diff options
Diffstat (limited to 'source/blender/blenlib/intern/uuid.cc')
| -rw-r--r-- | source/blender/blenlib/intern/uuid.cc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/uuid.cc b/source/blender/blenlib/intern/uuid.cc index fe237b8aae6..3c86238036c 100644 --- a/source/blender/blenlib/intern/uuid.cc +++ b/source/blender/blenlib/intern/uuid.cc @@ -27,6 +27,7 @@ #include <random> #include <sstream> #include <string> +#include <tuple> /* Ensure the UUID struct doesn't have any padding, to be compatible with memcmp(). */ static_assert(sizeof(bUUID) == 16, "expect UUIDs to be 128 bit exactly"); @@ -189,4 +190,22 @@ bool operator!=(const bUUID uuid1, const bUUID uuid2) return !(uuid1 == uuid2); } +bool operator<(const bUUID uuid1, const bUUID uuid2) +{ + auto simple_fields1 = std::tie(uuid1.time_low, + uuid1.time_mid, + uuid1.time_hi_and_version, + uuid1.clock_seq_hi_and_reserved, + uuid1.clock_seq_low); + auto simple_fields2 = std::tie(uuid2.time_low, + uuid2.time_mid, + uuid2.time_hi_and_version, + uuid2.clock_seq_hi_and_reserved, + uuid2.clock_seq_low); + if (simple_fields1 == simple_fields2) { + return std::memcmp(uuid1.node, uuid2.node, sizeof(uuid1.node)) < 0; + } + return simple_fields1 < simple_fields2; +} + } // namespace blender |