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/*
* Keyword hashmap.
* Copyright (c) 2023-2024, Quinn Stephens and the OSMORA team.
* Provided under the BSD 3-Clause license.
*/
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "hash.h"
#include "hashmap.h"
#include "debug.h"
#include "lexer/keywords.h"
#define HASHMAP_ROWS 8
struct keyword {
struct hashmap_entry hashmap_entry;
size_t len;
token_kind_t value;
};
static bool initialized = false;
static struct list keywords_rows[HASHMAP_ROWS];
static struct hashmap keywords;
static void
add_keyword(char *name, token_kind_t value)
{
size_t len;
struct keyword *kwd;
len = strlen(name);
kwd = malloc(sizeof(struct keyword));
kwd->hashmap_entry.hash = hash_data(name, len);
kwd->len = len;
kwd->value = value;
hashmap_add(&keywords, &kwd->hashmap_entry);
}
token_kind_t
keywords_find(struct token *tok)
{
struct keyword *kwd;
kwd = (struct keyword*)hashmap_find(&keywords, tok->hash);
if (kwd == NULL || kwd->len != tok->len) {
return TK_UNKNOWN;
}
return kwd->value;
}
void
keywords_init(void)
{
if (initialized) {
return;
}
debug("Initializing keywords...\n");
keywords.rows = keywords_rows;
keywords.n_rows = HASHMAP_ROWS;
hashmap_init(&keywords);
add_keyword("proc", TK_PROC);
add_keyword("type", TK_TYPE);
add_keyword("enum", TK_ENUM);
add_keyword("struct", TK_STRUCT);
initialized = true;
}
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