// Copyright (c) 2013, 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.

library test.invoke_call_through_getter;

import 'dart:mirrors';

import 'package:expect/expect.dart';

class FakeFunctionCall {
  call(x, y) => '1 $x $y';
}
class FakeFunctionNSM {
  noSuchMethod(msg) => msg.positionalArguments.join(', ');
}

class C {
  get fakeFunctionCall => new FakeFunctionCall();
  get fakeFunctionNSM => new FakeFunctionNSM();
  get closure => (x, y) => '2 $this $x $y';
  get closureOpt => (x, y, [z, w]) => '3 $this $x $y $z $w';
  get closureNamed => (x, y, {z, w}) => '4 $this $x $y $z $w';
  get notAClosure => 'Not a closure';
  noSuchMethod(msg) => 'DNU';

  toString() => 'C';
}

testInstanceBase() {
  var c = new C();

  Expect.equals('1 5 6', c.fakeFunctionCall(5, 6));
  Expect.equals('7, 8', c.fakeFunctionNSM(7, 8));
  Expect.equals('2 C 9 10', c.closure(9, 10));
  Expect.equals('3 C 11 12 13 null', c.closureOpt(11, 12, 13));
  Expect.equals('4 C 14 15 null 16', c.closureNamed(14, 15, w: 16));
  Expect.equals('DNU', c.doesNotExist(17, 18));
  Expect.throws(() => c.closure('wrong arity'), (e) => e is NoSuchMethodError);
  Expect.throws(() => c.notAClosure(), (e) => e is NoSuchMethodError);
}

testInstanceReflective() {
  InstanceMirror im = reflect(new C());

  Expect.equals('1 5 6',
                im.invoke(#fakeFunctionCall, [5, 6]).reflectee);
  Expect.equals('7, 8',
                im.invoke(#fakeFunctionNSM, [7, 8]).reflectee);
  Expect.equals('2 C 9 10',
                im.invoke(#closure, [9, 10]).reflectee);
  Expect.equals('3 C 11 12 13 null',
                im.invoke(#closureOpt, [11, 12, 13]).reflectee);
  Expect.equals('4 C 14 15 null 16',                                        /// named: ok
                im.invoke(#closureNamed, [14, 15], {#w: 16}).reflectee);    /// named: continued
  Expect.equals('DNU',
                im.invoke(#doesNotExist, [17, 18]).reflectee);
  Expect.throws(() => im.invoke(#closure, ['wrong arity']),
                (e) => e is NoSuchMethodError);
  Expect.throws(() => im.invoke(#notAClosure, []),
                (e) => e is NoSuchMethodError);
}

class D {
  static get fakeFunctionCall => new FakeFunctionCall();
  static get fakeFunctionNSM => new FakeFunctionNSM();
  static get closure => (x, y) => '2 $x $y';
  static get closureOpt => (x, y, [z, w]) => '3 $x $y $z $w';
  static get closureNamed => (x, y, {z, w}) => '4 $x $y $z $w';
  static get notAClosure => 'Not a closure';
}

testClassBase() {
  Expect.equals('1 5 6', D.fakeFunctionCall(5, 6));
  Expect.equals('7, 8', D.fakeFunctionNSM(7, 8));
  Expect.equals('2 9 10', D.closure(9, 10));
  Expect.equals('3 11 12 13 null', D.closureOpt(11, 12, 13));
  Expect.equals('4 14 15 null 16', D.closureNamed(14, 15, w: 16));
  Expect.throws(() => D.closure('wrong arity'), (e) => e is NoSuchMethodError);
}

testClassReflective() {
  ClassMirror cm = reflectClass(D);

  Expect.equals('1 5 6',
                cm.invoke(#fakeFunctionCall, [5, 6]).reflectee);
  Expect.equals('7, 8',
                cm.invoke(#fakeFunctionNSM, [7, 8]).reflectee);
  Expect.equals('2 9 10',
                cm.invoke(#closure, [9, 10]).reflectee);
  Expect.equals('3 11 12 13 null',
                cm.invoke(#closureOpt, [11, 12, 13]).reflectee);
  Expect.equals('4 14 15 null 16',                                         /// named: continued
                cm.invoke(#closureNamed, [14, 15], {#w: 16}).reflectee);   /// named: continued
  Expect.throws(() => cm.invoke(#closure, ['wrong arity']),
                (e) => e is NoSuchMethodError);
}

get fakeFunctionCall => new FakeFunctionCall();
get fakeFunctionNSM => new FakeFunctionNSM();
get closure => (x, y) => '2 $x $y';
get closureOpt => (x, y, [z, w]) => '3 $x $y $z $w';
get closureNamed => (x, y, {z, w}) => '4 $x $y $z $w';
get notAClosure => 'Not a closure';

testLibraryBase() {
  Expect.equals('1 5 6', fakeFunctionCall(5, 6));
  Expect.equals('7, 8', fakeFunctionNSM(7, 8));
  Expect.equals('2 9 10', closure(9, 10));
  Expect.equals('3 11 12 13 null', closureOpt(11, 12, 13));
  Expect.equals('4 14 15 null 16', closureNamed(14, 15, w: 16));
  Expect.throws(() => closure('wrong arity'), (e) => e is NoSuchMethodError);
}

testLibraryReflective() {
  LibraryMirror lm = reflectClass(D).owner;

  Expect.equals('1 5 6',
                lm.invoke(#fakeFunctionCall, [5, 6]).reflectee);
  Expect.equals('7, 8',
                lm.invoke(#fakeFunctionNSM, [7, 8]).reflectee);
  Expect.equals('2 9 10',
                lm.invoke(#closure, [9, 10]).reflectee);
  Expect.equals('3 11 12 13 null',
                lm.invoke(#closureOpt, [11, 12, 13]).reflectee);
  Expect.equals('4 14 15 null 16',                                        /// named: continued
                lm.invoke(#closureNamed, [14, 15], {#w: 16}).reflectee);  /// named: continued
  Expect.throws(() => lm.invoke(#closure, ['wrong arity']),
                (e) => e is NoSuchMethodError);
}

main() {
  // Access the getters/closures at the base level in this variant.
  testInstanceBase();
  testInstanceReflective();
  testClassBase();
  testClassReflective();
  testLibraryBase();
  testLibraryReflective();
}