diff options
Diffstat (limited to 'src/mbgl/tile/tile_id_hash.cpp')
-rw-r--r-- | src/mbgl/tile/tile_id_hash.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
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 |