20 |
Teddy Hogeborn <teddy@fukt.bth.se> |
Teddy Hogeborn <teddy@fukt.bth.se> |
21 |
*/ |
*/ |
22 |
|
|
23 |
#define CAR(X) X->content.c->car |
#define CAR(X) (X->content.c->car) |
24 |
#define CDR(X) X->content.c->cdr |
#define CDR(X) (X->content.c->cdr) |
25 |
|
|
26 |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
27 |
#include <stdio.h> |
#include <stdio.h> |
37 |
#include <unistd.h> |
#include <unistd.h> |
38 |
/* EX_NOINPUT, EX_USAGE */ |
/* EX_NOINPUT, EX_USAGE */ |
39 |
#include <sysexits.h> |
#include <sysexits.h> |
40 |
|
/* assert */ |
41 |
|
#include <assert.h> |
42 |
|
|
43 |
#ifdef __linux__ |
#ifdef __linux__ |
44 |
/* mtrace, muntrace */ |
/* mtrace, muntrace */ |
60 |
env->gc_count= 0; |
env->gc_count= 0; |
61 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
62 |
|
|
63 |
env->head= NULL; |
env->head= new_val(env); |
64 |
|
env->head->type= empty; |
65 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
66 |
env->symbols[i]= NULL; |
env->symbols[i]= NULL; |
67 |
env->err= 0; |
env->err= 0; |
79 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
80 |
extern void toss(environment *env) |
extern void toss(environment *env) |
81 |
{ |
{ |
82 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
83 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
84 |
env->err= 1; |
env->err= 1; |
85 |
return; |
return; |
124 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
125 |
|
|
126 |
nval->content.ptr= NULL; |
nval->content.ptr= NULL; |
127 |
|
nval->type= integer; |
128 |
|
|
129 |
nitem->item= nval; |
nitem->item= nval; |
130 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
165 |
extern void gc_init(environment *env) |
extern void gc_init(environment *env) |
166 |
{ |
{ |
167 |
stackitem *new_head= NULL, *titem; |
stackitem *new_head= NULL, *titem; |
168 |
cons *iterator; |
pair *iterator; |
169 |
symbol *tsymb; |
symbol *tsymb; |
170 |
int i; |
int i; |
171 |
|
|
189 |
if(env->interactive) |
if(env->interactive) |
190 |
printf("."); |
printf("."); |
191 |
|
|
|
|
|
192 |
env->gc_count= 0; |
env->gc_count= 0; |
193 |
|
|
194 |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
203 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
204 |
env->gc_ref= titem; |
env->gc_ref= titem; |
205 |
continue; |
continue; |
206 |
} |
} |
207 |
|
#ifdef DEBUG |
208 |
|
printf("Kept value (%p)", env->gc_ref->item); |
209 |
|
if(env->gc_ref->item->gc.flag.mark) |
210 |
|
printf(" (marked)"); |
211 |
|
if(env->gc_ref->item->gc.flag.protect) |
212 |
|
printf(" (protected)"); |
213 |
|
switch(env->gc_ref->item->type){ |
214 |
|
case integer: |
215 |
|
printf(" integer: %d", env->gc_ref->item->content.i); |
216 |
|
break; |
217 |
|
case func: |
218 |
|
printf(" func: %p", env->gc_ref->item->content.ptr); |
219 |
|
break; |
220 |
|
case symb: |
221 |
|
printf(" symb: %s", env->gc_ref->item->content.sym->id); |
222 |
|
break; |
223 |
|
case tcons: |
224 |
|
printf(" tcons: %p\t%p", env->gc_ref->item->content.c->car, |
225 |
|
env->gc_ref->item->content.c->cdr); |
226 |
|
break; |
227 |
|
default: |
228 |
|
printf(" <unknown %d>", (env->gc_ref->item->type)); |
229 |
|
} |
230 |
|
printf("\n"); |
231 |
|
#endif /* DEBUG */ |
232 |
|
|
233 |
/* Keep values */ |
/* Keep values */ |
234 |
env->gc_count += sizeof(value); |
env->gc_count += sizeof(value); |
235 |
if(env->gc_ref->item->type==string) |
if(env->gc_ref->item->type==string) |
236 |
env->gc_count += strlen(env->gc_ref->item->content.ptr); |
env->gc_count += strlen(env->gc_ref->item->content.ptr)+1; |
237 |
|
|
238 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
239 |
env->gc_ref->next= new_head; |
env->gc_ref->next= new_head; |
248 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
