1 |
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/* -*- coding: utf-8; -*- */ |
2 |
/* |
/* |
3 |
stack - an interactive interpreter for a stack-based language |
stack - an interactive interpreter for a stack-based language |
4 |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn |
21 |
Teddy Hogeborn <teddy@fukt.bth.se> |
Teddy Hogeborn <teddy@fukt.bth.se> |
22 |
*/ |
*/ |
23 |
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|
24 |
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#define CAR(X) ((X)->content.c->car) |
25 |
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#define CDR(X) ((X)->content.c->cdr) |
26 |
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|
27 |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
/* printf, sscanf, fgets, fprintf, fopen, perror */ |
28 |
#include <stdio.h> |
#include <stdio.h> |
29 |
/* exit, EXIT_SUCCESS, malloc, free */ |
/* exit, EXIT_SUCCESS, malloc, free */ |
38 |
#include <unistd.h> |
#include <unistd.h> |
39 |
/* EX_NOINPUT, EX_USAGE */ |
/* EX_NOINPUT, EX_USAGE */ |
40 |
#include <sysexits.h> |
#include <sysexits.h> |
41 |
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/* assert */ |
42 |
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#include <assert.h> |
43 |
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44 |
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#ifdef __linux__ |
45 |
/* mtrace, muntrace */ |
/* mtrace, muntrace */ |
46 |
#include <mcheck.h> |
#include <mcheck.h> |
47 |
/* ioctl */ |
/* ioctl */ |
48 |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
49 |
/* KDMKTONE */ |
/* KDMKTONE */ |
50 |
#include <linux/kd.h> |
#include <linux/kd.h> |
51 |
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#endif /* __linux__ */ |
52 |
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|
53 |
#include "stack.h" |
#include "stack.h" |
54 |
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|
57 |
{ |
{ |
58 |
int i; |
int i; |
59 |
|
|
60 |
env->gc_limit= 200; |
env->gc_limit= 400000; |
61 |
env->gc_count= 0; |
env->gc_count= 0; |
62 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
63 |
|
|
64 |
env->head= NULL; |
env->head= new_val(env); |
65 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
66 |
env->symbols[i]= NULL; |
env->symbols[i]= NULL; |
67 |
env->err= 0; |
env->err= 0; |
79 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
80 |
extern void toss(environment *env) |
extern void toss(environment *env) |
81 |
{ |
{ |
82 |
stackitem *temp= env->head; |
if(env->head->type==empty) { |
|
|
|
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if((env->head)==NULL) { |
|
83 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
84 |
env->err= 1; |
env->err= 1; |
85 |
return; |
return; |
86 |
} |
} |
87 |
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|
88 |
env->head= env->head->next; /* Remove the top stack item */ |
env->head= CDR(env->head); /* Remove the top stack item */ |
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free(temp); /* Free the old top stack item */ |
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env->gc_limit--; |
|
89 |
} |
} |
90 |
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|
91 |
/* Returns a pointer to a pointer to an element in the hash table. */ |
/* Returns a pointer to a pointer to an element in the hash table. */ |
123 |
value *nval= malloc(sizeof(value)); |
value *nval= malloc(sizeof(value)); |
124 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
125 |
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126 |
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assert(nval != NULL); |
127 |
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assert(nitem != NULL); |
128 |
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129 |
nval->content.ptr= NULL; |
nval->content.ptr= NULL; |
130 |
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nval->type= empty; |
131 |
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|
132 |
nitem->item= nval; |
nitem->item= nval; |
133 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
134 |
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|
135 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
136 |
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|
137 |
env->gc_count++; |
env->gc_count += sizeof(value); |
138 |
nval->gc.flag.mark= 0; |
nval->gc.flag.mark= 0; |
139 |
nval->gc.flag.protect= 0; |
nval->gc.flag.protect= 0; |
140 |
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|
145 |
Marked values are not collected by the GC. */ |
Marked values are not collected by the GC. */ |
146 |
inline void gc_mark(value *val) |
inline void gc_mark(value *val) |
147 |
{ |
{ |
148 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.mark) |
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if(val->gc.flag.mark) |
|
149 |
return; |
return; |
150 |
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151 |
val->gc.flag.mark= 1; |
val->gc.flag.mark= 1; |
152 |
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|
153 |
if(val->type==list) { |
if(val->type==tcons) { |
154 |
iterator= val->content.ptr; |
gc_mark(CAR(val)); |
155 |
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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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} |
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156 |
} |
} |
157 |
} |
} |
158 |
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|
167 |
/* Start GC */ |
/* Start GC */ |
168 |
extern void gc_init(environment *env) |
extern void gc_init(environment *env) |
169 |
{ |
{ |
170 |
stackitem *new_head= NULL, *titem, *iterator; |
stackitem *new_head= NULL, *titem; |
171 |
symbol *tsymb; |
symbol *tsymb; |
172 |
int i; |
int i; |
173 |
|
|
174 |
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if(env->interactive) |
175 |
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printf("Garbage collecting."); |
176 |
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|
177 |
/* Mark values on stack */ |
/* Mark values on stack */ |
178 |
iterator= env->head; |
gc_mark(env->head); |
179 |
while(iterator!=NULL) { |
|
180 |
gc_mark(iterator->item); |
if(env->interactive) |
181 |
iterator= iterator->next; |
printf("."); |
182 |
} |
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183 |
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|
184 |
/* Mark values in hashtable */ |
/* Mark values in hashtable */ |
185 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) |
186 |
tsymb= env->symbols[i]; |
for(tsymb= env->symbols[i]; tsymb!=NULL; tsymb= tsymb->next) |
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while(tsymb!=NULL) { |
|
187 |
if (tsymb->val != NULL) |
if (tsymb->val != NULL) |
188 |
gc_mark(tsymb->val); |
gc_mark(tsymb->val); |
189 |
tsymb= tsymb->next; |
|
190 |
} |
|
191 |
} |
if(env->interactive) |
192 |
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printf("."); |
193 |
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194 |
env->gc_count= 0; |
env->gc_count= 0; |
195 |
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197 |
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198 |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
199 |
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|
200 |
switch(env->gc_ref->item->type) { /* Remove content */ |
/* Remove content */ |
201 |
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switch(env->gc_ref->item->type){ |
202 |
case string: |
case string: |
203 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
204 |
break; |
break; |
205 |
case list: |
case tcons: |
206 |
while(env->gc_ref->item->content.ptr!=NULL) { |
free(env->gc_ref->item->content.c); |
207 |
titem= env->gc_ref->item->content.ptr; |
break; |
208 |
env->gc_ref->item->content.ptr= titem->next; |
case empty: |
209 |
free(titem); |
case integer: |
210 |
} |
case tfloat: |
211 |
default: |
case func: |
212 |
|
case symb: |
213 |
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/* Symbol strings are freed when walking the hash table */ |
214 |
} |
} |
215 |
|
|
216 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
217 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
218 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
219 |
env->gc_ref= titem; |
env->gc_ref= titem; |
220 |
continue; |
continue; |
221 |
} |
} |
222 |
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#ifdef DEBUG |
223 |
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printf("Kept value (%p)", env->gc_ref->item); |
224 |
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if(env->gc_ref->item->gc.flag.mark) |
225 |
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printf(" (marked)"); |
226 |
|
if(env->gc_ref->item->gc.flag.protect) |
227 |
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printf(" (protected)"); |
228 |
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switch(env->gc_ref->item->type){ |
229 |
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case integer: |
230 |
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printf(" integer: %d", env->gc_ref->item->content.i); |
231 |
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break; |
232 |
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case func: |
