20 |
Teddy Hogeborn <teddy@fukt.bth.se> |
Teddy Hogeborn <teddy@fukt.bth.se> |
21 |
*/ |
*/ |
22 |
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|
23 |
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#define CAR(X) X->content.c->car |
24 |
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#define CDR(X) X->content.c->cdr |
25 |
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|
26 |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
27 |
#include <stdio.h> |
#include <stdio.h> |
28 |
/* exit, EXIT_SUCCESS, malloc, free */ |
/* exit, EXIT_SUCCESS, malloc, free */ |
51 |
{ |
{ |
52 |
int i; |
int i; |
53 |
|
|
54 |
env->gc_limit= 20; |
env->gc_limit= 400000; |
55 |
env->gc_count= 0; |
env->gc_count= 0; |
56 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
|
env->gc_protect= NULL; |
|
57 |
|
|
58 |
env->head= NULL; |
env->head= NULL; |
59 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
73 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
74 |
extern void toss(environment *env) |
extern void toss(environment *env) |
75 |
{ |
{ |
76 |
stackitem *temp= env->head; |
if(env->head==NULL) { |
|
|
|
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if((env->head)==NULL) { |
|
77 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
78 |
env->err= 1; |
env->err= 1; |
79 |
return; |
return; |
80 |
} |
} |
81 |
|
|
82 |
env->head= env->head->next; /* Remove the top stack item */ |
env->head= CDR(env->head); /* Remove the top stack item */ |
|
free(temp); /* Free the old top stack item */ |
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env->gc_limit--; |
|
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gc_init(env); |
|
83 |
} |
} |
84 |
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|
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 |
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122 |
nitem->item= nval; |
nitem->item= nval; |
123 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
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env->gc_ref= nitem; |
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124 |
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125 |
env->gc_count++; |
env->gc_ref= nitem; |
126 |
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|
127 |
protect(env, nval); |
env->gc_count += sizeof(value); |
128 |
gc_init(env); |
nval->gc.flag.mark= 0; |
129 |
unprotect(env); |
nval->gc.flag.protect= 0; |
130 |
|
|
131 |
return nval; |
return nval; |
132 |
} |
} |
133 |
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|
134 |
/* Mark values recursively. |
/* Mark values recursively. |
135 |
Marked values are not collected by the GC. */ |
Marked values are not collected by the GC. */ |
136 |
void gc_mark(value *val) |
inline void gc_mark(value *val) |
137 |
{ |
{ |
138 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.mark) |
|
|
|
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if(val==NULL || val->gc_garb==0) |
|
139 |
return; |
return; |
140 |
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141 |
val->gc_garb= 0; |
val->gc.flag.mark= 1; |
142 |
|
|
143 |
if(val->type==list) { |
if(val->type==tcons) { |
144 |
iterator= val->content.ptr; |
gc_mark(CAR(val)); |
145 |
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gc_mark(CDR(val)); |
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while(iterator!=NULL) { |
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gc_mark(iterator->item); |
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iterator= iterator->next; |
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} |
|
146 |
} |
} |
147 |
} |
} |
148 |
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149 |
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inline void gc_maybe(environment *env) |
150 |
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{ |
151 |
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if(env->gc_count < env->gc_limit) |
152 |
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return; |
153 |
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else |
154 |
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return gc_init(env); |
155 |
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} |
156 |
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|
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 |
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|
165 |
if(env->gc_count < env->gc_limit) |
if(env->interactive) |
166 |
return; |
printf("Garbage collecting."); |
167 |
|
|
168 |
/* Garb by default */ |
/* Mark values on stack */ |
169 |
iterator= env->gc_ref; |
gc_mark(env->head); |
|
while(iterator!=NULL) { |
|
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iterator->item->gc_garb= 1; |
|
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iterator= iterator->next; |
|
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} |
|
170 |
|
|
171 |
/* Mark protected values */ |
if(env->interactive) |
172 |
iterator= env->gc_protect; |
printf("."); |
|
while(iterator!=NULL) { |
|
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gc_mark(iterator->item); |
|
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iterator= iterator->next; |
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} |
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173 |
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/* Mark values on stack */ |
|
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iterator= env->head; |
|
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while(iterator!=NULL) { |
|
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gc_mark(iterator->item); |
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iterator= iterator->next; |
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} |
|
174 |
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|
175 |
/* Mark values in hashtable */ |
/* Mark values in hashtable */ |
176 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) |
177 |
tsymb= env->symbols[i]; |
for(tsymb= env->symbols[i]; tsymb!=NULL; tsymb= tsymb->next) |
178 |
while(tsymb!=NULL) { |
if (tsymb->val != NULL) |
179 |
gc_mark(tsymb->val); |
gc_mark(tsymb->val); |
180 |
tsymb= tsymb->next; |
|
181 |
} |
|
182 |
} |
if(env->interactive) |
183 |
|
printf("."); |
184 |
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185 |
|
|
186 |
env->gc_count= 0; |
env->gc_count= 0; |
187 |
|
|
188 |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
189 |
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|
190 |
if(env->gc_ref->item->gc_garb) { |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
191 |
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|
192 |
switch(env->gc_ref->item->type) { /* Remove content */ |
if(env->gc_ref->item->type==string) /* Remove content */ |
|
case string: |
|
193 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
194 |
break; |
|
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case list: |
|
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while(env->gc_ref->item->content.ptr!=NULL) { |
