Function NewCommitPreorderIter

plumbing/object/commit_walker.go:26–42

NewCommitPreorderIter returns a CommitIter that walks the commit history, starting at the given commit and visiting its parents in pre-order. The given callback will be called for each visited commit. Each commit will be visited only once. If the callback returns an error, walking will stop and will

(
	c *Commit,
	seenExternal map[plumbing.Hash]bool,
	ignore []plumbing.Hash,
)

// cannot be traversed (e.g. missing objects). Ignore allows to skip some
// commits from being iterated.
func NewCommitPreorderIter(
	c *Commit,
	seenExternal map[plumbing.Hash]bool,
	ignore []plumbing.Hash,
) CommitIter {
	seen := make(map[plumbing.Hash]bool)
	for _, h := range ignore {
		seen[h] = true
	}

	return &commitPreIterator{
		seenExternal: seenExternal,
		seen:         seen,
		stack:        make([]CommitIter, 0),
		start:        c,
	}
}

func (w *commitPreIterator) Next() (*Commit, error) {
	var c *Commit