[antlr-interest] C# Question: cannot convert from 'method group'
to'antlr.collections.AST
Micheal J
open.zone at virgin.net
Thu Mar 2 06:30:23 PST 2006
Either label ID and componentSelection (i.e. label:ruleOrTerminal) and use
those labels or, use the ## notation. The componentSelection in the
generated code is a method not an AST instance.
Micheal
-----Original Message-----
From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of Vladimir S.
Sent: 02 March 2006 02:47
To: antlr-interest at antlr.org
Subject: [antlr-interest] C# Question: cannot convert from 'method group'
to'antlr.collections.AST
Dear Group,
I am generating C# code and I am using C#.NET 2005 express.
ANTLR does NOT complain about the syntax, but C# seems to when I compile the
code:
The grammar in question is:
variable : ID
(componentSelection )?
{ #variable=
#(
[VARIABLE,"VARIABLE"],
ID,
componentSelection
);
}
;
In this case componentSelection is another rule in the grammar; From this
rule I wanted to generate a node with root node being "VARIABLE" first child
being the ID, and the second child being the tree of the result of expanding
the componentSelection rule. It seems like when I am using a NON terminals
in this context, I get this error:
I keep getting this error:
Error 4 Argument '3': cannot convert from 'method group' to
'antlr.collections.AST'
C:\=PROGRAMMING=\=Compilers=\ParserFormV03\Parser\ParserCore.cs 1801
79 ParseFormV02
This is the C# code that was generated from that grammar:
variable_AST=
(AST)
astFactory.make(astFactory.create(VARIABLE,"VARIABLE"), tmp93_AST,
componentSelection);
Thanks for all your help,
Vladimir
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