|
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titem= env->gc_ref->item->content.ptr; |
|
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env->gc_ref->item->content.ptr= titem->next; |
|
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free(titem); |
|
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} |
|
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break; |
|
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default: |
|
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break; |
|
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} |
|
195 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
196 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
197 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
198 |
env->gc_ref= titem; |
env->gc_ref= titem; |
199 |
} else { /* Keep values */ |
continue; |
200 |
titem= env->gc_ref->next; |
} |
201 |
env->gc_ref->next= new_head; |
|
202 |
new_head= env->gc_ref; |
/* Keep values */ |
203 |
env->gc_ref= titem; |
env->gc_count += sizeof(value); |
204 |
env->gc_count++; |
if(env->gc_ref->item->type==string) |
205 |
} |
env->gc_count += strlen(env->gc_ref->item->content.ptr); |
206 |
|
|
207 |
|
titem= env->gc_ref->next; |
208 |
|
env->gc_ref->next= new_head; |
209 |
|
new_head= env->gc_ref; |
210 |
|
new_head->item->gc.flag.mark= 0; |
211 |
|
env->gc_ref= titem; |
212 |
} |
} |
213 |
|
|
214 |
env->gc_limit= env->gc_count*2; |
if (env->gc_limit < env->gc_count*2) |
215 |
|
env->gc_limit= env->gc_count*2; |
216 |
|
|
217 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
218 |
|
|
219 |
|
if(env->interactive) |
220 |
|
printf("done\n"); |
221 |
|
|
222 |
} |
} |
223 |
|
|
224 |
/* Protect values from GC */ |
/* Protect values from GC */ |
225 |
void protect(environment *env, value *val) |
void protect(value *val) |
226 |
{ |
{ |
227 |
stackitem *new_item= malloc(sizeof(stackitem)); |
if(val==NULL || val->gc.flag.protect) |
228 |
new_item->item= val; |
return; |
229 |
new_item->next= env->gc_protect; |
|
230 |
env->gc_protect= new_item; |
val->gc.flag.protect= 1; |
231 |
|
|
232 |
|
if(val->type==tcons) { |
233 |
|
protect(CAR(val)); |
234 |
|
protect(CDR(val)); |
235 |
|
} |
236 |
} |
} |
237 |
|
|
238 |
/* Unprotect values from GC */ |
/* Unprotect values from GC */ |
239 |
void unprotect(environment *env) |
void unprotect(value *val) |
240 |
{ |
{ |
241 |
stackitem *temp= env->gc_protect; |
if(val==NULL || !(val->gc.flag.protect)) |
242 |
env->gc_protect= env->gc_protect->next; |
return; |
243 |
free(temp); |
|
244 |
|
val->gc.flag.protect= 0; |
245 |
|
|
246 |
|
if(val->type==tcons) { |
247 |
|
unprotect(CAR(val)); |
248 |
|
unprotect(CDR(val)); |
249 |
|
} |
250 |
} |
} |
251 |
|
|
252 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
253 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
254 |
{ |
{ |
255 |
stackitem *new_item= malloc(sizeof(stackitem)); |
value *new_value= new_val(env); |
256 |
new_item->item= val; |
|
257 |
new_item->next= env->head; |
new_value->content.c= malloc(sizeof(cons)); |
258 |
env->head= new_item; |
new_value->type= tcons; |
259 |
|
CAR(new_value)= val; |
260 |
|
CDR(new_value)= env->head; |
261 |
|
env->head= new_value; |
262 |
} |
} |
263 |
|
|
264 |
/* Push an integer onto the stack */ |
/* Push an integer onto the stack */ |
287 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
288 |
{ |
{ |
289 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
290 |
|
int length= strlen(in_string)+1; |
291 |
|
|
292 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(length); |
293 |
|
env->gc_count += length; |
294 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
295 |
new_value->type= string; |
new_value->type= string; |
296 |
|
|
321 |
{ |
{ |
322 |
char *new_string; |
char *new_string; |
323 |
|
|
324 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
325 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
326 |
env->err= 1; |
env->err= 1; |
327 |
return; |
return; |
328 |
} |
} |
329 |
|
|
330 |
if(env->head->item->type!=string) { |
if(CAR(env->head)->type!=string) { |
331 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
332 |
env->err= 2; |
env->err= 2; |
333 |
return; |
return; |
334 |
} |
} |
335 |
|
|
336 |
new_string= mangle_str((const char *)(env->head->item->content.ptr)); |
new_string= |
337 |
|
mangle_str((const char *)(CAR(env->head)->content.ptr)); |
338 |
|
|
339 |
toss(env); |
toss(env); |
340 |
if(env->err) return; |
if(env->err) return; |
358 |
char *mangled; /* Mangled function name */ |
char *mangled; /* Mangled function name */ |
359 |
|
|
360 |
new_value= new_val(env); |
new_value= new_val(env); |
361 |
protect(env, new_value); |
protect(new_value); |
362 |
new_fvalue= new_val(env); |
new_fvalue= new_val(env); |
363 |
protect(env, new_fvalue); |
protect(new_fvalue); |
364 |
|
|
365 |
/* The new value is a symbol */ |
/* The new value is a symbol */ |
366 |
new_value->type= symb; |
new_value->type= symb; |
406 |
} |
} |
407 |
|
|
408 |
push_val(env, new_value); |
push_val(env, new_value); |
409 |
unprotect(env); unprotect(env); |
unprotect(new_value); unprotect(new_fvalue); |
410 |
} |
} |
411 |
|
|
412 |
/* Print newline. */ |
/* Print newline. */ |
420 |
{ |
{ |
421 |
int typenum; |
int typenum; |
422 |
|
|
423 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
424 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
425 |
env->err=1; |
env->err= 1; |
426 |
return; |
return; |
427 |
} |
} |
428 |
typenum=env->head->item->type; |
|
429 |
|
typenum= CAR(env->head)->type; |
430 |
toss(env); |
toss(env); |
431 |
switch(typenum){ |
switch(typenum){ |
432 |
case integer: |
case integer: |
444 |
case func: |
case func: |
445 |
push_sym(env, "function"); |
push_sym(env, "function"); |
446 |
break; |
break; |
447 |
case list: |
case tcons: |
448 |
push_sym(env, "list"); |
push_sym(env, "list"); |
449 |
break; |
break; |
450 |
} |
} |
451 |
} |
} |
452 |
|
|
453 |
/* Prints the top element of the stack. */ |
/* Prints the top element of the stack. */ |
454 |
void print_h(stackitem *stack_head, int noquote) |
void print_h(value *stack_head, int noquote) |
455 |
{ |
{ |
456 |
switch(stack_head->item->type) { |
switch(CAR(stack_head)->type) { |
457 |
case integer: |
case integer: |
458 |
printf("%d", stack_head->item->content.i); |
printf("%d", CAR(stack_head)->content.i); |
459 |
break; |
break; |
460 |
case tfloat: |
case tfloat: |
461 |
printf("%f", stack_head->item->content.f); |
printf("%f", CAR(stack_head)->content.f); |
462 |
break; |
break; |
463 |
case string: |
case string: |
464 |
if(noquote) |
if(noquote) |
465 |
printf("%s", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)CAR(stack_head)->content.ptr); |
466 |
else |
else |
467 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("\"%s\"", (char*)CAR(stack_head)->content.ptr); |
468 |
break; |
break; |
469 |
case symb: |
case symb: |
470 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", CAR(stack_head)->content.sym->id); |
471 |
