| 48 |
{ |
{ |
| 49 |
int i; |
int i; |
| 50 |
|
|
| 51 |
env->gc_limit= 20; |
env->gc_limit= 400000; |
| 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 |
|
|
| 80 |
|
|
| 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 */ |
|
|
|
|
gc_init(env); |
|
| 83 |
} |
} |
| 84 |
|
|
| 85 |
/* Returns a pointer to a pointer to an element in the hash table. */ |
/* Returns a pointer to a pointer to an element in the hash table. */ |
| 111 |
} |
} |
| 112 |
} |
} |
| 113 |
|
|
| 114 |
value* new_val(environment *env) { |
/* Create new value */ |
| 115 |
|
value* new_val(environment *env) |
| 116 |
|
{ |
| 117 |
value *nval= malloc(sizeof(value)); |
value *nval= malloc(sizeof(value)); |
| 118 |
stackitem *nitem= malloc(sizeof(stackitem)); |
stackitem *nitem= malloc(sizeof(stackitem)); |
| 119 |
|
|
| 123 |
nitem->next= env->gc_ref; |
nitem->next= env->gc_ref; |
| 124 |
env->gc_ref= nitem; |
env->gc_ref= nitem; |
| 125 |
|
|
| 126 |
env->gc_count++; |
env->gc_count += sizeof(value); |
| 127 |
|
nval->gc.flag.mark= 0; |
| 128 |
protect(env, nval); |
nval->gc.flag.protect= 0; |
|
gc_init(env); |
|
|
unprotect(env); |
|
| 129 |
|
|
| 130 |
return nval; |
return nval; |
| 131 |
} |
} |
| 132 |
|
|
| 133 |
void gc_mark(value *val) { |
/* Mark values recursively. |
| 134 |
|
Marked values are not collected by the GC. */ |
| 135 |
|
inline void gc_mark(value *val) |
| 136 |
|
{ |
| 137 |
stackitem *iterator; |
stackitem *iterator; |
| 138 |
|
|
| 139 |
if(val==NULL || val->gc_garb==0) |
if(val->gc.flag.mark) |
| 140 |
return; |
return; |
| 141 |
|
|
| 142 |
val->gc_garb= 0; |
val->gc.flag.mark= 1; |
| 143 |
|
|
| 144 |
if(val->type==list) { |
if(val->type==list) { |
| 145 |
iterator= val->content.ptr; |
iterator= val->content.ptr; |
| 151 |
} |
} |
| 152 |
} |
} |
| 153 |
|
|
| 154 |
extern void gc_init(environment *env) { |
inline void gc_maybe(environment *env) |
| 155 |
|
{ |
| 156 |
|
if(env->gc_count < env->gc_limit) |
| 157 |
|
return; |
| 158 |
|
else |
| 159 |
|
return gc_init(env); |
| 160 |
|
} |
| 161 |
|
|
| 162 |
|
/* Start GC */ |
| 163 |
|
extern void gc_init(environment *env) |
| 164 |
|
{ |
| 165 |
stackitem *new_head= NULL, *titem, *iterator; |
stackitem *new_head= NULL, *titem, *iterator; |
| 166 |
symbol *tsymb; |
symbol *tsymb; |
| 167 |
int i; |
int i; |
| 168 |
|
|
| 169 |
if(env->gc_count < env->gc_limit) |
if(env->interactive){ |
| 170 |
return; |
printf("Garbage collecting."); |
|
|
|
|
/* Garb by default */ |
|
|
iterator= env->gc_ref; |
|
|
while(iterator!=NULL) { |
|
|
iterator->item->gc_garb= 1; |
|
|
iterator= iterator->next; |
|
| 171 |
} |
} |
| 172 |
|
|
| 173 |
/* Mark protected values */ |
/* Mark values on stack */ |
| 174 |
iterator= env->gc_protect; |
iterator= env->head; |
| 175 |
while(iterator!=NULL) { |
while(iterator!=NULL) { |
| 176 |
gc_mark(iterator->item); |
gc_mark(iterator->item); |
| 177 |
iterator= iterator->next; |
iterator= iterator->next; |
| 178 |
} |
} |
| 179 |
|
|
| 180 |
/* Mark values in stack */ |
if(env->interactive){ |
| 181 |
iterator= env->head; |
printf("."); |
|
while(iterator!=NULL) { |
|
|
gc_mark(iterator->item); |
|
|
iterator= iterator->next; |
|
| 182 |
} |
} |
| 183 |
|
|
| 184 |
/* Mark values in hashtable */ |
/* Mark values in hashtable */ |
| 185 |
for(i= 0; i<HASHTBLSIZE; i++) { |
for(i= 0; i<HASHTBLSIZE; i++) { |
| 186 |
tsymb= env->symbols[i]; |
tsymb= env->symbols[i]; |
| 187 |
while(tsymb!=NULL) { |
while(tsymb!=NULL) { |
| 188 |
gc_mark(tsymb->val); |
if (tsymb->val != NULL) |
| 189 |
|
gc_mark(tsymb->val); |
| 190 |
tsymb= tsymb->next; |
tsymb= tsymb->next; |
| 191 |
} |
} |
| 192 |
} |
} |
