31 lines
1.0 KiB
Rust
31 lines
1.0 KiB
Rust
use std::rc::Rc;
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use crate::func::*;
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pub type NodeRc<'a, BT> = Rc<<BT as BinaryTrees<'a>>::Node>;
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pub type ReferenceRc<'a, BT> = Rc<<BT as BinaryTrees<'a>>::Reference>;
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pub type TreeRc<'a, BT> = Rc<<BT as BinaryTrees<'a>>::Tree>;
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pub type KeyRc<'a, BT> = Rc<<BT as BinaryTrees<'a>>::Key>;
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pub type Split<'a, BT> = (TreeRc<'a, BT>, TreeRc<'a, BT>, KeyRc<'a, BT>);
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pub type Wrapped<'a, BT, A> = <<BT as BinaryTrees<'a>>::T as WeakFunctor>::F<'a, A>;
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pub trait BinaryTrees<'a>: 'a {
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type Node: 'a;
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type Reference: 'a;
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type Tree: 'a;
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type Key: 'a;
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type T: 'a + Monad;
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fn split(node: Self::Node) -> Wrapped<'a, Self, Split<'a, Self>>;
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fn to_tree(node: Self::Node) -> TreeRc<'a, Self>;
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fn to_tree_construct(&self, node: Self::Node) -> TreeRc<'a, Self> {
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Self::to_tree(node)
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}
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fn resolve(reference: Self::Reference) -> Wrapped<'a, Self, NodeRc<'a, Self>>;
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fn equal(rhs: Self::Reference, lhs: Self::Reference) -> bool;
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fn refer(tree: Self::Tree) -> Option<ReferenceRc<'a, Self>>;
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}
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