[antlr-interest] Interp Class

[mblp at mega.ist.utl.pt]

never used the Interp, I print my trees with something like this
(taken from antlr docs)

	public static void printTree(CommonTree tree, int indent) {
		if (tree != null) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < indent; i++)
				sb = sb.append("   ");
			for (int i = 0; i < tree.getChildCount(); i++) {
				System.out.println(sb.toString() + tree.getChild(i).toString());
				printTree((CommonTree) tree.getChild(i), indent + 1);
			}
		}
	}

Also, the docs for antlr v3 use the '^^' operator
(http://www.antlr.org/wiki/display/ANTLR3/Tree+construction) :

additiveExpression
	:	multiplicativeExpression (('+'^^ | '-'^^) multiplicativeExpression)*
	;

Hope it helps

On 3/30/07, Fırat KÜÇÜK <firatkucuk at gmail.com> wrote:
> any idea?
>
>
> 2007/3/29, Fırat KÜÇÜK <firatkucuk at gmail.com>:
> > Hi,
> >
> > i send a sample post to antlr-dev list. But i didn't receive a response.
> >
> > -------------------------------------------
> >
> > There is an Interp class in org.antlr.tool package.
> > It generates an AST according to the parser grammer.
> > But ignores automatic tree generation statements.
> >
> > my sample calculator grammar is:
> >
> > start                   :    (operationSecond (EOL operationSecond)*
> EOL?)?;
> > operationSecond  :    operationFirst ((PLUS^ | MINUS^) operationFirst)* ;
> > operationFirst      :    NUMBER ((ASTERISK^ | SLASH^) NUMBER)*;
> >
> > for instance : 1 + 56 + 3 * 2
> >
> > Interp generates:
> >
> > (<grammar HesapMakinesi> (start (operationSecond (operationFirst 1) +
> > (operationFirst 56) + (operationFirst 3 * 2))))
> >
> > but i want:
> >
> > (+ (+ 1 56) (* 3 2))
> >
> > any solution?
> >
> >
>
>
> --
> Öğr. Gör. Fırat KÜÇÜK
> ADAMYO Distance Learning
> SAKARYA University / TURKEY
>