36 lines
879 B
C
36 lines
879 B
C
#include "forth.h"
|
|
|
|
Word* add_primitive(const char* name, void (*code)(Word*), uint8_t flags) {
|
|
Word* w = malloc(sizeof(Word));
|
|
if (!w) {
|
|
fprintf(stderr, "Out of memory\n");
|
|
exit(1);
|
|
}
|
|
w->prev = dict_head;
|
|
dict_head = w;
|
|
|
|
size_t len = strlen(name);
|
|
if (len > MAX_NAME_LEN) len = MAX_NAME_LEN;
|
|
w->flags = flags | (uint8_t)len;
|
|
memcpy(w->name, name, len);
|
|
w->name[len] = '\0';
|
|
w->code = code;
|
|
w->body = NULL;
|
|
return w;
|
|
}
|
|
|
|
Word* lookup_word(const char* name) {
|
|
for (Word* w = dict_head; w != NULL; w = w->prev) {
|
|
if (w->flags & (1 << 6)) continue;
|
|
if (strcmp(w->name, name) == 0) return w;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
Word* lookup_word_internal(const char* name) {
|
|
for (Word* w = dict_head; w != NULL; w = w->prev) {
|
|
if (strcmp(w->name, name) == 0) return w;
|
|
}
|
|
return NULL;
|
|
}
|