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java.lang.Object scale.common.Root scale.clef.Node scale.clef.type.Type scale.clef.type.CompositeType
public abstract class CompositeType
This is the abstract class for types that are composed of multiple instances of other types such as arrays and structures.
$Id: CompositeType.java,v 1.29 2007-10-04 19:58:08 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 | |
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CompositeType()
|
Method Summary | |
---|---|
boolean |
isCompositeType()
Return true if type represents a composite type. |
CompositeType |
returnCompositeType()
Return if this is a CompositeType , return this . |
void |
visit(Predicate p)
Process a node by calling its associated routine. |
void |
visit(TypePredicate p)
Process a node by calling its associated routine. |
Methods inherited from class scale.clef.Node |
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getChild, getDecl, getSourceLineNumber, numChildren, setAnnotationLevel, setReportLevel, setSourceLineNumber, toString, toStringChildren, toStringSpecial |
Methods inherited from class scale.common.Root |
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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 |
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clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public CompositeType()
Method Detail |
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public void visit(Predicate p)
Node
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.
visit
in class Type
Predicate
public void visit(TypePredicate p)
Type
Each type class has a visit(TypePredicate 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
TypePredicate
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.
visit
in class Type
TypePredicate
public boolean isCompositeType()
isCompositeType
in class Type
public final CompositeType returnCompositeType()
Type
this
is a CompositeType
, return this
. Otherwise, return
null
.
returnCompositeType
in class Type
|
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