├── .gitignore
├── README.md
├── pubspec.yaml
├── example
    ├── legacy
    │   ├── websocket.css
    │   ├── sunflower.css
    │   ├── websocket.html_snippet
    │   ├── hello_world.dart
    │   ├── sunflower.html_snippet
    │   ├── fibonacci.dart
    │   ├── websocket.dart
    │   └── sunflower.dart
    └── dart_2_1
    │   ├── int_to_double.dart
    │   └── new_mixin_syntax.dart
├── .travis.yml
├── test
    ├── legacy
    │   ├── hello_world_test.dart
    │   └── fibonacci_test.dart
    └── dart_2_1
    │   ├── int_to_double_test.dart
    │   └── new_mixin_syntax_test.dart
├── LICENSE
├── CONTRIBUTING.md
├── analysis_options.yaml
└── tool
    └── builder.dart


/.gitignore:
--------------------------------------------------------------------------------
1 | # Files and directories created by pub
2 | .dart_tool/
3 | .packages
4 | pubspec.lock
5 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | [![Build Status](https://travis-ci.org/dart-lang/dartpad_examples.svg?branch=master)](https://travis-ci.org/dart-lang/dartpad_examples)
2 | 
3 | Nothing to see here...yet...
4 | 


--------------------------------------------------------------------------------
/pubspec.yaml:
--------------------------------------------------------------------------------
 1 | name: dartpad_examples
 2 | 
 3 | environment:
 4 |   sdk: '>=2.1.0 <3.0.0'
 5 | 
 6 | dev_dependencies:
 7 |   build: ^1.0.0
 8 |   build_runner: ^1.0.0
 9 |   build_web_compilers: '>=1.0.0 <3.0.0'
10 |   path: ^1.0.0
11 |   pedantic: ^1.0.0
12 |   test: ^1.2.0
13 | 


--------------------------------------------------------------------------------
/example/legacy/websocket.css:
--------------------------------------------------------------------------------
1 | /* Copyright 2015 the Dart project authors. All rights reserved. */
2 | /* Use of this source code is governed by a BSD-style license */
3 | /* that can be found in the LICENSE file. */
4 | 
5 | input {
6 |   width: 250px;
7 |   margin-left: 2em;
8 | }
9 | 


--------------------------------------------------------------------------------
/example/legacy/sunflower.css:
--------------------------------------------------------------------------------
 1 | /* Copyright 2011 the Dart project authors. All rights reserved. */
 2 | /* Use of this source code is governed by a BSD-style license */
 3 | /* that can be found in the LICENSE file. */
 4 | 
 5 | h2 {
 6 |   margin-bottom: 0;
 7 |   text-align: center;
 8 | }
 9 | 
10 | div {
11 |   text-align: center;
12 | }
13 | 


--------------------------------------------------------------------------------
/example/legacy/websocket.html_snippet:
--------------------------------------------------------------------------------
 1 | <!-- Copyright 2015 the Dart project authors. All rights reserved.
 2 |      Use of this source code is governed by a BSD-style license
 3 |      that can be found in the LICENSE file. -->
 4 | 
 5 | <h2>A WebSocket test using echo.websocket.org</h2>
 6 | 
 7 | <br>
 8 | 
 9 | <p>Enter text to echo:</p>
10 | 
11 | <input type="text">
12 | 


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
 1 | language: dart
 2 | 
 3 | dart:
 4 |   - 2.1.0
 5 |   - dev
 6 | 
 7 | dart_task:
 8 |   - test: -p vm,chrome
 9 |   - dartfmt
10 |   - dartanalyzer: --fatal-infos --fatal-warnings .
11 | 
12 | # Only building master means that we don't run two builds for each pull request.
13 | branches:
14 |   only: [master]
15 | 
16 | cache:
17 |   directories:
18 |     - $HOME/.pub-cache
19 | 


--------------------------------------------------------------------------------
/example/legacy/hello_world.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2015 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | //# Captured on 2018-10-09
 6 | //# https://dartpad.dartlang.org/33706e19df021e52d98c
 7 | 
 8 | void main() {
 9 |   for (var i = 0; i < 4; i++) {
10 |     print('hello $i');
11 |   }
12 | }
13 | 


--------------------------------------------------------------------------------
/test/legacy/hello_world_test.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2018 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | import 'package:test/test.dart';
 6 | 
 7 | import '../../example/legacy/hello_world.dart' as example;
 8 | 
 9 | void main() {
10 |   test('output', () {
11 |     expect(example.main, prints(r'''
12 | hello 0
13 | hello 1
14 | hello 2
15 | hello 3
16 | '''));
17 |   });
18 | }
19 | 


