117 lines
2.7 KiB
Python
117 lines
2.7 KiB
Python
class Type:
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def __eq__(self, other):
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return False
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def get_vars(self):
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return []
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class BotType:
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def __eq__(self, other):
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return isinstance(other, BotType)
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class PrimitiveType(Type):
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name: str
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def __init__(self, name: str):
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self.name = name
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def __str__(self):
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return self.name
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def __eq__(self, other):
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return isinstance(other, PrimitiveType) and self.name == other.name
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class TypeVariable(Type):
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name: str
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# this may be a list of str, Type may not be determined when type variables
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# are instantiated...
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# and they cannot contain other type variables
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constraints: list[Type]
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def __init__(self, name: str, constraints: list[Type]):
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self.name = name
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self.constraints = constraints
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def __str__(self):
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return self.name
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def __eq__(self, other):
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return isinstance(other, TypeVariable) and self.name == other.name
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def get_vars(self):
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return [self]
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class ClassType(Type):
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name: str
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parents: list['ClassType']
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methods: dict[str, tuple[list[Type], Type, set[str]]]
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fields: dict[str, Type]
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def __init__(self, name: str):
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self.name = name
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self.parents = []
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self.methods = {}
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self.fields = {}
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def __str__(self):
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return self.name
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def __eq__(self, other):
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return isinstance(other, ClassType) and self.name == other.name
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class VirtualClassType(Type):
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base: ClassType
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def __init__(self, base: ClassType):
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self.base = base
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def __str__(self):
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return f"virtual[{self.base}]"
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def __eq__(self, other):
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return isinstance(other, VirtualClassType) and self.base== other.base
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class ParametricType(Type):
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params: list[Type]
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def __init__(self, params: list[Type]):
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self.params = params
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def __eq__(self, other):
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if type(self) != type(other) or len(self.params) != len(other.params):
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return False
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for x, y in zip(self.params, other.params):
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if x != y:
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return False
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return True
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def get_vars(self):
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result = []
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for p in self.params:
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vars = p.get_vars()
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for v in vars:
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if v not in result:
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result.append(v)
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return result
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class ListType(ParametricType):
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def __init__(self, param: Type):
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super().__init__([param])
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def __str__(self):
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return f"list[{self.params[0]}]"
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class TupleType(ParametricType):
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def __init__(self, params: list[Type]):
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super().__init__(params)
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def __str__(self):
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return f"tuple[{', '.join([str(v) for v in self.params])}]"
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