break; |
break; |
472 |
case func: |
case func: |
473 |
printf("#<function %p>", (funcp)(stack_head->item->content.ptr)); |
printf("#<function %p>", (funcp)(CAR(stack_head)->content.ptr)); |
474 |
break; |
break; |
475 |
case list: |
case tcons: |
476 |
/* 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 */ |
477 |
stack_head=(stackitem *)(stack_head->item->content.ptr); |
stack_head= CAR(stack_head); |
478 |
printf("[ "); |
printf("[ "); |
479 |
while(stack_head != NULL) { |
while(stack_head != NULL) { |
480 |
print_h(stack_head, noquote); |
print_h(stack_head, noquote); |
481 |
printf(" "); |
printf(" "); |
482 |
stack_head=stack_head->next; |
stack_head= CDR(stack_head); |
483 |
} |
} |
484 |
printf("]"); |
printf("]"); |
485 |
break; |
break; |
490 |
{ |
{ |
491 |
if(env->head==NULL) { |
if(env->head==NULL) { |
492 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
493 |
env->err=1; |
env->err= 1; |
494 |
return; |
return; |
495 |
} |
} |
496 |
print_h(env->head, 0); |
print_h(env->head, 0); |
509 |
{ |
{ |
510 |
if(env->head==NULL) { |
if(env->head==NULL) { |
511 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
512 |
env->err=1; |
env->err= 1; |
513 |
return; |
return; |
514 |
} |
} |
515 |
print_h(env->head, 1); |
print_h(env->head, 1); |
524 |
} |
} |
525 |
|
|
526 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
527 |
void print_st(stackitem *stack_head, long counter) |
void print_st(value *stack_head, long counter) |
528 |
{ |
{ |
529 |
if(stack_head->next != NULL) |
if(CDR(stack_head) != NULL) |
530 |
print_st(stack_head->next, counter+1); |
print_st(CDR(stack_head), counter+1); |
531 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
532 |
print_h(stack_head, 0); |
print_h(stack_head, 0); |
533 |
nl(); |
nl(); |
547 |
/* Swap the two top elements on the stack. */ |
/* Swap the two top elements on the stack. */ |
548 |
extern void swap(environment *env) |
extern void swap(environment *env) |
549 |
{ |
{ |
550 |
stackitem *temp= env->head; |
value *temp= env->head; |
551 |
|
|
552 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
553 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
554 |
env->err=1; |
env->err=1; |
555 |
return; |
return; |
556 |
} |
} |
557 |
|
|
558 |
env->head= env->head->next; |
env->head= CDR(env->head); |
559 |
temp->next= env->head->next; |
CDR(temp)= CDR(env->head); |
560 |
env->head->next= temp; |
CDR(env->head)= temp; |
561 |
} |
} |
562 |
|
|
563 |
/* Rotate the first three elements on the stack. */ |
/* Rotate the first three elements on the stack. */ |
564 |
extern void rot(environment *env) |
extern void rot(environment *env) |
565 |
{ |
{ |
566 |
stackitem *temp= env->head; |
value *temp= env->head; |
567 |
|
|
568 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
569 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
570 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
571 |
env->err=1; |
env->err= 1; |
572 |
return; |
return; |
573 |
} |
} |
574 |
|
|
575 |
env->head= env->head->next->next; |
env->head= CDR(CDR(env->head)); |
576 |
temp->next->next= env->head->next; |
CDR(CDR(temp))= CDR(env->head); |
577 |
env->head->next= temp; |
CDR(env->head)= temp; |
578 |
} |
} |
579 |
|
|
580 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
582 |
{ |
{ |
583 |
value *val; |
value *val; |
584 |
|
|
585 |
if(env->head == NULL) { |
if(env->head==NULL) { |
586 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
587 |
env->err=1; |
env->err= 1; |
588 |
return; |
return; |
589 |
} |
} |
590 |
|
|
591 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
592 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
593 |
env->err=2; |
env->err= 2; |
594 |
return; |
return; |
595 |
} |
} |
596 |
|
|
597 |
val=((symbol *)(env->head->item->content.ptr))->val; |
val= CAR(env->head)->content.sym->val; |
598 |
if(val == NULL){ |
if(val == NULL){ |
599 |
printerr("Unbound Variable"); |
printerr("Unbound Variable"); |
600 |
env->err=3; |
env->err= 3; |
601 |
return; |
return; |
602 |
} |
} |
603 |
protect(env, val); |
protect(val); |
604 |
toss(env); /* toss the symbol */ |
toss(env); /* toss the symbol */ |
605 |
if(env->err) return; |
if(env->err) return; |
606 |
push_val(env, val); /* Return its bound value */ |
push_val(env, val); /* Return its bound value */ |
607 |
unprotect(env); |
unprotect(val); |
608 |
} |
} |
609 |
|
|
610 |
/* 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 |
614 |
{ |
{ |
615 |
funcp in_func; |
funcp in_func; |
616 |
value* temp_val; |
value* temp_val; |
617 |
stackitem* iterator; |
value* iterator; |
618 |
|
|
619 |
eval_start: |
eval_start: |
620 |
|
|
621 |
|
gc_maybe(env); |
622 |
|
|
623 |
if(env->head==NULL) { |
if(env->head==NULL) { |
624 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
625 |
env->err=1; |
env->err= 1; |
626 |
return; |
return; |
627 |
} |
} |
628 |
|
|
629 |
switch(env->head->item->type) { |
switch(CAR(env->head)->type) { |
630 |
/* if it's a symbol */ |
/* if it's a symbol */ |
631 |
case symb: |
case symb: |
632 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
633 |
if(env->err) return; |
if(env->err) return; |
634 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(CAR(env->head)->type!=symb){ /* don't recurse symbols */ |
635 |
goto eval_start; |
goto eval_start; |
636 |
} |
} |
637 |
return; |
return; |
638 |
|
|
639 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
640 |
case func: |
case func: |
641 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(CAR(env->head)->content.ptr); |
642 |
toss(env); |
toss(env); |
643 |
if(env->err) return; |
if(env->err) return; |
644 |
return in_func(env); |
return in_func(env); |
645 |
|
|
646 |
/* If it's a list */ |
/* If it's a list */ |
647 |
case list: |
case tcons: |
648 |
temp_val= env->head->item; |
temp_val= CAR(env->head); |
649 |
protect(env, temp_val); |
protect(temp_val); |
650 |
|
|
651 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
652 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= temp_val; |
653 |
|
|
654 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
655 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
656 |
|
|
657 |
if(env->head->item->type==symb |
if(CAR(env->head)->type==symb |
658 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& CAR(env->head)->content.sym->id[0]==';') { |
659 |
toss(env); |
toss(env); |
660 |
if(env->err) return; |
if(env->err) return; |
661 |
|
|
662 |
if(iterator->next == NULL){ |
if(CDR(iterator)==NULL){ |
663 |
goto eval_start; |
goto eval_start; |
664 |
} |
} |
665 |
eval(env); |
eval(env); |
666 |
if(env->err) return; |
if(env->err) return; |
667 |
} |
} |
668 |
iterator= iterator->next; |
if (CDR(iterator)->type == tcons) |
669 |
|
iterator= CDR(iterator); |
670 |
|
else { |
671 |
|
printerr("Bad Argument Type"); /* Improper list */ |
672 |
|
env->err= 2; |
673 |
|
return; |
674 |
|
} |
675 |
} |
} |
676 |
unprotect(env); |
unprotect(temp_val); |
677 |
return; |
return; |
678 |
|
|
679 |
default: |
default: |
