/*
* Copyright 2014 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.array.dd;
import java.util.ArrayList;
import java.util.List;
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.deser.CharacterJsonDeserializer;
import com.github.nmorel.gwtjackson.client.stream.JsonReader;
import com.github.nmorel.gwtjackson.client.stream.JsonToken;
/**
* Default {@link JsonDeserializer} implementation for 2D array of char.
*
* @author Nicolas Morel
* @version $Id: $
*/
public class PrimitiveCharacterArray2dJsonDeserializer extends AbstractArray2dJsonDeserializer<char[][]> {
private static final PrimitiveCharacterArray2dJsonDeserializer INSTANCE = new PrimitiveCharacterArray2dJsonDeserializer();
/**
* <p>getInstance</p>
*
* @return an instance of {@link PrimitiveCharacterArray2dJsonDeserializer}
*/
public static PrimitiveCharacterArray2dJsonDeserializer getInstance() {
return INSTANCE;
}
private PrimitiveCharacterArray2dJsonDeserializer() { }
/** {@inheritDoc} */
@Override
public char[][] doDeserialize( JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params ) {
char[][] result;
reader.beginArray();
JsonToken token = reader.peek();
if ( JsonToken.END_ARRAY == token ) {
// empty array
result = new char[0][0];
} else if ( JsonToken.STRING == token ) {
// char[] are encoded as String
List<char[]> list = new ArrayList<char[]>();
int size = 0;
while ( JsonToken.END_ARRAY != token ) {
char[] decoded = reader.nextString().toCharArray();
size = Math.max( size, decoded.length );
list.add( decoded );
token = reader.peek();
}
result = new char[list.size()][size];
int i = 0;
for ( char[] value : list ) {
if ( null != value ) {
result[i] = value;
}
i++;
}
} else {
List<List<Character>> list = doDeserializeIntoList( reader, ctx, CharacterJsonDeserializer.getInstance(), params, token );
List<Character> firstList = list.get( 0 );
if ( firstList.isEmpty() ) {
result = new char[list.size()][0];
} else {
result = new char[list.size()][firstList.size()];
int i = 0;
int j;
for ( List<Character> innerList : list ) {
j = 0;
for ( Character value : innerList ) {
if ( null != value ) {
result[i][j] = value;
}
j++;
}
i++;
}
}
}
reader.endArray();
return result;
}
}