| 193 |
|
|
| 194 |
|
if(env->interactive){ |
| 195 |
|
printf("."); |
| 196 |
|
} |
| 197 |
|
|
| 198 |
env->gc_count= 0; |
env->gc_count= 0; |
| 199 |
|
|
| 200 |
/* Sweep */ |
while(env->gc_ref!=NULL) { /* Sweep unused values */ |
|
while(env->gc_ref!=NULL) { |
|
| 201 |
|
|
| 202 |
if(env->gc_ref->item->gc_garb) { |
if(!(env->gc_ref->item->gc.no_gc)){ /* neither mark nor protect */ |
| 203 |
|
|
| 204 |
/* Remove content */ |
switch(env->gc_ref->item->type) { /* Remove content */ |
|
switch(env->gc_ref->item->type) { |
|
| 205 |
case string: |
case string: |
| 206 |
free(env->gc_ref->item->content.ptr); |
free(env->gc_ref->item->content.ptr); |
| 207 |
break; |
break; |
| 211 |
env->gc_ref->item->content.ptr= titem->next; |
env->gc_ref->item->content.ptr= titem->next; |
| 212 |
free(titem); |
free(titem); |
| 213 |
} |
} |
|
break; |
|
| 214 |
default: |
default: |
|
break; |
|
| 215 |
} |
} |
| 216 |
free(env->gc_ref->item); /* Remove from gc_ref */ |
free(env->gc_ref->item); /* Remove from gc_ref */ |
| 217 |
titem= env->gc_ref->next; |
titem= env->gc_ref->next; |
| 218 |
free(env->gc_ref); /* Remove value */ |
free(env->gc_ref); /* Remove value */ |
| 219 |
env->gc_ref= titem; |
env->gc_ref= titem; |
| 220 |
} else { /* Save */ |
continue; |
| 221 |
titem= env->gc_ref->next; |
} else { |
| 222 |
env->gc_ref->next= new_head; |
env->gc_count += sizeof(value); |
| 223 |
new_head= env->gc_ref; |
if(env->gc_ref->item->type == string) |
| 224 |
env->gc_ref= titem; |
env->gc_count += strlen(env->gc_ref->item->content.ptr); |
|
env->gc_count++; |
|
| 225 |
} |
} |
| 226 |
|
|
| 227 |
|
/* Keep values */ |
| 228 |
|
titem= env->gc_ref->next; |
| 229 |
|
env->gc_ref->next= new_head; |
| 230 |
|
new_head= env->gc_ref; |
| 231 |
|
new_head->item->gc.flag.mark= 0; |
| 232 |
|
env->gc_ref= titem; |
| 233 |
} |
} |
| 234 |
|
|
| 235 |
env->gc_limit= env->gc_count*2; |
if (env->gc_limit < env->gc_count*2) |
| 236 |
|
env->gc_limit= env->gc_count*2; |
| 237 |
|
|
| 238 |
env->gc_ref= new_head; |
env->gc_ref= new_head; |
| 239 |
|
|
| 240 |
|
if(env->interactive){ |
| 241 |
|
printf("done\n"); |
| 242 |
|
} |
| 243 |
|
|
| 244 |
} |
} |
| 245 |
|
|
| 246 |
void protect(environment *env, value *val) |
/* Protect values from GC */ |
| 247 |
|
void protect(value *val) |
| 248 |
{ |
{ |
| 249 |
stackitem *new_item= malloc(sizeof(stackitem)); |
stackitem *iterator; |
| 250 |
new_item->item= val; |
|
| 251 |
new_item->next= env->gc_protect; |
if(val->gc.flag.protect) |
| 252 |
env->gc_protect= new_item; |
return; |
| 253 |
|
|
| 254 |
|
val->gc.flag.protect= 1; |
| 255 |
|
|
| 256 |
|
if(val->type==list) { |
| 257 |
|
iterator= val->content.ptr; |
| 258 |
|
|
| 259 |
|
while(iterator!=NULL) { |
| 260 |
|
protect(iterator->item); |
| 261 |
|
iterator= iterator->next; |
| 262 |
|
} |
| 263 |
|
} |
| 264 |
} |
} |
| 265 |
|
|
| 266 |
void unprotect(environment *env) |
/* Unprotect values from GC */ |
| 267 |
|
void unprotect(value *val) |
| 268 |
{ |
{ |
| 269 |
stackitem *temp= env->gc_protect; |
stackitem *iterator; |
| 270 |
env->gc_protect= env->gc_protect->next; |
|
| 271 |
free(temp); |
if(!(val->gc.flag.protect)) |
| 272 |
|
return; |
| 273 |
|
|
| 274 |
|
val->gc.flag.protect= 0; |
| 275 |
|
|
| 276 |
|
if(val->type==list) { |
| 277 |
|
iterator= val->content.ptr; |
| 278 |
|
|
| 279 |
|
while(iterator!=NULL) { |
| 280 |
|
unprotect(iterator->item); |
| 281 |
|
iterator= iterator->next; |
| 282 |
|
} |
| 283 |
|
} |
| 284 |
} |
} |
| 285 |
|
|
| 286 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
| 292 |
env->head= new_item; |
env->head= new_item; |
| 293 |
} |
} |
| 294 |
|
