |
847 |
|
|
848 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
849 |
extern void expand(environment *env) |
extern void expand(environment *env) |
850 |
{ |
{ |
851 |
stackitem *temp, *new_head; |
value *temp, *new_head; |
852 |
|
|
853 |
/* Is top element a list? */ |
/* Is top element a list? */ |
854 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
855 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
856 |
env->err= 1; |
env->err= 1; |
857 |
return; |
return; |
858 |
} |
} |
859 |
if(env->head->item->type!=list) { |
|
860 |
|
if(CAR(env->head)->type!=tcons) { |
861 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
862 |
env->err= 2; |
env->err= 2; |
863 |
return; |
return; |
869 |
return; |
return; |
870 |
|
|
871 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
872 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= CAR(env->head); |
873 |
|
|
874 |
toss(env); |
toss(env); |
875 |
|
|
876 |
/* Find the end of the list */ |
/* Find the end of the list */ |
877 |
while(temp->next!=NULL) |
while(CDR(temp)->type != empty) { |
878 |
temp= temp->next; |
if (CDR(temp)->type == tcons) |
879 |
|
temp= CDR(temp); |
880 |
|
else { |
881 |
|
printerr("Bad Argument Type"); /* Improper list */ |
882 |
|
env->err= 2; |
883 |
|
return; |
884 |
|
} |
885 |
|
} |
886 |
|
|
887 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
888 |
temp->next= env->head; |
CDR(temp)= env->head; |
889 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
890 |
|
|
891 |
} |
} |
894 |
extern void eq(environment *env) |
extern void eq(environment *env) |
895 |
{ |
{ |
896 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
897 |
|
|
898 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
899 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
900 |
env->err= 1; |
env->err= 1; |
901 |
return; |
return; |
902 |
} |
} |
903 |
|
|
904 |
left= env->head->item->content.ptr; |
left= CAR(env->head)->content.ptr; |
905 |
swap(env); |
right= CAR(CDR(env->head))->content.ptr; |
|
right= env->head->item->content.ptr; |
|
|
result= (left==right); |
|
|
|
|
906 |
toss(env); toss(env); |
toss(env); toss(env); |
907 |
push_int(env, result); |
|
908 |
|
push_int(env, left==right); |
909 |
} |
} |
910 |
|
|
911 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
913 |
{ |
{ |
914 |
int val; |
int val; |
915 |
|
|
916 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
917 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
918 |
env->err= 1; |
env->err= 1; |
919 |
return; |
return; |
920 |
} |
} |
921 |
|
|
922 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
923 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
924 |
env->err= 2; |
env->err= 2; |
925 |
return; |
return; |
926 |
} |
} |
927 |
|
|
928 |
val= env->head->item->content.i; |
val= CAR(env->head)->content.i; |
929 |
toss(env); |
toss(env); |
930 |
push_int(env, !val); |
push_int(env, !val); |
931 |
} |
} |
944 |
symbol *sym; |
symbol *sym; |
945 |
|
|
946 |
/* Needs two values on the stack, the top one must be a symbol */ |
/* Needs two values on the stack, the top one must be a symbol */ |
947 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
948 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
949 |
env->err= 1; |
env->err= 1; |
950 |
return; |
return; |
951 |
} |
} |
952 |
|
|
953 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
954 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
955 |
env->err= 2; |
env->err= 2; |
956 |
return; |
return; |
957 |
} |
} |
958 |
|
|
959 |
/* long names are a pain */ |
/* long names are a pain */ |
960 |
sym= env->head->item->content.ptr; |
sym= CAR(env->head)->content.ptr; |
961 |
|
|
962 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
963 |
sym->val= env->head->next->item; |
sym->val= CAR(CDR(env->head)); |
964 |
|
|
965 |
toss(env); toss(env); |
toss(env); toss(env); |
966 |
} |
} |
983 |
env->gc_limit= 0; |
env->gc_limit= 0; |
984 |
gc_maybe(env); |
gc_maybe(env); |
985 |
|
|
986 |
|
words(env); |
987 |
|
|
988 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
989 |
free(env->free_string); |
free(env->free_string); |
990 |
|
|
991 |
|
#ifdef __linux__ |
992 |
muntrace(); |
muntrace(); |
993 |
|
#endif |
994 |
|
|
995 |
exit(EXIT_SUCCESS); |
exit(EXIT_SUCCESS); |
996 |
} |
} |
998 |
/* Clear stack */ |
/* Clear stack */ |
999 |
extern void clear(environment *env) |
extern void clear(environment *env) |
1000 |
{ |
{ |
1001 |
while(env->head!=NULL) |
while(env->head->type != empty) |
1002 |
toss(env); |
toss(env); |
1003 |
} |
} |
1004 |
|
|
1011 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) { |
1012 |
temp= env->symbols[i]; |
temp= env->symbols[i]; |
1013 |
while(temp!=NULL) { |
while(temp!=NULL) { |
1014 |
|
#ifdef DEBUG |
1015 |
|
if (temp->val != NULL && temp->val->gc.flag.protect) |
1016 |
|
printf("(protected) "); |
1017 |
|
#endif /* DEBUG */ |
1018 |
printf("%s\n", temp->id); |
printf("%s\n", temp->id); |
1019 |
temp= temp->next; |
temp= temp->next; |
1020 |
} |
} |
