Move SVH structure to data structures

Author: Mark-Simulacrum

src/librustc/hir/map/collector.rs

@@ -12,7 +12,7 @@ use super::*;
 use dep_graph::{DepGraph, DepKind, DepNodeIndex};
 use hir::def_id::{LOCAL_CRATE, CrateNum};
 use hir::intravisit::{Visitor, NestedVisitorMap};
-use hir::svh::Svh;
+use rustc_data_structures::svh::Svh;
 use ich::Fingerprint;
 use middle::cstore::CrateStore;
 use session::CrateDisambiguator;

src/librustc/hir/map/mod.rs

@@ -22,14 +22,14 @@ use hir::def_id::{CRATE_DEF_INDEX, DefId, LocalDefId, DefIndexAddressSpace};
 use middle::cstore::CrateStore;
 
 use rustc_target::spec::abi::Abi;
+use rustc_data_structures::svh::Svh;
 use syntax::ast::{self, Name, NodeId, CRATE_NODE_ID};
 use syntax::codemap::Spanned;
 use syntax::ext::base::MacroKind;
 use syntax_pos::{Span, DUMMY_SP};
 
 use hir::*;
 use hir::print::Nested;
-use hir::svh::Svh;
 use util::nodemap::FxHashMap;
 
 use std::io;

src/librustc/hir/mod.rs

@@ -70,7 +70,6 @@ pub mod lowering;
 pub mod map;
 pub mod pat_util;
 pub mod print;
-pub mod svh;
 
 /// A HirId uniquely identifies a node in the HIR of the current crate. It is
 /// composed of the `owner`, which is the DefIndex of the directly enclosing

src/librustc/middle/cstore.rs

@@ -25,7 +25,7 @@
 use hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
 use hir::map as hir_map;
 use hir::map::definitions::{DefKey, DefPathTable};
-use hir::svh::Svh;
+use rustc_data_structures::svh::Svh;
 use ty::{self, TyCtxt};
 use session::{Session, CrateDisambiguator};
 use session::search_paths::PathKind;

src/librustc/ty/mod.rs

@@ -18,7 +18,7 @@ use hir::{map as hir_map, FreevarMap, TraitMap};
 use hir::def::{Def, CtorKind, ExportMap};
 use hir::def_id::{CrateNum, DefId, LocalDefId, CRATE_DEF_INDEX, LOCAL_CRATE};
 use hir::map::DefPathData;
-use hir::svh::Svh;
+use rustc_data_structures::svh::Svh;
 use ich::Fingerprint;
 use ich::StableHashingContext;
 use infer::canonical::Canonical;

src/librustc/ty/query/mod.rs

@@ -13,7 +13,7 @@ use errors::DiagnosticBuilder;
 use hir::def_id::{CrateNum, DefId, DefIndex};
 use hir::def::{Def, Export};
 use hir::{self, TraitCandidate, ItemLocalId, CodegenFnAttrs};
-use hir::svh::Svh;
+use rustc_data_structures::svh::Svh;
 use infer::canonical::{self, Canonical};
 use lint;
 use middle::borrowck::BorrowCheckResult;

src/librustc_codegen_utils/link.rs

@@ -11,7 +11,7 @@
 use rustc::session::config::{self, OutputFilenames, Input, OutputType};
 use rustc::session::Session;
 use rustc::middle::cstore::LinkMeta;
-use rustc::hir::svh::Svh;
+use rustc_data_structures::svh::Svh;
 use std::path::{Path, PathBuf};
 use syntax::{ast, attr};
 use syntax_pos::Span;

src/librustc_data_structures/lib.rs

@@ -46,13 +46,15 @@ extern crate stable_deref_trait;
 extern crate rustc_rayon as rayon;
 extern crate rustc_rayon_core as rayon_core;
 extern crate rustc_hash;
+extern crate serialize;
 
 // See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
 #[allow(unused_extern_crates)]
 extern crate rustc_cratesio_shim;
 
 pub use rustc_serialize::hex::ToHex;
 
+pub mod svh;
 pub mod accumulate_vec;
 pub mod array_vec;
 pub mod base_n;

src/librustc/hir/svh.rs renamed to src/librustc_data_structures/svh.rs

@@ -19,6 +19,8 @@ use std::fmt;
 use std::hash::{Hash, Hasher};
 use serialize::{Encodable, Decodable, Encoder, Decoder};
 
+use stable_hasher;
+
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub struct Svh {
     hash: u64,
@@ -67,6 +69,16 @@ impl Decodable for Svh {
     }
 }
 
-impl_stable_hash_for!(struct Svh {
-    hash
-});
+impl<T> stable_hasher::HashStable<T> for Svh {
+    #[inline]
+    fn hash_stable<W: stable_hasher::StableHasherResult>(
+        &self,
+        ctx: &mut T,
+        hasher: &mut stable_hasher::StableHasher<W>
+    ) {
+        let Svh {
+            hash
+        } = *self;
+        hash.hash_stable(ctx, hasher);
+    }
+}

src/librustc_incremental/persist/fs.rs

@@ -114,11 +114,11 @@
 //! unsupported file system and emit a warning in that case. This is not yet
 //! implemented.
 
-use rustc::hir::svh::Svh;
 use rustc::session::{Session, CrateDisambiguator};
 use rustc::util::fs as fs_util;
 use rustc_data_structures::{flock, base_n};
 use rustc_data_structures::fx::{FxHashSet, FxHashMap};
+use rustc_data_structures::svh::Svh;
 
 use std::fs as std_fs;
 use std::io;