|
| 295 |
/* Push an integer onto the stack. */ |
/* Push an integer onto the stack */ |
| 296 |
void push_int(environment *env, int in_val) |
void push_int(environment *env, int in_val) |
| 297 |
{ |
{ |
| 298 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
| 303 |
push_val(env, new_value); |
push_val(env, new_value); |
| 304 |
} |
} |
| 305 |
|
|
| 306 |
|
/* Push a floating point number onto the stack */ |
| 307 |
void push_float(environment *env, float in_val) |
void push_float(environment *env, float in_val) |
| 308 |
{ |
{ |
| 309 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
| 318 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
| 319 |
{ |
{ |
| 320 |
value *new_value= new_val(env); |
value *new_value= new_val(env); |
| 321 |
|
int length= strlen(in_string)+1; |
| 322 |
|
|
| 323 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(length); |
| 324 |
|
env->gc_count += length; |
| 325 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
| 326 |
new_value->type= string; |
new_value->type= string; |
| 327 |
|
|
| 329 |
} |
} |
| 330 |
|
|
| 331 |
/* Mangle a symbol name to a valid C identifier name */ |
/* Mangle a symbol name to a valid C identifier name */ |
| 332 |
char *mangle_str(const char *old_string){ |
char *mangle_str(const char *old_string) |
| 333 |
|
{ |
| 334 |
char validchars[]= "0123456789abcdef"; |
char validchars[]= "0123456789abcdef"; |
| 335 |
char *new_string, *current; |
char *new_string, *current; |
| 336 |
|
|
| 348 |
return new_string; /* The caller must free() it */ |
return new_string; /* The caller must free() it */ |
| 349 |
} |
} |
| 350 |
|
|
| 351 |
extern void mangle(environment *env){ |
extern void mangle(environment *env) |
| 352 |
|
{ |
| 353 |
char *new_string; |
char *new_string; |
| 354 |
|
|
| 355 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
| 388 |
char *mangled; /* Mangled function name */ |
char *mangled; /* Mangled function name */ |
| 389 |
|
|
| 390 |
new_value= new_val(env); |
new_value= new_val(env); |
| 391 |
protect(env, new_value); |
protect(new_value); |
| 392 |
new_fvalue= new_val(env); |
new_fvalue= new_val(env); |
| 393 |
protect(env, new_fvalue); |
protect(new_fvalue); |
| 394 |
|
|
| 395 |
/* The new value is a symbol */ |
/* The new value is a symbol */ |
| 396 |
new_value->type= symb; |
new_value->type= symb; |
| 418 |
|
|
| 419 |
mangled= mangle_str(in_string); /* mangle the name */ |
mangled= mangle_str(in_string); /* mangle the name */ |
| 420 |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
funcptr= dlsym(handle, mangled); /* and try to find it */ |
| 421 |
free(mangled); |
|
| 422 |
dlerr= dlerror(); |
dlerr= dlerror(); |
| 423 |
if(dlerr != NULL) { /* If no function was found */ |
if(dlerr != NULL) { /* If no function was found */ |
| 424 |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
funcptr= dlsym(handle, in_string); /* Get function pointer */ |
| 425 |
dlerr= dlerror(); |
dlerr= dlerror(); |
| 426 |
} |
} |
| 427 |
|
|
| 428 |
if(dlerr==NULL) { /* If a function was found */ |
if(dlerr==NULL) { /* If a function was found */ |
| 429 |
new_fvalue->type= func; /* The new value is a function pointer */ |
new_fvalue->type= func; /* The new value is a function pointer */ |
| 430 |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
new_fvalue->content.ptr= funcptr; /* Store function pointer */ |
| 431 |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
(*new_symbol)->val= new_fvalue; /* Bind the symbol to the new |
| 432 |
function value */ |
function value */ |
| 433 |
} |
} |
| 434 |
|
|
| 435 |
|
free(mangled); |
| 436 |
} |
} |
| 437 |
|
|
| 438 |
