[antlr-interest] Expr example in Wiki compile error Eclipseusing ANTLRworks

[Foolish Ewe]

Hello All:

Thanks Ter, my initial thought was I had made some sort of error, but was 
just too dense to see it.
Given the amount of improved functionality the ANTLR folks are introducing 
in ANTLR3
and ANTLRworks, I am actually pleased with how robust the environment is and 
how fast
fixes are applied in when something is discovered.

I have an additional question about the example grammar, the lexer and 
perhaps Eclipse itself.
The example, Expr appears to hang when I run it in Eclipse, and I've added 
debugging
output and actions to all  non terminals (Please see attached source for 
details).
In the trace for Expr in the wiki, it appears to read until it reaches EOF, 
I've tried entering
^D (control D) into the Eclipse console window but that doesn't seem to 
trigger the EOF
condition, nor do I see any of the expected output.  Running it in the 
debugger seems to indicate
that the ANTLRInputStream constructor does not terminate.  Why is that?

My questions are:
1) Have I somehow screwed things up that the symptoms I'm seeing are my own 
fault?
2) In Eclipse, is it possible to pass an EOF to System.in? (not an Antlr 
question, but maybe I'll
    get lucky).
3) If I want to limit buffering to one line of input at a time, is there 
some other input class
    I should be using in ANTLR.

Thanks:

Bill M.

>From: Terence Parr <parrt at cs.usfca.edu>
>To: ANTLR List <antlr-interest at antlr.org>
>Subject: Re: [antlr-interest] Expr example in Wiki compile error 
>Eclipseusing ANTLRworks 1.0b8, ANTLR 3.0b5
>Date: Sat, 16 Dec 2006 11:08:44 -0800
>
>Hi Bill...sorry about that...try grabbing latest from depot browser,  fixed 
>after 3.0b5.
>
>I hope to do another release soon.
>
>Ter
>On Dec 16, 2006, at 10:52 AM, Foolish Ewe wrote:
>
>>I've tried getting some my stuff working ANTLR source code into  eclipse, 
>>by
>>adding the ANTLRworks 1.0b8 jar to my class path, and using  ANTLRworks to 
>>generate
>>the Java source and compile it in the Eclipse framework.
>>
>>The generated code had compiler errors, (as did my much larger  example) 
>>for the following
>>ANTLR source line:
>>    |   '(' expr ')' {$value = $expr.value;}
>>
>>The action $value=$expr.value; generates the following Java source  (which 
>>does not compile):
>>
>>                    value = $expr.value;
>>
>>Which does not compile.
>>
>>I've noticed in my own source that I've had to create attribute  labels in 
>>order
>>to get compilable code out of ANTLR1.0b5 (via ANTRLworks 1.0b8),
>>so changing the ANTLR source to read:
>>
>>    |   '(' myexpr=expr ')' {$value = $myexpr.value;}
>>
>>generates the following Java source (which does compile):
>>
>>                    value = myexpr;
>>
>>Does anyone have any idea why the published example in the wiki  isn't 
>>building
>>in this environment?
>>
>>Regards:
>>
>>Bill M.
>>
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>

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