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Cargo Format

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Run `cargo fmt` and ignore generated files
This commit is contained in:
Jeremy A. Kolb 2018-10-15 17:44:23 -04:00
parent 39cb6c6d3f
commit 61f3a438d3
76 changed files with 1936 additions and 1530 deletions
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63
crates/ra_syntax/src/algo/visit.rs
View file

@ -1,23 +1,31 @@
use crate::{AstNode, SyntaxNodeRef};
use std::marker::PhantomData;
use crate::{SyntaxNodeRef, AstNode};
pub fn visitor<'a, T>() -> impl Visitor<'a, Output=T> {
pub fn visitor<'a, T>() -> impl Visitor<'a, Output = T> {
EmptyVisitor { ph: PhantomData }
}
pub fn visitor_ctx<'a, T, C>(ctx: C) -> impl VisitorCtx<'a, Output=T, Ctx=C> {
EmptyVisitorCtx { ph: PhantomData, ctx }
pub fn visitor_ctx<'a, T, C>(ctx: C) -> impl VisitorCtx<'a, Output = T, Ctx = C> {
EmptyVisitorCtx {
ph: PhantomData,
ctx,
}
}
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<'a>,
F: FnOnce(N) -> Self::Output,
where
N: AstNode<'a>,
F: FnOnce(N) -> Self::Output,
{
Vis { inner: self, f, ph: PhantomData }
Vis {
inner: self,
f,
ph: PhantomData,
}
}
}
@ -26,16 +34,21 @@ pub trait VisitorCtx<'a>: Sized {
type Ctx;
fn accept(self, node: SyntaxNodeRef<'a>) -> Result<Self::Output, Self::Ctx>;
fn visit<N, F>(self, f: F) -> VisCtx<Self, N, F>
where N: AstNode<'a>,
F: FnOnce(N, Self::Ctx) -> Self::Output,
where
N: AstNode<'a>,
F: FnOnce(N, Self::Ctx) -> Self::Output,
{
VisCtx { inner: self, f, ph: PhantomData }
VisCtx {
inner: self,
f,
ph: PhantomData,
}
}
}
#[derive(Debug)]
struct EmptyVisitor<T> {
ph: PhantomData<fn() -> T>
ph: PhantomData<fn() -> T>,
}
impl<'a, T> Visitor<'a> for EmptyVisitor<T> {
@ -69,10 +82,10 @@ pub struct Vis<V, N, F> {
}
impl<'a, V, N, F> Visitor<'a> for Vis<V, N, F>
where
V: Visitor<'a>,
N: AstNode<'a>,
F: FnOnce(N) -> <V as Visitor<'a>>::Output,
where
V: Visitor<'a>,
N: AstNode<'a>,
F: FnOnce(N) -> <V as Visitor<'a>>::Output,
{
type Output = <V as Visitor<'a>>::Output;
@ -90,21 +103,19 @@ pub struct VisCtx<V, N, F> {
}
impl<'a, V, N, F> VisitorCtx<'a> for VisCtx<V, N, F>
where
V: VisitorCtx<'a>,
N: AstNode<'a>,
F: FnOnce(N, <V as VisitorCtx<'a>>::Ctx) -> <V as VisitorCtx<'a>>::Output,
where
V: VisitorCtx<'a>,
N: AstNode<'a>,
F: FnOnce(N, <V as VisitorCtx<'a>>::Ctx) -> <V as VisitorCtx<'a>>::Output,
{
type Output = <V as VisitorCtx<'a>>::Output;
type Ctx = <V as VisitorCtx<'a>>::Ctx;
fn accept(self, node: SyntaxNodeRef<'a>) -> Result<Self::Output, Self::Ctx> {
let VisCtx { inner, f, .. } = self;
inner.accept(node).or_else(|ctx|
match N::cast(node) {
None => Err(ctx),
Some(node) => Ok(f(node, ctx))
}
)
inner.accept(node).or_else(|ctx| match N::cast(node) {
None => Err(ctx),
Some(node) => Ok(f(node, ctx)),
})
}
}