push_val(env, new_value); |
push_val(env, new_value); |
| 439 |
unprotect(env); unprotect(env); |
unprotect(new_value); unprotect(new_fvalue); |
| 440 |
} |
} |
| 441 |
|
|
| 442 |
/* Print newline. */ |
/* Print newline. */ |
| 446 |
} |
} |
| 447 |
|
|
| 448 |
/* Gets the type of a value */ |
/* Gets the type of a value */ |
| 449 |
extern void type(environment *env){ |
extern void type(environment *env) |
| 450 |
|
{ |
| 451 |
int typenum; |
int typenum; |
| 452 |
|
|
| 453 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
| 515 |
} |
} |
| 516 |
} |
} |
| 517 |
|
|
| 518 |
extern void print_(environment *env) { |
extern void print_(environment *env) |
| 519 |
|
{ |
| 520 |
if(env->head==NULL) { |
if(env->head==NULL) { |
| 521 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 522 |
env->err=1; |
env->err=1; |
| 534 |
toss(env); |
toss(env); |
| 535 |
} |
} |
| 536 |
|
|
| 537 |
extern void princ_(environment *env) { |
extern void princ_(environment *env) |
| 538 |
|
{ |
| 539 |
if(env->head==NULL) { |
if(env->head==NULL) { |
| 540 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 541 |
env->err=1; |
env->err=1; |
| 569 |
printf("Stack Empty\n"); |
printf("Stack Empty\n"); |
| 570 |
return; |
return; |
| 571 |
} |
} |
| 572 |
|
|
| 573 |
print_st(env->head, 1); |
print_st(env->head, 1); |
| 574 |
} |
} |
| 575 |
|
|
| 629 |
env->err=3; |
env->err=3; |
| 630 |
return; |
return; |
| 631 |
} |
} |
| 632 |
protect(env, val); |
protect(val); |
| 633 |
toss(env); /* toss the symbol */ |
toss(env); /* toss the symbol */ |
| 634 |
if(env->err) return; |
if(env->err) return; |
| 635 |
push_val(env, val); /* Return its bound value */ |
push_val(env, val); /* Return its bound value */ |
| 636 |
unprotect(env); |
unprotect(val); |
| 637 |
} |
} |
| 638 |
|
|
| 639 |
/* 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 |
| 647 |
|
|
| 648 |
eval_start: |
eval_start: |
| 649 |
|
|
| 650 |
|
gc_maybe(env); |
| 651 |
|
|
| 652 |
if(env->head==NULL) { |
if(env->head==NULL) { |
| 653 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 654 |
env->err=1; |
env->err=1; |
| 675 |
/* If it's a list */ |
/* If it's a list */ |
| 676 |
case list: |
case list: |
| 677 |
temp_val= env->head->item; |
temp_val= env->head->item; |
| 678 |
protect(env, temp_val); |
protect(temp_val); |
| 679 |
|
|
| 680 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 681 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= (stackitem*)temp_val->content.ptr; |
| 684 |
push_val(env, iterator->item); |
push_val(env, iterator->item); |
| 685 |
|
|
| 686 |
if(env->head->item->type==symb |
if(env->head->item->type==symb |
| 687 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& (((symbol*)(env->head->item->content.ptr))->id[0] == ';')) { |
| 688 |
toss(env); |
toss(env); |
| 689 |
if(env->err) return; |
if(env->err) return; |
| 690 |
|
|
| 696 |
} |
} |
| 697 |
iterator= iterator->next; |
iterator= iterator->next; |
| 698 |
} |
} |
| 699 |
unprotect(env); |
unprotect(temp_val); |
| 700 |
return; |
return; |
| 701 |
|
|
| 702 |
default: |
default: |
| 705 |
} |
} |
| 706 |
|
|
| 707 |
/* Reverse (flip) a list */ |
/* Reverse (flip) a list */ |
| 708 |
extern void rev(environment *env){ |
extern void rev(environment *env) |
| 709 |
|
{ |
| 710 |
stackitem *old_head, *new_head, *item; |
stackitem *old_head, *new_head, *item; |
| 711 |
|
|
| 712 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
| 740 |
|
|
| 741 |
iterator= env->head; |
iterator= env->head; |
| 742 |
pack= new_val(env); |
pack= new_val(env); |
| 743 |
protect(env, pack); |
protect(pack); |
| 744 |
|
|
| 745 |
if(iterator==NULL |
