def __init__(self, expression, sep, path):
if sep == '//':
from amara.xpath.locationpaths import \
relative_location_path, location_step
from amara.xpath.locationpaths.axisspecifiers import axis_specifier
from amara.xpath.locationpaths.nodetests import node_type
assert isinstance(path, relative_location_path), repr(path)
step = location_step(axis_specifier('descendant-or-self'),
node_type('node'))
path._steps.insert(0, step)
self._expression = expression
self._path = path
return
def __init__(self, expression, sep, path):
if sep == '//':
from amara.xpath.locationpaths import \
relative_location_path, location_step
from amara.xpath.locationpaths.axisspecifiers import axis_specifier
from amara.xpath.locationpaths.nodetests import node_type
assert isinstance(path, relative_location_path), repr(path)
step = location_step(axis_specifier('descendant-or-self'),
node_type('node'))
path._steps.insert(0, step)
self._expression = expression
self._path = path
return
def __init__(self, path):
assert isinstance(path, relative_location_path)
self._steps = path._steps
# `a//b` is the same as `a/descendant::b` if `b` uses the `child`
# axis and has no (positional) predicates
step = path._steps[0]
if not step.predicates and isinstance(step.axis, axisspecifiers.child_axis):
axis = axisspecifiers.axis_specifier("descendant")
path._steps[0] = location_step(axis, step.node_test)
else:
axis = axisspecifiers.axis_specifier("descendant-or-self")
node_test = nodetests.node_type("node")
abbrev = location_step(axis, node_test)
self._steps.insert(0, abbrev)
class abbreviated_step(location_step):
"""
An object representing an abbreviated location step
(XPath 1.0 grammar production 12: AbbreviatedStep)
"""
node_test = nodetests.node_type('node')
predicates = None
def __init__(self, abbrev):
if abbrev == '.':
axis = 'self'
else:
assert abbrev == '..'
axis = 'parent'
self.axis = axisspecifiers.axis_specifier(axis)
def __init__(self, path):
assert isinstance(path, relative_location_path)
self._steps = path._steps
# `a//b` is the same as `a/descendant::b` if `b` uses the `child`
# axis and has no (positional) predicates
step = path._steps[0]
if not step.predicates and isinstance(step.axis,
axisspecifiers.child_axis):
axis = axisspecifiers.axis_specifier('descendant')
path._steps[0] = location_step(axis, step.node_test)
else:
axis = axisspecifiers.axis_specifier('descendant-or-self')
node_test = nodetests.node_type('node')
abbrev = location_step(axis, node_test)
self._steps.insert(0, abbrev)
