Viewing file:  ParsedAbbreviatedRelativeLocationPath.py (2.09 KB) -rw-r--r--
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########################################################################
#
# File Name: ParsedAbbreviatedRelativeLocationPath.py
#
#
"""
A parsed token that represents a abbreviated relative location path.
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
"""
from xml.xpath import ParsedNodeTest
from xml.xpath import ParsedPredicateList
from xml.xpath import ParsedAxisSpecifier
from xml.xpath import ParsedStep
import Set
class ParsedAbbreviatedRelativeLocationPath:
def __init__(self,left,right):
"""
left can be a step or a relative location path
right is only a step
"""
self._left = left
self._right = right
nt = ParsedNodeTest.ParsedNodeTest('node','')
ppl = ParsedPredicateList.ParsedPredicateList([])
as = ParsedAxisSpecifier.ParsedAxisSpecifier('descendant-or-self')
self._middle = ParsedStep.ParsedStep(as, nt, ppl)
def evaluate(self, context):
res = []
rt = self._left.select(context)
l = len(rt)
origState = context.copyNodePosSize()
for ctr in range(l):
context.setNodePosSize((rt[ctr],ctr+1,l))
subRt = self._middle.select(context)
res = Set.Union(res,subRt)
rt = res
res = []
l = len(rt)
for ctr in range(l):
context.setNodePosSize((rt[ctr],ctr+1,l))
subRt = self._right.select(context)
res = Set.Union(res,subRt)
context.setNodePosSize(origState)
return res
select = evaluate
def pprint(self, indent=''):
print indent + str(self)
self._left.pprint(indent + ' ')
self._middle.pprint(indent + ' ')
self._right.pprint(indent + ' ')
def __str__(self):
return '<AbbreviatedRelativeLocationPath at %x: %s>' % (
id(self),
repr(self),
)
def __repr__(self):
return repr(self._left) + '//' + repr(self._right)
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