if(iterator==NULL |
| 746 |
|| (iterator->item->type==symb |
|| (iterator->item->type==symb |
| 771 |
push_val(env, pack); |
push_val(env, pack); |
| 772 |
rev(env); |
rev(env); |
| 773 |
|
|
| 774 |
unprotect(env); |
unprotect(pack); |
| 775 |
} |
} |
| 776 |
|
|
| 777 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
| 892 |
/* Quit stack. */ |
/* Quit stack. */ |
| 893 |
extern void quit(environment *env) |
extern void quit(environment *env) |
| 894 |
{ |
{ |
| 895 |
long i; |
int i; |
| 896 |
|
|
| 897 |
clear(env); |
clear(env); |
| 898 |
|
|
| 905 |
} |
} |
| 906 |
|
|
| 907 |
env->gc_limit= 0; |
env->gc_limit= 0; |
| 908 |
gc_init(env); |
gc_maybe(env); |
| 909 |
|
|
| 910 |
if(env->free_string!=NULL) |
if(env->free_string!=NULL) |
| 911 |
free(env->free_string); |
free(env->free_string); |
| 938 |
} |
} |
| 939 |
|
|
| 940 |
/* Internal forget function */ |
/* Internal forget function */ |
| 941 |
void forget_sym(symbol **hash_entry) { |
void forget_sym(symbol **hash_entry) |
| 942 |
|
{ |
| 943 |
symbol *temp; |
symbol *temp; |
| 944 |
|
|
| 945 |
temp= *hash_entry; |
temp= *hash_entry; |
| 974 |
} |
} |
| 975 |
|
|
| 976 |
/* Returns the current error number to the stack */ |
/* Returns the current error number to the stack */ |
| 977 |
extern void errn(environment *env){ |
extern void errn(environment *env) |
| 978 |
|
{ |
| 979 |
push_int(env, env->err); |
push_int(env, env->err); |
| 980 |
} |
} |
| 981 |
|
|
| 1044 |
toss(&myenv); /* No error check in main */ |
toss(&myenv); /* No error check in main */ |
| 1045 |
eval(&myenv); |
eval(&myenv); |
| 1046 |
} |
} |
| 1047 |
gc_init(&myenv); |
gc_maybe(&myenv); |
| 1048 |
} |
} |
| 1049 |
quit(&myenv); |
quit(&myenv); |
| 1050 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
| 1051 |
} |
} |
| 1052 |
|
|
| 1053 |
/* "+" */ |
/* "+" */ |
| 1054 |
extern void sx_2b(environment *env) { |
extern void sx_2b(environment *env) |
| 1055 |
|
{ |
| 1056 |
int a, b; |
int a, b; |
| 1057 |
float fa, fb; |
float fa, fb; |
| 1058 |
size_t len; |
size_t len; |
| 1069 |
&& env->head->next->item->type==string) { |
&& env->head->next->item->type==string) { |
| 1070 |
a_val= env->head->item; |
a_val= env->head->item; |
| 1071 |
b_val= env->head->next->item; |
b_val= env->head->next->item; |
| 1072 |
protect(env, a_val); protect(env, b_val); |
protect(a_val); protect(b_val); |
| 1073 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1074 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1075 |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
| 1077 |
strcpy(new_string, b_val->content.ptr); |
strcpy(new_string, b_val->content.ptr); |
| 1078 |
strcat(new_string, a_val->content.ptr); |
strcat(new_string, a_val->content.ptr); |
| 1079 |
push_cstring(env, new_string); |
push_cstring(env, new_string); |
| 1080 |
unprotect(env); unprotect(env); |
unprotect(a_val); unprotect(b_val); |
| 1081 |
free(new_string); |
free(new_string); |
| 1082 |
|
|
| 1083 |
return; |
return; |
| 1132 |
} |
} |
| 1133 |
|
|
| 1134 |
/* "-" */ |
/* "-" */ |
| 1135 |
extern void sx_2d(environment *env) { |
extern void sx_2d(environment *env) |
| 1136 |
|
{ |
| 1137 |
int a, b; |
int a, b; |
| 1138 |
float fa, fb; |
float fa, fb; |
| 1139 |
|
|
| 1192 |
} |
} |
| 1193 |
|
|
| 1194 |
/* ">" */ |
/* ">" */ |
| 1195 |
extern void sx_3e(environment *env) { |
extern void sx_3e(environment *env) |
| 1196 |
|
{ |
| 1197 |
int a, b; |
int a, b; |
| 1198 |
float fa, fb; |
float fa, fb; |
| 1199 |
|
|
| 1252 |
} |
} |
| 1253 |
|
|
| 1254 |
/* "<" */ |
/* "<" */ |
| 1255 |
extern void sx_3c(environment *env) { |
extern void sx_3c(environment *env) |
