48 |
{ |
{ |
49 |
int i; |
int i; |
50 |
|
|
51 |
env->gc_limit= 200; |
env->gc_limit= 400000; |
52 |
env->gc_count= 0; |
env->gc_count= 0; |
53 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
54 |
|
|
70 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
71 |
extern void toss(environment *env) |
extern void toss(environment *env) |
72 |
{ |
{ |
73 |
stackitem *temp= env->head; |
cons *temp= env->head; |
74 |
|
|
75 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
76 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
77 |
env->err= 1; |
env->err= 1; |
78 |
return; |
return; |
79 |
} |
} |
80 |
|
|
81 |
env->head= env->head->next; /* Remove the top stack item */ |
env->head= env->head->cdr->content.c; /* Remove the top stack item */ |
82 |
free(temp); /* Free the old top stack item */ |
free(temp); /* Free the old top stack item */ |
|
|
|
|
env->gc_limit--; |
|
83 |
} |
} |
84 |
|
|
85 |
/* 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. */ |
121 |
|
|
122 |
nitem->item= nval; |
nitem->item= nval; |
123 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
124 |
|
|
125 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
126 |
|
|
127 |
env->gc_count++; |
env->gc_count += sizeof(value); |
128 |
nval->gc.flag.mark= 0; |
nval->gc.flag.mark= 0; |
129 |
nval->gc.flag.protect= 0; |
nval->gc.flag.protect= 0; |
130 |
|
|
135 |
Marked values are not collected by the GC. */ |
Marked values are not collected by the GC. */ |
136 |
inline void gc_mark(value *val) |
inline void gc_mark(value *val) |
137 |
{ |
{ |
138 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.mark) |
|
|
|
|
if(val->gc.flag.mark) |
|
139 |
return; |
return; |
140 |
|
|
141 |
val->gc.flag.mark= 1; |
val->gc.flag.mark= 1; |
142 |
|
|
143 |
if(val->type==list) { |
if(val->type==tcons && val->content.c!=NULL) { |
144 |
iterator= val->content.ptr; |
gc_mark(val->content.c->car); |
145 |
|
gc_mark(val->content.c->cdr); |
|
while(iterator!=NULL) { |
|
|
gc_mark(iterator->item); |
|
|
iterator= iterator->next; |
|
|
} |
|
146 |
} |
} |
147 |
} |
} |
148 |
|
|
157 |
/* Start GC */ |
/* Start GC */ |
158 |
extern void gc_init(environment *env) |
extern void gc_init(environment *env) |
159 |
{ |
{ |
160 |
stackitem *new_head= NULL, *titem, *iterator; |
stackitem *new_head= NULL, *titem; |
161 |
|
cons *iterator; |
162 |
symbol *tsymb; |
symbol *tsymb; |
163 |
int i; |
int i; |
164 |
|
|
165 |
|
if(env->interactive) |
166 |
|
printf("Garbage collecting."); |
167 |
|
|
168 |
/* Mark values on stack */ |
/* Mark values on stack */ |
169 |
iterator= env->head; |
if(env->head!=NULL) { |
170 |
while(iterator!=NULL) { |
gc_mark(env->head->car); |
171 |
gc_mark(iterator->item); |
gc_mark(env->head->cdr); |
|
iterator= iterator->next; |
|
172 |
} |
} |
173 |
|
|
174 |
|
if(env->interactive) |
175 |
|
printf("."); |
176 |
|
|
177 |
|
|
178 |
/* Mark values in hashtable */ |
/* Mark values in hashtable */ |
179 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) |
180 |
tsymb= env->symbols[i]; |
for(tsymb= env->symbols[i]; tsymb!=NULL; tsymb= tsymb->next) |
|
while(tsymb!=NULL) { |
|
181 |
if (tsymb->val != NULL) |
if (tsymb->val != NULL) |
182 |
gc_mark(tsymb->val); |
gc_mark(tsymb->val); |
183 |
tsymb= tsymb->next; |
|
184 |
} |
|
185 |
} |
if(env->interactive) |
186 |
|
printf("."); |
187 |
|
|
188 |
|
|
189 |
env->gc_count= 0; |
env->gc_count= 0; |
190 |
|
|
192 |
|
|
193 |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
194 |
|
|
195 |
switch(env->gc_ref->item->type) { /* Remove content */ |
if(env->gc_ref->item->type==string) /* Remove content */ |
|
case string: |
|
196 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
197 |
break; |
|
|
case list: |
|
|
while(env->gc_ref->item->content.ptr!=NULL) { |
|
|
titem= env->gc_ref->item->content.ptr; |
|
|
env->gc_ref->item->content.ptr= titem->next; |
|
|
free(titem); |
|
|
} |
|
|
default: |
|
|
} |
|
198 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
199 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
200 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
201 |
env->gc_ref= titem; |
env->gc_ref= titem; |
202 |
continue; |
continue; |
203 |
} |
} |
204 |
|
|
205 |
|
/* Keep values */ |
206 |
|
env->gc_count += sizeof(value); |
207 |
|
if(env->gc_ref->item->type==string) |
208 |
|
env->gc_count += strlen(env->gc_ref->item->content.ptr); |
209 |
|
|
|
/* Keep values */ |
|
210 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
211 |
env->gc_ref->next= new_head; |
env->gc_ref->next= new_head; |
212 |
new_head= env->gc_ref; |
new_head= env->gc_ref; |
213 |
new_head->item->gc.flag.mark= 0; |
new_head->item->gc.flag.mark= 0; |
214 |
env->gc_ref= titem; |
env->gc_ref= titem; |
|
env->gc_count++; |
|
215 |
} |
} |
216 |
|
|
217 |
env->gc_limit= env->gc_count*2; |
if (env->gc_limit < env->gc_count*2) |
218 |
|
env->gc_limit= env->gc_count*2; |
219 |
|
|
220 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
221 |
|
|
222 |
|
if(env->interactive) |
223 |
|
printf("done\n"); |
224 |
|
|
225 |
} |
} |
226 |
|
|
227 |
/* Protect values from GC */ |
/* Protect values from GC */ |
228 |
void protect(value *val) |
void protect(value *val) |
229 |
{ |
{ |
230 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.protect) |
|
|
|
|
if(val->gc.flag.protect) |
|
231 |
return; |
return; |
232 |
|
|
233 |
val->gc.flag.protect= 1; |
val->gc.flag.protect= 1; |
234 |
|
|
235 |
if(val->type==list) { |
if(val->type==tcons && val->content.c!=NULL) { |
236 |
iterator= val->content.ptr; |
protect(val->content.c->car); |
237 |
|
protect(val->content.c->cdr); |
|
while(iterator!=NULL) { |
|
|
protect(iterator->item); |
|
|
iterator= iterator->next; |
|
|
} |
|
238 |
} |
} |
239 |
} |
} |
240 |
|
|
241 |
/* Unprotect values from GC */ |
/* Unprotect values from GC */ |
242 |
void unprotect(value *val) |
void unprotect(value *val) |
243 |
{ |
{ |
244 |
stackitem *iterator; |
if(val==NULL || !(val->gc.flag.protect)) |
|
|
|
|
if(!(val->gc.flag.protect)) |
|
245 |
return; |
return; |
246 |
|
|
247 |
val->gc.flag.protect= 0; |
val->gc.flag.protect= 0; |
248 |
|
|
249 |
if(val->type==list) { |
if(val->type==tcons && val->content.c!=NULL) { |
250 |
iterator= val->content.ptr; |