1037 |
extern void forget(environment *env) |
extern void forget(environment *env) |
1038 |
{ |
{ |
1039 |
char* sym_id; |
char* sym_id; |
|
stackitem *stack_head= env->head; |
|
1040 |
|
|
1041 |
if(stack_head==NULL) { |
if(env->head->type==empty) { |
1042 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1043 |
env->err=1; |
env->err= 1; |
1044 |
return; |
return; |
1045 |
} |
} |
1046 |
|
|
1047 |
if(stack_head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
1048 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1049 |
env->err=2; |
env->err= 2; |
1050 |
return; |
return; |
1051 |
} |
} |
1052 |
|
|
1053 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= CAR(env->head)->content.sym->id; |
1054 |
toss(env); |
toss(env); |
1055 |
|
|
1056 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1068 |
|
|
1069 |
int c; /* getopt option character */ |
int c; /* getopt option character */ |
1070 |
|
|
1071 |
|
#ifdef __linux__ |
1072 |
mtrace(); |
mtrace(); |
1073 |
|
#endif |
1074 |
|
|
1075 |
init_env(&myenv); |
init_env(&myenv); |
1076 |
|
|
1084 |
break; |
break; |
1085 |
case '?': |
case '?': |
1086 |
fprintf (stderr, |
fprintf (stderr, |
1087 |
"Unknown option character `\\x%x'.\n", |
"Unknown option character '\\x%x'.\n", |
1088 |
optopt); |
optopt); |
1089 |
return EX_USAGE; |
return EX_USAGE; |
1090 |
default: |
default: |
1103 |
if(myenv.interactive) { |
if(myenv.interactive) { |
1104 |
printf("Stack version $Revision$\n\ |
printf("Stack version $Revision$\n\ |
1105 |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
1106 |
Stack comes with ABSOLUTELY NO WARRANTY; for details type `warranty;'.\n\ |
Stack comes with ABSOLUTELY NO WARRANTY; for details type 'warranty;'.\n\ |
1107 |
This is free software, and you are welcome to redistribute it\n\ |
This is free software, and you are welcome to redistribute it\n\ |
1108 |
under certain conditions; type `copying;' for details.\n"); |
under certain conditions; type 'copying;' for details.\n"); |
1109 |
} |
} |
1110 |
|
|
1111 |
while(1) { |
while(1) { |
1120 |
} |
} |
1121 |
myenv.err=0; |
myenv.err=0; |
1122 |
} |
} |
1123 |
sx_72656164(&myenv); |
sx_72656164(&myenv); /* "read" */ |
1124 |
if (myenv.err==4) { |
if (myenv.err==4) { /* EOF */ |
1125 |
return EXIT_SUCCESS; /* EOF */ |
myenv.err=0; |
1126 |
} else if(myenv.head!=NULL |
quit(&myenv); |
1127 |
&& myenv.head->item->type==symb |
} else if(myenv.head->type!=empty |
1128 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& CAR(myenv.head)->type==symb |
1129 |
|
&& CAR(myenv.head)->content.sym->id[0] |
1130 |
|
==';') { |
1131 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1132 |
eval(&myenv); |
eval(&myenv); |
1133 |
} |
} |
1146 |
char* new_string; |
char* new_string; |
1147 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1148 |
|
|
1149 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1150 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1151 |
env->err= 1; |
env->err= 1; |
1152 |
return; |
return; |
1153 |
} |
} |
1154 |
|
|
1155 |
if(env->head->item->type==string |
if(CAR(env->head)->type==string |
1156 |
&& env->head->next->item->type==string) { |
&& CAR(CDR(env->head))->type==string) { |
1157 |
a_val= env->head->item; |
a_val= CAR(env->head); |
1158 |
b_val= env->head->next->item; |
b_val= CAR(CDR(env->head)); |
1159 |
protect(a_val); protect(b_val); |
protect(a_val); protect(b_val); |
1160 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1161 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1170 |
return; |
return; |
1171 |
} |
} |
1172 |
|
|
1173 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1174 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1175 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1176 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1177 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1178 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1179 |
push_int(env, b+a); |
push_int(env, b+a); |
1180 |
|
|
1181 |
return; |
return; |
1182 |
} |
} |
1183 |
|
|
1184 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1185 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1186 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1187 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1188 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1189 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1190 |
push_float(env, fb+fa); |
push_float(env, fb+fa); |
1191 |
|
|
1192 |
return; |
return; |
1193 |
} |
} |
1194 |
|
|
1195 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1196 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1197 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1198 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1199 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1200 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1201 |
push_float(env, b+fa); |
push_float(env, b+fa); |
1202 |
|
|
1203 |
return; |
return; |
1204 |
} |
} |
1205 |
|
|
