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_garb= 1; |
nval->gc.flag.mark= 0; |
129 |
|
nval->gc.flag.protect= 0; |
130 |
|
|
131 |
return nval; |
return nval; |
132 |
} |
} |
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_garb==0) |
|
139 |
return; |
return; |
140 |
|
|
141 |
val->gc_garb= 0; |
val->gc.flag.mark= 1; |
|
|
|
|
if(val->type==list) { |
|
|
iterator= val->content.ptr; |
|
142 |
|
|
143 |
while(iterator!=NULL) { |
if(val->type==tcons && val->content.c!=NULL) { |
144 |
gc_mark(iterator->item); |
gc_mark(val->content.c->car); |
145 |
iterator= iterator->next; |
gc_mark(val->content.c->cdr); |
|
} |
|
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 |
|
|
191 |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
192 |
|
|
193 |
if(env->gc_ref->item->gc_garb |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
|
&& !(env->gc_ref->item->gc_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_garb= 1; |
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_protect) |
|
231 |
return; |
return; |
232 |
|
|
233 |
val->gc_protect= 1; |
val->gc.flag.protect= 1; |
|
|
|
|
if(val->type==list) { |
|
|
iterator= val->content.ptr; |
|
234 |
|
|
235 |
while(iterator!=NULL) { |
if(val->type==tcons && val->content.c!=NULL) { |
236 |
protect(iterator->item); |
protect(val->content.c->car); |
237 |
iterator= iterator->next; |
protect(val->content.c->cdr); |
|
} |
|
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_protect)) |
|
245 |
return; |
return; |
246 |
|
|
247 |
val->gc_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=stack_head->car->content.c; |
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.ptr==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; |
if (iterator->cdr->type == tcons) |
670 |
|
iterator= iterator->cdr->content.c; |
671 |
|
else { |
672 |
|
printerr("Bad Argument Type"); /* Improper list */ |
673 |
|
env->err= 2; |
674 |
|
return; |
675 |
|
} |
676 |
} |
} |
677 |
unprotect(temp_val); |
unprotect(temp_val); |
678 |
return; |
return; |
685 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
686 |
extern void rev(environment *env) |
extern void rev(environment *env) |
687 |
{ |
{ |
688 |
stackitem *old_head, *new_head, *item; |
cons *old_head, *new_head, *item; |
689 |
|
|
690 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
691 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
693 |
return; |
return; |
694 |
} |
} |
695 |
|
|
696 |
if(env->head->item->type!=list) { |
if(env->head->car->type!=tcons) { |
697 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
698 |
env->err= 2; |
env->err= 2; |
699 |
return; |
return; |
700 |
} |
} |
701 |
|
|
702 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= env->head->car->content.c; |
703 |
new_head= NULL; |
new_head= NULL; |
704 |
while(old_head != NULL){ |
while(old_head!=NULL) { |
705 |
item= old_head; |
item= old_head; |
706 |
old_head= old_head->next; |
old_head= old_head->cdr->content.c; |
707 |
item->next= new_head; |
item->cdr->content.c= new_head; |
708 |
new_head= item; |
new_head= item; |
709 |
} |
} |
710 |
env->head->item->content.ptr= new_head; |
env->head->car->content.ptr= new_head; |
711 |
} |
} |
712 |
|
|
713 |
/* Make a list. */ |
/* Make a list. */ |
714 |
extern void pack(environment *env) |
extern void pack(environment *env) |
715 |
{ |
{ |
716 |
stackitem *iterator, *temp; |
cons *iterator, *temp; |
717 |
value *pack; |
value *pack; |
718 |
|
|
719 |
iterator= env->head; |
iterator= env->head; |
721 |
protect(pack); |
protect(pack); |
722 |
|
|
723 |
if(iterator==NULL |
if(iterator==NULL |
724 |
|| (iterator->item->type==symb |
|| (iterator->car->type==symb |
725 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& ((symbol*)(iterator->car->content.ptr))->id[0]=='[')) { |
726 |
temp= NULL; |
temp= NULL; |
727 |
toss(env); |
toss(env); |
728 |
} else { |
} else { |
729 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
730 |
while(iterator->next!=NULL |
while(iterator->cdr->content.c!=NULL |
731 |
&& (iterator->next->item->type!=symb |
&& (iterator->cdr->content.c->car->type!=symb |
732 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| ((symbol*)(iterator->cdr->content.c->car->content.ptr))->id[0] |
733 |
iterator= iterator->next; |
!='[')) |
734 |
|
iterator= iterator->cdr->content.c; |
735 |
|
|
736 |
/* Extract list */ |
/* Extract list */ |
737 |
temp= env->head; |
temp= env->head; |
738 |
env->head= iterator->next; |
env->head= iterator->cdr->content.c; |
739 |
iterator->next= NULL; |
