48 |
{ |
{ |
49 |
int i; |
int i; |
50 |
|
|
51 |
env->gc_limit= 20; |
env->gc_limit= 200; |
52 |
env->gc_count= 0; |
env->gc_count= 0; |
53 |
env->gc_ref= NULL; |
env->gc_ref= NULL; |
|
env->gc_protect= NULL; |
|
54 |
|
|
55 |
env->head= NULL; |
env->head= NULL; |
56 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
62 |
env->interactive= 1; |
env->interactive= 1; |
63 |
} |
} |
64 |
|
|
65 |
void printerr(const char* in_string) { |
void printerr(const char* in_string) |
66 |
|
{ |
67 |
fprintf(stderr, "Err: %s\n", in_string); |
fprintf(stderr, "Err: %s\n", in_string); |
68 |
} |
} |
69 |
|
|
81 |
env->head= env->head->next; /* Remove the top stack item */ |
env->head= env->head->next; /* Remove the top stack item */ |
82 |
free(temp); /* Free the old top stack item */ |
free(temp); /* Free the old top stack item */ |
83 |
|
|
84 |
gc_init(env); |
env->gc_limit--; |
85 |
} |
} |
86 |
|
|
87 |
/* 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. */ |
113 |
} |
} |
114 |
} |
} |
115 |
|
|
116 |
value* new_val(environment *env) { |
/* Create new value */ |
117 |
|
value* new_val(environment *env) |
118 |
|
{ |
119 |
value *nval= malloc(sizeof(value)); |
value *nval= malloc(sizeof(value)); |
120 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
121 |
|
|
126 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
127 |
|
|
128 |
env->gc_count++; |
env->gc_count++; |
129 |
|
nval->gc.flag.mark= 0; |
130 |
protect(env, nval); |
nval->gc.flag.protect= 0; |
|
gc_init(env); |
|
|
unprotect(env); |
|
131 |
|
|
132 |
return nval; |
return nval; |
133 |
} |
} |
134 |
|
|
135 |
void gc_mark(value *val) { |
/* Mark values recursively. |
136 |
|
Marked values are not collected by the GC. */ |
137 |
|
inline void gc_mark(value *val) |
138 |
|
{ |
139 |
stackitem *iterator; |
stackitem *iterator; |
140 |
|
|
141 |
if(val==NULL || val->gc_garb==0) |
if(val->gc.flag.mark) |
142 |
return; |
return; |
143 |
|
|
144 |
val->gc_garb= 0; |
val->gc.flag.mark= 1; |
145 |
|
|
146 |
if(val->type==list) { |
if(val->type==list) { |
147 |
iterator= val->content.ptr; |
iterator= val->content.ptr; |
153 |
} |
} |
154 |
} |
} |
155 |
|
|
156 |
extern void gc_init(environment *env) { |
inline void gc_maybe(environment *env) |
157 |
stackitem *new_head= NULL, *titem, *iterator; |
{ |
|
symbol *tsymb; |
|
|
int i; |
|
|
|
|
158 |
if(env->gc_count < env->gc_limit) |
if(env->gc_count < env->gc_limit) |
159 |
return; |
return; |
160 |
|
else |
161 |
|
return gc_init(env); |
162 |
|
} |
163 |
|
|
164 |
/* Garb by default */ |
/* Start GC */ |
165 |
iterator= env->gc_ref; |
extern void gc_init(environment *env) |
166 |
while(iterator!=NULL) { |
{ |
167 |
iterator->item->gc_garb= 1; |
stackitem *new_head= NULL, *titem, *iterator; |
168 |
iterator= iterator->next; |
symbol *tsymb; |
169 |
} |
int i; |
|
|
|
|
/* Mark protected values */ |
|
|
iterator= env->gc_protect; |
|
|
while(iterator!=NULL) { |
|
|
gc_mark(iterator->item); |
|
|
iterator= iterator->next; |
|
|
} |
|
170 |
|
|
171 |
/* Mark values in stack */ |
/* Mark values on stack */ |
172 |
iterator= env->head; |
iterator= env->head; |
173 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
174 |
gc_mark(iterator->item); |
gc_mark(iterator->item); |
179 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) { |
180 |
tsymb= env->symbols[i]; |
tsymb= env->symbols[i]; |
181 |
while(tsymb!=NULL) { |
while(tsymb!=NULL) { |
182 |
gc_mark(tsymb->val); |
if (tsymb->val != NULL) |
183 |
|
gc_mark(tsymb->val); |
184 |
tsymb= tsymb->next; |
tsymb= tsymb->next; |
185 |
} |
} |
186 |
} |
} |
187 |
|
|
188 |
env->gc_count= 0; |
env->gc_count= 0; |
189 |
|
|
190 |
