package commitgraph import ( "github.com/go-git/go-git/v5/plumbing" ) // MemoryIndex provides a way to build the commit-graph in memory // for later encoding to file. // // Deprecated: This package uses the wrong types for Generation and Index in CommitData. // Use the v2 package instead. type MemoryIndex struct { commitData []*CommitData indexMap map[plumbing.Hash]int } // NewMemoryIndex creates in-memory commit graph representation // // Deprecated: This package uses the wrong types for Generation and Index in CommitData. // Use the v2 package instead. func NewMemoryIndex() *MemoryIndex { return &MemoryIndex{ indexMap: make(map[plumbing.Hash]int), } } // GetIndexByHash gets the index in the commit graph from commit hash, if available func (mi *MemoryIndex) GetIndexByHash(h plumbing.Hash) (int, error) { i, ok := mi.indexMap[h] if ok { return i, nil } return 0, plumbing.ErrObjectNotFound } // GetCommitDataByIndex gets the commit node from the commit graph using index // obtained from child node, if available func (mi *MemoryIndex) GetCommitDataByIndex(i int) (*CommitData, error) { if i >= len(mi.commitData) { return nil, plumbing.ErrObjectNotFound } commitData := mi.commitData[i] // Map parent hashes to parent indexes if commitData.ParentIndexes == nil { parentIndexes := make([]int, len(commitData.ParentHashes)) for i, parentHash := range commitData.ParentHashes { var err error if parentIndexes[i], err = mi.GetIndexByHash(parentHash); err != nil { return nil, err } } commitData.ParentIndexes = parentIndexes } return commitData, nil } // Hashes returns all the hashes that are available in the index func (mi *MemoryIndex) Hashes() []plumbing.Hash { hashes := make([]plumbing.Hash, 0, len(mi.indexMap)) for k := range mi.indexMap { hashes = append(hashes, k) } return hashes } // Add adds new node to the memory index func (mi *MemoryIndex) Add(hash plumbing.Hash, commitData *CommitData) { // The parent indexes are calculated lazily in GetNodeByIndex // which allows adding nodes out of order as long as all parents // are eventually resolved commitData.ParentIndexes = nil mi.indexMap[hash] = len(mi.commitData) mi.commitData = append(mi.commitData, commitData) }