iterator->cdr->content.c= NULL; |
740 |
|
|
741 |
pack->type= list; |
pack->type= tcons; |
742 |
pack->content.ptr= temp; |
pack->content.ptr= temp; |
743 |
|
|
744 |
if(env->head!=NULL) |
if(env->head!=NULL) |
756 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
757 |
extern void expand(environment *env) |
extern void expand(environment *env) |
758 |
{ |
{ |
759 |
stackitem *temp, *new_head; |
cons *temp, *new_head; |
760 |
|
|
761 |
/* Is top element a list? */ |
/* Is top element a list? */ |
762 |
if(env->head==NULL) { |
if(env->head==NULL) { |
764 |
env->err= 1; |
env->err= 1; |
765 |
return; |
return; |
766 |
} |
} |
767 |
if(env->head->item->type!=list) { |
if(env->head->car->type!=tcons) { |
768 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
769 |
env->err= 2; |
env->err= 2; |
770 |
return; |
return; |
776 |
return; |
return; |
777 |
|
|
778 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
779 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= env->head->car->content.c; |
780 |
|
|
781 |
toss(env); |
toss(env); |
782 |
|
|
783 |
/* Find the end of the list */ |
/* Find the end of the list */ |
784 |
while(temp->next!=NULL) |
while(temp->cdr->content.ptr != NULL) { |
785 |
temp= temp->next; |
if (temp->cdr->type == tcons) |
786 |
|
temp= temp->cdr->content.c; |
787 |
|
else { |
788 |
|
printerr("Bad Argument Type"); /* Improper list */ |
789 |
|
env->err= 2; |
790 |
|
return; |
791 |
|
} |
792 |
|
} |
793 |
|
|
794 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
795 |
temp->next= env->head; |
temp->cdr->content.c= env->head; |
796 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
797 |
|
|
798 |
} |
} |
801 |
extern void eq(environment *env) |
extern void eq(environment *env) |
802 |
{ |
{ |
803 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
804 |
|
|
805 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
806 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
807 |
env->err= 1; |
env->err= 1; |
808 |
return; |
return; |
809 |
} |
} |
810 |
|
|
811 |
left= env->head->item->content.ptr; |
left= env->head->car->content.ptr; |
812 |
swap(env); |
swap(env); |
813 |
right= env->head->item->content.ptr; |
right= env->head->car->content.ptr; |
|
result= (left==right); |
|
|
|
|
814 |
toss(env); toss(env); |
toss(env); toss(env); |
815 |
push_int(env, result); |
|
816 |
|
push_int(env, left==right); |
817 |
} |
} |
818 |
|
|
819 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
821 |
{ |
{ |
822 |
int val; |
int val; |
823 |
|
|
824 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
825 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
826 |
env->err= 1; |
env->err= 1; |
827 |
return; |
return; |
828 |
} |
} |
829 |
|
|
830 |
if(env->head->item->type!=integer) { |
if(env->head->car->type!=integer) { |
831 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
832 |
env->err= 2; |
env->err= 2; |
833 |
return; |
return; |
834 |
} |
} |
835 |
|
|
836 |
val= env->head->item->content.i; |
val= env->head->car->content.i; |
837 |
toss(env); |
toss(env); |
838 |
push_int(env, !val); |
push_int(env, !val); |
839 |
} |
} |
852 |
symbol *sym; |
symbol *sym; |
853 |
|
|
854 |
/* 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 */ |
855 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
856 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
857 |
env->err= 1; |
env->err= 1; |
858 |
return; |
return; |
859 |
} |
} |
860 |
|
|
861 |
if(env->head->item->type!=symb) { |
if(env->head->car->type!=symb) { |
862 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
863 |
env->err= 2; |
env->err= 2; |
864 |
return; |
return; |
865 |
} |
} |
866 |
|
|
867 |
/* long names are a pain */ |
/* long names are a pain */ |
868 |
sym= env->head->item->content.ptr; |
sym= env->head->car->content.ptr; |
869 |
|
|
870 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
871 |
sym->val= env->head->next->item; |
sym->val= env->head->cdr->content.c->car; |
872 |
|
|
873 |
toss(env); toss(env); |
toss(env); toss(env); |
874 |
} |
} |
937 |
extern void forget(environment *env) |
extern void forget(environment *env) |
938 |
{ |
{ |
939 |
char* sym_id; |
char* sym_id; |
940 |
stackitem *stack_head= env->head; |
cons *stack_head= env->head; |
941 |
|
|
942 |
if(stack_head==NULL) { |
if(stack_head==NULL) { |
943 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
944 |
env->err=1; |
env->err= 1; |
945 |
return; |
return; |
946 |
} |
} |
947 |
|
|
948 |
if(stack_head->item->type!=symb) { |
