Language/Statements/Switch/execution_t01.dart

// Copyright (c) 2011, 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 Execution of a switch statement of the form
 * switch (e) {
 *   label11 … label1j1 case e1: s1
 * …
 *   labeln1 ..labelnjn case en: sn
 *   label(n+1)1 ..label(n+1)jn default: sn+1
 * }
 * or the form
 * switch (e) {
 *   label11 … label1j1 case e1: s1
 * …
 *   labeln1 ..labelnjn case en: sn
 * }
 * proceeds as follows:
 * The statement var id = e; is evaluated, where id is a variable whose name is
 * distinct from any other variable in the program. It is a compile time error
 * if the value of e is not an instance of the same type as the constants
 * e1 … en.
 * Next, the case clause case e1: s1 is executed if it exists. If case e1: s1
 * does not exist, then if there is a default clause it is executed by
 * executing sn+1.
 * @description Checks that if the value of expression e is not an instance of
 * the same type as the constants of case clauses, then it is a compile error
 * @compile-error
 * @author msyabro
 */

main() {
   switch (1) {
     case '1': break;
     case '2': break;
     default:
   }

  switch ('abc') {
    case 1: break;
  }
}