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 */ |
37 |
#include <unistd.h> |
#include <unistd.h> |
38 |
/* EX_NOINPUT, EX_USAGE */ |
/* EX_NOINPUT, EX_USAGE */ |
39 |
#include <sysexits.h> |
#include <sysexits.h> |
40 |
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|
41 |
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#ifdef __linux__ |
42 |
/* mtrace, muntrace */ |
/* mtrace, muntrace */ |
43 |
#include <mcheck.h> |
#include <mcheck.h> |
44 |
/* ioctl */ |
/* ioctl */ |
45 |
#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
46 |
/* KDMKTONE */ |
/* KDMKTONE */ |
47 |
#include <linux/kd.h> |
#include <linux/kd.h> |
48 |
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#endif /* __linux__ */ |
49 |
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|
50 |
#include "stack.h" |
#include "stack.h" |
51 |
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|
54 |
{ |
{ |
55 |
int i; |
int i; |
56 |
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|
57 |
env->gc_limit= 20; |
env->gc_limit= 400000; |
58 |
env->gc_count= 0; |
env->gc_count= 0; |
59 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
|
env->gc_protect= NULL; |
|
60 |
|
|
61 |
env->head= NULL; |
env->head= NULL; |
62 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
68 |
env->interactive= 1; |
env->interactive= 1; |
69 |
} |
} |
70 |
|
|
71 |
void printerr(const char* in_string) { |
void printerr(const char* in_string) |
72 |
|
{ |
73 |
fprintf(stderr, "Err: %s\n", in_string); |
fprintf(stderr, "Err: %s\n", in_string); |
74 |
} |
} |
75 |
|
|
76 |
/* Discard the top element of the stack. */ |
/* Discard the top element of the stack. */ |
77 |
extern void toss(environment *env) |
extern void toss(environment *env) |
78 |
{ |
{ |
79 |
stackitem *temp= env->head; |
if(env->head==NULL) { |
|
|
|
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if((env->head)==NULL) { |
|
80 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
81 |
env->err= 1; |
env->err= 1; |
82 |
return; |
return; |
83 |
} |
} |
84 |
|
|
85 |
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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gc_init(env); |
|
86 |
} |
} |
87 |
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|
88 |
/* 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. */ |
114 |
} |
} |
115 |
} |
} |
116 |
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|
117 |
value* new_val(environment *env) { |
/* Create new value */ |
118 |
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value* new_val(environment *env) |
119 |
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{ |
120 |
value *nval= malloc(sizeof(value)); |
value *nval= malloc(sizeof(value)); |
121 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
122 |
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123 |
nval->content.ptr= NULL; |
nval->content.ptr= NULL; |
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protect(env, nval); |
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gc_init(env); |
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124 |
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125 |
nitem->item= nval; |
nitem->item= nval; |
126 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
127 |
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|
128 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
129 |
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130 |
env->gc_count++; |
env->gc_count += sizeof(value); |
131 |
unprotect(env); |
nval->gc.flag.mark= 0; |
132 |
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nval->gc.flag.protect= 0; |
133 |
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|
134 |
return nval; |
return nval; |
135 |
} |
} |
136 |
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137 |
void gc_mark(value *val) { |
/* Mark values recursively. |
138 |
stackitem *iterator; |
Marked values are not collected by the GC. */ |
139 |
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inline void gc_mark(value *val) |
140 |
if(val==NULL || val->gc_garb==0) |
{ |
141 |
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if(val==NULL || val->gc.flag.mark) |
142 |
return; |
return; |
143 |
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|
144 |
val->gc_garb= 0; |
val->gc.flag.mark= 1; |
|
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if(val->type==list) { |
|
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iterator= val->content.ptr; |
|
145 |
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146 |
while(iterator!=NULL) { |
if(val->type==tcons) { |
147 |
gc_mark(iterator->item); |
gc_mark(CAR(val)); |
148 |
iterator= iterator->next; |
gc_mark(CDR(val)); |
|
} |
|
149 |
} |
} |
150 |
} |
} |
151 |
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152 |
extern void gc_init(environment *env) { |
inline void gc_maybe(environment *env) |
153 |
stackitem *new_head= NULL, *titem, *iterator= env->gc_ref; |
{ |
154 |
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if(env->gc_count < env->gc_limit) |
155 |
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return; |
156 |
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else |
157 |
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return gc_init(env); |
158 |
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} |
159 |
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160 |
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/* Start GC */ |
161 |
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extern void gc_init(environment *env) |
162 |
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{ |
163 |
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stackitem *new_head= NULL, *titem; |
164 |
|
cons *iterator; |
165 |
symbol *tsymb; |
symbol *tsymb; |
166 |
int i; |
int i; |
167 |
|
|
168 |
if(env->gc_count < env->gc_limit) |
if(env->interactive) |
169 |
return; |
printf("Garbage collecting."); |
170 |
|
|
171 |
while(iterator!=NULL) { |
/* Mark values on stack */ |
172 |
iterator->item->gc_garb= 1; |
gc_mark(env->head); |
|
iterator= iterator->next; |
|
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} |
|
173 |
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|
174 |
/* Mark */ |
if(env->interactive) |
175 |
iterator= env->gc_protect; |
printf("."); |
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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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} |
|
176 |
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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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} |
|
177 |
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178 |
for(i= 0; i<HASHTBLSIZE; i++) { |
/* Mark values in hashtable */ |
179 |
tsymb= env->symbols[i]; |
for(i= 0; i<HASHTBLSIZE; i++) |
180 |
while(tsymb!=NULL) { |
for(tsymb= env->symbols[i]; tsymb!=NULL; tsymb= tsymb->next) |
181 |
gc_mark(tsymb->val); |
if (tsymb->val != NULL) |
182 |
tsymb= tsymb->next; |
gc_mark(tsymb->val); |
183 |
} |
|
184 |
} |
|
185 |
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if(env->interactive) |
186 |
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printf("."); |
187 |
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188 |
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|
189 |
env->gc_count= 0; |
env->gc_count= 0; |
190 |
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|
191 |
/* Sweep */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
192 |
while(env->gc_ref!=NULL) { |
|
193 |
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if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
194 |
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|
195 |
if(env->gc_ref->item->gc_garb) { |
if(env->gc_ref->item->type==string) /* Remove content */ |
|
switch(env->gc_ref->item->type) { |
|
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case string: |
|
196 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
197 |
break; |
|
198 |
case integer: |
free(env->gc_ref->item); /* Remove from gc_ref */ |
|
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: |
|
|
break; |
|
|
} |
|
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free(env->gc_ref->item); |
|
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titem= env->gc_ref->next; |
|
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free(env->gc_ref); |
|
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env->gc_ref= titem; |
|
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} else { |
|
199 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
200 |
