containers.c

// containers.c
// SPDX-License-Identifier: Apache-2.0
/*
Copyright 2019, 2020 hiromi-mi

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "main.h"
#include "selfhost.h"
#include <stdlib.h>
#include <string.h>

// Vector
Vector *new_vector(void) {
   Vector *vec = malloc(sizeof(Vector));
   vec->capacity = 16;
   vec->data = malloc(sizeof(Token *) * vec->capacity);
   vec->len = 0;
   return vec;
}

int vec_push(Vector *vec, Token *element) {
   if (vec->capacity == vec->len) {
      vec->capacity *= 2;
      vec->data = realloc(vec->data, sizeof(Token *) * vec->capacity);
      if (!vec->data) {
         error("Error: Realloc failed: %ld\n", vec->capacity);
      }
   }
   vec->data[vec->len] = element;
   return vec->len++;
}

// Map
Map *new_map(void) {
   Map *map = malloc(sizeof(Map));
   map->keys = new_vector();
   map->vals = new_vector();
   return map;
}

int map_put(Map *map, const char *key, const void *val) {
   vec_push(map->keys, (void *)key);
   return vec_push(map->vals, (void *)val);
}

void *map_get(const Map *map, const char *key) {
   int i;
   for (i = map->keys->len - 1; i >= 0; i--) {
      if (strcmp((char *)map->keys->data[i], key) == 0) {
         return map->vals->data[i];
      }
   }
   return NULL;
}