/* Sweep */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
|
while(env->gc_ref!=NULL) { |
|
191 |
|
|
192 |
if(env->gc_ref->item->gc_garb) { |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
193 |
|
|
194 |
/* Remove content */ |
switch(env->gc_ref->item->type) { /* Remove content */ |
|
switch(env->gc_ref->item->type) { |
|
195 |
case string: |
case string: |
196 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
197 |
break; |
break; |
201 |
env->gc_ref->item->content.ptr= titem->next; |
env->gc_ref->item->content.ptr= titem->next; |
202 |
free(titem); |
free(titem); |
203 |
} |
} |
|
break; |
|
204 |
default: |
default: |
|
break; |
|
205 |
} |
} |
206 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
207 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
208 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
209 |
env->gc_ref= titem; |
env->gc_ref= titem; |
210 |
} else { /* Save */ |
continue; |
|
titem= env->gc_ref->next; |
|
|
env->gc_ref->next= new_head; |
|
|
new_head= env->gc_ref; |
|
|
env->gc_ref= titem; |
|
|
env->gc_count++; |
|
211 |
} |
} |
212 |
|
|
213 |
|
/* Keep values */ |
214 |
|
titem= env->gc_ref->next; |
215 |
|
env->gc_ref->next= new_head; |
216 |
|
new_head= env->gc_ref; |
217 |
|
new_head->item->gc.flag.mark= 0; |
218 |
|
env->gc_ref= titem; |
219 |
|
env->gc_count++; |
220 |
} |
} |
221 |
|
|
222 |
env->gc_limit= env->gc_count*2; |
env->gc_limit= env->gc_count*2; |
223 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
224 |
} |
} |
225 |
|
|
226 |
void protect(environment *env, value *val) |
/* Protect values from GC */ |
227 |
|
void protect(value *val) |
228 |
{ |
{ |
229 |
stackitem *new_item= malloc(sizeof(stackitem)); |
stackitem *iterator; |
230 |
new_item->item= val; |
|
231 |
new_item->next= env->gc_protect; |
if(val->gc.flag.protect) |
232 |
env->gc_protect= new_item; |
return; |
233 |
|
|
234 |
|
val->gc.flag.protect= 1; |
235 |
|
|
236 |
|
if(val->type==list) { |
237 |
|
iterator= val->content.ptr; |
238 |
|
|
239 |
|
while(iterator!=NULL) { |
240 |
|
protect(iterator->item); |
241 |
|
iterator= iterator->next; |
242 |
|
} |
243 |
|
} |
244 |
} |
} |
245 |
|
|
246 |
void unprotect(environment *env) |
/* Unprotect values from GC */ |
247 |
|
void unprotect(value *val) |
248 |
{ |
{ |
249 |
stackitem *temp= env->gc_protect; |
stackitem *iterator; |
250 |
env->gc_protect= env->gc_protect->next; |
|
251 |
free(temp); |
if(!(val->gc.flag.protect)) |
252 |
|
return; |
253 |
|
|
254 |
|
val->gc.flag.protect= 0; |
255 |
|
|
256 |
|
if(val->type==list) { |
257 |
|
iterator= val->content.ptr; |
258 |
|
|
259 |
|
while(iterator!=NULL) { |
260 |
|
unprotect(iterator->item); |
261 |
|
iterator= iterator->next; |
262 |
|
} |
263 |
|
} |
264 |
} |
} |
265 |
|
|
266 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
272 |
env->head= new_item; |
env->head= new_item; |
273 |
} |
} |
274 |
|
|
275 |
/* Push an integer onto the stack. */ |
/* Push an integer onto the stack */ |
276 |
void push_int(environment *env, int in_val) |
void push_int(environment *env, int in_val) |
277 |
{ |
{ |
278 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
283 |
push_val(env, new_value); |
push_val(env, new_value); |
284 |
} |
} |
285 |
|
|
286 |
|
/* Push a floating point number onto the stack */ |
287 |
void push_float(environment *env, float in_val) |
void push_float(environment *env, float in_val) |
288 |
{ |
{ |
289 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
307 |
} |
} |
308 |
|
|
309 |
/* Mangle a symbol name to a valid C identifier name */ |
/* Mangle a symbol name to a valid C identifier name */ |
310 |
char *mangle_str(const char *old_string){ |