--------------------------------------------------------------------------------
/example/legacy/sunflower.html_snippet:
--------------------------------------------------------------------------------
 1 | <!-- Copyright 2011 the Dart project authors. All rights reserved.
 2 |      Use of this source code is governed by a BSD-style license
 3 |      that can be found in the LICENSE file. -->
 4 | 
 5 | <h2>Dr. Fibonacci's Sunflower Spectacular</h2>
 6 | 
 7 | <div>
 8 |   <canvas id="canvas" width="300" height="300"></canvas>
 9 | </div>
10 | 
11 | <div>
12 |   <label>0</label>
13 |   <input id="slider" type="range" max="1000" value="500" />
14 |   <label>1000</label>
15 | </div>
16 | 


--------------------------------------------------------------------------------
/example/legacy/fibonacci.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2015 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | //# Captured on 2018-10-09
 6 | //# https://dartpad.dartlang.org/74e990d984faad26dea0
 7 | 
 8 | void main() {
 9 |   var i = 20;
10 |   print('fibonacci($i) = ${fibonacci(i)}');
11 | }
12 | 
13 | /// Computes the nth Fibonacci number.
14 | int fibonacci(int n) {
15 |   return n < 2 ? n : (fibonacci(n - 1) + fibonacci(n - 2));
16 | }
17 | 


--------------------------------------------------------------------------------
/test/legacy/fibonacci_test.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2018 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | import 'package:test/test.dart';
 6 | 
 7 | import '../../example/legacy/fibonacci.dart' as example;
 8 | 
 9 | void main() {
10 |   test('output', () {
11 |     expect(example.main, prints(r'''
12 | fibonacci(20) = 6765
13 | '''));
14 |   });
15 | 
16 |   test('function', () {
17 |     expect(example.fibonacci(10), 55);
18 |   });
19 | }
20 | 


--------------------------------------------------------------------------------
/test/dart_2_1/int_to_double_test.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2018 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | import 'dart:math' as math;
 6 | 
 7 | import 'package:test/test.dart';
 8 | 
 9 | import '../../example/dart_2_1/int_to_double.dart' as example;
10 | 
11 | void main() {
12 |   test('output', () {
13 |     expect(example.main, prints(r'''
14 | 12.566370614359172
15 | 12.566370614359172
16 | '''));
17 |   });
18 | 
19 |   test('api', () {
20 |     var size = example.Circle(1);
21 |     expect(size.radius, const TypeMatcher<double>());
22 |     expect(size.area, math.pi);
23 |   });
24 | }
25 | 


--------------------------------------------------------------------------------
/example/dart_2_1/int_to_double.dart:
--------------------------------------------------------------------------------
 1 | // Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
 2 | // for details. All rights reserved. Use of this source code is governed by a
 3 | // BSD-style license that can be found in the LICENSE file.
 4 | 
 5 | import 'dart:math' as math;
 6 | 
 7 | class Circle {
 8 |   double radius;
 9 | 
10 |   Circle(this.radius);
11 | 
12 |   double get area => math.pi * math.pow(radius, 2);
13 | }
14 | 
15 | void main() {
16 |   // Before Dart 2.1, you had to provide a trailing `.0` – `42.0` – when
17 |   // assigning to fields or parameters of type `double`.
18 |   // A value like `42` was not allowed.
19 | 
20 |   print(Circle(2.0).area); // Before Dart 2.1, the trailing `.0` is required.
21 | 
22 |   // With Dart 2.1, you can provide whole-number values when assigning to
23 |   // a double without the trailing `.0`.
24 |   print(Circle(2).area); // Legal with Dart 2.1
25 | }
26 | 


