diff options
| -rw-r--r-- | plumbing/object/commit.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/plumbing/object/commit.go b/plumbing/object/commit.go index c5a1867..772ce17 100644 --- a/plumbing/object/commit.go +++ b/plumbing/object/commit.go @@ -3,6 +3,7 @@ package object import ( "bufio" "bytes" + "errors" "fmt" "io" "strings" @@ -91,6 +92,16 @@ func (c *Commit) NumParents() int { return len(c.ParentHashes) } +var ErrNoParents = errors.New("commit has no parents") + +// FirstParent returns the first parent of c. +func (c *Commit) FirstParent() (*Commit, error) { + if len(c.ParentHashes) == 0 { + return nil, ErrNoParents + } + return GetCommit(c.s, c.ParentHashes[0]) +} + // File returns the file with the specified "path" in the commit and a // nil error if the file exists. If the file does not exist, it returns // a nil file and the ErrFileNotFound error. |