233 |
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printf(" func: %p", env->gc_ref->item->content.ptr); |
234 |
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break; |
235 |
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case symb: |
236 |
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printf(" symb: %s", env->gc_ref->item->content.sym->id); |
237 |
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break; |
238 |
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case tcons: |
239 |
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printf(" tcons: %p\t%p", env->gc_ref->item->content.c->car, |
240 |
|
env->gc_ref->item->content.c->cdr); |
241 |
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break; |
242 |
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default: |
243 |
|
printf(" <unknown %d>", (env->gc_ref->item->type)); |
244 |
|
} |
245 |
|
printf("\n"); |
246 |
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#endif /* DEBUG */ |
247 |
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|
248 |
|
/* Keep values */ |
249 |
|
env->gc_count += sizeof(value); |
250 |
|
if(env->gc_ref->item->type==string) |
251 |
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env->gc_count += strlen(env->gc_ref->item->content.ptr)+1; |
252 |
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/* Keep values */ |
|
253 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
254 |
env->gc_ref->next= new_head; |
env->gc_ref->next= new_head; |
255 |
new_head= env->gc_ref; |
new_head= env->gc_ref; |
256 |
new_head->item->gc.flag.mark= 0; |
new_head->item->gc.flag.mark= 0; |
257 |
env->gc_ref= titem; |
env->gc_ref= titem; |
|
env->gc_count++; |
|
258 |
} |
} |
259 |
|
|
260 |
env->gc_limit= env->gc_count*2; |
if (env->gc_limit < env->gc_count*2) |
261 |
|
env->gc_limit= env->gc_count*2; |
262 |
|
|
263 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
264 |
|
|
265 |
|
if(env->interactive) |
266 |
|
printf("done (%d bytes still allocated)\n", env->gc_count); |
267 |
|
|
268 |
} |
} |
269 |
|
|
270 |
/* Protect values from GC */ |
/* Protect values from GC */ |
271 |
void protect(value *val) |
void protect(value *val) |
272 |
{ |
{ |
273 |
stackitem *iterator; |
if(val==NULL || val->gc.flag.protect) |
|
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|
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if(val->gc.flag.protect) |
|
274 |
return; |
return; |
275 |
|
|
276 |
val->gc.flag.protect= 1; |
val->gc.flag.protect= 1; |
277 |
|
|
278 |
if(val->type==list) { |
if(val->type==tcons) { |
279 |
iterator= val->content.ptr; |
protect(CAR(val)); |
280 |
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protect(CDR(val)); |
|
while(iterator!=NULL) { |
|
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protect(iterator->item); |
|
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iterator= iterator->next; |
|
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} |
|
281 |
} |
} |
282 |
} |
} |
283 |
|
|
284 |
/* Unprotect values from GC */ |
/* Unprotect values from GC */ |
285 |
void unprotect(value *val) |
void unprotect(value *val) |
286 |
{ |
{ |
287 |
stackitem *iterator; |
if(val==NULL || !(val->gc.flag.protect)) |
|
|
|
|
if(!(val->gc.flag.protect)) |
|
288 |
return; |
return; |
289 |
|
|
290 |
val->gc.flag.protect= 0; |
val->gc.flag.protect= 0; |
291 |
|
|
292 |
if(val->type==list) { |
if(val->type==tcons) { |
293 |
iterator= val->content.ptr; |
unprotect(CAR(val)); |
294 |
|
unprotect(CDR(val)); |
|
while(iterator!=NULL) { |
|
|
unprotect(iterator->item); |
|
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iterator= iterator->next; |
|
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} |
|
295 |
} |
} |
296 |
} |
} |
297 |
|
|
298 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
299 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
300 |
{ |
{ |
301 |
stackitem *new_item= malloc(sizeof(stackitem)); |
value *new_value= new_val(env); |
302 |
new_item->item= val; |
|
303 |
new_item->next= env->head; |
new_value->content.c= malloc(sizeof(pair)); |
304 |
env->head= new_item; |
assert(new_value->content.c!=NULL); |
305 |
|
env->gc_count += sizeof(pair); |
306 |
|
new_value->type= tcons; |
307 |
|
CAR(new_value)= val; |
308 |
|
CDR(new_value)= env->head; |
309 |
|
env->head= new_value; |
310 |
} |
} |
311 |
|
|
312 |
/* Push an integer onto the stack */ |
/* Push an integer onto the stack */ |
335 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
336 |
{ |
{ |
337 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
338 |
|
int length= strlen(in_string)+1; |
339 |
|
|
340 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(length); |
341 |
|
assert(new_value != NULL); |
342 |
|
env->gc_count += length; |
343 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
344 |
new_value->type= string; |
new_value->type= string; |
345 |
|
|
353 |
char *new_string, *current; |
char *new_string, *current; |
354 |
|
|
355 |
new_string= malloc((strlen(old_string)*2)+4); |
new_string= malloc((strlen(old_string)*2)+4); |
356 |
|
assert(new_string != NULL); |
357 |
strcpy(new_string, "sx_"); /* Stack eXternal */ |
strcpy(new_string, "sx_"); /* Stack eXternal */ |
358 |
current= new_string+3; |
current= new_string+3; |
359 |
while(old_string[0] != '\0'){ |
while(old_string[0] != '\0'){ |
371 |
{ |
{ |
372 |
char *new_string; |
char *new_string; |
373 |
|
|
374 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
375 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
376 |
env->err= 1; |
env->err= 1; |
377 |
return; |
return; |
378 |
} |
} |
379 |
|
|
380 |
if(env->head->item->type!=string) { |
if(CAR(env->head)->type!=string) { |
381 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
382 |
env->err= 2; |
env->err= 2; |
383 |
return; |
return; |
384 |
} |
} |
385 |
|
|
386 |
new_string= mangle_str((const char *)(env->head->item->content.ptr)); |
new_string= |
387 |
|
mangle_str((const char *)(CAR(env->head)->content.ptr)); |
388 |
|
|
389 |
toss(env); |
toss(env); |
390 |
if(env->err) return; |
if(env->err) return; |
423 |
|
|
424 |
/* Create a new symbol */ |
/* Create a new symbol */ |
425 |
(*new_symbol)= malloc(sizeof(symbol)); |
(*new_symbol)= malloc(sizeof(symbol)); |
426 |
|
assert((*new_symbol) != NULL); |
427 |
(*new_symbol)->val= NULL; /* undefined value */ |
(*new_symbol)->val= NULL; /* undefined value */ |
428 |
(*new_symbol)->next= NULL; |
(*new_symbol)->next= NULL; |
429 |
(*new_symbol)->id= malloc(strlen(in_string)+1); |
(*new_symbol)->id= malloc(strlen(in_string)+1); |
430 |
|
assert((*new_symbol)->id != NULL); |
431 |
strcpy((*new_symbol)->id, in_string); |
strcpy((*new_symbol)->id, in_string); |
432 |
|
|
433 |
/* Intern the new symbol in the hash table */ |
/* Intern the new symbol in the hash table */ |
470 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
471 |
extern void type(environment *env) |
extern void type(environment *env) |
472 |
{ |
{ |
473 |
int typenum; |
if(env->head->type==empty) { |
|
|
|
|
if((env->head)==NULL) { |
|
474 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
475 |
env->err=1; |
env->err= 1; |
476 |
return; |
return; |
477 |
} |
} |
478 |
typenum=env->head->item->type; |
|
479 |
toss(env); |
switch(CAR(env->head)->type){ |
480 |
switch(typenum){ |
case empty: |
481 |
|
push_sym(env, "empty"); |
482 |
|
break; |
483 |
case integer: |
case integer: |
484 |
push_sym(env, "integer"); |
push_sym(env, "integer"); |
485 |
break; |
break; |
495 |
case func: |
case func: |
496 |
push_sym(env, "function"); |
push_sym(env, "function"); |
497 |
break; |
break; |
498 |
case list: |
case tcons: |
499 |
push_sym(env, "list"); |
push_sym(env, "pair"); |
500 |
break; |
break; |
501 |
} |
} |
502 |
|
swap(env); |
503 |
|
if (env->err) return; |
504 |
|
toss(env); |
505 |
} |
} |
506 |
|
|
507 |
/* Prints the top element of the stack. */ |
/* Print a value */ |
508 |
void print_h(stackitem *stack_head, int noquote) |
void print_val(value *val, int noquote, stackitem *stack) |
509 |
{ |
{ |
510 |
switch(stack_head->item->type) { |
stackitem *titem, *tstack; |
511 |
|
int depth; |
512 |
|
|
513 |
|
switch(val->type) { |
514 |
|
case empty: |
515 |
|
printf("[]"); |
516 |
|
break; |
517 |
case integer: |
case integer: |
518 |
printf("%d", stack_head->item->content.i); |
printf("%d", val->content.i); |
519 |
break; |
break; |
520 |
case tfloat: |
case tfloat: |
521 |
printf("%f", stack_head->item->content.f); |
printf("%f", val->content.f); |
522 |
break; |
break; |
523 |
case string: |
case string: |
524 |
if(noquote) |
if(noquote) |
525 |
printf("%s", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)(val->content.ptr)); |
526 |
else |
else |
527 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("\"%s\"", (char*)(val->content.ptr)); |
528 |
break; |
break; |
529 |
case symb: |
case symb: |
530 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", val->content.sym->id); |
531 |
break; |
break; |
532 |
case func: |
case func: |
533 |
printf("#<function %p>", (funcp)(stack_head->item->content.ptr)); |
printf("#<function %p>", (funcp)(val->content.ptr)); |
534 |
break; |
break; |
535 |
case list: |
case tcons: |
|
/* A list is just a stack, so make stack_head point to it */ |