if(stack_head->car->type!=symb) { |
949 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
950 |
env->err=2; |
env->err= 2; |
951 |
return; |
return; |
952 |
} |
} |
953 |
|
|
954 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= ((symbol*)(stack_head->car->content.ptr))->id; |
955 |
toss(env); |
toss(env); |
956 |
|
|
957 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1023 |
if (myenv.err==4) { |
if (myenv.err==4) { |
1024 |
return EXIT_SUCCESS; /* EOF */ |
return EXIT_SUCCESS; /* EOF */ |
1025 |
} else if(myenv.head!=NULL |
} else if(myenv.head!=NULL |
1026 |
&& myenv.head->item->type==symb |
&& myenv.head->car->type==symb |
1027 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& ((symbol*)(myenv.head->car->content.ptr))->id[0]==';') { |
1028 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1029 |
eval(&myenv); |
eval(&myenv); |
1030 |
} |
} |
1043 |
char* new_string; |
char* new_string; |
1044 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1045 |
|
|
1046 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1047 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1048 |
env->err= 1; |
env->err= 1; |
1049 |
return; |
return; |
1050 |
} |
} |
1051 |
|
|
1052 |
if(env->head->item->type==string |
if(env->head->car->type==string |
1053 |
&& env->head->next->item->type==string) { |
&& env->head->cdr->content.c->car->type==string) { |
1054 |
a_val= env->head->item; |
a_val= env->head->car; |
1055 |
b_val= env->head->next->item; |
b_val= env->head->cdr->content.c->car; |
1056 |
protect(a_val); protect(b_val); |
protect(a_val); protect(b_val); |
1057 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1058 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1067 |
return; |
return; |
1068 |
} |
} |
1069 |
|
|
1070 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1071 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1072 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
1073 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1074 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
1075 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1076 |
push_int(env, b+a); |
push_int(env, b+a); |
1077 |
|
|
1078 |
return; |
return; |
1079 |
} |
} |
1080 |
|
|
1081 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1082 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1083 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1084 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1085 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1086 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1087 |
push_float(env, fb+fa); |
push_float(env, fb+fa); |
1088 |
|
|
1089 |
return; |
return; |
1090 |
} |
} |
1091 |
|
|
1092 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1093 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1094 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1095 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1096 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1097 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1098 |
push_float(env, b+fa); |
push_float(env, b+fa); |
1099 |
|
|
1100 |
return; |
return; |
1101 |
} |
} |
1102 |
|
|
1103 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1104 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1105 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1106 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1107 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1108 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1109 |
push_float(env, fb+a); |
push_float(env, fb+a); |
1110 |
|
|
1121 |
int a, b; |
int a, b; |
1122 |
float fa, fb; |
float fa, fb; |
1123 |
|
|
1124 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1125 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1126 |
env->err=1; |
env->err=1; |
1127 |
return; |
return; |
1128 |
} |
} |
1129 |
|
|
1130 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1131 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1132 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
1133 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1134 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
1135 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1136 |
push_int(env, b-a); |
push_int(env, b-a); |
1137 |
|
|
1138 |
return; |
return; |
1139 |
} |
} |
1140 |
|
|
1141 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1142 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1143 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1144 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1145 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1146 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1147 |