249 |
|
|
250 |
if(env->interactive) |
if(env->interactive) |
251 |
printf("done\n"); |
printf("done (%d bytes still allocated)\n", env->gc_count); |
252 |
|
|
253 |
} |
} |
254 |
|
|
285 |
{ |
{ |
286 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
287 |
|
|
288 |
new_value->content.c= malloc(sizeof(cons)); |
new_value->content.c= malloc(sizeof(pair)); |
289 |
|
assert(new_value->content.c!=NULL); |
290 |
new_value->type= tcons; |
new_value->type= tcons; |
291 |
CAR(new_value)= val; |
CAR(new_value)= val; |
292 |
CDR(new_value)= env->head; |
CDR(new_value)= env->head; |
353 |
{ |
{ |
354 |
char *new_string; |
char *new_string; |
355 |
|
|
356 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
357 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
358 |
env->err= 1; |
env->err= 1; |
359 |
return; |
return; |
450 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
451 |
extern void type(environment *env) |
extern void type(environment *env) |
452 |
{ |
{ |
453 |
int typenum; |
if(env->head->type==empty) { |
|
|
|
|
if(env->head==NULL) { |
|
454 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
455 |
env->err= 1; |
env->err= 1; |
456 |
return; |
return; |
457 |
} |
} |
458 |
|
|
459 |
typenum= CAR(env->head)->type; |
switch(CAR(env->head)->type){ |
460 |
toss(env); |
case empty: |
461 |
switch(typenum){ |
push_sym(env, "empty"); |
462 |
|
break; |
463 |
case integer: |
case integer: |
464 |
push_sym(env, "integer"); |
push_sym(env, "integer"); |
465 |
break; |
break; |
476 |
push_sym(env, "function"); |
push_sym(env, "function"); |
477 |
break; |
break; |
478 |
case tcons: |
case tcons: |
479 |
push_sym(env, "list"); |
push_sym(env, "pair"); |
480 |
break; |
break; |
481 |
} |
} |
482 |
|
swap(env); |
483 |
|
if (env->err) return; |
484 |
|
toss(env); |
485 |
} |
} |
486 |
|
|
487 |
/* Prints the top element of the stack. */ |
/* Print a value */ |
488 |
void print_h(value *stack_head, int noquote) |
void print_val(value *val, int noquote) |
489 |
{ |
{ |
490 |
switch(CAR(stack_head)->type) { |
switch(val->type) { |
491 |
|
case empty: |
492 |
|
printf("[]"); |
493 |
|
break; |
494 |
case integer: |
case integer: |
495 |
printf("%d", CAR(stack_head)->content.i); |
printf("%d", val->content.i); |
496 |
break; |
break; |
497 |
case tfloat: |
case tfloat: |
498 |
printf("%f", CAR(stack_head)->content.f); |
printf("%f", val->content.f); |
499 |
break; |
break; |
500 |
case string: |
case string: |
501 |
if(noquote) |
if(noquote) |
502 |
printf("%s", (char*)CAR(stack_head)->content.ptr); |
printf("%s", (char*)(val->content.ptr)); |
503 |
else |
else |
504 |
printf("\"%s\"", (char*)CAR(stack_head)->content.ptr); |
printf("\"%s\"", (char*)(val->content.ptr)); |
505 |
break; |
break; |
506 |
case symb: |
case symb: |
507 |
printf("%s", CAR(stack_head)->content.sym->id); |
printf("%s", val->content.sym->id); |
508 |
break; |
break; |
509 |
case func: |
case func: |
510 |
printf("#<function %p>", (funcp)(CAR(stack_head)->content.ptr)); |
printf("#<function %p>", (funcp)(val->content.ptr)); |
511 |
break; |
break; |
512 |
case tcons: |
case tcons: |
|
/* A list is just a stack, so make stack_head point to it */ |
|
|
stack_head= CAR(stack_head); |
|
513 |
printf("[ "); |
printf("[ "); |
514 |
while(stack_head != NULL) { |
do { |
515 |
print_h(stack_head, noquote); |
print_val(CAR(val), noquote); |
516 |
printf(" "); |
val= CDR(val); |
517 |
stack_head= CDR(stack_head); |
switch(val->type){ |
518 |
} |
case empty: |
519 |
printf("]"); |
break; |
520 |
|
case tcons: |
521 |
|
printf(" "); |
522 |
|
break; |
523 |
|
default: |
524 |
|
printf(" . "); /* Improper list */ |
525 |
|
print_val(val, noquote); |
526 |
|
} |
527 |
|