684 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
685 |
extern void rev(environment *env) |
extern void rev(environment *env) |
686 |
{ |
{ |
687 |
stackitem *old_head, *new_head, *item; |
value *old_head, *new_head, *item; |
688 |
|
|
689 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
690 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
691 |
env->err= 1; |
env->err= 1; |
692 |
return; |
return; |
693 |
} |
} |
694 |
|
|
695 |
if(env->head->item->type!=list) { |
if(CAR(env->head)->type!=tcons) { |
696 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
697 |
env->err= 2; |
env->err= 2; |
698 |
return; |
return; |
699 |
} |
} |
700 |
|
|
701 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= CAR(env->head); |
702 |
new_head= NULL; |
new_head= NULL; |
703 |
while(old_head != NULL){ |
while(old_head!=NULL) { |
704 |
item= old_head; |
item= old_head; |
705 |
old_head= old_head->next; |
old_head= CDR(old_head); |
706 |
item->next= new_head; |
CDR(item)= new_head; |
707 |
new_head= item; |
new_head= item; |
708 |
} |
} |
709 |
env->head->item->content.ptr= new_head; |
CAR(env->head)= new_head; |
710 |
} |
} |
711 |
|
|
712 |
/* Make a list. */ |
/* Make a list. */ |
713 |
extern void pack(environment *env) |
extern void pack(environment *env) |
714 |
{ |
{ |
715 |
stackitem *iterator, *temp; |
value *iterator, *temp; |
|
value *pack; |
|
716 |
|
|
717 |
iterator= env->head; |
iterator= env->head; |
|
pack= new_val(env); |
|
|
protect(env, pack); |
|
|
|
|
718 |
if(iterator==NULL |
if(iterator==NULL |
719 |
|| (iterator->item->type==symb |
|| (CAR(iterator)->type==symb |
720 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
721 |
temp= NULL; |
temp= NULL; |
722 |
toss(env); |
toss(env); |
723 |
} else { |
} else { |
724 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
725 |
while(iterator->next!=NULL |
while(CDR(iterator)!=NULL |
726 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
727 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
728 |
iterator= iterator->next; |
iterator= CDR(iterator); |
729 |
|
|
730 |
/* Extract list */ |
/* Extract list */ |
731 |
temp= env->head; |
temp= env->head; |
732 |
env->head= iterator->next; |
env->head= CDR(iterator); |
733 |
iterator->next= NULL; |
CDR(iterator)= NULL; |
734 |
|
|
|
pack->type= list; |
|
|
pack->content.ptr= temp; |
|
|
|
|
735 |
if(env->head!=NULL) |
if(env->head!=NULL) |
736 |
toss(env); |
toss(env); |
737 |
} |
} |
738 |
|
|
739 |
/* Push list */ |
/* Push list */ |
740 |
|
|
741 |
push_val(env, pack); |
push_val(env, temp); |
742 |
rev(env); |
rev(env); |
|
|
|
|
unprotect(env); |
|
743 |
} |
} |
744 |
|
|
745 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
746 |
extern void expand(environment *env) |
extern void expand(environment *env) |
747 |
{ |
{ |
748 |
stackitem *temp, *new_head; |
value *temp, *new_head; |
749 |
|
|
750 |
/* Is top element a list? */ |
/* Is top element a list? */ |
751 |
if(env->head==NULL) { |
if(env->head==NULL) { |
753 |
env->err= 1; |
env->err= 1; |
754 |
return; |
return; |
755 |
} |
} |
756 |
if(env->head->item->type!=list) { |
|
757 |
|
if(CAR(env->head)->type!=tcons) { |
758 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
759 |
env->err= 2; |
env->err= 2; |
760 |
return; |
return; |
766 |
return; |
return; |
767 |
|
|
768 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
769 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= CAR(env->head); |
770 |
|
|
771 |
toss(env); |
toss(env); |
772 |
|
|
773 |
/* Find the end of the list */ |
/* Find the end of the list */ |
774 |
while(temp->next!=NULL) |
while(CDR(temp)->content.ptr != NULL) { |
775 |
temp= temp->next; |
if (CDR(temp)->type == tcons) |
776 |
|
temp= CDR(temp); |
777 |
|
else { |
778 |
|
printerr("Bad Argument Type"); /* Improper list */ |
779 |
|
env->err= 2; |
780 |
|
return; |
781 |
|
} |
782 |
|
} |
783 |
|
|
784 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
785 |
temp->next= env->head; |
CDR(temp)= env->head; |
786 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
787 |
|
|
788 |
} |
} |
791 |
extern void eq(environment *env) |
extern void eq(environment *env) |
792 |
{ |
{ |
793 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
794 |
|
|
795 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
796 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
797 |
env->err= 1; |
env->err= 1; |
798 |
return; |
return; |
799 |
} |
} |
800 |
|
|
801 |
left= env->head->item->content.ptr; |
left= CAR(env->head)->content.ptr; |
802 |
swap(env); |
right= CAR(CDR(env->head))->content.ptr; |
|
right= env->head->item->content.ptr; |
|
|
result= (left==right); |
|
|
|
|
803 |
toss(env); toss(env); |
toss(env); toss(env); |
804 |
push_int(env, result); |
|
805 |
|
push_int(env, left==right); |
806 |
} |
} |
807 |
|
|
808 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
810 |
{ |
{ |
811 |
int val; |
int val; |
812 |
|
|
813 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
814 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
815 |
env->err= 1; |
env->err= 1; |
816 |
return; |
return; |
817 |
} |
} |
818 |
|
|
819 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
820 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
821 |
env->err= 2; |
env->err= 2; |
822 |
return; |
return; |
823 |
} |
} |
824 |
|
|
825 |
val= env->head->item->content.i; |
val= CAR(env->head)->content.i; |
826 |
toss(env); |
toss(env); |
827 |
push_int(env, !val); |
push_int(env, !val); |
828 |
} |
} |
841 |
symbol *sym; |
symbol *sym; |
842 |
|
|
843 |
/* 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 */ |
844 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
845 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
846 |
env->err= 1; |
env->err= 1; |
847 |
return; |
return; |
848 |
} |
} |
849 |
|
|
850 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
851 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
852 |
env->err= 2; |
env->err= 2; |
853 |
return; |
return; |
854 |
} |
} |
855 |
|
|
856 |
/* long names are a pain */ |
/* long names are a pain */ |
857 |
sym= env->head->item->content.ptr; |
sym= CAR(env->head)->content.ptr; |
858 |
|
|
859 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
860 |
sym->val= env->head->next->item; |
sym->val= CAR(CDR(env->head)); |
861 |
|
|
862 |
toss(env); toss(env); |
toss(env); toss(env); |
863 |
} |
} |
878 |
} |
} |
879 |
|
|
880 |
env->gc_limit= 0; |
env->gc_limit= 0; |
881 |
gc_init(env); |
gc_maybe(env); |
882 |
|
|
883 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
884 |
free(env->free_string); |
free(env->free_string); |
926 |
extern void forget(environment *env) |
extern void forget(environment *env) |
927 |
{ |
{ |
928 |
char* sym_id; |
char* sym_id; |
929 |
stackitem *stack_head= env->head; |
value *stack_head= env->head; |
930 |
|
|
931 |
if(stack_head==NULL) { |
if(stack_head==NULL) { |
932 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
933 |
env->err=1; |
env->err= 1; |
934 |
return; |
return; |
935 |
} |
} |
936 |
|
