48 |
typedef struct stackitem_struct |
typedef struct stackitem_struct |
49 |
{ |
{ |
50 |
value *item; /* The value on the stack */ |
value *item; /* The value on the stack */ |
51 |
|
/* (This is never NULL) */ |
52 |
struct stackitem_struct *next; /* Next item */ |
struct stackitem_struct *next; /* Next item */ |
53 |
} stackitem; |
} stackitem; |
54 |
|
|
59 |
hashtbl symbols; /* Hash table of all variable bindings */ |
hashtbl symbols; /* Hash table of all variable bindings */ |
60 |
int err; /* Error flag */ |
int err; /* Error flag */ |
61 |
int non_eval_flag; |
int non_eval_flag; |
62 |
|
char *in_string; /* Input pending to be read */ |
63 |
} environment; |
} environment; |
64 |
|
|
65 |
/* A type for pointers to external functions */ |
/* A type for pointers to external functions */ |
71 |
{ |
{ |
72 |
int i; |
int i; |
73 |
|
|
74 |
|
env->in_string= NULL; |
75 |
env->err= 0; |
env->err= 0; |
76 |
env->non_eval_flag= 0; |
env->non_eval_flag= 0; |
77 |
for(i= 0; i<HASHTBLSIZE; i++) |
for(i= 0; i<HASHTBLSIZE; i++) |
349 |
case list: |
case list: |
350 |
push_sym(env, "list"); |
push_sym(env, "list"); |
351 |
break; |
break; |
|
default: |
|
|
push_sym(env, "unknown"); |
|
|
break; |
|
352 |
} |
} |
353 |
} |
} |
354 |
|
|
360 |
printf("%d", stack_head->item->content.val); |
printf("%d", stack_head->item->content.val); |
361 |
break; |
break; |
362 |
case string: |
case string: |
363 |
printf("\"%s\"", (char*)stack_head->item->content.ptr); |
printf("%s", (char*)stack_head->item->content.ptr); |
364 |
break; |
break; |
365 |
case symb: |
case symb: |
366 |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
printf("%s", ((symbol *)(stack_head->item->content.ptr))->id); |
379 |
} |
} |
380 |
printf("]"); |
printf("]"); |
381 |
break; |
break; |
|
default: |
|
|
printf("#<unknown %p>", (stack_head->item->content.ptr)); |
|
|
break; |
|
382 |
} |
} |
383 |
} |
} |
384 |
|
|
435 |
env->head->next= temp; |
env->head->next= temp; |
436 |
} |
} |
437 |
|
|
438 |
|
/* Rotate the first three elements on the stack. */ |
439 |
|
extern void rot(environment *env) |
440 |
|
{ |
441 |
|
stackitem *temp= env->head; |
442 |
|
|
443 |
|
if(env->head==NULL || env->head->next==NULL |
444 |
|
|| env->head->next->next==NULL) { |
445 |
|
printerr("Too Few Arguments"); |
446 |
|
env->err=1; |
447 |
|
return; |
448 |
|
} |
449 |
|
|
450 |
|
env->head= env->head->next->next; |
451 |
|
temp->next->next= env->head->next; |
452 |
|
env->head->next= temp; |
453 |
|
} |
454 |
|
|
455 |
/* Recall a value from a symbol, if bound */ |
/* Recall a value from a symbol, if bound */ |
456 |
extern void rcl(environment *env) |
extern void rcl(environment *env) |
457 |
{ |
{ |
480 |
push_val(&(env->head), val); /* Return its bound value */ |
push_val(&(env->head), val); /* Return its bound value */ |
481 |
} |
} |
482 |
|
|
|
void stack_read(environment*, char*); |
|
|
|
|
483 |
/* 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 |
484 |
function value, and if it is, toss the symbol and execute the |
function value, and if it is, toss the symbol and execute the |
485 |
function. */ |
function. */ |
488 |
funcp in_func; |