unprotect(val->content.c->car); |
251 |
|
unprotect(val->content.c->cdr); |
|
while(iterator!=NULL) { |
|
|
unprotect(iterator->item); |
|
|
iterator= iterator->next; |
|
|
} |
|
252 |
} |
} |
253 |
} |
} |
254 |
|
|
255 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
256 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
257 |
{ |
{ |
258 |
stackitem *new_item= malloc(sizeof(stackitem)); |
cons *new_item= malloc(sizeof(cons)); |
259 |
new_item->item= val; |
new_item->car= val; |
260 |
new_item->next= env->head; |
|
261 |
|
new_item->cdr= new_val(env); |
262 |
|
new_item->cdr->type= tcons; |
263 |
|
new_item->cdr->content.c= env->head; |
264 |
env->head= new_item; |
env->head= new_item; |
265 |
} |
} |
266 |
|
|
290 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
291 |
{ |
{ |
292 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
293 |
|
int length= strlen(in_string)+1; |
294 |
|
|
295 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(length); |
296 |
|
env->gc_count += length; |
297 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
298 |
new_value->type= string; |
new_value->type= string; |
299 |
|
|
330 |
return; |
return; |
331 |
} |
} |
332 |
|
|
333 |
if(env->head->item->type!=string) { |
if(env->head->car->type!=string) { |
334 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
335 |
env->err= 2; |
env->err= 2; |
336 |
return; |
return; |
337 |
} |
} |
338 |
|
|
339 |
new_string= mangle_str((const char *)(env->head->item->content.ptr)); |
new_string= mangle_str((const char *)(env->head->car->content.ptr)); |
340 |
|
|
341 |
toss(env); |
toss(env); |
342 |
if(env->err) return; |
if(env->err) return; |
427 |
env->err=1; |
env->err=1; |
428 |
return; |
return; |
429 |
} |
} |
430 |
typenum=env->head->item->type; |
typenum=env->head->car->type; |
431 |
toss(env); |
toss(env); |
432 |
switch(typenum){ |
switch(typenum){ |
433 |
case integer: |
case integer: |
445 |
case func: |
case func: |
446 |
push_sym(env, "function"); |
push_sym(env, "function"); |
447 |
break; |
break; |
448 |
case list: |
case tcons: |
449 |
push_sym(env, "list"); |
push_sym(env, "list"); |
450 |
break; |
break; |
451 |
} |
} |
452 |
} |
} |
453 |
|
|
454 |
/* Prints the top element of the stack. */ |
/* Prints the top element of the stack. */ |
455 |
void print_h(stackitem *stack_head, int noquote) |
void print_h(cons *stack_head, int noquote) |
456 |
{ |
{ |
457 |
switch(stack_head->item->type) { |
switch(stack_head->car->type) { |
458 |
case integer: |
case integer: |
459 |
printf("%d", stack_head->item->content.i); |
printf("%d", stack_head->car->content.i); |
460 |
break; |
break; |
461 |
case tfloat: |
case tfloat: |
462 |
printf("%f", stack_head->item->content.f); |
printf("%f", stack_head->car->content.f); |
463 |
break; |
break; |
464 |
case string: |
case string: |
465 |
if(noquote) |
if(noquote) |
466 |
printf("%s", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)stack_head->car->content.ptr); |
467 |
else |
else |
468 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("\"%s\"", (char*)stack_head->car->content.ptr); |
469 |
break; |
break; |
470 |
case symb: |
case symb: |
471 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", ((symbol *)(stack_head->car->content.ptr))->id); |
472 |
break; |
break; |
473 |
case func: |
case func: |
474 |
printf("#<function %p>", (funcp)(stack_head->item->content.ptr)); |
printf("#<function %p>", (funcp)(stack_head->car->content.ptr)); |
475 |
break; |
break; |
476 |
case list: |
case tcons: |
477 |
/* A list is just a stack, so make stack_head point to it */ |
/* A list is just a stack, so make stack_head point to it */ |
478 |
stack_head=(stackitem *)(stack_head->item->content.ptr); |
stack_head=(cons*)(stack_head->car->content.ptr); |
479 |
printf("[ "); |
printf("[ "); |
480 |
while(stack_head != NULL) { |
while(stack_head != NULL) { |
481 |
print_h(stack_head, noquote); |
print_h(stack_head, noquote); |
482 |
printf(" "); |
printf(" "); |
483 |
stack_head=stack_head->next; |
stack_head= stack_head->cdr->content.c; |
484 |
} |
} |
485 |
printf("]"); |
printf("]"); |
486 |
break; |
break; |
525 |
} |
} |
526 |
|
|
527 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
528 |
void print_st(stackitem *stack_head, long counter) |
void print_st(cons *stack_head, long counter) |
529 |
{ |
{ |
530 |
if(stack_head->next != NULL) |
if(stack_head->cdr->content.c != NULL) |
531 |
print_st(stack_head->next, counter+1); |
print_st(stack_head->cdr->content.c, counter+1); |
532 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
533 |
print_h(stack_head, 0); |
print_h(stack_head, 0); |
534 |
nl(); |
nl(); |
548 |
/* Swap the two top elements on the stack. */ |
/* Swap the two top elements on the stack. */ |
549 |
extern void swap(environment *env) |
extern void swap(environment *env) |
550 |
{ |
{ |
551 |
stackitem *temp= env->head; |
cons *temp= env->head; |
552 |
|
|
553 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
554 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
555 |
env->err=1; |
env->err=1; |
556 |
return; |
return; |
557 |
} |
} |
558 |
|
|
559 |
env->head= env->head->next; |
env->head= env->head->cdr->content.c; |
560 |
temp->next= env->head->next; |
temp->cdr->content.c= env->head->cdr->content.c; |
561 |
env->head->next= temp; |
env->head->cdr->content.c= temp; |
562 |
} |
} |
563 |
|
|
564 |
/* Rotate the first three elements on the stack. */ |
/* Rotate the first three elements on the stack. */ |
565 |
extern void rot(environment *env) |
extern void rot(environment *env) |
566 |
{ |
{ |
567 |
stackitem *temp= env->head; |
cons *temp= env->head; |
568 |
|
|
569 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || env->head->cdr->content.c==NULL |
570 |
|| env->head->next->next==NULL) { |
|| env->head->cdr->content.c->cdr->content.c==NULL) { |
571 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
572 |
env->err=1; |
env->err=1; |
573 |
return; |
return; |
574 |
} |
} |
575 |
|
|
576 |
env->head= env->head->next->next; |
env->head= env->head->cdr->content.c->cdr->content.c; |
577 |
temp->next->next= env->head->next; |
temp->cdr->content.c->cdr->content.c= env->head->cdr->content.c; |
578 |
env->head->next= temp; |
