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########################################################################
#
# File Name: ParsedRelativeLocationPath.py
#
#
"""
A Parsed Token that represents a relative location path in the parsed result tree.
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
"""
class ParsedRelativeLocationPath:
def __init__(self, left, right):
self._left = left
self._right = right
return
def evaluate(self, context):
rt = self._left.select(context)
if type(rt) != type([]):
raise Exception("Expected node set from relative expression. Got %s"%str(rt))
origState = context.copyNodePosSize()
result = []
l = len(rt)
for ctr in range(l):
n = rt[ctr]
context.setNodePosSize((n, ctr+1, l))
result.extend(self._right.select(context))
context.setNodePosSize(origState)
return result
select = evaluate
def pprint(self, indent=''):
print indent + str(self)
self._left.pprint(indent + ' ')
self._right.pprint(indent + ' ')
def __str__(self):
return '<RelativeLocationPath at %x: %s>' % (
id(self),
repr(self),
)
def __repr__(self):
return repr(self._left) + '/' + repr(self._right)
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