funcp in_func; |
489 |
value* temp_val; |
value* temp_val; |
490 |
stackitem* iterator; |
stackitem* iterator; |
|
char* temp_string; |
|
491 |
|
|
492 |
if(env->head==NULL) { |
if(env->head==NULL) { |
493 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
495 |
return; |
return; |
496 |
} |
} |
497 |
|
|
498 |
|
eval_start: |
499 |
|
|
500 |
switch(env->head->item->type) { |
switch(env->head->item->type) { |
501 |
/* if it's a symbol */ |
/* if it's a symbol */ |
502 |
case symb: |
case symb: |
503 |
rcl(env); /* get its contents */ |
rcl(env); /* get its contents */ |
504 |
if(env->err) return; |
if(env->err) return; |
505 |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
if(env->head->item->type!=symb){ /* don't recurse symbols */ |
506 |
eval(env); /* evaluate the value */ |
goto eval_start; |
|
return; |
|
507 |
} |
} |
508 |
break; |
return; |
509 |
|
|
510 |
/* If it's a lone function value, run it */ |
/* If it's a lone function value, run it */ |
511 |
case func: |
case func: |
512 |
in_func= (funcp)(env->head->item->content.ptr); |
in_func= (funcp)(env->head->item->content.ptr); |
513 |
toss(env); |
toss(env); |
514 |
if(env->err) return; |
if(env->err) return; |
515 |
(*in_func)(env); |
return (*in_func)(env); |
|
break; |
|
516 |
|
|
517 |
/* If it's a list */ |
/* If it's a list */ |
518 |
case list: |
case list: |
521 |
toss(env); |
toss(env); |
522 |
if(env->err) return; |
if(env->err) return; |
523 |
iterator= (stackitem*)temp_val->content.ptr; |
iterator= (stackitem*)temp_val->content.ptr; |
524 |
while(iterator!=NULL && iterator->item!=NULL) { |
while(iterator!=NULL) { |
525 |
push_val(&(env->head), iterator->item); |
push_val(&(env->head), iterator->item); |
526 |
if(env->head->item->type==symb |
if(env->head->item->type==symb |
527 |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
&& strcmp(";", ((symbol*)(env->head->item->content.ptr))->id)==0) { |
528 |
toss(env); |
toss(env); |
529 |
if(env->err) return; |
if(env->err) return; |
530 |
|
if(iterator->next == NULL){ |
531 |
|
free_val(temp_val); |
532 |
|
goto eval_start; |
533 |
|
} |
534 |
eval(env); |
eval(env); |
535 |
if(env->err) return; |
if(env->err) return; |
536 |
} |
} |
537 |
iterator= iterator->next; |
iterator= iterator->next; |
538 |
} |
} |
539 |
free_val(temp_val); |
free_val(temp_val); |
540 |
break; |
return; |
|
|
|
|
/* If it's a string */ |
|
|
case string: |
|
|
temp_val= env->head->item; |
|
|
env->head->item->refcount++; |
|
|
toss(env); |
|
|
if(env->err) return; |
|
|
temp_string= malloc(strlen((char*)temp_val->content.ptr)+5); |
|
|
strcpy(temp_string, "[ "); |
|
|
strcat(temp_string, (char*)temp_val->content.ptr); |
|
|
strcat(temp_string, " ]"); |
|
|
stack_read(env, temp_string); |
|
|
eval(env); |
|
|
if(env->err) return; |
|
|
free_val(temp_val); |
|
|
free(temp_string); |
|
|
break; |
|
541 |
|
|
542 |
case integer: |
default: |
543 |
break; |
return; |
544 |
} |
} |
545 |
} |
} |
546 |
|
|
614 |
rev(env); |
rev(env); |
615 |
} |
} |
616 |
|
|
|
/* Parse input. */ |
|
|
void stack_read(environment *env, char *in_line) |
|
|
{ |
|
|
char *temp, *rest; |
|
|
int itemp; |
|
|
size_t inlength= strlen(in_line)+1; |
