/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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.google.dart.tools.search.internal.core.text;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
/**
* Adapting a document to a CharSequence
*/
public class DocumentCharSequence implements CharSequence {
private final IDocument fDocument;
/**
* @param document The document to wrap
*/
public DocumentCharSequence(IDocument document) {
fDocument = document;
}
public int length() {
return fDocument.getLength();
}
public char charAt(int index) {
try {
return fDocument.getChar(index);
} catch (BadLocationException e) {
throw new IndexOutOfBoundsException();
}
}
public CharSequence subSequence(int start, int end) {
try {
return fDocument.get(start, end - start);
} catch (BadLocationException e) {
throw new IndexOutOfBoundsException();
}
}
}