echo/src/echo/enative_fn.py at master · cdleary/echo

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from typing import Callable, Optional, Any

from echo.epy_object import EPyObject, EPyType, AttrWhere

from echo.interp_result import Result, check_result

from echo.interp_context import ICtx

from echo import eobjects

class ENativeFn(EPyObject):

def __init__(self, f: Callable[..., Result], name: str):

self.f = f

self.name = name

def __repr__(self) -> str:

return f'<built-in function {self.name}>'

def get_type(self) -> EPyType:

return eobjects.EFunctionType.get_singleton()

def hasattr_where(self, name: str) -> Optional[AttrWhere]:

return None

def getattr(self, name: str, ictx: ICtx) -> Result[Any]:

raise NotImplementedError

def setattr(self, name: str, value: Any, ictx: ICtx) -> Result[None]:

raise NotImplementedError

@check_result

def invoke(self, *args, **kwargs) -> Result[Any]:

return self.f(*args, **kwargs)