mirror of
https://github.com/erg-lang/erg.git
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82 lines
2.1 KiB
Python
82 lines
2.1 KiB
Python
@Attach NeImpl
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Eq(R |= Self) = Trait {
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.`==` = (self: Self, R) -> Bool
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}
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NeImpl R = Patch Eq R
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NeImpl(R).
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`!=`(self, other: R): Bool = not(self == other)
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@Attach EqImpl, LeImpl, LtImpl, GeImpl, GtImpl
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PartialOrd(R := Self) = Trait {
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.cmp = (self: Self, R) -> Option Ordering
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}
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Ord = Subsume PartialOrd()
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EqForOrd R = Patch Ord, Impl := Eq()
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EqForOrd(R).
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`==`(self, other: R): Bool = self.cmp(other) == Ordering.Equal
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LeForOrd = Patch Ord
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LeForOrd.
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`<=`(self, other: Self): Bool = self.cmp(other) == Ordering.Less or self == other
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LtForOrd = Patch Ord
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LtForOrd.
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`<`(self, other: Self): Bool = self.cmp(other) == Ordering.Less
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GeForOrd = Patch Ord
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GeForOrd.
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`>=`(self, other: Self): Bool = self.cmp(other) == Ordering.Greater or self == other
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GtForOrd = Patch Ord
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GtForOrd.
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`>`(self, other: Self): Bool = self.cmp(other) == Ordering.Greater
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Add(R := Self) = Trait {
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.Output = Type
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.`_+_` = (self: Self, R) -> Self.Output
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}
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Sub(R := Self) = Trait {
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.Output = Type
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.`_-_` = (self: Self, R) -> Self.Output
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}
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Mul(R := Self()) = Trait {
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.Output = Type
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.`*` = (self: Self, R) -> Self.Output
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}
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Div(R := Self) = Trait {
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.Output = Type
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.`/` = (self: Self, R) -> Self.Output or Panic
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}
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Num: (R |= Type) -> Type
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Num = Add and Sub and Mul
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Seq T = Trait {
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.__len__ = (self: Ref(Self)) -> Nat
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.get = (self: Ref(Self), Nat) -> T
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}
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`_+_`: |R: Type, A <: Add(R)| (A, R) -> A.AddO
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`_-_`: |R: Type, S <: Add(R)| (S, R) -> S.SubO
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`*`: |R, O: Type, M <: Add(R)| (M, R) -> M.MulO
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`/`: |R, O: Type, D <: Add(R)| (D, R) -> D.DivO
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AddForInt = Patch Int, Impl := Add()
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AddForInt.AddO = Int
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AddForInt.
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`_+_`: (self: Self, other: Int) -> Int = magic("Add.`_+_`")
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# TODO: Mul and Div
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NumForInterval M, N, O, P: Int =
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Patch M..N, Impl := Add(R := O..P) and Sub(R := O..P)
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NumForInterval(M, N, O, P).
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`_+_`: (self: Self, other: O..P) -> M+O..N+P = magic("NumForInterval.`_+_`")
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`_-_`: (self: Self, other: O..P) -> M-P..N-O = magic("NumForInterval.`_-_`")
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Read = Trait {
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.read = (self: Ref(Self)) -> Str
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}
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Read! = Trait {
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.read! = (self: Ref!(Self)) => Str
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}
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Write! = Trait {
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.write! = (self: Ref!(Self), Str) => ()
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}
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