/*
* 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.engine.scanner;
/**
* Instances of the class {@code BeginTokenWithComment} represent a begin token that is preceded by
* comments.
*
* @coverage dart.engine.parser
*/
public class BeginTokenWithComment extends BeginToken {
/**
* The first comment in the list of comments that precede this token.
*/
private Token precedingComment;
/**
* Initialize a newly created token to have the given type and offset and to be preceded by the
* comments reachable from the given comment.
*
* @param type the type of the token
* @param offset the offset from the beginning of the file to the first character in the token
* @param precedingComment the first comment in the list of comments that precede this token
*/
public BeginTokenWithComment(TokenType type, int offset, Token precedingComment) {
super(type, offset);
this.precedingComment = precedingComment;
}
@Override
public Token copy() {
return new BeginTokenWithComment(getType(), getOffset(), copyComments(precedingComment));
}
@Override
public Token getPrecedingComments() {
return precedingComment;
}
@Override
protected void applyDelta(int delta) {
super.applyDelta(delta);
Token token = precedingComment;
while (token != null) {
token.applyDelta(delta);
token = token.getNext();
}
}
}