|
|
stack_head=(stackitem *)(stack_head->item->content.ptr); |
|
536 |
printf("[ "); |
printf("[ "); |
537 |
while(stack_head != NULL) { |
tstack= stack; |
538 |
print_h(stack_head, noquote); |
do { |
539 |
printf(" "); |
titem=malloc(sizeof(stackitem)); |
540 |
stack_head=stack_head->next; |
assert(titem != NULL); |
541 |
|
titem->item=val; |
542 |
|
titem->next=tstack; |
543 |
|
tstack=titem; /* Put it on the stack */ |
544 |
|
/* Search a stack of values being printed to see if we are already |
545 |
|
printing this value */ |
546 |
|
titem=tstack; |
547 |
|
depth=0; |
548 |
|
while(titem != NULL && titem->item != CAR(val)){ |
549 |
|
titem=titem->next; |
550 |
|
depth++; |
551 |
|
} |
552 |
|
if(titem != NULL){ /* If we found it on the stack, */ |
553 |
|
printf("#%d#", depth); /* print a depth reference */ |
554 |
|
} else { |
555 |
|
print_val(CAR(val), noquote, tstack); |
556 |
|
} |
557 |
|
val= CDR(val); |
558 |
|
switch(val->type){ |
559 |
|
case empty: |
560 |
|
break; |
561 |
|
case tcons: |
562 |
|
/* Search a stack of values being printed to see if we are already |
563 |
|
printing this value */ |
564 |
|
titem=tstack; |
565 |
|
depth=0; |
566 |
|
while(titem != NULL && titem->item != val){ |
567 |
|
titem=titem->next; |
568 |
|
depth++; |
569 |
|
} |
570 |
|
if(titem != NULL){ /* If we found it on the stack, */ |
571 |
|
printf(" . #%d#", depth); /* print a depth reference */ |
572 |
|
} else { |
573 |
|
printf(" "); |
574 |
|
} |
575 |
|
break; |
576 |
|
default: |
577 |
|
printf(" . "); /* Improper list */ |
578 |
|
print_val(val, noquote, tstack); |
579 |
|
} |
580 |
|
} while(val->type == tcons && titem == NULL); |
581 |
|
titem=tstack; |
582 |
|
while(titem != stack){ |
583 |
|
tstack=titem->next; |
584 |
|
free(titem); |
585 |
|
titem=tstack; |
586 |
} |
} |
587 |
printf("]"); |
printf(" ]"); |
588 |
break; |
break; |
589 |
} |
} |
590 |
} |
} |
591 |
|
|
592 |
extern void print_(environment *env) |
extern void print_(environment *env) |
593 |
{ |
{ |
594 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
595 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
596 |
env->err=1; |
env->err= 1; |
597 |
return; |
return; |
598 |
} |
} |
599 |
print_h(env->head, 0); |
print_val(CAR(env->head), 0, NULL); |
600 |
nl(); |
nl(); |
601 |
} |
} |
602 |
|
|
610 |
|
|
611 |
extern void princ_(environment *env) |
extern void princ_(environment *env) |
612 |
{ |
{ |
613 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
614 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
615 |
env->err=1; |
env->err= 1; |
616 |
return; |
return; |
617 |
} |
} |
618 |
print_h(env->head, 1); |
print_val(CAR(env->head), 1, NULL); |
619 |
} |
} |
620 |
|
|
621 |
/* Prints the top element of the stack and then discards it. */ |
/* Prints the top element of the stack and then discards it. */ |
627 |
} |
} |
628 |
|
|
629 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
630 |
void print_st(stackitem *stack_head, long counter) |
void print_st(value *stack_head, long counter) |
631 |
{ |
{ |
632 |
if(stack_head->next != NULL) |
if(CDR(stack_head)->type != empty) |
633 |
print_st(stack_head->next, counter+1); |
print_st(CDR(stack_head), counter+1); |
634 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
635 |
print_h(stack_head, 0); |
print_val(CAR(stack_head), 0, NULL); |
636 |
nl(); |
nl(); |
637 |
} |
} |
638 |
|
|
639 |
/* Prints the stack. */ |
/* Prints the stack. */ |
640 |
extern void printstack(environment *env) |
extern void printstack(environment *env) |
641 |
{ |
{ |
642 |
if(env->head == NULL) { |
if(env->head->type == empty) { |
643 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
644 |
return; |
return; |
645 |
} |
} |
650 |
/* Swap the two top elements on the stack. */ |
/* Swap the two top elements on the stack. */ |
651 |
extern void swap(environment *env) |
extern void swap(environment *env) |
652 |
{ |
{ |
653 |
stackitem *temp= env->head; |
value *temp= env->head; |
654 |
|
|
655 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head->type == empty || CDR(env->head)->type == empty) { |
656 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
657 |
env->err=1; |
env->err=1; |
658 |
return; |
return; |
659 |
} |
} |
660 |
|
|
661 |
env->head= env->head->next; |
env->head= CDR(env->head); |
662 |
temp->next= env->head->next; |
CDR(temp)= CDR(env->head); |
663 |
env->head->next= temp; |
CDR(env->head)= temp; |
664 |
} |
} |
665 |
|
|
666 |
/* Rotate the first three elements on the stack. */ |
/* Rotate the first three elements on the stack. */ |
667 |
extern void rot(environment *env) |
extern void rot(environment *env) |
668 |
{ |
{ |
669 |
stackitem *temp= env->head; |
value *temp= env->head; |
670 |
|
|
671 |
if(env->head==NULL || env->head->next==NULL |
if(env->head->type == empty || CDR(env->head)->type == empty |
672 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type == empty) { |
673 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
674 |
env->err=1; |
env->err= 1; |
675 |
return; |
return; |
676 |
} |
} |
677 |
|
|
678 |
env->head= env->head->next->next; |
env->head= CDR(CDR(env->head)); |
679 |
temp->next->next= env->head->next; |
CDR(CDR(temp))= CDR(env->head); |
680 |
env->head->next= temp; |
CDR(env->head)= temp; |
681 |
} |
} |
682 |
|
|
683 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
685 |
{ |
{ |
686 |
value *val; |
value *val; |
687 |
|
|
688 |
if(env->head == NULL) { |
if(env->head->type==empty) { |
689 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
690 |
env->err=1; |
env->err= 1; |
691 |
return; |
return; |
692 |
} |
} |
693 |
|
|
694 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
695 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
696 |
env->err=2; |
env->err= 2; |
697 |
return; |
return; |
698 |
} |
} |
699 |
|
|
700 |
val=((symbol *)(env->head->item->content.ptr))->val; |
val= CAR(env->head)->content.sym->val; |
701 |
if(val == NULL){ |
if(val == NULL){ |
702 |
printerr("Unbound Variable"); |
printerr("Unbound Variable"); |
703 |
env->err=3; |
env->err= 3; |
704 |
return; |
return; |
705 |
} |
} |
706 |
protect(val); |
push_val(env, val); /* Return the symbol's bound value */ |
707 |
toss(env); /* toss the symbol */ |
swap(env); |
708 |
|
if(env->err) return; |
709 |
|
toss(env); /* toss the symbol */ |
710 |
if(env->err) return; |
if(env->err) return; |
|
push_val(env, val); /* Return its bound value */ |
|
|
unprotect(val); |
|
711 |
} |
} |
712 |
|
|
713 |
/* 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 |
717 |
{ |
{ |
718 |
funcp in_func; |
funcp in_func; |
719 |
value* temp_val; |
value* temp_val; |
720 |
stackitem* iterator; |
value* iterator; |
721 |
|
|
722 |
eval_start: |
eval_start: |
723 |
|
|
724 |
gc_maybe(env); |
gc_maybe(env); |
725 |
|
|
726 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
727 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
728 |
env->err=1; |
env->err= 1; |
729 |
return; |
return; |
730 |
} |
} |
731 |
|
|
732 |
switch(env->head->item->type) { |
switch(CAR(env->head)->type) { |
733 |
/* if it's a symbol */ |
/* if it's a symbol */ |
734 |
case symb: |
case symb: |
735 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
736 |
if(env->err) return; |
if(env->err) return; |
737 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(CAR(env->head)->type!=symb){ /* don't recurse symbols */ |
738 |
goto eval_start; |
goto eval_start; |
739 |
} |
} |
740 |
return; |
return; |
741 |
|
|
742 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
743 |
case func: |
case func: |
744 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(CAR(env->head)->content.ptr); |
745 |
toss(env); |
toss(env); |
746 |
if(env->err) return; |
if(env->err) return; |
747 |
return in_func(env); |
return in_func(env); |
748 |
|
|
749 |
/* If it's a list */ |
/* If it's a list */ |
750 |
case list: |
case tcons: |
751 |
temp_val= env->head->item; |
temp_val= CAR(env->head); |
752 |
protect(temp_val); |
protect(temp_val); |
753 |
|
|
754 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
755 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= temp_val; |
756 |
|
|
757 |
while(iterator!=NULL) { |
while(iterator->type != empty) { |
758 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
759 |
|
|
760 |
if(env->head->item->type==symb |
if(CAR(env->head)->type==symb |
761 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& CAR(env->head)->content.sym->id[0]==';') { |
762 |
toss(env); |
toss(env); |
763 |
if(env->err) return; |
if(env->err) return; |
764 |
|
|
765 |
if(iterator->next == NULL){ |
if(CDR(iterator)->type == empty){ |
766 |
goto eval_start; |
goto eval_start; |
767 |
} |
} |
768 |
eval(env); |
eval(env); |
769 |
if(env->err) return; |
if(env->err) return; |
770 |
} |
} |
771 |
iterator= iterator->next; |
if (CDR(iterator)->type == empty || CDR(iterator)->type == tcons) |
772 |
|
iterator= CDR(iterator); |
773 |
|
else { |
774 |
|
printerr("Bad Argument Type"); /* Improper list */ |
775 |
|
env->err= 2; |
776 |
|
return; |
777 |
|
} |
778 |
} |
} |
779 |
unprotect(temp_val); |
unprotect(temp_val); |
780 |
return; |
return; |
781 |
|
|
782 |
default: |
case empty: |
783 |
|
case integer: |
784 |
|
case tfloat: |
785 |
|
case string: |
786 |
return; |
return; |
