com.lyncode.jtwig.functions.internal.math.Abs Maven / Gradle / Ivy
/**
* Copyright 2012 Lyncode
*
* 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.lyncode.jtwig.functions.internal.math;
import com.lyncode.jtwig.functions.Function;
import com.lyncode.jtwig.functions.exceptions.FunctionException;
import static com.lyncode.jtwig.functions.util.Requirements.requires;
import static java.lang.Math.abs;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.instanceOf;
public class Abs implements Function {
@Override
public Object execute(Object... arguments) throws FunctionException {
requires(arguments)
.withNumberOfArguments(equalTo(1))
.withArgument(0, instanceOf(Number.class));
if (arguments[0] instanceof Double)
return abs((Double) arguments[0]);
else if (arguments[0] instanceof Float)
return abs((Float) arguments[0]);
else if (arguments[0] instanceof Integer)
return abs((Integer) arguments[0]);
else if (arguments[0] instanceof Long)
return abs((Long) arguments[0]);
else
return arguments[0];
}
}