Vendor things

third-party/vendor/precomputed-hash/.cargo-checksum.json

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+{"files":{"Cargo.toml":"594bc4437727edbf58c7cb9f88c3c1d80e89439dd4a505ef4771f9f344819386","LICENSE":"7ca6700600dfa9c9497bf5556365067daa802c871ea78239f129309c7a2048f7","src/lib.rs":"079a5f369a82b4573cca488a8c52a8427546e9050c89964a7b554215dd4da5f1"},"package":"925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"}

third-party/vendor/precomputed-hash/Cargo.toml

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+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g. crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+name = "precomputed-hash"
+version = "0.1.1"
+authors = ["Emilio Cobos Álvarez <emilio@crisal.io>"]
+description = "A library intending to be a base dependency to expose a precomputed hash"
+license = "MIT"
+repository = "https://github.com/emilio/precomputed-hash"
+
+[dependencies]

third-party/vendor/precomputed-hash/LICENSE

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+MIT License
+
+Copyright (c) 2017 Emilio Cobos Álvarez
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third-party/vendor/precomputed-hash/src/lib.rs

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+//! A base trait to expose a precomputed hash for a type.
+
+/// A trait to expose a precomputed hash for a type.
+pub trait PrecomputedHash {
+    // TODO(emilio): Perhaps an associated type would be on point here.
+
+    /// Return the precomputed hash for this item.
+    fn precomputed_hash(&self) -> u32;
+}
+
+// These are equivalent to the `std::Hash` impls.
+impl<'a, T: PrecomputedHash> PrecomputedHash for &'a T {
+    fn precomputed_hash(&self) -> u32 {
+        (**self).precomputed_hash()
+    }
+}
+
+impl<'a, T: PrecomputedHash> PrecomputedHash for &'a mut T {
+    fn precomputed_hash(&self) -> u32 {
+        (**self).precomputed_hash()
+    }
+}