[antlr-interest] Interp Class

[Fırat KÜÇÜK]

the problem is not shape of printing.

The problem is that. Interp system does not recognize tree as if treeparser.

How can i get treeparser output without generating any .java file?

2007/3/30, mblp at mega.ist.utl.pt <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
> >
>


-- 
Öğr. Gör. Fırat KÜÇÜK
ADAMYO Distance Learning
SAKARYA University / TURKEY