} while(val->type == tcons); |
528 |
|
printf(" ]"); |
529 |
break; |
break; |
530 |
} |
} |
531 |
} |
} |
532 |
|
|
533 |
extern void print_(environment *env) |
extern void print_(environment *env) |
534 |
{ |
{ |
535 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
536 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
537 |
env->err= 1; |
env->err= 1; |
538 |
return; |
return; |
539 |
} |
} |
540 |
print_h(env->head, 0); |
print_val(CAR(env->head), 0); |
541 |
nl(); |
nl(); |
542 |
} |
} |
543 |
|
|
551 |
|
|
552 |
extern void princ_(environment *env) |
extern void princ_(environment *env) |
553 |
{ |
{ |
554 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
555 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
556 |
env->err= 1; |
env->err= 1; |
557 |
return; |
return; |
558 |
} |
} |
559 |
print_h(env->head, 1); |
print_val(CAR(env->head), 1); |
560 |
} |
} |
561 |
|
|
562 |
/* Prints the top element of the stack and then discards it. */ |
/* Prints the top element of the stack and then discards it. */ |
570 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
571 |
void print_st(value *stack_head, long counter) |
void print_st(value *stack_head, long counter) |
572 |
{ |
{ |
573 |
if(CDR(stack_head) != NULL) |
if(CDR(stack_head)->type != empty) |
574 |
print_st(CDR(stack_head), counter+1); |
print_st(CDR(stack_head), counter+1); |
575 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
576 |
print_h(stack_head, 0); |
print_val(CAR(stack_head), 0); |
577 |
nl(); |
nl(); |
578 |
} |
} |
579 |
|
|
580 |
/* Prints the stack. */ |
/* Prints the stack. */ |
581 |
extern void printstack(environment *env) |
extern void printstack(environment *env) |
582 |
{ |
{ |
583 |
if(env->head == NULL) { |
if(env->head->type == empty) { |
584 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
585 |
return; |
return; |
586 |
} |
} |
593 |
{ |
{ |
594 |
value *temp= env->head; |
value *temp= env->head; |
595 |
|
|
596 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type == empty || CDR(env->head)->type == empty) { |
597 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
598 |
env->err=1; |
env->err=1; |
599 |
return; |
return; |
609 |
{ |
{ |
610 |
value *temp= env->head; |
value *temp= env->head; |
611 |
|
|
612 |
if(env->head==NULL || CDR(env->head)==NULL |
if(env->head->type == empty || CDR(env->head)->type == empty |
613 |
|| CDR(CDR(env->head))==NULL) { |
|| CDR(CDR(env->head))->type == empty) { |
614 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
615 |
env->err= 1; |
env->err= 1; |
616 |
return; |
return; |
626 |
{ |
{ |
627 |
value *val; |
value *val; |
628 |
|
|
629 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
630 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
631 |
env->err= 1; |
env->err= 1; |
632 |
return; |
return; |
644 |
env->err= 3; |
env->err= 3; |
645 |
return; |
return; |
646 |
} |
} |
647 |
protect(val); |
push_val(env, val); /* Return the symbol's bound value */ |
648 |
toss(env); /* toss the symbol */ |
swap(env); |
649 |
|
if(env->err) return; |
650 |
|
toss(env); /* toss the symbol */ |
651 |
if(env->err) return; |
if(env->err) return; |
|
push_val(env, val); /* Return its bound value */ |
|
|
unprotect(val); |
|
652 |
} |
} |
653 |
|
|
654 |
/* If the top element is a symbol, determine if it's bound to a |
/* If the top element is a symbol, determine if it's bound to a |
664 |
|
|
665 |
gc_maybe(env); |
gc_maybe(env); |
666 |
|
|
667 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
668 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
669 |
env->err= 1; |
env->err= 1; |
670 |
return; |
return; |
695 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
696 |
iterator= temp_val; |
