net.sf.joost.grammar.tree
Class SeqTree

java.lang.Object
  net.sf.joost.grammar.Tree
      net.sf.joost.grammar.tree.SeqTree

public final class SeqTree

extends Tree

Objects of SeqTree represent nodes of a sequence in the syntax tree of a pattern or an STXPath expression.

Version:

$Revision: 1.1 $ $Date: 2004/09/29 05:59:51 $

Author:

Oliver Becker

Field Summary

Fields inherited from class net.sf.joost.grammar.Tree

ADD, AND, ATTR, ATTR_LOCAL_WILDCARD, ATTR_URI_WILDCARD, ATTR_WILDCARD, AVT, CDATA_TEST, CHILD, COMMENT_TEST, DDOT, DESC, DIV, DOT, EQ, FUNCTION, GE, GT, LE, left, LIST, lName, LOCAL_WILDCARD, LT, MOD, MULT, NAME_TEST, NE, NODE_TEST, NUMBER, OR, PI_TEST, PREDICATE, right, ROOT, SEQ, STRING, SUB, TEXT_TEST, type, UNION, uri, URI_WILDCARD, value, VALUE, VAR, WILDCARD

Constructor Summary

SeqTree()

SeqTree(Tree left, Tree right)

Method Summary

Value

evaluate(Context context, int top) Evaluates the current Tree if it represents an expression.

Methods inherited from class net.sf.joost.grammar.Tree

evaluate, getPriority, matches, reverseAssociativity, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SeqTree

public SeqTree()

SeqTree

public SeqTree(Tree left,
               Tree right)

Method Detail

evaluate

public Value evaluate(Context context,
                      int top)
               throws SAXException

Description copied from class: Tree

Evaluates the current Tree if it represents an expression.

Overrides:

evaluate in class Tree

Parameters:

context - the current Context

top - the part of the stack to be considered for the evaluation (the upper most element is at position top-1)

Returns:

a new computed Value object containing the result

Throws:

SAXException