char *mangle_str(const char *old_string) |
311 |
|
{ |
312 |
char validchars[]= "0123456789abcdef"; |
char validchars[]= "0123456789abcdef"; |
313 |
char *new_string, *current; |
char *new_string, *current; |
314 |
|
|
326 |
return new_string; /* The caller must free() it */ |
return new_string; /* The caller must free() it */ |
327 |
} |
} |
328 |
|
|
329 |
extern void mangle(environment *env){ |
extern void mangle(environment *env) |
330 |
|
{ |
331 |
char *new_string; |
char *new_string; |
332 |
|
|
333 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
366 |
char *mangled; /* Mangled function name */ |
char *mangled; /* Mangled function name */ |
367 |
|
|
368 |
new_value= new_val(env); |
new_value= new_val(env); |
369 |
protect(env, new_value); |
protect(new_value); |
370 |
new_fvalue= new_val(env); |
new_fvalue= new_val(env); |
371 |
protect(env, new_fvalue); |
protect(new_fvalue); |
372 |
|
|
373 |
/* The new value is a symbol */ |
/* The new value is a symbol */ |
374 |
new_value->type= symb; |
new_value->type= symb; |
396 |
|
|
397 |
mangled= mangle_str(in_string); /* mangle the name */ |
mangled= mangle_str(in_string); /* mangle the name */ |
398 |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
399 |
free(mangled); |
|
400 |
dlerr= dlerror(); |
dlerr= dlerror(); |
401 |
if(dlerr != NULL) { /* If no function was found */ |
if(dlerr != NULL) { /* If no function was found */ |
402 |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
403 |
dlerr= dlerror(); |
dlerr= dlerror(); |
404 |
} |
} |
405 |
|
|
406 |
if(dlerr==NULL) { /* If a function was found */ |
if(dlerr==NULL) { /* If a function was found */ |
407 |
new_fvalue->type= func; /* The new value is a function pointer */ |
new_fvalue->type= func; /* The new value is a function pointer */ |
408 |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
409 |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
410 |
function value */ |
function value */ |
411 |
} |
} |
412 |
|
|
413 |
|
free(mangled); |
414 |
} |
} |
415 |
|
|
416 |
push_val(env, new_value); |
push_val(env, new_value); |
417 |
unprotect(env); unprotect(env); |
unprotect(new_value); unprotect(new_fvalue); |
418 |
} |
} |
419 |
|
|
420 |
/* Print newline. */ |
/* Print newline. */ |
424 |
} |
} |
425 |
|
|
426 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
427 |
extern void type(environment *env){ |
extern void type(environment *env) |
428 |
|
{ |
429 |
int typenum; |
int typenum; |
430 |
|
|
431 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
493 |
} |
} |
494 |
} |
} |
495 |
|
|
496 |
extern void print_(environment *env) { |
extern void print_(environment *env) |
497 |
|
{ |
498 |
if(env->head==NULL) { |
if(env->head==NULL) { |
499 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
500 |
env->err=1; |
env->err=1; |
512 |
toss(env); |
toss(env); |
513 |
} |
} |
514 |
|
|
515 |
extern void princ_(environment *env) { |
extern void princ_(environment *env) |
516 |
|
{ |
517 |
if(env->head==NULL) { |
if(env->head==NULL) { |
518 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
519 |
env->err=1; |
env->err=1; |
547 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
548 |
return; |
return; |
549 |
} |
} |
550 |
|
|
551 |
print_st(env->head, 1); |
print_st(env->head, 1); |
552 |
} |
} |
553 |
|
|
607 |
env->err=3; |
env->err=3; |
608 |
return; |
return; |
609 |
} |
} |
610 |
protect(env, val); |
protect(val); |
611 |
toss(env); /* toss the symbol */ |
toss(env); /* toss the symbol */ |
612 |
if(env->err) return; |
if(env->err) return; |
613 |
push_val(env, val); /* Return its bound value */ |
push_val(env, val); /* Return its bound value */ |
