scale.clef.decl
Class CaseLabelDecl

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.decl.Declaration
              scale.clef.decl.LabelDecl
                  scale.clef.decl.CaseLabelDecl

All Implemented Interfaces:

java.lang.Comparable, AnnotationInterface, DisplayNode

public class CaseLabelDecl
extends LabelDecl

This class represents a C case label in a switch statement.

$Id: CaseLabelDecl.java,v 1.25 2007-03-21 13:31:50 burrill Exp $

Copyright 2007 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

Constructor Summary

CaseLabelDecl(java.lang.String name, Expression value)

Method Summary

Declaration	copy(java.lang.String name) Return a copy of this Declaration but with a different name.
Node	getChild(int i) Return the specified AST child of this node.
Expression	getExpr() Return the case label value.
boolean	isCaseLabelDecl() Return true if CaseLabelDecl instance.
int	numChildren() Return the number of AST children of this node.
CaseLabelDecl	returnCaseLabelDecl() Return a CaseLabelDecl instance or null.
void	setExpr(Expression value) Set the value of the case label.
void	visit(Predicate p) Process a node by calling its associated routine.

Methods inherited from class scale.clef.decl.LabelDecl

isLabelDecl, returnLabelDecl

Methods inherited from class scale.clef.decl.Declaration

accessibility, addressTaken, compareTo, getActualType, getAddressRegister, getAlias, getConstantValue, getCoreType, getDecl, getDisplacement, getDisplayColorHint, getDisplayLabel, getDisplayShapeHint, getMode, getName, getPointedToCore, getStorageLoc, getTag, getType, getValueRegister, hashCode, hasHiddenAliases, inMemory, isCommonBaseVariable, isConst, isEnumElementDecl, isEquivalenceDecl, isExceptionDecl, isFieldDecl, isFileDecl, isFormalDecl, isForwardProcedureDecl, isFtnResultVar, isGlobal, isProcedureDecl, isPure, isReferenced, isRenamed, isRenamedVariableDecl, isRoutineDecl, isStmtFtnDecl, isTemporary, isTypeDecl, isTypeName, isUnknownFormals, isValueDecl, isVariableDecl, isVirtual, isWeak, residency, returnEnumElementDecl, returnEquivalenceDecl, returnExceptionDecl, returnFieldDecl, returnFileDecl, returnFormalDecl, returnForwardProcedureDecl, returnProcedureDecl, returnRenamedVariableDecl, returnRoutineDecl, returnStmtFtnDecl, returnTypeDecl, returnTypeName, returnUnknownFormals, returnValueDecl, returnVariableDecl, setAccessibility, setAddressRegister, setAddressTaken, setAlias, setDisplacement, setName, setReferenced, setResidency, setStorageLoc, setTag, setType, setValueRegister, setVisibility, setWeak, toStringSpecial, valueRegMode, visibility

Methods inherited from class scale.clef.Node

getSourceLineNumber, setAnnotationLevel, setReportLevel, setSourceLineNumber, toString, toString, toStringChildren

Methods inherited from class scale.common.Root

addAnnotation, allAnnotations, allMatchingAnnotations, getAnnotation, getDisplayName, getDisplayString, getNodeCount, getNodeID, hasAnnotation, hasEqualAnnotation, 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

CaseLabelDecl

public CaseLabelDecl(java.lang.String name,
                     Expression value)

Parameters:

name - - the label name

value - - the case value

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 LabelDecl

See Also:

Predicate

getExpr

public Expression getExpr()

Return the case label value.

setExpr

public void setExpr(Expression value)

Set the value of the case label.

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

copy

public Declaration copy(java.lang.String name)

Return a copy of this Declaration but with a different name.

Overrides:

copy in class LabelDecl

isCaseLabelDecl

public final boolean isCaseLabelDecl()

Description copied from class: Declaration

Return true if CaseLabelDecl instance.

Overrides:

isCaseLabelDecl in class Declaration

returnCaseLabelDecl

public final CaseLabelDecl returnCaseLabelDecl()

Description copied from class: Declaration

Return a CaseLabelDecl instance or null.

Overrides:

returnCaseLabelDecl in class Declaration