blob: 48fb98c1698085f5abdfc956c3041d50898d12bc [file] [log] [blame]
// 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 an extension declaration is a top-level declaration with a grammar
/// similar to:
/// <extension> ::=
/// `extension' <identifier>? <typeParameters>? `on' <type> `?'? `{'
/// memberDeclaration*
/// `}'
/// ...
/// The member declarations can be any non-abstract static or instance member
/// declaration except for instance variables and constructors, and they cannot
/// have the same name as a member declared by Object (==, hashCode , toString,
/// runtimeType or noSuchMethod)
/// @description Check that the member declarations can be any non-abstract
/// static or instance member
/// @author
import "../../Utils/expect.dart";
extension ExtendedList<T> on List<T> {
int get getter => this.length * 2;
List<T> operator -() => this.reversed.toList();
List<List<T>> split(int at) => <List<T>>[this.sublist(0, at), this.sublist(at)];
void set setter(int v) {this.length = v;}
static String get staticGetter => "List";
static void set staticSetter(String v) {staticVar = v;}
static String staticMethod(String s) => s;
static String staticVar = "Run, Forrest, run";
static const staticConst = "Nothing is constant, everything is changing";
main() {
List<String> list = ["Lily", "was", "here"];
Expect.equals(6, list.getter);
Expect.listEquals([["Lily"], ["was", "here"]], list.split(1));
Expect.listEquals(["here", "was", "Lily"], -list);
Expect.listEquals([["was", "here"], ["Lily"]], -list.split(1));
list.setter = 2;
Expect.equals(2, list.length);
Expect.equals("List", ExtendedList.staticGetter);
Expect.equals("Lily was here", ExtendedList.staticMethod("Lily was here"));
Expect.equals("Run, Forrest, run", ExtendedList.staticVar);
ExtendedList.staticSetter = "Lily was here";
Expect.equals("Lily was here", ExtendedList.staticVar);
Expect.equals("Nothing is constant, everything is changing", ExtendedList.staticConst);