614 |
unprotect(env); |
unprotect(val); |
615 |
} |
} |
616 |
|
|
617 |
/* 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 |
625 |
|
|
626 |
eval_start: |
eval_start: |
627 |
|
|
628 |
|
gc_maybe(env); |
629 |
|
|
630 |
if(env->head==NULL) { |
if(env->head==NULL) { |
631 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
632 |
env->err=1; |
env->err=1; |
653 |
/* If it's a list */ |
/* If it's a list */ |
654 |
case list: |
case list: |
655 |
temp_val= env->head->item; |
temp_val= env->head->item; |
656 |
protect(env, temp_val); |
protect(temp_val); |
657 |
|
|
658 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
659 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= (stackitem*)temp_val->content.ptr; |
674 |
} |
} |
675 |
iterator= iterator->next; |
iterator= iterator->next; |
676 |
} |
} |
677 |
unprotect(env); |
unprotect(temp_val); |
678 |
return; |
return; |
679 |
|
|
680 |
default: |
default: |
683 |
} |
} |
684 |
|
|
685 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
686 |
extern void rev(environment *env){ |
extern void rev(environment *env) |
687 |
|
{ |
688 |
stackitem *old_head, *new_head, *item; |
stackitem *old_head, *new_head, *item; |
689 |
|
|
690 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
718 |
|
|
719 |
iterator= env->head; |
iterator= env->head; |
720 |
pack= new_val(env); |
pack= new_val(env); |
721 |
protect(env, pack); |
protect(pack); |
722 |
|
|
723 |
if(iterator==NULL |
if(iterator==NULL |
724 |
|| (iterator->item->type==symb |
|| (iterator->item->type==symb |
749 |
push_val(env, pack); |
push_val(env, pack); |
750 |
rev(env); |
rev(env); |
751 |
|
|
752 |
unprotect(env); |
unprotect(pack); |
753 |
} |
} |
754 |
|
|
755 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
870 |
/* Quit stack. */ |
/* Quit stack. */ |
871 |
extern void quit(environment *env) |
extern void quit(environment *env) |
872 |
{ |
{ |
873 |
long i; |
int i; |
874 |
|
|
875 |
clear(env); |
clear(env); |
876 |
|
|
883 |
} |
} |
884 |
|
|
885 |
env->gc_limit= 0; |
env->gc_limit= 0; |
886 |
gc_init(env); |
gc_maybe(env); |
887 |
|
|
888 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
889 |
free(env->free_string); |
free(env->free_string); |
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; |
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 |
|
|
1022 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
1023 |
eval(&myenv); |
eval(&myenv); |
1024 |
} |
} |
1025 |
gc_init(&myenv); |
gc_maybe(&myenv); |
1026 |
} |
} |
1027 |
quit(&myenv); |
quit(&myenv); |
1028 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
1029 |
} |
} |
1030 |
|
|
1031 |
/* "+" */ |
/* "+" */ |
1032 |
extern void sx_2b(environment *env) { |
extern void sx_2b(environment *env) |
1033 |
|
{ |
1034 |
int a, b; |
int a, b; |
1035 |
float fa, fb; |
float fa, fb; |
1036 |
size_t len; |
size_t len; |
1047 |
&& env->head->next->item->type==string) { |
&& env->head->next->item->type==string) { |
1048 |
a_val= env->head->item; |
a_val= env->head->item; |
1049 |
b_val= env->head->next->item; |
b_val= env->head->next->item; |
1050 |
protect(env, a_val); protect(env, b_val); |
protect(a_val); protect(b_val); |
1051 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1052 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1053 |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
1055 |
strcpy(new_string, b_val->content.ptr); |
strcpy(new_string, b_val->content.ptr); |
1056 |
strcat(new_string, a_val->content.ptr); |
strcat(new_string, a_val->content.ptr); |
1057 |
push_cstring(env, new_string); |
push_cstring(env, new_string); |
1058 |
unprotect(env); unprotect(env); |
