896 |
push_int(&(env->head), env->err); |
push_int(&(env->head), env->err); |
897 |
} |
} |
898 |
|
|
899 |
|
extern void read(environment*); |
900 |
|
|
901 |
int main() |
int main() |
902 |
{ |
{ |
903 |
environment myenv; |
environment myenv; |
|
char in_string[100]; |
|
904 |
|
|
905 |
init_env(&myenv); |
init_env(&myenv); |
906 |
|
|
907 |
printf("okidok\n "); |
while(1) { |
908 |
|
fprintf(stderr, "okidok\n "); |
909 |
while(fgets(in_string, 100, stdin) != NULL) { |
read(&myenv); |
|
stack_read(&myenv, in_string); |
|
910 |
if(myenv.err) { |
if(myenv.err) { |
911 |
printf("(error %d) ", myenv.err); |
printf("(error %d) ", myenv.err); |
912 |
myenv.err=0; |
myenv.err=0; |
913 |
|
} else if(myenv.head->item->type==symb |
914 |
|
&& ((symbol*)(myenv.head->item->content.ptr))->id[0]==';') { |
915 |
|
toss(&myenv); /* No error check in main */ |
916 |
|
eval(&myenv); |
917 |
} |
} |
|
printf("okidok\n "); |
|
918 |
} |
} |
919 |
quit(&myenv); |
quit(&myenv); |
920 |
return EXIT_FAILURE; |
return EXIT_FAILURE; |
1270 |
push_sym(env, "["); |
push_sym(env, "["); |
1271 |
pack(env); if(env->err) return; |
pack(env); if(env->err) return; |
1272 |
} |
} |
1273 |
|
|
1274 |
|
/* Read a string */ |
1275 |
|
extern void readline(environment *env) { |
1276 |
|
char in_string[101]; |
1277 |
|
|
1278 |
|
fgets(in_string, 100, stdin); |
1279 |
|
push_cstring(&(env->head), in_string); |
1280 |
|
} |
1281 |
|
|
1282 |
|
/* Read a value and place on stack */ |
1283 |
|
extern void read(environment *env) { |
1284 |
|
const char symbform[]= "%[a-zA-Z0-9!$%*+./:<=>?@^_~-]%100c"; |
1285 |
|
const char strform[]= "\"%[^\"]\"%100c"; |
1286 |
|
const char intform[]= "%i%100c"; |
1287 |
|
const char blankform[]= "%*[ \t]%100c"; |
1288 |
|
const char ebrackform[]= "%*1[]]%100c"; |
1289 |
|
const char semicform[]= "%*1[;]%100c"; |
1290 |
|
const char bbrackform[]= "%*1[[]%100c"; |
1291 |
|
|
1292 |
|
int itemp, rerun= 0; |
1293 |
|
static int depth= 0; |
1294 |
|
char *rest, *match; |
1295 |
|
static char *in_string= NULL; |
1296 |
|
size_t inlength; |
1297 |
|
|
1298 |
|
if(in_string==NULL) { |
1299 |
|
readline(env); if(env->err) return; |
1300 |
|
|
1301 |
|
in_string= malloc(strlen(env->head->item->content.ptr)+1); |
1302 |
|
strcpy(in_string, env->head->item->content.ptr); |
1303 |
|
toss(env); if(env->err) return; |
1304 |
|
} |
1305 |
|
|
1306 |
|
inlength= strlen(in_string)+1; |
1307 |
|
match= malloc(inlength); |
1308 |
|
rest= malloc(inlength); |
1309 |
|
|
1310 |
|
if(sscanf(in_string, blankform, rest)) { |
1311 |
|
rerun= 1; |
1312 |
|
} else if(sscanf(in_string, intform, &itemp, rest) > 0) { |
1313 |
|
push_int(&(env->head), itemp); |
1314 |
|
} else if(sscanf(in_string, strform, match, rest) > 0) { |
1315 |
|
push_cstring(&(env->head), match); |
1316 |
|
} else if(sscanf(in_string, symbform, match, rest) > 0) { |
1317 |
|
push_sym(env, match); |
1318 |
|
} else if(sscanf(in_string, ebrackform, rest) > 0) { |
1319 |
|
push_sym(env, "["); |
1320 |
|
pack(env); if(env->err) return; |
1321 |
|
if(depth!=0) depth--; |
1322 |
|
} else if(sscanf(in_string, semicform, rest) > 0) { |
1323 |
|
push_sym(env, ";"); |
1324 |
|
} else if(sscanf(in_string, bbrackform, rest) > 0) { |
1325 |
|
push_sym(env, "["); |
1326 |
|
depth++; |
1327 |
|
} else { |
1328 |
|
free(rest); |
1329 |
|
rest= NULL; |
1330 |
|
rerun= 1; |
1331 |
|
} |
1332 |
|
|
1333 |
|
free(in_string); |
1334 |
|
free(match); |
1335 |
|
|
1336 |
|
in_string= rest; |
1337 |
|
|
1338 |
|
if(rerun || depth) |
1339 |
|
return read(env); |
1340 |
|
} |