787 |
} |
} |
788 |
} |
} |
790 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
791 |
extern void rev(environment *env) |
extern void rev(environment *env) |
792 |
{ |
{ |
793 |
stackitem *old_head, *new_head, *item; |
value *old_head, *new_head, *item; |
794 |
|
|
795 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
796 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
797 |
env->err= 1; |
env->err= 1; |
798 |
return; |
return; |
799 |
} |
} |
800 |
|
|
801 |
if(env->head->item->type!=list) { |
if(CAR(env->head)->type==empty) |
802 |
|
return; /* Don't reverse an empty list */ |
803 |
|
|
804 |
|
if(CAR(env->head)->type!=tcons) { |
805 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
806 |
env->err= 2; |
env->err= 2; |
807 |
return; |
return; |
808 |
} |
} |
809 |
|
|
810 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= CAR(env->head); |
811 |
new_head= NULL; |
new_head= new_val(env); |
812 |
while(old_head != NULL){ |
while(old_head->type != empty) { |
813 |
item= old_head; |
item= old_head; |
814 |
old_head= old_head->next; |
old_head= CDR(old_head); |
815 |
item->next= new_head; |
CDR(item)= new_head; |
816 |
new_head= item; |
new_head= item; |
817 |
} |
} |
818 |
env->head->item->content.ptr= new_head; |
CAR(env->head)= new_head; |
819 |
} |
} |
820 |
|
|
821 |
/* Make a list. */ |
/* Make a list. */ |
822 |
extern void pack(environment *env) |
extern void pack(environment *env) |
823 |
{ |
{ |
824 |
stackitem *iterator, *temp; |
value *iterator, *temp, *ending; |
|
value *pack; |
|
825 |
|
|
826 |
iterator= env->head; |
ending=new_val(env); |
|
pack= new_val(env); |
|
|
protect(pack); |
|
827 |
|
|
828 |
if(iterator==NULL |
iterator= env->head; |
829 |
|| (iterator->item->type==symb |
if(iterator->type == empty |
830 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
|| (CAR(iterator)->type==symb |
831 |
temp= NULL; |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
832 |
|
temp= ending; |
833 |
toss(env); |
toss(env); |
834 |
} else { |
} else { |
835 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
836 |
while(iterator->next!=NULL |
while(CDR(iterator)->type != empty |
837 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
838 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
839 |
iterator= iterator->next; |
iterator= CDR(iterator); |
840 |
|
|
841 |
/* Extract list */ |
/* Extract list */ |
842 |
temp= env->head; |
temp= env->head; |
843 |
env->head= iterator->next; |
env->head= CDR(iterator); |
844 |
iterator->next= NULL; |
CDR(iterator)= ending; |
845 |
|
|
846 |
pack->type= list; |
if(env->head->type != empty) |
|
pack->content.ptr= temp; |
|
|
|
|
|
if(env->head!=NULL) |
|
847 |
toss(env); |
toss(env); |
848 |
} |
} |
849 |
|
|
850 |
/* Push list */ |
/* Push list */ |
851 |
|
|
852 |
push_val(env, pack); |
push_val(env, temp); |
853 |
rev(env); |
rev(env); |
|
|
|
|
unprotect(pack); |
|
854 |
} |
} |
855 |
|
|
856 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
857 |
extern void expand(environment *env) |
extern void expand(environment *env) |
858 |
{ |
{ |
859 |
stackitem *temp, *new_head; |
value *temp, *new_head; |
860 |
|
|
861 |
/* Is top element a list? */ |
/* Is top element a list? */ |
862 |
if(env->head==NULL) { |
if(env->head->type==empty) { |
863 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
864 |
env->err= 1; |
env->err= 1; |
865 |
return; |
return; |
866 |
} |
} |
867 |
if(env->head->item->type!=list) { |
|
868 |
|
if(CAR(env->head)->type!=tcons) { |
869 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
870 |
env->err= 2; |
env->err= 2; |
871 |
return; |
return; |
877 |
return; |
return; |
878 |
|
|
879 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
880 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= CAR(env->head); |
881 |
|
|
882 |
toss(env); |
toss(env); |
883 |
|
|
884 |
/* Find the end of the list */ |
/* Find the end of the list */ |
885 |
while(temp->next!=NULL) |
while(CDR(temp)->type != empty) { |
886 |
temp= temp->next; |
if (CDR(temp)->type == tcons) |
887 |
|
temp= CDR(temp); |
888 |
|
else { |
889 |
|
printerr("Bad Argument Type"); /* Improper list */ |
890 |
|
env->err= 2; |
891 |
|
return; |
892 |
|
} |
893 |
|
} |
894 |
|
|
895 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
896 |
temp->next= env->head; |
CDR(temp)= env->head; |
897 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
898 |
|
|
899 |
} |
} |
902 |
extern void eq(environment *env) |
extern void eq(environment *env) |
903 |
{ |
{ |
904 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
905 |
|
|
906 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
907 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
908 |
env->err= 1; |
env->err= 1; |
909 |
return; |
return; |
910 |
} |
} |
911 |
|
|
912 |
left= env->head->item->content.ptr; |
left= CAR(env->head)->content.ptr; |
913 |
swap(env); |
right= CAR(CDR(env->head))->content.ptr; |
|
right= env->head->item->content.ptr; |
|
|
result= (left==right); |
|
|
|
|
914 |
toss(env); toss(env); |
toss(env); toss(env); |
915 |
push_int(env, result); |
|
916 |
|
push_int(env, left==right); |
917 |
} |
} |
918 |
|
|
919 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
921 |
{ |
{ |
922 |
int val; |
int val; |
923 |
|
|
924 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
925 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
926 |
env->err= 1; |
env->err= 1; |
927 |
return; |
return; |
928 |
} |
} |
929 |
|
|
930 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
931 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
932 |
env->err= 2; |
env->err= 2; |
933 |
return; |
return; |
934 |
} |
} |
935 |
|
|
936 |
val= env->head->item->content.i; |
val= CAR(env->head)->content.i; |
937 |
toss(env); |
toss(env); |
938 |
push_int(env, !val); |
push_int(env, !val); |
939 |
} |
} |
952 |
symbol *sym; |
symbol *sym; |
953 |
|
|
954 |
/* 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 */ |
955 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
956 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
957 |
env->err= 1; |
env->err= 1; |
958 |
return; |
return; |
959 |
} |
} |
960 |
|
|
961 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
962 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
963 |
env->err= 2; |
env->err= 2; |
964 |
return; |
return; |
965 |
} |
} |
966 |
|
|
967 |
/* long names are a pain */ |
/* long names are a pain */ |
968 |
sym= env->head->item->content.ptr; |
sym= CAR(env->head)->content.ptr; |
969 |
|
|
970 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
971 |
sym->val= env->head->next->item; |
sym->val= CAR(CDR(env->head)); |
972 |
|
|
973 |
toss(env); toss(env); |
toss(env); toss(env); |
974 |
} |
} |
991 |
env->gc_limit= 0; |
env->gc_limit= 0; |
992 |
gc_maybe(env); |
gc_maybe(env); |
993 |
|
|
994 |
|
words(env); |
995 |
|
|
996 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
997 |
free(env->free_string); |
free(env->free_string); |
998 |
|
|
999 |
|
#ifdef __linux__ |
1000 |
muntrace(); |
muntrace(); |
1001 |
|
#endif |
1002 |
|
|
1003 |
exit(EXIT_SUCCESS); |
exit(EXIT_SUCCESS); |
1004 |
} |
} |
1006 |
/* Clear stack */ |
/* Clear stack */ |
1007 |
extern void clear(environment *env) |
extern void clear(environment *env) |
1008 |
{ |
{ |
1009 |
while(env->head!=NULL) |
while(env->head->type != empty) |
1010 |
toss(env); |
toss(env); |
1011 |
} |
} |
1012 |
|
|
1019 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) { |
1020 |
temp= env->symbols[i]; |
temp= env->symbols[i]; |
1021 |
while(temp!=NULL) { |
while(temp!=NULL) { |
1022 |
|
#ifdef DEBUG |
1023 |
|
if (temp->val != NULL && temp->val->gc.flag.protect) |
1024 |
|
printf("(protected) "); |
1025 |
|
#endif /* DEBUG */ |
1026 |
printf("%s\n", temp->id); |
printf("%s\n", temp->id); |
1027 |
temp= temp->next; |
temp= temp->next; |
1028 |
} |
} |
1045 |
extern void forget(environment *env) |
extern void forget(environment *env) |
1046 |
{ |
{ |
1047 |
char* sym_id; |
char* sym_id; |
|
stackitem *stack_head= env->head; |
|
1048 |
|
|
1049 |
if(stack_head==NULL) { |
if(env->head->type==empty) { |
1050 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1051 |
env->err=1; |
env->err= 1; |
1052 |
return; |
return; |
1053 |
} |
} |
1054 |
|
|
1055 |
if(stack_head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
1056 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1057 |
env->err=2; |
env->err= 2; |
1058 |
return; |
return; |
1059 |
} |
} |
1060 |
|
|
1061 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= CAR(env->head)->content.sym->id; |
1062 |
toss(env); |
toss(env); |
1063 |
|
|
1064 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
1076 |
|
|
1077 |
int c; /* getopt option character */ |
int c; /* getopt option character */ |
1078 |
|
|
1079 |
|
#ifdef __linux__ |
1080 |
mtrace(); |
mtrace(); |
1081 |
|
#endif |
1082 |
|
|
1083 |
init_env(&myenv); |
init_env(&myenv); |
1084 |
|
|
1092 |
break; |
break; |
1093 |
case '?': |
case '?': |
1094 |
fprintf (stderr, |
fprintf (stderr, |
1095 |
"Unknown option character `\\x%x'.\n", |
"Unknown option character '\\x%x'.\n", |
1096 |
optopt); |
optopt); |
1097 |
return EX_USAGE; |
return EX_USAGE; |
1098 |
default: |
default: |
1111 |
if(myenv.interactive) { |
if(myenv.interactive) { |
