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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 the original author or authors.
*
* 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.codehaus.groovy.runtime.typehandling;
public class IntegerCache {
private IntegerCache(){}
static final Integer CACHE[] = new Integer[-(-128) + 127 + 1];
static {
for(int i = 0; i < CACHE.length; i++)
CACHE[i] = new Integer(i - 128);
}
public static Integer integerValue(int i) {
final int offset = 128;
if (i >= -128 && i <= 127) { // must cache
return CACHE[i + offset];
}
return new Integer(i);
}
}