|
|
int convert= 0; |
|
|
|
|
|
temp= malloc(inlength); |
|
|
rest= malloc(inlength); |
|
|
|
|
|
do { |
|
|
/* If comment */ |
|
|
if((convert= sscanf(in_line, "#%[^\n\r]", rest))) { |
|
|
free(temp); free(rest); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* If string */ |
|
|
if((convert= sscanf(in_line, "\"%[^\"\n\r]\" %[^\n\r]", temp, rest))) { |
|
|
push_cstring(&(env->head), temp); |
|
|
break; |
|
|
} |
|
|
/* If integer */ |
|
|
if((convert= sscanf(in_line, "%d %[^\n\r]", &itemp, rest))) { |
|
|
push_int(&(env->head), itemp); |
|
|
break; |
|
|
} |
|
|
/* Escape ';' with '\' */ |
|
|
if((convert= sscanf(in_line, "\\%c%[^\n\r]", temp, rest))) { |
|
|
temp[1]= '\0'; |
|
|
push_sym(env, temp); |
|
|
break; |
|
|
} |
|
|
/* If symbol */ |
|
|
if((convert= sscanf(in_line, "%[^][ ;\n\r]%[^\n\r]", temp, rest))) { |
|
|
push_sym(env, temp); |
|
|
break; |
|
|
} |
|
|
/* If single char */ |
|
|
if((convert= sscanf(in_line, "%c%[^\n\r]", temp, rest))) { |
|
|
if(*temp==';') { |
|
|
if(!env->non_eval_flag) { |
|
|
eval(env); /* Evaluate top element */ |
|
|
break; |
|
|
} |
|
|
|
|
|
push_sym(env, ";"); |
|
|
break; |
|
|
} |
|
|
|
|
|
if(*temp==']') { |
|
|
push_sym(env, "["); |
|
|
pack(env); |
|
|
if(env->non_eval_flag) |
|
|
env->non_eval_flag--; |
|
|
break; |
|
|
} |
|
|
|
|
|
if(*temp=='[') { |
|
|
push_sym(env, "["); |
|
|
env->non_eval_flag++; |
|
|
break; |
|
|
} |
|
|
} |
|
|
} while(0); |
|
|
|
|
|
free(temp); |
|
|
|
|
|
if(convert<2) { |
|
|
free(rest); |
|
|
return; |
|
|
} |
|
|
|
|
|
stack_read(env, rest); |
|
|
|
|
|
free(rest); |
|
|
} |
|
|
|
|
617 |
/* Relocate elements of the list on the stack. */ |
/* Relocate elements of the list on the stack. */ |
618 |
extern void expand(environment *env) |
extern void expand(environment *env) |
619 |
{ |
{ |
801 |
push_int(&(env->head), env->err); |
push_int(&(env->head), env->err); |
802 |
} |
} |
803 |
|
|
804 |
|
extern void read(environment*); |
805 |
|
|
806 |
int main() |
int main() |
807 |
{ |
{ |
808 |
environment myenv; |
environment myenv; |
|
char in_string[100]; |
|
809 |
|
|
810 |
init_env(&myenv); |
init_env(&myenv); |
811 |
|
|
812 |
printf("okidok\n "); |
while(1) { |
813 |
|
if(myenv.in_string==NULL) |
814 |
while(fgets(in_string, 100, stdin) != NULL) { |
printstack(&myenv); |
815 |
stack_read(&myenv, in_string); |
read(&myenv); |
816 |
if(myenv.err) { |
if(myenv.err) { |
817 |
printf("(error %d) ", myenv.err); |
printf("(error %d) ", myenv.err); |
818 |
myenv.err=0; |
myenv.err=0; |
819 |
|
} else if(myenv.head!=NULL |
820 |
|
&& myenv.head->item->type==symb |
821 |
|
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
822 |
|
toss(&myenv); /* No error check in main */ |
823 |
|
eval(&myenv); |
824 |
} |
} |
|
printf("okidok\n "); |
|
825 |
} |
} |
826 |
quit(&myenv); |
quit(&myenv); |
827 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
867 |
a=env->head->item->content.val; |
a=env->head->item->content.val; |
868 |
toss(env); |
toss(env); |
869 |
if(env->err) return; |
if(env->err) return; |
870 |
b=env->head->item->content.val; |
if(env->head->item->refcount == 1) |
871 |
|
env->head->item->content.val += a; |
