def _maybe_parse_macro(self):
"""Try to parse an macro (%scope/name)."""
if self._current_token.string != '%':
return False, None
location = self._current_location()
self._advance_one_token()
scoped_name = self._parse_selector(allow_periods_in_scope=True)
with utils.try_with_location(location):
macro = self._delegate.macro(scoped_name)
return True, macro
def _maybe_parse_identifier_reference(self):
"""Try to parse a identifier reference([package.package.]var_or_fn_or_cls_name"""
location = self._current_location()
if self._current_token.kind != tokenize.NAME:
self._raise_syntax_error('Unexpected token.')
begin_line_num = self._current_token.begin[0]
begin_char_num = self._current_token.begin[1]
end_char_num = self._current_token.end[1]
line = self._current_token.line
identifier_parts = []
# This accepts an alternating sequence of NAME or '.' tokens.
step_parity = 0
while (step_parity == 0 and self._current_token.kind == tokenize.NAME
or step_parity == 1 and self._current_token.value == '.'):
identifier_parts.append(self._current_token.value)
step_parity = not step_parity
end_char_num = self._current_token.end[1]
self._advance_one_token()
self._skip_whitespace_and_comments()
identifier = ''.join(identifier_parts)
untokenized_identifier = line[begin_char_num:end_char_num]
valid_format = MODULE_RE.match(identifier)
if untokenized_identifier != identifier or not valid_format:
location = (self._filename, begin_line_num, begin_char_num + 1,
line)
self._raise_syntax_error('Malformatted identifier.', location)
evaluate = False
args = []
kwargs = dict()
if self._current_token.value == '(':
evaluate = True
args, kwargs = self._parse_args_kwargs()
self._skip_whitespace_and_comments()
with utils.try_with_location(location):
reference = self._delegate.identifier_reference(
identifier, evaluate, args, kwargs)
return True, reference
def _maybe_parse_configurable_reference(self):
"""Try to parse a configurable reference (@[scope/name/]fn_name[()])."""
if self._current_token.value != '@':
return False, None
location = self._current_location()
self._advance_one_token()
scoped_name = self._parse_selector(allow_periods_in_scope=True)
evaluate = False
if self._current_token.value == '(':
evaluate = True
self._advance()
if self._current_token.value != ')':
self._raise_syntax_error("Expected ')'.")
self._advance_one_token()
self._skip_whitespace_and_comments()
with utils.try_with_location(location):
reference = self._delegate.configurable_reference(scoped_name, evaluate)
return True, reference
def _maybe_parse_configurable_reference(self):
"""Try to parse a configurable reference (@[scope/name/]fn_name[()])."""
if self._current_token.value != '@':
return False, None
location = self._current_location()
self._advance_one_token()
scoped_name = self._parse_selector(allow_periods_in_scope=True)
evaluate = False
args = []
kwargs = dict()
if self._current_token.value == '(':
evaluate = True
args, kwargs = self._parse_args_kwargs()
self._skip_whitespace_and_comments()
with utils.try_with_location(location):
reference = self._delegate.configurable_reference(
scoped_name, evaluate, args, kwargs)
return True, reference
