/*
* Copyright 2013 Nicolas Morel
*
* 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.github.nmorel.gwtjackson.client.deser;
import com.github.nmorel.gwtjackson.client.JsonDeserializationContext;
import com.github.nmorel.gwtjackson.client.JsonDeserializer;
import com.github.nmorel.gwtjackson.client.JsonDeserializerParameters;
import com.github.nmorel.gwtjackson.client.stream.JsonReader;
import com.github.nmorel.gwtjackson.client.stream.JsonToken;
/**
* Default {@link JsonDeserializer} implementation for {@link Boolean}.
*
* @author Nicolas Morel
*/
public class BooleanJsonDeserializer extends JsonDeserializer<Boolean> {
private static final BooleanJsonDeserializer INSTANCE = new BooleanJsonDeserializer();
/**
* @return an instance of {@link BooleanJsonDeserializer}
*/
public static BooleanJsonDeserializer getInstance() {
return INSTANCE;
}
private BooleanJsonDeserializer() { }
@Override
public Boolean doDeserialize( JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params ) {
JsonToken token = reader.peek();
if ( JsonToken.BOOLEAN.equals( token ) ) {
return reader.nextBoolean();
} else if ( JsonToken.STRING.equals( token ) ) {
return Boolean.valueOf( reader.nextString() );
} else if ( JsonToken.NUMBER.equals( token ) ) {
return reader.nextInt() == 1;
} else {
return null;
}
}
}