env->gc_ref->next= new_head; |
free(env->gc_ref); /* Remove value */ |
|
new_head= env->gc_ref; |
|
201 |
env->gc_ref= titem; |
env->gc_ref= titem; |
202 |
env->gc_count++; |
continue; |
203 |
} |
} |
204 |
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|
205 |
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/* Keep values */ |
206 |
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env->gc_count += sizeof(value); |
207 |
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if(env->gc_ref->item->type==string) |
208 |
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env->gc_count += strlen(env->gc_ref->item->content.ptr); |
209 |
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210 |
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titem= env->gc_ref->next; |
211 |
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env->gc_ref->next= new_head; |
212 |
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new_head= env->gc_ref; |
213 |
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new_head->item->gc.flag.mark= 0; |
214 |
|
env->gc_ref= titem; |
215 |
} |
} |
216 |
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|
217 |
env->gc_limit= env->gc_count*2; |
if (env->gc_limit < env->gc_count*2) |
218 |
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env->gc_limit= env->gc_count*2; |
219 |
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|
220 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
221 |
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|
222 |
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if(env->interactive) |
223 |
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printf("done\n"); |
224 |
|
|
225 |
} |
} |
226 |
|
|
227 |
void protect(environment *env, value *val) |
/* Protect values from GC */ |
228 |
|
void protect(value *val) |
229 |
{ |
{ |
230 |
stackitem *new_item= malloc(sizeof(stackitem)); |
if(val==NULL || val->gc.flag.protect) |
231 |
new_item->item= val; |
return; |
232 |
new_item->next= env->gc_protect; |
|
233 |
env->gc_protect= new_item; |
val->gc.flag.protect= 1; |
234 |
|
|
235 |
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if(val->type==tcons) { |
236 |
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protect(CAR(val)); |
237 |
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protect(CDR(val)); |
238 |
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} |
239 |
} |
} |
240 |
|
|
241 |
void unprotect(environment *env) |
/* Unprotect values from GC */ |
242 |
|
void unprotect(value *val) |
243 |
{ |
{ |
244 |
stackitem *temp= env->gc_protect; |
if(val==NULL || !(val->gc.flag.protect)) |
245 |
env->gc_protect= env->gc_protect->next; |
return; |
246 |
free(temp); |
|
247 |
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val->gc.flag.protect= 0; |
248 |
|
|
249 |
|
if(val->type==tcons) { |
250 |
|
unprotect(CAR(val)); |
251 |
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unprotect(CDR(val)); |
252 |
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} |
253 |
} |
} |
254 |
|
|
255 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
256 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
257 |
{ |
{ |
258 |
stackitem *new_item= malloc(sizeof(stackitem)); |
value *new_value= new_val(env); |
259 |
new_item->item= val; |
|
260 |
new_item->next= env->head; |
new_value->content.c= malloc(sizeof(cons)); |
261 |
env->head= new_item; |
new_value->type= tcons; |
262 |
|
CAR(new_value)= val; |
263 |
|
CDR(new_value)= env->head; |
264 |
|
env->head= new_value; |
265 |
} |
} |
266 |
|
|
267 |
/* Push an integer onto the stack. */ |
/* Push an integer onto the stack */ |
268 |
void push_int(environment *env, int in_val) |
void push_int(environment *env, int in_val) |
269 |
{ |
{ |
270 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
271 |
|
|
272 |
new_value->content.val= in_val; |
new_value->content.i= in_val; |
273 |
new_value->type= integer; |
new_value->type= integer; |
274 |
|
|
275 |
push_val(env, new_value); |
push_val(env, new_value); |
276 |
} |
} |
277 |
|
|
278 |
|
/* Push a floating point number onto the stack */ |
279 |
|
void push_float(environment *env, float in_val) |
280 |
|
{ |
281 |
|
value *new_value= new_val(env); |
282 |
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|
283 |
|
new_value->content.f= in_val; |
284 |
|
new_value->type= tfloat; |
285 |
|
|
286 |
|
push_val(env, new_value); |
287 |
|
} |
288 |
|
|
289 |
/* Copy a string onto the stack. */ |
/* Copy a string onto the stack. */ |
290 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
291 |
{ |
{ |
292 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
293 |
|
int length= strlen(in_string)+1; |
294 |
|
|
295 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(length); |
296 |
|
env->gc_count += length; |
297 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
298 |
new_value->type= string; |
new_value->type= string; |
299 |
|
|
301 |
} |
} |
302 |
|
|
303 |
/* Mangle a symbol name to a valid C identifier name */ |
/* Mangle a symbol name to a valid C identifier name */ |
304 |
char *mangle_str(const char *old_string){ |
char *mangle_str(const char *old_string) |
305 |
|
{ |
306 |
char validchars[]= "0123456789abcdef"; |
char validchars[]= "0123456789abcdef"; |
307 |
char *new_string, *current; |
char *new_string, *current; |
308 |
|
|
320 |
return new_string; /* The caller must free() it */ |
return new_string; /* The caller must free() it */ |
321 |
} |
} |
322 |
|
|
323 |
extern void mangle(environment *env){ |
extern void mangle(environment *env) |
324 |
|
{ |
325 |
char *new_string; |
char *new_string; |
326 |
|
|
327 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
328 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
329 |
env->err= 1; |
env->err= 1; |
330 |
return; |
return; |
331 |
} |
} |
332 |
|
|
333 |
if(env->head->item->type!=string) { |
if(CAR(env->head)->type!=string) { |
334 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
335 |
env->err= 2; |
env->err= 2; |
336 |
return; |
return; |
337 |
} |
} |
338 |
|
|
339 |
new_string= mangle_str((const char *)(env->head->item->content.ptr)); |
new_string= |
340 |
|
mangle_str((const char *)(CAR(env->head)->content.ptr)); |
341 |
|
|
342 |
toss(env); |
toss(env); |
343 |
if(env->err) return; |
if(env->err) return; |
361 |
char *mangled; /* Mangled function name */ |
char *mangled; /* Mangled function name */ |
362 |
|
|
363 |
new_value= new_val(env); |
new_value= new_val(env); |
364 |
|
protect(new_value); |
365 |
|
new_fvalue= new_val(env); |
366 |
|
protect(new_fvalue); |
367 |
|
|
368 |
/* The new value is a symbol */ |
/* The new value is a symbol */ |
369 |
new_value->type= symb; |
new_value->type= symb; |
391 |
|
|
392 |
mangled= mangle_str(in_string); /* mangle the name */ |
mangled= mangle_str(in_string); /* mangle the name */ |
393 |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
394 |
free(mangled); |
|
395 |
dlerr= dlerror(); |
dlerr= dlerror(); |
396 |
if(dlerr != NULL) { /* If no function was found */ |
if(dlerr != NULL) { /* If no function was found */ |
397 |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
398 |
dlerr= dlerror(); |
dlerr= dlerror(); |
399 |
} |
} |
400 |
|
|
401 |
if(dlerr==NULL) { /* If a function was found */ |
if(dlerr==NULL) { /* If a function was found */ |
|
new_fvalue= new_val(env); /* Create a new value */ |
|
402 |
new_fvalue->type= func; /* The new value is a function pointer */ |
new_fvalue->type= func; /* The new value is a function pointer */ |
403 |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
404 |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
405 |
function value */ |
function value */ |
406 |
} |
} |
407 |
|
|
408 |
|
free(mangled); |
409 |
} |
} |
410 |
|
|
411 |
push_val(env, new_value); |
push_val(env, new_value); |
412 |
|
unprotect(new_value); unprotect(new_fvalue); |
413 |
} |
} |
414 |
|
|
415 |
/* Print newline. */ |
/* Print newline. */ |
419 |
} |
} |
420 |
|
|
421 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
422 |
extern void type(environment *env){ |
extern void type(environment *env) |
423 |
|
{ |
424 |
int typenum; |
int typenum; |
425 |
|
|
426 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
427 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
428 |
env->err=1; |
env->err= 1; |
429 |
return; |
return; |
430 |
} |
} |
431 |
typenum=env->head->item->type; |
|
432 |
|
typenum= CAR(env->head)->type; |
433 |
toss(env); |
toss(env); |
434 |
switch(typenum){ |
switch(typenum){ |
435 |
case integer: |
case integer: |
436 |
push_sym(env, "integer"); |
push_sym(env, "integer"); |
437 |
break; |
