rust: add a ObjectID struct
We'd like to be able to write some Rust code that can work with object IDs. Add a structure here that's identical to struct object_id in C, for easy use in sharing across the FFI boundary. We will use this structure in several places in hot paths, such as index-pack or pack-objects when converting between algorithms, so prioritize efficient interchange over a more idiomatic Rust approach. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
brian m. carlson committed
Feb 7, 2026 at 20:04 UTC
b674d1036a3a82aaccfd5586007006f1f08648ef
4 files changed
+24
Makefile
+1
index 8aa489f3b6..88ae4c4b2f 100644
--- a/Makefile
+++ b/Makefile
@@ -1545,6 +1545,7 @@ CLAR_TEST_OBJS += $(UNIT_TEST_DIR)/unit-test.o
UNIT_TEST_OBJS += $(UNIT_TEST_DIR)/test-lib.o
+RUST_SOURCES += src/hash.rs
RUST_SOURCES += src/lib.rs
RUST_SOURCES += src/varint.rs
src/hash.rs
+21
new file mode 100644
index 0000000000..0219391820
--- /dev/null
+++ b/src/hash.rs
@@ -0,0 +1,21 @@
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation: version 2 of the License, dated June 1991.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <https://www.gnu.org/licenses/>.
+
+pub const GIT_MAX_RAWSZ: usize = 32;
+
+/// A binary object ID.
+#[repr(C)]
+#[derive(Debug, Clone, Ord, PartialOrd, Eq, PartialEq)]
+pub struct ObjectID {
+ pub hash: [u8; GIT_MAX_RAWSZ],
+ pub algo: u32,
+}
src/lib.rs
+1
index 9da70d8b57..cf7c962509 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1 +1,2 @@
+pub mod hash;
pub mod varint;
src/meson.build
+1
index 25b9ad5a14..c77041a3fa 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -1,4 +1,5 @@
libgit_rs_sources = [
+ 'hash.rs',
'lib.rs',
'varint.rs',
]