push_float(env, fb-fa); |
push_float(env, fb-fa); |
1148 |
|
|
1149 |
return; |
return; |
1150 |
} |
} |
1151 |
|
|
1152 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1153 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1154 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1155 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1156 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1157 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1158 |
push_float(env, b-fa); |
push_float(env, b-fa); |
1159 |
|
|
1160 |
return; |
return; |
1161 |
} |
} |
1162 |
|
|
1163 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1164 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1165 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1166 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1167 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1168 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1169 |
push_float(env, fb-a); |
push_float(env, fb-a); |
1170 |
|
|
1181 |
int a, b; |
int a, b; |
1182 |
float fa, fb; |
float fa, fb; |
1183 |
|
|
1184 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1185 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1186 |
env->err=1; |
env->err= 1; |
1187 |
return; |
return; |
1188 |
} |
} |
1189 |
|
|
1190 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1191 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1192 |
a=env->head->item->content.i; |
a=env->head->car->content.i; |
1193 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1194 |
b=env->head->item->content.i; |
b=env->head->car->content.i; |
1195 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1196 |
push_int(env, b>a); |
push_int(env, b>a); |
1197 |
|
|
1198 |
return; |
return; |
1199 |
} |
} |
1200 |
|
|
1201 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1202 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1203 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1204 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1205 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1206 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1207 |
push_int(env, fb>fa); |
push_int(env, fb>fa); |
1208 |
|
|
1209 |
return; |
return; |
1210 |
} |
} |
1211 |
|
|
1212 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
1213 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
1214 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
1215 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1216 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
1217 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1218 |
push_int(env, b>fa); |
push_int(env, b>fa); |
1219 |
|
|
1220 |
return; |
return; |
1221 |
} |
} |
1222 |
|
|
1223 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
1224 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
1225 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
1226 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1227 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
1228 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1229 |
push_int(env, fb>a); |
push_int(env, fb>a); |
1230 |
|
|
1259 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1260 |
value *copy_val(environment *env, value *old_value) |
value *copy_val(environment *env, value *old_value) |
1261 |
{ |
{ |
1262 |
stackitem *old_item, *new_item, *prev_item; |
cons *old_item, *new_item, *prev_item; |
1263 |
value *new_value; |
value *new_value; |
1264 |
|
|
1265 |
protect(old_value); |
protect(old_value); |
1278 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1279 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1280 |
break; |
break; |
1281 |
case list: |
case tcons: |
1282 |
new_value->content.ptr= NULL; |
new_value->content.ptr= NULL; |
1283 |
|
|
1284 |
prev_item= NULL; |
prev_item= NULL; |
1285 |
old_item= (stackitem*)(old_value->content.ptr); |
old_item= old_value->content.c; |
1286 |
|
|
1287 |
while(old_item != NULL) { /* While list is not empty */ |
if(old_value->content.ptr != NULL) { /* if list is not empty */ |
1288 |
new_item= malloc(sizeof(stackitem)); |
new_item= malloc(sizeof(cons)); |
1289 |
new_item->item= copy_val(env, old_item->item); /* recurse */ |
new_item->car= copy_val(env, old_item->car); /* recurse */ |
1290 |
new_item->next= NULL; |
new_item->cdr= copy_val(env, old_item->cdr); /* recurse */ |
1291 |