872 |
|
else { |
873 |
|
b=env->head->item->content.val; |
874 |
|
toss(env); |
875 |
|
if(env->err) return; |
876 |
|
push_int(&(env->head), a+b); |
877 |
|
} |
878 |
|
} |
879 |
|
|
880 |
|
/* - */ |
881 |
|
extern void sx_2d(environment *env) { |
882 |
|
int a, b; |
883 |
|
|
884 |
|
if((env->head)==NULL || env->head->next==NULL) { |
885 |
|
printerr("Too Few Arguments"); |
886 |
|
env->err=1; |
887 |
|
return; |
888 |
|
} |
889 |
|
|
890 |
|
if(env->head->item->type!=integer |
891 |
|
|| env->head->next->item->type!=integer) { |
892 |
|
printerr("Bad Argument Type"); |
893 |
|
env->err=2; |
894 |
|
return; |
895 |
|
} |
896 |
|
a=env->head->item->content.val; |
897 |
toss(env); |
toss(env); |
898 |
if(env->err) return; |
if(env->err) return; |
899 |
push_int(&(env->head), a+b); |
if(env->head->item->refcount == 1) |
900 |
|
env->head->item->content.val -= a; |
901 |
|
else { |
902 |
|
b=env->head->item->content.val; |
903 |
|
toss(env); |
904 |
|
if(env->err) return; |
905 |
|
push_int(&(env->head), b-a); |
906 |
|
} |
907 |
|
} |
908 |
|
|
909 |
|
/* > */ |
910 |
|
extern void sx_3e(environment *env) { |
911 |
|
int a, b; |
912 |
|
|
913 |
|
if((env->head)==NULL || env->head->next==NULL) { |
914 |
|
printerr("Too Few Arguments"); |
915 |
|
env->err=1; |
916 |
|
return; |
917 |
|
} |
918 |
|
|
919 |
|
if(env->head->item->type!=integer |
920 |
|
|| env->head->next->item->type!=integer) { |
921 |
|
printerr("Bad Argument Type"); |
922 |
|
env->err=2; |
923 |
|
return; |
924 |
|
} |
925 |
|
a=env->head->item->content.val; |
926 |
|
toss(env); |
927 |
|
if(env->err) return; |
928 |
|
if(env->head->item->refcount == 1) |
929 |
|
env->head->item->content.val = (env->head->item->content.val > a); |
930 |
|
else { |
931 |
|
b=env->head->item->content.val; |
932 |
|
toss(env); |
933 |
|
if(env->err) return; |
934 |
|
push_int(&(env->head), b>a); |
935 |
|
} |
936 |
} |
} |
937 |
|
|
938 |
/* Return copy of a value */ |
/* Return copy of a value */ |
989 |
} |
} |
990 |
push_val(&(env->head), copy_val(env->head->item)); |
push_val(&(env->head), copy_val(env->head->item)); |
991 |
} |
} |
992 |
|
|
993 |
|
/* "if", If-Then */ |
994 |
|
extern void sx_6966(environment *env) { |
995 |
|
|
996 |
|
int truth; |
997 |
|
|
998 |
|
if((env->head)==NULL || env->head->next==NULL) { |
999 |
|
printerr("Too Few Arguments"); |
1000 |
|
env->err=1; |
1001 |
|
return; |
1002 |
|
} |
1003 |
|
|
1004 |
|
if(env->head->next->item->type != integer) { |
1005 |
|
printerr("Bad Argument Type"); |
1006 |
|
env->err=2; |
1007 |
|
return; |
1008 |
|
} |
1009 |
|
|
1010 |
|
swap(env); |
1011 |
|
if(env->err) return; |
1012 |
|
|
1013 |
|
truth=env->head->item->content.val; |
1014 |
|
|
1015 |
|
toss(env); |
1016 |
|
if(env->err) return; |
1017 |
|
|
1018 |
|
if(truth) |
1019 |
|
eval(env); |
1020 |
|
else |
1021 |
|
toss(env); |
1022 |
|
} |
1023 |
|
|
1024 |
|
/* If-Then-Else */ |
1025 |
|
extern void ifelse(environment *env) { |
1026 |
|
|
1027 |
|
int truth; |
1028 |
|
|
1029 |
|
if((env->head)==NULL || env->head->next==NULL |
1030 |
|
|| env->head->next->next==NULL) { |
1031 |
|
printerr("Too Few Arguments"); |
1032 |
