scale.clef.expr
Class SubscriptValueOp

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.expr.Expression
              scale.clef.expr.SubscriptOp
                  scale.clef.expr.SubscriptValueOp

All Implemented Interfaces:

AnnotationInterface, DisplayNode

public class SubscriptValueOp
extends SubscriptOp

A class representing an array subscript operation that returns a value.

$Id: SubscriptValueOp.java,v 1.12 2007-10-04 19:58:06 burrill Exp $

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

The result is the value of the array element.

Constructor Summary

SubscriptValueOp(Type type, Expression array, Vector<Expression> subscripts)

Method Summary

Expression	makeLValue() Create a SubscriptAddressOp instance from this.
void	visit(Predicate p) Process a node by calling its associated routine.

Methods inherited from class scale.clef.expr.SubscriptOp

addIndex, addToIndex, containsDeclaration, equivalent, getArray, getChild, getConstantIndex, getDeclList, getSubscript, getSubscripts, isFortranArray, numChildren, numSubscripts, setArray, setFortranArray

Methods inherited from class scale.clef.expr.Expression

canonical, getConstantValue, getCoreType, getDisplayColorHint, getDisplayLabel, getDisplayShapeHint, getPointedToCore, getType, hasTrueFalseResult, isSimpleOp, setType, toStringSpecial

Methods inherited from class scale.clef.Node

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

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

SubscriptValueOp

public SubscriptValueOp(Type type,
                        Expression array,
                        Vector<Expression> subscripts)

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 SubscriptOp

See Also:

Predicate

makeLValue

public Expression makeLValue()

Create a SubscriptAddressOp instance from this.