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derivation sacrificed

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This commit is contained in:
AF 2023-03-14 10:09:49 +00:00
parent 0a4f00a172
commit bfd7f95407
3 changed files with 7 additions and 166 deletions
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6
src/func.rs
View File

@ -15,7 +15,7 @@ pub trait CarriesType<T: WeakFunctor + ?Sized> {
}
/// Rust-specific implementation of [Functor], respecting `move` semantics.
///
///
/// Cannot insantiate for e.g. multi-element collections:
/// ```compile_fail
/// use radn_rs::func::*;
@ -32,8 +32,8 @@ pub trait CarriesType<T: WeakFunctor + ?Sized> {
/// }
/// }
/// ```
/// Why does it fail to compile? `.map` expects `FnMut` (or we can think of it being `Fn`, doesn't matter here). But what we provide it (`f`) is
///
/// Why does it fail to compile? `.map` expects `FnMut` (or we can think of it being `Fn`, doesn't matter here). But what we provide it (`f`) is
///
/// For Haskell-style Functors, use [clone_func::CloneFunctor] instead.
/// ```
/// use radn_rs::func::clone_func::*;

85
src/func/clone_func.rs
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@ -1,11 +1,5 @@
use crate::func::*;
pub trait CloneWeakFunctor {
type ClF<'a, A: Clone>;
}
impl<T: WeakFunctor> CloneWeakFunctor for T {
type ClF<'a, A: Clone> = T::F<'a, A>;
type ClF<'a, A: Clone>: Clone;
}
pub trait CloneFunctor: CloneWeakFunctor {
@ -26,26 +20,6 @@ pub trait CloneFunctor: CloneWeakFunctor {
}
}
impl<T: Functor> CloneFunctor for T {
fn clone_fmap<'a, A: 'a + Clone, B: 'a + Clone, F: 'a + Fn(A) -> B>(
f: F,
fa: Self::ClF<'a, A>,
) -> Self::ClF<'a, B> {
Self::fmap(f, fa)
}
fn clone_replace<'a, A: 'a + Clone, B: 'a + Clone>(
fa: Self::ClF<'a, A>,
b: B,
) -> Self::ClF<'a, B> {
Self::replace(fa, b)
}
fn clone_void<'a, A: 'a + Clone>(fa: Self::ClF<'a, A>) -> Self::ClF<'a, ()> {
Self::void(fa)
}
}
pub trait CloneApplicativeSeq: CloneFunctor {
fn clone_seq<'a, A: 'a + Clone, B: 'a + Clone, F: 'a + Clone + Fn(A) -> B>(
ff: Self::ClF<'a, F>,
@ -76,15 +50,6 @@ pub trait CloneApplicativeSeq: CloneFunctor {
}
}
impl<T: ApplicativeSeq> CloneApplicativeSeq for T {
fn clone_seq<'a, A: 'a + Clone, B: 'a + Clone, F: 'a + Clone + Fn(A) -> B>(
ff: Self::ClF<'a, F>,
fa: Self::ClF<'a, A>,
) -> Self::ClF<'a, B> {
Self::seq(ff, fa)
}
}
pub trait CloneApplicativeLA2: CloneFunctor {
fn clone_la2<'a, A: 'a + Clone, B: 'a + Clone, C: 'a + Clone, F: 'a + Clone + Fn(A, B) -> C>(
f: F,
@ -100,16 +65,6 @@ pub trait CloneApplicativeLA2: CloneFunctor {
}
}
impl<T: ApplicativeLA2> CloneApplicativeLA2 for T {
fn clone_la2<'a, A: 'a + Clone, B: 'a + Clone, C: 'a + Clone, F: 'a + Clone + Fn(A, B) -> C>(
f: F,
fa: Self::ClF<'a, A>,
fb: Self::ClF<'a, B>,
) -> Self::ClF<'a, C> {
Self::la2(f, fa, fb)
}
}
pub trait CloneApplicative: CloneFunctor + CloneApplicativeSeq + CloneApplicativeLA2 {
fn clone_pure<'a, A: 'a + Clone>(a: A) -> Self::ClF<'a, A>;
@ -128,26 +83,6 @@ pub trait CloneApplicative: CloneFunctor + CloneApplicativeSeq + CloneApplicativ
}
}
impl<T: Applicative> CloneApplicative for T {
fn clone_pure<'a, A: 'a + Clone>(a: A) -> Self::ClF<'a, A> {
Self::pure(a)
}
fn clone_discard_first<'a, A: 'a + Clone, B: 'a + Clone>(
fa: Self::ClF<'a, A>,
fb: Self::ClF<'a, B>,
) -> Self::ClF<'a, B> {
Self::discard_first(fa, fb)
}
fn clone_discard_second<'a, A: 'a + Clone, B: 'a + Clone>(
fa: Self::ClF<'a, A>,
fb: Self::ClF<'a, B>,
) -> Self::ClF<'a, A> {
Self::discard_second(fa, fb)
}
}
pub trait CloneMonad: CloneApplicative {
fn clone_bind<'a, A: 'a + Clone, B: 'a + Clone, F: 'a + Clone + Fn(A) -> Self::ClF<'a, B>>(
fa: Self::ClF<'a, A>,
@ -156,25 +91,9 @@ pub trait CloneMonad: CloneApplicative {
fn clone_join<'a, A: 'a + Clone>(ffa: Self::ClF<'a, Self::ClF<'a, A>>) -> Self::ClF<'a, A>
where
Self::ClF<'a, A>: 'a + Clone,
Self::ClF<'a, A>: 'a,
{
// ugly
Self::clone_bind(ffa, |fa| fa)
}
}
impl<T: Monad> CloneMonad for T {
fn clone_bind<'a, A: 'a + Clone, B: 'a + Clone, F: 'a + Clone + Fn(A) -> Self::ClF<'a, B>>(
fa: Self::ClF<'a, A>,
f: F,
) -> Self::ClF<'a, B> {
T::bind(fa, f)
}
fn clone_join<'a, A: 'a + Clone>(ffa: Self::ClF<'a, Self::ClF<'a, A>>) -> Self::ClF<'a, A>
where
Self::ClF<'a, A>: 'a + Clone,
{
T::join(ffa)
}
}