|
937 |
if(stack_head->item->type!=symb) { |
if(CAR(stack_head)->type!=symb) { |
938 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
939 |
env->err=2; |
env->err= 2; |
940 |
return; |
return; |
941 |
} |
} |
942 |
|
|
943 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= CAR(stack_head)->content.sym->id; |
944 |
toss(env); |
toss(env); |
945 |
|
|
946 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1012 |
if (myenv.err==4) { |
if (myenv.err==4) { |
1013 |
return EXIT_SUCCESS; /* EOF */ |
return EXIT_SUCCESS; /* EOF */ |
1014 |
} else if(myenv.head!=NULL |
} else if(myenv.head!=NULL |
1015 |
&& myenv.head->item->type==symb |
&& CAR(myenv.head)->type==symb |
1016 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& CAR(myenv.head)->content.sym->id[0] |
1017 |
|
==';') { |
1018 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1019 |
eval(&myenv); |
eval(&myenv); |
1020 |
} |
} |
1021 |
gc_init(&myenv); |
gc_maybe(&myenv); |
1022 |
} |
} |
1023 |
quit(&myenv); |
quit(&myenv); |
1024 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
1033 |
char* new_string; |
char* new_string; |
1034 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1035 |
|
|
1036 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1037 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1038 |
env->err= 1; |
env->err= 1; |
1039 |
return; |
return; |
1040 |
} |
} |
1041 |
|
|
1042 |
if(env->head->item->type==string |
if(CAR(env->head)->type==string |
1043 |
&& env->head->next->item->type==string) { |
&& CAR(CDR(env->head))->type==string) { |
1044 |
a_val= env->head->item; |
a_val= CAR(env->head); |
1045 |
b_val= env->head->next->item; |
b_val= CAR(CDR(env->head)); |
1046 |
protect(env, a_val); protect(env, b_val); |
protect(a_val); protect(b_val); |
1047 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1048 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1049 |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
1051 |
strcpy(new_string, b_val->content.ptr); |
strcpy(new_string, b_val->content.ptr); |
1052 |
strcat(new_string, a_val->content.ptr); |
strcat(new_string, a_val->content.ptr); |
1053 |
push_cstring(env, new_string); |
push_cstring(env, new_string); |
1054 |
unprotect(env); unprotect(env); |
unprotect(a_val); unprotect(b_val); |
1055 |
free(new_string); |
free(new_string); |
1056 |
|
|
1057 |
return; |
return; |
1058 |
} |
} |
1059 |
|
|
1060 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1061 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1062 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1063 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1064 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1065 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1066 |
push_int(env, b+a); |
push_int(env, b+a); |
1067 |
|
|
1068 |
return; |
return; |
1069 |
} |
} |
1070 |
|
|
1071 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1072 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1073 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1074 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1075 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1076 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1077 |
push_float(env, fb+fa); |
push_float(env, fb+fa); |
1078 |
|
|
1079 |
return; |
return; |
1080 |
} |
} |
1081 |
|
|
1082 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1083 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1084 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1085 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1086 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1087 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1088 |
push_float(env, b+fa); |
push_float(env, b+fa); |
1089 |
|
|
1090 |
return; |
return; |
1091 |
} |
} |
1092 |
|
|
1093 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1094 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1095 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1096 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1097 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1098 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1099 |
push_float(env, fb+a); |
push_float(env, fb+a); |
1100 |
|
|
1111 |
int a, b; |
int a, b; |
1112 |
float fa, fb; |
float fa, fb; |
1113 |
|
|
1114 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1115 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1116 |
env->err=1; |
env->err=1; |
1117 |
return; |
return; |
1118 |
} |
} |
1119 |
|
|
1120 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1121 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1122 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1123 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1124 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1125 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1126 |
push_int(env, b-a); |
push_int(env, b-a); |
1127 |
|
|
1128 |
return; |
return; |
1129 |
} |
} |
1130 |
|
|
1131 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1132 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1133 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1134 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1135 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1136 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1137 |
push_float(env, fb-fa); |
push_float(env, fb-fa); |
1138 |
|
|
1139 |
return; |
return; |
1140 |
} |
} |
1141 |
|
|
1142 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1143 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1144 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1145 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1146 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1147 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1148 |
push_float(env, b-fa); |
push_float(env, b-fa); |
1149 |
|
|
1150 |
return; |
return; |
1151 |
} |
} |
1152 |
|
|
1153 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1154 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1155 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1156 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1157 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1158 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1159 |
push_float(env, fb-a); |
push_float(env, fb-a); |
1160 |
|
|
1171 |
int a, b; |
int a, b; |
1172 |
float fa, fb; |
float fa, fb; |
1173 |
|
|
1174 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1175 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1176 |
env->err=1; |
env->err= 1; |
1177 |
return; |
return; |
1178 |
} |
} |
1179 |
|
|
1180 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1181 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1182 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1183 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1184 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1185 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1186 |
push_int(env, b>a); |
push_int(env, b>a); |
1187 |
|
|
1188 |
