blob: 2e90b2e555f5a8ff772ed6c2618c92cac63ab664 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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 org.codehaus.groovy.antlr;
import antlr.LexerSharedInputState;
/**
* GRECLIPSE-805 Support for unicode escape sequences
* @author Andrew Eisenberg
*/
public class UnicodeLexerSharedInputState extends LexerSharedInputState {
private final UnicodeEscapingReader escapingReader;
private int prevUnescape;
public UnicodeLexerSharedInputState(UnicodeEscapingReader in) {
super(in);
escapingReader = in;
}
@Override
public int getColumn() {
prevUnescape = escapingReader.getUnescapedUnicodeColumnCount();
return super.getColumn() + prevUnescape;
}
@Override
public int getTokenStartColumn() {
if (line == tokenStartLine) {
return super.getTokenStartColumn() + escapingReader.getUnescapedUnicodeColumnCount();
} else {
return super.getTokenStartColumn() + prevUnescape;
}
}
}