--------------------------------------------------------------------------------
/example/legacy/websocket.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2012 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | //# Captured on 2018-10-17
 6 | //# https://dartpad.dartlang.org/479ecba5a56fd706b648
 7 | 
 8 | import 'dart:html';
 9 | 
10 | void main() {
11 |   var wsTest = WebSocketTest('wss://echo.websocket.org');
12 | 
13 |   InputElement input = querySelector('input');
14 |   input.onChange.listen((_) {
15 |     wsTest.send(input.value);
16 |     input.value = '';
17 |   });
18 | }
19 | 
20 | class WebSocketTest {
21 |   final WebSocket _socket;
22 |   final _timer = Stopwatch()..start();
23 | 
24 |   WebSocketTest(String url) : _socket = WebSocket(url) {
25 |     print('Connecting to $url...');
26 |     _startListening();
27 |   }
28 | 
29 |   void send(String value) {
30 |     print('==> $value');
31 |     _socket.send(value);
32 |     _timer.reset();
33 |   }
34 | 
35 |   void _startListening() {
36 |     _socket.onOpen.listen((e) {
37 |       print('Connected!');
38 |       send('Hello from Dart!');
39 |     });
40 | 
41 |     _socket.onClose.listen((_) => print('Websocket closed.'));
42 |     _socket.onError.listen((_) => print('Error opening connection.'));
43 | 
44 |     _socket.onMessage.listen((e) {
45 |       print('<== ${e.data} [${_timer.elapsedMilliseconds}ms]');
46 |     });
47 |   }
48 | }
49 | 


--------------------------------------------------------------------------------
/test/dart_2_1/new_mixin_syntax_test.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2018 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | import 'package:test/test.dart';
 6 | 
 7 | import '../../example/dart_2_1/new_mixin_syntax.dart' as example;
 8 | 
 9 | void main() {
10 |   test('output', () {
11 |     expect(example.main, prints(r'''
12 | *
13 | * Simple usage of `mixin`
14 | *
15 | 
16 | [ Answer ]
17 | - Use `with` to include a mixin
18 | answer: 42
19 | 
20 | *
21 | * More advanced usage of `mixin`
22 | *
23 | 
24 | [ LogAnswer ]
25 | - Include many mixins by separating with commas. `LoggingAnswerMixin` prints every time `answer` is accessed.
26 |   LOG: `answer` property was accessed
27 | answer: 42
28 | 
29 | *
30 | * The order in which mixins are included matters.
31 | *
32 | 
33 | [ LogVerifyAnswer ]
34 | - In this case, log then verify.
35 |   LOG: `answer` property was accessed
36 |   VERIFY: Invalid Result!
37 | answer: 42
38 | 
39 | [ VerifyLogAnswer ]
40 | - In this case, verify then log.
41 |   VERIFY: Invalid Result!
42 |   LOG: `answer` property was accessed
43 | answer: 42
44 | 
45 | *
46 | * You can extend classes that include mixins, too.
47 | *
48 | 
49 | [ DeltaLogVerifyAnswer ]
50 | - Verify will fail.
51 |   LOG: `answer` property was accessed
52 |   VERIFY: Invalid Result!
53 | answer: 42
54 | 
55 | [ DeltaLogVerifyAnswer ]
56 | - Verify will succeed.
57 |   LOG: `answer` property was accessed
58 |   VERIFY: valid result
59 | answer: 43
60 | 
61 | '''));
62 |   });
63 | }
64 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | Copyright 2018, the Dart project authors. All rights reserved.
 2 | Redistribution and use in source and binary forms, with or without
 3 | modification, are permitted provided that the following conditions are
 4 | met:
 5 | 
 6 |     * Redistributions of source code must retain the above copyright
 7 |       notice, this list of conditions and the following disclaimer.
 8 |     * Redistributions in binary form must reproduce the above
 9 |       copyright notice, this list of conditions and the following
10 |       disclaimer in the documentation and/or other materials provided
11 |       with the distribution.
12 |     * Neither the name of Google Inc. nor the names of its
13 |       contributors may be used to endorse or promote products derived
14 |       from this software without specific prior written permission.
15 | 
16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 | 


--------------------------------------------------------------------------------
/CONTRIBUTING.md:
--------------------------------------------------------------------------------
 1 | Want to contribute? Great! First, read this page (including the small print at
 2 | the end).
 3 | 
 4 | ### Before you contribute
 5 | Before we can use your code, you must sign the
 6 | [Google Individual Contributor License Agreement](https://cla.developers.google.com/about/google-individual)
 7 | (CLA), which you can do online. The CLA is necessary mainly because you own the
 8 | copyright to your changes, even after your contribution becomes part of our
 9 | codebase, so we need your permission to use and distribute your code. We also
10 | need to be sure of various other things—for instance that you'll tell us if you
11 | know that your code infringes on other people's patents. You don't have to sign
12 | the CLA until after you've submitted your code for review and a member has
13 | approved it, but you must do it before we can put your code into our codebase.
14 | 
15 | Before you start working on a larger contribution, you should get in touch with
16 | us first through the issue tracker with your idea so that we can help out and
17 | possibly guide you. Coordinating up front makes it much easier to avoid
18 | frustration later on.
19 | 
20 | ### Code reviews
21 | All submissions, including submissions by project members, require review.
22 | 
23 | ### File headers
24 | All files in the project must start with the following header.
25 | 
26 |     // Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
27 |     // for details. All rights reserved. Use of this source code is governed by a
28 |     // BSD-style license that can be found in the LICENSE file.
29 | 
30 | ### The small print
31 | Contributions made by corporations are covered by a different agreement than the
32 | one above, the
33 | [Software Grant and Corporate Contributor License Agreement](https://developers.google.com/open-source/cla/corporate).
34 | 


