NullTolerantJsonReader.java

package com.github.genderquery;

import android.util.JsonReader;
import android.util.JsonToken;

import java.io.Closeable;
import java.io.IOException;
import java.io.Reader;

/**
 * A thin wrapper around {@link JsonReader} that adds null-tolerant versions of nextX() will return
 * null if the JSON token is null.
 */
public class NullTolerantJsonReader implements Closeable {

    private JsonReader mJsonReader;

    public NullTolerantJsonReader(Reader in) {
        mJsonReader = new JsonReader(in);
    }

    public void setLenient(boolean lenient) {
        mJsonReader.setLenient(lenient);
    }

    public boolean isLenient() {
        return mJsonReader.isLenient();
    }

    public void beginArray() throws IOException {
        mJsonReader.beginArray();
    }

    public void endArray() throws IOException {
        mJsonReader.endArray();
    }

    public void beginObject() throws IOException {
        mJsonReader.beginObject();
    }

    public void endObject() throws IOException {
        mJsonReader.endObject();
    }

    public boolean hasNext() throws IOException {
        return mJsonReader.hasNext();
    }

    public JsonToken peek() throws IOException {
        return mJsonReader.peek();
    }

    public String nextName() throws IOException {
        return mJsonReader.nextName();
    }

    public String nextString() throws IOException {
        return mJsonReader.nextString();
    }

    public String nextStringOrNull() throws IOException {
        if (mJsonReader.peek() == JsonToken.NULL) {
            return null;
        }
        return mJsonReader.nextString();
    }

    public boolean nextBoolean() throws IOException {
        return mJsonReader.nextBoolean();
    }

    public Boolean nextBooleanOrNull() throws IOException {
        if (mJsonReader.peek() == JsonToken.NULL) {
            return null;
        }
        return mJsonReader.nextBoolean();
    }

    public void nextNull() throws IOException {
        mJsonReader.nextNull();
    }

    public double nextDouble() throws IOException {
        return mJsonReader.nextDouble();
    }

    public Double nextDoubleOrNull() throws IOException {
        if (mJsonReader.peek() == JsonToken.NULL) {
            return null;
        }
        return mJsonReader.nextDouble();
    }

    public long nextLong() throws IOException {
        return mJsonReader.nextLong();
    }

    public Long nextLongOrNull() throws IOException {
        if (mJsonReader.peek() == JsonToken.NULL) {
            return null;
        }
        return mJsonReader.nextLong();
    }

    public int nextInt() throws IOException {
        return mJsonReader.nextInt();
    }

    public Integer nextIntOrNull() throws IOException {
        if (mJsonReader.peek() == JsonToken.NULL) {
            return null;
        }
        return mJsonReader.nextInt();
    }

    public void close() throws IOException {
        mJsonReader.close();
    }

    public void skipValue() throws IOException {
        mJsonReader.skipValue();
    }

    public String toString() {
        return mJsonReader.toString();
    }
}