def visit_none_type(self, t: NoneTyp) -> Type:
if not isinstance(self.s, Void) and not isinstance(self.s, ErrorType):
return t
else:
return ErrorType()
def visit_void(self, t: Void) -> Type:
if isinstance(self.s, Void):
return t
else:
return ErrorType()
def __init__(self, variance: int = COVARIANT) -> None:
# The 'object' class
self.oi = self.make_type_info('builtins.object') # class object
self.o = Instance(self.oi, []) # object
# Type variables (these are effectively global)
def make_type_var(name: str, id: int, values: List[Type],
upper_bound: Type, variance: int) -> TypeVarType:
return TypeVarType(
TypeVarDef(name, id, values, upper_bound, variance))
self.t = make_type_var('T', 1, [], self.o,
variance) # T`1 (type variable)
self.tf = make_type_var('T', -1, [], self.o,
variance) # T`-1 (type variable)
self.tf2 = make_type_var('T', -2, [], self.o,
variance) # T`-2 (type variable)
self.s = make_type_var('S', 2, [], self.o,
variance) # S`2 (type variable)
self.s1 = make_type_var('S', 1, [], self.o,
variance) # S`1 (type variable)
self.sf = make_type_var('S', -2, [], self.o,
variance) # S`-2 (type variable)
self.sf1 = make_type_var('S', -1, [], self.o,
variance) # S`-1 (type variable)
# Simple types
self.anyt = AnyType()
self.err = ErrorType()
self.nonet = NoneTyp()
self.uninhabited = UninhabitedType()
# Abstract class TypeInfos
# class F
self.fi = self.make_type_info('F', is_abstract=True)
# class F2
self.f2i = self.make_type_info('F2', is_abstract=True)
# class F3(F)
self.f3i = self.make_type_info('F3', is_abstract=True, mro=[self.fi])
# Class TypeInfos
self.std_tuplei = self.make_type_info('builtins.tuple') # class tuple
self.type_typei = self.make_type_info('builtins.type') # class type
self.functioni = self.make_type_info(
'builtins.function') # function TODO
self.ai = self.make_type_info('A', mro=[self.oi]) # class A
self.bi = self.make_type_info('B', mro=[self.ai,
self.oi]) # class B(A)
self.ci = self.make_type_info('C', mro=[self.ai,
self.oi]) # class C(A)
self.di = self.make_type_info('D', mro=[self.oi]) # class D
# class E(F)
self.ei = self.make_type_info('E', mro=[self.fi, self.oi])
# class E2(F2, F)
self.e2i = self.make_type_info('E2', mro=[self.f2i, self.fi, self.oi])
# class E3(F, F2)
self.e3i = self.make_type_info('E3', mro=[self.fi, self.f2i, self.oi])
# Generic class TypeInfos
# G[T]
self.gi = self.make_type_info('G',
mro=[self.oi],
typevars=['T'],
variances=[variance])
# G2[T]
self.g2i = self.make_type_info('G2',
mro=[self.oi],
typevars=['T'],
variances=[variance])
# H[S, T]
self.hi = self.make_type_info('H',
mro=[self.oi],
typevars=['S', 'T'],
variances=[variance, variance])
# GS[T, S] <: G[S]
self.gsi = self.make_type_info('GS',
mro=[self.gi, self.oi],
typevars=['T', 'S'],
variances=[variance, variance],
bases=[Instance(self.gi, [self.s])])
# GS2[S] <: G[S]
self.gs2i = self.make_type_info('GS2',
mro=[self.gi, self.oi],
typevars=['S'],
variances=[variance],
bases=[Instance(self.gi, [self.s1])])
# list[T]
self.std_listi = self.make_type_info('builtins.list',
mro=[self.oi],
typevars=['T'],