1206 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1207 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1208 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1209 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1210 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1211 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1212 |
push_float(env, fb+a); |
push_float(env, fb+a); |
1213 |
|
|
1224 |
int a, b; |
int a, b; |
1225 |
float fa, fb; |
float fa, fb; |
1226 |
|
|
1227 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1228 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1229 |
env->err=1; |
env->err=1; |
1230 |
return; |
return; |
1231 |
} |
} |
1232 |
|
|
1233 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1234 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1235 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1236 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1237 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1238 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1239 |
push_int(env, b-a); |
push_int(env, b-a); |
1240 |
|
|
1241 |
return; |
return; |
1242 |
} |
} |
1243 |
|
|
1244 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1245 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1246 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1247 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1248 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1249 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1250 |
push_float(env, fb-fa); |
push_float(env, fb-fa); |
1251 |
|
|
1252 |
return; |
return; |
1253 |
} |
} |
1254 |
|
|
1255 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1256 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1257 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1258 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1259 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1260 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1261 |
push_float(env, b-fa); |
push_float(env, b-fa); |
1262 |
|
|
1263 |
return; |
return; |
1264 |
} |
} |
1265 |
|
|
1266 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1267 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1268 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1269 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1270 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1271 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1272 |
push_float(env, fb-a); |
push_float(env, fb-a); |
1273 |
|
|
1284 |
int a, b; |
int a, b; |
1285 |
float fa, fb; |
float fa, fb; |
1286 |
|
|
1287 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1288 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1289 |
env->err=1; |
env->err= 1; |
1290 |
return; |
return; |
1291 |
} |
} |
1292 |
|
|
1293 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1294 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1295 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1296 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1297 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1298 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1299 |
push_int(env, b>a); |
push_int(env, b>a); |
1300 |
|
|
1301 |
return; |
return; |
1302 |
} |
} |
1303 |
|
|
1304 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1305 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1306 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1307 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1308 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1309 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1310 |
push_int(env, fb>fa); |
push_int(env, fb>fa); |
1311 |
|
|
1312 |
return; |
return; |
1313 |
} |
} |
1314 |
|
|
1315 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1316 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1317 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1318 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1319 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1320 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1321 |
push_int(env, b>fa); |
push_int(env, b>fa); |
1322 |
|
|
1323 |
return; |
return; |
1324 |
} |
} |
1325 |
|
|
1326 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1327 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1328 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1329 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1330 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1331 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1332 |
push_int(env, fb>a); |
push_int(env, fb>a); |
1333 |
|
|
1335 |
} |
} |
1336 |
|
|
1337 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1338 |
env->err=2; |
env->err= 2; |
1339 |
} |
} |
1340 |
|
|
1341 |
/* "<" */ |
/* "<" */ |
1362 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1363 |
value *copy_val(environment *env, value *old_value) |
value *copy_val(environment *env, value *old_value) |
1364 |
{ |
{ |
|
stackitem *old_item, *new_item, *prev_item; |
|
1365 |