env->head->cdr->content.c= temp; |
579 |
} |
} |
580 |
|
|
581 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
583 |
{ |
{ |
584 |
value *val; |
value *val; |
585 |
|
|
586 |
if(env->head == NULL) { |
if(env->head==NULL) { |
587 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
588 |
env->err=1; |
env->err= 1; |
589 |
return; |
return; |
590 |
} |
} |
591 |
|
|
592 |
if(env->head->item->type!=symb) { |
if(env->head->car->type!=symb) { |
593 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
594 |
env->err=2; |
env->err= 2; |
595 |
return; |
return; |
596 |
} |
} |
597 |
|
|
598 |
val=((symbol *)(env->head->item->content.ptr))->val; |
val= ((symbol *)(env->head->car->content.ptr))->val; |
599 |
if(val == NULL){ |
if(val == NULL){ |
600 |
printerr("Unbound Variable"); |
printerr("Unbound Variable"); |
601 |
env->err=3; |
env->err= 3; |
602 |
return; |
return; |
603 |
} |
} |
604 |
protect(val); |
protect(val); |
615 |
{ |
{ |
616 |
funcp in_func; |
funcp in_func; |
617 |
value* temp_val; |
value* temp_val; |
618 |
stackitem* iterator; |
cons* iterator; |
619 |
|
|
620 |
eval_start: |
eval_start: |
621 |
|
|
623 |
|
|
624 |
if(env->head==NULL) { |
if(env->head==NULL) { |
625 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
626 |
env->err=1; |
env->err= 1; |
627 |
return; |
return; |
628 |
} |
} |
629 |
|
|
630 |
switch(env->head->item->type) { |
switch(env->head->car->type) { |
631 |
/* if it's a symbol */ |
/* if it's a symbol */ |
632 |
case symb: |
case symb: |
633 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
634 |
if(env->err) return; |
if(env->err) return; |
635 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(env->head->car->type!=symb){ /* don't recurse symbols */ |
636 |
goto eval_start; |
goto eval_start; |
637 |
} |
} |
638 |
return; |
return; |
639 |
|
|
640 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
641 |
case func: |
case func: |
642 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(env->head->car->content.ptr); |
643 |
toss(env); |
toss(env); |
644 |
if(env->err) return; |
if(env->err) return; |
645 |
return in_func(env); |
return in_func(env); |
646 |
|
|
647 |
/* If it's a list */ |
/* If it's a list */ |
648 |
case list: |
case tcons: |
649 |
temp_val= env->head->item; |
temp_val= env->head->car; |
650 |
protect(temp_val); |
protect(temp_val); |
651 |
|
|
652 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
653 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= (cons*)temp_val->content.ptr; |
654 |
|
|
655 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
656 |
push_val(env, iterator->item); |
push_val(env, iterator->car); |
657 |
|
|
658 |
if(env->head->item->type==symb |
if(env->head->car->type==symb |
659 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& (((symbol*)(env->head->car->content.ptr))->id[0] == ';')) { |
660 |
toss(env); |
toss(env); |
661 |
if(env->err) return; |
if(env->err) return; |
662 |
|
|
663 |
if(iterator->next == NULL){ |
if(iterator->cdr->content.c==NULL){ |
664 |
goto eval_start; |
goto eval_start; |
665 |
} |
} |
666 |
eval(env); |
eval(env); |
667 |
if(env->err) return; |
if(env->err) return; |
668 |
} |
} |
669 |
iterator= iterator->next; |
iterator= iterator->cdr->content.c; |
670 |
} |
} |
671 |
unprotect(temp_val); |
unprotect(temp_val); |
672 |
return; |
return; |
679 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
680 |
extern void rev(environment *env) |
extern void rev(environment *env) |
681 |
{ |
{ |
682 |
stackitem *old_head, *new_head, *item; |
cons *old_head, *new_head, *item; |
683 |
|
|
684 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
685 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
687 |
return; |
return; |
688 |
} |
} |
689 |
|
|
690 |
if(env->head->item->type!=list) { |
if(env->head->car->type!=tcons) { |
691 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
692 |
env->err= 2; |
env->err= 2; |
693 |
return; |
return; |
694 |
} |
} |
695 |
|
|
696 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= (cons*)(env->head->car->content.ptr); |
697 |
new_head= NULL; |
new_head= NULL; |
698 |
while(old_head != NULL){ |
while(old_head!=NULL) { |
699 |
item= old_head; |
item= old_head; |
700 |
old_head= old_head->next; |
old_head= old_head->cdr->content.c; |
701 |
item->next= new_head; |
item->cdr->content.c= new_head; |
702 |
new_head= item; |
new_head= item; |
703 |
} |
} |
704 |
env->head->item->content.ptr= new_head; |
env->head->car->content.ptr= new_head; |
705 |
} |
} |
706 |
|
|
707 |
/* Make a list. */ |
/* Make a list. */ |
708 |
extern void pack(environment *env) |
extern void pack(environment *env) |
709 |
{ |
{ |
710 |
stackitem *iterator, *temp; |
cons *iterator, *temp; |
711 |
value *pack; |
value *pack; |
712 |
|
|
713 |
iterator= env->head; |
iterator= env->head; |
715 |
protect(pack); |
protect(pack); |
716 |
|
|
717 |
if(iterator==NULL |
if(iterator==NULL |
718 |
|| (iterator->item->type==symb |
|| (iterator->car->type==symb |
719 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& ((symbol*)(iterator->car->content.ptr))->id[0]=='[')) { |
720 |
temp= NULL; |
temp= NULL; |
721 |
toss(env); |
toss(env); |
722 |
} else { |
} else { |
723 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
724 |
while(iterator->next!=NULL |
while(iterator->cdr->content.c!=NULL |
725 |
&& (iterator->next->item->type!=symb |
&& (iterator->cdr->content.c->car->type!=symb |
726 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| ((symbol*)(iterator->cdr->content.c->car->content.ptr))->id[0] |
727 |
iterator= iterator->next; |
!='[')) |
728 |
|
iterator= iterator->cdr->content.c; |
729 |
|
|
730 |
/* Extract list */ |
/* Extract list */ |
731 |
temp= env->head; |
temp= env->head; |
732 |
env->head= iterator->next; |
env->head= iterator->cdr->content.c; |
733 |
iterator->next= NULL; |
iterator->cdr->content.c= NULL; |
734 |
|
|
735 |
pack->type= list; |
pack->type= tcons; |
736 |
pack->content.ptr= temp; |
pack->content.ptr= temp; |
737 |
|
|
738 |
if(env->head!=NULL) |
if(env->head!=NULL) |
750 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
751 |
extern void expand(environment *env) |
extern void expand(environment *env) |
752 |
{ |
{ |
753 |
