msgpack-python/java/src/main/java/org/msgpack/schema/DoubleSchema.java

//
// MessagePack for Java
//
// Copyright (C) 2009-2010 FURUHASHI Sadayuki
//
//    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 org.msgpack.schema;

import java.io.IOException;
import org.msgpack.*;

public class DoubleSchema extends Schema {
	public DoubleSchema() { }

	@Override
	public String getClassName() {
		return "Double";
	}

	@Override
	public String getExpression() {
		return "double";
	}

	@Override
	public void pack(Packer pk, Object obj) throws IOException {
		if(obj instanceof Double) {
			pk.packDouble((Double)obj);
		} else if(obj instanceof Float) {
			pk.packFloat((Float)obj);
		} else if(obj == null) {
			pk.packNil();
		} else {
			throw MessageTypeException.invalidConvert(obj, this);
		}
	}

	public static final double convertDouble(Object obj) throws MessageTypeException {
		if(obj instanceof Double) {
			return (Double)obj;
		} else if(obj instanceof Float) {
			return ((Float)obj).doubleValue();
		} else {
			throw new MessageTypeException();
		}
	}

	@Override
	public Object convert(Object obj) throws MessageTypeException {
		return convertDouble(obj);
	}

	@Override
	public Object createFromFloat(float v) {
		return (double)v;
	}

	@Override
	public Object createFromDouble(double v) {
		return (double)v;
	}
}