iterator= temp_val; |
697 |
|
|
698 |
while(iterator!=NULL) { |
while(iterator->type != empty) { |
699 |
push_val(env, CAR(iterator)); |
push_val(env, CAR(iterator)); |
700 |
|
|
701 |
if(CAR(env->head)->type==symb |
if(CAR(env->head)->type==symb |
703 |
toss(env); |
toss(env); |
704 |
if(env->err) return; |
if(env->err) return; |
705 |
|
|
706 |
if(CDR(iterator)==NULL){ |
if(CDR(iterator)->type == empty){ |
707 |
goto eval_start; |
goto eval_start; |
708 |
} |
} |
709 |
eval(env); |
eval(env); |
710 |
if(env->err) return; |
if(env->err) return; |
711 |
} |
} |
712 |
if (CDR(iterator)->type == tcons) |
if (CDR(iterator)->type == empty || CDR(iterator)->type == tcons) |
713 |
iterator= CDR(iterator); |
iterator= CDR(iterator); |
714 |
else { |
else { |
715 |
printerr("Bad Argument Type"); /* Improper list */ |
printerr("Bad Argument Type"); /* Improper list */ |
730 |
{ |
{ |
731 |
value *old_head, *new_head, *item; |
value *old_head, *new_head, *item; |
732 |
|
|
733 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
734 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
735 |
env->err= 1; |
env->err= 1; |
736 |
return; |
return; |
737 |
} |
} |
738 |
|
|
739 |
|
if(CAR(env->head)->type==empty) |
740 |
|
return; /* Don't reverse an empty list */ |
741 |
|
|
742 |
if(CAR(env->head)->type!=tcons) { |
if(CAR(env->head)->type!=tcons) { |
743 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
744 |
env->err= 2; |
env->err= 2; |
746 |
} |
} |
747 |
|
|
748 |
old_head= CAR(env->head); |
old_head= CAR(env->head); |
749 |
new_head= NULL; |
new_head= new_val(env); |
750 |
while(old_head!=NULL) { |
new_head->type= empty; |
751 |
|
while(old_head->type != empty) { |
752 |
item= old_head; |
item= old_head; |
753 |
old_head= CDR(old_head); |
old_head= CDR(old_head); |
754 |
CDR(item)= new_head; |
CDR(item)= new_head; |
760 |
/* Make a list. */ |
/* Make a list. */ |
761 |
extern void pack(environment *env) |
extern void pack(environment *env) |
762 |
{ |
{ |
763 |
value *iterator, *temp; |
value *iterator, *temp, *ending; |
764 |
|
|
765 |
|
ending=new_val(env); |
766 |
|
ending->type=empty; |
767 |
|
|
768 |
iterator= env->head; |
iterator= env->head; |
769 |
if(iterator==NULL |
if(iterator->type == empty |
770 |
|| (CAR(iterator)->type==symb |
|| (CAR(iterator)->type==symb |
771 |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
772 |
temp= NULL; |
temp= ending; |
773 |
toss(env); |
toss(env); |
774 |
} else { |
} else { |
775 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
776 |
while(CDR(iterator)!=NULL |
while(CDR(iterator)->type != empty |
777 |
&& (CAR(CDR(iterator))->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
778 |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
779 |
iterator= CDR(iterator); |
iterator= CDR(iterator); |
781 |
/* Extract list */ |
/* Extract list */ |
782 |
temp= env->head; |
temp= env->head; |
783 |
env->head= CDR(iterator); |
env->head= CDR(iterator); |
784 |
CDR(iterator)= NULL; |
CDR(iterator)= ending; |
785 |
|
|
786 |
if(env->head!=NULL) |
if(env->head->type != empty) |
787 |
toss(env); |
toss(env); |
788 |
} |
} |
789 |
|
|
799 |
value *temp, *new_head; |
value *temp, *new_head; |
800 |
|
|
801 |
/* Is top element a list? */ |
/* Is top element a list? */ |
802 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
803 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
804 |
env->err= 1; |
env->err= 1; |
805 |
return; |
return; |
822 |
toss(env); |
toss(env); |
823 |
|
|
824 |
/* Find the end of the list */ |
/* Find the end of the list */ |
825 |
while(CDR(temp)->content.ptr != NULL) { |
while(CDR(temp)->type != empty) { |
826 |
if (CDR(temp)->type == tcons) |
if (CDR(temp)->type == tcons) |
827 |
