stylo: Add hash module for reexporting HashMap

components/style/hash.rs

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Reexports of hashglobe types in Gecko mode, and stdlib hashmap shims in Servo mode
+//!
+//! Can go away when the stdlib gets fallible collections
+//! https://github.com/rust-lang/rfcs/pull/2116
+
+use fnv;
+
+#[cfg(feature = "gecko")]
+pub use hashglobe::hash_map::HashMap;
+#[cfg(feature = "gecko")]
+pub use hashglobe::hash_set::HashSet;
+
+
+#[cfg(feature = "servo")]
+pub use hashglobe::fake::{HashMap, HashSet};
+
+/// Appropriate reexports of hash_map types
+pub mod map {
+    #[cfg(feature = "gecko")]
+    pub use hashglobe::hash_map::{Entry, Iter};
+    #[cfg(feature = "servo")]
+    pub use std::collections::hash_map::{Entry, Iter};
+}
+
+/// Hash map that uses the FNV hasher
+pub type FnvHashMap<K, V> = HashMap<K, V, fnv::FnvBuildHasher>;
+/// Hash set that uses the FNV hasher
+pub type FnvHashSet<T> = HashSet<T, fnv::FnvBuildHasher>;

components/style/lib.rs

@@ -49,6 +49,7 @@ extern crate bitflags;
 extern crate euclid;
 extern crate fnv;
 #[cfg(feature = "gecko")] #[macro_use] pub mod gecko_string_cache;
+extern crate hashglobe;
 #[cfg(feature = "servo")] extern crate heapsize;
 #[cfg(feature = "servo")] #[macro_use] extern crate heapsize_derive;
 extern crate itertools;
@@ -112,6 +113,7 @@ pub mod font_face;
 pub mod font_metrics;
 #[cfg(feature = "gecko")] #[allow(unsafe_code)] pub mod gecko;
 #[cfg(feature = "gecko")] #[allow(unsafe_code)] pub mod gecko_bindings;
+pub mod hash;
 pub mod invalidation;
 #[allow(missing_docs)] // TODO.
 pub mod logical_geometry;