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#include <merror.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "parse.h"
#define SYMTBL_INIT_LEN 24
int symtbl_init(struct symbol_table *sym_tbl)
{
sym_tbl->len = SYMTBL_INIT_LEN;
sym_tbl->count = 0;
sym_tbl->symbols = malloc(sizeof(struct symbol) * SYMTBL_INIT_LEN);
if (sym_tbl->symbols == NULL) {
ERROR("cannot alloc");
return M_ERROR;
}
return M_SUCCESS;
}
void symtbl_free(struct symbol_table *sym_tbl)
{
free(sym_tbl->symbols);
}
int symtbl_push(struct symbol_table *sym_tbl, struct symbol sym)
{
if (sym_tbl->count >= sym_tbl->len) {
sym_tbl->len *= 2;
sym_tbl->symbols = realloc(sym_tbl->symbols,
sizeof(struct symbol) * sym_tbl->len);
if (sym_tbl->symbols == NULL) {
ERROR("cannot relloc");
return M_ERROR;
}
}
sym_tbl->symbols[sym_tbl->count++] = sym;
return M_SUCCESS;
}
int symtbl_find(struct symbol_table *sym_tbl, struct symbol **ptr,
const char name[MAX_LEX_LENGTH])
{
for (uint32_t i = 0; i < sym_tbl->count; i++) {
struct symbol *sym = &sym_tbl->symbols[i];
if (strcmp(sym->name, name) == 0) {
if (ptr != NULL)
*ptr = sym;
return M_SUCCESS;
}
}
return M_ERROR;
}
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