[antlr-interest] CSharp2 code generation bug for ANTLRWorks 1.2.3 with -debug
Johannes Luber
JALuber at gmx.de
Mon Jun 15 05:41:33 PDT 2009
>
> The following grammar produces uncompilable code when generated from
> ANTLRWorks using -debug in the ANTLR options. I'm not sure which version of
> ANTLR is being used by ANTLRWorks. If it matters, I have ANTLR 3.1.3 on my
> machine.
ANTLRworks doesn't use ANTLR 3.1.3 yet. Please use the commandline tool to create debug parsers until a new version is published.
Johannes
>
> ====
>
> grammar EdifactDelfor;
>
> options {
> language = 'CSharp2' ;
> }
>
> tokens {
> }
>
> file : contents+ EOF ;
>
> contents : TEXT
> | SEP
> | WS
> | CSEP
> | EOL
> ;
> EOL: '\'';
> SEP: '+';
> CSEP: ':';
> TEXT: ('a'..'z'|'A'..'Z'|'0'..'9'|' '|'-'|','|'.'|'/'|'?')+ ;
> WS: ('\r'? '\n')+ ;
>
> ====
>
> Here is the culprit code that was generated (in the file() method):
> default:
> if (cnt1 >= 1) goto loop1;
> EarlyExitException eee1 =
> new EarlyExitException(1, input);
> dbg.RecognitionException(eee); // Note the missing '1': should be
> eee1
>
> throw eee1;
>
> When I manually change the reference to eee1, the thing compiles.
>
> This bug does not appear when -debug is turned off.
>
> Rob
>
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