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; |
|
|
} |
|
1292 |
break; |
break; |
1293 |
} |
} |
1294 |
|
|
1300 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1301 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1302 |
{ |
{ |
1303 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1304 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1305 |
env->err= 1; |
env->err= 1; |
1306 |
return; |
return; |
1307 |
} |
} |
1308 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, env->head->car)); |
1309 |
} |
} |
1310 |
|
|
1311 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1313 |
{ |
{ |
1314 |
int truth; |
int truth; |
1315 |
|
|
1316 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1317 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1318 |
env->err= 1; |
env->err= 1; |
1319 |
return; |
return; |
1320 |
} |
} |
1321 |
|
|
1322 |
if(env->head->next->item->type != integer) { |
if(env->head->cdr->content.c->car->type != integer) { |
1323 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1324 |
env->err=2; |
env->err= 2; |
1325 |
return; |
return; |
1326 |
} |
} |
1327 |
|
|
1328 |
swap(env); |
swap(env); |
1329 |
if(env->err) return; |
if(env->err) return; |
1330 |
|
|
1331 |
truth=env->head->item->content.i; |
truth=env->head->car->content.i; |
1332 |
|
|
1333 |
toss(env); |
toss(env); |
1334 |
if(env->err) return; |
if(env->err) return; |
1344 |
{ |
{ |
1345 |
int truth; |
int truth; |
1346 |
|
|
1347 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head==NULL || env->head->cdr->content.c==NULL |
1348 |
|| env->head->next->next==NULL) { |
|| env->head->cdr->content.c->cdr->content.c==NULL) { |
1349 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1350 |
env->err=1; |
env->err= 1; |
1351 |
return; |
return; |
1352 |
} |
} |
1353 |
|
|
1354 |
if(env->head->next->next->item->type != integer) { |
if(env->head->cdr->content.c->cdr->content.c->car->type!=integer) { |
1355 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1356 |
env->err=2; |
env->err= 2; |
1357 |
return; |
return; |
1358 |
} |
} |
1359 |
|
|
1360 |
rot(env); |
rot(env); |
1361 |
if(env->err) return; |
if(env->err) return; |
1362 |
|
|
1363 |
truth=env->head->item->content.i; |
truth= env->head->car->content.i; |
1364 |
|
|
1365 |
toss(env); |
toss(env); |
1366 |
if(env->err) return; |
if(env->err) return; |
1381 |
int truth; |
int truth; |
1382 |
value *loop, *test; |
value *loop, *test; |
1383 |
|
|
1384 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1385 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1386 |
env->err=1; |
env->err= 1; |
1387 |
return; |
return; |
1388 |
} |
} |
1389 |
|
|
1390 |
loop= env->head->item; |
loop= env->head->car; |
1391 |
protect(loop); |
protect(loop); |
1392 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1393 |
|
|
1394 |
test= env->head->item; |
test= env->head->car; |
1395 |
protect(test); |
protect(test); |
1396 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1397 |
|
|
1399 |
push_val(env, test); |
push_val(env, test); |
1400 |
eval(env); |
eval(env); |
1401 |
|
|
1402 |
if(env->head->item->type != integer) { |
if(env->head->car->type != integer) { |
1403 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1404 |
env->err= 2; |
env->err= 2; |
1405 |
return; |
return; |
1406 |
} |
} |
1407 |
|
|
1408 |
truth= env->head->item->content.i; |
truth= env->head->car->content.i; |
1409 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1410 |
|
|
1411 |
if(truth) { |
if(truth) { |
1427 |
value *loop; |
value *loop; |
1428 |
int foo1, foo2; |
int foo1, foo2; |
1429 |
|
|
1430 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || env->head->cdr->content.c==NULL |
1431 |
|| env->head->next->next==NULL) { |
|| env->head->cdr->content.c->cdr->content.c==NULL) { |
1432 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1433 |
env->err= 1; |
env->err= 1; |
1434 |
return; |
return; |
1435 |
} |
} |
1436 |
|
|
1437 |
if(env->head->next->item->type!=integer |
if(env->head->cdr->content.c->car->type!=integer |
1438 |
|| env->head->next->next->item->type!=integer) { |
|| env->head->cdr->content.c->cdr->content.c->car->type!=integer) { |
1439 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1440 |
env->err= 2; |
env->err= 2; |
1441 |
return; |
return; |
1442 |
} |
} |
1443 |
|
|
1444 |
loop= env->head->item; |
loop= env->head->car; |
1445 |
protect(loop); |
protect(loop); |
1446 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1447 |
|
|
1448 |
foo2= env->head->item->content.i; |
