ptolemy.data.expr

Class ASTPtBitwiseNode

java.lang.Object

ptolemy.data.expr.ASTPtRootNode

ptolemy.data.expr.ASTPtBitwiseNode

All Implemented Interfaces:

java.lang.Cloneable, Node

public class ASTPtBitwiseNode
extends ASTPtRootNode

The parse tree created from the expression string consists of a hierarchy of node objects. This class represents bitwise operator(&, |, ^) nodes in the parse tree.

Since:

Ptolemy II 0.2

Version:

$Id$

Author:

Neil Smyth, Steve Neuendorffer

See Also:

ASTPtRootNode, PtParser, Token

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Yellow (nsmyth)

Field Summary

Fields

Modifier and Type	Field and Description
protected Token	_lexicalToken

Fields inherited from class ptolemy.data.expr.ASTPtRootNode

_children, _id, _isConstant, _parent, _ptToken, _ptType

Constructor Summary

Constructors

Constructor and Description
ASTPtBitwiseNode(int id)
ASTPtBitwiseNode(PtParser p, int id)

Method Summary

Modifier and Type	Method and Description
Token	getOperator() Return the token that represents the operation of this node.
boolean	isBitwiseAnd() Return true if this operation represents a boolean AND operation.
boolean	isBitwiseOr() Return true if this operation represents a boolean OR operation.
boolean	isBitwiseXor() Return true if this operation represents a boolean XOR operation.
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

ASTPtBitwiseNode

public ASTPtBitwiseNode(int id)

ASTPtBitwiseNode

public ASTPtBitwiseNode(PtParser p,
                        int id)

Method Detail

getOperator

public Token getOperator()

Return the token that represents the operation of this node.

Returns:

the token that represents the operation of this node.

isBitwiseAnd

public boolean isBitwiseAnd()

Return true if this operation represents a boolean AND operation.

Returns:

true if this operation represents a boolean AND operation.

isBitwiseOr

public boolean isBitwiseOr()

Return true if this operation represents a boolean OR operation.

Returns:

true if this operation represents a boolean OR operation.

isBitwiseXor

public boolean isBitwiseXor()

Return true if this operation represents a boolean XOR operation.

Returns:

true if this operation represents a boolean XOR operation.

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.

Returns:

True if the node is congruent.

visit

public void visit(ParseTreeVisitor visitor)
           throws IllegalActionException

Traverse this node with the given visitor.

Overrides:

visit in class ASTPtRootNode

Parameters:

visitor - The visitor.

Throws:

IllegalActionException - Always thrown in this base class the visit() method is not implemented here.