break; |
438 |
|
case tfloat: |
439 |
|
push_sym(env, "float"); |
440 |
|
break; |
441 |
case string: |
case string: |
442 |
push_sym(env, "string"); |
push_sym(env, "string"); |
443 |
break; |
break; |
447 |
case func: |
case func: |
448 |
push_sym(env, "function"); |
push_sym(env, "function"); |
449 |
break; |
break; |
450 |
case list: |
case tcons: |
451 |
push_sym(env, "list"); |
push_sym(env, "list"); |
452 |
break; |
break; |
453 |
} |
} |
454 |
} |
} |
455 |
|
|
456 |
/* Prints the top element of the stack. */ |
/* Prints the top element of the stack. */ |
457 |
void print_h(stackitem *stack_head, int noquote) |
void print_h(value *stack_head, int noquote) |
458 |
{ |
{ |
459 |
switch(stack_head->item->type) { |
switch(CAR(stack_head)->type) { |
460 |
case integer: |
case integer: |
461 |
printf("%d", stack_head->item->content.val); |
printf("%d", CAR(stack_head)->content.i); |
462 |
|
break; |
463 |
|
case tfloat: |
464 |
|
printf("%f", CAR(stack_head)->content.f); |
465 |
break; |
break; |
466 |
case string: |
case string: |
467 |
if(noquote) |
if(noquote) |
468 |
printf("%s", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)CAR(stack_head)->content.ptr); |
469 |
else |
else |
470 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("\"%s\"", (char*)CAR(stack_head)->content.ptr); |
471 |
break; |
break; |
472 |
case symb: |
case symb: |
473 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", CAR(stack_head)->content.sym->id); |
474 |
break; |
break; |
475 |
case func: |
case func: |
476 |
printf("#<function %p>", (funcp)(stack_head->item->content.ptr)); |
printf("#<function %p>", (funcp)(CAR(stack_head)->content.ptr)); |
477 |
break; |
break; |
478 |
case list: |
case tcons: |
479 |
/* 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 */ |
480 |
stack_head=(stackitem *)(stack_head->item->content.ptr); |
stack_head= CAR(stack_head); |
481 |
printf("[ "); |
printf("[ "); |
482 |
while(stack_head != NULL) { |
while(stack_head != NULL) { |
483 |
print_h(stack_head, noquote); |
print_h(stack_head, noquote); |
484 |
printf(" "); |
printf(" "); |
485 |
stack_head=stack_head->next; |
stack_head= CDR(stack_head); |
486 |
} |
} |
487 |
printf("]"); |
printf("]"); |
488 |
break; |
break; |
489 |
} |
} |
490 |
} |
} |
491 |
|
|
492 |
extern void print_(environment *env) { |
extern void print_(environment *env) |
493 |
|
{ |
494 |
if(env->head==NULL) { |
if(env->head==NULL) { |
495 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
496 |
env->err=1; |
env->err= 1; |
497 |
return; |
return; |
498 |
} |
} |
499 |
print_h(env->head, 0); |
print_h(env->head, 0); |
508 |
toss(env); |
toss(env); |
509 |
} |
} |
510 |
|
|
511 |
extern void princ_(environment *env) { |
extern void princ_(environment *env) |
512 |
|
{ |
513 |
if(env->head==NULL) { |
if(env->head==NULL) { |
514 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
515 |
env->err=1; |
env->err= 1; |
516 |
return; |
return; |
517 |
} |
} |
518 |
print_h(env->head, 1); |
print_h(env->head, 1); |
527 |
} |
} |
528 |
|
|
529 |
/* Only to be called by function printstack. */ |
/* Only to be called by function printstack. */ |
530 |
void print_st(stackitem *stack_head, long counter) |
void print_st(value *stack_head, long counter) |
531 |
{ |
{ |
532 |
if(stack_head->next != NULL) |
if(CDR(stack_head) != NULL) |
533 |
print_st(stack_head->next, counter+1); |
print_st(CDR(stack_head), counter+1); |
534 |
printf("%ld: ", counter); |
printf("%ld: ", counter); |
535 |
print_h(stack_head, 0); |
print_h(stack_head, 0); |
536 |
nl(); |
nl(); |
543 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
544 |
return; |
return; |
545 |
} |
} |
546 |
|
|
547 |
print_st(env->head, 1); |
print_st(env->head, 1); |
548 |
} |
} |
549 |
|
|
550 |
/* Swap the two top elements on the stack. */ |
/* Swap the two top elements on the stack. */ |
551 |
extern void swap(environment *env) |
extern void swap(environment *env) |
552 |
{ |
{ |
553 |
stackitem *temp= env->head; |
value *temp= env->head; |
554 |
|
|
555 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
556 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
557 |
env->err=1; |
env->err=1; |
558 |
return; |
return; |
559 |
} |
} |
560 |
|
|
561 |
env->head= env->head->next; |
env->head= CDR(env->head); |
562 |
temp->next= env->head->next; |
CDR(temp)= CDR(env->head); |
563 |
env->head->next= temp; |
CDR(env->head)= temp; |
564 |
} |
} |
565 |
|
|
566 |
/* Rotate the first three elements on the stack. */ |
/* Rotate the first three elements on the stack. */ |
567 |
extern void rot(environment *env) |
extern void rot(environment *env) |
568 |
{ |
{ |
569 |
stackitem *temp= env->head; |
value *temp= env->head; |
570 |
|
|
571 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
572 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
573 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
574 |
env->err=1; |
env->err= 1; |
575 |
return; |
return; |
576 |
} |
} |
577 |
|
|
578 |
env->head= env->head->next->next; |
env->head= CDR(CDR(env->head)); |
579 |
temp->next->next= env->head->next; |
CDR(CDR(temp))= CDR(env->head); |
580 |
env->head->next= temp; |
CDR(env->head)= temp; |
581 |
} |
} |
582 |
|
|
583 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
585 |
{ |
{ |
586 |
value *val; |
value *val; |
587 |
|
|
588 |
if(env->head == NULL) { |
if(env->head==NULL) { |
589 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
590 |
env->err=1; |
env->err= 1; |
591 |
return; |
return; |
592 |
} |
} |
593 |
|
|
594 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
595 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
596 |
env->err=2; |
env->err= 2; |
597 |
return; |
return; |
598 |
} |
} |
599 |
|
|
600 |
val=((symbol *)(env->head->item->content.ptr))->val; |
val= CAR(env->head)->content.sym->val; |
601 |
if(val == NULL){ |
if(val == NULL){ |
602 |
printerr("Unbound Variable"); |
printerr("Unbound Variable"); |
603 |
env->err=3; |
env->err= 3; |
604 |
return; |
return; |
605 |
} |
} |
606 |
protect(env, val); |
protect(val); |
607 |
toss(env); /* toss the symbol */ |
toss(env); /* toss the symbol */ |
608 |
if(env->err) return; |
if(env->err) return; |
609 |
push_val(env, val); /* Return its bound value */ |
push_val(env, val); /* Return its bound value */ |
610 |
unprotect(env); |
unprotect(val); |
611 |
} |
} |
612 |
|
|
613 |
/* 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 |
617 |
{ |
{ |
618 |
funcp in_func; |
funcp in_func; |
619 |
value* temp_val; |
value* temp_val; |
620 |
stackitem* iterator; |
value* iterator; |
621 |
|
|
622 |
eval_start: |
eval_start: |
623 |
|
|
624 |
|
gc_maybe(env); |
625 |
|
|
626 |
if(env->head==NULL) { |
if(env->head==NULL) { |
627 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
628 |
env->err=1; |
env->err= 1; |
629 |
return; |
return; |
630 |
} |
} |
631 |
|
|
632 |
switch(env->head->item->type) { |
switch(CAR(env->head)->type) { |
633 |
/* if it's a symbol */ |
/* if it's a symbol */ |
634 |
case symb: |
case symb: |
635 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
636 |
if(env->err) return; |
if(env->err) return; |
637 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(CAR(env->head)->type!=symb){ /* don't recurse symbols */ |
638 |
goto eval_start; |
goto eval_start; |
639 |
} |
} |
640 |
return; |
return; |
641 |
|
|
642 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
643 |
case func: |
case func: |
644 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(CAR(env->head)->content.ptr); |
645 |
toss(env); |
toss(env); |
646 |
if(env->err) return; |
if(env->err) return; |
647 |
return in_func(env); |
return in_func(env); |
648 |
|
|
649 |
/* If it's a list */ |
/* If it's a list */ |
650 |
case list: |
case tcons: |
651 |
temp_val= env->head->item; |
temp_val= CAR(env->head); |
652 |
protect(env, temp_val); |
protect(temp_val); |
653 |
toss(env); |
|
654 |
if(env->err) return; |
toss(env); if(env->err) return; |
655 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= temp_val; |
|
unprotect(env); |
|
656 |
|
|
657 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
658 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
659 |
|
|
660 |
if(env->head->item->type==symb |
if(CAR(env->head)->type==symb |
661 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& CAR(env->head)->content.sym->id[0]==';') { |
662 |
toss(env); |
toss(env); |
663 |
if(env->err) return; |
if(env->err) return; |
664 |
|
|
665 |
if(iterator->next == NULL){ |
if(CDR(iterator)==NULL){ |
666 |
goto eval_start; |
goto eval_start; |
667 |
} |
} |
668 |
eval(env); |
eval(env); |
669 |
if(env->err) return; |