1112 |
printf("Stack version $Revision$\n\ |
printf("Stack version $Revision$\n\ |
1113 |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
Copyright (C) 2002 Mats Alritzson and Teddy Hogeborn\n\ |
1114 |
Stack comes with ABSOLUTELY NO WARRANTY; for details type `warranty;'.\n\ |
Stack comes with ABSOLUTELY NO WARRANTY; for details type 'warranty;'.\n\ |
1115 |
This is free software, and you are welcome to redistribute it\n\ |
This is free software, and you are welcome to redistribute it\n\ |
1116 |
under certain conditions; type `copying;' for details.\n"); |
under certain conditions; type 'copying;' for details.\n"); |
1117 |
} |
} |
1118 |
|
|
1119 |
while(1) { |
while(1) { |
1128 |
} |
} |
1129 |
myenv.err=0; |
myenv.err=0; |
1130 |
} |
} |
1131 |
sx_72656164(&myenv); |
sx_72656164(&myenv); /* "read" */ |
1132 |
if (myenv.err==4) { |
if (myenv.err==4) { /* EOF */ |
1133 |
return EXIT_SUCCESS; /* EOF */ |
myenv.err=0; |
1134 |
} else if(myenv.head!=NULL |
quit(&myenv); |
1135 |
&& myenv.head->item->type==symb |
} else if(myenv.head->type!=empty |
1136 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& CAR(myenv.head)->type==symb |
1137 |
|
&& CAR(myenv.head)->content.sym->id[0] |
1138 |
|
==';') { |
1139 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1140 |
eval(&myenv); |
eval(&myenv); |
1141 |
} |
} |
1154 |
char* new_string; |
char* new_string; |
1155 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1156 |
|
|
1157 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1158 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1159 |
env->err= 1; |
env->err= 1; |
1160 |
return; |
return; |
1161 |
} |
} |
1162 |
|
|
1163 |
if(env->head->item->type==string |
if(CAR(env->head)->type==string |
1164 |
&& env->head->next->item->type==string) { |
&& CAR(CDR(env->head))->type==string) { |
1165 |
a_val= env->head->item; |
a_val= CAR(env->head); |
1166 |
b_val= env->head->next->item; |
b_val= CAR(CDR(env->head)); |
1167 |
protect(a_val); protect(b_val); |
protect(a_val); protect(b_val); |
1168 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1169 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1170 |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
1171 |
new_string= malloc(len); |
new_string= malloc(len); |
1172 |
|
assert(new_string != NULL); |
1173 |
strcpy(new_string, b_val->content.ptr); |
strcpy(new_string, b_val->content.ptr); |
1174 |
strcat(new_string, a_val->content.ptr); |
strcat(new_string, a_val->content.ptr); |
1175 |
push_cstring(env, new_string); |
push_cstring(env, new_string); |
1179 |
return; |
return; |
1180 |
} |
} |
1181 |
|
|
1182 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1183 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1184 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1185 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1186 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1187 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1188 |
push_int(env, b+a); |
push_int(env, b+a); |
1189 |
|
|
1190 |
return; |
return; |
1191 |
} |
} |
1192 |
|
|
1193 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1194 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1195 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1196 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1197 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1198 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1199 |
push_float(env, fb+fa); |
push_float(env, fb+fa); |
1200 |
|
|
1201 |
return; |
return; |
1202 |
} |
} |
1203 |
|
|
1204 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1205 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1206 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1207 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1208 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1209 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1210 |
push_float(env, b+fa); |
push_float(env, b+fa); |
1211 |
|
|
1212 |
return; |
return; |
1213 |
} |
} |
1214 |
|
|
1215 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1216 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1217 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1218 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1219 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1220 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1221 |
push_float(env, fb+a); |
push_float(env, fb+a); |
1222 |
|
|
1233 |
int a, b; |
int a, b; |
1234 |
float fa, fb; |
float fa, fb; |
1235 |
|
|
1236 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1237 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1238 |
env->err=1; |
env->err=1; |
1239 |
return; |
return; |
1240 |
} |
} |
1241 |
|
|
1242 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1243 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1244 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1245 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1246 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1247 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1248 |
push_int(env, b-a); |
push_int(env, b-a); |
1249 |
|
|
1250 |
return; |
return; |
1251 |
} |
} |
1252 |
|
|
1253 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1254 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1255 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1256 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1257 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1258 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1259 |
push_float(env, fb-fa); |
push_float(env, fb-fa); |
1260 |
|
|
1261 |
return; |
return; |
1262 |
} |
} |
1263 |
|
|
1264 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1265 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1266 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1267 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1268 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1269 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1270 |
push_float(env, b-fa); |
push_float(env, b-fa); |
1271 |
|
|
1272 |
return; |
return; |
1273 |
} |
} |
1274 |
|
|
1275 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1276 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1277 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1278 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1279 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1280 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1281 |
push_float(env, fb-a); |
push_float(env, fb-a); |
1282 |
|
|
1293 |
int a, b; |
int a, b; |
1294 |
float fa, fb; |
float fa, fb; |
1295 |
|
|
1296 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1297 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1298 |
env->err=1; |
env->err= 1; |
1299 |
return; |
return; |
1300 |
} |
} |
1301 |
|
|
1302 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1303 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1304 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1305 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1306 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1307 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1308 |
push_int(env, b>a); |
push_int(env, b>a); |
1309 |
|
|
1310 |
return; |
return; |
1311 |
} |
} |
1312 |
|
|
1313 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1314 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1315 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1316 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1317 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1318 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1319 |
push_int(env, fb>fa); |
push_int(env, fb>fa); |
1320 |
|
|
1321 |
return; |
return; |
1322 |
} |
} |
1323 |
|
|
1324 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
1325 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1326 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
1327 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1328 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
1329 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1330 |
push_int(env, b>fa); |
push_int(env, b>fa); |
1331 |
|
|
1332 |
return; |
return; |
1333 |
} |
} |
1334 |
|
|
1335 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
1336 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
1337 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
1338 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1339 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
1340 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1341 |
push_int(env, fb>a); |
push_int(env, fb>a); |
1342 |
|
|
1344 |
} |
} |
1345 |
|
|
1346 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1347 |
env->err=2; |
env->err= 2; |
1348 |
} |
} |
1349 |
|
|
1350 |
/* "<" */ |
/* "<" */ |
1371 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1372 |
value *copy_val(environment *env, value *old_value) |
value *copy_val(environment *env, value *old_value) |
1373 |
{ |
{ |
|
stackitem *old_item, *new_item, *prev_item; |
|
1374 |
value *new_value; |
value *new_value; |
1375 |
|
|
1376 |
|
if(old_value==NULL) |
1377 |
|
return NULL; |
1378 |
|
|
1379 |
protect(old_value); |
protect(old_value); |
1380 |
new_value= new_val(env); |