--------------------------------------------------------------------------------
/example/legacy/sunflower.dart:
--------------------------------------------------------------------------------
 1 | // Copyright 2011 the Dart project authors. All rights reserved.
 2 | // Use of this source code is governed by a BSD-style license
 3 | // that can be found in the LICENSE file.
 4 | 
 5 | //# Captured on 2018-10-17
 6 | //# https://dartpad.dartlang.org/49bde0c1ed780decc902f3d4d06d8f0c
 7 | 
 8 | import 'dart:html';
 9 | import 'dart:math' as math;
10 | 
11 | void main() {
12 |   Sunflower();
13 | }
14 | 
15 | class Sunflower {
16 |   static const orange = 'orange';
17 |   static const seedRadius = 2;
18 |   static const scaleFactor = 4;
19 |   static const tau = math.pi * 2;
20 |   static const maxD = 300;
21 | 
22 |   static final phi = (math.sqrt(5) + 1) / 2;
23 |   static final center = maxD / 2;
24 | 
25 |   final context = (querySelector('#canvas') as CanvasElement).context2D;
26 | 
27 |   int seeds;
28 | 
29 |   Sunflower() {
30 |     InputElement slider = querySelector('#slider');
31 | 
32 |     void update() {
33 |       seeds = int.parse(slider.value);
34 |       drawFrame();
35 |     }
36 | 
37 |     slider.onChange.listen((_) => update());
38 | 
39 |     update();
40 |   }
41 | 
42 |   // Draw the complete figure for the current number of seeds.
43 |   void drawFrame() {
44 |     print('seed value = $seeds');
45 | 
46 |     context.clearRect(0, 0, maxD, maxD);
47 | 
48 |     for (var i = 0; i < seeds; i++) {
49 |       var theta = i * tau / phi;
50 |       var r = math.sqrt(i) * scaleFactor;
51 |       var x = center + r * math.cos(theta);
52 |       var y = center - r * math.sin(theta);
53 |       drawSeed(x, y);
54 |     }
55 |   }
56 | 
57 |   // Draw a small circle representing a seed centered at (x,y).
58 |   void drawSeed(num x, num y) {
59 |     context
60 |       ..beginPath()
61 |       ..lineWidth = 2
62 |       ..fillStyle = orange
63 |       ..strokeStyle = orange
64 |       ..arc(x, y, seedRadius, 0, tau, false)
65 |       ..fill()
66 |       ..closePath()
67 |       ..stroke();
68 |   }
69 | }
70 | 


--------------------------------------------------------------------------------
/analysis_options.yaml:
--------------------------------------------------------------------------------
 1 | include: package:pedantic/analysis_options.yaml
 2 | linter:
 3 |   rules:
 4 |   - annotate_overrides
 5 |   - avoid_empty_else
 6 |   - avoid_function_literals_in_foreach_calls
 7 |   - avoid_init_to_null
 8 |   - avoid_null_checks_in_equality_operators
 9 |   - avoid_relative_lib_imports
10 |   - avoid_return_types_on_setters
11 |   - avoid_returning_null
12 |   - avoid_types_as_parameter_names
13 |   - avoid_unused_constructor_parameters
14 |   - await_only_futures
15 |   - camel_case_types
16 |   - cancel_subscriptions
17 |   - cascade_invocations
18 |   - comment_references
19 |   - constant_identifier_names
20 |   - control_flow_in_finally
21 |   - directives_ordering
22 |   - empty_catches
23 |   - empty_constructor_bodies
24 |   - empty_statements
25 |   - hash_and_equals
26 |   - implementation_imports
27 |   - invariant_booleans
28 |   - iterable_contains_unrelated_type
29 |   - library_names
30 |   - library_prefixes
31 |   - list_remove_unrelated_type
32 |   - no_adjacent_strings_in_list
33 |   - no_duplicate_case_values
34 |   - non_constant_identifier_names
35 |   - omit_local_variable_types
36 |   - only_throw_errors
37 |   - overridden_fields
38 |   - package_api_docs
39 |   - package_names
40 |   - package_prefixed_library_names
41 |   - prefer_adjacent_string_concatenation
42 |   - prefer_collection_literals
43 |   - prefer_conditional_assignment
44 |   - prefer_const_constructors
45 |   - prefer_contains
46 |   - prefer_equal_for_default_values
47 |   - prefer_final_fields
48 |   - prefer_initializing_formals
49 |   - prefer_interpolation_to_compose_strings
50 |   - prefer_is_empty
51 |   - prefer_is_not_empty
52 |   - prefer_single_quotes
53 |   - prefer_typing_uninitialized_variables
54 |   - recursive_getters
55 |   - slash_for_doc_comments
56 |   - test_types_in_equals
57 |   - throw_in_finally
58 |   - type_init_formals
59 |   - unawaited_futures
60 |   - unnecessary_brace_in_string_interps
61 |   - unnecessary_const
62 |   - unnecessary_getters_setters
63 |   - unnecessary_lambdas
64 |   - unnecessary_new
65 |   - unnecessary_null_aware_assignments
66 |   - unnecessary_statements
67 |   - unnecessary_this
68 |   - unrelated_type_equality_checks
69 |   - use_rethrow_when_possible
70 |   - valid_regexps
71 | 