if(env->err) return; |
670 |
} |
} |
671 |
iterator= iterator->next; |
if (CDR(iterator)->type == tcons) |
672 |
|
iterator= CDR(iterator); |
673 |
|
else { |
674 |
|
printerr("Bad Argument Type"); /* Improper list */ |
675 |
|
env->err= 2; |
676 |
|
return; |
677 |
|
} |
678 |
} |
} |
679 |
|
unprotect(temp_val); |
680 |
return; |
return; |
681 |
|
|
682 |
default: |
default: |
685 |
} |
} |
686 |
|
|
687 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
688 |
extern void rev(environment *env){ |
extern void rev(environment *env) |
689 |
stackitem *old_head, *new_head, *item; |
{ |
690 |
|
value *old_head, *new_head, *item; |
691 |
|
|
692 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
693 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
694 |
env->err= 1; |
env->err= 1; |
695 |
return; |
return; |
696 |
} |
} |
697 |
|
|
698 |
if(env->head->item->type!=list) { |
if(CAR(env->head)->type!=tcons) { |
699 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
700 |
env->err= 2; |
env->err= 2; |
701 |
return; |
return; |
702 |
} |
} |
703 |
|
|
704 |
old_head= (stackitem *)(env->head->item->content.ptr); |
old_head= CAR(env->head); |
705 |
new_head= NULL; |
new_head= NULL; |
706 |
while(old_head != NULL){ |
while(old_head!=NULL) { |
707 |
item= old_head; |
item= old_head; |
708 |
old_head= old_head->next; |
old_head= CDR(old_head); |
709 |
item->next= new_head; |
CDR(item)= new_head; |
710 |
new_head= item; |
new_head= item; |
711 |
} |
} |
712 |
env->head->item->content.ptr= new_head; |
CAR(env->head)= new_head; |
713 |
} |
} |
714 |
|
|
715 |
/* Make a list. */ |
/* Make a list. */ |
716 |
extern void pack(environment *env) |
extern void pack(environment *env) |
717 |
{ |
{ |
718 |
stackitem *iterator, *temp; |
value *iterator, *temp; |
|
value *pack; |
|
719 |
|
|
720 |
iterator= env->head; |
iterator= env->head; |
|
|
|
721 |
if(iterator==NULL |
if(iterator==NULL |
722 |
|| (iterator->item->type==symb |
|| (CAR(iterator)->type==symb |
723 |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
724 |
temp= NULL; |
temp= NULL; |
725 |
toss(env); |
toss(env); |
726 |
} else { |
} else { |
727 |
/* Search for first delimiter */ |
/* Search for first delimiter */ |
728 |
while(iterator->next!=NULL |
while(CDR(iterator)!=NULL |
729 |
&& (iterator->next->item->type!=symb |
&& (CAR(CDR(iterator))->type!=symb |
730 |
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
731 |
iterator= iterator->next; |
iterator= CDR(iterator); |
732 |
|
|
733 |
/* Extract list */ |
/* Extract list */ |
734 |
temp= env->head; |
temp= env->head; |
735 |
env->head= iterator->next; |
env->head= CDR(iterator); |
736 |
iterator->next= NULL; |
CDR(iterator)= NULL; |
737 |
|
|
738 |
if(env->head!=NULL) |
if(env->head!=NULL) |
739 |
toss(env); |
toss(env); |
740 |
} |
} |
741 |
|
|
742 |
/* Push list */ |
/* Push list */ |
|
pack= new_val(env); |
|
|
pack->type= list; |
|
|
pack->content.ptr= temp; |
|
743 |
|
|
744 |
push_val(env, pack); |
push_val(env, temp); |
745 |
rev(env); |
rev(env); |
746 |
} |
} |
747 |
|
|
748 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
749 |
extern void expand(environment *env) |
extern void expand(environment *env) |
750 |
{ |
{ |
751 |
stackitem *temp, *new_head; |
value *temp, *new_head; |
752 |
|
|
753 |
/* Is top element a list? */ |
/* Is top element a list? */ |
754 |
if(env->head==NULL) { |
if(env->head==NULL) { |
756 |
env->err= 1; |
env->err= 1; |
757 |
return; |
return; |
758 |
} |
} |
759 |
if(env->head->item->type!=list) { |
|
760 |
|
if(CAR(env->head)->type!=tcons) { |
761 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
762 |
env->err= 2; |
env->err= 2; |
763 |
return; |
return; |
769 |
return; |
return; |
770 |
|
|
771 |
/* The first list element is the new stack head */ |
/* The first list element is the new stack head */ |
772 |
new_head= temp= env->head->item->content.ptr; |
new_head= temp= CAR(env->head); |
773 |
|
|
774 |
toss(env); |
toss(env); |
775 |
|
|
776 |
/* Find the end of the list */ |
/* Find the end of the list */ |
777 |
while(temp->next!=NULL) |
while(CDR(temp)->content.ptr != NULL) { |
778 |
temp= temp->next; |
if (CDR(temp)->type == tcons) |
779 |
|
temp= CDR(temp); |
780 |
|
else { |
781 |
|
printerr("Bad Argument Type"); /* Improper list */ |
782 |
|
env->err= 2; |
783 |
|
return; |
784 |
|
} |
785 |
|
} |
786 |
|
|
787 |
/* Connect the tail of the list with the old stack head */ |
/* Connect the tail of the list with the old stack head */ |
788 |
temp->next= env->head; |
CDR(temp)= env->head; |
789 |
env->head= new_head; /* ...and voila! */ |
env->head= new_head; /* ...and voila! */ |
790 |
|
|
791 |
} |
} |
794 |
extern void eq(environment *env) |
extern void eq(environment *env) |
795 |
{ |
{ |
796 |
void *left, *right; |
void *left, *right; |
|
int result; |
|
797 |
|
|
798 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
799 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
800 |
env->err= 1; |
env->err= 1; |
801 |
return; |
return; |
802 |
} |
} |
803 |
|
|
804 |
left= env->head->item->content.ptr; |
left= CAR(env->head)->content.ptr; |
805 |
swap(env); |
right= CAR(CDR(env->head))->content.ptr; |
|
right= env->head->item->content.ptr; |
|
|
result= (left==right); |
|
|
|
|
806 |
toss(env); toss(env); |
toss(env); toss(env); |
807 |
push_int(env, result); |
|
808 |
|
push_int(env, left==right); |
809 |
} |
} |
810 |
|
|
811 |
/* Negates the top element on the stack. */ |
/* Negates the top element on the stack. */ |
813 |
{ |
{ |
814 |
int val; |
int val; |
815 |
|
|
816 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
817 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
818 |
env->err= 1; |
env->err= 1; |
819 |
return; |
return; |
820 |
} |
} |
821 |
|
|
822 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
823 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
824 |
env->err= 2; |
env->err= 2; |
825 |
return; |
return; |
826 |
} |
} |
827 |
|
|
828 |
val= env->head->item->content.val; |
val= CAR(env->head)->content.i; |
829 |
toss(env); |
toss(env); |
830 |
push_int(env, !val); |
push_int(env, !val); |
831 |
} |
} |
844 |
symbol *sym; |
symbol *sym; |
845 |
|
|
846 |
/* 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 */ |
847 |
if(env->head==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
848 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
849 |
env->err= 1; |
env->err= 1; |
850 |
return; |
return; |
851 |
} |
} |
852 |
|
|
853 |
if(env->head->item->type!=symb) { |
if(CAR(env->head)->type!=symb) { |
854 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
855 |
env->err= 2; |
env->err= 2; |
856 |
return; |
return; |
857 |
} |
} |
858 |
|
|
859 |
/* long names are a pain */ |
/* long names are a pain */ |
860 |
sym= env->head->item->content.ptr; |
sym= CAR(env->head)->content.ptr; |
861 |
|
|
862 |
/* Bind the symbol to the value */ |
/* Bind the symbol to the value */ |
863 |
sym->val= env->head->next->item; |
sym->val= CAR(CDR(env->head)); |
864 |
|
|
865 |
toss(env); toss(env); |
toss(env); toss(env); |
866 |
} |
} |
868 |
/* Quit stack. */ |
/* Quit stack. */ |
869 |
extern void quit(environment *env) |
extern void quit(environment *env) |
870 |
{ |
{ |
871 |
long i; |
int i; |
872 |
|
|
873 |
clear(env); |
clear(env); |
874 |
|
|
881 |
} |
} |
882 |
|
|
883 |
env->gc_limit= 0; |
env->gc_limit= 0; |
884 |
gc_init(env); |
gc_maybe(env); |
885 |
|
|
886 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
887 |
free(env->free_string); |
free(env->free_string); |
888 |
|
|
889 |
|
#ifdef __linux__ |
890 |
muntrace(); |
muntrace(); |
891 |
|
#endif |
892 |
|
|
893 |
exit(EXIT_SUCCESS); |
exit(EXIT_SUCCESS); |
894 |
} |
} |
916 |
} |
} |
917 |
|
|
918 |
/* Internal forget function */ |
/* Internal forget function */ |
919 |
void forget_sym(symbol **hash_entry) { |
void forget_sym(symbol **hash_entry) |
920 |
|
{ |
921 |
symbol *temp; |
symbol *temp; |
922 |
|
|
923 |
temp= *hash_entry; |
temp= *hash_entry; |
931 |
extern void forget(environment *env) |
extern void forget(environment *env) |
932 |
{ |
{ |
933 |
char* sym_id; |
char* sym_id; |
934 |
stackitem *stack_head= env->head; |
value *stack_head= env->head; |
935 |
|
|
936 |
if(stack_head==NULL) { |
if(stack_head==NULL) { |
937 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
938 |
env->err=1; |
env->err= 1; |
939 |
return; |
return; |
940 |
} |
} |
941 |
|
|
942 |
if(stack_head->item->type!=symb) { |
if(CAR(stack_head)->type!=symb) { |
943 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
944 |
env->err=2; |
env->err= 2; |
945 |
return; |
return; |
946 |
} |
} |
947 |
|
|
948 |
