Language/Types/Type_Aliases/syntax_t06.dart

/*
 * Copyright (c) 2019, 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 type alias declares a name for a type expression.
 * <typeAlias> ::=<metadata> typedef <typeIdentifier> <typeParameters>?‘=’<type>
 * ‘;’
 * | <metadata> typedef <functionTypeAlias>
 *  <functionTypeAlias> ::= <functionPrefix> <formalParameterPart> ‘;’
 *  <functionPrefix> ::= <type>? <identifier>
 * @description Checks that it is a compile error if type alias is wrongly
 * placed
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases

const int meta = 1;

class A {}

class C {
  static void s() {
    typedef Alias1 = A;                     //# 01: compile-time error
  }

  void m() {
    typedef Alias2 = A;                     //# 02: compile-time error
  }
}

test() {
  @meta typedef Alias3 = A;                 //# 03: compile-time error
}

main() {
  @meta typedef Alias4 = A;                 //# 04: compile-time error
}