parseArrowFunction method

FunctionNode parseArrowFunction(Expression? exp)

Implementation

FunctionNode parseArrowFunction(Expression? exp) {
  int? start = token!.startOffset;
  // List<Name> params;
  // if (token!.type == Token.LPAREN) {
  //   params = parseParameters();
  // } else {
  //   params = <Name>[];
  // }
  List<Name> params = <Name>[];
  if (exp != null) {
    if (exp is SequenceExpression) {
      for (var e in exp.expressions) {
        if (e is NameExpression) {
          params.add(e.name);
        } else {
          throw fail();
        }
      }
    } else if (exp is NameExpression) {
      params.add(exp.name);
    } else {
      throw fail();
    }
  }
  consume(Token.ARROW);
  next();
  //Expression body = parseExpression();
  //return new FunctionNode(null, params, new BlockStatement([new ReturnStatement(body)]))
  BlockStatement body = parseArrowFunctionBody();
  return FunctionNode(null, params, body)
    ..start = start
    ..end = endOffset
    ..line = token!.line;
}