An internal error occurred ...

[edude]

Hello,

I get this exception
An internal error occurred during: "ANTLR Event Listener". For input string: "false"
when I type in AUTOMATIC in the Interpreter.

my gramatic looks like this:
_grammar TEST;

options
{
  language = Java;
}

@header
{
  package com.test.lr;
 
}

@lexer::header
{
  package com.test.lr;
}
 
module 
  :
      (
          'AUTOMATIC'
        | 'TAG' {System.out.println("hallo");}
      )?
  ;

WS  : (' '|'\r'|'\t'|'\u000C'|'\n') {$channel=HIDDEN;}
    ;_

I am using ANTLR3.4 and ANTLR IDE 2.1.2

Can anyone help me? thank you.

edude

[Anonymous]

Hi,

I am getting same error:

I am using Antlr IDE 2.1.2 on eclipse Indigo and Antlr 3.4.

Can anyone help?

Thanks,
Jay

[Anonymous]

Here is stack trace:

java.lang.NumberFormatException: For input string: "false"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:449)
at java.lang.Integer.parseInt(Integer.java:499)
at org.deved.antlride.debug.model.event.AntlrDebugDecisionEvent.<init>(AntlrDebugDecisionEvent.java:22)
at org.deved.antlride.debug.model.event.AntlrDebugEventFactory.createFromString(AntlrDebugEventFactory.java:58)
at org.deved.antlride.jdt.launch.AntlrJavaLauncher$1.run(AntlrJavaLauncher.java:193)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Thanks,
Jay

[edude]

short question:  how did you get the stack trace?

[edude]

btw I think it works in ANTLRWorks 1.4.3

[Anonymous]

In Eclipse Menu, Window->Show View->Error Log.
In Error Log view  (possibly in bottom), you will get message/plugin/Date as column headers in a table. Dbl Click on your error.

Thanks,
Jay

[Anonymous]

My grammar also works, I think issue is something else…

[edude]

ah. thank you for the Error Log hint!

[Anonymous]

I have the same problem.

message
An internal error occurred during: "ANTLR Event Listener".

Exception Stack Trace
java.lang.NumberFormatException: For input string: "false"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:449)
at java.lang.Integer.parseInt(Integer.java:499)
at org.deved.antlride.debug.model.event.AntlrDebugDecisionEvent.<init>(AntlrDebugDecisionEvent.java:22)
at org.deved.antlride.debug.model.event.AntlrDebugEventFactory.createFromString(AntlrDebugEventFactory.java:58)
at org.deved.antlride.jdt.launch.AntlrJavaLauncher$1.run(AntlrJavaLauncher.java:193)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Session Data

eclipse.buildId=Powered by Pulse
java.version=1.6.0_29
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments:  -keyring /Users/lscoughlin/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -keyring /Users/lscoughlin/.eclipse_keyring -showlocation

[Christian Hinrichs]

I get the same error if I try to run certain grammars in the interpreter using the "Run (Java)" option instead of just "Run". It seems to be a problem of quantifiers. Consider the following minimal grammar example:

grammar Sample;
options {
  language = Java;
}
rule: CHAR;
CHAR
    :   .
    ;

This grammar works. But as soon as on extends the parser rule with a quantifier (I tried "+", "?" and "*"), it crashes with the above reported Exception:

grammar Sample;
options {
  language = Java;
}
rule: CHAR?;
CHAR
    :   .
    ;

Tested in Eclipse Indigo.

[Christian Hinrichs]

*push*

@dev:
Any progress here? Or, at least, any cue how to fix this on our own? I would really like to use this release in class in June, so please give us a hint…