unprotect(a_val); unprotect(b_val); |
1059 |
free(new_string); |
free(new_string); |
1060 |
|
|
1061 |
return; |
return; |
1110 |
} |
} |
1111 |
|
|
1112 |
/* "-" */ |
/* "-" */ |
1113 |
extern void sx_2d(environment *env) { |
extern void sx_2d(environment *env) |
1114 |
|
{ |
1115 |
int a, b; |
int a, b; |
1116 |
float fa, fb; |
float fa, fb; |
1117 |
|
|
1170 |
} |
} |
1171 |
|
|
1172 |
/* ">" */ |
/* ">" */ |
1173 |
extern void sx_3e(environment *env) { |
extern void sx_3e(environment *env) |
1174 |
|
{ |
1175 |
int a, b; |
int a, b; |
1176 |
float fa, fb; |
float fa, fb; |
1177 |
|
|
1230 |
} |
} |
1231 |
|
|
1232 |
/* "<" */ |
/* "<" */ |
1233 |
extern void sx_3c(environment *env) { |
extern void sx_3c(environment *env) |
1234 |
|
{ |
1235 |
swap(env); if(env->err) return; |
swap(env); if(env->err) return; |
1236 |
sx_3e(env); |
sx_3e(env); |
1237 |
} |
} |
1238 |
|
|
1239 |
/* "<=" */ |
/* "<=" */ |
1240 |
extern void sx_3c3d(environment *env) { |
extern void sx_3c3d(environment *env) |
1241 |
|
{ |
1242 |
sx_3e(env); if(env->err) return; |
sx_3e(env); if(env->err) return; |
1243 |
not(env); |
not(env); |
1244 |
} |
} |
1245 |
|
|
1246 |
/* ">=" */ |
/* ">=" */ |
1247 |
extern void sx_3e3d(environment *env) { |
extern void sx_3e3d(environment *env) |
1248 |
|
{ |
1249 |
sx_3c(env); if(env->err) return; |
sx_3c(env); if(env->err) return; |
1250 |
not(env); |
not(env); |
1251 |
} |
} |
1252 |
|
|
1253 |
/* Return copy of a value */ |
/* Return copy of a value */ |
1254 |
value *copy_val(environment *env, value *old_value){ |
value *copy_val(environment *env, value *old_value) |
1255 |
|
{ |
1256 |
stackitem *old_item, *new_item, *prev_item; |
stackitem *old_item, *new_item, *prev_item; |
1257 |
value *new_value; |
value *new_value; |
1258 |
|
|
1259 |
protect(env, old_value); |
protect(old_value); |
1260 |
new_value= new_val(env); |
new_value= new_val(env); |
1261 |
protect(env, new_value); |
protect(new_value); |
1262 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
1263 |
|
|
1264 |
switch(old_value->type){ |
switch(old_value->type){ |
1293 |
break; |
break; |
1294 |
} |
} |
1295 |
|
|
1296 |
unprotect(env); unprotect(env); |
unprotect(old_value); unprotect(new_value); |
1297 |
|
|
1298 |
return new_value; |
return new_value; |
1299 |
} |
} |
1300 |
|
|
1301 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
1302 |
extern void sx_647570(environment *env) { |
extern void sx_647570(environment *env) |
1303 |
|
{ |
1304 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
1305 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1306 |
env->err= 1; |
env->err= 1; |
1310 |
} |
} |
1311 |
|
|
1312 |
/* "if", If-Then */ |
/* "if", If-Then */ |
1313 |
extern void sx_6966(environment *env) { |
extern void sx_6966(environment *env) |
1314 |
|
{ |
1315 |
int truth; |
int truth; |
1316 |
|
|
1317 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
1341 |
} |
} |
1342 |
|
|
1343 |
/* If-Then-Else */ |
/* If-Then-Else */ |
1344 |
extern void ifelse(environment *env) { |
extern void ifelse(environment *env) |
1345 |
|
{ |
1346 |
int truth; |
int truth; |
1347 |
|
|
1348 |
if((env->head)==NULL || env->head->next==NULL |
if((env->head)==NULL || env->head->next==NULL |
1377 |
} |
} |
1378 |
|
|
1379 |
/* "while" */ |
/* "while" */ |
1380 |
extern void sx_7768696c65(environment *env) { |
extern void sx_7768696c65(environment *env) |
1381 |
|
{ |
1382 |
int truth; |
int truth; |
1383 |
value *loop, *test; |
value *loop, *test; |
1384 |
|
|
1389 |
} |
} |
1390 |
|
|
1391 |
loop= env->head->item; |
loop= env->head->item; |
1392 |
protect(env, loop); |
protect(loop); |
