forgetest1
/
antlr
forked from jasder/antlr
1
0
Fork 0
Code Issues Pull Requests 1 Releases Wiki Activity

Include input character in LexerNoViableAltException.toString()

This commit is contained in:
Sam Harwell 2012-02-15 12:02:44 -06:00
parent bc87562aff
commit 0bbb7101ba
1 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
runtime/Java/src/org/antlr/v4/runtime/LexerNoViableAltException.java
View File

@ -30,6 +30,7 @@
package org.antlr.v4.runtime;
import org.antlr.v4.runtime.atn.ATNConfigSet;
import org.antlr.v4.runtime.misc.Utils;
public class LexerNoViableAltException extends RecognitionException {
/** Matching attempted at what input index? */
@ -47,7 +48,19 @@ public class LexerNoViableAltException extends RecognitionException {
this.deadEndConfigs = deadEndConfigs;
}
@Override
public CharStream getInputStream() {
return (CharStream)super.getInputStream();
}
@Override
public String toString() {
return "NoViableAltException('')";
String symbol = "";
if (startIndex >= 0 && startIndex < input.size()) {
symbol = getInputStream().substring(startIndex, startIndex);
symbol = Utils.escapeWhitespace(symbol, false);
}
return "NoViableAltException('" + symbol + "')";
}
}