new_value= new_val(env); |
|
protect(new_value); |
|
1381 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1382 |
|
|
1383 |
switch(old_value->type){ |
switch(old_value->type){ |
1385 |
case integer: |
case integer: |
1386 |
case func: |
case func: |
1387 |
case symb: |
case symb: |
1388 |
|
case empty: |
1389 |
new_value->content= old_value->content; |
new_value->content= old_value->content; |
1390 |
break; |
break; |
1391 |
case string: |
case string: |
1392 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1393 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1394 |
break; |
break; |
1395 |
case list: |
case tcons: |
|
new_value->content.ptr= NULL; |
|
1396 |
|
|
1397 |
prev_item= NULL; |
new_value->content.c= malloc(sizeof(pair)); |
1398 |
old_item= (stackitem*)(old_value->content.ptr); |
assert(new_value->content.c!=NULL); |
1399 |
|
env->gc_count += sizeof(pair); |
1400 |
|
|
1401 |
while(old_item != NULL) { /* While list is not empty */ |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
1402 |
new_item= malloc(sizeof(stackitem)); |
CDR(new_value)= copy_val(env, CDR(old_value)); /* recurse */ |
|
new_item->item= copy_val(env, old_item->item); /* recurse */ |
|
|
new_item->next= NULL; |
|
|
if(prev_item != NULL) /* If this wasn't the first item */ |
|
|
prev_item->next= new_item; /* point the previous item to the |
|
|
new item */ |
|
|
else |
|
|
new_value->content.ptr= new_item; |
|
|
old_item= old_item->next; |
|
|
prev_item= new_item; |
|
|
} |
|
1403 |
break; |
break; |
1404 |
} |
} |
1405 |
|
|
1406 |
unprotect(old_value); unprotect(new_value); |
unprotect(old_value); |
1407 |
|
|
1408 |
return new_value; |
return new_value; |
1409 |
} |
} |
1411 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1412 |
extern void sx_647570(environment *env) |
extern void sx_647570(environment *env) |
1413 |
{ |
{ |
1414 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
1415 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1416 |
env->err= 1; |
env->err= 1; |
1417 |
return; |
return; |
1418 |
} |
} |
1419 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, CAR(env->head))); |
1420 |
} |
} |
1421 |
|
|
1422 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1424 |
{ |
{ |
1425 |
int truth; |
int truth; |
1426 |
|
|
1427 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1428 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1429 |
env->err= 1; |
env->err= 1; |
1430 |
return; |
return; |
1431 |
} |
} |
1432 |
|
|
1433 |
if(env->head->next->item->type != integer) { |
if(CAR(CDR(env->head))->type != integer) { |
1434 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1435 |
env->err=2; |
env->err= 2; |
1436 |
return; |
return; |
1437 |
} |
} |
1438 |
|
|
1439 |
swap(env); |
swap(env); |
1440 |
if(env->err) return; |
if(env->err) return; |
1441 |
|
|
1442 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1443 |
|
|
1444 |
toss(env); |
toss(env); |
1445 |
if(env->err) return; |
if(env->err) return; |
1455 |
{ |
{ |
1456 |
int truth; |
int truth; |
1457 |
|
|
1458 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1459 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1460 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1461 |
env->err=1; |
env->err= 1; |
1462 |
return; |
return; |
1463 |
} |
} |
1464 |
|
|
1465 |
if(env->head->next->next->item->type != integer) { |
if(CAR(CDR(CDR(env->head)))->type!=integer) { |
1466 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1467 |
env->err=2; |
env->err= 2; |
1468 |
return; |
return; |
1469 |
} |
} |
1470 |
|
|
1471 |
rot(env); |
rot(env); |
1472 |
if(env->err) return; |
if(env->err) return; |
1473 |
|
|
1474 |
truth=env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1475 |
|
|
1476 |
toss(env); |
toss(env); |
1477 |
if(env->err) return; |
if(env->err) return; |
1486 |
eval(env); |
eval(env); |
1487 |
} |
} |
1488 |
|
|
1489 |
|
extern void sx_656c7365(environment *env) |
1490 |
|
{ |
1491 |
|
if(env->head->type==empty || CDR(env->head)->type==empty |
1492 |
|
|| CDR(CDR(env->head))->type==empty || CDR(CDR(CDR(env->head)))->type==empty |
1493 |
|
|| CDR(CDR(CDR(CDR(env->head))))->type==empty) { |
1494 |
|
printerr("Too Few Arguments"); |
1495 |
|
env->err= 1; |
1496 |
|
return; |
1497 |
|
} |
1498 |
|
|
1499 |
|
if(CAR(CDR(env->head))->type!=symb |
1500 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "then")!=0 |
1501 |
|
|| CAR(CDR(CDR(CDR(env->head))))->type!=symb |
1502 |
|
|| strcmp(CAR(CDR(CDR(CDR(env->head))))->content.sym->id, "if")!=0) { |
1503 |
|
printerr("Bad Argument Type"); |
1504 |
|
env->err= 2; |
1505 |
|
return; |
1506 |
|
} |
1507 |
|
|
1508 |
|
swap(env); toss(env); rot(env); toss(env); |
1509 |
|
ifelse(env); |
1510 |
|
} |
1511 |
|
|
1512 |
|
extern void then(environment *env) |
1513 |
|
{ |
1514 |
|
if(env->head->type==empty || CDR(env->head)->type==empty |
1515 |
|
|| CDR(CDR(env->head))->type==empty) { |
1516 |
|
printerr("Too Few Arguments"); |
1517 |
|
env->err= 1; |
1518 |
|
return; |
1519 |
|
} |
1520 |
|
|
1521 |
|
if(CAR(CDR(env->head))->type!=symb |
1522 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "if")!=0) { |
1523 |
|
printerr("Bad Argument Type"); |
1524 |
|
env->err= 2; |
1525 |
|
return; |
1526 |
|
} |
1527 |
|
|
1528 |
|
swap(env); toss(env); |
1529 |
|
sx_6966(env); |
1530 |
|
} |
1531 |
|
|
1532 |
/* "while" */ |
/* "while" */ |
1533 |
extern void sx_7768696c65(environment *env) |
extern void sx_7768696c65(environment *env) |
1534 |
{ |
{ |
1535 |
int truth; |
int truth; |
1536 |
value *loop, *test; |
value *loop, *test; |
1537 |
|
|
1538 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1539 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1540 |
env->err=1; |
env->err= 1; |
1541 |
return; |
return; |
1542 |
} |
} |
1543 |
|
|
1544 |
loop= env->head->item; |
loop= CAR(env->head); |
1545 |
protect(loop); |
protect(loop); |
1546 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1547 |
|
|
1548 |
test= env->head->item; |
test= CAR(env->head); |
1549 |
protect(test); |
protect(test); |
1550 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1551 |
|
|
1553 |
push_val(env, test); |
push_val(env, test); |
1554 |
eval(env); |
eval(env); |
1555 |
|
|
1556 |
if(env->head->item->type != integer) { |
if(CAR(env->head)->type != integer) { |
1557 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1558 |
env->err= 2; |
env->err= 2; |
1559 |
return; |
return; |
1560 |
} |
} |
1561 |
|
|
1562 |
truth= env->head->item->content.i; |
truth= CAR(env->head)->content.i; |
1563 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1564 |
|
|
1565 |
if(truth) { |
if(truth) { |
1581 |
value *loop; |
value *loop; |
1582 |
int foo1, foo2; |
int foo1, foo2; |
1583 |
|
|
1584 |
if(env->head==NULL || env->head->next==NULL |
if(env->head->type==empty || CDR(env->head)->type==empty |
1585 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))->type==empty) { |
1586 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1587 |
env->err= 1; |
env->err= 1; |
1588 |
return; |
return; |
1589 |
} |
} |
1590 |
|
|
1591 |
if(env->head->next->item->type!=integer |
if(CAR(CDR(env->head))->type!=integer |
1592 |
|| env->head->next->next->item->type!=integer) { |
|| CAR(CDR(CDR(env->head)))->type!=integer) { |
1593 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1594 |
env->err= 2; |
env->err= 2; |
1595 |
return; |
return; |
1596 |
} |
} |
1597 |
|
|
1598 |
loop= env->head->item; |
loop= CAR(env->head); |
1599 |
protect(loop); |
protect(loop); |
1600 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1601 |
|
|
1602 |
foo2= env->head->item->content.i; |
foo2= CAR(env->head)->content.i; |
1603 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1604 |
|
|
1605 |
foo1= env->head->item->content.i; |
foo1= CAR(env->head)->content.i; |
1606 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1607 |
|
|
1608 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1627 |
extern void foreach(environment *env) |
extern void foreach(environment *env) |
1628 |
{ |
{ |
1629 |
value *loop, *foo; |
value *loop, *foo; |
1630 |
stackitem *iterator; |
value *iterator; |
1631 |
|
|
1632 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1633 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1634 |
env->err= 1; |
env->err= 1; |
1635 |
return; |
return; |
1636 |
} |
} |
1637 |
|
|
1638 |
if(env->head->next->item->type != list) { |
if(CAR(CDR(env->head))->type!=tcons) { |
1639 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1640 |
env->err= 2; |
env->err= 2; |
1641 |
return; |
return; |
1642 |
} |
} |
1643 |
|
|
1644 |
loop= env->head->item; |
loop= CAR(env->head); |
1645 |
protect(loop); |
protect(loop); |
1646 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1647 |
|
|
1648 |
foo= env->head->item; |
foo= CAR(env->head); |
1649 |
protect(foo); |
protect(foo); |
1650 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1651 |
|
|
1652 |
iterator= foo->content.ptr; |
iterator= foo; |
1653 |
|
|
1654 |
while(iterator!=NULL) { |
while(iterator->type!=empty) { |
1655 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
1656 |
push_val(env, loop); |
push_val(env, loop); |
1657 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1658 |
iterator= iterator->next; |
if (iterator->type == tcons){ |