value *new_value; |
value *new_value; |
1366 |
|
|
1367 |
|
if(old_value==NULL) |
1368 |
|
return NULL; |
1369 |
|
|
1370 |
protect(old_value); |
protect(old_value); |
1371 |
new_value= new_val(env); |
new_value= new_val(env); |
|
protect(new_value); |
|
1372 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1373 |
|
|
1374 |
switch(old_value->type){ |
switch(old_value->type){ |
1376 |
case integer: |
case integer: |
1377 |
case func: |
case func: |
1378 |
case symb: |
case symb: |
1379 |
|
case empty: |
1380 |
new_value->content= old_value->content; |
new_value->content= old_value->content; |
1381 |
break; |
break; |
1382 |
case string: |
case string: |
1383 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1384 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1385 |
break; |
break; |
1386 |
case list: |
case tcons: |
|
new_value->content.ptr= NULL; |
|
1387 |
|
|
1388 |
prev_item= NULL; |
new_value->content.c= malloc(sizeof(pair)); |
1389 |
old_item= (stackitem*)(old_value->content.ptr); |
assert(new_value->content.c!=NULL); |
1390 |
|
env->gc_count += sizeof(pair); |
1391 |
|
|
1392 |
while(old_item != NULL) { /* While list is not empty */ |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
1393 |
new_item= malloc(sizeof(stackitem)); |
CDR(new_value)= copy_val(env, CDR(old_value)); /* recurse */ |
|
new_item->item= copy_val(env, old_item->item); /* recurse */ |
|
|
new_item->next= NULL; |
|
|
if(prev_item != NULL) /* If this wasn't the first item */ |
|
|
prev_item->next= new_item; /* point the previous item to the |
|
|
new item */ |
|
|
else |
|
|
new_value->content.ptr= new_item; |
|
|
old_item= old_item->next; |
|
|
prev_item= new_item; |
|
|
} |
|
1394 |
break; |
break; |
1395 |
} |
} |
1396 |
|
|
1397 |
unprotect(old_value); unprotect(new_value); |
unprotect(old_value); |
1398 |
|
|
1399 |
return new_value; |
return new_value; |
1400 |
} |
} |
1402 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1403 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1404 |
{ |
{ |
1405 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
1406 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1407 |
env->err= 1; |
env->err= 1; |
1408 |
return; |
return; |
1409 |
} |
} |
1410 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, CAR(env->head))); |
1411 |
} |
} |
1412 |
|
|
1413 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1415 |
{ |
{ |
1416 |
int truth; |
int truth; |
1417 |
|
|
1418 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1419 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1420 |
env->err= 1; |
env->err= 1; |
1421 |
return; |
return; |
1422 |
} |
} |
1423 |
|
|
1424 |
if(env->head->next->item->type != integer) { |
if(CAR(CDR(env->head))->type != integer) { |
1425 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1426 |
env->err=2; |
env->err= 2; |
1427 |
return; |
return; |
1428 |
} |
} |
1429 |
|
|
1430 |
swap(env); |
swap(env); |
1431 |
if(env->err) return; |
if(env->err) return; |
1432 |
|
|
1433 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1434 |
|
|
1435 |
toss(env); |
toss(env); |
1436 |
if(env->err) return; |
if(env->err) return; |
1446 |
{ |
{ |
1447 |
int truth; |
int truth; |
1448 |
|
|
1449 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1450 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1451 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1452 |
env->err=1; |
env->err= 1; |
1453 |
return; |
return; |
1454 |
} |
} |
1455 |
|
|
1456 |
if(env->head->next->next->item->type != integer) { |
if(CAR(CDR(CDR(env->head)))->type!=integer) { |
1457 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1458 |
env->err=2; |
env->err= 2; |
1459 |
return; |
return; |
1460 |
} |
} |
1461 |
|
|
1462 |
rot(env); |
rot(env); |
1463 |
if(env->err) return; |
if(env->err) return; |
1464 |
|
|
1465 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1466 |
|
|
1467 |
toss(env); |
toss(env); |
1468 |
if(env->err) return; |
if(env->err) return; |
1477 |
eval(env); |
eval(env); |
1478 |
} |
} |
1479 |
|
|
1480 |
|
extern void sx_656c7365(environment *env) |
1481 |
|
{ |
1482 |
|
if(env->head->type==empty || CDR(env->head)->type==empty |
1483 |
|
|| CDR(CDR(env->head))->type==empty || CDR(CDR(CDR(env->head)))->type==empty |
1484 |
|
|| CDR(CDR(CDR(CDR(env->head))))->type==empty) { |
1485 |
|
printerr("Too Few Arguments"); |
1486 |
|
env->err= 1; |
1487 |
|
return; |
1488 |
|
} |
1489 |
|
|
1490 |
|
if(CAR(CDR(env->head))->type!=symb |
1491 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "then")!=0 |
1492 |
|
|| CAR(CDR(CDR(CDR(env->head))))->type!=symb |
1493 |
|
|| strcmp(CAR(CDR(CDR(CDR(env->head))))->content.sym->id, "if")!=0) { |
1494 |
|
printerr("Bad Argument Type"); |
1495 |
|
env->err= 2; |
1496 |
|
return; |
1497 |
|
} |
1498 |
|
|
1499 |
|
swap(env); toss(env); rot(env); toss(env); |
1500 |
|
ifelse(env); |
1501 |
|
} |
1502 |
|
|
1503 |
|
extern void then(environment *env) |
1504 |
|
{ |
1505 |
|
if(env->head->type==empty || CDR(env->head)->type==empty |
