From ad18ac06566b7fead9123ea588d516e7bcc9fd15 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 2 Apr 2026 07:21:57 +0000
Subject: object/id: Add algorithm

---
 object/id/algorithm.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 object/id/algorithm.go

(limited to 'object/id/algorithm.go')

diff --git a/object/id/algorithm.go b/object/id/algorithm.go
new file mode 100644
index 00000000..47a1b02a
--- /dev/null
+++ b/object/id/algorithm.go
@@ -0,0 +1,17 @@
+package id
+
+// Algorithm identifies the hash algorithm used for Git object IDs.
+type Algorithm uint8
+
+const (
+	// AlgorithmUnknown identifies an unknown object ID hash algorithm.
+	AlgorithmUknown Algorithm = iota
+
+	// AlgorithmSHA1 identifies the SHA-1 object ID hash algorithm.
+	// This is the default for all versions of Git until Git 3.0.
+	AlgorithmSHA1
+
+	// AlgorithmSHA256 identifies the SHA-256 object ID hash algorithm.
+	// This is the default for Git 3.0 and beyond.
+	AlgorithmSHA256
+)
-- 
cgit v1.3.1-10-gc9f91