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/*
 * The MIT License
 *
 * Copyright (c) 2015 WANG Lingsong
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.jsfr.json;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;

/**
 * Created by Administrator on 2015/3/25.
 */
public class GsonProvider implements JsonProvider {

    private static final Gson DEFAULT_GSON = new GsonBuilder().create();

    @Override
    public JsonObject createObject() {
        return new JsonObject();
    }

    @Override
    public JsonArray createArray() {
        return new JsonArray();
    }

    @Override
    public boolean isObject(Object object) {
        return object instanceof JsonObject;
    }

    @Override
    public boolean isArray(Object array) {
        return array instanceof JsonArray;
    }

    @Override
    public void consumeObjectEntry(JsonObject object, String key, JsonElement value) {
        object.add(key, value);
    }

    @Override
    public void consumeArrayElement(JsonArray array, JsonElement value) {
        array.add(value);
    }

    @Override
    public JsonElement primitive(boolean value) {
        return new JsonPrimitive(value);
    }

    @Override
    public JsonElement primitive(int value) {
        return new JsonPrimitive(value);
    }

    @Override
    public JsonElement primitive(double value) {
        return new JsonPrimitive(value);
    }

    @Override
    public JsonElement primitive(String value) {
        return new JsonPrimitive(value);
    }

    @Override
    public JsonElement primitiveNull() {
        return JsonNull.INSTANCE;
    }

    @Override
    public  T cast(JsonElement value, Class tClass) {
        if (DEFAULT_GSON.getAdapter(tClass) != null) {
            return DEFAULT_GSON.fromJson(value, tClass);
        } else {
            return (T) value;
        }
    }

}