foo2= env->head->car->content.i; |
1449 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1450 |
|
|
1451 |
foo1= env->head->item->content.i; |
foo1= env->head->car->content.i; |
1452 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1453 |
|
|
1454 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1473 |
extern void foreach(environment *env) |
extern void foreach(environment *env) |
1474 |
{ |
{ |
1475 |
value *loop, *foo; |
value *loop, *foo; |
1476 |
stackitem *iterator; |
cons *iterator; |
1477 |
|
|
1478 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1479 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1480 |
env->err= 1; |
env->err= 1; |
1481 |
return; |
return; |
1482 |
} |
} |
1483 |
|
|
1484 |
if(env->head->next->item->type != list) { |
if(env->head->cdr->content.c->car->type!=tcons) { |
1485 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1486 |
env->err= 2; |
env->err= 2; |
1487 |
return; |
return; |
1488 |
} |
} |
1489 |
|
|
1490 |
loop= env->head->item; |
loop= env->head->car; |
1491 |
protect(loop); |
protect(loop); |
1492 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1493 |
|
|
1494 |
foo= env->head->item; |
foo= env->head->car; |
1495 |
protect(foo); |
protect(foo); |
1496 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1497 |
|
|
1498 |
iterator= foo->content.ptr; |
iterator= foo->content.c; |
1499 |
|
|
1500 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
1501 |
push_val(env, iterator->item); |
push_val(env, iterator->car); |
1502 |
push_val(env, loop); |
push_val(env, loop); |
1503 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1504 |
iterator= iterator->next; |
if (iterator->cdr->type == tcons){ |
1505 |
|
iterator= iterator->cdr->content.c; |
1506 |
|
} else { |
1507 |
|
printerr("Bad Argument Type"); /* Improper list */ |
1508 |
|
env->err= 2; |
1509 |
|
break; |
1510 |
|
} |
1511 |
} |
} |
1512 |
unprotect(loop); unprotect(foo); |
unprotect(loop); unprotect(foo); |
1513 |
} |
} |
1516 |
extern void to(environment *env) |
extern void to(environment *env) |
1517 |
{ |
{ |
1518 |
int ending, start, i; |
int ending, start, i; |
1519 |
stackitem *iterator, *temp; |
cons *iterator, *temp; |
1520 |
value *pack; |
value *pack; |
1521 |
|
|
1522 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1523 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1524 |
env->err=1; |
env->err= 1; |
1525 |
return; |
return; |
1526 |
} |
} |
1527 |
|
|
1528 |
if(env->head->item->type!=integer |
if(env->head->car->type!=integer |
1529 |
|| env->head->next->item->type!=integer) { |
|| env->head->cdr->content.c->car->type!=integer) { |
1530 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1531 |
env->err=2; |
env->err= 2; |
1532 |
return; |
return; |
1533 |
} |
} |
1534 |
|
|
1535 |
ending= env->head->item->content.i; |
ending= env->head->car->content.i; |
1536 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1537 |
start= env->head->item->content.i; |
start= env->head->car->content.i; |
1538 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1539 |
|
|
1540 |
push_sym(env, "["); |
push_sym(env, "["); |
1552 |
protect(pack); |
protect(pack); |
1553 |
|
|
1554 |
if(iterator==NULL |
if(iterator==NULL |
1555 |
|| (iterator->item->type==symb |
|| (iterator->car->type==symb |
1556 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& ((symbol*)(iterator->car->content.ptr))->id[0]=='[')) { |
1557 |
temp= NULL; |
temp= NULL; |
1558 |
toss(env); |
toss(env); |
1559 |
} else { |
} else { |
1560 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
1561 |
while(iterator->next!=NULL |
while(iterator->cdr->content.c!=NULL |
1562 |
&& (iterator->next->item->type!=symb |
&& (iterator->cdr->content.c->car->type!=symb |
1563 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| ((symbol*)(iterator->cdr->content.c->car->content.ptr))->id[0] |
1564 |
iterator= iterator->next; |
!='[')) |
1565 |
|
iterator= iterator->cdr->content.ptr; |
1566 |
|
|
1567 |
/* Extract list */ |
/* Extract list */ |
1568 |
temp= env->head; |
temp= env->head; |
1569 |
env->head= iterator->next; |
env->head= iterator->cdr->content.c; |
1570 |
iterator->next= NULL; |
iterator->cdr->content.c= NULL; |
1571 |
|
|
1572 |
pack->type= list; |
pack->type= tcons; |
1573 |
pack->content.ptr= temp; |
pack->content.ptr= temp; |
1574 |
|
|
1575 |
if(env->head!=NULL) |
if(env->head!=NULL) |
1619 |
} |
} |
1620 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1621 |
|
|