return; |
return; |
1189 |
} |
} |
1190 |
|
|
1191 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1192 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1193 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1194 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1195 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1196 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1197 |
push_int(env, fb>fa); |
push_int(env, fb>fa); |
1198 |
|
|
1199 |
return; |
return; |
1200 |
} |
} |
1201 |
|
|
1202 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1203 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1204 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1205 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1206 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1207 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1208 |
push_int(env, b>fa); |
push_int(env, b>fa); |
1209 |
|
|
1210 |
return; |
return; |
1211 |
} |
} |
1212 |
|
|
1213 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1214 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1215 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1216 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1217 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1218 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1219 |
push_int(env, fb>a); |
push_int(env, fb>a); |
1220 |
|
|
1222 |
} |
} |
1223 |
|
|
1224 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1225 |
env->err=2; |
env->err= 2; |
1226 |
} |
} |
1227 |
|
|
1228 |
/* "<" */ |
/* "<" */ |
1249 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1250 |
value *copy_val(environment *env, value *old_value) |
value *copy_val(environment *env, value *old_value) |
1251 |
{ |
{ |
|
stackitem *old_item, *new_item, *prev_item; |
|
1252 |
value *new_value; |
value *new_value; |
1253 |
|
|
1254 |
protect(env, old_value); |
if(old_value==NULL) |
1255 |
|
return NULL; |
1256 |
|
|
1257 |
|
protect(old_value); |
1258 |
new_value= new_val(env); |
new_value= new_val(env); |
1259 |
protect(env, new_value); |
protect(new_value); |
1260 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1261 |
|
|
1262 |
switch(old_value->type){ |
switch(old_value->type){ |
1270 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1271 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1272 |
break; |
break; |
1273 |
case list: |
case tcons: |
1274 |
new_value->content.ptr= NULL; |
new_value= NULL; |
|
|
|
|
prev_item= NULL; |
|
|
old_item= (stackitem*)(old_value->content.ptr); |
|
1275 |
|
|
1276 |
while(old_item != NULL) { /* While list is not empty */ |
new_value->content.c= malloc(sizeof(cons)); |
1277 |
new_item= malloc(sizeof(stackitem)); |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
1278 |
new_item->item= copy_val(env, old_item->item); /* recurse */ |
CDR(new_value)= copy_val(env, CDR(old_value)); /* recurse */ |
|
new_item->next= NULL; |
|
|
if(prev_item != NULL) /* If this wasn't the first item */ |
|
|
prev_item->next= new_item; /* point the previous item to the |
|
|
new item */ |
|
|
else |
|
|
new_value->content.ptr= new_item; |
|
|
old_item= old_item->next; |
|
|
prev_item= new_item; |
|
|
} |
|
1279 |
break; |
break; |
1280 |
} |
} |
1281 |
|
|
1282 |
unprotect(env); unprotect(env); |
unprotect(old_value); unprotect(new_value); |
1283 |
|
|
1284 |
return new_value; |
return new_value; |
1285 |
} |
} |
1287 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1288 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1289 |
{ |
{ |
1290 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1291 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1292 |
env->err= 1; |
env->err= 1; |
1293 |
return; |
return; |
1294 |
} |
} |
1295 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, CAR(env->head))); |
1296 |
} |
} |
1297 |
|
|
1298 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1300 |
{ |
{ |
1301 |
int truth; |
int truth; |
1302 |
|
|
1303 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1304 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1305 |
env->err= 1; |
env->err= 1; |
1306 |
return; |
return; |
1307 |
} |
} |
1308 |
|
|
1309 |
if(env->head->next->item->type != integer) { |
if(CAR(CDR(env->head))->type != integer) { |
1310 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1311 |
env->err=2; |
env->err= 2; |
1312 |
return; |
return; |
1313 |
} |
} |
1314 |
|
|
1315 |
swap(env); |
swap(env); |
1316 |
if(env->err) return; |
if(env->err) return; |
1317 |
|
|
1318 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1319 |
|
|
1320 |
toss(env); |
toss(env); |
1321 |
if(env->err) return; |
if(env->err) return; |
1331 |
{ |
{ |
1332 |
int truth; |
int truth; |
1333 |
|
|
1334 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
1335 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
1336 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1337 |
env->err=1; |
env->err= 1; |
1338 |
return; |
return; |
1339 |
} |
} |
1340 |
|
|
1341 |
if(env->head->next->next->item->type != integer) { |
if(CAR(CDR(CDR(env->head)))->type!=integer) { |
1342 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1343 |
env->err=2; |
env->err= 2; |
1344 |
return; |
return; |
1345 |
} |
} |
1346 |
|
|
1347 |
rot(env); |
rot(env); |
1348 |
if(env->err) return; |
if(env->err) return; |
1349 |
|
|
1350 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1351 |
|
|
1352 |
toss(env); |
toss(env); |
1353 |
if(env->err) return; |
if(env->err) return; |
1368 |
int truth; |
int truth; |
1369 |
value *loop, *test; |
value *loop, *test; |
1370 |
|
|
1371 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1372 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1373 |
env->err=1; |
env->err= 1; |
1374 |
return; |
return; |
1375 |
} |
} |
1376 |
|
|
1377 |
loop= env->head->item; |
loop= CAR(env->head); |
1378 |
protect(env, loop); |
protect(loop); |
1379 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1380 |
|
|
1381 |
test= env->head->item; |
test= CAR(env->head); |
1382 |
protect(env, test); |
protect(test); |
1383 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1384 |
|
|
1385 |
do { |
do { |
1386 |
push_val(env, test); |
push_val(env, test); |
1387 |
eval(env); |
eval(env); |
1388 |
|
|
1389 |
if(env->head->item->type != integer) { |
if(CAR(env->head)->type != integer) { |
1390 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1391 |
env->err= 2; |
env->err= 2; |
1392 |
return; |
return; |
1393 |
} |
} |
1394 |
|
|
1395 |
truth= env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1396 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1397 |
|
|
1398 |
if(truth) { |
if(truth) { |
1404 |
|
|
1405 |
} while(truth); |
} while(truth); |
1406 |
|
|
1407 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(test); |
1408 |
} |
} |
1409 |
|
|
1410 |
|
|
1414 |
value *loop; |
value *loop; |
1415 |
int foo1, foo2; |
int foo1, foo2; |
1416 |
|
|
1417 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
1418 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
