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