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ptolemy.data.expr
Class ASTPtShiftNode

java.lang.Object
 extended byptolemy.data.expr.ASTPtRootNode
 extended byptolemy.data.expr.ASTPtShiftNode

All Implemented Interfaces:

java.lang.Cloneable, Node

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public class ASTPtShiftNode

extends ASTPtRootNode

The parse tree created from the expression string consists of a hierarchy of node objects. This class represents shift operators(>>, <<, <<<) nodes in the parse tree.

Each node of this type has exactly two children. The resolved type is the type of the first child.

Since:

Ptolemy II 0.2

Version:

$Id: ASTPtShiftNode.java,v 1.15 2005年07月08日 19:57:27 cxh Exp $

Author:

Steve Neuendorffer

See Also:

ASTPtRootNode, PtParser, Token

Accepted Rating:

Red (cxh)

Proposed Rating:

Yellow (nsmyth)

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Field Summary
protected Token	_lexicalToken

Fields inherited from class ptolemy.data.expr.ASTPtRootNode

_children, _id, _isConstant, _parent, _ptToken, _ptType

Constructor Summary

ASTPtShiftNode(int id)

ASTPtShiftNode(PtParser p, int id)

Method Summary
Token	getOperator() Return the lexical token representing the operation of this node.
boolean	isCongruent(ASTPtRootNode node, java.util.Map renaming) Return true if this node is (hierarchically) congruent to the given node, under the given renaming of bound identifiers.
void	visit(ParseTreeVisitor visitor) Traverse this node with the given visitor.

Methods inherited from class ptolemy.data.expr.ASTPtRootNode

clone, displayParseTree, evaluateParseTree, getToken, getType, isConstant, isEvaluated, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setConstant, setToken, setType, toString, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_lexicalToken

protected Token _lexicalToken

Constructor Detail

ASTPtShiftNode

public ASTPtShiftNode(int id)

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ASTPtShiftNode

public ASTPtShiftNode(PtParser p,
 int id)

Method Detail

getOperator

public Token getOperator()

Return the lexical token representing the operation of this node.

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isCongruent

public boolean isCongruent(ASTPtRootNode node,
 java.util.Map renaming)

Return true if this node is (hierarchically) congruent to the given node, under the given renaming of bound identifiers. Derived classes should extend this method to add additional necessary congruency checks.

Overrides:

isCongruent in class ASTPtRootNode

Parameters:

node - The node to compare to.

renaming - A map from String to String that gives a renaming from identifiers in this node to identifiers in the given node.

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visit

public void visit(ParseTreeVisitor visitor)
 throws IllegalActionException

Traverse this node with the given visitor.

Overrides:

visit in class ASTPtRootNode

Throws:

IllegalActionException

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