[antlr-interest] Combining a tree with the Parser

[Jim Idle]

On Tue, 2008-11-25 at 13:35 +0100, lists at krevsbech.dk wrote:

> Hey
> I am having a rather hard time figuring our how to let the tree find my
> parser.
> I use the ANTLR work and have tree files in the following way:
> FooLexer (lexer grammar FooLexer)
> FooParser (parser grammar FooParser)
> FooTree (tree grammar FooTree)
> 
> In my parser I have:
> tokenVocab = FooLexer;
> 
> In my tree I have:
> tokenVocab = FooParser;
> 
> But here things goes wrong, when I use the ANTLR debugger on the Tree file
> it complains and gives the following output:
> error cannot read: "path"/FooParserLexer.java
> error cannot read: "path"/FooParserParser.java
> 
> and no wonder it can't because the files are named FooLexer.java and
> FooParser.java
> Can anyone tell me what I have done wrong ?


Assuming that you are using the latest release of ANTLRWorks (check
that), check the following:

1) Is your ANTLRWorks working directory set to somewhere sensible, that
you can read and write to etc (general permissions);
2) Filenames are correct: FooLexer.g contains lexer grammar FooLexer;
FooParser.g contains parser grammar FooParser;
3) The generated java files are in the correct place.
4) You are debugging the tree grammar remotely (you cannot debug tree
grammars locally, at least not at the moment - generate with -debug, run
the program, connect the remote debugger to it);

If the suffixes Lexer and Parser are being appended, it implies that you
have 'grammar FooParser' rather than 'parser grammar FooParser'. Could
be a bug, but it is one I have never come across myself if it is. My
feeling is that you are are trying to debug the tree grammar locally.

Jim

> 
> Kind regards and thanks
> Kasper Revsbech
> 
> 
> 
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