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Borrowed AST

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This commit is contained in:
Aleksey Kladov 2018-08-17 22:00:13 +03:00
parent 70097504f7
commit d3c90ded2b
16 changed files with 350 additions and 343 deletions
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6
crates/libsyntax2/src/algo/visit.rs
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@ -1,5 +1,5 @@
use std::marker::PhantomData;
use {SyntaxNodeRef, AstNode, RefRoot};
use {SyntaxNodeRef, AstNode};
pub fn visitor<'a, T>() -> impl Visitor<'a, Output=T> {
@ -10,7 +10,7 @@ pub trait Visitor<'a>: Sized {
type Output;
fn accept(self, node: SyntaxNodeRef<'a>) -> Option<Self::Output>;
fn visit<N, F>(self, f: F) -> Vis<Self, N, F>
where N: AstNode<RefRoot<'a>>,
where N: AstNode<'a>,
F: FnOnce(N) -> Self::Output,
{
Vis { inner: self, f, ph: PhantomData }
@ -40,7 +40,7 @@ pub struct Vis<V, N, F> {
impl<'a, V, N, F> Visitor<'a> for Vis<V, N, F>
where
V: Visitor<'a>,
N: AstNode<RefRoot<'a>>,
N: AstNode<'a>,
F: FnOnce(N) -> <V as Visitor<'a>>::Output,
{
type Output = <V as Visitor<'a>>::Output;