1622 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(env->head->car->content.ptr))[0]=='\0'){ |
1623 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1624 |
return; |
return; |
1625 |
} |
} |
1626 |
|
|
1627 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(env->head->car->content.ptr)+1); |
1628 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1629 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, env->head->car->content.ptr); |
1630 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1631 |
} |
} |
1632 |
|
|
1679 |
{ |
{ |
1680 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1681 |
|
|
1682 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
1683 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1684 |
env->err=1; |
env->err= 1; |
1685 |
return; |
return; |
1686 |
} |
} |
1687 |
|
|
1688 |
if(env->head->item->type!=integer |
if(env->head->car->type!=integer |
1689 |
|| env->head->next->item->type!=integer) { |
|| env->head->cdr->content.c->car->type!=integer) { |
1690 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1691 |
env->err=2; |
env->err= 2; |
1692 |
return; |
return; |
1693 |
} |
} |
1694 |
|
|
1695 |
dur=env->head->item->content.i; |
dur= env->head->car->content.i; |
1696 |
toss(env); |
toss(env); |
1697 |
freq=env->head->item->content.i; |
freq= env->head->car->content.i; |
1698 |
toss(env); |
toss(env); |
1699 |
|
|
1700 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1701 |
length */ |
length */ |
1702 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1703 |
timer ticks */ |
timer ticks */ |
1704 |
|
|
1705 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1706 |
|
|
1707 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1708 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1709 |
case 0: |
case 0: |
1710 |
usleep(dur); |
usleep(dur); |
1711 |
return; |
return; |
1712 |
case -1: |
case -1: |
1713 |
perror("beep"); |
perror("beep"); |
1714 |
env->err=5; |
env->err= 5; |
1715 |
return; |
return; |
1716 |
default: |
default: |
1717 |
abort(); |
abort(); |
1723 |
{ |
{ |
1724 |
int dur; |
int dur; |
1725 |
|
|
1726 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1727 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1728 |
env->err=1; |
env->err= 1; |
1729 |
return; |
return; |
1730 |
} |
} |
1731 |
|
|
1732 |
if(env->head->item->type!=integer) { |
if(env->head->car->type!=integer) { |
1733 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1734 |
env->err=2; |
env->err= 2; |
1735 |
return; |
return; |
1736 |
} |
} |
1737 |
|
|
1738 |
dur=env->head->item->content.i; |
dur=env->head->car->content.i; |
1739 |
toss(env); |
toss(env); |
1740 |
|
|
1741 |
usleep(dur); |
usleep(dur); |
2032 |
int a, b; |
int a, b; |
2033 |
float fa, fb; |
float fa, fb; |
2034 |
|
|
2035 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2036 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2037 |
env->err=1; |
env->err= 1; |
2038 |
return; |
return; |
2039 |
} |
} |
2040 |
|
|
2041 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2042 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2043 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
2044 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2045 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
2046 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2047 |
push_int(env, b*a); |
push_int(env, b*a); |
2048 |
|
|
2049 |
return; |
return; |
2050 |
} |
} |
2051 |
|
|
2052 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2053 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2054 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2055 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2056 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2057 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2058 |
push_float(env, fb*fa); |
push_float(env, fb*fa); |
2059 |
|
|
2060 |
return; |
return; |
2061 |
} |
} |
2062 |
|
|
2063 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2064 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2065 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2066 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2067 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2068 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2069 |
push_float(env, b*fa); |
push_float(env, b*fa); |
2070 |
|
|
2071 |
return; |
return; |
2072 |
} |
} |
2073 |
|
|