1659 |
|
iterator= CDR(iterator); |
1660 |
|
} else { |
1661 |
|
printerr("Bad Argument Type"); /* Improper list */ |
1662 |
|
env->err= 2; |
1663 |
|
break; |
1664 |
|
} |
1665 |
} |
} |
1666 |
unprotect(loop); unprotect(foo); |
unprotect(loop); unprotect(foo); |
1667 |
} |
} |
1670 |
extern void to(environment *env) |
extern void to(environment *env) |
1671 |
{ |
{ |
1672 |
int ending, start, i; |
int ending, start, i; |
1673 |
stackitem *iterator, *temp; |
value *iterator, *temp, *end; |
1674 |
value *pack; |
|
1675 |
|
end= new_val(env); |
1676 |
|
|
1677 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1678 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1679 |
env->err=1; |
env->err= 1; |
1680 |
return; |
return; |
1681 |
} |
} |
1682 |
|
|
1683 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1684 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1685 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1686 |
env->err=2; |
env->err= 2; |
1687 |
return; |
return; |
1688 |
} |
} |
1689 |
|
|
1690 |
ending= env->head->item->content.i; |
ending= CAR(env->head)->content.i; |
1691 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1692 |
start= env->head->item->content.i; |
start= CAR(env->head)->content.i; |
1693 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1694 |
|
|
1695 |
push_sym(env, "["); |
push_sym(env, "["); |
1703 |
} |
} |
1704 |
|
|
1705 |
iterator= env->head; |
iterator= env->head; |
|
pack= new_val(env); |
|
|
protect(pack); |
|
1706 |
|
|
1707 |
if(iterator==NULL |
if(iterator->type==empty |
1708 |
|| (iterator->item->type==symb |
|| (CAR(iterator)->type==symb |
1709 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
1710 |
temp= NULL; |
temp= end; |
1711 |
toss(env); |
toss(env); |
1712 |
} else { |
} else { |
1713 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
1714 |
while(iterator->next!=NULL |
while(CDR(iterator)->type!=empty |
1715 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
1716 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
1717 |
iterator= iterator->next; |
iterator= CDR(iterator); |
1718 |
|
|
1719 |
/* Extract list */ |
/* Extract list */ |
1720 |
temp= env->head; |
temp= env->head; |
1721 |
env->head= iterator->next; |
env->head= CDR(iterator); |
1722 |
iterator->next= NULL; |
CDR(iterator)= end; |
1723 |
|
|
1724 |
pack->type= list; |
if(env->head->type!=empty) |
|
pack->content.ptr= temp; |
|
|
|
|
|
if(env->head!=NULL) |
|
1725 |
toss(env); |
toss(env); |
1726 |
} |
} |
1727 |
|
|
1728 |
/* Push list */ |
/* Push list */ |
1729 |
|
push_val(env, temp); |
|
push_val(env, pack); |
|
|
|
|
|
unprotect(pack); |
|
1730 |
} |
} |
1731 |
|
|
1732 |
/* Read a string */ |
/* Read a string */ |
1756 |
int count= -1; |
int count= -1; |
1757 |
float ftemp; |
float ftemp; |
1758 |
static int depth= 0; |
static int depth= 0; |
1759 |
char *match, *ctemp; |
char *match; |
1760 |
size_t inlength; |
size_t inlength; |
1761 |
|
|
1762 |
if(env->in_string==NULL) { |
if(env->in_string==NULL) { |
1765 |
} |
} |
1766 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1767 |
|
|
1768 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(CAR(env->head)->content.ptr))[0]=='\0'){ |
1769 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1770 |
return; |
return; |
1771 |
} |
} |
1772 |
|
|
1773 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(CAR(env->head)->content.ptr)+1); |
1774 |
|
assert(env->in_string != NULL); |
1775 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1776 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, CAR(env->head)->content.ptr); |
1777 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1778 |
} |
} |
1779 |
|
|
1780 |
inlength= strlen(env->in_string)+1; |
inlength= strlen(env->in_string)+1; |
1781 |
match= malloc(inlength); |
match= malloc(inlength); |
1782 |
|
assert(match != NULL); |
1783 |
|
|
1784 |
if(sscanf(env->in_string, blankform, &readlength) != EOF |
if(sscanf(env->in_string, blankform, &readlength) != EOF |
1785 |
&& readlength != -1) { |
&& readlength != -1) { |
1792 |
} else { |
} else { |
1793 |
push_float(env, ftemp); |
push_float(env, ftemp); |
1794 |
} |
} |
1795 |
|
} else if(sscanf(env->in_string, "\"\"%n", &readlength) != EOF |
1796 |
|
&& readlength != -1) { |
1797 |
|
push_cstring(env, ""); |
1798 |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
1799 |
&& readlength != -1) { |
&& readlength != -1) { |
1800 |
push_cstring(env, match); |
push_cstring(env, match); |
1826 |
return sx_72656164(env); |
return sx_72656164(env); |
1827 |
} |
} |
1828 |
|
|
1829 |
|
#ifdef __linux__ |
1830 |
extern void beep(environment *env) |
extern void beep(environment *env) |
1831 |
{ |
{ |
1832 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1833 |
|
|
1834 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1835 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1836 |
env->err=1; |
env->err= 1; |
1837 |
return; |
return; |
1838 |
} |
} |
1839 |
|
|
1840 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1841 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1842 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1843 |
env->err=2; |
env->err= 2; |
1844 |
return; |
return; |
1845 |
} |
} |
1846 |
|
|
1847 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1848 |
toss(env); |
toss(env); |
1849 |
freq=env->head->item->content.i; |
freq= CAR(env->head)->content.i; |
1850 |
toss(env); |
toss(env); |
1851 |
|
|
1852 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1853 |
length */ |
length */ |
1854 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1855 |
timer ticks */ |
timer ticks */ |
1856 |
|
|
1857 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1858 |
|
|
1859 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1860 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1861 |
case 0: |
case 0: |
1862 |
usleep(dur); |
usleep(dur); |
1863 |
return; |
return; |
1864 |
case -1: |
case -1: |
1865 |
perror("beep"); |
perror("beep"); |
1866 |
env->err=5; |
env->err= 5; |
1867 |
return; |
return; |
1868 |
default: |
default: |
1869 |
abort(); |
abort(); |
1870 |
} |
} |
1871 |
} |
} |
1872 |
|
#endif /* __linux__ */ |
1873 |
|
|
1874 |
/* "wait" */ |
/* "wait" */ |
1875 |
extern void sx_77616974(environment *env) |
extern void sx_77616974(environment *env) |
1876 |
{ |
{ |
1877 |
int dur; |
int dur; |
1878 |
|
|
1879 |
if((env->head)==NULL) { |
if(env->head->type==empty) { |
1880 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1881 |
env->err=1; |
env->err= 1; |
1882 |
return; |
return; |
1883 |
} |
} |
1884 |
|
|
1885 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
1886 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1887 |
env->err=2; |
env->err= 2; |
1888 |
return; |
return; |
1889 |
} |
} |
1890 |
|
|
1891 |
dur=env->head->item->content.i; |
dur= CAR(env->head)->content.i; |
1892 |
toss(env); |
toss(env); |
1893 |
|
|
1894 |
usleep(dur); |
usleep(dur); |
1896 |
|
|
1897 |
extern void copying(environment *env) |
extern void copying(environment *env) |
1898 |
{ |
{ |
1899 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf(" GNU GENERAL PUBLIC LICENSE\n\ |
1900 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
1901 |
\n\ |
\n\ |
1902 |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n\ |
2185 |
int a, b; |
int a, b; |
2186 |
float fa, fb; |
float fa, fb; |
2187 |
|
|
2188 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2189 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2190 |
env->err=1; |
env->err= 1; |
2191 |
return; |
return; |
2192 |
} |
} |
2193 |
|
|
2194 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2195 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2196 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2197 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2198 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2199 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2200 |
push_int(env, b*a); |
push_int(env, b*a); |
2201 |
|
|
2202 |
return; |
return; |
2203 |
} |
} |
2204 |
|
|
2205 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2206 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2207 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2208 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2209 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2210 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2211 |
push_float(env, fb*fa); |
push_float(env, fb*fa); |
2212 |
|
|
2213 |
return; |
return; |
2214 |
} |
} |
2215 |
|
|
2216 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2217 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2218 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2219 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2220 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2221 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2222 |
push_float(env, b*fa); |
push_float(env, b*fa); |
2223 |
|
|
2224 |
return; |
return; |
2225 |
} |
} |
2226 |
|
|
2227 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2228 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2229 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2230 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2231 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2232 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2233 |
