scale.clef.stmt
Class RepeatUntilLoopStmt

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.stmt.Statement
              scale.clef.stmt.LoopStmt
                  scale.clef.stmt.TestLoopStmt
                      scale.clef.stmt.RepeatUntilLoopStmt

All Implemented Interfaces:

AnnotationInterface, DisplayNode

public class RepeatUntilLoopStmt
extends TestLoopStmt

This class represents the repeat-until loop statement.

$Id: RepeatUntilLoopStmt.java,v 1.20 2005-02-07 21:28:10 burrill Exp $

Copyright 2005 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

Constructor Summary

RepeatUntilLoopStmt(Statement stmt, Expression exp)

Method Summary

void	visit(Predicate p) Process a node by calling its associated routine.

Methods inherited from class scale.clef.stmt.TestLoopStmt

getChild, getExpr, numChildren, setExpr

Methods inherited from class scale.clef.stmt.LoopStmt

containsLoopStmt, getStmt, hasReturnStmt, numTotalStmts, setStmt

Methods inherited from class scale.clef.stmt.Statement

dump, getDisplayColorHint, getDisplayLabel, getDisplayShapeHint, getPragma, getSourceLineNumber, setPragma, setSourceLineNumber

Methods inherited from class scale.clef.Node

getCoreType, getDecl, getType, setAnnotationLevel, setReportLevel, toString, toString, toStringChildren, toStringSpecial

Methods inherited from class scale.common.Root

addAnnotation, allAnnotations, allMatchingAnnotations, getAnnotation, getDisplayName, getDisplayString, getNodeCount, getNodeID, hasAnnotation, hasEqualAnnotation, hashCode, removeAnnotation, removeAnnotations, toStringAnnotations, toStringClass, trace, trace, trace

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RepeatUntilLoopStmt

public RepeatUntilLoopStmt(Statement stmt,
                           Expression exp)

Method Detail

visit

public void visit(Predicate p)

Description copied from class: Node

Process a node by calling its associated routine. See the "visitor" design pattern in Design Patterns: Elements of Reusable Object-Oriented Software by E. Gamma, et al, Addison Wesley, ISBN 0-201-63361-2.

Each class has a visit(Predicate p) method. For example, in class ABC:

   public void visit(Predicate p)
   {
     p.visitABC(this);
   }
 

and the class that implements Predicate has a method

   public void visitABC(Node n)
   {
     ABC a = (ABC) n;
     ...
   }
 

Thus, the class that implements Predicate can call

   n.visit(this);
 

where n is a Node sub-class without determining which specific sub-class n is. The visit pattern basically avoids implementing a large switch statement or defining different methods in each class for some purpose.

Overrides:

visit in class TestLoopStmt

See Also:

Predicate