1393 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1394 |
|
|
1395 |
test= env->head->item; |
test= env->head->item; |
1396 |
protect(env, test); |
protect(test); |
1397 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1398 |
|
|
1399 |
do { |
do { |
1418 |
|
|
1419 |
} while(truth); |
} while(truth); |
1420 |
|
|
1421 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(test); |
1422 |
} |
} |
1423 |
|
|
1424 |
|
|
1425 |
/* "for"; for-loop */ |
/* "for"; for-loop */ |
1426 |
extern void sx_666f72(environment *env) { |
extern void sx_666f72(environment *env) |
1427 |
|
{ |
1428 |
value *loop; |
value *loop; |
1429 |
int foo1, foo2; |
int foo1, foo2; |
1430 |
|
|
1443 |
} |
} |
1444 |
|
|
1445 |
loop= env->head->item; |
loop= env->head->item; |
1446 |
protect(env, loop); |
protect(loop); |
1447 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1448 |
|
|
1449 |
foo2= env->head->item->content.i; |
foo2= env->head->item->content.i; |
1467 |
foo1--; |
foo1--; |
1468 |
} |
} |
1469 |
} |
} |
1470 |
unprotect(env); |
unprotect(loop); |
1471 |
} |
} |
1472 |
|
|
1473 |
/* Variant of for-loop */ |
/* Variant of for-loop */ |
1474 |
extern void foreach(environment *env) { |
extern void foreach(environment *env) |
1475 |
|
{ |
1476 |
value *loop, *foo; |
value *loop, *foo; |
1477 |
stackitem *iterator; |
stackitem *iterator; |
1478 |
|
|
1489 |
} |
} |
1490 |
|
|
1491 |
loop= env->head->item; |
loop= env->head->item; |
1492 |
protect(env, loop); |
protect(loop); |
1493 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1494 |
|
|
1495 |
foo= env->head->item; |
foo= env->head->item; |
1496 |
protect(env, foo); |
protect(foo); |
1497 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1498 |
|
|
1499 |
iterator= foo->content.ptr; |
iterator= foo->content.ptr; |
1504 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
1505 |
iterator= iterator->next; |
iterator= iterator->next; |
1506 |
} |
} |
1507 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(foo); |
1508 |
} |
} |
1509 |
|
|
1510 |
/* "to" */ |
/* "to" */ |
1511 |
extern void to(environment *env) { |
extern void to(environment *env) |
1512 |
int i, start, ending; |
{ |
1513 |
stackitem *temp_head; |
int ending, start, i; |
1514 |
value *temp_val; |
stackitem *iterator, *temp; |
1515 |
|
value *pack; |
1516 |
|
|
1517 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
1518 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1519 |
env->err=1; |
env->err=1; |
1532 |
start= env->head->item->content.i; |
start= env->head->item->content.i; |
1533 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1534 |
|
|
1535 |
temp_head= env->head; |
push_sym(env, "["); |
|
env->head= NULL; |
|
1536 |
|
|
1537 |
if(ending>=start) { |
if(ending>=start) { |
1538 |
for(i= ending; i>=start; i--) |
for(i= ending; i>=start; i--) |
1542 |
push_int(env, i); |
push_int(env, i); |
1543 |
} |
} |
1544 |
|
|
1545 |
temp_val= new_val(env); |
iterator= env->head; |
1546 |
protect(env, temp_val); |
pack= new_val(env); |
1547 |
|
protect(pack); |
1548 |
|
|
1549 |
|
if(iterator==NULL |
1550 |
|
|| (iterator->item->type==symb |
1551 |
|
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
1552 |
|
temp= NULL; |
1553 |
|
toss(env); |
1554 |
|
} else { |
1555 |
|
/* Search for first delimiter */ |
1556 |
|
while(iterator->next!=NULL |
1557 |
|
&& (iterator->next->item->type!=symb |
1558 |
|
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
1559 |
|
iterator= iterator->next; |
1560 |
|
|
1561 |
|
/* Extract list */ |
1562 |
|
temp= env->head; |
1563 |
|
env->head= iterator->next; |
1564 |
|
iterator->next= NULL; |
1565 |
|
|
1566 |
|
pack->type= list; |
1567 |