push_float(env, fb*a); |
push_float(env, fb*a); |
2234 |
|
|
2236 |
} |
} |
2237 |
|
|
2238 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2239 |
env->err=2; |
env->err= 2; |
2240 |
} |
} |
2241 |
|
|
2242 |
/* "/" */ |
/* "/" */ |
2245 |
int a, b; |
int a, b; |
2246 |
float fa, fb; |
float fa, fb; |
2247 |
|
|
2248 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2249 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2250 |
env->err=1; |
env->err= 1; |
2251 |
return; |
return; |
2252 |
} |
} |
2253 |
|
|
2254 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2255 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2256 |
a=env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2257 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2258 |
b=env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2259 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2260 |
push_float(env, b/a); |
push_float(env, b/a); |
2261 |
|
|
2262 |
return; |
return; |
2263 |
} |
} |
2264 |
|
|
2265 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2266 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2267 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2268 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2269 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2270 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2271 |
push_float(env, fb/fa); |
push_float(env, fb/fa); |
2272 |
|
|
2273 |
return; |
return; |
2274 |
} |
} |
2275 |
|
|
2276 |
if(env->head->item->type==tfloat |
if(CAR(env->head)->type==tfloat |
2277 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2278 |
fa= env->head->item->content.f; |
fa= CAR(env->head)->content.f; |
2279 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2280 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2281 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2282 |
push_float(env, b/fa); |
push_float(env, b/fa); |
2283 |
|
|
2284 |
return; |
return; |
2285 |
} |
} |
2286 |
|
|
2287 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2288 |
&& env->head->next->item->type==tfloat) { |
&& CAR(CDR(env->head))->type==tfloat) { |
2289 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2290 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2291 |
fb= env->head->item->content.f; |
fb= CAR(env->head)->content.f; |
2292 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2293 |
push_float(env, fb/a); |
push_float(env, fb/a); |
2294 |
|
|
2296 |
} |
} |
2297 |
|
|
2298 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2299 |
env->err=2; |
env->err= 2; |
2300 |
} |
} |
2301 |
|
|
2302 |
/* "mod" */ |
/* "mod" */ |
2304 |
{ |
{ |
2305 |
int a, b; |
int a, b; |
2306 |
|
|
2307 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2308 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2309 |
env->err= 1; |
env->err= 1; |
2310 |
return; |
return; |
2311 |
} |
} |
2312 |
|
|
2313 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2314 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2315 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2316 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2317 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2318 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2319 |
push_int(env, b%a); |
push_int(env, b%a); |
2320 |
|
|
2322 |
} |
} |
2323 |
|
|
2324 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2325 |
env->err=2; |
env->err= 2; |
2326 |
} |
} |
2327 |
|
|
2328 |
/* "div" */ |
/* "div" */ |
2330 |
{ |
{ |
2331 |
int a, b; |
int a, b; |
2332 |
|
|
2333 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2334 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2335 |
env->err= 1; |
env->err= 1; |
2336 |
return; |
return; |
2337 |
} |
} |
2338 |
|
|
2339 |
if(env->head->item->type==integer |
if(CAR(env->head)->type==integer |
2340 |
&& env->head->next->item->type==integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2341 |
a= env->head->item->content.i; |
a= CAR(env->head)->content.i; |
2342 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2343 |
b= env->head->item->content.i; |
b= CAR(env->head)->content.i; |
2344 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2345 |
push_int(env, (int)b/a); |
push_int(env, (int)b/a); |
2346 |
|
|
2350 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2351 |
env->err= 2; |
env->err= 2; |
2352 |
} |
} |
2353 |
|
|
2354 |
|
extern void setcar(environment *env) |
2355 |
|
{ |
2356 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2357 |
|
printerr("Too Few Arguments"); |
2358 |
|
env->err= 1; |
2359 |
|
return; |
2360 |
|
} |
2361 |
|
|
2362 |
|
if(CDR(env->head)->type!=tcons) { |
2363 |
|
printerr("Bad Argument Type"); |
2364 |
|
env->err= 2; |
2365 |
|
return; |
2366 |
|
} |
2367 |
|
|
2368 |
|
CAR(CAR(CDR(env->head)))=CAR(env->head); |
2369 |
|
toss(env); |
2370 |
|
} |
2371 |
|
|
2372 |
|
extern void setcdr(environment *env) |
2373 |
|
{ |
2374 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2375 |
|
printerr("Too Few Arguments"); |
2376 |
|
env->err= 1; |
2377 |
|
return; |
2378 |
|
} |
2379 |
|
|
2380 |
|
if(CDR(env->head)->type!=tcons) { |
2381 |
|
printerr("Bad Argument Type"); |
2382 |
|
env->err= 2; |
2383 |
|
return; |
2384 |
|
} |
2385 |
|
|
2386 |
|
CDR(CAR(CDR(env->head)))=CAR(env->head); |
2387 |
|
toss(env); |
2388 |
|
} |
2389 |
|
|
2390 |
|
extern void car(environment *env) |
2391 |
|
{ |
2392 |
|
if(env->head->type==empty) { |
2393 |
|
printerr("Too Few Arguments"); |
2394 |
|
env->err= 1; |
2395 |
|
return; |
2396 |
|
} |
2397 |
|
|
2398 |
|
if(CAR(env->head)->type!=tcons) { |
2399 |
|
printerr("Bad Argument Type"); |
2400 |
|
env->err= 2; |
2401 |
|
return; |
2402 |
|
} |
2403 |
|
|
2404 |
|
CAR(env->head)=CAR(CAR(env->head)); |
2405 |
|
} |
2406 |
|
|
2407 |
|
extern void cdr(environment *env) |
2408 |
|
{ |
2409 |
|
if(env->head->type==empty) { |
2410 |
|
printerr("Too Few Arguments"); |
2411 |
|
env->err= 1; |
2412 |
|
return; |
2413 |
|
} |
2414 |
|
|
2415 |
|
if(CAR(env->head)->type!=tcons) { |
2416 |
|
printerr("Bad Argument Type"); |
2417 |
|
env->err= 2; |
2418 |
|
return; |
2419 |
|
} |
2420 |
|
|
2421 |
|
CAR(env->head)=CDR(CAR(env->head)); |
2422 |
|
} |
2423 |
|
|
2424 |
|
extern void cons(environment *env) |
2425 |
|
{ |
2426 |
|
value *val; |
2427 |
|
|
2428 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2429 |
|
printerr("Too Few Arguments"); |
2430 |
|
env->err= 1; |
2431 |
|
return; |
2432 |
|
} |
2433 |
|
|
2434 |
|
val=new_val(env); |
2435 |
|
val->content.c= malloc(sizeof(pair)); |
2436 |
|
assert(val->content.c!=NULL); |
2437 |
|
|
2438 |
|
env->gc_count += sizeof(pair); |
2439 |
|
val->type=tcons; |
2440 |
|
|
2441 |
|
CAR(val)= CAR(CDR(env->head)); |
2442 |
|
CDR(val)= CAR(env->head); |
2443 |
|
|
2444 |
|
push_val(env, val); |
2445 |
|
|
2446 |
|
swap(env); if(env->err) return; |
2447 |
|
toss(env); if(env->err) return; |
2448 |
|
swap(env); if(env->err) return; |
2449 |
|
toss(env); if(env->err) return; |
2450 |
|
} |
2451 |
|
|
2452 |
|
/* 2: 3 => */ |
2453 |
|
/* 1: [ [ 1 . 2 ] [ 3 . 4 ] ] => 1: [ 3 . 4 ] */ |
2454 |
|
extern void assq(environment *env) |
2455 |
|
{ |
2456 |
|
assocgen(env, eq); |
2457 |
|
} |
2458 |
|
|
2459 |
|
|
2460 |
|
/* General assoc function */ |
2461 |
|
void assocgen(environment *env, funcp eqfunc) |
2462 |
|
{ |
2463 |
|
value *key, *item; |
2464 |
|
|
2465 |
|
/* Needs two values on the stack, the top one must be an association |
2466 |
|
list */ |
2467 |
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
2468 |
|
printerr("Too Few Arguments"); |
2469 |
|
env->err= 1; |
2470 |
|
return; |
2471 |
|
} |
2472 |
|
|
2473 |
|
if(CAR(env->head)->type!=tcons) { |
2474 |
|
printerr("Bad Argument Type"); |
2475 |
|
env->err= 2; |
2476 |
|
return; |
2477 |
|
} |
2478 |
|
|
2479 |
|
key=CAR(CDR(env->head)); |
2480 |
|
item=CAR(env->head); |
2481 |
|
|
2482 |
|
while(item->type == tcons){ |
2483 |
|
if(CAR(item)->type != tcons){ |
2484 |
|
printerr("Bad Argument Type"); |
2485 |
|
env->err= 2; |
2486 |
|
return; |
2487 |
|
} |
2488 |
|
push_val(env, key); |
2489 |
|
push_val(env, CAR(CAR(item))); |
2490 |
|
eqfunc(env); if(env->err) return; |
2491 |
|
|
2492 |
|
/* Check the result of 'eqfunc' */ |
2493 |
|
if(env->head->type==empty) { |
2494 |
|
printerr("Too Few Arguments"); |
2495 |
|
env->err= 1; |
2496 |
|
return; |
2497 |
|
} |
2498 |
|
if(CAR(env->head)->type!=integer) { |
2499 |
|
printerr("Bad Argument Type"); |
2500 |
|
env->err= 2; |
2501 |
|
return; |
2502 |
|
} |
2503 |
|
|
2504 |
|
if(CAR(env->head)->content.i){ |
2505 |
|
toss(env); if(env->err) return; |
2506 |
|
break; |
2507 |
|
} |
2508 |
|
toss(env); if(env->err) return; |
2509 |
|
|
2510 |
|
if(item->type!=tcons) { |
2511 |
|
printerr("Bad Argument Type"); |
2512 |
|
env->err= 2; |
2513 |
|
return; |
2514 |
|
} |
2515 |
|
|
2516 |
|
item=CDR(item); |
2517 |
|
} |
2518 |
|
|
2519 |
|
if(item->type == tcons){ /* A match was found */ |
2520 |
|
push_val(env, CAR(item)); |
2521 |
|
} else { |
2522 |
|
push_int(env, 0); |
2523 |
|
} |
2524 |
|
swap(env); if(env->err) return; |
2525 |
|
toss(env); if(env->err) return; |
2526 |
|
swap(env); if(env->err) return; |
2527 |
|
toss(env); |
2528 |
|
} |