stackitem *temp, *new_head; |
cons *temp, *new_head; |
754 |
|
|
755 |
/* Is top element a list? */ |
/* Is top element a list? */ |
756 |
if(env->head==NULL) { |
if(env->head==NULL) { |
758 |
env->err= 1; |
env->err= 1; |
759 |
return; |
return; |
760 |
} |
} |
761 |
if(env->head->item->type!=list) { |
if(env->head->car->type!=tcons) { |
762 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
763 |
env->err= 2; |
env->err= 2; |
764 |
return; |
return; |
770 |
return; |
return; |
771 |
|
|
772 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
773 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= env->head->car->content.ptr; |
774 |
|
|
775 |
toss(env); |
toss(env); |
776 |
|
|
777 |
/* Find the end of the list */ |
/* Find the end of the list */ |
778 |
while(temp->next!=NULL) |
while(temp->cdr->content.c!=NULL) |
779 |
temp= temp->next; |
temp= temp->cdr->content.c; |
780 |
|
|
781 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
782 |
temp->next= env->head; |
temp->cdr->content.c= env->head; |
783 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
784 |
|
|
785 |
} |
} |
788 |
extern void eq(environment *env) |
extern void eq(environment *env) |
789 |
{ |
{ |
790 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
791 |
|
|
792 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
793 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
794 |
env->err= 1; |
env->err= 1; |
795 |
return; |
return; |
796 |
} |
} |
797 |
|
|
798 |
left= env->head->item->content.ptr; |
left= env->head->car->content.ptr; |
799 |
swap(env); |
swap(env); |
800 |
right= env->head->item->content.ptr; |
right= env->head->car->content.ptr; |
|
result= (left==right); |
|
|
|
|
801 |
toss(env); toss(env); |
toss(env); toss(env); |
802 |
push_int(env, result); |
|
803 |
|
push_int(env, left==right); |
804 |
} |
} |
805 |
|
|
806 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
808 |
{ |
{ |
809 |
int val; |
int val; |
810 |
|
|
811 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
812 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
813 |
env->err= 1; |
env->err= 1; |
814 |
return; |
return; |
815 |
} |
} |
816 |
|
|
817 |
if(env->head->item->type!=integer) { |
if(env->head->car->type!=integer) { |
818 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
819 |
env->err= 2; |
env->err= 2; |
820 |
return; |
return; |
821 |
} |
} |
822 |
|
|
823 |
val= env->head->item->content.i; |
val= env->head->car->content.i; |
824 |
toss(env); |
toss(env); |
825 |
push_int(env, !val); |
push_int(env, !val); |
826 |
} |
} |
839 |
symbol *sym; |
symbol *sym; |
840 |
|
|
841 |
/* 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 */ |
842 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
843 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
844 |
env->err= 1; |
env->err= 1; |
845 |
return; |
return; |
846 |
} |
} |
847 |
|
|
848 |
if(env->head->item->type!=symb) { |
if(env->head->car->type!=symb) { |
849 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
850 |
env->err= 2; |
env->err= 2; |
851 |
return; |
return; |
852 |
} |
} |
853 |
|
|
854 |
/* long names are a pain */ |
/* long names are a pain */ |
855 |
sym= env->head->item->content.ptr; |
sym= env->head->car->content.ptr; |
856 |
|
|
857 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
858 |
sym->val= env->head->next->item; |
sym->val= env->head->cdr->content.c->car; |
859 |
|
|
860 |
toss(env); toss(env); |
toss(env); toss(env); |
861 |
} |
} |
924 |
extern void forget(environment *env) |
extern void forget(environment *env) |
925 |
{ |
{ |
926 |
char* sym_id; |
char* sym_id; |
927 |
stackitem *stack_head= env->head; |
cons *stack_head= env->head; |
928 |
|
|
929 |
if(stack_head==NULL) { |
if(stack_head==NULL) { |
930 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
931 |
env->err=1; |
env->err= 1; |
932 |
return; |
return; |
933 |
} |
} |
934 |
|
|
935 |
if(stack_head->item->type!=symb) { |
if(stack_head->car->type!=symb) { |
936 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
937 |
env->err=2; |
env->err= 2; |
938 |
return; |
return; |
939 |
} |
} |
940 |
|
|
941 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= ((symbol*)(stack_head->car->content.ptr))->id; |
942 |
toss(env); |
toss(env); |
943 |
|
|
944 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1010 |
if (myenv.err==4) { |
if (myenv.err==4) { |
1011 |
return EXIT_SUCCESS; /* EOF */ |
return EXIT_SUCCESS; /* EOF */ |
1012 |
} else if(myenv.head!=NULL |
} else if(myenv.head!=NULL |
1013 |
&& myenv.head->item->type==symb |
&& myenv.head->car->type==symb |
1014 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& ((symbol*)(myenv.head->car->content.ptr))->id[0]==';') { |
1015 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1016 |
eval(&myenv); |
eval(&myenv); |
1017 |
} |
} |
1030 |
char* new_string; |
char* new_string; |
1031 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1032 |
|
|
1033 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1034 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1035 |
env->err= 1; |
env->err= 1; |
1036 |
return; |
return; |
1037 |
} |
} |
1038 |
|
|
1039 |
if(env->head->item->type==string |
if(env->head->car->type==string |
1040 |
&& env->head->next->item->type==string) { |
&& env->head->cdr->content.c->car->type==string) { |
1041 |
a_val= env->head->item; |
a_val= env->head->car; |
1042 |
b_val= env->head->next->item; |
b_val= env->head->cdr->content.c->car; |
1043 |
protect(a_val); protect(b_val); |
protect(a_val); protect(b_val); |
1044 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1045 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1054 |
return; |
return; |
1055 |
} |
} |
1056 |
|
|
1057 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1058 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1059 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
1060 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1061 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
1062 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1063 |
push_int(env, b+a); |
push_int(env, b+a); |
1064 |
|
|
1065 |
return; |
return; |
1066 |
} |
} |
1067 |
|
|