|
pack->content.ptr= temp; |
1568 |
|
|
1569 |
|
if(env->head!=NULL) |
1570 |
|
toss(env); |
1571 |
|
} |
1572 |
|
|
1573 |
|
/* Push list */ |
1574 |
|
|
1575 |
temp_val->content.ptr= env->head; |
push_val(env, pack); |
|
temp_val->type= list; |
|
|
env->head= temp_head; |
|
|
push_val(env, temp_val); |
|
1576 |
|
|
1577 |
unprotect(env); |
unprotect(pack); |
1578 |
} |
} |
1579 |
|
|
1580 |
/* Read a string */ |
/* Read a string */ |
1581 |
extern void readline(environment *env) { |
extern void readline(environment *env) |
1582 |
|
{ |
1583 |
char in_string[101]; |
char in_string[101]; |
1584 |
|
|
1585 |
if(fgets(in_string, 100, env->inputstream)==NULL) |
if(fgets(in_string, 100, env->inputstream)==NULL) |
1589 |
} |
} |
1590 |
|
|
1591 |
/* "read"; Read a value and place on stack */ |
/* "read"; Read a value and place on stack */ |
1592 |
extern void sx_72656164(environment *env) { |
extern void sx_72656164(environment *env) |
1593 |
|
{ |
1594 |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
1595 |
const char strform[]= "\"%[^\"]\"%n"; |
const char strform[]= "\"%[^\"]\"%n"; |
1596 |
const char intform[]= "%i%n"; |
const char intform[]= "%i%n"; |
1669 |
return sx_72656164(env); |
return sx_72656164(env); |
1670 |
} |
} |
1671 |
|
|
1672 |
extern void beep(environment *env) { |
extern void beep(environment *env) |
1673 |
|
{ |
1674 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
1675 |
|
|
1676 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
1710 |
default: |
default: |
1711 |
abort(); |
abort(); |
1712 |
} |
} |
1713 |
}; |
} |
1714 |
|
|
1715 |
/* "wait" */ |
/* "wait" */ |
1716 |
extern void sx_77616974(environment *env) { |
extern void sx_77616974(environment *env) |
1717 |
|
{ |
1718 |
int dur; |
int dur; |
1719 |
|
|
1720 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
1733 |
toss(env); |
toss(env); |
1734 |
|
|
1735 |
usleep(dur); |
usleep(dur); |
1736 |
}; |
} |
1737 |
|
|
1738 |
extern void copying(environment *env){ |
extern void copying(environment *env) |
1739 |
|
{ |
1740 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
1741 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
1742 |
\n\ |
\n\ |
1995 |
of promoting the sharing and reuse of software generally.\n"); |
of promoting the sharing and reuse of software generally.\n"); |
1996 |
} |
} |
1997 |
|
|
1998 |
extern void warranty(environment *env){ |
extern void warranty(environment *env) |
1999 |
|
{ |
2000 |
printf(" NO WARRANTY\n\ |
printf(" NO WARRANTY\n\ |
2001 |
\n\ |
\n\ |
2002 |
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\ |
2147 |
|
|
2148 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
2149 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
2150 |
env->err=1; |
env->err= 1; |
2151 |
return; |
return; |
2152 |
} |
} |
2153 |
|
|
2165 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
2166 |
env->err=2; |
env->err=2; |
2167 |
} |
} |
2168 |
|
|
2169 |
|
/* "div" */ |
2170 |
|
extern void sx_646976(environment *env) |
2171 |
|
{ |
2172 |
|
int a, b; |
2173 |
|
|
2174 |
|
if((env->head)==NULL || env->head->next==NULL) { |
2175 |
|
printerr("Too Few Arguments"); |
2176 |
|
env->err= 1; |
2177 |
|
return; |
2178 |
|
} |
2179 |
|
|
2180 |
|
if(env->head->item->type==integer |
2181 |
|
&& env->head->next->item->type==integer) { |
2182 |
|
a= env->head->item->content.i; |
2183 |
|
toss(env); if(env->err) return; |
2184 |
|
b= env->head->item->content.i; |
2185 |
|
toss(env); if(env->err) return; |
2186 |
|
push_int(env, (int)b/a); |
2187 |
|
|
2188 |
|
return; |
2189 |
|
} |
2190 |
|
|
2191 |
|
printerr("Bad Argument Type"); |
2192 |
|
env->err= 2; |
2193 |
|
} |