def PathExpr(self):
_token_ = self._peek("r'\\/'", "r'\\/\\/'", "r'\\('",
'FORWARD_AXIS_NAME', "r'@'", 'REVERSE_AXIS_NAME',
"r'\\.\\.'", "r'\\$'", "r'\\.'", 'FUNCNAME',
'NUMBER', 'DQUOTE', 'SQUOTE',
"r'processing-instruction\\s*\\('",
"r'comment\\s*\\('", "r'text\\s*\\('",
"r'node\\s*\\('", "r'\\*'", 'NCNAME')
if _token_ == "r'\\/'":
self._scan("r'\\/'")
path = None
if self._peek(
"r'\\('", 'FORWARD_AXIS_NAME', "r'@'", 'REVERSE_AXIS_NAME',
"r'\\.\\.'", "r'\\$'", "r'\\.'", 'FUNCNAME', 'NUMBER',
'DQUOTE', 'SQUOTE', "r'processing-instruction\\s*\\('",
"r'comment\\s*\\('", "r'text\\s*\\('", "r'node\\s*\\('",
"r'\\*'", 'NCNAME', "'\\|'", 'MUL_COMP', 'ADD_COMP',
'REL_COMP', 'EQ_COMP', "r'and'", "r'or'", 'END', "r'\\]'",
"r'\\)'", "r'\\,'") not in [
"'\\|'", 'MUL_COMP', 'ADD_COMP', 'REL_COMP', 'EQ_COMP',
"r'and'", "r'or'", 'END', "r'\\]'", "r'\\)'", "r'\\,'"
]:
RelativePathExpr = self.RelativePathExpr()
path = RelativePathExpr
return X.AbsolutePathExpr(path)
elif _token_ == "r'\\/\\/'":
self._scan("r'\\/\\/'")
RelativePathExpr = self.RelativePathExpr()
step = X.AxisStep('descendant-or-self')
RelativePathExpr.steps.insert(0, step)
return X.AbsolutePathExpr(RelativePathExpr)
else:
RelativePathExpr = self.RelativePathExpr()
return RelativePathExpr
def LocationPathPattern(self):
_token_ = self._peek("r'\\/'", "r'\\/\\/'", "r'id'", "r'key'", "r'@'",
"'child'", "'attribute'",
"r'processing-instruction'", "r'comment'",
"r'text'", "r'node'", "r'\\*'", 'NCNAME')
if _token_ == "r'\\/'":
self._scan("r'\\/'")
path = None
if self._peek("r'@'", "'child'", "'attribute'", "'\\|'",
"r'processing-instruction'", "r'comment'", "r'text'",
"r'node'", "r'\\*'", 'NCNAME',
'END') not in ["'\\|'", 'END']:
RelativePathPattern = self.RelativePathPattern()
path = RelativePathPattern
return X.AbsolutePathExpr(path)
elif _token_ not in ["r'id'", "r'key'"]:
if self._peek("r'\\/\\/'", "r'@'", "'child'", "'attribute'",
"r'processing-instruction'", "r'comment'", "r'text'",
"r'node'", "r'\\*'", 'NCNAME') == "r'\\/\\/'":
self._scan("r'\\/\\/'")
RelativePathPattern = self.RelativePathPattern()
step = X.AxisStep('descendant-or-self')
RelativePathPattern.steps.insert(0, step)
return X.AbsolutePathExpr(RelativePathPattern)
else: # in ["r'id'", "r'key'"]
IdKeyPattern = self.IdKeyPattern()
expr = [IdKeyPattern]
if self._peek("r'\\/'", "r'\\/\\/'", "'\\|'",
'END') in ["r'\\/'", "r'\\/\\/'"]:
_token_ = self._peek("r'\\/'", "r'\\/\\/'")
if _token_ == "r'\\/'":
self._scan("r'\\/'")
step = None
else: # == "r'\\/\\/'"
self._scan("r'\\/\\/'")
step = X.AxisStep('descendant-or-self')
RelativePathPattern = self.RelativePathPattern()
if step:
RelativePathPattern.steps.append(step)
RelativePathPattern.steps.append(expr)
expr = RelativePathPattern
return X.AbsolutePathExpr(expr)
def AxisStep(self):
_token_ = self._peek('FORWARD_AXIS_NAME', "r'@'", 'REVERSE_AXIS_NAME', "r'\\.\\.'", "r'processing-instruction'", "r'comment'", "r'text'", "r'node'", "r'\\*'", 'NCNAME')
if _token_ not in ['REVERSE_AXIS_NAME', "r'\\.\\.'"]:
ForwardStep = self.ForwardStep()
step = ForwardStep
else:# in ['REVERSE_AXIS_NAME', "r'\\.\\.'"]
ReverseStep = self.ReverseStep()
step = ReverseStep
expr = X.AxisStep(*step)
if self._peek("r'\\['", "r'\\/'", "r'\\/\\/'", "'\\|'", 'MUL_COMP', 'ADD_COMP', 'REL_COMP', 'EQ_COMP', "r'and'", "r'or'", 'END', "r'\\]'", "r'\\)'", "r'\\,'") == "r'\\['":
PredicateList = self.PredicateList()
expr = X.PredicateList(expr, PredicateList, step[0])
return expr
def RelativePathExpr(self):
StepExpr = self.StepExpr()
steps = [StepExpr]
while self._peek("r'\\/'", "r'\\/\\/'", "'\\|'", 'MUL_COMP', 'ADD_COMP', 'REL_COMP', 'EQ_COMP', "r'and'", "r'or'", 'END', "r'\\]'", "r'\\)'", "r'\\,'") in ["r'\\/'", "r'\\/\\/'"]:
_token_ = self._peek("r'\\/'", "r'\\/\\/'")
if _token_ == "r'\\/'":
self._scan("r'\\/'")
else:# == "r'\\/\\/'"
self._scan("r'\\/\\/'")
steps.append(X.AxisStep('descendant-or-self'))
StepExpr = self.StepExpr()
steps.append(StepExpr)
return X.PathExpr(steps)
def RelativePathPattern(self):
StepPattern = self.StepPattern()
steps = [StepPattern]
while self._peek("r'\\/'", "r'\\/\\/'", "'\\|'",
'END') in ["r'\\/'", "r'\\/\\/'"]:
_token_ = self._peek("r'\\/'", "r'\\/\\/'")
if _token_ == "r'\\/'":
self._scan("r'\\/'")
else: # == "r'\\/\\/'"
self._scan("r'\\/\\/'")
steps.append(X.AxisStep('descendant-or-self'))
StepPattern = self.StepPattern()
steps.append(StepPattern)
return X.PathExpr(steps)
def StepPattern(self):
_token_ = self._peek("r'@'", "'child'", "'attribute'",
"r'processing-instruction'", "r'comment'",
"r'text'", "r'node'", "r'\\*'", 'NCNAME')
if _token_ not in ["'child'", "'attribute'"]:
AbbrevForwardStep = self.AbbrevForwardStep()
step = AbbrevForwardStep
else: # in ["'child'", "'attribute'"]
ChildOrAttributeAxisStep = self.ChildOrAttributeAxisStep()
step = ChildOrAttributeAxisStep
expr = X.AxisStep(*step)
if self._peek("r'\\['", "r'\\/'", "r'\\/\\/'", "'\\|'",
'END') == "r'\\['":
PredicateList = self.PredicateList()
expr = X.PredicateList(expr, PredicateList, step[0])
return expr
def ContextItemExpr(self):
self._scan("r'\\.'")
return X.AxisStep('self')