scale.clef.stmt
Class ComputedGotoStmt

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.stmt.Statement
              scale.clef.stmt.MultiBranchStmt
                  scale.clef.stmt.ComputedGotoStmt

All Implemented Interfaces:

AnnotationInterface, DisplayNode

public class ComputedGotoStmt
extends MultiBranchStmt

This class represents the Fortran 77 computed goto statement.

$Id: ComputedGotoStmt.java,v 1.22 2006-03-31 23:29:37 burrill Exp $

Copyright 2008 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

Constructor Summary

ComputedGotoStmt(Expression e)

ComputedGotoStmt(Expression expr, Vector<LabelDecl> labels)

Method Summary

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

Methods inherited from class scale.clef.stmt.MultiBranchStmt

getChild, getExpr, getLabel, numChildren, numLabels, setExpr, setLabels

Methods inherited from class scale.clef.stmt.Statement

containsLoopStmt, dump, getDisplayColorHint, getDisplayLabel, getDisplayShapeHint, getPragma, getSourceLineNumber, hasReturnStmt, numTotalStmts, 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

ComputedGotoStmt

public ComputedGotoStmt(Expression e)

ComputedGotoStmt

public ComputedGotoStmt(Expression expr,
                        Vector<LabelDecl> labels)

Parameters:

expr - is the selection value

labels - is the set of statement labels.

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 MultiBranchStmt

See Also:

Predicate