com.getperka.flatpack.codexes.CharacterCodex Maven / Gradle / Ivy
package com.getperka.flatpack.codexes;
/*
* #%L
* FlatPack serialization code
* %%
* Copyright (C) 2012 Perka Inc.
* %%
* 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.
* #L%
*/
import com.getperka.flatpack.ext.DeserializationContext;
import com.getperka.flatpack.ext.JsonKind;
import com.getperka.flatpack.ext.SerializationContext;
import com.getperka.flatpack.ext.Type;
import com.getperka.flatpack.ext.TypeHint;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
/**
* Converts chars to JSON strings. Numeric values will be treated as a BMP code point.
*/
public class CharacterCodex extends ValueCodex {
protected CharacterCodex() {}
@Override
public Type describe() {
return new Type.Builder()
.withJsonKind(JsonKind.STRING)
.withTypeHint(TypeHint.create(Character.class))
.build();
}
@Override
public Character readNotNull(JsonElement element, DeserializationContext context)
throws Exception {
if (element.isJsonPrimitive()) {
JsonPrimitive primitive = element.getAsJsonPrimitive();
// Treat a number as a BMP code point
if (primitive.isNumber()) {
return (char) primitive.getAsInt();
} else {
return primitive.getAsCharacter();
}
}
throw new IllegalArgumentException("Cannot convert " + element.toString() + " to a char");
}
@Override
public void writeNotNull(Character object, SerializationContext context) throws Exception {
context.getWriter().value(object.toString());
}
}