1419 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1420 |
env->err= 1; |
env->err= 1; |
1421 |
return; |
return; |
1422 |
} |
} |
1423 |
|
|
1424 |
if(env->head->next->item->type!=integer |
if(CAR(CDR(env->head))->type!=integer |
1425 |
|| env->head->next->next->item->type!=integer) { |
|| CAR(CDR(CDR(env->head)))->type!=integer) { |
1426 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1427 |
env->err= 2; |
env->err= 2; |
1428 |
return; |
return; |
1429 |
} |
} |
1430 |
|
|
1431 |
loop= env->head->item; |
loop= CAR(env->head); |
1432 |
protect(env, loop); |
protect(loop); |
1433 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1434 |
|
|
1435 |
foo2= env->head->item->content.i; |
foo2= CAR(env->head)->content.i; |
1436 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1437 |
|
|
1438 |
foo1= env->head->item->content.i; |
foo1= CAR(env->head)->content.i; |
1439 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1440 |
|
|
1441 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1453 |
foo1--; |
foo1--; |
1454 |
} |
} |
1455 |
} |
} |
1456 |
unprotect(env); |
unprotect(loop); |
1457 |
} |
} |
1458 |
|
|
1459 |
/* Variant of for-loop */ |
/* Variant of for-loop */ |
1460 |
extern void foreach(environment *env) |
extern void foreach(environment *env) |
1461 |
{ |
{ |
1462 |
value *loop, *foo; |
value *loop, *foo; |
1463 |
stackitem *iterator; |
value *iterator; |
1464 |
|
|
1465 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1466 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1467 |
env->err= 1; |
env->err= 1; |
1468 |
return; |
return; |
1469 |
} |
} |
1470 |
|
|
1471 |
if(env->head->next->item->type != list) { |
if(CAR(CDR(env->head))->type!=tcons) { |
1472 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1473 |
env->err= 2; |
env->err= 2; |
1474 |
return; |
return; |
1475 |
} |
} |
1476 |
|
|
1477 |
loop= env->head->item; |
loop= CAR(env->head); |
1478 |
protect(env, loop); |
protect(loop); |
1479 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1480 |
|
|
1481 |
foo= env->head->item; |
foo= CAR(env->head); |
1482 |
protect(env, foo); |
protect(foo); |
1483 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1484 |
|
|
1485 |
iterator= foo->content.ptr; |
iterator= foo; |
1486 |
|
|
1487 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
1488 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
1489 |
push_val(env, loop); |
push_val(env, loop); |
1490 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1491 |
iterator= iterator->next; |
if (iterator->type == tcons){ |
1492 |
|
iterator= CDR(iterator); |
1493 |
|
} else { |
1494 |
|
printerr("Bad Argument Type"); /* Improper list */ |
1495 |
|
env->err= 2; |
1496 |
|
break; |
1497 |
|
} |
1498 |
} |
} |
1499 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(foo); |
1500 |
} |
} |
1501 |
|
|
1502 |
/* "to" */ |
/* "to" */ |
1503 |
extern void to(environment *env) |
extern void to(environment *env) |
1504 |
{ |
{ |
1505 |
int ending, start, i; |
int ending, start, i; |
1506 |
stackitem *iterator, *temp; |
value *iterator, *temp; |
|
value *pack; |
|
1507 |
|
|
1508 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1509 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1510 |
env->err=1; |
env->err= 1; |
1511 |
return; |
return; |
1512 |
} |
} |
1513 |
|
|
1514 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1515 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1516 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1517 |
env->err=2; |
env->err= 2; |
1518 |
return; |
return; |
1519 |
} |
} |
1520 |
|
|
1521 |
ending= env->head->item->content.i; |
ending= CAR(env->head)->content.i; |
1522 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1523 |
start= env->head->item->content.i; |
start= CAR(env->head)->content.i; |
1524 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1525 |
|
|
1526 |
push_sym(env, "["); |
push_sym(env, "["); |
1534 |
} |
} |
1535 |
|
|
1536 |
iterator= env->head; |
iterator= env->head; |
|
pack= new_val(env); |
|
|
protect(env, pack); |
|
1537 |
|
|
1538 |
if(iterator==NULL |
if(iterator==NULL |
1539 |
|| (iterator->item->type==symb |
|| (CAR(iterator)->type==symb |
1540 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
1541 |
temp= NULL; |
temp= NULL; |
1542 |
toss(env); |
toss(env); |
1543 |
} else { |
} else { |
1544 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
1545 |
while(iterator->next!=NULL |
while(CDR(iterator)!=NULL |
1546 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
1547 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
1548 |
iterator= iterator->next; |
iterator= CDR(iterator); |
1549 |
|
|
1550 |
/* Extract list */ |
/* Extract list */ |
1551 |
temp= env->head; |
temp= env->head; |
1552 |
env->head= iterator->next; |
env->head= CDR(iterator); |
1553 |
iterator->next= NULL; |
CDR(iterator)= NULL; |
1554 |
|
|
|
pack->type= list; |
|
|
pack->content.ptr= temp; |
|
|
|
|
1555 |
if(env->head!=NULL) |
if(env->head!=NULL) |
1556 |
toss(env); |
toss(env); |
1557 |
} |
} |
1558 |
|
|
1559 |
/* Push list */ |
/* Push list */ |
1560 |
|
push_val(env, temp); |
|
push_val(env, pack); |
|
|
|
|
|
unprotect(env); |
|
1561 |
} |
} |
1562 |
|
|
1563 |
/* Read a string */ |
/* Read a string */ |
1596 |
} |
} |
1597 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1598 |
|
|
1599 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(CAR(env->head)->content.ptr))[0]=='\0'){ |
1600 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1601 |
return; |
return; |
1602 |
} |
} |
1603 |
|
|
1604 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(CAR(env->head)->content.ptr)+1); |
1605 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1606 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, CAR(env->head)->content.ptr); |
1607 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1608 |
} |
} |
1609 |
|
|
1656 |
{ |
{ |
1657 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1658 |
|
|
1659 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1660 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1661 |
env->err=1; |
env->err= 1; |
1662 |
return; |
return; |
1663 |
} |
} |
1664 |
|
|
1665 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1666 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1667 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1668 |
env->err=2; |
env->err= 2; |
1669 |
return; |
return; |
1670 |
} |
} |
1671 |
|
|
1672 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1673 |
toss(env); |
toss(env); |
1674 |
freq=env->head->item->content.i; |
freq= CAR(env->head)->content.i; |
1675 |
toss(env); |
toss(env); |
1676 |
|
|
1677 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1678 |
length */ |
length */ |
1679 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1680 |
timer ticks */ |
timer ticks */ |
1681 |
|
|
1682 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1683 |
|
|
1684 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1685 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1686 |
