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/*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
* that is described in this document. In particular, and without limitation, these intellectual property
* rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
* more additional patents or pending patent applications in the U.S. and in other countries.
*
* U.S. Government Rights - Commercial software. Government users are subject to the Sun
* Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
* supplements.
*
* Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
* registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
* are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
* U.S. and other countries.
*
* UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
* Company, Ltd.
*/
package com.sun.max.util;
/**
* A {@code Range} denotes all the integer values between a {@linkplain #start() start} (inclusive) and
* {@linkplain #end() end} (exclusive) value.
*
* @author Doug Simon
*/
public class Range {
private final int start;
private final int end;
public Range(int start) {
this(start, start + 1);
}
/**
* Creates an object representing values in the range {@code [start .. end)}.
*
* @param start
* the lowest value in the range
* @param end
* the value one greater than the highest value in the range
*/
public Range(int start, int end) {
assert end >= start;
this.start = start;
this.end = end;
assert length() >= 0;
}
/**
* Gets the lowest value in this range.
* @return
*/
public int start() {
return start;
}
/**
* Gets the number of values covered by this range.
*/
public long length() {
// This cast and the long return type prevents integer overflow
return ((long) end) - start;
}
/**
* Gets the value one greater than the highest value in this range.
*/
public int end() {
return end;
}
public boolean contains(long value) {
return value >= start && value < end;
}
@Override
public String toString() {
return "[" + start() + '-' + (end() - 1) + ']';
}
}