ptolemy.data.expr

Class ASTPtRecordConstructNode

java.lang.Object

ptolemy.data.expr.ASTPtRootNode

ptolemy.data.expr.ASTPtRecordConstructNode

All Implemented Interfaces:

java.lang.Cloneable, Node

Direct Known Subclasses:

ASTPtOrderedRecordConstructNode

public class ASTPtRecordConstructNode
extends ASTPtRootNode

The parse tree created from the expression string consists of a hierarchy of node objects. This class represents record construction using the following syntax: {foo = "abc", bar = 1}. The result of parsing and evaluating this expression is a record token with two fields: a field foo containing a StringToken of value "abc", and a field bar containing a IntToken of value 1.

Since:

Ptolemy II 1.0

Version:

$Id$

Author:

Xiaojun Liu, Steve Neuendorffer

See Also:

ASTPtRootNode, PtParser, Token

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Yellow (liuxj)

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.LinkedList	_fieldNames The list of field names for the record.

Fields inherited from class ptolemy.data.expr.ASTPtRootNode

_children, _id, _isConstant, _parent, _ptToken, _ptType

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
java.util.List	getFieldNames() Return the list of field names for this record construct.
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

_fieldNames

protected java.util.LinkedList _fieldNames

The list of field names for the record.

Constructor Detail

ASTPtRecordConstructNode

public ASTPtRecordConstructNode(int id)

ASTPtRecordConstructNode

public ASTPtRecordConstructNode(PtParser p,
                                int id)

Method Detail

getFieldNames

public java.util.List getFieldNames()

Return the list of field names for this record construct. The order of the list is not meaningful.

Returns:

the list of field names for this record construct.

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.