Language/Functions/syntax_t02.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 Functions include function declarations, methods, getters,
 * setters, constructors and function literals.
 * All functions have a signature and a body.
 * functionSignature:
 *   metadata returnType? identifier formalParameterList
 * ;
 * returnType: void | type
 * ;
 * functionBody:
 *   async? '=>' expression ';' | (async | async* | sync*)? block
 * ;
 * block:
 *   '{' statements '}'
 * ;
 *
 * @description Checks that returnType is optional
 *
 * @author msyabro
 * @reviewer kaigorodov
 * @reviewer iefremov
 */
import "../../Utils/expect.dart";

func(int x) => x + x + 1;
proc() {}

class A {
  f() {return () {return 20;};}
  g(int arg) {return arg + arg;}
  h(int arg) => f()() + g(arg);
}

main() {
  f() {}
  g() => 1;

  // now call every function to force the compiler to parse it
  Expect.equals(5, func(2));
  proc();
  Expect.equals(20, new A().f()());
  Expect.equals(10, new A().g(5));
  Expect.equals(22, new A().h(1));
  f();
  Expect.equals(1, g());
}