com.kotcrab.vis.editor.serializer.json.ArrayJsonSerializer.java Source code

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Here is the source code for com.kotcrab.vis.editor.serializer.json.ArrayJsonSerializer.java

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/*
 * Copyright 2014-2016 See AUTHORS file.
 *
 * 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.
 */

package com.kotcrab.vis.editor.serializer.json;

import com.badlogic.gdx.utils.Array;
import com.google.gson.*;

import java.lang.reflect.Type;

/** @author Kotcrab */
public class ArrayJsonSerializer<T> implements JsonSerializer<Array<T>>, JsonDeserializer<Array<T>> {
    public static final String PRIMITIVE_CONTENT = "@content";

    @Override
    public JsonElement serialize(Array<T> array, Type typeOfSrc, JsonSerializationContext context) {
        JsonArray jsonArray = new JsonArray();
        for (T element : array) {
            JsonElement jsonElement = context.serialize(element);

            if (jsonElement.isJsonObject()) {
                GsonUtils.appendClassProperty(jsonElement.getAsJsonObject(), element, context);
            } else if (jsonElement.isJsonPrimitive()) {
                JsonObject jsonNestedPrimitive = new JsonObject();
                jsonNestedPrimitive.add(PRIMITIVE_CONTENT, jsonElement);
                GsonUtils.appendClassProperty(jsonNestedPrimitive, element, context);
                jsonElement = jsonNestedPrimitive;
            } else if (jsonElement instanceof JsonArray) {
                throw new UnsupportedOperationException("Nested Arrays are not supported by ArrayJsonSerializer");
            }

            jsonArray.add(jsonElement);
        }

        return jsonArray;
    }

    @Override
    public Array<T> deserialize(JsonElement element, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        JsonArray jsonArray = element.getAsJsonArray();
        Array<T> array = new Array<>(jsonArray.size());

        for (JsonElement jsonElement : jsonArray) {
            if (jsonElement.isJsonObject()) {
                JsonObject jsonObjectElement = jsonElement.getAsJsonObject();
                if (jsonObjectElement.has(PRIMITIVE_CONTENT)) {
                    array.add(context.deserialize(jsonObjectElement.get(PRIMITIVE_CONTENT),
                            GsonUtils.readClassProperty(jsonObjectElement, context)));
                } else {
                    array.add(context.deserialize(jsonObjectElement,
                            GsonUtils.readClassProperty(jsonObjectElement, context)));
                }

                continue;
            }

            throw new UnsupportedOperationException("Invalid JsonElement type in ArrayJsonSerializer");
        }

        return array;
    }
}