--------------------------------------------------------------------------------
/example/dart_2_1/new_mixin_syntax.dart:
--------------------------------------------------------------------------------
  1 | // Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
  2 | // for details. All rights reserved. Use of this source code is governed by a
  3 | // BSD-style license that can be found in the LICENSE file.
  4 | 
  5 | mixin AnswerMixin {
  6 |   int get answer => 42;
  7 | 
  8 |   @override
  9 |   String toString() => '[ $runtimeType ]';
 10 | }
 11 | 
 12 | class Answer with AnswerMixin {}
 13 | 
 14 | void main() {
 15 |   print('''
 16 | *
 17 | * Simple usage of `mixin`
 18 | *
 19 | ''');
 20 |   printAnswer(Answer(), 'Use `with` to include a mixin');
 21 | 
 22 |   print('''
 23 | *
 24 | * More advanced usage of `mixin`
 25 | *
 26 | ''');
 27 |   printAnswer(
 28 |       LogAnswer(),
 29 |       'Include many mixins by separating with commas. '
 30 |       '`$LoggingAnswerMixin` prints every time `answer` is accessed.');
 31 | 
 32 |   print('''
 33 | *
 34 | * The order in which mixins are included matters.
 35 | *
 36 | ''');
 37 | 
 38 |   printAnswer(LogVerifyAnswer(), 'In this case, log then verify.');
 39 |   printAnswer(VerifyLogAnswer(), 'In this case, verify then log.');
 40 | 
 41 |   print('''
 42 | *
 43 | * You can extend classes that include mixins, too.
 44 | *
 45 | ''');
 46 | 
 47 |   printAnswer(DeltaLogVerifyAnswer(), 'Verify will fail.');
 48 |   printAnswer(DeltaLogVerifyAnswer(1), 'Verify will succeed.');
 49 | }
 50 | 
 51 | void printAnswer(AnswerMixin obj, String description) {
 52 |   print(obj);
 53 |   print('- $description');
 54 |   print('answer: ${obj.answer}');
 55 |   print('');
 56 | }
 57 | 
 58 | /// [LoggingAnswerMixin] can only be used as a mixin when the superclass
 59 | /// (or one of the mixins that comes before it in a "with" clause) implements
 60 | /// [AnswerMixin].
 61 | mixin LoggingAnswerMixin on AnswerMixin {
 62 |   @override
 63 |   int get answer {
 64 |     var value = super.answer;
 65 |     print('  LOG: `answer` property was accessed');
 66 |     return value;
 67 |   }
 68 | }
 69 | 
 70 | class LogAnswer with AnswerMixin, LoggingAnswerMixin {}
 71 | 
 72 | mixin VerifyingAnswerMixin on AnswerMixin {
 73 |   @override
 74 |   int get answer {
 75 |     var value = super.answer;
 76 |     if (value == 42) {
 77 |       print('  VERIFY: Invalid Result!');
 78 |     } else {
 79 |       print('  VERIFY: valid result');
 80 |     }
 81 |     return value;
 82 |   }
 83 | }
 84 | 
 85 | class LogVerifyAnswer
 86 |     with AnswerMixin, LoggingAnswerMixin, VerifyingAnswerMixin {}
 87 | 
 88 | class VerifyLogAnswer
 89 |     with AnswerMixin, VerifyingAnswerMixin, LoggingAnswerMixin {}
 90 | 
 91 | abstract class DeltaAnswer with AnswerMixin {
 92 |   final int delta;
 93 | 
 94 |   DeltaAnswer(this.delta);
 95 | 
 96 |   @override
 97 |   int get answer => super.answer + delta;
 98 | }
 99 | 
100 | class DeltaLogVerifyAnswer extends DeltaAnswer
101 |     with LoggingAnswerMixin, VerifyingAnswerMixin {
102 |   DeltaLogVerifyAnswer([int delta = 0]) : super(delta);
103 | }
104 | 