sym_id= ((symbol*)(stack_head->item->content.ptr))->id; |
sym_id= CAR(stack_head)->content.sym->id; |
949 |
toss(env); |
toss(env); |
950 |
|
|
951 |
return forget_sym(hash(env->symbols, sym_id)); |
return forget_sym(hash(env->symbols, sym_id)); |
952 |
} |
} |
953 |
|
|
954 |
/* Returns the current error number to the stack */ |
/* Returns the current error number to the stack */ |
955 |
extern void errn(environment *env){ |
extern void errn(environment *env) |
956 |
|
{ |
957 |
push_int(env, env->err); |
push_int(env, env->err); |
958 |
} |
} |
959 |
|
|
963 |
|
|
964 |
int c; /* getopt option character */ |
int c; /* getopt option character */ |
965 |
|
|
966 |
|
#ifdef __linux__ |
967 |
mtrace(); |
mtrace(); |
968 |
|
#endif |
969 |
|
|
970 |
init_env(&myenv); |
init_env(&myenv); |
971 |
|
|
1019 |
if (myenv.err==4) { |
if (myenv.err==4) { |
1020 |
return EXIT_SUCCESS; /* EOF */ |
return EXIT_SUCCESS; /* EOF */ |
1021 |
} else if(myenv.head!=NULL |
} else if(myenv.head!=NULL |
1022 |
&& myenv.head->item->type==symb |
&& CAR(myenv.head)->type==symb |
1023 |
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
&& CAR(myenv.head)->content.sym->id[0] |
1024 |
|
==';') { |
1025 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1026 |
eval(&myenv); |
eval(&myenv); |
1027 |
} |
} |
1028 |
gc_init(&myenv); |
gc_maybe(&myenv); |
1029 |
} |
} |
1030 |
quit(&myenv); |
quit(&myenv); |
1031 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
1032 |
} |
} |
1033 |
|
|
1034 |
/* "+" */ |
/* "+" */ |
1035 |
extern void sx_2b(environment *env) { |
extern void sx_2b(environment *env) |
1036 |
|
{ |
1037 |
int a, b; |
int a, b; |
1038 |
|
float fa, fb; |
1039 |
size_t len; |
size_t len; |
1040 |
char* new_string; |
char* new_string; |
1041 |
value *a_val, *b_val; |
value *a_val, *b_val; |
1042 |
|
|
1043 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1044 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1045 |
env->err= 1; |
env->err= 1; |
1046 |
return; |
return; |
1047 |
} |
} |
1048 |
|
|
1049 |
if(env->head->item->type==string |
if(CAR(env->head)->type==string |
1050 |
&& env->head->next->item->type==string) { |
&& CAR(CDR(env->head))->type==string) { |
1051 |
a_val= env->head->item; |
a_val= CAR(env->head); |
1052 |
b_val= env->head->next->item; |
b_val= CAR(CDR(env->head)); |
1053 |
protect(env, a_val); protect(env, b_val); |
protect(a_val); protect(b_val); |
1054 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1055 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1056 |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
1058 |
strcpy(new_string, b_val->content.ptr); |
strcpy(new_string, b_val->content.ptr); |
1059 |
strcat(new_string, a_val->content.ptr); |
strcat(new_string, a_val->content.ptr); |
1060 |
push_cstring(env, new_string); |
push_cstring(env, new_string); |
1061 |
unprotect(env); unprotect(env); |
unprotect(a_val); unprotect(b_val); |
1062 |
free(new_string); |
free(new_string); |
1063 |
|
|
1064 |
return; |
return; |
1065 |
} |
} |
1066 |
|
|
1067 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
1068 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1069 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
1070 |
env->err=2; |
toss(env); if(env->err) return; |
1071 |
|
b= CAR(env->head)->content.i; |
1072 |
|
toss(env); if(env->err) return; |
1073 |
|
push_int(env, b+a); |
1074 |
|
|
1075 |
return; |
return; |
1076 |
} |
} |
1077 |
a= env->head->item->content.val; |
|
1078 |
toss(env); if(env->err) return; |
if(CAR(env->head)->type==tfloat |
1079 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
1080 |
b= env->head->item->content.val; |
fa= CAR(env->head)->content.f; |
1081 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1082 |
push_int(env, a+b); |
fb= CAR(env->head)->content.f; |
1083 |
|
toss(env); if(env->err) return; |
1084 |
|
push_float(env, fb+fa); |
1085 |
|
|
1086 |
|
return; |
1087 |
|
} |
1088 |
|
|
1089 |
|
if(CAR(env->head)->type==tfloat |
1090 |
|
&& CAR(CDR(env->head))->type==integer) { |
1091 |
|
fa= CAR(env->head)->content.f; |
1092 |
|
toss(env); if(env->err) return; |
1093 |
|
b= CAR(env->head)->content.i; |
1094 |
|
toss(env); if(env->err) return; |
1095 |
|
push_float(env, b+fa); |
1096 |
|
|
1097 |
|
return; |
1098 |
|
} |
1099 |
|
|
1100 |
|
if(CAR(env->head)->type==integer |
1101 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
1102 |
|
a= CAR(env->head)->content.i; |
1103 |
|
toss(env); if(env->err) return; |
1104 |
|
fb= CAR(env->head)->content.f; |
1105 |
|
toss(env); if(env->err) return; |
1106 |
|
push_float(env, fb+a); |
1107 |
|
|
1108 |
|
return; |
1109 |
|
} |
1110 |
|
|
1111 |
|
printerr("Bad Argument Type"); |
1112 |
|
env->err=2; |
1113 |
} |
} |
1114 |
|
|
1115 |
/* "-" */ |
/* "-" */ |
1116 |
extern void sx_2d(environment *env) { |
extern void sx_2d(environment *env) |
1117 |
|
{ |
1118 |
int a, b; |
int a, b; |
1119 |
|
float fa, fb; |
1120 |
|
|
1121 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1122 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1123 |
env->err=1; |
env->err=1; |
1124 |
return; |
return; |
1125 |
} |
} |
1126 |
|
|
1127 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
1128 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1129 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
1130 |
env->err=2; |
toss(env); if(env->err) return; |
1131 |
|
b= CAR(env->head)->content.i; |
1132 |
|
toss(env); if(env->err) return; |
1133 |
|
push_int(env, b-a); |
1134 |
|
|
1135 |
return; |
return; |
1136 |
} |
} |
1137 |
|
|
1138 |
a=env->head->item->content.val; |
if(CAR(env->head)->type==tfloat |
1139 |
toss(env); if(env->err) return; |
&& CAR(CDR(env->head))->type==tfloat) { |
1140 |
b=env->head->item->content.val; |
fa= CAR(env->head)->content.f; |
1141 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1142 |
push_int(env, b-a); |
fb= CAR(env->head)->content.f; |
1143 |
|
toss(env); if(env->err) return; |
1144 |
|
push_float(env, fb-fa); |
1145 |
|
|
1146 |
|
return; |
1147 |
|
} |
1148 |
|
|
1149 |
|
if(CAR(env->head)->type==tfloat |
1150 |
|
&& CAR(CDR(env->head))->type==integer) { |
1151 |
|
fa= CAR(env->head)->content.f; |
1152 |
|
toss(env); if(env->err) return; |
1153 |
|
b= CAR(env->head)->content.i; |
1154 |
|
toss(env); if(env->err) return; |
1155 |
|
push_float(env, b-fa); |
1156 |
|
|
1157 |
|
return; |
1158 |
|
} |
1159 |
|
|
1160 |
|
if(CAR(env->head)->type==integer |
1161 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
1162 |
|
a= CAR(env->head)->content.i; |
1163 |
|
toss(env); if(env->err) return; |
1164 |
|
fb= CAR(env->head)->content.f; |
1165 |
|
toss(env); if(env->err) return; |
1166 |
|
push_float(env, fb-a); |
1167 |
|
|
1168 |
|
return; |
1169 |
|
} |
1170 |
|
|
1171 |
|
printerr("Bad Argument Type"); |
1172 |
|
env->err=2; |
1173 |
} |
} |
1174 |
|
|
1175 |
/* ">" */ |
/* ">" */ |
1176 |
extern void sx_3e(environment *env) { |
extern void sx_3e(environment *env) |
1177 |
|
{ |
1178 |
int a, b; |
int a, b; |
1179 |
|
float fa, fb; |
1180 |
|
|
1181 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1182 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1183 |
env->err=1; |
env->err= 1; |
1184 |
return; |
return; |
1185 |
} |
} |
1186 |
|
|
1187 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
1188 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
1189 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
1190 |
env->err=2; |
toss(env); if(env->err) return; |
1191 |
|
b= CAR(env->head)->content.i; |
1192 |
|
toss(env); if(env->err) return; |
1193 |
|
push_int(env, b>a); |
1194 |
|
|
1195 |
return; |
return; |
1196 |
} |
} |
1197 |
|
|
1198 |
a=env->head->item->content.val; |
if(CAR(env->head)->type==tfloat |
1199 |
toss(env); if(env->err) return; |
&& CAR(CDR(env->head))->type==tfloat) { |
1200 |
b=env->head->item->content.val; |
fa= CAR(env->head)->content.f; |
1201 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1202 |
push_int(env, b>a); |
fb= CAR(env->head)->content.f; |
1203 |
|
toss(env); if(env->err) return; |
1204 |
|
push_int(env, fb>fa); |
1205 |
|
|
1206 |
|
return; |
1207 |
|
} |
1208 |
|
|
1209 |
|
if(CAR(env->head)->type==tfloat |
1210 |
|
&& CAR(CDR(env->head))->type==integer) { |
1211 |
|
fa= CAR(env->head)->content.f; |
1212 |
|
toss(env); if(env->err) return; |
1213 |
|
b= CAR(env->head)->content.i; |
1214 |
|
toss(env); if(env->err) return; |
1215 |
|
push_int(env, b>fa); |
1216 |
|
|
1217 |
|
return; |
1218 |
|
} |
1219 |
|
|
1220 |
|
if(CAR(env->head)->type==integer |
1221 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
1222 |
|
a= CAR(env->head)->content.i; |
