[antlr-interest] Why does ASTFactory.create(Token tok) creates new
token instead of using token passed as a parameter
Vladmir Kvashin
Vladimir.Kvashin at Sun.COM
Mon Mar 20 21:15:47 PST 2006
Hi,
Could anybody answer my, why TokenFactory behaves in a following way.
In method create(Token tok) it creates a new token and then just copies
(via initialize() method) values from the token that is passes as a
parameter.
public AST create(Token tok) {
AST t = create(tok.getType());
if ( t!=null ) {
t.initialize(tok);
}
return t;
}
My idea is to make my own extension of AstFactory, which would hold the
initial token instead of creation new one. Are some drawbacks of such
decision? I don't see any.
If there are no, then probably it's worth to make this behaviour default?
Thanks,
Vladimir
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