1506 |
|
|| CDR(CDR(env->head))->type==empty) { |
1507 |
|
printerr("Too Few Arguments"); |
1508 |
|
env->err= 1; |
1509 |
|
return; |
1510 |
|
} |
1511 |
|
|
1512 |
|
if(CAR(CDR(env->head))->type!=symb |
1513 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "if")!=0) { |
1514 |
|
printerr("Bad Argument Type"); |
1515 |
|
env->err= 2; |
1516 |
|
return; |
1517 |
|
} |
1518 |
|
|
1519 |
|
swap(env); toss(env); |
1520 |
|
sx_6966(env); |
1521 |
|
} |
1522 |
|
|
1523 |
/* "while" */ |
/* "while" */ |
1524 |
extern void sx_7768696c65(environment *env) |
extern void sx_7768696c65(environment *env) |
1525 |
{ |
{ |
1526 |
int truth; |
int truth; |
1527 |
value *loop, *test; |
value *loop, *test; |
1528 |
|
|
1529 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1530 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1531 |
env->err=1; |
env->err= 1; |
1532 |
return; |
return; |
1533 |
} |
} |
1534 |
|
|
1535 |
loop= env->head->item; |
loop= CAR(env->head); |
1536 |
protect(loop); |
protect(loop); |
1537 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1538 |
|
|
1539 |
test= env->head->item; |
test= CAR(env->head); |
1540 |
protect(test); |
protect(test); |
1541 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1542 |
|
|
1544 |
push_val(env, test); |
push_val(env, test); |
1545 |
eval(env); |
eval(env); |
1546 |
|
|
1547 |
if(env->head->item->type != integer) { |
if(CAR(env->head)->type != integer) { |
1548 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1549 |
env->err= 2; |
env->err= 2; |
1550 |
return; |
return; |
1551 |
} |
} |
1552 |
|
|
1553 |
truth= env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1554 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1555 |
|
|
1556 |
if(truth) { |
if(truth) { |
1572 |
value *loop; |
value *loop; |
1573 |
int foo1, foo2; |
int foo1, foo2; |
1574 |
|
|
1575 |
if(env->head==NULL || env->head->next==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1576 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1577 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1578 |
env->err= 1; |
env->err= 1; |
1579 |
return; |
return; |
1580 |
} |
} |
1581 |
|
|
1582 |
if(env->head->next->item->type!=integer |
if(CAR(CDR(env->head))->type!=integer |
1583 |
|| env->head->next->next->item->type!=integer) { |
|| CAR(CDR(CDR(env->head)))->type!=integer) { |
1584 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1585 |
env->err= 2; |
env->err= 2; |
1586 |
return; |
return; |
1587 |
} |
} |
1588 |
|
|
1589 |
loop= env->head->item; |
loop= CAR(env->head); |
1590 |
protect(loop); |
protect(loop); |
1591 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1592 |
|
|
1593 |
foo2= env->head->item->content.i; |
foo2= CAR(env->head)->content.i; |
1594 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1595 |
|
|
1596 |
foo1= env->head->item->content.i; |
foo1= CAR(env->head)->content.i; |
1597 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1598 |
|
|
1599 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1618 |
extern void foreach(environment *env) |
extern void foreach(environment *env) |
1619 |
{ |
{ |
1620 |
value *loop, *foo; |
value *loop, *foo; |
1621 |
stackitem *iterator; |
value *iterator; |
1622 |
|
|
1623 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1624 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1625 |
env->err= 1; |
env->err= 1; |
1626 |
return; |
return; |
1627 |
} |
} |
1628 |
|
|
1629 |
if(env->head->next->item->type != list) { |
if(CAR(CDR(env->head))->type!=tcons) { |
1630 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1631 |
env->err= 2; |
env->err= 2; |
1632 |
return; |
return; |
1633 |
} |
} |
1634 |
|
|
1635 |
loop= env->head->item; |
loop= CAR(env->head); |
1636 |
protect(loop); |
protect(loop); |
1637 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1638 |
|
|
1639 |
foo= env->head->item; |
foo= CAR(env->head); |
1640 |
protect(foo); |
protect(foo); |
1641 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1642 |
|
|
1643 |
iterator= foo->content.ptr; |
iterator= foo; |
1644 |
|
|
1645 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
1646 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
1647 |
push_val(env, loop); |
push_val(env, loop); |
1648 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1649 |
iterator= iterator->next; |
if (iterator->type == tcons){ |
1650 |
|
iterator= CDR(iterator); |
1651 |
|
} else { |
1652 |
|
printerr("Bad Argument Type"); /* Improper list */ |
1653 |
|
env->err= 2; |
1654 |
|
break; |
1655 |
|
} |
1656 |
} |
} |
1657 |
unprotect(loop); unprotect(foo); |
unprotect(loop); unprotect(foo); |
1658 |
} |
} |
1661 |
extern void to(environment *env) |
extern void to(environment *env) |
1662 |
{ |
{ |
1663 |
int ending, start, i; |
int ending, start, i; |
1664 |
stackitem *iterator, *temp; |
value *iterator, *temp; |
|
value *pack; |
|
1665 |
|
|
1666 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1667 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1668 |