1068 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1069 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1070 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1071 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1072 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1073 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1074 |
push_float(env, fb+fa); |
push_float(env, fb+fa); |
1075 |
|
|
1076 |
return; |
return; |
1077 |
} |
} |
1078 |
|
|
1079 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1080 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1081 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1082 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1083 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1084 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1085 |
push_float(env, b+fa); |
push_float(env, b+fa); |
1086 |
|
|
1087 |
return; |
return; |
1088 |
} |
} |
1089 |
|
|
1090 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1091 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1092 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1093 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1094 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1095 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1096 |
push_float(env, fb+a); |
push_float(env, fb+a); |
1097 |
|
|
1108 |
int a, b; |
int a, b; |
1109 |
float fa, fb; |
float fa, fb; |
1110 |
|
|
1111 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1112 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1113 |
env->err=1; |
env->err=1; |
1114 |
return; |
return; |
1115 |
} |
} |
1116 |
|
|
1117 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1118 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1119 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
1120 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1121 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
1122 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1123 |
push_int(env, b-a); |
push_int(env, b-a); |
1124 |
|
|
1125 |
return; |
return; |
1126 |
} |
} |
1127 |
|
|
1128 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1129 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1130 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1131 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1132 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1133 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1134 |
push_float(env, fb-fa); |
push_float(env, fb-fa); |
1135 |
|
|
1136 |
return; |
return; |
1137 |
} |
} |
1138 |
|
|
1139 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1140 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1141 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1142 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1143 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1144 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1145 |
push_float(env, b-fa); |
push_float(env, b-fa); |
1146 |
|
|
1147 |
return; |
return; |
1148 |
} |
} |
1149 |
|
|
1150 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1151 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1152 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1153 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1154 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1155 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1156 |
push_float(env, fb-a); |
push_float(env, fb-a); |
1157 |
|
|
1168 |
int a, b; |
int a, b; |
1169 |
float fa, fb; |
float fa, fb; |
1170 |
|
|
1171 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1172 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1173 |
env->err=1; |
env->err= 1; |
1174 |
return; |
return; |
1175 |
} |
} |
1176 |
|
|
1177 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1178 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1179 |
a=env->head->item->content.i; |
a=env->head->car->content.i; |
1180 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1181 |
b=env->head->item->content.i; |
b=env->head->car->content.i; |
1182 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1183 |
push_int(env, b>a); |
push_int(env, b>a); |
1184 |
|
|
1185 |
return; |
return; |
1186 |
} |
} |
1187 |
|
|
1188 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1189 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1190 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1191 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1192 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1193 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1194 |
push_int(env, fb>fa); |
push_int(env, fb>fa); |
1195 |
|
|
1196 |
return; |
return; |
1197 |
} |
} |
1198 |
|
|
1199 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1200 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1201 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1202 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1203 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1204 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1205 |
push_int(env, b>fa); |
push_int(env, b>fa); |
1206 |
|
|
1207 |
return; |
return; |
1208 |
} |
} |
1209 |
|
|
1210 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1211 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1212 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1213 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1214 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1215 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1216 |
push_int(env, fb>a); |
push_int(env, fb>a); |
1217 |
|
|
1246 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1247 |
value *copy_val(environment *env, value *old_value) |
value *copy_val(environment *env, value *old_value) |
1248 |
{ |
{ |
1249 |
stackitem *old_item, *new_item, *prev_item; |
cons *old_item, *new_item, *prev_item; |
1250 |
value *new_value; |
value *new_value; |
1251 |
|
|
1252 |
protect(old_value); |
protect(old_value); |
1265 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1266 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1267 |
break; |
break; |
1268 |
case list: |
case tcons: |
1269 |
new_value->content.ptr= NULL; |
new_value->content.ptr= NULL; |
1270 |
|
|
1271 |
prev_item= NULL; |
prev_item= NULL; |
1272 |
