From a06f4849bc58cbe21b001f1f15fd0828bde9b79b Mon Sep 17 00:00:00 2001
From: Jesse Crocker <jesse@gaiagps.com>
Date: Fri, 8 Sep 2017 13:56:11 -0700
Subject: [core] Move *TileID hashing to separate impl

---
 src/mbgl/tile/tile_id_hash.cpp | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 src/mbgl/tile/tile_id_hash.cpp

(limited to 'src/mbgl/tile/tile_id_hash.cpp')

diff --git a/src/mbgl/tile/tile_id_hash.cpp b/src/mbgl/tile/tile_id_hash.cpp
new file mode 100644
index 0000000000..4a1f185817
--- /dev/null
+++ b/src/mbgl/tile/tile_id_hash.cpp
@@ -0,0 +1,29 @@
+#include <mbgl/tile/tile_id.hpp>
+
+#include <boost/functional/hash.hpp>
+
+namespace std {
+
+size_t hash<mbgl::CanonicalTileID>::operator()(const mbgl::CanonicalTileID& id) const {
+    std::size_t seed = 0;
+    boost::hash_combine(seed, id.x);
+    boost::hash_combine(seed, id.y);
+    boost::hash_combine(seed, id.z);
+    return seed;
+}
+
+size_t hash<mbgl::UnwrappedTileID>::operator()(const mbgl::UnwrappedTileID& id) const {
+    std::size_t seed = 0;
+    boost::hash_combine(seed, std::hash<mbgl::CanonicalTileID>{}(id.canonical));
+    boost::hash_combine(seed, id.wrap);
+    return seed;
+}
+
+size_t hash<mbgl::OverscaledTileID>::operator()(const mbgl::OverscaledTileID& id) const {
+    std::size_t seed = 0;
+    boost::hash_combine(seed, std::hash<mbgl::CanonicalTileID>{}(id.canonical));
+    boost::hash_combine(seed, id.overscaledZ);
+    return seed;
+}
+
+} // namespace std
-- 
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