def snap_set_expression(stream, PatternDict):
assert stream.__class__.__name__ == "StringIO" \
or stream.__class__.__name__ == "file"
__debug_entry("set_expression", stream)
result = snap_property_set(stream)
if result is not None: return result
x = stream.read(2)
if x == "\\C":
return case_fold_expression.do(stream,
PatternDict,
snap_set_expression=snap_set_expression)
elif x == "[:":
result = snap_set_term(stream, PatternDict)
skip_whitespace(stream)
x = stream.read(2)
if x != ":]":
raise RegularExpressionException("Missing closing ':]' for character set expression.\n" + \
"found: '%s'" % x)
elif x[0] == "[":
stream.seek(-1, 1)
result = traditional_character_set.do(stream)
elif x[0] == "{":
stream.seek(-1, 1)
result = snap_replacement(stream, PatternDict, StateMachineF=False)
else:
result = None
return __debug_exit(result, stream)
def snap_set_expression(stream, PatternDict):
assert stream.__class__.__name__ == "StringIO" \
or stream.__class__.__name__ == "file"
__debug_entry("set_expression", stream)
result = snap_property_set(stream)
if result is not None: return result
x = stream.read(2)
if x == "\\C":
return case_fold_expression.do(stream, PatternDict, snap_set_expression=snap_set_expression)
elif x == "[:":
result = snap_set_term(stream, PatternDict)
skip_whitespace(stream)
x = stream.read(2)
if x != ":]":
raise RegularExpressionException("Missing closing ':]' for character set expression.\n" + \
"found: '%s'" % x)
elif x[0] == "[":
stream.seek(-1, 1)
result = traditional_character_set.do(stream)
elif x[0] == "{":
stream.seek(-1, 1)
result = snap_replacement(stream, PatternDict, StateMachineF=False)
else:
result = None
return __debug_exit(result, stream)
def snap_case_folded_pattern(sh, PatternDict, CharacterSetF=False):
"""Parse a case fold expression of the form \C(..){ R } or \C{ R }.
Assume that '\C' has been snapped already from the stream.
See function ucs_case_fold_parser.get_fold_set() for details
about case folding.
"""
return case_fold_expression.do(sh, PatternDict, snap_expression)
def snap_case_folded_pattern(sh, PatternDict, CharacterSetF=False):
"""Parse a case fold expression of the form \C(..){ R } or \C{ R }.
Assume that '\C' has been snapped already from the stream.
See function ucs_case_fold_parser.get_fold_set() for details
about case folding.
"""
return case_fold_expression.do(sh, PatternDict, snap_expression)