antlr.NoViableAltException Maven / Gradle / Ivy
package antlr;
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.cs.usfca.edu
* Software rights: http://www.antlr.org/license.html
*
* $Id: //depot/code/org.antlr/release/antlr-2.7.7/antlr/NoViableAltException.java#2 $
*/
import antlr.collections.AST;
public class NoViableAltException extends RecognitionException {
public Token token;
public AST node; // handles parsing and treeparsing
public NoViableAltException(AST t) {
super("NoViableAlt", "", t.getLine(), t.getColumn());
node = t;
}
public NoViableAltException(Token t, String fileName_) {
super("NoViableAlt", fileName_, t.getLine(), t.getColumn());
token = t;
}
/**
* Returns a clean error message (no line number/column information)
*/
public String getMessage() {
if (token != null) {
return "unexpected token: " + token.getText();
}
// must a tree parser error if token==null
if (node == TreeParser.ASTNULL) {
return "unexpected end of subtree";
}
return "unexpected AST node: " + node.toString();
}
}