scale.clef.stmt
Class GotoStmt

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.stmt.Statement
              scale.clef.stmt.GotoStmt

All Implemented Interfaces:

AnnotationInterface, DisplayNode

public class GotoStmt
extends Statement

This class represents the C-style goto statement.

$Id: GotoStmt.java,v 1.22 2005-03-24 13:57:07 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

GotoStmt(LabelDecl label)

Method Summary

Node	getChild(int i) Return the specified AST child of this node.
LabelDecl	getLabel() Return the label of the statement to branch to.
int	numChildren() Return the number of AST children of this node.
protected void	setLabel(LabelDecl label) Specify the label of the statement to branch to.
void	visit(Predicate p) Process a node by calling its associated routine.

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

GotoStmt

public GotoStmt(LabelDecl label)

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 Statement

See Also:

Predicate

getLabel

public final LabelDecl getLabel()

Return the label of the statement to branch to.

setLabel

protected final void setLabel(LabelDecl label)

Specify the label of the statement to branch to.

getChild

public Node getChild(int i)

Return the specified AST child of this node.

Overrides:

getChild in class Node

numChildren

public int numChildren()

Return the number of AST children of this node.

Overrides:

numChildren in class Node