/*
* 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 BeginToken} represent the opening half of a grouping pair of
* tokens. This is used for curly brackets ('{'), parentheses ('('), and square brackets ('[').
*
* @coverage dart.engine.parser
*/
public class BeginToken extends Token {
/**
* The token that corresponds to this token.
*/
private Token endToken;
/**
* Initialize a newly created token representing the opening half of a grouping pair of tokens.
*
* @param type the type of the token
* @param offset the offset from the beginning of the file to the first character in the token
*/
public BeginToken(TokenType type, int offset) {
super(type, offset);
assert (type == TokenType.OPEN_CURLY_BRACKET || type == TokenType.OPEN_PAREN
|| type == TokenType.OPEN_SQUARE_BRACKET || type == TokenType.STRING_INTERPOLATION_EXPRESSION);
}
@Override
public Token copy() {
return new BeginToken(getType(), getOffset());
}
/**
* Return the token that corresponds to this token.
*
* @return the token that corresponds to this token
*/
public Token getEndToken() {
return endToken;
}
/**
* Set the token that corresponds to this token to the given token.
*
* @param token the token that corresponds to this token
*/
public void setEndToken(Token token) {
this.endToken = token;
}
}