org.antlr.v4.parse.GrammarToken Maven / Gradle / Ivy
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The ANTLR 4 grammar compiler.
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/*
* Copyright (c) 2012 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD-3-Clause license that
* can be found in the LICENSE.txt file in the project root.
*/
package org.antlr.v4.parse;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.Token;
import org.antlr.v4.tool.Grammar;
/** A CommonToken that can also track it's original location,
* derived from options on the element ref like BEGIN<line=34,...>.
*/
public class GrammarToken extends CommonToken {
public Grammar g;
public int originalTokenIndex = -1;
public GrammarToken(Grammar g, Token oldToken) {
super(oldToken);
this.g = g;
}
@Override
public int getCharPositionInLine() {
if ( originalTokenIndex>=0 ) return g.originalTokenStream.get(originalTokenIndex).getCharPositionInLine();
return super.getCharPositionInLine();
}
@Override
public int getLine() {
if ( originalTokenIndex>=0 ) return g.originalTokenStream.get(originalTokenIndex).getLine();
return super.getLine();
}
@Override
public int getTokenIndex() {
return originalTokenIndex;
}
@Override
public int getStartIndex() {
if ( originalTokenIndex>=0 ) {
return ((CommonToken)g.originalTokenStream.get(originalTokenIndex)).getStartIndex();
}
return super.getStartIndex();
}
@Override
public int getStopIndex() {
int n = super.getStopIndex() - super.getStartIndex() + 1;
return getStartIndex() + n - 1;
}
@Override
public String toString() {
String channelStr = "";
if ( channel>0 ) {
channelStr=",channel="+channel;
}
String txt = getText();
if ( txt!=null ) {
txt = txt.replaceAll("\n","\\\\n");
txt = txt.replaceAll("\r","\\\\r");
txt = txt.replaceAll("\t","\\\\t");
}
else {
txt = "";
}
return "[@"+getTokenIndex()+","+getStartIndex()+":"+getStopIndex()+
"='"+txt+"',<"+getType()+">"+channelStr+","+getLine()+":"+getCharPositionInLine()+"]";
}
}