cfg_traits/
lib.rs

1#![no_std]
2
3use core::{iter::once, ops::Index};
4
5extern crate alloc;
6use alloc::boxed::Box;
7use alloc::vec;
8use alloc::vec::Vec;
9
10use arena_traits::Arena;
11use either::Either;
12// pub mod op;
13pub trait Func {
14    // type Value;
15    type Block;
16    // type Values: Arena<Self::Value, Output: Value<Self>>;
17    type Blocks: Arena<Self::Block, Output: Block<Self>>;
18    // fn values(&self) -> &Self::Values;
19    fn blocks(&self) -> &Self::Blocks;
20    // fn values_mut(&mut self) -> &mut Self::Values;
21    fn blocks_mut(&mut self) -> &mut Self::Blocks;
22    fn entry(&self) -> Self::Block;
23}
24// pub type ValueI<F> = <<F as Func>::Values as Index<<F as Func>::Value>>::Output;
25pub type BlockI<F> = <<F as Func>::Blocks as Index<<F as Func>::Block>>::Output;
26pub type TermI<F> = <BlockI<F> as Block<F>>::Terminator;
27pub type TargetI<F> = <TermI<F> as Term<F>>::Target;
28
29
30pub trait Block<F: Func<Blocks: Arena<F::Block, Output = Self>> + ?Sized> {
31    type Terminator: Term<F>;
32    fn term(&self) -> &Self::Terminator;
33    fn term_mut(&mut self) -> &mut Self::Terminator;
34}
35
36
37
38pub trait Target<F: Func + ?Sized>: Term<F, Target = Self> {
39    fn block(&self) -> F::Block;
40    fn block_mut(&mut self) -> &mut F::Block;
41}
42pub trait Term<F: Func + ?Sized> {
43    type Target: Target<F>;
44    fn targets<'a>(&'a self) -> Box<dyn Iterator<Item = &'a Self::Target> + 'a>
45    where
46        F: 'a;
47    fn targets_mut<'a>(&'a mut self) -> Box<dyn Iterator<Item = &'a mut Self::Target> + 'a>
48    where
49        F: 'a;
50}
51
52impl<F: Func + ?Sized, T: Target<F>, A: Term<F, Target = T>, B: Term<F, Target = T>> Term<F>
53    for Either<A, B>
54{
55    type Target = T;
56
57    fn targets<'a>(&'a self) -> Box<(dyn Iterator<Item = &'a T> + 'a)>
58    where
59        F: 'a,
60    {
61        match self {
62            Either::Left(a) => a.targets(),
63            Either::Right(b) => b.targets(),
64        }
65    }
66
67    fn targets_mut<'a>(&'a mut self) -> Box<(dyn Iterator<Item = &'a mut T> + 'a)>
68    where
69        F: 'a,
70    {
71        match self {
72            Either::Left(a) => a.targets_mut(),
73            Either::Right(b) => b.targets_mut(),
74        }
75    }
76}
cfg_traits/lib.rs

cfg_traits/
lib.rs