variances=[variance])
# Instance types
self.std_tuple = Instance(self.std_tuplei, []) # tuple
self.type_type = Instance(self.type_typei, []) # type
self.function = Instance(self.functioni, []) # function TODO
self.a = Instance(self.ai, []) # A
self.b = Instance(self.bi, []) # B
self.c = Instance(self.ci, []) # C
self.d = Instance(self.di, []) # D
self.e = Instance(self.ei, []) # E
self.e2 = Instance(self.e2i, []) # E2
self.e3 = Instance(self.e3i, []) # E3
self.f = Instance(self.fi, []) # F
self.f2 = Instance(self.f2i, []) # F2
self.f3 = Instance(self.f3i, []) # F3
# Generic instance types
self.ga = Instance(self.gi, [self.a]) # G[A]
self.gb = Instance(self.gi, [self.b]) # G[B]
self.gd = Instance(self.gi, [self.d]) # G[D]
self.go = Instance(self.gi, [self.o]) # G[object]
self.gt = Instance(self.gi, [self.t]) # G[T`1]
self.gtf = Instance(self.gi, [self.tf]) # G[T`-1]
self.gtf2 = Instance(self.gi, [self.tf2]) # G[T`-2]
self.gs = Instance(self.gi, [self.s]) # G[S]
self.gdyn = Instance(self.gi, [self.anyt]) # G[Any]
self.g2a = Instance(self.g2i, [self.a]) # G2[A]
self.gsaa = Instance(self.gsi, [self.a, self.a]) # GS[A, A]
self.gsab = Instance(self.gsi, [self.a, self.b]) # GS[A, B]
self.gsba = Instance(self.gsi, [self.b, self.a]) # GS[B, A]
self.gs2a = Instance(self.gs2i, [self.a]) # GS2[A]
self.gs2b = Instance(self.gs2i, [self.b]) # GS2[B]
self.gs2d = Instance(self.gs2i, [self.d]) # GS2[D]
self.hab = Instance(self.hi, [self.a, self.b]) # H[A, B]
self.haa = Instance(self.hi, [self.a, self.a]) # H[A, A]
self.hbb = Instance(self.hi, [self.b, self.b]) # H[B, B]
self.hts = Instance(self.hi, [self.t, self.s]) # H[T, S]
self.had = Instance(self.hi, [self.a, self.d]) # H[A, D]
self.lsta = Instance(self.std_listi, [self.a]) # List[A]
self.lstb = Instance(self.std_listi, [self.b]) # List[B]
self.type_a = TypeType(self.a)
self.type_b = TypeType(self.b)
self.type_c = TypeType(self.c)
self.type_d = TypeType(self.d)
self.type_t = TypeType(self.t)
self.type_any = TypeType(self.anyt)
def visit_uninhabited_type(self, t: UninhabitedType) -> Type:
if not isinstance(self.s, Void) and not isinstance(self.s, ErrorType):
return t
else:
return ErrorType()
def visit_unbound_type(self, t: UnboundType) -> Type:
if isinstance(self.s, Void) or isinstance(self.s, ErrorType):
return ErrorType()
else:
return AnyType()
def __init__(self):
# The 'object' class
self.oi = self.make_type_info('builtins.object') # class object
self.o = Instance(self.oi, []) # object
# Type variables
self.t = TypeVar('T', 1, [], self.o) # T`1 (type variable)
self.tf = TypeVar('T', -1, [], self.o) # T`-1 (type variable)
self.tf2 = TypeVar('T', -2, [], self.o) # T`-2 (type variable)
self.s = TypeVar('S', 2, [], self.o) # S`2 (type variable)
self.s1 = TypeVar('S', 1, [], self.o) # S`1 (type variable)
self.sf = TypeVar('S', -2, [], self.o) # S`-2 (type variable)
self.sf1 = TypeVar('S', -1, [], self.o) # S`-1 (type variable)
# Simple types
self.anyt = AnyType()
self.void = Void()
self.err = ErrorType()
self.nonet = NoneTyp()
# Abstract class TypeInfos
# class F
self.fi = self.make_type_info('F', is_abstract=True)