1223 |
|
toss(env); if(env->err) return; |
1224 |
|
fb= CAR(env->head)->content.f; |
1225 |
|
toss(env); if(env->err) return; |
1226 |
|
push_int(env, fb>a); |
1227 |
|
|
1228 |
|
return; |
1229 |
|
} |
1230 |
|
|
1231 |
|
printerr("Bad Argument Type"); |
1232 |
|
env->err= 2; |
1233 |
|
} |
1234 |
|
|
1235 |
|
/* "<" */ |
1236 |
|
extern void sx_3c(environment *env) |
1237 |
|
{ |
1238 |
|
swap(env); if(env->err) return; |
1239 |
|
sx_3e(env); |
1240 |
|
} |
1241 |
|
|
1242 |
|
/* "<=" */ |
1243 |
|
extern void sx_3c3d(environment *env) |
1244 |
|
{ |
1245 |
|
sx_3e(env); if(env->err) return; |
1246 |
|
not(env); |
1247 |
|
} |
1248 |
|
|
1249 |
|
/* ">=" */ |
1250 |
|
extern void sx_3e3d(environment *env) |
1251 |
|
{ |
1252 |
|
sx_3c(env); if(env->err) return; |
1253 |
|
not(env); |
1254 |
} |
} |
1255 |
|
|
1256 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1257 |
value *copy_val(environment *env, value *old_value){ |
value *copy_val(environment *env, value *old_value) |
1258 |
stackitem *old_item, *new_item, *prev_item; |
{ |
1259 |
|
value *new_value; |
1260 |
|
|
1261 |
value *new_value= new_val(env); |
if(old_value==NULL) |
1262 |
|
return NULL; |
1263 |
|
|
1264 |
protect(env, old_value); |
protect(old_value); |
1265 |
|
new_value= new_val(env); |
1266 |
|
protect(new_value); |
1267 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1268 |
|
|
1269 |
switch(old_value->type){ |
switch(old_value->type){ |
1270 |
|
case tfloat: |
1271 |
case integer: |
case integer: |
1272 |
new_value->content.val= old_value->content.val; |
case func: |
1273 |
|
case symb: |
1274 |
|
new_value->content= old_value->content; |
1275 |
break; |
break; |
1276 |
case string: |
case string: |
1277 |
(char *)(new_value->content.ptr)= |
(char *)(new_value->content.ptr)= |
1278 |
strdup((char *)(old_value->content.ptr)); |
strdup((char *)(old_value->content.ptr)); |
1279 |
break; |
break; |
1280 |
case func: |
case tcons: |
1281 |
case symb: |
new_value= NULL; |
|
new_value->content.ptr= old_value->content.ptr; |
|
|
break; |
|
|
case list: |
|
|
new_value->content.ptr= NULL; |
|
|
|
|
|
prev_item= NULL; |
|
|
old_item= (stackitem*)(old_value->content.ptr); |
|
1282 |
|
|
1283 |
while(old_item != NULL) { /* While list is not empty */ |
new_value->content.c= malloc(sizeof(cons)); |
1284 |
new_item= malloc(sizeof(stackitem)); |
CAR(new_value)= copy_val(env, CAR(old_value)); /* recurse */ |
1285 |
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; |
|
|
} |
|
1286 |
break; |
break; |
1287 |
} |
} |
1288 |
|
|
1289 |
unprotect(env); |
unprotect(old_value); unprotect(new_value); |
1290 |
|
|
1291 |
return new_value; |
return new_value; |
1292 |
} |
} |
1293 |
|
|
1294 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1295 |
extern void sx_647570(environment *env) { |
extern void sx_647570(environment *env) |
1296 |
if((env->head)==NULL) { |
{ |
1297 |
|
if(env->head==NULL) { |
1298 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1299 |
env->err= 1; |
env->err= 1; |
1300 |
return; |
return; |
1301 |
} |
} |
1302 |
push_val(env, copy_val(env, env->head->item)); |
push_val(env, copy_val(env, CAR(env->head))); |
1303 |
} |
} |
1304 |
|
|
1305 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1306 |
extern void sx_6966(environment *env) { |
extern void sx_6966(environment *env) |
1307 |
|
{ |
1308 |
int truth; |
int truth; |
1309 |
|
|
1310 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1311 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1312 |
env->err= 1; |
env->err= 1; |
1313 |
return; |
return; |
1314 |
} |
} |
1315 |
|
|
1316 |
if(env->head->next->item->type != integer) { |
if(CAR(CDR(env->head))->type != integer) { |
1317 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1318 |
env->err=2; |
env->err= 2; |
1319 |
return; |
return; |
1320 |
} |
} |
1321 |
|
|
1322 |
swap(env); |
swap(env); |
1323 |
if(env->err) return; |
if(env->err) return; |
1324 |
|
|
1325 |
truth=env->head->item->content.val; |
truth= CAR(env->head)->content.i; |
1326 |
|
|
1327 |
toss(env); |
toss(env); |
1328 |
if(env->err) return; |
if(env->err) return; |
1334 |
} |
} |
1335 |
|
|
1336 |
/* If-Then-Else */ |
/* If-Then-Else */ |
1337 |
extern void ifelse(environment *env) { |
extern void ifelse(environment *env) |
1338 |
|
{ |
1339 |
int truth; |
int truth; |
1340 |
|
|
1341 |
if((env->head)==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
1342 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
1343 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1344 |
env->err=1; |
env->err= 1; |
1345 |
return; |
return; |
1346 |
} |
} |
1347 |
|
|
1348 |
if(env->head->next->next->item->type != integer) { |
if(CAR(CDR(CDR(env->head)))->type!=integer) { |
1349 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1350 |
env->err=2; |
env->err= 2; |
1351 |
return; |
return; |
1352 |
} |
} |
1353 |
|
|
1354 |
rot(env); |
rot(env); |
1355 |
if(env->err) return; |
if(env->err) return; |
1356 |
|
|
1357 |
truth=env->head->item->content.val; |
truth= CAR(env->head)->content.i; |
1358 |
|
|
1359 |
toss(env); |
toss(env); |
1360 |
if(env->err) return; |
if(env->err) return; |
1369 |
eval(env); |
eval(env); |
1370 |
} |
} |
1371 |
|
|
1372 |
/* "while" */ |
extern void sx_656c7365(environment *env) |
1373 |
extern void sx_7768696c65(environment *env) { |
{ |
1374 |
|
if(env->head==NULL || CDR(env->head)==NULL |
1375 |
|
|| CDR(CDR(env->head))==NULL || CDR(CDR(CDR(env->head)))==NULL) { |
1376 |
|
printerr("Too Few Arguments"); |
1377 |
|
env->err= 1; |
1378 |
|
return; |
1379 |
|
} |
1380 |
|
|
1381 |
|
if(CAR(CDR(env->head))->type!=symb |
1382 |
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "if")!=0) { |
1383 |
|
printerr("Bad Argument Type"); |
1384 |
|
env->err= 2; |
1385 |
|
return; |
1386 |
|
} |
1387 |
|
|
1388 |
|
swap(env); toss(env); |
1389 |
|
ifelse(env); |
1390 |
|
} |
1391 |
|
|
1392 |
|
/* "while" */ |
1393 |
|
extern void sx_7768696c65(environment *env) |
1394 |
|
{ |
1395 |
int truth; |
int truth; |
1396 |
value *loop, *test; |
value *loop, *test; |
1397 |
|
|
1398 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1399 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1400 |
env->err=1; |
env->err= 1; |
1401 |
return; |
return; |
1402 |
} |
} |
1403 |
|
|
1404 |
loop= env->head->item; |
loop= CAR(env->head); |
1405 |
protect(env, loop); |
protect(loop); |
1406 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1407 |
|
|
1408 |
test= env->head->item; |
test= CAR(env->head); |
1409 |
protect(env, test); |
protect(test); |
1410 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1411 |
|
|
1412 |
do { |
do { |
1413 |
push_val(env, test); |
push_val(env, test); |
1414 |
eval(env); |
eval(env); |
1415 |
|
|
1416 |
if(env->head->item->type != integer) { |
if(CAR(env->head)->type != integer) { |
1417 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1418 |
env->err= 2; |
env->err= 2; |
1419 |
return; |
return; |
1420 |
} |
} |
1421 |
|
|
1422 |
truth= env->head->item->content.val; |
truth= CAR(env->head)->content.i; |
1423 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1424 |
|
|
1425 |
if(truth) { |
if(truth) { |
1431 |
|
|
1432 |
} while(truth); |
} while(truth); |
1433 |
|
|
1434 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(test); |
1435 |
} |
} |
1436 |
|
|
1437 |
|
|
1438 |
/* "for"; for-loop */ |
/* "for"; for-loop */ |
1439 |
extern void sx_666f72(environment *env) { |
extern void sx_666f72(environment *env) |
1440 |
|
{ |
1441 |
value *loop; |
value *loop; |
1442 |
int foo1, foo2; |
int foo1, foo2; |
1443 |
|
|
1444 |
if(env->head==NULL || env->head->next==NULL |
if(env->head==NULL || CDR(env->head)==NULL |
1445 |
|| env->head->next->next==NULL) { |
|| CDR(CDR(env->head))==NULL) { |
1446 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1447 |
env->err= 1; |
env->err= 1; |
1448 |
return; |
return; |
1449 |
} |
} |
1450 |
|
|
1451 |
if(env->head->next->item->type!=integer |
if(CAR(CDR(env->head))->type!=integer |
1452 |
|| env->head->next->next->item->type!=integer) { |
|| CAR(CDR(CDR(env->head)))->type!=integer) { |
1453 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1454 |
env->err= 2; |
env->err= 2; |
1455 |
return; |
return; |
1456 |
} |
} |
1457 |
|
|
1458 |
loop= env->head->item; |
loop= CAR(env->head); |
1459 |
protect(env, loop); |
protect(loop); |
1460 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1461 |
|
|
1462 |
foo2= env->head->item->content.val; |
foo2= CAR(env->head)->content.i; |
1463 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1464 |
|
|
1465 |
foo1= env->head->item->content.val; |
