55 lines
1.1 KiB
Python
55 lines
1.1 KiB
Python
from abc import ABC, abstractmethod
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class ValidatorException(Exception):
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pass
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class Validator(ABC):
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@staticmethod
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def of(x):
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if isinstance(x, Validator):
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return x
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if callable(x):
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return LambdaValidator(x)
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if x in validator_types:
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return validator_types[x]()
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raise ValidatorException("Cannot create validator")
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@abstractmethod
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def isValid(self, value):
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pass
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class LambdaValidator(Validator):
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def __init__(self, c):
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self.callable = c
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def isValid(self, value):
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return self.callable(value)
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class NumberValidator(Validator):
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def isValid(self, value):
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return isinstance(value, int) or isinstance(value, float)
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class IntegerValidator(Validator):
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def isValid(self, value):
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return isinstance(value, int)
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class StringValidator(Validator):
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def isValid(self, value):
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return isinstance(value, str)
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validator_types = {
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"string": StringValidator,
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"str": StringValidator,
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"integer": IntegerValidator,
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"int": IntegerValidator,
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"number": NumberValidator,
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"num": NumberValidator,
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}
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