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import enum, typing
from .time import duration
class SpecArgumentContext(enum.IntFlag):
CHANNEL = 1
PRIVATE = 2
ALL = 3
class SpecArgumentType(object):
context = SpecArgumentContext.ALL
def __init__(self, type_name: str, name: typing.Optional[str],
exported: typing.Optional[str]):
self.type = type_name
self._name = name
self.exported = exported
def name(self) -> typing.Optional[str]:
return self._name
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
return None, -1
def error(self) -> typing.Optional[str]:
return None
class SpecArgumentTypeWord(SpecArgumentType):
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
if args:
return args[0], 1
return None, 1
class SpecArgumentTypeWordLower(SpecArgumentTypeWord):
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
out = SpecArgumentTypeWord.simple(self, args)
if out[0]:
return out[0].lower(), out[1]
return out
class SpecArgumentTypeString(SpecArgumentType):
def name(self):
return "%s ..." % SpecArgumentType.name(self)
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
return " ".join(args), len(args)
class SpecArgumentTypeTrimString(SpecArgumentTypeString):
def simple(self, args: typing.List[str]):
return SpecArgumentTypeString.simple(self, list(filter(None, args)))
class SpecArgumentTypeDuration(SpecArgumentType):
def name(self):
return "+%s" % (SpecArgumentType.name(self) or "duration")
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
if args:
return duration(args[0]), 1
return None, 1
def error(self) -> typing.Optional[str]:
return "Invalid timeframe"
class SpecArgumentPrivateType(SpecArgumentType):
context = SpecArgumentContext.PRIVATE
SPEC_ARGUMENT_TYPES = {
"word": SpecArgumentTypeWord,
"wordlower": SpecArgumentTypeWordLower,
"string": SpecArgumentTypeString,
"tstring": SpecArgumentTypeTrimString,
"duration": SpecArgumentTypeDuration
}
class SpecArgument(object):
optional: bool = False
types: typing.List[SpecArgumentType] = []
@staticmethod
def parse(optional: bool, argument_types: typing.List[str]):
out: typing.List[SpecArgumentType] = []
for argument_type in argument_types:
exported = None
if "~" in argument_type:
exported = argument_type.split("~", 1)[1]
argument_type = argument_type.replace("~", "", 1)
argument_type_name: typing.Optional[str] = None
name_end = argument_type.find(">")
if argument_type.startswith("<") and name_end > 0:
argument_type_name = argument_type[1:name_end]
argument_type = argument_type[name_end+1:]
argument_type_class = SpecArgumentType
if argument_type in SPEC_ARGUMENT_TYPES:
argument_type_class = SPEC_ARGUMENT_TYPES[argument_type]
elif exported:
argument_type_class = SpecArgumentPrivateType
out.append(argument_type_class(argument_type,
argument_type_name, exported))
spec_argument = SpecArgument()
spec_argument.optional = optional
spec_argument.types = out
return spec_argument
def format(self, context: SpecArgumentContext) -> typing.Optional[str]:
if self.optional:
format = "[%s]"
else:
format = "<%s>"
names: typing.List[str] = []
for argument_type in self.types:
if not (context&argument_type.context) == 0:
name = argument_type.name() or argument_type.type
if name:
names.append(name)
if names:
return format % "|".join(names)
return None
class SpecArgumentTypeLiteral(SpecArgumentType):
def simple(self, args: typing.List[str]) -> typing.Tuple[typing.Any, int]:
if args and args[0] == self.name():
return args[0], 1
return None, 1
def error(self) -> typing.Optional[str]:
return None
class SpecLiteralArgument(SpecArgument):
@staticmethod
def parse(optional: bool, literals: typing.List[str]) -> SpecArgument:
spec_argument = SpecLiteralArgument()
spec_argument.optional = optional
spec_argument.types = [
SpecArgumentTypeLiteral("literal", l, None) for l in literals]
return spec_argument
def format(self, context: SpecArgumentContext) -> typing.Optional[str]:
return "|".join(t.name() or "" for t in self.types)
def argument_spec(spec: str) -> typing.List[SpecArgument]:
out: typing.List[SpecArgument] = []
for spec_argument in spec.split(" "):
optional = spec_argument[0] == "?"
if spec_argument[1] == "'":
out.append(SpecLiteralArgument.parse(optional,
spec_argument[2:].split(",")))
else:
out.append(SpecArgument.parse(optional,
spec_argument[1:].split("|")))
return out
def argument_spec_human(spec: typing.List[SpecArgument],
context: SpecArgumentContext=SpecArgumentContext.ALL) -> str:
arguments: typing.List[str] = []
for spec_argument in spec:
out = spec_argument.format(context)
if out:
arguments.append(out)
return " ".join(arguments)
|
