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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.text;
/**
* A start- and end- offset in an underlying String.
*
* @author hakonhall
*/
public class CursorRange {
private final Cursor start;
private final Cursor end;
@SuppressWarnings("StringEquality")
public CursorRange(Cursor start, Cursor end) {
if (start.fullText() != end.fullText()) {
throw new IllegalArgumentException("start and end points to different texts");
}
if (start.offset() > end.offset()) {
throw new IllegalArgumentException("start offset " + start.offset() +
" is beyond end offset " + end.offset());
}
this.start = new Cursor(start);
this.end = new Cursor(end);
}
public CursorRange(CursorRange that) {
this.start = new Cursor(that.start);
this.end = new Cursor(that.end);
}
public Cursor start() { return new Cursor(start); }
public Cursor end() { return new Cursor(end); }
public int length() { return end.offset() - start.offset(); }
public String string() { return start.fullText().substring(start.offset(), end.offset()); }
public void appendTo(StringBuilder buffer) { buffer.append(start.fullText(), start.offset(), end.offset()); }
}
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