Retire impl_stable_hash_for_spanned.

Author: cjgillot

src/librustc/ich/impls_hir.rs

@@ -9,7 +9,6 @@ use crate::ich::{StableHashingContext, NodeIdHashingMode, Fingerprint};
 use rustc_data_structures::stable_hasher::{HashStable, ToStableHashKey, StableHasher};
 use smallvec::SmallVec;
 use std::mem;
-use syntax::ast;
 use syntax::attr;
 
 impl<'a> HashStable<StableHashingContext<'a>> for DefId {
@@ -134,10 +133,6 @@ impl<'a> HashStable<StableHashingContext<'a>> for hir::Ty {
     }
 }
 
-impl_stable_hash_for_spanned!(hir::BinOpKind);
-
-impl_stable_hash_for_spanned!(ast::Name);
-
 impl<'a> HashStable<StableHashingContext<'a>> for hir::Expr {
     fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
         hcx.while_hashing_hir_bodies(true, |hcx| {
@@ -155,8 +150,6 @@ impl<'a> HashStable<StableHashingContext<'a>> for hir::Expr {
     }
 }
 
-impl_stable_hash_for_spanned!(usize);
-
 impl<'a> HashStable<StableHashingContext<'a>> for hir::TraitItem {
     fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
         let hir::TraitItem {
@@ -225,8 +218,6 @@ impl<'a> HashStable<StableHashingContext<'a>> for hir::VisibilityKind {
     }
 }
 
-impl_stable_hash_for_spanned!(hir::VisibilityKind);
-
 impl<'a> HashStable<StableHashingContext<'a>> for hir::Mod {
     fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
         let hir::Mod {
@@ -254,9 +245,6 @@ impl<'a> HashStable<StableHashingContext<'a>> for hir::Mod {
     }
 }
 
-impl_stable_hash_for_spanned!(hir::Variant);
-
-
 impl<'a> HashStable<StableHashingContext<'a>> for hir::Item {
     fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
         let hir::Item {

src/librustc/ich/impls_syntax.rs

@@ -18,8 +18,6 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 
 impl<'ctx> rustc_target::StableHashingContextLike for StableHashingContext<'ctx> {}
 
-impl_stable_hash_for_spanned!(::syntax::ast::LitKind);
-
 impl_stable_hash_for!(struct ::syntax::ast::Lifetime { id, ident });
 
 impl<'a> HashStable<StableHashingContext<'a>> for [ast::Attribute] {

src/librustc/macros.rs

@@ -166,23 +166,6 @@ macro_rules! impl_stable_hash_for {
     };
 }
 
-#[macro_export]
-macro_rules! impl_stable_hash_for_spanned {
-    ($T:path) => (
-
-        impl HashStable<StableHashingContext<'a>> for ::syntax::source_map::Spanned<$T>
-        {
-            #[inline]
-            fn hash_stable(&self,
-                           hcx: &mut StableHashingContext<'a>,
-                           hasher: &mut StableHasher) {
-                self.node.hash_stable(hcx, hasher);
-                self.span.hash_stable(hcx, hasher);
-            }
-        }
-    );
-}
-
 ///////////////////////////////////////////////////////////////////////////
 // Lift and TypeFoldable macros
 //

src/libsyntax_pos/source_map.rs

@@ -39,7 +39,7 @@ pub fn original_sp(sp: Span, enclosing_sp: Span) -> Span {
     }
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy)]
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy, HashStable_Generic)]
 pub struct Spanned<T> {
     pub node: T,
     pub span: Span,