env->err=1; |
env->err= 1; |
1669 |
return; |
return; |
1670 |
} |
} |
1671 |
|
|
1672 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1673 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1674 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1675 |
env->err=2; |
env->err= 2; |
1676 |
return; |
return; |
1677 |
} |
} |
1678 |
|
|
1679 |
ending= env->head->item->content.i; |
ending= CAR(env->head)->content.i; |
1680 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1681 |
start= env->head->item->content.i; |
start= CAR(env->head)->content.i; |
1682 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1683 |
|
|
1684 |
push_sym(env, "["); |
push_sym(env, "["); |
1692 |
} |
} |
1693 |
|
|
1694 |
iterator= env->head; |
iterator= env->head; |
|
pack= new_val(env); |
|
|
protect(pack); |
|
1695 |
|
|
1696 |
if(iterator==NULL |
if(iterator->type==empty |
1697 |
|| (iterator->item->type==symb |
|| (CAR(iterator)->type==symb |
1698 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
1699 |
temp= NULL; |
temp= NULL; |
1700 |
toss(env); |
toss(env); |
1701 |
} else { |
} else { |
1702 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
1703 |
while(iterator->next!=NULL |
while(CDR(iterator)!=NULL |
1704 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
1705 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
1706 |
iterator= iterator->next; |
iterator= CDR(iterator); |
1707 |
|
|
1708 |
/* Extract list */ |
/* Extract list */ |
1709 |
temp= env->head; |
temp= env->head; |
1710 |
env->head= iterator->next; |
env->head= CDR(iterator); |
1711 |
iterator->next= NULL; |
CDR(iterator)= NULL; |
1712 |
|
|
|
pack->type= list; |
|
|
pack->content.ptr= temp; |
|
|
|
|
1713 |
if(env->head!=NULL) |
if(env->head!=NULL) |
1714 |
toss(env); |
toss(env); |
1715 |
} |
} |
1716 |
|
|
1717 |
/* Push list */ |
/* Push list */ |
1718 |
|
push_val(env, temp); |
|
push_val(env, pack); |
|
|
|
|
|
unprotect(pack); |
|
1719 |
} |
} |
1720 |
|
|
1721 |
/* Read a string */ |
/* Read a string */ |
1745 |
int count= -1; |
int count= -1; |
1746 |
float ftemp; |
float ftemp; |
1747 |
static int depth= 0; |
static int depth= 0; |
1748 |
char *match, *ctemp; |
char *match; |
1749 |
size_t inlength; |
size_t inlength; |
1750 |
|
|
1751 |
if(env->in_string==NULL) { |
if(env->in_string==NULL) { |
1754 |
} |
} |
1755 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1756 |
|
|
1757 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(CAR(env->head)->content.ptr))[0]=='\0'){ |
1758 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1759 |
return; |
return; |
1760 |
} |
} |
1761 |
|
|
1762 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(CAR(env->head)->content.ptr)+1); |
1763 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1764 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, CAR(env->head)->content.ptr); |
1765 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1766 |
} |
} |
1767 |
|
|
1779 |
} else { |
} else { |
1780 |
push_float(env, ftemp); |
push_float(env, ftemp); |
1781 |
} |
} |
1782 |
|
} else if(sscanf(env->in_string, "\"\"%n", &readlength) != EOF |
1783 |
|
&& readlength != -1) { |
1784 |
|
push_cstring(env, ""); |
1785 |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
1786 |
&& readlength != -1) { |
&& readlength != -1) { |
1787 |
push_cstring(env, match); |
push_cstring(env, match); |
1813 |
return sx_72656164(env); |
return sx_72656164(env); |
1814 |
} |
} |
1815 |
|
|
1816 |
|
#ifdef __linux__ |
1817 |
extern void beep(environment *env) |
extern void beep(environment *env) |
1818 |
{ |
{ |
1819 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1820 |
|
|
1821 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1822 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1823 |
env->err=1; |
env->err= 1; |
1824 |
return; |
return; |
1825 |
} |
} |
1826 |
|
|
1827 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1828 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1829 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1830 |
env->err=2; |
env->err= 2; |
1831 |
return; |
return; |
1832 |
} |
} |
1833 |
|
|
1834 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1835 |
toss(env); |
toss(env); |
1836 |
freq=env->head->item->content.i; |
freq= CAR(env->head)->content.i; |
1837 |
toss(env); |
toss(env); |
1838 |
|
|
1839 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1840 |
length */ |
length */ |
1841 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1842 |
timer ticks */ |
timer ticks */ |
1843 |
|
|
1844 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1845 |
|
|
1846 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1847 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1848 |
case 0: |
case 0: |
1849 |
usleep(dur); |
usleep(dur); |
1850 |
return; |
return; |
1851 |
case -1: |
case -1: |
1852 |
perror("beep"); |
perror("beep"); |
1853 |
env->err=5; |
env->err= 5; |
1854 |
return; |
return; |
1855 |
default: |
default: |
1856 |
abort(); |
