void visitBlock()

in lib/src/source_visitor.dart [477:525]
36 lines of code
10 McCabe index (conditional complexity)

  void visitBlock(Block node) {
    // Treat empty blocks specially. In most cases, they are not allowed to
    // split. However, an empty block as the then statement of an if with an
    // else is always split.
    if (_isEmptyCollection(node.statements, node.rightBracket)) {
      token(node.leftBracket);
      if (_splitEmptyBlock(node)) newline();
      token(node.rightBracket);
      return;
    }

    // If the block is a function body, it may get expression-level indentation,
    // so handle it specially. Otherwise, just bump the indentation and keep it
    // in the current block.
    if (node.parent is BlockFunctionBody) {
      _startLiteralBody(node.leftBracket);
    } else {
      _beginBody(node.leftBracket);
    }

    var needsDouble = true;
    for (var statement in node.statements) {
      if (needsDouble) {
        twoNewlines();
      } else {
        oneOrTwoNewlines();
      }

      visit(statement);

      needsDouble = false;
      if (statement is FunctionDeclarationStatement) {
        // Add a blank line after non-empty block functions.
        var body = statement.functionDeclaration.functionExpression.body;
        if (body is BlockFunctionBody) {
          needsDouble = body.block.statements.isNotEmpty;
        }
      }
    }

    if (node.statements.isNotEmpty) newline();

    if (node.parent is BlockFunctionBody) {
      _endLiteralBody(node.rightBracket,
          forceSplit: node.statements.isNotEmpty);
    } else {
      _endBody(node.rightBracket);
    }
  }