temp= CDR(temp); |
temp= CDR(temp); |
828 |
else { |
else { |
843 |
{ |
{ |
844 |
void *left, *right; |
void *left, *right; |
845 |
|
|
846 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
847 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
848 |
env->err= 1; |
env->err= 1; |
849 |
return; |
return; |
861 |
{ |
{ |
862 |
int val; |
int val; |
863 |
|
|
864 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
865 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
866 |
env->err= 1; |
env->err= 1; |
867 |
return; |
return; |
892 |
symbol *sym; |
symbol *sym; |
893 |
|
|
894 |
/* 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 */ |
895 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
896 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
897 |
env->err= 1; |
env->err= 1; |
898 |
return; |
return; |
931 |
env->gc_limit= 0; |
env->gc_limit= 0; |
932 |
gc_maybe(env); |
gc_maybe(env); |
933 |
|
|
934 |
|
words(env); |
935 |
|
|
936 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
937 |
free(env->free_string); |
free(env->free_string); |
938 |
|
|
946 |
/* Clear stack */ |
/* Clear stack */ |
947 |
extern void clear(environment *env) |
extern void clear(environment *env) |
948 |
{ |
{ |
949 |
while(env->head!=NULL) |
while(env->head->type != empty) |
950 |
toss(env); |
toss(env); |
951 |
} |
} |
952 |
|
|
959 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) { |
960 |
temp= env->symbols[i]; |
temp= env->symbols[i]; |
961 |
while(temp!=NULL) { |
while(temp!=NULL) { |
962 |
|
#ifdef DEBUG |
963 |
|
if (temp->val != NULL && temp->val->gc.flag.protect) |
964 |
|
printf("(protected) "); |
965 |
|
#endif /* DEBUG */ |
966 |
printf("%s\n", temp->id); |
printf("%s\n", temp->id); |
967 |
temp= temp->next; |
temp= temp->next; |
968 |
} |
} |
985 |
extern void forget(environment *env) |
extern void forget(environment *env) |
986 |
{ |
{ |
987 |
char* sym_id; |
char* sym_id; |
|
value *stack_head= env->head; |
|
988 |
|
|
989 |
if(stack_head==NULL) { |
if(env->head->type==empty) { |
990 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
991 |
env->err= 1; |
env->err= 1; |
992 |
return; |
return; |
993 |
} |
} |
994 |
|
|
995 |
if(CAR(stack_head)->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
996 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
997 |
env->err= 2; |
env->err= 2; |
998 |
return; |
return; |
999 |
} |
} |
1000 |
|
|
1001 |
sym_id= CAR(stack_head)->content.sym->id; |
sym_id= CAR(env->head)->content.sym->id; |
1002 |
toss(env); |
toss(env); |
1003 |
|
|
1004 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1032 |
break; |
break; |
1033 |
case '?': |
case '?': |
1034 |
fprintf (stderr, |
fprintf (stderr, |
1035 |
"Unknown option character `\\x%x'.\n", |
"Unknown option character '\\x%x'.\n", |
1036 |
optopt); |
optopt); |
1037 |
return EX_USAGE; |
return EX_USAGE; |
1038 |
default: |
default: |
1051 |
if(myenv.interactive) { |
if(myenv.interactive) { |
1052 |
printf("Stack version $Revision$\n\ |
printf("Stack version $Revision$\n\ |
1053 |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
1054 |
Stack comes with ABSOLUTELY NO WARRANTY; for details type `warranty;'.\n\ |
Stack comes with ABSOLUTELY NO WARRANTY; for details type 'warranty;'.\n\ |
1055 |
This is free software, and you are welcome to redistribute it\n\ |
This is free software, and you are welcome to redistribute it\n\ |
1056 |
under certain conditions; type `copying;' for details.\n"); |
under certain conditions; type 'copying;' for details.\n"); |
1057 |
} |
} |
1058 |
|
|
1059 |
while(1) { |
while(1) { |
1068 |
} |
} |
1069 |
myenv.err=0; |
myenv.err=0; |
1070 |
} |
} |
1071 |
sx_72656164(&myenv); |
sx_72656164(&myenv); /* "read" */ |
