[antlr-interest] Problem when generating ANTLRv3.g for C Sharp target?

[Sam Harwell]

Hi Mari,

I've never used ANTLRv3.g, so it may have errors and it's probably not
up-to-date with the latest ANTLR.g3 used in the C# port of the tool. The
CSharp3 target doesn't emit a "using System;" line, so you'll need to do one
of the following:

1. Change the definition of name in the scope{...} block of the rule 'rule'
from String to string.

2. Add the header block:

@parser::header {
using System;
}

Sam

-----Original Message-----
From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of Mari Matinlassi
Sent: Tuesday, August 09, 2011 4:31 AM
To: antlr-interest at antlr.org
Subject: [antlr-interest] Problem when generating ANTLRv3.g for C Sharp
target?

Dear fellows,

 

Our research project wants to create meta-language for defining domain
specific languages. And, we have chosen to take ANTLR as a tool and
ANTLRv3.g as a starting point for our meta-language.

 

Therefore, I want to generate ANTLRv3Parser.cs and ANTLRv3Lexer.cs and build
them in Visual Studio (using C# target). However, I have a build error as
below:

"Error    1              The type or namespace name 'String' could not be
found (are you missing a using directive or an assembly reference?)
C:\VisualStudioProject\Testi\Testi\obj\Debug\ANTLRv3Parser.cs
2151       10           Testi"

 

And, indeed, there is a line in ANTLRv3Parser.cs as follows:

 

protected sealed partial class rule_scope

       {

              public String name;

 

              public rule_scope(ANTLRv3Parser grammar) { OnCreated(grammar);
}

              partial void OnCreated(ANTLRv3Parser grammar);

       }

 

Any idea what I am doing wrong?

 

I have followed this document (http://www.antlr.org/download/CSharp3.pdf) to
install and configure my Visual Studio project to work with Antlr.

 

This works fine, thanks for excellent guide! I get a simple grammar (such as
one below) to generate lexer and parser and compile them successfully.

Example grammar:

-----------------------------------Start of
T.g-----------------------------------------------------

grammar T;

 

options

{

       language=CSharp3;

       TokenLabelType=CommonToken;

       output=AST;

       ASTLabelType=CommonTree;

}

 

 

@lexer::namespace {ANTLRlanguage}

@parser::namespace {ANTLRlanguage}

 

public compileUnit 

       : ('x')+

       ;

 

 

IDENTIFIER

       :      ('a'..'z' | 'A'..'Z' |'_')('a'..'z' | 'A'..'Z' |'0'..'9'|'_')*

       ;

-----------------------------------End of
T.g--------------------------------------------------

 

Thanks for your help in advance,

 

Mari


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