scale.clef.expr
Class CallFunctionOp

java.lang.Object
  scale.common.Root
      scale.clef.Node
          scale.clef.expr.Expression
              scale.clef.expr.CallOp
                  scale.clef.expr.CallFunctionOp

All Implemented Interfaces:

AnnotationInterface, DisplayNode

public class CallFunctionOp
extends CallOp

A class which represents a call to a function.

$Id: CallFunctionOp.java,v 1.27 2005-02-07 21:27:55 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 type should be the the return type of the called function.

Constructor Summary

CallFunctionOp(Type returnType, Expression routine, Vector<Expression> argList)

Method Summary

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

Methods inherited from class scale.clef.expr.CallOp

containsDeclaration, equivalent, getArg, getChild, getDeclList, getNumArgs, getProcedureInfo, getRoutine, isSimpleOp, numChildren, setArg, setArgList, setRoutine

Methods inherited from class scale.clef.expr.Expression

canonical, getConstantValue, getCoreType, getDisplayColorHint, getDisplayLabel, getDisplayShapeHint, getPointedToCore, getType, hasTrueFalseResult, 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

CallFunctionOp

public CallFunctionOp(Type returnType,
                      Expression routine,
                      Vector<Expression> argList)

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 CallOp

See Also:

Predicate