old_item= (stackitem*)(old_value->content.ptr); |
old_item= (cons*)(old_value->content.ptr); |
1273 |
|
|
1274 |
while(old_item != NULL) { /* While list is not empty */ |
while(old_item != NULL) { /* While list is not empty */ |
1275 |
new_item= malloc(sizeof(stackitem)); |
new_item= malloc(sizeof(cons)); |
1276 |
new_item->item= copy_val(env, old_item->item); /* recurse */ |
new_item->car= copy_val(env, old_item->car); /* recurse */ |
1277 |
new_item->next= NULL; |
new_item->cdr= new_val(env); |
1278 |
|
new_item->cdr->type= tcons; |
1279 |
|
new_item->cdr->content.c= NULL; |
1280 |
if(prev_item != NULL) /* If this wasn't the first item */ |
if(prev_item != NULL) /* If this wasn't the first item */ |
1281 |
prev_item->next= new_item; /* point the previous item to the |
prev_item->cdr->content.c= new_item; /* point the previous item to the |
1282 |
new item */ |
new item */ |
1283 |
else |
else |
1284 |
new_value->content.ptr= new_item; |
new_value->content.ptr= new_item; |
1285 |
old_item= old_item->next; |
old_item= old_item->cdr->content.c; |
1286 |
prev_item= new_item; |
prev_item= new_item; |
1287 |
} |
} |
1288 |
break; |
break; |
1296 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1297 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1298 |
{ |
{ |
1299 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1300 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1301 |
env->err= 1; |
env->err= 1; |
1302 |
return; |
return; |
1303 |
} |
} |
1304 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, env->head->car)); |
1305 |
} |
} |
1306 |
|
|
1307 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1309 |
{ |
{ |
1310 |
int truth; |
int truth; |
1311 |
|
|
1312 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1313 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1314 |
env->err= 1; |
env->err= 1; |
1315 |
return; |
return; |
1316 |
} |
} |
1317 |
|
|
1318 |
if(env->head->next->item->type != integer) { |
if(env->head->cdr->content.c->car->type != integer) { |
1319 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1320 |
env->err=2; |
env->err= 2; |
1321 |
return; |
return; |
1322 |
} |
} |
1323 |
|
|
1324 |
swap(env); |
swap(env); |
1325 |
if(env->err) return; |
if(env->err) return; |
1326 |
|
|
1327 |
truth=env->head->item->content.i; |
truth=env->head->car->content.i; |
1328 |
|
|
1329 |
toss(env); |
toss(env); |
1330 |
if(env->err) return; |
if(env->err) return; |
1340 |
{ |
{ |
1341 |
int truth; |
int truth; |
1342 |
|
|
1343 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head==NULL || env->head->cdr->content.c==NULL |
1344 |
|| env->head->next->next==NULL) { |
|| env->head->cdr->content.c->cdr->content.c==NULL) { |
1345 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1346 |
env->err=1; |
env->err= 1; |
1347 |
return; |
return; |
1348 |
} |
} |
1349 |
|
|
1350 |
if(env->head->next->next->item->type != integer) { |
if(env->head->cdr->content.c->cdr->content.c->car->type!=integer) { |
1351 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1352 |
env->err=2; |
env->err= 2; |
1353 |
return; |
return; |
1354 |
} |
} |
1355 |
|
|
1356 |
rot(env); |
rot(env); |
1357 |
if(env->err) return; |
if(env->err) return; |
1358 |
|
|
1359 |
truth=env->head->item->content.i; |
truth= env->head->car->content.i; |
1360 |
|
|
1361 |
toss(env); |
toss(env); |
1362 |
if(env->err) return; |
if(env->err) return; |
1377 |
int truth; |
int truth; |
1378 |
value *loop, *test; |
value *loop, *test; |
1379 |
|
|
1380 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1381 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1382 |
env->err=1; |
env->err= 1; |
1383 |
return; |
return; |
1384 |
} |
} |
1385 |
|
|
1386 |
loop= env->head->item; |
loop= env->head->car; |
1387 |
protect(loop); |
protect(loop); |
1388 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1389 |
|
|
1390 |
test= env->head->item; |
test= env->head->car; |
1391 |
protect(test); |
protect(test); |
1392 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1393 |
|
|
1395 |
push_val(env, test); |
push_val(env, test); |
1396 |
eval(env); |
eval(env); |
1397 |
|
|
1398 |
if(env->head->item->type != integer) { |
if(env->head->car->type != integer) { |
1399 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1400 |
env->err= 2; |
env->err= 2; |
1401 |
return; |
return; |
1402 |
} |
} |
1403 |
|
|
1404 |
truth= env->head->item->content.i; |
truth= env->head->car->content.i; |
1405 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1406 |
|
|
1407 |
if(truth) { |
if(truth) { |
1423 |
value *loop; |
value *loop; |
1424 |
int foo1, foo2; |
int foo1, foo2; |
1425 |
|
|
1426 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || env->head->cdr->content.c==NULL |
1427 |
|| env->head->next->next==NULL) { |
|| env->head->cdr->content.c->cdr->content.c==NULL) { |
1428 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1429 |
env->err= 1; |
env->err= 1; |
1430 |
return; |
return; |
1431 |
} |
} |
1432 |
|
|
1433 |
if(env->head->next->item->type!=integer |
if(env->head->cdr->content.c->car->type!=integer |
1434 |
|| env->head->next->next->item->type!=integer) { |
|| env->head->cdr->content.c->cdr->content.c->car->type!=integer) { |
1435 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1436 |
env->err= 2; |
env->err= 2; |
1437 |
return; |
return; |
1438 |
} |
} |
1439 |
|
|
1440 |
loop= env->head->item; |
loop= env->head->car; |
1441 |
protect(loop); |
protect(loop); |
1442 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1443 |
|
|
1444 |
foo2= env->head->item->content.i; |
foo2= env->head->car->content.i; |
1445 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1446 |
|
|
1447 |
foo1= env->head->item->content.i; |
foo1= env->head->car->content.i; |
1448 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1449 |
|
|
1450 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1469 |
extern void foreach(environment *env) |
extern void foreach(environment *env) |
1470 |
{ |
{ |
1471 |
value *loop, *foo; |
value *loop, *foo; |
1472 |
stackitem *iterator; |
cons *iterator; |
1473 |
|
|
1474 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1475 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1476 |
env->err= 1; |