82
src/func/copy_func.rs
View File

@ -1,11 +1,5 @@
use crate::func::clone_func::*;
pub trait CopyWeakFunctor {
type CF<'a, A: Copy>;
}
impl<T: CloneWeakFunctor> CopyWeakFunctor for T {
type CF<'a, A: Copy> = T::ClF<'a, A>;
type CF<'a, A: Copy>: Copy;
}
pub trait CopyFunctor: CopyWeakFunctor {
@ -23,23 +17,6 @@ pub trait CopyFunctor: CopyWeakFunctor {
}
}
impl<T: CloneFunctor> CopyFunctor for T {
fn copy_fmap<'a, A: 'a + Copy, B: 'a + Copy, F: 'a + Fn(A) -> B>(
f: F,
fa: Self::CF<'a, A>,
) -> Self::CF<'a, B> {
Self::clone_fmap(f, fa)
}
fn copy_replace<'a, A: 'a + Copy, B: 'a + Copy>(fa: Self::CF<'a, A>, b: B) -> Self::CF<'a, B> {
Self::clone_replace(fa, b)
}
fn copy_void<'a, A: 'a + Copy>(fa: Self::CF<'a, A>) -> Self::CF<'a, ()> {
Self::clone_void(fa)
}
}
pub trait CopyApplicativeSeq: CopyFunctor {
fn copy_seq<'a, A: 'a + Copy, B: 'a + Copy, F: 'a + Copy + Fn(A) -> B>(
ff: Self::CF<'a, F>,
@ -55,15 +32,6 @@ pub trait CopyApplicativeSeq: CopyFunctor {
}
}
impl<T: CloneApplicativeSeq> CopyApplicativeSeq for T {
fn copy_seq<'a, A: 'a + Copy, B: 'a + Copy, F: 'a + Copy + Fn(A) -> B>(
ff: Self::CF<'a, F>,
fa: Self::CF<'a, A>,
) -> Self::CF<'a, B> {
Self::clone_seq(ff, fa)
}
}
pub trait CopyApplicativeLA2: CopyFunctor {
fn copy_la2<'a, A: 'a + Copy, B: 'a + Copy, C: 'a + Copy, F: 'a + Copy + Fn(A, B) -> C>(
f: F,
@ -79,16 +47,6 @@ pub trait CopyApplicativeLA2: CopyFunctor {
}
}
impl<T: CloneApplicativeLA2> CopyApplicativeLA2 for T {
fn copy_la2<'a, A: 'a + Copy, B: 'a + Copy, C: 'a + Copy, F: 'a + Copy + Fn(A, B) -> C>(
f: F,
fa: Self::CF<'a, A>,
fb: Self::CF<'a, B>,
) -> Self::CF<'a, C> {
Self::clone_la2(f, fa, fb)
}
}
pub trait CopyApplicative: CopyFunctor + CopyApplicativeSeq + CopyApplicativeLA2 {
fn copy_pure<'a, A: 'a + Copy>(a: A) -> Self::CF<'a, A>;
@ -107,26 +65,6 @@ pub trait CopyApplicative: CopyFunctor + CopyApplicativeSeq + CopyApplicativeLA2
}
}
impl<T: CloneApplicative> CopyApplicative for T {
fn copy_pure<'a, A: 'a + Copy>(a: A) -> Self::CF<'a, A> {
Self::clone_pure(a)
}
fn copy_discard_first<'a, A: 'a + Copy, B: 'a + Copy>(
fa: Self::CF<'a, A>,
fb: Self::CF<'a, B>,
) -> Self::CF<'a, B> {
Self::clone_discard_first(fa, fb)
}
fn copy_discard_second<'a, A: 'a + Copy, B: 'a + Copy>(
fa: Self::CF<'a, A>,
fb: Self::CF<'a, B>,
) -> Self::CF<'a, A> {
Self::clone_discard_second(fa, fb)
}
}
pub trait CopyMonad: CopyApplicative {
fn copy_bind<'a, A: 'a + Copy, B: 'a + Copy, F: 'a + Copy + Fn(A) -> Self::CF<'a, B>>(
fa: Self::CF<'a, A>,
@ -135,25 +73,9 @@ pub trait CopyMonad: CopyApplicative {
fn copy_join<'a, A: 'a + Copy>(ffa: Self::CF<'a, Self::CF<'a, A>>) -> Self::CF<'a, A>
where
Self::CF<'a, A>: 'a + Copy,
Self::CF<'a, A>: 'a,
{
// ugly
Self::copy_bind(ffa, |fa| fa)
}
}
impl<T: CloneMonad> CopyMonad for T {
fn copy_bind<'a, A: 'a + Copy, B: 'a + Copy, F: 'a + Copy + Fn(A) -> Self::CF<'a, B>>(
fa: Self::CF<'a, A>,
f: F,
) -> Self::CF<'a, B> {
T::clone_bind(fa, f)
}
fn copy_join<'a, A: 'a + Copy>(ffa: Self::CF<'a, Self::CF<'a, A>>) -> Self::CF<'a, A>
where
Self::CF<'a, A>: 'a + Copy,
{
T::clone_join(ffa)
}
}