case 0: |
case 0: |
1687 |
usleep(dur); |
usleep(dur); |
1688 |
return; |
return; |
1689 |
case -1: |
case -1: |
1690 |
perror("beep"); |
perror("beep"); |
1691 |
env->err=5; |
env->err= 5; |
1692 |
return; |
return; |
1693 |
default: |
default: |
1694 |
abort(); |
abort(); |
1700 |
{ |
{ |
1701 |
int dur; |
int dur; |
1702 |
|
|
1703 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1704 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1705 |
env->err=1; |
env->err= 1; |
1706 |
return; |
return; |
1707 |
} |
} |
1708 |
|
|
1709 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
1710 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1711 |
env->err=2; |
env->err= 2; |
1712 |
return; |
return; |
1713 |
} |
} |
1714 |
|
|
1715 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1716 |
toss(env); |
toss(env); |
1717 |
|
|
1718 |
usleep(dur); |
usleep(dur); |
2009 |
int a, b; |
int a, b; |
2010 |
float fa, fb; |
float fa, fb; |
2011 |
|
|
2012 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2013 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2014 |
env->err=1; |
env->err= 1; |
2015 |
return; |
return; |
2016 |
} |
} |
2017 |
|
|
2018 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2019 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2020 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2021 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2022 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2023 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2024 |
push_int(env, b*a); |
push_int(env, b*a); |
2025 |
|
|
2026 |
return; |
return; |
2027 |
} |
} |
2028 |
|
|
2029 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2030 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2031 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2032 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2033 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2034 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2035 |
push_float(env, fb*fa); |
push_float(env, fb*fa); |
2036 |
|
|
2037 |
return; |
return; |
2038 |
} |
} |
2039 |
|
|
2040 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2041 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2042 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2043 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2044 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2045 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2046 |
push_float(env, b*fa); |
push_float(env, b*fa); |
2047 |
|
|
2048 |
return; |
return; |
2049 |
} |
} |
2050 |
|
|
2051 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2052 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2053 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2054 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2055 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2056 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2057 |
push_float(env, fb*a); |
push_float(env, fb*a); |
2058 |
|
|
2060 |
} |
} |
2061 |
|
|
2062 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2063 |
env->err=2; |
env->err= 2; |
2064 |
} |
} |
2065 |
|
|
2066 |
/* "/" */ |
/* "/" */ |
2069 |
int a, b; |
int a, b; |
2070 |
float fa, fb; |
float fa, fb; |
2071 |
|
|
2072 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2073 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2074 |
env->err=1; |
env->err= 1; |
2075 |
return; |
return; |
2076 |
} |
} |
2077 |
|
|
2078 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2079 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2080 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2081 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2082 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2083 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2084 |
push_float(env, b/a); |
push_float(env, b/a); |
2085 |
|
|
2086 |
return; |
return; |
2087 |
} |
} |
2088 |
|
|
2089 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2090 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2091 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2092 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2093 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2094 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2095 |
push_float(env, fb/fa); |
push_float(env, fb/fa); |
2096 |
|
|
2097 |
return; |
return; |
2098 |
} |
} |
2099 |
|
|
2100 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2101 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2102 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2103 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2104 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2105 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2106 |
push_float(env, b/fa); |
push_float(env, b/fa); |
2107 |
|
|
2108 |
return; |
return; |
2109 |
} |
} |
2110 |
|
|
2111 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2112 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2113 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2114 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2115 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2116 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2117 |
push_float(env, fb/a); |
push_float(env, fb/a); |
2118 |
|
|
2120 |
} |
} |
2121 |
|
|
2122 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2123 |
env->err=2; |
env->err= 2; |
2124 |
} |
} |
2125 |
|
|
2126 |
/* "mod" */ |
/* "mod" */ |
2128 |
{ |
{ |
2129 |
int a, b; |
int a, b; |
2130 |
|
|
2131 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2132 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2133 |
env->err= 1; |
env->err= 1; |
2134 |
return; |
return; |
2135 |
} |
} |
2136 |
|
|
2137 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2138 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2139 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2140 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2141 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2142 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2143 |
push_int(env, b%a); |
push_int(env, b%a); |
2144 |
|
|
2146 |
} |
} |
2147 |
|
|
2148 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2149 |
env->err=2; |
env->err= 2; |
2150 |
} |
} |
2151 |
|
|
2152 |
/* "div" */ |
/* "div" */ |
2154 |
{ |
{ |
2155 |
int a, b; |
int a, b; |
2156 |
|
|
2157 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2158 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2159 |
env->err= 1; |
env->err= 1; |
2160 |
return; |
return; |
2161 |
} |
} |
2162 |
|
|
2163 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2164 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2165 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2166 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2167 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2168 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2169 |
push_int(env, (int)b/a); |
push_int(env, (int)b/a); |
2170 |
|
|