1072 |
if (myenv.err==4) { |
if (myenv.err==4) { /* EOF */ |
1073 |
return EXIT_SUCCESS; /* EOF */ |
myenv.err=0; |
1074 |
} else if(myenv.head!=NULL |
quit(&myenv); |
1075 |
|
} else if(myenv.head->type!=empty |
1076 |
&& CAR(myenv.head)->type==symb |
&& CAR(myenv.head)->type==symb |
1077 |
&& CAR(myenv.head)->content.sym->id[0] |
&& CAR(myenv.head)->content.sym->id[0] |
1078 |
==';') { |
==';') { |
1094 |
char* new_string; |
char* new_string; |
1095 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1096 |
|
|
1097 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1098 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1099 |
env->err= 1; |
env->err= 1; |
1100 |
return; |
return; |
1172 |
int a, b; |
int a, b; |
1173 |
float fa, fb; |
float fa, fb; |
1174 |
|
|
1175 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1176 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1177 |
env->err=1; |
env->err=1; |
1178 |
return; |
return; |
1232 |
int a, b; |
int a, b; |
1233 |
float fa, fb; |
float fa, fb; |
1234 |
|
|
1235 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1236 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1237 |
env->err= 1; |
env->err= 1; |
1238 |
return; |
return; |
1317 |
|
|
1318 |
protect(old_value); |
protect(old_value); |
1319 |
new_value= new_val(env); |
new_value= new_val(env); |
|
protect(new_value); |
|
1320 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1321 |
|
|
1322 |
switch(old_value->type){ |
switch(old_value->type){ |
1331 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1332 |
break; |
break; |
1333 |
case tcons: |
case tcons: |
|
new_value= NULL; |
|
1334 |
|
|
1335 |
new_value->content.c= malloc(sizeof(cons)); |
new_value->content.c= malloc(sizeof(pair)); |
1336 |
|
assert(new_value->content.c!=NULL); |
1337 |
|
|
1338 |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
1339 |
CDR(new_value)= copy_val(env, CDR(old_value)); /* recurse */ |
CDR(new_value)= copy_val(env, CDR(old_value)); /* recurse */ |
1340 |
break; |
break; |
1341 |
} |
} |
1342 |
|
|
1343 |
unprotect(old_value); unprotect(new_value); |
unprotect(old_value); |
1344 |
|
|
1345 |
return new_value; |
return new_value; |
1346 |
} |
} |
1348 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1349 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1350 |
{ |
{ |
1351 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
1352 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1353 |
env->err= 1; |
env->err= 1; |
1354 |
return; |
return; |
1361 |
{ |
{ |
1362 |
int truth; |
int truth; |
1363 |
|
|
1364 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1365 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1366 |
env->err= 1; |
env->err= 1; |
1367 |
return; |
return; |
1392 |
{ |
{ |
1393 |
int truth; |
int truth; |
1394 |
|
|
1395 |
if(env->head==NULL || CDR(env->head)==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1396 |
|| CDR(CDR(env->head))==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1397 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1398 |
env->err= 1; |
env->err= 1; |
1399 |
return; |
return; |
1425 |
|
|
1426 |
extern void sx_656c7365(environment *env) |
extern void sx_656c7365(environment *env) |
1427 |
{ |
{ |
1428 |
if(env->head==NULL || CDR(env->head)==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1429 |
|| CDR(CDR(env->head))==NULL || CDR(CDR(CDR(env->head)))==NULL) { |
|| CDR(CDR(env->head))->type==empty || CDR(CDR(CDR(env->head)))->type==empty |
1430 |
|
|| CDR(CDR(CDR(CDR(env->head))))->type==empty) { |
1431 |
|
printerr("Too Few Arguments"); |
1432 |
|
env->err= 1; |
1433 |
|
return; |
1434 |
|
} |
1435 |
|
|
1436 |
|
if(CAR(CDR(env->head))->type!=symb |
