com.flipkart.android.proteus.demo.converter.GsonResponseBodyConverter.java Source code

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Here is the source code for com.flipkart.android.proteus.demo.converter.GsonResponseBodyConverter.java

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/*
 * Apache License
 * Version 2.0, January 2004
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 * Copyright (c) 2017 Flipkart Internet Pvt. Ltd.
 *
 * 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.flipkart.android.proteus.demo.converter;

import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;

import java.io.IOException;
import java.lang.reflect.Type;

import okhttp3.ResponseBody;
import retrofit2.Converter;

final class GsonResponseBodyConverter<T> implements Converter<ResponseBody, T> {
    private final Gson gson;
    private final Type type;
    private TypeAdapter<T> typeAdapter;

    GsonResponseBodyConverter(Gson gson, Type type) {
        this.gson = gson;
        this.type = type;
    }

    private TypeAdapter<T> getAdapter() {
        if (null == typeAdapter) {
            //noinspection unchecked
            typeAdapter = (TypeAdapter<T>) gson.getAdapter(TypeToken.get(type));
        }
        return typeAdapter;
    }

    @Override
    public T convert(ResponseBody value) throws IOException {
        TypeAdapter<T> adapter = getAdapter();
        JsonReader jsonReader = gson.newJsonReader(value.charStream());
        jsonReader.setLenient(true);
        try {
            return adapter.read(jsonReader);
        } finally {
            value.close();
        }
    }
}