26 lines
751 B
Python
26 lines
751 B
Python
# sly/ast.py
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import sys
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class AST(object):
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@classmethod
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def __init_subclass__(cls, **kwargs):
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mod = sys.modules[cls.__module__]
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if not hasattr(cls, '__annotations__'):
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return
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hints = list(cls.__annotations__.items())
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def __init__(self, *args, **kwargs):
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if len(hints) != len(args):
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raise TypeError(f'Expected {len(hints)} arguments')
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for arg, (name, val) in zip(args, hints):
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if isinstance(val, str):
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val = getattr(mod, val)
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if not isinstance(arg, val):
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raise TypeError(f'{name} argument must be {val}')
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setattr(self, name, arg)
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cls.__init__ = __init__
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