1437 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "then")!=0 |
1438 |
|
|| CAR(CDR(CDR(CDR(env->head))))->type!=symb |
1439 |
|
|| strcmp(CAR(CDR(CDR(CDR(env->head))))->content.sym->id, "if")!=0) { |
1440 |
|
printerr("Bad Argument Type"); |
1441 |
|
env->err= 2; |
1442 |
|
return; |
1443 |
|
} |
1444 |
|
|
1445 |
|
swap(env); toss(env); rot(env); toss(env); |
1446 |
|
ifelse(env); |
1447 |
|
} |
1448 |
|
|
1449 |
|
extern void then(environment *env) |
1450 |
|
{ |
1451 |
|
if(env->head->type==empty || CDR(env->head)->type==empty |
1452 |
|
|| CDR(CDR(env->head))->type==empty) { |
1453 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1454 |
env->err= 1; |
env->err= 1; |
1455 |
return; |
return; |
1463 |
} |
} |
1464 |
|
|
1465 |
swap(env); toss(env); |
swap(env); toss(env); |
1466 |
ifelse(env); |
sx_6966(env); |
1467 |
} |
} |
1468 |
|
|
1469 |
/* "while" */ |
/* "while" */ |
1472 |
int truth; |
int truth; |
1473 |
value *loop, *test; |
value *loop, *test; |
1474 |
|
|
1475 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1476 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1477 |
env->err= 1; |
env->err= 1; |
1478 |
return; |
return; |
1518 |
value *loop; |
value *loop; |
1519 |
int foo1, foo2; |
int foo1, foo2; |
1520 |
|
|
1521 |
if(env->head==NULL || CDR(env->head)==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1522 |
|| CDR(CDR(env->head))==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1523 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1524 |
env->err= 1; |
env->err= 1; |
1525 |
return; |
return; |
1566 |
value *loop, *foo; |
value *loop, *foo; |
1567 |
value *iterator; |
value *iterator; |
1568 |
|
|
1569 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1570 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1571 |
env->err= 1; |
env->err= 1; |
1572 |
return; |
return; |
1609 |
int ending, start, i; |
int ending, start, i; |
1610 |
value *iterator, *temp; |
value *iterator, *temp; |
1611 |
|
|
1612 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1613 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1614 |
env->err= 1; |
env->err= 1; |
1615 |
return; |
return; |
1639 |
|
|
1640 |
iterator= env->head; |
iterator= env->head; |
1641 |
|
|
1642 |
if(iterator==NULL |
if(iterator->type==empty |
1643 |
|| (CAR(iterator)->type==symb |
|| (CAR(iterator)->type==symb |
1644 |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
1645 |
temp= NULL; |
temp= NULL; |
1725 |
} else { |
} else { |
1726 |
push_float(env, ftemp); |
push_float(env, ftemp); |
1727 |
} |
} |
1728 |
|
} else if(sscanf(env->in_string, "\"\"%n", &readlength) != EOF |
1729 |
|
&& readlength != -1) { |
1730 |
|
push_cstring(env, ""); |
1731 |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
1732 |
&& readlength != -1) { |
&& readlength != -1) { |
1733 |
push_cstring(env, match); |
push_cstring(env, match); |
1764 |
{ |
{ |
1765 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1766 |
|
|
1767 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1768 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1769 |
env->err= 1; |
env->err= 1; |
1770 |
return; |
return; |
1809 |
{ |
{ |
1810 |
int dur; |
int dur; |
1811 |
|
|
1812 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
1813 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1814 |
env->err= 1; |
env->err= 1; |
1815 |
return; |
return; |
1829 |
|
|
1830 |
extern void copying(environment *env) |
extern void copying(environment *env) |
1831 |
{ |
{ |
1832 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf(" GNU GENERAL PUBLIC LICENSE\n\ |
1833 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
1834 |
\n\ |
\n\ |
1835 |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
