Fix missed lib handling

liteapi/client.go

@@ -355,7 +355,17 @@ func (c *Client) GetBlock(ctx context.Context, blockID ton.BlockIDExt) (tlb.Bloc
 	if len(cells) != 1 {
 		return tlb.Block{}, boc.ErrNotSingleRoot
 	}
-	decoder := tlb.NewDecoder()
+	decoder := tlb.NewDecoder().WithLibraryResolver(func(hash tlb.Bits256) (*boc.Cell, error) {
+		localLibs, err := c.GetLibraries(ctx, []ton.Bits256{ton.Bits256(hash)})
+		if err != nil {
+			return nil, err
+		}
+		if len(localLibs) == 0 {
+			return nil, fmt.Errorf("library not found")
+		}
+		return localLibs[ton.Bits256(hash)], nil
+
+	})
 	var block tlb.Block
 	if err := decoder.Unmarshal(cells[0], &block); err != nil {
 		return tlb.Block{}, err

tlb/decoder.go

@@ -113,7 +113,19 @@ func decode(c *boc.Cell, tag string, val reflect.Value, decoder *Decoder) error
 			return err
 		}
 		if c.IsLibrary() {
-			return fmt.Errorf("library cell as a ref is not implemented")
+			if decoder.resolveLib == nil {
+				// use WithLibraryResolver to provide a library resolver
+				return fmt.Errorf("library cell decoding is not configured properly")
+			}
+			hash, err := c.Hash256()
+			if err != nil {
+				return err
+			}
+			cell, err := decoder.resolveLib(hash)
+			if err != nil {
+				return err
+			}
+			c = cell
 		}
 		if c.CellType() == boc.PrunedBranchCell {
 			return nil
@@ -134,7 +146,19 @@ func decode(c *boc.Cell, tag string, val reflect.Value, decoder *Decoder) error
 			return err
 		}
 		if c.IsLibrary() {
-			return fmt.Errorf("library cell as a ref is not implemented")
+			if decoder.resolveLib == nil {
+				// use WithLibraryResolver to provide a library resolver
+				return fmt.Errorf("library cell decoding is not configured properly")
+			}
+			hash, err := c.Hash256()
+			if err != nil {
+				return err
+			}
+			cell, err := decoder.resolveLib(hash)
+			if err != nil {
+				return err
+			}
+			c = cell
 		}
 		if c.CellType() == boc.PrunedBranchCell {
 			return nil