|
env->err=1; |
1033 |
|
return; |
1034 |
|
} |
1035 |
|
|
1036 |
|
if(env->head->next->next->item->type != integer) { |
1037 |
|
printerr("Bad Argument Type"); |
1038 |
|
env->err=2; |
1039 |
|
return; |
1040 |
|
} |
1041 |
|
|
1042 |
|
rot(env); |
1043 |
|
if(env->err) return; |
1044 |
|
|
1045 |
|
truth=env->head->item->content.val; |
1046 |
|
|
1047 |
|
toss(env); |
1048 |
|
if(env->err) return; |
1049 |
|
|
1050 |
|
if(!truth) |
1051 |
|
swap(env); |
1052 |
|
if(env->err) return; |
1053 |
|
|
1054 |
|
toss(env); |
1055 |
|
if(env->err) return; |
1056 |
|
|
1057 |
|
eval(env); |
1058 |
|
} |
1059 |
|
|
1060 |
|
/* while */ |
1061 |
|
extern void sx_7768696c65(environment *env) { |
1062 |
|
|
1063 |
|
int truth; |
1064 |
|
value *loop, *test; |
1065 |
|
|
1066 |
|
if((env->head)==NULL || env->head->next==NULL) { |
1067 |
|
printerr("Too Few Arguments"); |
1068 |
|
env->err=1; |
1069 |
|
return; |
1070 |
|
} |
1071 |
|
|
1072 |
|
loop= env->head->item; |
1073 |
|
loop->refcount++; |
1074 |
|
toss(env); if(env->err) return; |
1075 |
|
|
1076 |
|
test= env->head->item; |
1077 |
|
test->refcount++; |
1078 |
|
toss(env); if(env->err) return; |
1079 |
|
|
1080 |
|
do { |
1081 |
|
push_val(&(env->head), test); |
1082 |
|
eval(env); |
1083 |
|
|
1084 |
|
if(env->head->item->type != integer) { |
1085 |
|
printerr("Bad Argument Type"); |
1086 |
|
env->err=2; |
1087 |
|
return; |
1088 |
|
} |
1089 |
|
|
1090 |
|
truth= env->head->item->content.val; |
1091 |
|
toss(env); if(env->err) return; |
1092 |
|
|
1093 |
|
if(truth) { |
1094 |
|
push_val(&(env->head), loop); |
1095 |
|
eval(env); |
1096 |
|
} else { |
1097 |
|
toss(env); |
1098 |
|
} |
1099 |
|
|
1100 |
|
} while(truth); |
1101 |
|
|
1102 |
|
free_val(test); |
1103 |
|
free_val(loop); |
1104 |
|
} |
1105 |
|
|
1106 |
|
/* For-loop */ |
1107 |
|
extern void sx_666f72(environment *env) { |
1108 |
|
|
1109 |
|
value *loop, *foo; |
1110 |
|
stackitem *iterator; |
1111 |
|
|
1112 |
|
if((env->head)==NULL || env->head->next==NULL) { |
1113 |
|
printerr("Too Few Arguments"); |
1114 |
|
env->err=1; |
1115 |
|
return; |
1116 |
|
} |
1117 |
|
|
1118 |
|
if(env->head->next->item->type != list) { |
1119 |
|
printerr("Bad Argument Type"); |
1120 |
|
env->err=2; |
1121 |
|
return; |
1122 |
|
} |
1123 |
|
|
1124 |
|
loop= env->head->item; |
1125 |
|
loop->refcount++; |
1126 |
|
toss(env); if(env->err) return; |
1127 |
|
|
1128 |
|
foo= env->head->item; |
1129 |
|
foo->refcount++; |
1130 |
|
toss(env); if(env->err) return; |
1131 |
|
|
1132 |
|
iterator= foo->content.ptr; |
1133 |
|
|
1134 |
|
while(iterator!=NULL) { |
1135 |
|
push_val(&(env->head), iterator->item); |
1136 |
|
push_val(&(env->head), loop); |
1137 |
|
eval(env); if(env->err) return; |
1138 |
|
iterator= iterator->next; |
1139 |
|
} |
1140 |
|
|
1141 |
|
free_val(loop); |
1142 |
|
free_val(foo); |
1143 |
|
} |
1144 |
|
|
1145 |
|
/* 'to' */ |
1146 |
|
extern void to(environment *env) { |
1147 |
|
int i, start, ending; |
1148 |
|
|
1149 |
|
if((env->head)==NULL || env->head->next==NULL) { |
1150 |
|
printerr("Too Few Arguments"); |
1151 |
|
env->err=1; |
1152 |
|
return; |
1153 |
|
} |
1154 |
|
|
1155 |
|