2118 |
int a, b; |
int a, b; |
2119 |
float fa, fb; |
float fa, fb; |
2120 |
|
|
2121 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2122 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2123 |
env->err= 1; |
env->err= 1; |
2124 |
return; |
return; |
2178 |
int a, b; |
int a, b; |
2179 |
float fa, fb; |
float fa, fb; |
2180 |
|
|
2181 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2182 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2183 |
env->err= 1; |
env->err= 1; |
2184 |
return; |
return; |
2237 |
{ |
{ |
2238 |
int a, b; |
int a, b; |
2239 |
|
|
2240 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2241 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2242 |
env->err= 1; |
env->err= 1; |
2243 |
return; |
return; |
2263 |
{ |
{ |
2264 |
int a, b; |
int a, b; |
2265 |
|
|
2266 |
if(env->head==NULL || CDR(env->head)==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2267 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2268 |
env->err= 1; |
env->err= 1; |
2269 |
return; |
return; |
2283 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2284 |
env->err= 2; |
env->err= 2; |
2285 |
} |
} |
2286 |
|
|
2287 |
|
extern void setcar(environment *env) |
2288 |
|
{ |
2289 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2290 |
|
printerr("Too Few Arguments"); |
2291 |
|
env->err= 1; |
2292 |
|
return; |
2293 |
|
} |
2294 |
|
|
2295 |
|
if(CDR(env->head)->type!=tcons) { |
2296 |
|
printerr("Bad Argument Type"); |
2297 |
|
env->err= 2; |
2298 |
|
return; |
2299 |
|
} |
2300 |
|
|
2301 |
|
CAR(CAR(CDR(env->head)))=CAR(env->head); |
2302 |
|
toss(env); |
2303 |
|
} |
2304 |
|
|
2305 |
|
extern void setcdr(environment *env) |
2306 |
|
{ |
2307 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2308 |
|
printerr("Too Few Arguments"); |
2309 |
|
env->err= 1; |
2310 |
|
return; |
2311 |
|
} |
2312 |
|
|
2313 |
|
if(CDR(env->head)->type!=tcons) { |
2314 |
|
printerr("Bad Argument Type"); |
2315 |
|
env->err= 2; |
2316 |
|
return; |
2317 |
|
} |
2318 |
|
|
2319 |
|
CDR(CAR(CDR(env->head)))=CAR(env->head); |
2320 |
|
toss(env); |
2321 |
|
} |
2322 |
|
|
2323 |
|
extern void car(environment *env) |
2324 |
|
{ |
2325 |
|
if(env->head->type==empty) { |
2326 |
|
printerr("Too Few Arguments"); |
2327 |
|
env->err= 1; |
2328 |
|
return; |
2329 |
|
} |
2330 |
|
|
2331 |
|
if(CAR(env->head)->type!=tcons) { |
2332 |
|
printerr("Bad Argument Type"); |
2333 |
|
env->err= 2; |
2334 |
|
return; |
2335 |
|
} |
2336 |
|
|
2337 |
|
CAR(env->head)=CAR(CAR(env->head)); |
2338 |
|
} |
2339 |
|
|
2340 |
|
extern void cdr(environment *env) |
2341 |
|
{ |
2342 |
|
if(env->head->type==empty) { |
2343 |
|
printerr("Too Few Arguments"); |
2344 |
|
env->err= 1; |
2345 |
|
return; |
2346 |
|
} |
2347 |
|
|
2348 |
|
if(CAR(env->head)->type!=tcons) { |
2349 |
|
printerr("Bad Argument Type"); |
2350 |
|
env->err= 2; |
2351 |
|
return; |
2352 |
|
} |
2353 |
|
|
2354 |
|
CAR(env->head)=CDR(CAR(env->head)); |
2355 |
|
} |
2356 |
|
|
2357 |
|
extern void cons(environment *env) |
2358 |
|
{ |
2359 |
|
value *val; |
2360 |
|
|
2361 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2362 |
|
printerr("Too Few Arguments"); |
2363 |
|
env->err= 1; |
2364 |
|
return; |
2365 |
|
} |
2366 |
|
|
2367 |
|
val=new_val(env); |
2368 |
|
val->content.c= malloc(sizeof(pair)); |
2369 |
|
assert(val->content.c!=NULL); |
2370 |
|
val->type=tcons; |
2371 |
|
|
2372 |
|
CAR(val)= CAR(CDR(env->head)); |
2373 |
|
CDR(val)= CAR(env->head); |
2374 |
|
|
2375 |
|
push_val(env, val); |
2376 |
|
|
2377 |
|
swap(env); if(env->err) return; |
2378 |
|
toss(env); if(env->err) return; |
2379 |
|
swap(env); if(env->err) return; |
2380 |
|
toss(env); if(env->err) return; |
2381 |
|
} |