env->err= 1; |
1477 |
return; |
return; |
1478 |
} |
} |
1479 |
|
|
1480 |
if(env->head->next->item->type != list) { |
if(env->head->cdr->content.c->car->type!=tcons) { |
1481 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1482 |
env->err= 2; |
env->err= 2; |
1483 |
return; |
return; |
1484 |
} |
} |
1485 |
|
|
1486 |
loop= env->head->item; |
loop= env->head->car; |
1487 |
protect(loop); |
protect(loop); |
1488 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1489 |
|
|
1490 |
foo= env->head->item; |
foo= env->head->car; |
1491 |
protect(foo); |
protect(foo); |
1492 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1493 |
|
|
1494 |
iterator= foo->content.ptr; |
iterator= foo->content.ptr; |
1495 |
|
|
1496 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
1497 |
push_val(env, iterator->item); |
push_val(env, iterator->car); |
1498 |
push_val(env, loop); |
push_val(env, loop); |
1499 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1500 |
iterator= iterator->next; |
iterator= iterator->cdr->content.c; |
1501 |
} |
} |
1502 |
unprotect(loop); unprotect(foo); |
unprotect(loop); unprotect(foo); |
1503 |
} |
} |
1506 |
extern void to(environment *env) |
extern void to(environment *env) |
1507 |
{ |
{ |
1508 |
int ending, start, i; |
int ending, start, i; |
1509 |
stackitem *iterator, *temp; |
cons *iterator, *temp; |
1510 |
value *pack; |
value *pack; |
1511 |
|
|
1512 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1513 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1514 |
env->err=1; |
env->err= 1; |
1515 |
return; |
return; |
1516 |
} |
} |
1517 |
|
|
1518 |
if(env->head->item->type!=integer |
if(env->head->car->type!=integer |
1519 |
|| env->head->next->item->type!=integer) { |
|| env->head->cdr->content.c->car->type!=integer) { |
1520 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1521 |
env->err=2; |
env->err= 2; |
1522 |
return; |
return; |
1523 |
} |
} |
1524 |
|
|
1525 |
ending= env->head->item->content.i; |
ending= env->head->car->content.i; |
1526 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1527 |
start= env->head->item->content.i; |
start= env->head->car->content.i; |
1528 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1529 |
|
|
1530 |
push_sym(env, "["); |
push_sym(env, "["); |
1542 |
protect(pack); |
protect(pack); |
1543 |
|
|
1544 |
if(iterator==NULL |
if(iterator==NULL |
1545 |
|| (iterator->item->type==symb |
|| (iterator->car->type==symb |
1546 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& ((symbol*)(iterator->car->content.ptr))->id[0]=='[')) { |
1547 |
temp= NULL; |
temp= NULL; |
1548 |
toss(env); |
toss(env); |
1549 |
} else { |
} else { |
1550 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
1551 |
while(iterator->next!=NULL |
while(iterator->cdr->content.c!=NULL |
1552 |
&& (iterator->next->item->type!=symb |
&& (iterator->cdr->content.c->car->type!=symb |
1553 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| ((symbol*)(iterator->cdr->content.c->car->content.ptr))->id[0] |
1554 |
iterator= iterator->next; |
!='[')) |
1555 |
|
iterator= iterator->cdr->content.c; |
1556 |
|
|
1557 |
/* Extract list */ |
/* Extract list */ |
1558 |
temp= env->head; |
temp= env->head; |
1559 |
env->head= iterator->next; |
env->head= iterator->cdr->content.c; |
1560 |
iterator->next= NULL; |
iterator->cdr->content.c= NULL; |
1561 |
|
|
1562 |
pack->type= list; |
pack->type= tcons; |
1563 |
pack->content.ptr= temp; |
pack->content.ptr= temp; |
1564 |
|
|
1565 |
if(env->head!=NULL) |
if(env->head!=NULL) |
1609 |
} |
} |
1610 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1611 |
|
|
1612 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(env->head->car->content.ptr))[0]=='\0'){ |
1613 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1614 |
return; |
return; |
1615 |
} |
} |
1616 |
|
|
1617 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(env->head->car->content.ptr)+1); |
1618 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1619 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, env->head->car->content.ptr); |
1620 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1621 |
} |
} |
1622 |
|
|
1669 |
{ |
{ |
1670 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1671 |
|
|
1672 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1673 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1674 |
env->err=1; |
env->err= 1; |
1675 |
return; |
return; |
1676 |
} |
} |
1677 |
|
|
1678 |
if(env->head->item->type!=integer |
if(env->head->car->type!=integer |
1679 |
|| env->head->next->item->type!=integer) { |
|| env->head->cdr->content.c->car->type!=integer) { |
1680 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1681 |
env->err=2; |
env->err= 2; |
1682 |
return; |
return; |
1683 |
} |
} |
1684 |
|
|
1685 |
dur=env->head->item->content.i; |
dur= env->head->car->content.i; |
1686 |
toss(env); |
toss(env); |
1687 |
freq=env->head->item->content.i; |
freq= env->head->car->content.i; |
1688 |
toss(env); |
toss(env); |
1689 |
|
|
1690 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1691 |
length */ |
length */ |
1692 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1693 |
timer ticks */ |
timer ticks */ |
1694 |
|
|
1695 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1696 |
|
|
1697 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1698 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1699 |
case 0: |
case 0: |
1700 |
usleep(dur); |
usleep(dur); |
1701 |
return; |
return; |
1702 |
case -1: |
case -1: |
1703 |
perror("beep"); |
perror("beep"); |
1704 |
env->err=5; |
env->err= 5; |
1705 |
return; |
return; |
1706 |
default: |
default: |
1707 |
abort(); |
abort(); |
1713 |
{ |
{ |
1714 |
int dur; |
int dur; |
1715 |
|
|
1716 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1717 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1718 |
env->err=1; |
env->err= 1; |
1719 |
return; |
return; |
1720 |
} |
} |
1721 |
|
|
1722 |
if(env->head->item->type!=integer) { |
if(env->head->car->type!=integer) { |
1723 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1724 |
env->err=2; |
env->err= 2; |
1725 |
return; |
return; |
1726 |
} |
} |
1727 |
|
|
1728 |
dur=env->head->item->content.i; |
