LanguageFeatures/Abstract-external-fields/syntax_A02_t03.dart

// Copyright (c) 2020, 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 The grammar is modified as follows:
 *
 * <topLevelDefinition> ::=
 *  ... |
 *  // New alternative.
 *  'external' <finalVarOrType> <identifierList> ';'
 *
 *  <finalVarOrType> ::= // New rule.
 *  'final' <type>? |
 *  <varOrType>
 *
 *  <declaration> ::=
 *  ... |
 *  // New alternative.
 *  'external' ('static'? <finalVarOrType> | 'covariant' <varOrType>)
 *  <identifierList> |
 * // New alternative.
 *  'abstract' (<finalVarOrType> | 'covariant' <varOrType>) <identifierList>
 *
 * @description Checks topLevelDefinition syntax
 * @author sgrekhov@unipro.ru
 */

class C {
  external final int i1, i2;
  external final x1, x2;

  test() {
    int j = i1;
    int k = i2;
    String s1 = x1;
    String s2 = x2;
  }
}

main() {
  new C();
}