| 1256 |
|
{ |
| 1257 |
swap(env); if(env->err) return; |
swap(env); if(env->err) return; |
| 1258 |
sx_3e(env); |
sx_3e(env); |
| 1259 |
} |
} |
| 1260 |
|
|
| 1261 |
/* "<=" */ |
/* "<=" */ |
| 1262 |
extern void sx_3c3d(environment *env) { |
extern void sx_3c3d(environment *env) |
| 1263 |
|
{ |
| 1264 |
sx_3e(env); if(env->err) return; |
sx_3e(env); if(env->err) return; |
| 1265 |
not(env); |
not(env); |
| 1266 |
} |
} |
| 1267 |
|
|
| 1268 |
/* ">=" */ |
/* ">=" */ |
| 1269 |
extern void sx_3e3d(environment *env) { |
extern void sx_3e3d(environment *env) |
| 1270 |
|
{ |
| 1271 |
sx_3c(env); if(env->err) return; |
sx_3c(env); if(env->err) return; |
| 1272 |
not(env); |
not(env); |
| 1273 |
} |
} |
| 1274 |
|
|
| 1275 |
/* Return copy of a value */ |
/* Return copy of a value */ |
| 1276 |
value *copy_val(environment *env, value *old_value){ |
value *copy_val(environment *env, value *old_value) |
| 1277 |
|
{ |
| 1278 |
stackitem *old_item, *new_item, *prev_item; |
stackitem *old_item, *new_item, *prev_item; |
| 1279 |
value *new_value; |
value *new_value; |
| 1280 |
|
|
| 1281 |
protect(env, old_value); |
protect(old_value); |
| 1282 |
new_value= new_val(env); |
new_value= new_val(env); |
| 1283 |
protect(env, new_value); |
protect(new_value); |
| 1284 |
new_value->type= old_value->type; |
new_value->type= old_value->type; |
| 1285 |
|
|
| 1286 |
switch(old_value->type){ |
switch(old_value->type){ |
| 1315 |
break; |
break; |
| 1316 |
} |
} |
| 1317 |
|
|
| 1318 |
unprotect(env); unprotect(env); |
unprotect(old_value); unprotect(new_value); |
| 1319 |
|
|
| 1320 |
return new_value; |
return new_value; |
| 1321 |
} |
} |
| 1322 |
|
|
| 1323 |
/* "dup"; duplicates an item on the stack */ |
/* "dup"; duplicates an item on the stack */ |
| 1324 |
extern void sx_647570(environment *env) { |
extern void sx_647570(environment *env) |
| 1325 |
|
{ |
| 1326 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
| 1327 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 1328 |
env->err= 1; |
env->err= 1; |
| 1332 |
} |
} |
| 1333 |
|
|
| 1334 |
/* "if", If-Then */ |
/* "if", If-Then */ |
| 1335 |
extern void sx_6966(environment *env) { |
extern void sx_6966(environment *env) |
| 1336 |
|
{ |
| 1337 |
int truth; |
int truth; |
| 1338 |
|
|
| 1339 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
| 1363 |
} |
} |
| 1364 |
|
|
| 1365 |
/* If-Then-Else */ |
/* If-Then-Else */ |
| 1366 |
extern void ifelse(environment *env) { |
extern void ifelse(environment *env) |
| 1367 |
|
{ |
| 1368 |
int truth; |
int truth; |
| 1369 |
|
|
| 1370 |
if((env->head)==NULL || env->head->next==NULL |
if((env->head)==NULL || env->head->next==NULL |
| 1399 |
} |
} |
| 1400 |
|
|
| 1401 |
/* "while" */ |
/* "while" */ |
| 1402 |
extern void sx_7768696c65(environment *env) { |
extern void sx_7768696c65(environment *env) |
| 1403 |
|
{ |
| 1404 |
int truth; |
int truth; |
| 1405 |
value *loop, *test; |
value *loop, *test; |
| 1406 |
|
|
| 1411 |
} |
} |
| 1412 |
|
|
| 1413 |
loop= env->head->item; |
loop= env->head->item; |
| 1414 |
protect(env, loop); |
protect(loop); |
| 1415 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1416 |
|
|
| 1417 |
test= env->head->item; |
test= env->head->item; |
| 1418 |
protect(env, test); |
protect(test); |
| 1419 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1420 |
|
|
| 1421 |
do { |
do { |
| 1440 |
|
|
| 1441 |
} while(truth); |
} while(truth); |
| 1442 |
|
|
| 1443 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(test); |
| 1444 |
} |
} |
| 1445 |
|
|
| 1446 |
|
|
| 1447 |
/* "for"; for-loop */ |
/* "for"; for-loop */ |
| 1448 |