if(env->head->item->type!=integer |
1156 |
|
|| env->head->next->item->type!=integer) { |
1157 |
|
printerr("Bad Argument Type"); |
1158 |
|
env->err=2; |
1159 |
|
return; |
1160 |
|
} |
1161 |
|
|
1162 |
|
ending= env->head->item->content.val; |
1163 |
|
toss(env); if(env->err) return; |
1164 |
|
start= env->head->item->content.val; |
1165 |
|
toss(env); if(env->err) return; |
1166 |
|
|
1167 |
|
push_sym(env, "["); |
1168 |
|
|
1169 |
|
if(ending>=start) { |
1170 |
|
for(i= start; i<=ending; i++) |
1171 |
|
push_int(&(env->head), i); |
1172 |
|
} else { |
1173 |
|
for(i= start; i>=ending; i--) |
1174 |
|
push_int(&(env->head), i); |
1175 |
|
} |
1176 |
|
|
1177 |
|
push_sym(env, "["); |
1178 |
|
pack(env); if(env->err) return; |
1179 |
|
} |
1180 |
|
|
1181 |
|
/* Read a string */ |
1182 |
|
extern void readline(environment *env) { |
1183 |
|
char in_string[101]; |
1184 |
|
|
1185 |
|
fgets(in_string, 100, stdin); |
1186 |
|
push_cstring(&(env->head), in_string); |
1187 |
|
} |
1188 |
|
|
1189 |
|
/* Read a value and place on stack */ |
1190 |
|
extern void read(environment *env) { |
1191 |
|
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%[\001-\377]"; |
1192 |
|
const char strform[]= "\"%[^\"]\"%[\001-\377]"; |
1193 |
|
const char intform[]= "%i%[\001-\377]"; |
1194 |
|
const char blankform[]= "%*[ \t]%[\001-\377]"; |
1195 |
|
const char ebrackform[]= "%*1[]]%[\001-\377]"; |
1196 |
|
const char semicform[]= "%*1[;]%[\001-\377]"; |
1197 |
|
const char bbrackform[]= "%*1[[]%[\001-\377]"; |
1198 |
|
|
1199 |
|
int itemp; |
1200 |
|
static int depth= 0; |
1201 |
|
char *rest, *match; |
1202 |
|
size_t inlength; |
1203 |
|
|
1204 |
|
if(env->in_string==NULL) { |
1205 |
|
readline(env); if(env->err) return; |
1206 |
|
|
1207 |
|
env->in_string= malloc(strlen(env->head->item->content.ptr)+1); |
1208 |
|
strcpy(env->in_string, env->head->item->content.ptr); |
1209 |
|
toss(env); if(env->err) return; |
1210 |
|
} |
1211 |
|
|
1212 |
|
inlength= strlen(env->in_string)+1; |
1213 |
|
match= malloc(inlength); |
1214 |
|
rest= malloc(inlength); |
1215 |
|
|
1216 |
|
if(sscanf(env->in_string, blankform, rest)) { |
1217 |
|
; |
1218 |
|
} else if(sscanf(env->in_string, intform, &itemp, rest) > 0) { |
1219 |
|
push_int(&(env->head), itemp); |
1220 |
|
} else if(sscanf(env->in_string, strform, match, rest) > 0) { |
1221 |
|
push_cstring(&(env->head), match); |
1222 |
|
} else if(sscanf(env->in_string, symbform, match, rest) > 0) { |
1223 |
|
push_sym(env, match); |
1224 |
|
} else if(sscanf(env->in_string, ebrackform, rest) > 0) { |
1225 |
|
push_sym(env, "["); |
1226 |
|
pack(env); if(env->err) return; |
1227 |
|
if(depth!=0) depth--; |
1228 |
|
} else if(sscanf(env->in_string, semicform, rest) > 0) { |
1229 |
|
push_sym(env, ";"); |
1230 |
|
} else if(sscanf(env->in_string, bbrackform, rest) > 0) { |
1231 |
|
push_sym(env, "["); |
1232 |
|
depth++; |
1233 |
|
} else { |
1234 |
|
free(rest); |
1235 |
|
rest= NULL; |
1236 |
|
} |
1237 |
|
|
1238 |
|
free(env->in_string); |
1239 |
|
free(match); |
1240 |
|
|
1241 |
|
env->in_string= rest; |
1242 |
|
|
1243 |
|
if(depth) |
1244 |
|
return read(env); |
1245 |
|
} |