Class ASTPtLeafNode

  • All Implemented Interfaces:
    java.lang.Cloneable, Node

    public class ASTPtLeafNode
    extends ASTPtRootNode
    The parse tree created from the expression string consists of a hierarchy of node objects. This class represents the leaf nodes of the tree.
    Since:
    Ptolemy II 0.2
    Version:
    $Id$
    Author:
    Neil Smyth
    See Also:
    ASTPtRootNode, PtParser, Token
    Pt.AcceptedRating:
    Red (cxh)
    Pt.ProposedRating:
    Yellow (nsmyth)
    • Field Detail

      • _name

        protected java.lang.String _name
        The identifier that this leaf node refers to.
    • Constructor Detail

      • ASTPtLeafNode

        public ASTPtLeafNode​(int id)
      • ASTPtLeafNode

        public ASTPtLeafNode​(PtParser p,
                             int id)
    • Method Detail

      • getName

        public java.lang.String getName()
        Return the name that this node refers to. This may be a literal value, such as "5", or a reference to another object, such as the name of a variable in scope.
        Returns:
        The name to which this node refers.
      • 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.
      • isIdentifier

        public boolean isIdentifier()
        Return true if the leaf is an identifier that must be evaluated in scope.
        Returns:
        true if the leaf is not a constant.
      • toString

        public java.lang.String toString()
        Return a string representation
        Overrides:
        toString in class ASTPtRootNode
        Returns:
        The string value of this node.