extern void sx_666f72(environment *env) { |
extern void sx_666f72(environment *env) |
| 1449 |
|
{ |
| 1450 |
value *loop; |
value *loop; |
| 1451 |
int foo1, foo2; |
int foo1, foo2; |
| 1452 |
|
|
| 1465 |
} |
} |
| 1466 |
|
|
| 1467 |
loop= env->head->item; |
loop= env->head->item; |
| 1468 |
protect(env, loop); |
protect(loop); |
| 1469 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1470 |
|
|
| 1471 |
foo2= env->head->item->content.i; |
foo2= env->head->item->content.i; |
| 1489 |
foo1--; |
foo1--; |
| 1490 |
} |
} |
| 1491 |
} |
} |
| 1492 |
unprotect(env); |
unprotect(loop); |
| 1493 |
} |
} |
| 1494 |
|
|
| 1495 |
/* Variant of for-loop */ |
/* Variant of for-loop */ |
| 1496 |
extern void foreach(environment *env) { |
extern void foreach(environment *env) |
| 1497 |
|
{ |
| 1498 |
value *loop, *foo; |
value *loop, *foo; |
| 1499 |
stackitem *iterator; |
stackitem *iterator; |
| 1500 |
|
|
| 1511 |
} |
} |
| 1512 |
|
|
| 1513 |
loop= env->head->item; |
loop= env->head->item; |
| 1514 |
protect(env, loop); |
protect(loop); |
| 1515 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1516 |
|
|
| 1517 |
foo= env->head->item; |
foo= env->head->item; |
| 1518 |
protect(env, foo); |
protect(foo); |
| 1519 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1520 |
|
|
| 1521 |
iterator= foo->content.ptr; |
iterator= foo->content.ptr; |
| 1526 |
eval(env); if(env->err) return; |
eval(env); if(env->err) return; |
| 1527 |
iterator= iterator->next; |
iterator= iterator->next; |
| 1528 |
} |
} |
| 1529 |
unprotect(env); unprotect(env); |
unprotect(loop); unprotect(foo); |
| 1530 |
} |
} |
| 1531 |
|
|
| 1532 |
/* "to" */ |
/* "to" */ |
| 1533 |
extern void to(environment *env) { |
extern void to(environment *env) |
| 1534 |
int i, start, ending; |
{ |
| 1535 |
stackitem *temp_head; |
int ending, start, i; |
| 1536 |
value *temp_val; |
stackitem *iterator, *temp; |
| 1537 |
|
value *pack; |
| 1538 |
|
|
| 1539 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
| 1540 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 1541 |
env->err=1; |
env->err=1; |
| 1554 |
start= env->head->item->content.i; |
start= env->head->item->content.i; |
| 1555 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
| 1556 |
|
|
| 1557 |
temp_head= env->head; |
push_sym(env, "["); |
|
env->head= NULL; |
|
| 1558 |
|
|
| 1559 |
if(ending>=start) { |
if(ending>=start) { |
| 1560 |
for(i= ending; i>=start; i--) |
for(i= ending; i>=start; i--) |
| 1564 |
push_int(env, i); |
push_int(env, i); |
| 1565 |
} |
} |
| 1566 |
|
|
| 1567 |
temp_val= new_val(env); |
iterator= env->head; |
| 1568 |
protect(env, temp_val); |
pack= new_val(env); |
| 1569 |
|
protect(pack); |
| 1570 |
|
|
| 1571 |
temp_val->content.ptr= env->head; |
if(iterator==NULL |
| 1572 |
temp_val->type= list; |
|| (iterator->item->type==symb |
| 1573 |
env->head= temp_head; |
&& ((symbol*)(iterator->item->content.ptr))->id[0]=='[')) { |
| 1574 |
push_val(env, temp_val); |
temp= NULL; |
| 1575 |
|
toss(env); |
| 1576 |
|
} else { |
| 1577 |
|
/* Search for first delimiter */ |
| 1578 |
|
while(iterator->next!=NULL |
| 1579 |
|
&& (iterator->next->item->type!=symb |
| 1580 |
|
|| ((symbol*)(iterator->next->item->content.ptr))->id[0]!='[')) |
| 1581 |
|
iterator= iterator->next; |
| 1582 |
|
|
| 1583 |
|
/* Extract list */ |
| 1584 |
|
temp= env->head; |
| 1585 |
|
env->head= iterator->next; |
| 1586 |
|
iterator->next= NULL; |
| 1587 |
|
|
| 1588 |
unprotect(env); |
pack->type= list; |
| 1589 |
|
pack->content.ptr= temp; |
| 1590 |
|
|
| 1591 |
|
if(env->head!=NULL) |
| 1592 |
|
toss(env); |
| 1593 |
|
} |
| 1594 |
|
|
| 1595 |
|
/* Push list */ |
