hashTreeToString function

String hashTreeToString(List tree)

Make a human readable string out of a hash tree. @param tree

Implementation

String hashTreeToString(List tree) {
  indent(String s) => s.split('\n').map((x) => '  ' + x).join('\n');

  switch (tree[0]) {
    case 0:
      return '()';
    case 1:
      {
        final left = hashTreeToString(tree[1] as List);
        final right = hashTreeToString(tree[2] as List);
        return "sub(\n left:\n${indent(left)}\n---\n right:\n${indent(right)}\n)";
      }
    case 2:
      {
        final label = u8aToString(tree[1] as Uint8List, useDartEncode: true);
        final sub = hashTreeToString(tree[2] as List);
        return "label(\n label:\n${indent(label)}\n sub:\n${indent(sub)}\n)";
      }
    case 3:
      {
        return "leaf(...${(tree[1] as Uint8List).lengthInBytes} bytes)";
      }
    case 4:
      {
        return "pruned(${blobToHex(tree[1] as Uint8List)}";
      }
    default:
      {
        return "unknown(${jsonEncode(tree[0])})";
      }
  }
}