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|
########################################################################
#
# File Name: Context.py
#
#
"""
The context of an XPath expression.
WWW: http://4suite.org/XPATH e-mail: support@4suite.org
Copyright (c) 2000-2001 Fourthought Inc, USA. All Rights Reserved.
See http://4suite.org/COPYRIGHT for license and copyright information
"""
import xml.dom.ext
import CoreFunctions
class Context:
functions = CoreFunctions.CoreFunctions
def __init__(self,
node,
position=1,
size=1,
varBindings=None,
processorNss=None):
self.node = node
self.position = position
self.size = size
self.varBindings = varBindings or {}
self.processorNss = processorNss or {}
self._cachedNss = None
self._cachedNssNode = None
self.stringValueCache = {}
return
def __repr__(self):
return "<Context at %s: Node=%s, Postion=%d, Size=%d>" % (
id(self),
self.node,
self.position,
self.size
)
def nss(self):
if self._cachedNss is None or self.node != self._cachedNssNode:
nss = xml.dom.ext.GetAllNs(self.node)
self._cachedNss = nss
self._cachedNssNode = self.node
return self._cachedNss
def next(self):
pass
def setNamespaces(self, processorNss):
self.processorNss = processorNss
def copyNamespaces(self):
return self.processorNss.copy()
def setVarBindings(self, varBindings):
self.varBindings = varBindings
def copyVarBindings(self):
#FIXME: should this be deep copy, because of the possible list entries?
return self.varBindings.copy()
def copyNodePosSize(self):
return (self.node, self.position, self.size)
def setNodePosSize(self,(node,pos,size)):
self.node = node
self.position = pos
self.size = size
def copy(self):
newdict = self.__dict__.copy()
newdict["varBindings"] = self.varBindings.copy()
return newdict
def set(self,d):
self.__dict__ = d
|
