/* // $Id: //guest/julian_hyde/saffron/src/main/saffron/opt/VisitorRelVisitor.java#1 $ // Saffron preprocessor and data engine // Copyright (C) 2002 Julian Hyde <julian.hyde@mail.com> // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. // // See the COPYING file located in the top-level-directory of // the archive of this library for complete text of license. */ package saffron.opt; import openjava.mop.Toolbox; import openjava.ptree.Expression; import openjava.ptree.ParseTreeException; import openjava.ptree.util.ParseTreeVisitor; import saffron.rel.Rel; import saffron.util.RelVisitor; /** * Walks over a tree of {@link saffron.rel.Rel}s, walking a {@link ParseTreeVisitor} * over every expression in that tree. * * @author jhyde * @since 22 October, 2001 * @version $Id: //guest/julian_hyde/saffron/src/main/saffron/opt/VisitorRelVisitor.java#1 $ **/ public class VisitorRelVisitor extends RelVisitor { ParseTreeVisitor visitor; public VisitorRelVisitor(ParseTreeVisitor visitor) { this.visitor = visitor; } // implement RelVisitor public void visit(Rel p, int ordinal, Rel parent) { Expression[] childExps = p.getChildExps(); try { for (int i = 0; i < childExps.length; i++) { childExps[i].accept(visitor); } } catch (ParseTreeException e) { throw Toolbox.newInternal( e, "while visiting expression " + p); } p.childrenAccept(this); } } // End VisitorRelVisitor.java
# | Change | User | Description | Committed | |
---|---|---|---|---|---|
#1 | 1467 | Julian Hyde |
saffron: First saffron check-in; incorporate my changes to openjava. |