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/*******************************************************************************
* Copyright (c) 2008, 2011 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.common.core.utility;
import org.eclipse.jpt.common.core.internal.utility.SimpleTextRange;
import org.eclipse.jpt.common.utility.internal.StringTools;
/**
* Partial implementation of text range.
*
* Provisional API: This class is part of an interim API that is still
* under development and expected to change significantly before reaching
* stability. It is available at this early stage to solicit feedback from
* pioneering adopters on the understanding that any code that uses this API
* will almost certainly be broken (repeatedly) as the API evolves.
*
* @version 2.0
* @since 2.0
*/
public abstract class AbstractTextRange
implements TextRange
{
protected AbstractTextRange() {
super();
}
public boolean includes(int index) {
return (this.getOffset() <= index) && (index < this.getEnd());
}
public boolean touches(int index) {
return (this.getOffset() <= index) && (index <= this.getEnd());
}
/**
* The end offset is <em>exclusive</em>, i.e. the element at the end offset
* is not included in the range.
*/
protected int getEnd() {
return this.getOffset() + this.getLength();
}
public TextRange buildTextRange(int offset, int length, int lineNumber) {
return ((offset == this.getOffset()) &&
(length == this.getLength()) &&
(lineNumber == this.getLineNumber())) ?
this :
new SimpleTextRange(offset, length, lineNumber);
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if ( ! (o instanceof TextRange)) {
return false;
}
TextRange other = (TextRange) o;
return (other.getOffset() == this.getOffset())
&& (other.getLength() == this.getLength())
&& (other.getLineNumber() == this.getLineNumber());
}
@Override
public int hashCode() {
return this.getOffset() ^ this.getLength() ^ this.getLineNumber();
}
@Override
public String toString() {
String start = String.valueOf(this.getOffset());
String end = String.valueOf(this.getEnd());
String line = String.valueOf(this.getLineNumber());
return StringTools.buildToStringFor(this, start + ", " + end + " [" + line + ']'); //$NON-NLS-1$ //$NON-NLS-2$
}
}
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