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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package txemulator | ||
|
|
||
| import ( | ||
| "github.com/tonkeeper/tongo" | ||
| "github.com/tonkeeper/tongo/boc" | ||
| "github.com/tonkeeper/tongo/tlb" | ||
| ) | ||
|
|
||
| // FindLibraries looks for library cells inside the given cell tree and | ||
| // returns a list of hashes of found library cells. | ||
| func FindLibraries(cell *boc.Cell) ([]tongo.Bits256, error) { | ||
| libs, err := findLibraries(cell) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if len(libs) == 0 { | ||
| return nil, nil | ||
| } | ||
| hashes := make([]tongo.Bits256, 0, len(libs)) | ||
| for hash := range libs { | ||
| hashes = append(hashes, hash) | ||
| } | ||
| return hashes, nil | ||
| } | ||
|
|
||
| func findLibraries(cell *boc.Cell) (map[tongo.Bits256]struct{}, error) { | ||
| if cell.IsExotic() { | ||
| if cell.CellType() == boc.LibraryCell { | ||
| bytes, err := cell.ReadBytes(33) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var hash tongo.Bits256 | ||
| copy(hash[:], bytes[1:]) | ||
| return map[tongo.Bits256]struct{}{ | ||
| hash: {}, | ||
| }, nil | ||
| } | ||
| return nil, nil | ||
| } | ||
| var libs map[tongo.Bits256]struct{} | ||
| for _, ref := range cell.Refs() { | ||
| hashes, err := findLibraries(ref) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if libs == nil { | ||
| libs = hashes | ||
| continue | ||
| } | ||
| for hash := range hashes { | ||
| libs[hash] = struct{}{} | ||
| } | ||
| } | ||
| return libs, nil | ||
| } | ||
|
|
||
| // LibrariesToBase64 converts a map with libraries to a base64 string. | ||
| func LibrariesToBase64(libraries map[tongo.Bits256]*boc.Cell) (string, error) { | ||
| if len(libraries) == 0 { | ||
| return "", nil | ||
| } | ||
| hashes := make([]tlb.Bits256, 0, len(libraries)) | ||
| descriptions := make([]tlb.LibDescr, 0, len(libraries)) | ||
| for hash, cell := range libraries { | ||
| hashes = append(hashes, tlb.Bits256(hash)) | ||
| descriptions = append(descriptions, tlb.LibDescr{Lib: *cell}) | ||
| } | ||
| hashmap := tlb.NewHashmap[tlb.Bits256, tlb.LibDescr](hashes, descriptions) | ||
| libsCell := boc.NewCell() | ||
| if err := tlb.Marshal(libsCell, hashmap); err != nil { | ||
| return "", err | ||
| } | ||
| return libsCell.ToBocBase64() | ||
| } |
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