doc: add object fields godoc

4 files changed, 21 insertions, 6 deletions

diff --git a/plumbing/object/blob.go b/plumbing/object/blob.go
index e44753c..4c9e84d 100644
--- a/plumbing/object/blob.go
+++ b/plumbing/object/blob.go
@@ -10,7 +10,9 @@ import (
 
 // Blob is used to store arbitrary data - it is generally a file.
 type Blob struct {
+	// Hash of the blob.
 	Hash plumbing.Hash
+	// Size of the (uncompressed) blob.
 	Size int64
 
 	obj plumbing.EncodedObject
diff --git a/plumbing/object/commit.go b/plumbing/object/commit.go
index 9bb1d3c..7238f5c 100644
--- a/plumbing/object/commit.go
+++ b/plumbing/object/commit.go
@@ -22,10 +22,15 @@ type Hash plumbing.Hash
 // commit, a pointer to the previous commit(s), etc.
 // http://schacon.github.io/gitbook/1_the_git_object_model.html
 type Commit struct {
-	Hash      plumbing.Hash
-	Author    Signature
+	// Hash of the commit object.
+	Hash plumbing.Hash
+	// Author is the original author of the commit.
+	Author Signature
+	// Committer is the one performing the commit, might be different from
+	// Author.
 	Committer Signature
-	Message   string
+	// Message is the commit message, contains arbitrary text.
+	Message string
 
 	tree    plumbing.Hash
 	parents []plumbing.Hash
diff --git a/plumbing/object/file.go b/plumbing/object/file.go
index 4caed6b..35e7f24 100644
--- a/plumbing/object/file.go
+++ b/plumbing/object/file.go
@@ -12,8 +12,12 @@ import (
 
 // File represents git file objects.
 type File struct {
+	// Name is the path of the file. It might be relative to a tree,
+	// depending of the function that generates it.
 	Name string
+	// Mode is the file mode.
 	Mode os.FileMode
+	// Blob with the contents of the file.
 	Blob
 }
 
diff --git a/plumbing/object/tag.go b/plumbing/object/tag.go
index 7792491..085e3f6 100644
--- a/plumbing/object/tag.go
+++ b/plumbing/object/tag.go
@@ -20,9 +20,13 @@ import (
 //
 // https://git-scm.com/book/en/v2/Git-Internals-Git-References#Tags
 type Tag struct {
-	Hash       plumbing.Hash
-	Name       string
-	Tagger     Signature
+	// Hash of the tag.
+	Hash plumbing.Hash
+	// Name of the tag.
+	Name string
+	// Tagger is the one who created the tag.
+	Tagger Signature
+	// Message is an arbitrary text message
 	Message    string
 	TargetType plumbing.ObjectType
 	Target     plumbing.Hash