abort(); |
1857 |
} |
} |
1858 |
} |
} |
1859 |
|
#endif /* __linux__ */ |
1860 |
|
|
1861 |
/* "wait" */ |
/* "wait" */ |
1862 |
extern void sx_77616974(environment *env) |
extern void sx_77616974(environment *env) |
1863 |
{ |
{ |
1864 |
int dur; |
int dur; |
1865 |
|
|
1866 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
1867 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1868 |
env->err=1; |
env->err= 1; |
1869 |
return; |
return; |
1870 |
} |
} |
1871 |
|
|
1872 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
1873 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1874 |
env->err=2; |
env->err= 2; |
1875 |
return; |
return; |
1876 |
} |
} |
1877 |
|
|
1878 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1879 |
toss(env); |
toss(env); |
1880 |
|
|
1881 |
usleep(dur); |
usleep(dur); |
1883 |
|
|
1884 |
extern void copying(environment *env) |
extern void copying(environment *env) |
1885 |
{ |
{ |
1886 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf(" GNU GENERAL PUBLIC LICENSE\n\ |
1887 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
1888 |
\n\ |
\n\ |
1889 |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
2172 |
int a, b; |
int a, b; |
2173 |
float fa, fb; |
float fa, fb; |
2174 |
|
|
2175 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2176 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2177 |
env->err=1; |
env->err= 1; |
2178 |
return; |
return; |
2179 |
} |
} |
2180 |
|
|
2181 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2182 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2183 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2184 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2185 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2186 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2187 |
push_int(env, b*a); |
push_int(env, b*a); |
2188 |
|
|
2189 |
return; |
return; |
2190 |
} |
} |
2191 |
|
|
2192 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2193 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2194 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2195 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2196 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2197 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2198 |
push_float(env, fb*fa); |
push_float(env, fb*fa); |
2199 |
|
|
2200 |
return; |
return; |
2201 |
} |
} |
2202 |
|
|
2203 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2204 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2205 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2206 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2207 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2208 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2209 |
push_float(env, b*fa); |
push_float(env, b*fa); |
2210 |
|
|
2211 |
return; |
return; |
2212 |
} |
} |
2213 |
|
|
2214 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2215 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2216 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2217 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2218 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2219 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2220 |
push_float(env, fb*a); |
push_float(env, fb*a); |
2221 |
|
|
2223 |
} |
} |
2224 |
|
|
2225 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2226 |
env->err=2; |
env->err= 2; |
2227 |
} |
} |
2228 |
|
|
2229 |
/* "/" */ |
/* "/" */ |
2232 |
int a, b; |
int a, b; |
2233 |
float fa, fb; |
float fa, fb; |
2234 |
|
|
2235 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2236 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2237 |
env->err=1; |
env->err= 1; |
2238 |
return; |
return; |
2239 |
} |
} |
2240 |
|
|
2241 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2242 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2243 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2244 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2245 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2246 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2247 |
push_float(env, b/a); |
push_float(env, b/a); |
2248 |
|
|
2249 |
return; |
return; |
2250 |
} |
} |
2251 |
|
|
2252 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2253 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2254 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2255 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2256 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2257 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2258 |
push_float(env, fb/fa); |
push_float(env, fb/fa); |
2259 |
|
|
2260 |
return; |
return; |
2261 |
} |
} |
2262 |
|
|
2263 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2264 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2265 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2266 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2267 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2268 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2269 |
