def ShortOption(self, char, help=None):
# type: (str, Optional[str]) -> None
"""Define an option that can be turned off with + and on with -."""
assert len(char) == 1 # 'r' for -r +r
self.options[char] = True
self.defaults[char] = value.Undef()
# '+' or '-'. TODO: Should we make it a bool?
self.fields[char] = flag_type.Str()
def PlusFlag(self, char, help=None):
# type: (str, Optional[str]) -> None
"""Define an option that can be turned off with + and on with -.
It's actually a ternary value: plus, minus, or unset.
"""
assert len(char) == 1 # 'r' for -r +r
self.plus_flags.append(char)
self.defaults[char] = value.Undef()
# '+' or '-'. TODO: Should we make it a bool?
self.fields[char] = flag_type.Str()
def _FlagType(arg_type):
# type: (Union[None, int, List[str]]) -> flag_type_t
if arg_type is None:
typ = flag_type.Bool() # type: flag_type_t
elif arg_type == args.Int:
typ = flag_type.Int()
elif arg_type == args.Float:
typ = flag_type.Float()
elif arg_type == args.String:
typ = flag_type.Str()
elif isinstance(arg_type, list):
typ = flag_type.Enum(arg_type)
else:
raise AssertionError(arg_type)
return typ
def ShortFlag(self, short_name, arg_type=None, help=None):
# type: (str, Optional[int], Optional[str]) -> None
"""
This is very similar to ShortFlag for FlagSpecAndMore, except we have
separate arity0 and arity1 dicts.
"""
assert short_name.startswith('-'), short_name
assert len(short_name) == 2, short_name
char = short_name[1]
if arg_type is None:
self.arity0[char] = True
else:
self.arity1[char] = args.SetToArg(char, _FlagType(arg_type))
# TODO: callers should pass flag_type
if arg_type is None:
typ = flag_type.Bool() # type: flag_type_t
default = value.Bool(False) # type: value_t
elif arg_type == args.Int:
typ = flag_type.Int()
default = value.Int(-1)
elif arg_type == args.Float:
typ = flag_type.Float()
default = value.Float(0.0)
elif arg_type == args.String:
typ = flag_type.Str()
default = value.Str('')
elif isinstance(arg_type, list):
typ = flag_type.Enum(arg_type)
default = value.Str('') # This isn't valid
else:
raise AssertionError(arg_type)
if self.typed:
self.defaults[char] = default
else:
# TODO: remove when all builtins converted
self.defaults[char] = value.Undef()
self.fields[char] = typ