dur=env->head->car->content.i; |
1729 |
toss(env); |
toss(env); |
1730 |
|
|
1731 |
usleep(dur); |
usleep(dur); |
2022 |
int a, b; |
int a, b; |
2023 |
float fa, fb; |
float fa, fb; |
2024 |
|
|
2025 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2026 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2027 |
env->err=1; |
env->err= 1; |
2028 |
return; |
return; |
2029 |
} |
} |
2030 |
|
|
2031 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2032 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2033 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
2034 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2035 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
2036 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2037 |
push_int(env, b*a); |
push_int(env, b*a); |
2038 |
|
|
2039 |
return; |
return; |
2040 |
} |
} |
2041 |
|
|
2042 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2043 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2044 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2045 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2046 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2047 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2048 |
push_float(env, fb*fa); |
push_float(env, fb*fa); |
2049 |
|
|
2050 |
return; |
return; |
2051 |
} |
} |
2052 |
|
|
2053 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2054 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2055 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2056 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2057 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2058 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2059 |
push_float(env, b*fa); |
push_float(env, b*fa); |
2060 |
|
|
2061 |
return; |
return; |
2062 |
} |
} |
2063 |
|
|
2064 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2065 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2066 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2067 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2068 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2069 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2070 |
push_float(env, fb*a); |
push_float(env, fb*a); |
2071 |
|
|
2073 |
} |
} |
2074 |
|
|
2075 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2076 |
env->err=2; |
env->err= 2; |
2077 |
} |
} |
2078 |
|
|
2079 |
/* "/" */ |
/* "/" */ |
2082 |
int a, b; |
int a, b; |
2083 |
float fa, fb; |
float fa, fb; |
2084 |
|
|
2085 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2086 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2087 |
env->err=1; |
env->err= 1; |
2088 |
return; |
return; |
2089 |
} |
} |
2090 |
|
|
2091 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2092 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2093 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
2094 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2095 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
2096 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2097 |
push_float(env, b/a); |
push_float(env, b/a); |
2098 |
|
|
2099 |
return; |
return; |
2100 |
} |
} |
2101 |
|
|
2102 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2103 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2104 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2105 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2106 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2107 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2108 |
push_float(env, fb/fa); |
push_float(env, fb/fa); |
2109 |
|
|
2110 |
return; |
return; |
2111 |
} |
} |
2112 |
|
|
2113 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2114 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2115 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2116 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2117 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2118 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2119 |
push_float(env, b/fa); |
push_float(env, b/fa); |
2120 |
|
|
2121 |
return; |
return; |
2122 |
} |
} |
2123 |
|
|
2124 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2125 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2126 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2127 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2128 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2129 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2130 |
push_float(env, fb/a); |
push_float(env, fb/a); |
2131 |
|
|
2133 |
} |
} |
2134 |
|
|
2135 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2136 |
env->err=2; |
env->err= 2; |
2137 |
} |
} |
2138 |
|
|
2139 |
/* "mod" */ |
/* "mod" */ |
2141 |
{ |
{ |
2142 |
int a, b; |
int a, b; |
2143 |
|
|
2144 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2145 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2146 |
env->err= 1; |
env->err= 1; |
2147 |
return; |
return; |
2148 |
} |
} |
2149 |
|
|
2150 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2151 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2152 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2153 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2154 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2155 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2156 |
push_int(env, b%a); |
push_int(env, b%a); |
2157 |
|
|
2159 |
} |
} |
2160 |
|
|
2161 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2162 |
env->err=2; |
env->err= 2; |
2163 |
} |
} |
2164 |
|
|
2165 |
/* "div" */ |
/* "div" */ |
2167 |
{ |
{ |
2168 |
int a, b; |
int a, b; |
2169 |
|
|
2170 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2171 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2172 |
env->err= 1; |
env->err= 1; |
2173 |
return; |
return; |
2174 |
} |
} |
2175 |
|
|
2176 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2177 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2178 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2179 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2180 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2181 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2182 |
push_int(env, (int)b/a); |
push_int(env, (int)b/a); |
2183 |
|
|