# class F2
self.f2i = self.make_type_info('F2', is_abstract=True)
# class F3(F)
self.f3i = self.make_type_info('F3', is_abstract=True, mro=[self.fi])
# Class TypeInfos
self.std_tuplei = self.make_type_info('builtins.tuple') # class tuple
self.type_typei = self.make_type_info('builtins.type') # class type
self.std_functioni = self.make_type_info(
'builtins.function') # function TODO
self.ai = self.make_type_info('A', mro=[self.oi]) # class A
self.bi = self.make_type_info('B', mro=[self.ai,
self.oi]) # class B(A)
self.ci = self.make_type_info('C', mro=[self.ai,
self.oi]) # class C(A)
self.di = self.make_type_info('D', mro=[self.oi]) # class D
# class E(F)
self.ei = self.make_type_info('E', mro=[self.fi, self.oi])
# class E2(F2, F)
self.e2i = self.make_type_info('E2', mro=[self.f2i, self.fi, self.oi])
# class E3(F, F2)
self.e3i = self.make_type_info('E3', mro=[self.fi, self.f2i, self.oi])
# Generic class TypeInfos
# G[T]
self.gi = self.make_type_info('G', mro=[self.oi], typevars=['T'])
# G2[T]
self.g2i = self.make_type_info('G2', mro=[self.oi], typevars=['T'])
# H[S, T]
self.hi = self.make_type_info('H', mro=[self.oi], typevars=['S', 'T'])
# GS[T, S] <: G[S]
self.gsi = self.make_type_info('GS',
mro=[self.gi, self.oi],
typevars=['T', 'S'],
bases=[Instance(self.gi, [self.s])])
# GS2[S] <: G[S]
self.gs2i = self.make_type_info('GS2',
mro=[self.gi, self.oi],
typevars=['S'],
bases=[Instance(self.gi, [self.s1])])
# list[T]
self.std_listi = self.make_type_info('builtins.list',
mro=[self.oi],
typevars=['T'])
# Instance types
self.std_tuple = Instance(self.std_tuplei, []) # tuple
self.type_type = Instance(self.type_typei, []) # type
self.std_function = Instance(self.std_functioni, []) # function TODO
self.a = Instance(self.ai, []) # A
self.b = Instance(self.bi, []) # B
self.c = Instance(self.ci, []) # C
self.d = Instance(self.di, []) # D
self.e = Instance(self.ei, []) # E
self.e2 = Instance(self.e2i, []) # E2
self.e3 = Instance(self.e3i, []) # E3
self.f = Instance(self.fi, []) # F
self.f2 = Instance(self.f2i, []) # F2
self.f3 = Instance(self.f3i, []) # F3
# Generic instance types
self.ga = Instance(self.gi, [self.a]) # G[A]
self.gb = Instance(self.gi, [self.b]) # G[B]
self.go = Instance(self.gi, [self.o]) # G[object]
self.gt = Instance(self.gi, [self.t]) # G[T`1]
self.gtf = Instance(self.gi, [self.tf]) # G[T`-1]
self.gtf2 = Instance(self.gi, [self.tf2]) # G[T`-2]
self.gs = Instance(self.gi, [self.s]) # G[S]
self.gdyn = Instance(self.gi, [self.anyt]) # G[Any]
self.g2a = Instance(self.g2i, [self.a]) # G2[A]
self.gsab = Instance(self.gsi, [self.a, self.b]) # GS[A, B]
self.gsba = Instance(self.gsi, [self.b, self.a]) # GS[B, A]
self.gs2a = Instance(self.gs2i, [self.a]) # GS2[A]
self.hab = Instance(self.hi, [self.a, self.b]) # H[A, B]
self.haa = Instance(self.hi, [self.a, self.a]) # H[A, A]
self.hbb = Instance(self.hi, [self.b, self.b]) # H[B, B]
self.hts = Instance(self.hi, [self.t, self.s]) # H[T, S]
self.lsta = Instance(self.std_listi, [self.a]) # List[A]
self.lstb = Instance(self.std_listi, [self.b]) # List[B]