| 1596 |
|
|
| 1597 |
|
push_val(env, pack); |
| 1598 |
|
|
| 1599 |
|
unprotect(pack); |
| 1600 |
} |
} |
| 1601 |
|
|
| 1602 |
/* Read a string */ |
/* Read a string */ |
| 1603 |
extern void readline(environment *env) { |
extern void readline(environment *env) |
| 1604 |
|
{ |
| 1605 |
char in_string[101]; |
char in_string[101]; |
| 1606 |
|
|
| 1607 |
if(fgets(in_string, 100, env->inputstream)==NULL) |
if(fgets(in_string, 100, env->inputstream)==NULL) |
| 1611 |
} |
} |
| 1612 |
|
|
| 1613 |
/* "read"; Read a value and place on stack */ |
/* "read"; Read a value and place on stack */ |
| 1614 |
extern void sx_72656164(environment *env) { |
extern void sx_72656164(environment *env) |
| 1615 |
|
{ |
| 1616 |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%n"; |
| 1617 |
const char strform[]= "\"%[^\"]\"%n"; |
const char strform[]= "\"%[^\"]\"%n"; |
| 1618 |
const char intform[]= "%i%n"; |
const char intform[]= "%i%n"; |
| 1691 |
return sx_72656164(env); |
return sx_72656164(env); |
| 1692 |
} |
} |
| 1693 |
|
|
| 1694 |
extern void beep(environment *env) { |
extern void beep(environment *env) |
| 1695 |
|
{ |
| 1696 |
int freq, dur, period, ticks; |
int freq, dur, period, ticks; |
| 1697 |
|
|
| 1698 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
| 1732 |
default: |
default: |
| 1733 |
abort(); |
abort(); |
| 1734 |
} |
} |
| 1735 |
}; |
} |
| 1736 |
|
|
| 1737 |
/* "wait" */ |
/* "wait" */ |
| 1738 |
extern void sx_77616974(environment *env) { |
extern void sx_77616974(environment *env) |
| 1739 |
|
{ |
| 1740 |
int dur; |
int dur; |
| 1741 |
|
|
| 1742 |
if((env->head)==NULL) { |
if((env->head)==NULL) { |
| 1755 |
toss(env); |
toss(env); |
| 1756 |
|
|
| 1757 |
usleep(dur); |
usleep(dur); |
| 1758 |
}; |
} |
| 1759 |
|
|
| 1760 |
extern void copying(environment *env){ |
extern void copying(environment *env) |
| 1761 |
|
{ |
| 1762 |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
printf("GNU GENERAL PUBLIC LICENSE\n\ |
| 1763 |
Version 2, June 1991\n\ |
Version 2, June 1991\n\ |
| 1764 |
\n\ |
\n\ |
| 2017 |
of promoting the sharing and reuse of software generally.\n"); |
of promoting the sharing and reuse of software generally.\n"); |
| 2018 |
} |
} |
| 2019 |
|
|
| 2020 |
extern void warranty(environment *env){ |
extern void warranty(environment *env) |
| 2021 |
|
{ |
| 2022 |
printf(" NO WARRANTY\n\ |
printf(" NO WARRANTY\n\ |
| 2023 |
\n\ |
\n\ |
| 2024 |
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\ |
| 2169 |
|
|
| 2170 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
| 2171 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
| 2172 |
env->err=1; |
env->err= 1; |
| 2173 |
return; |
return; |
| 2174 |
} |
} |
| 2175 |
|
|
| 2187 |
printerr("Bad Argument Type"); |
printerr("Bad Argument Type"); |
| 2188 |
env->err=2; |
env->err=2; |
| 2189 |
} |
} |
| 2190 |
|
|
| 2191 |
|
/* "div" */ |
| 2192 |
|
extern void sx_646976(environment *env) |
| 2193 |
|
{ |
| 2194 |
|
int a, b; |
| 2195 |
|
|
| 2196 |
|
if((env->head)==NULL || env->head->next==NULL) { |
| 2197 |
|
printerr("Too Few Arguments"); |
| 2198 |
|
env->err= 1; |
| 2199 |
|
return; |
| 2200 |
|
} |
| 2201 |
|
|
| 2202 |
|
if(env->head->item->type==integer |
| 2203 |
|
&& env->head->next->item->type==integer) { |
| 2204 |
|
a= env->head->item->content.i; |
| 2205 |
|
toss(env); if(env->err) return; |
| 2206 |
|
b= env->head->item->content.i; |
| 2207 |
|
toss(env); if(env->err) return; |
| 2208 |
|
push_int(env, (int)b/a); |
| 2209 |
|
|
| 2210 |
|
return; |
| 2211 |
|
} |
| 2212 |
|
|
| 2213 |
|
printerr("Bad Argument Type"); |
| 2214 |
|
env->err= 2; |
| 2215 |
|
} |