bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Invert flow in impl HashStable of Span.

Browse source
This commit is contained in:
Camille GILLOT 2019-11-10 17:31:21 +01:00
parent 1de5fdb5ba
commit 640797fdd7
3 changed files with 22 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/libsyntax_pos/lib.rs
View file

@ -34,7 +34,7 @@ pub use symbol::{Symbol, sym};
mod analyze_source_file;
pub mod fatal_error;
use rustc_data_structures::stable_hasher::StableHasher;
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
use rustc_data_structures::sync::{Lrc, Lock};
use std::borrow::Cow;
@ -245,6 +245,14 @@ impl Ord for Span {
}
}
impl<CTX> HashStable<CTX> for Span
where CTX: StableHashingContextLike
{
fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {
ctx.hash_stable_span(self, hasher)
}
}
/// A collection of spans. Spans have two orthogonal attributes:
///
/// - They can be *primary spans*. In this case they are the locus of
@ -1566,4 +1574,6 @@ fn lookup_line(lines: &[BytePos], pos: BytePos) -> isize {
/// Requirements for a `StableHashingContext` to be used in this crate.
/// This is a hack to allow using the `HashStable_Generic` derive macro
/// instead of implementing everything in librustc.
pub trait StableHashingContextLike {}
pub trait StableHashingContextLike {
fn hash_stable_span(&mut self, span: &Span, hasher: &mut StableHasher);
}