foo1= CAR(env->head)->content.i; |
1466 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1467 |
|
|
1468 |
if(foo1<=foo2) { |
if(foo1<=foo2) { |
1480 |
foo1--; |
foo1--; |
1481 |
} |
} |
1482 |
} |
} |
1483 |
unprotect(env); |
unprotect(loop); |
1484 |
} |
} |
1485 |
|
|
1486 |
/* Variant of for-loop */ |
/* Variant of for-loop */ |
1487 |
extern void foreach(environment *env) { |
extern void foreach(environment *env) |
1488 |
|
{ |
1489 |
value *loop, *foo; |
value *loop, *foo; |
1490 |
stackitem *iterator; |
value *iterator; |
1491 |
|
|
1492 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1493 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1494 |
env->err= 1; |
env->err= 1; |
1495 |
return; |
return; |
1496 |
} |
} |
1497 |
|
|
1498 |
if(env->head->next->item->type != list) { |
if(CAR(CDR(env->head))->type!=tcons) { |
1499 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1500 |
env->err= 2; |
env->err= 2; |
1501 |
return; |
return; |
1502 |
} |
} |
1503 |
|
|
1504 |
loop= env->head->item; |
loop= CAR(env->head); |
1505 |
protect(env, loop); |
protect(loop); |
1506 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1507 |
|
|
1508 |
foo= env->head->item; |
foo= CAR(env->head); |
1509 |
protect(env, foo); |
protect(foo); |
1510 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1511 |
|
|
1512 |
iterator= foo->content.ptr; |
iterator= foo; |
1513 |
|
|
1514 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
1515 |
push_val(env, iterator->item); |
push_val(env, CAR(iterator)); |
1516 |
push_val(env, loop); |
push_val(env, loop); |
1517 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1518 |
iterator= iterator->next; |
if (iterator->type == tcons){ |
1519 |
|
iterator= CDR(iterator); |
1520 |
|
} else { |
1521 |
|
printerr("Bad Argument Type"); /* Improper list */ |
1522 |
|
env->err= 2; |
1523 |
|
break; |
1524 |
|
} |
1525 |
} |
} |
1526 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(foo); |
1527 |
} |
} |
1528 |
|
|
1529 |
/* "to" */ |
/* "to" */ |
1530 |
extern void to(environment *env) { |
extern void to(environment *env) |
1531 |
int i, start, ending; |
{ |
1532 |
stackitem *temp_head; |
int ending, start, i; |
1533 |
value *temp_val; |
value *iterator, *temp; |
1534 |
|
|
1535 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1536 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1537 |
env->err=1; |
env->err= 1; |
1538 |
return; |
return; |
1539 |
} |
} |
1540 |
|
|
1541 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1542 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1543 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1544 |
env->err=2; |
env->err= 2; |
1545 |
return; |
return; |
1546 |
} |
} |
1547 |
|
|
1548 |
ending= env->head->item->content.val; |
ending= CAR(env->head)->content.i; |
1549 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1550 |
start= env->head->item->content.val; |
start= CAR(env->head)->content.i; |
1551 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1552 |
|
|
1553 |
temp_head= env->head; |
push_sym(env, "["); |
|
env->head= NULL; |
|
1554 |
|
|
1555 |
if(ending>=start) { |
if(ending>=start) { |
1556 |
for(i= ending; i>=start; i--) |
for(i= ending; i>=start; i--) |
1560 |
push_int(env, i); |
push_int(env, i); |
1561 |
} |
} |
1562 |
|
|
1563 |
temp_val= new_val(env); |
iterator= env->head; |
1564 |
temp_val->content.ptr= env->head; |
|
1565 |
temp_val->type= list; |
if(iterator==NULL |
1566 |
env->head= temp_head; |
|| (CAR(iterator)->type==symb |
1567 |
push_val(env, temp_val); |
&& CAR(iterator)->content.sym->id[0]=='[')) { |
1568 |
|
temp= NULL; |
1569 |
|
toss(env); |
1570 |
|
} else { |
1571 |
|
/* Search for first delimiter */ |
1572 |
|
while(CDR(iterator)!=NULL |
1573 |
|
&& (CAR(CDR(iterator))->type!=symb |
1574 |
|
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
1575 |
|
iterator= CDR(iterator); |
1576 |
|
|
1577 |
|
/* Extract list */ |
1578 |
|
temp= env->head; |
1579 |
|
env->head= CDR(iterator); |
1580 |
|
CDR(iterator)= NULL; |
1581 |
|
|
1582 |
|
if(env->head!=NULL) |
1583 |
|
toss(env); |
1584 |
|
} |
1585 |
|
|
1586 |
|
/* Push list */ |
1587 |
|
push_val(env, temp); |
1588 |
} |
} |
1589 |
|
|
1590 |
/* Read a string */ |
/* Read a string */ |
1591 |
extern void readline(environment *env) { |
extern void readline(environment *env) |
1592 |
|
{ |
1593 |
char in_string[101]; |
char in_string[101]; |
1594 |
|
|
1595 |
if(fgets(in_string, 100, env->inputstream)==NULL) |
if(fgets(in_string, 100, env->inputstream)==NULL) |
1599 |
} |
} |
1600 |
|
|
1601 |
/* "read"; Read a value and place on stack */ |
/* "read"; Read a value and place on stack */ |
1602 |
extern void sx_72656164(environment *env) { |
extern void sx_72656164(environment *env) |
1603 |
|
{ |
1604 |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
1605 |
const char strform[]= "\"%[^\"]\"%n"; |
const char strform[]= "\"%[^\"]\"%n"; |
1606 |
const char intform[]= "%i%n"; |
const char intform[]= "%i%n"; |
1607 |
|
const char fltform[]= "%f%n"; |
1608 |
const char blankform[]= "%*[ \t]%n"; |
const char blankform[]= "%*[ \t]%n"; |
1609 |
const char ebrackform[]= "]%n"; |
const char ebrackform[]= "]%n"; |
1610 |
const char semicform[]= ";%n"; |
const char semicform[]= ";%n"; |
1611 |
const char bbrackform[]= "[%n"; |
const char bbrackform[]= "[%n"; |
1612 |
|
|
1613 |
int itemp, readlength= -1; |
int itemp, readlength= -1; |
1614 |
|
int count= -1; |
1615 |
|
float ftemp; |
1616 |
static int depth= 0; |
static int depth= 0; |
1617 |
char *match; |
char *match, *ctemp; |
1618 |
size_t inlength; |
size_t inlength; |
1619 |
|
|
1620 |
if(env->in_string==NULL) { |
if(env->in_string==NULL) { |
1623 |
} |
} |
1624 |
readline(env); if(env->err) return; |
readline(env); if(env->err) return; |
1625 |
|
|
1626 |
if(((char *)(env->head->item->content.ptr))[0]=='\0'){ |
if(((char *)(CAR(env->head)->content.ptr))[0]=='\0'){ |
1627 |
env->err= 4; /* "" means EOF */ |
env->err= 4; /* "" means EOF */ |
1628 |
return; |
return; |
1629 |
} |
} |
1630 |
|
|
1631 |
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
env->in_string= malloc(strlen(CAR(env->head)->content.ptr)+1); |
1632 |
env->free_string= env->in_string; /* Save the original pointer */ |
env->free_string= env->in_string; /* Save the original pointer */ |
1633 |
strcpy(env->in_string, env->head->item->content.ptr); |
strcpy(env->in_string, CAR(env->head)->content.ptr); |
1634 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1635 |
} |
} |
1636 |
|
|
1637 |
inlength= strlen(env->in_string)+1; |
inlength= strlen(env->in_string)+1; |
1638 |
match= malloc(inlength); |
match= malloc(inlength); |
1639 |
|
|
1640 |
if(sscanf(env->in_string, blankform, &readlength)!=EOF |
if(sscanf(env->in_string, blankform, &readlength) != EOF |
1641 |
&& readlength != -1) { |
&& readlength != -1) { |
1642 |
; |
; |
1643 |
} else if(sscanf(env->in_string, intform, &itemp, &readlength) != EOF |
} else if(sscanf(env->in_string, fltform, &ftemp, &readlength) != EOF |
1644 |
&& readlength != -1) { |
&& readlength != -1) { |
1645 |
push_int(env, itemp); |
if(sscanf(env->in_string, intform, &itemp, &count) != EOF |
1646 |
|
&& count==readlength) { |
1647 |
|
push_int(env, itemp); |
1648 |
|
} else { |
1649 |
|
push_float(env, ftemp); |
1650 |
|
} |
1651 |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
} else if(sscanf(env->in_string, strform, match, &readlength) != EOF |
1652 |
&& readlength != -1) { |
&& readlength != -1) { |
1653 |
push_cstring(env, match); |
push_cstring(env, match); |
1669 |
free(env->free_string); |
free(env->free_string); |
1670 |
env->in_string = env->free_string = NULL; |
env->in_string = env->free_string = NULL; |
1671 |
} |
} |
1672 |
if ( env->in_string != NULL) { |
if (env->in_string != NULL) { |
1673 |
env->in_string += readlength; |
env->in_string += readlength; |
1674 |
} |
} |
1675 |
|
|
1679 |
return sx_72656164(env); |
return sx_72656164(env); |
1680 |
} |
} |
1681 |
|
|
1682 |
extern void beep(environment *env) { |
#ifdef __linux__ |
1683 |
|
extern void beep(environment *env) |
1684 |
|
{ |
1685 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1686 |
|
|
1687 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
1688 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1689 |
env->err=1; |
env->err= 1; |
1690 |
return; |
return; |
1691 |
} |
} |
1692 |
|
|
1693 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type!=integer |
1694 |
|| env->head->next->item->type!=integer) { |
|| CAR(CDR(env->head))->type!=integer) { |
1695 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1696 |
env->err=2; |
env->err= 2; |
1697 |
