Use 128 instead of 64 bits for DefPath hashes

[rust.git] / src / librustc / ich / hcx.rs

diff --git a/src/librustc/ich/hcx.rs b/src/librustc/ich/hcx.rs
index 5ef30550f1155ec017d1eb3b713d248a85560807..f25ec8ecd4d71beee729bf73ba0107d38cc38fa8 100644 (file)
--- a/src/librustc/ich/hcx.rs
+++ b/src/librustc/ich/hcx.rs
@@ -13,8 +13,10 @@
 use ich::{self, CachingCodemapView};
 use session::config::DebugInfoLevel::NoDebugInfo;
 use ty;
+use util::nodemap::NodeMap;
 
 use std::hash as std_hash;
+use std::collections::{HashMap, HashSet, BTreeMap};
 
 use syntax::ast;
 use syntax::attr;
@@ -108,7 +110,7 @@ pub fn tcx(&self) -> ty::TyCtxt<'a, 'tcx, 'tcx> {
     }
 
     #[inline]
-    pub fn def_path_hash(&mut self, def_id: DefId) -> u64 {
+    pub fn def_path_hash(&mut self, def_id: DefId) -> ich::Fingerprint {
         self.tcx.def_path_hash(def_id)
     }
 
@@ -296,3 +298,75 @@ fn hash_stable<W: StableHasherResult>(&self,
         }
     }
 }
+
+pub fn hash_stable_hashmap<'a, 'tcx, K, V, R, SK, F, W>(hcx: &mut StableHashingContext<'a, 'tcx>,
+                                                        hasher: &mut StableHasher<W>,
+                                                        map: &HashMap<K, V, R>,
+                                                        extract_stable_key: F)
+    where K: Eq + std_hash::Hash,
+          V: HashStable<StableHashingContext<'a, 'tcx>>,
+          R: std_hash::BuildHasher,
+          SK: HashStable<StableHashingContext<'a, 'tcx>> + Ord + Clone,
+          F: Fn(&mut StableHashingContext<'a, 'tcx>, &K) -> SK,
+          W: StableHasherResult,
+{
+    let mut keys: Vec<_> = map.keys()
+                              .map(|k| (extract_stable_key(hcx, k), k))
+                              .collect();
+    keys.sort_unstable_by_key(|&(ref stable_key, _)| stable_key.clone());
+    keys.len().hash_stable(hcx, hasher);
+    for (stable_key, key) in keys {
+        stable_key.hash_stable(hcx, hasher);
+        map[key].hash_stable(hcx, hasher);
+    }
+}
+
+pub fn hash_stable_hashset<'a, 'tcx, K, R, SK, F, W>(hcx: &mut StableHashingContext<'a, 'tcx>,
+                                                     hasher: &mut StableHasher<W>,
+                                                     set: &HashSet<K, R>,
+                                                     extract_stable_key: F)
+    where K: Eq + std_hash::Hash,
+          R: std_hash::BuildHasher,
+          SK: HashStable<StableHashingContext<'a, 'tcx>> + Ord + Clone,
+          F: Fn(&mut StableHashingContext<'a, 'tcx>, &K) -> SK,
+          W: StableHasherResult,
+{
+    let mut keys: Vec<_> = set.iter()
+                              .map(|k| extract_stable_key(hcx, k))
+                              .collect();
+    keys.sort_unstable();
+    keys.hash_stable(hcx, hasher);
+}
+
+pub fn hash_stable_nodemap<'a, 'tcx, V, W>(hcx: &mut StableHashingContext<'a, 'tcx>,
+                                           hasher: &mut StableHasher<W>,
+                                           map: &NodeMap<V>)
+    where V: HashStable<StableHashingContext<'a, 'tcx>>,
+          W: StableHasherResult,
+{
+    hash_stable_hashmap(hcx, hasher, map, |hcx, node_id| {
+        hcx.tcx.hir.definitions().node_to_hir_id(*node_id).local_id
+    });
+}
+
+
+pub fn hash_stable_btreemap<'a, 'tcx, K, V, SK, F, W>(hcx: &mut StableHashingContext<'a, 'tcx>,
+                                                      hasher: &mut StableHasher<W>,
+                                                      map: &BTreeMap<K, V>,
+                                                      extract_stable_key: F)
+    where K: Eq + Ord,
+          V: HashStable<StableHashingContext<'a, 'tcx>>,
+          SK: HashStable<StableHashingContext<'a, 'tcx>> + Ord + Clone,
+          F: Fn(&mut StableHashingContext<'a, 'tcx>, &K) -> SK,
+          W: StableHasherResult,
+{
+    let mut keys: Vec<_> = map.keys()
+                              .map(|k| (extract_stable_key(hcx, k), k))
+                              .collect();
+    keys.sort_unstable_by_key(|&(ref stable_key, _)| stable_key.clone());
+    keys.len().hash_stable(hcx, hasher);
+    for (stable_key, key) in keys {
+        stable_key.hash_stable(hcx, hasher);
+        map[key].hash_stable(hcx, hasher);
+    }
+}