push_float(env, b/fa); |
push_float(env, b/fa); |
2270 |
|
|
2271 |
return; |
return; |
2272 |
} |
} |
2273 |
|
|
2274 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2275 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2276 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2277 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2278 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2279 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2280 |
push_float(env, fb/a); |
push_float(env, fb/a); |
2281 |
|
|
2283 |
} |
} |
2284 |
|
|
2285 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2286 |
env->err=2; |
env->err= 2; |
2287 |
} |
} |
2288 |
|
|
2289 |
/* "mod" */ |
/* "mod" */ |
2291 |
{ |
{ |
2292 |
int a, b; |
int a, b; |
2293 |
|
|
2294 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2295 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2296 |
env->err= 1; |
env->err= 1; |
2297 |
return; |
return; |
2298 |
} |
} |
2299 |
|
|
2300 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2301 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2302 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2303 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2304 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2305 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2306 |
push_int(env, b%a); |
push_int(env, b%a); |
2307 |
|
|
2309 |
} |
} |
2310 |
|
|
2311 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2312 |
env->err=2; |
env->err= 2; |
2313 |
} |
} |
2314 |
|
|
2315 |
/* "div" */ |
/* "div" */ |
2317 |
{ |
{ |
2318 |
int a, b; |
int a, b; |
2319 |
|
|
2320 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2321 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2322 |
env->err= 1; |
env->err= 1; |
2323 |
return; |
return; |
2324 |
} |
} |
2325 |
|
|
2326 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2327 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2328 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2329 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2330 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2331 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2332 |
push_int(env, (int)b/a); |
push_int(env, (int)b/a); |
2333 |
|
|
2337 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2338 |
env->err= 2; |
env->err= 2; |
2339 |
} |
} |
2340 |
|
|
2341 |
|
extern void setcar(environment *env) |
2342 |
|
{ |
2343 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2344 |
|
printerr("Too Few Arguments"); |
2345 |
|
env->err= 1; |
2346 |
|
return; |
2347 |
|
} |
2348 |
|
|
2349 |
|
if(CDR(env->head)->type!=tcons) { |
2350 |
|
printerr("Bad Argument Type"); |
2351 |
|
env->err= 2; |
2352 |
|
return; |
2353 |
|
} |
2354 |
|
|
2355 |
|
CAR(CAR(CDR(env->head)))=CAR(env->head); |
2356 |
|
toss(env); |
2357 |
|
} |
2358 |
|
|
2359 |
|
extern void setcdr(environment *env) |
2360 |
|
{ |
2361 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2362 |
|
printerr("Too Few Arguments"); |
2363 |
|
env->err= 1; |
2364 |
|
return; |
2365 |
|
} |
2366 |
|
|
2367 |
|
if(CDR(env->head)->type!=tcons) { |
2368 |
|
printerr("Bad Argument Type"); |
2369 |
|
env->err= 2; |
2370 |
|
return; |
2371 |
|
} |
2372 |
|
|
2373 |
|
CDR(CAR(CDR(env->head)))=CAR(env->head); |
2374 |
|
toss(env); |
2375 |
|
} |
2376 |
|
|
2377 |
|
extern void car(environment *env) |
2378 |
|
{ |
2379 |
|
if(env->head->type==empty) { |
2380 |
|
printerr("Too Few Arguments"); |
2381 |
|
env->err= 1; |
2382 |
|
return; |
2383 |
|
} |
2384 |
|
|
2385 |
|
if(CAR(env->head)->type!=tcons) { |
2386 |
|
printerr("Bad Argument Type"); |
2387 |
|
env->err= 2; |
2388 |
|
return; |
2389 |
|
} |
2390 |
|
|
2391 |
|
CAR(env->head)=CAR(CAR(env->head)); |
2392 |
|
} |
2393 |
|
|
2394 |
|
extern void cdr(environment *env) |
2395 |
|
{ |
2396 |
|
if(env->head->type==empty) { |
2397 |
|
printerr("Too Few Arguments"); |
2398 |
|
env->err= 1; |
2399 |
|
return; |
2400 |
|
} |
2401 |
|
|
2402 |
|
if(CAR(env->head)->type!=tcons) { |
2403 |
|
printerr("Bad Argument Type"); |
2404 |
|
env->err= 2; |
2405 |
|
return; |
2406 |
|
} |
2407 |
|
|
2408 |
|
CAR(env->head)=CDR(CAR(env->head)); |
2409 |
|
} |
2410 |
|
|
2411 |
|
extern void cons(environment *env) |
2412 |
|
{ |
2413 |
|
value *val; |
2414 |
|
|
2415 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2416 |
|
printerr("Too Few Arguments"); |
2417 |
|
env->err= 1; |
2418 |
|
return; |
2419 |
|
} |
2420 |
|
|
2421 |
|
val=new_val(env); |
2422 |
|
val->content.c= malloc(sizeof(pair)); |
2423 |
|
assert(val->content.c!=NULL); |
2424 |
|
|
2425 |
|
env->gc_count += sizeof(pair); |
2426 |
|
val->type=tcons; |
2427 |
|
|
2428 |
|
CAR(val)= CAR(CDR(env->head)); |
2429 |
|
CDR(val)= CAR(env->head); |
2430 |
|
|
2431 |
|
push_val(env, val); |
2432 |
|
|
2433 |
|
swap(env); if(env->err) return; |
2434 |
|
toss(env); if(env->err) return; |
2435 |
|
swap(env); if(env->err) return; |
2436 |
|
toss(env); if(env->err) return; |
2437 |
|
} |