return; |
return; |
1698 |
} |
} |
1699 |
|
|
1700 |
dur=env->head->item->content.val; |
dur= CAR(env->head)->content.i; |
1701 |
toss(env); |
toss(env); |
1702 |
freq=env->head->item->content.val; |
freq= CAR(env->head)->content.i; |
1703 |
toss(env); |
toss(env); |
1704 |
|
|
1705 |
period=1193180/freq; /* convert freq from Hz to period |
period= 1193180/freq; /* convert freq from Hz to period |
1706 |
length */ |
length */ |
1707 |
ticks=dur*.001193180; /* convert duration from µseconds to |
ticks= dur*.001193180; /* convert duration from µseconds to |
1708 |
timer ticks */ |
timer ticks */ |
1709 |
|
|
1710 |
/* ticks=dur/1000; */ |
/* ticks=dur/1000; */ |
1711 |
|
|
1712 |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
1713 |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
1714 |
case 0: |
case 0: |
1715 |
usleep(dur); |
usleep(dur); |
1716 |
return; |
return; |
1717 |
case -1: |
case -1: |
1718 |
perror("beep"); |
perror("beep"); |
1719 |
env->err=5; |
env->err= 5; |
1720 |
return; |
return; |
1721 |
default: |
default: |
1722 |
abort(); |
abort(); |
1723 |
} |
} |
1724 |
}; |
} |
1725 |
|
#endif /* __linux__ */ |
1726 |
|
|
1727 |
/* "wait" */ |
/* "wait" */ |
1728 |
extern void sx_77616974(environment *env) { |
extern void sx_77616974(environment *env) |
1729 |
|
{ |
1730 |
int dur; |
int dur; |
1731 |
|
|
1732 |
if((env->head)==NULL) { |
if(env->head==NULL) { |
1733 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1734 |
env->err=1; |
env->err= 1; |
1735 |
return; |
return; |
1736 |
} |
} |
1737 |
|
|
1738 |
if(env->head->item->type!=integer) { |
if(CAR(env->head)->type!=integer) { |
1739 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
1740 |
env->err=2; |
env->err= 2; |
1741 |
return; |
return; |
1742 |
} |
} |
1743 |
|
|
1744 |
dur=env->head->item->content.val; |
dur= CAR(env->head)->content.i; |
1745 |
toss(env); |
toss(env); |
1746 |
|
|
1747 |
usleep(dur); |
usleep(dur); |
1748 |
}; |
} |
1749 |
|
|
1750 |
extern void copying(environment *env){ |
extern void copying(environment *env) |
1751 |
|
{ |
1752 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
1753 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
1754 |
\n\ |
\n\ |
2007 |
of promoting the sharing and reuse of software generally.\n"); |
of promoting the sharing and reuse of software generally.\n"); |
2008 |
} |
} |
2009 |
|
|
2010 |
extern void warranty(environment *env){ |
extern void warranty(environment *env) |
2011 |
|
{ |
2012 |
printf(" NO WARRANTY\n\ |
printf(" NO WARRANTY\n\ |
2013 |
\n\ |
\n\ |
2014 |
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY\n\ |
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY\n\ |
2036 |
extern void sx_2a(environment *env) |
extern void sx_2a(environment *env) |
2037 |
{ |
{ |
2038 |
int a, b; |
int a, b; |
2039 |
|
float fa, fb; |
2040 |
|
|
2041 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2042 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2043 |
env->err=1; |
env->err= 1; |
2044 |
return; |
return; |
2045 |
} |
} |
2046 |
|
|
2047 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
2048 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2049 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
2050 |
env->err=2; |
toss(env); if(env->err) return; |
2051 |
|
b= CAR(env->head)->content.i; |
2052 |
|
toss(env); if(env->err) return; |
2053 |
|
push_int(env, b*a); |
2054 |
|
|
2055 |
return; |
return; |
2056 |
} |
} |
2057 |
|
|
2058 |
a=env->head->item->content.val; |
if(CAR(env->head)->type==tfloat |
2059 |
toss(env); if(env->err) return; |
&& CAR(CDR(env->head))->type==tfloat) { |
2060 |
b=env->head->item->content.val; |
fa= CAR(env->head)->content.f; |
2061 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2062 |
push_int(env, b*a); |
fb= CAR(env->head)->content.f; |
2063 |
|
toss(env); if(env->err) return; |
2064 |
|
push_float(env, fb*fa); |
2065 |
|
|
2066 |
|
return; |
2067 |
|
} |
2068 |
|
|
2069 |
|
if(CAR(env->head)->type==tfloat |
2070 |
|
&& CAR(CDR(env->head))->type==integer) { |
2071 |
|
fa= CAR(env->head)->content.f; |
2072 |
|
toss(env); if(env->err) return; |
2073 |
|
b= CAR(env->head)->content.i; |
2074 |
|
toss(env); if(env->err) return; |
2075 |
|
push_float(env, b*fa); |
2076 |
|
|
2077 |
|
return; |
2078 |
|
} |
2079 |
|
|
2080 |
|
if(CAR(env->head)->type==integer |
2081 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
2082 |
|
a= CAR(env->head)->content.i; |
2083 |
|
toss(env); if(env->err) return; |
2084 |
|
fb= CAR(env->head)->content.f; |
2085 |
|
toss(env); if(env->err) return; |
2086 |
|
push_float(env, fb*a); |
2087 |
|
|
2088 |
|
return; |
2089 |
|
} |
2090 |
|
|
2091 |
|
printerr("Bad Argument Type"); |
2092 |
|
env->err= 2; |
2093 |
} |
} |
2094 |
|
|
2095 |
/* "/" */ |
/* "/" */ |
2096 |
extern void sx_2f(environment *env) |
extern void sx_2f(environment *env) |
2097 |
{ |
{ |
2098 |
int a, b; |
int a, b; |
2099 |
|
float fa, fb; |
2100 |
|
|
2101 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2102 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2103 |
env->err=1; |
env->err= 1; |
2104 |
return; |
return; |
2105 |
} |
} |
2106 |
|
|
2107 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
2108 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2109 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
2110 |
env->err=2; |
toss(env); if(env->err) return; |
2111 |
|
b= CAR(env->head)->content.i; |
2112 |
|
toss(env); if(env->err) return; |
2113 |
|
push_float(env, b/a); |
2114 |
|
|
2115 |
return; |
return; |
2116 |
} |
} |
2117 |
|
|
2118 |
a=env->head->item->content.val; |
if(CAR(env->head)->type==tfloat |
2119 |
toss(env); if(env->err) return; |
&& CAR(CDR(env->head))->type==tfloat) { |
2120 |
b=env->head->item->content.val; |
fa= CAR(env->head)->content.f; |
2121 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
2122 |
push_int(env, b/a); |
fb= CAR(env->head)->content.f; |
2123 |
|
toss(env); if(env->err) return; |
2124 |
|
push_float(env, fb/fa); |
2125 |
|
|
2126 |
|
return; |
2127 |
|
} |
2128 |
|
|
2129 |
|
if(CAR(env->head)->type==tfloat |
2130 |
|
&& CAR(CDR(env->head))->type==integer) { |
2131 |
|
fa= CAR(env->head)->content.f; |
2132 |
|
toss(env); if(env->err) return; |
2133 |
|
b= CAR(env->head)->content.i; |
2134 |
|
toss(env); if(env->err) return; |
2135 |
|
push_float(env, b/fa); |
2136 |
|
|
2137 |
|
return; |
2138 |
|
} |
2139 |
|
|
2140 |
|
if(CAR(env->head)->type==integer |
2141 |
|
&& CAR(CDR(env->head))->type==tfloat) { |
2142 |
|
a= CAR(env->head)->content.i; |
2143 |
|
toss(env); if(env->err) return; |
2144 |
|
fb= CAR(env->head)->content.f; |
2145 |
|
toss(env); if(env->err) return; |
2146 |
|
push_float(env, fb/a); |
2147 |
|
|
2148 |
|
return; |
2149 |
|
} |
2150 |
|
|
2151 |
|
printerr("Bad Argument Type"); |
2152 |
|
env->err= 2; |
2153 |
} |
} |
2154 |
|
|
2155 |
/* "mod" */ |
/* "mod" */ |
2157 |
{ |
{ |
2158 |
int a, b; |
int a, b; |
2159 |
|
|
2160 |
if((env->head)==NULL || env->head->next==NULL) { |
if(env->head==NULL || CDR(env->head)==NULL) { |
2161 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2162 |
env->err=1; |
env->err= 1; |
2163 |
return; |
return; |
2164 |
} |
} |
2165 |
|
|
2166 |
if(env->head->item->type!=integer |
if(CAR(env->head)->type==integer |
2167 |
|| env->head->next->item->type!=integer) { |
&& CAR(CDR(env->head))->type==integer) { |
2168 |
printerr("Bad Argument Type"); |
a= CAR(env->head)->content.i; |
2169 |
env->err=2; |
toss(env); if(env->err) return; |
2170 |
|
b= CAR(env->head)->content.i; |
2171 |
|
toss(env); if(env->err) return; |
2172 |
|
push_int(env, b%a); |
2173 |
|
|
2174 |
return; |
return; |
2175 |
} |
} |
2176 |
|
|
2177 |
a=env->head->item->content.val; |
printerr("Bad Argument Type"); |
2178 |
toss(env); if(env->err) return; |
env->err= 2; |
2179 |
b=env->head->item->content.val; |
} |
2180 |
toss(env); if(env->err) return; |
|
2181 |
push_int(env, b%a); |
/* "div" */ |
2182 |
|
extern void sx_646976(environment *env) |
2183 |
|
{ |
2184 |
|
int a, b; |
2185 |
|
|
2186 |
|
if(env->head==NULL || CDR(env->head)==NULL) { |
2187 |
|
printerr("Too Few Arguments"); |
2188 |
|
env->err= 1; |
2189 |
|
return; |
2190 |
|
} |
2191 |
|
|
2192 |
|
if(CAR(env->head)->type==integer |
2193 |
|
&& CAR(CDR(env->head))->type==integer) { |
2194 |
|
a= CAR(env->head)->content.i; |
2195 |
|
toss(env); if(env->err) return; |
2196 |
|
b= CAR(env->head)->content.i; |
2197 |
|
toss(env); if(env->err) return; |
2198 |
|
push_int(env, (int)b/a); |
2199 |
|
|
2200 |
|
return; |
2201 |
|
} |
2202 |
|
|
2203 |
|
printerr("Bad Argument Type"); |
2204 |
|
env->err= 2; |
2205 |
} |
} |