2074 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2075 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2076 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2077 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2078 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2079 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2080 |
push_float(env, fb*a); |
push_float(env, fb*a); |
2081 |
|
|
2083 |
} |
} |
2084 |
|
|
2085 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2086 |
env->err=2; |
env->err= 2; |
2087 |
} |
} |
2088 |
|
|
2089 |
/* "/" */ |
/* "/" */ |
2092 |
int a, b; |
int a, b; |
2093 |
float fa, fb; |
float fa, fb; |
2094 |
|
|
2095 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2096 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2097 |
env->err=1; |
env->err= 1; |
2098 |
return; |
return; |
2099 |
} |
} |
2100 |
|
|
2101 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2102 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2103 |
a=env->head->item->content.i; |
a= env->head->car->content.i; |
2104 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2105 |
b=env->head->item->content.i; |
b= env->head->car->content.i; |
2106 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2107 |
push_float(env, b/a); |
push_float(env, b/a); |
2108 |
|
|
2109 |
return; |
return; |
2110 |
} |
} |
2111 |
|
|
2112 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2113 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2114 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2115 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2116 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2117 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2118 |
push_float(env, fb/fa); |
push_float(env, fb/fa); |
2119 |
|
|
2120 |
return; |
return; |
2121 |
} |
} |
2122 |
|
|
2123 |
if(env->head->item->type==tfloat |
if(env->head->car->type==tfloat |
2124 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2125 |
fa= env->head->item->content.f; |
fa= env->head->car->content.f; |
2126 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2127 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2128 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2129 |
push_float(env, b/fa); |
push_float(env, b/fa); |
2130 |
|
|
2131 |
return; |
return; |
2132 |
} |
} |
2133 |
|
|
2134 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2135 |
&& env->head->next->item->type==tfloat) { |
&& env->head->cdr->content.c->car->type==tfloat) { |
2136 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2137 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2138 |
fb= env->head->item->content.f; |
fb= env->head->car->content.f; |
2139 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2140 |
push_float(env, fb/a); |
push_float(env, fb/a); |
2141 |
|
|
2143 |
} |
} |
2144 |
|
|
2145 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2146 |
env->err=2; |
env->err= 2; |
2147 |
} |
} |
2148 |
|
|
2149 |
/* "mod" */ |
/* "mod" */ |
2151 |
{ |
{ |
2152 |
int a, b; |
int a, b; |
2153 |
|
|
2154 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2155 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2156 |
env->err= 1; |
env->err= 1; |
2157 |
return; |
return; |
2158 |
} |
} |
2159 |
|
|
2160 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2161 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2162 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2163 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2164 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2165 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2166 |
push_int(env, b%a); |
push_int(env, b%a); |
2167 |
|
|
2169 |
} |
} |
2170 |
|
|
2171 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2172 |
env->err=2; |
env->err= 2; |
2173 |
} |
} |
2174 |
|
|
2175 |
/* "div" */ |
/* "div" */ |
2177 |
{ |
{ |
2178 |
int a, b; |
int a, b; |
2179 |
|
|
2180 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || env->head->cdr->content.c==NULL) { |
2181 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2182 |
env->err= 1; |
env->err= 1; |
2183 |
return; |
return; |
2184 |
} |
} |
2185 |
|
|
2186 |
if(env->head->item->type==integer |
if(env->head->car->type==integer |
2187 |
&& env->head->next->item->type==integer) { |
&& env->head->cdr->content.c->car->type==integer) { |
2188 |
a= env->head->item->content.i; |
a= env->head->car->content.i; |
2189 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2190 |
b= env->head->item->content.i; |
b= env->head->car->content.i; |
2191 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2192 |
push_int(env, (int)b/a); |
push_int(env, (int)b/a); |
2193 |
|
|