Language/Statements/Local_Function_Declaration/syntax_t04.dart

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion A function declaration statement declares a new local function.
///   localFunctionDeclaration:
///     functionSignature functionBody
///   ;
/// functionSignature:
///   metadata returnType? identifier formalParameterList
/// ;
/// returnType:
///   void |
///   type
/// ;
/// functionBody:
///   async? ‘=>’ expression ‘;’ |
///   (async | async* | sync*)?  block
/// ;
/// block:
///   '{' statements '}'
/// ;
/// @description Checks that when a local function declared with the function
/// body of a form (1) `=> expession` it may have `async` before a function body,
/// (2) 'block` it may have async, async* and sync* a block.
/// @author ngl@unipro.ru


main() {
  f0() async => 3;
  f1() async {}
  f2() async* {}
  f3() sync* {};
}