--------------------------------------------------------------------------------
/tool/builder.dart:
--------------------------------------------------------------------------------
 1 | // Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
 2 | // for details. All rights reserved. Use of this source code is governed by a
 3 | // BSD-style license that can be found in the LICENSE file.
 4 | 
 5 | import 'dart:async';
 6 | import 'dart:convert' show HtmlEscape, HtmlEscapeMode;
 7 | 
 8 | import 'package:build/build.dart';
 9 | import 'package:glob/glob.dart';
10 | import 'package:path/path.dart' as p;
11 | 
12 | Builder exampleWebBuilder(BuilderOptions options) => _ExampleWebBuilder();
13 | 
14 | Builder exampleRootBuilder(BuilderOptions options) => _WebRootBuilder();
15 | 
16 | class _ExampleWebBuilder implements Builder {
17 |   @override
18 |   Future<void> build(BuildStep buildStep) async {
19 |     var source = await buildStep.readAsString(buildStep.inputId);
20 | 
21 |     var htmlAsset = buildStep.inputId.changeExtension('.html_snippet');
22 |     String snippetContent;
23 |     if (await buildStep.canRead(htmlAsset)) {
24 |       snippetContent = await buildStep.readAsString(htmlAsset);
25 |     }
26 | 
27 |     await buildStep.writeAsString(
28 |         buildStep.inputId.changeExtension('.html'),
29 |         _template(
30 |             p.basenameWithoutExtension(buildStep.inputId.path),
31 |             await buildStep.canRead(buildStep.inputId.changeExtension('.css')),
32 |             const HtmlEscape(HtmlEscapeMode.element).convert(source),
33 |             snippetContent ?? 'Open console...'));
34 |   }
35 | 
36 |   @override
37 |   final buildExtensions = const {
38 |     '.dart': ['.html']
39 |   };
40 | 
41 |   String _template(
42 |           String name, bool hasCss, String source, String snippetContent) =>
43 |       '''
44 | <!DOCTYPE html>
45 | <html>
46 | <head>
47 |   <meta charset="utf-8">
48 |   <meta http-equiv="X-UA-Compatible" content="IE=edge">
49 |   <title>${name.replaceAll('_', ' ')}</title>
50 |   ${hasCss ? '<link rel="stylesheet" href="$name.css">' : ''}
51 |   <script defer src="$name.dart.js"></script>
52 | </head>
53 | <body>
54 | $snippetContent
55 | 
56 | <h3>Source</h3>
57 | <pre style='background: lightgray; display: inline-block; padding: 15px;'>
58 | $source
59 | </pre>
60 | </body>
61 | </html>
62 | ''';
63 | }
64 | 
65 | class _WebRootBuilder implements Builder {
66 |   @override
67 |   Future<void> build(BuildStep buildStep) async {
68 |     var examples = await buildStep
69 |         .findAssets(Glob('example/**/*.dart'))
70 |         .map((asset) =>
71 |             p.joinAll(asset.changeExtension('.html').pathSegments.skip(1)))
72 |         .toList();
73 | 
74 |     var exampleLinks = examples.map((p) {
75 |       return '<p><a href="$p">$p</a></p>';
76 |     }).join('\n');
77 | 
78 |     await buildStep.writeAsString(
79 |         AssetId(buildStep.inputId.package, 'example/index.html'), '''
80 | <!DOCTYPE html>
81 | <html>
82 | <head>
83 |   <meta charset="utf-8">
84 |   <meta http-equiv="X-UA-Compatible" content="IE=edge">
85 | </head>
86 | <body>
87 | $exampleLinks
88 | </body>
89 | </html>
90 | ''');
91 |   }
92 | 
93 |   @override
94 |   final buildExtensions = const {
95 |     r'test/$test$': ['example/index.html']
96 |   };
97 | }
98 | 


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