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Script to generate widget theme data defaults from the Material token database. (#95370)
This commit is contained in:
Darren Austin
GitHub
parent
a9c43bf752
commit
78f53bed51
@ -874,6 +874,7 @@ Future<void> _runFrameworkTests() async {
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'integration_tests', 'android_semantics_testing'), fatalWarnings: false);
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'manual_tests'));
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'tools', 'vitool'));
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'tools', 'gen_defaults'));
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'tools', 'gen_keycodes'));
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await _runFlutterTest(path.join(flutterRoot, 'dev', 'benchmarks', 'test_apps', 'stocks'));
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await _runFlutterTest(path.join(flutterRoot, 'packages', 'flutter_driver'), tests: <String>[path.join('test', 'src', 'real_tests')], options: soundNullSafetyOptions);
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27
dev/tools/gen_defaults/README.md
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27
dev/tools/gen_defaults/README.md
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@ -0,0 +1,27 @@
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## Token Defaults Generator
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Script that generates widget component theme data defaults
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based on the Material Token database. These tokens were
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extracted into a JSON file from an internal Google database.
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## Usage
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Run this program from the root of the git repository:
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```
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dart dev/tools/gen_defaults/bin/gen_defaults.dart
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```
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## Templates
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There is a template file for every component that needs defaults from
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the token database. These templates are implemented as subclasses of
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`TokenTemplate`. This base class provides some utilities and a structure
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for adding a new chunk of generated code to the bottom of a given file.
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Templates need to override the `generate` method to provide the generated
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code chunk as a string. The tokens are represented as a `Map<String, dynamic>`
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that is loaded from `data/material-tokens.json`. Templates can look up
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whatever properties are needed in this structure to provide the properties
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needed for the component.
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See `lib/fab_template.dart` for an example that generates defaults for the
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Floating Action Button.
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29
dev/tools/gen_defaults/bin/gen_defaults.dart
Normal file
29
dev/tools/gen_defaults/bin/gen_defaults.dart
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@ -0,0 +1,29 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Generate component theme data defaults based on the Material
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// Design Token database. These tokens were extracted into a
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// JSON file from the internal Google database.
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//
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// ## Usage
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//
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// Run this program from the root of the git repository.
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//
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// ```
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// dart dev/tools/gen_defaults/bin/gen_defaults.dart
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// ```
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import 'dart:convert';
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import 'dart:io';
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import 'package:gen_defaults/fab_template.dart';
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Future<void> main(List<String> args) async {
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const String tokensDB = 'dev/tools/gen_defaults/data/material-tokens.json';
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final Map<String, dynamic> tokens = jsonDecode(File(tokensDB).readAsStringSync()) as Map<String, dynamic>;
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const String materialLib = 'packages/flutter/lib/src/material';
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FABTemplate('$materialLib/floating_action_button.dart', tokens).updateFile();
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}
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1044
dev/tools/gen_defaults/data/material-tokens.json
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1044
dev/tools/gen_defaults/data/material-tokens.json
Normal file
File diff suppressed because it is too large
Load Diff
90
dev/tools/gen_defaults/lib/fab_template.dart
Normal file
90
dev/tools/gen_defaults/lib/fab_template.dart
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@ -0,0 +1,90 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'template.dart';
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class FABTemplate extends TokenTemplate {
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const FABTemplate(String fileName, Map<String, dynamic> tokens) : super(fileName, tokens);
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@override
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String generate() => '''
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// Generated version ${tokens["version"]}, ${tokens["date"]}
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class _M3Defaults extends FloatingActionButtonThemeData {
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_M3Defaults(this.context, this.type, this.hasChild)
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: _colors = Theme.of(context).colorScheme,
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_textTheme = Theme.of(context).textTheme;
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final BuildContext context;
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final _FloatingActionButtonType type;
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final bool hasChild;
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final ColorScheme _colors;
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final TextTheme _textTheme;
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bool get _isExtended => type == _FloatingActionButtonType.extended;
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@override Color? get foregroundColor => _colors.${color("md.comp.fab.primary.icon")};
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@override Color? get backgroundColor => _colors.${color("md.comp.fab.primary.container")};
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@override Color? get splashColor => _colors.${color("md.comp.fab.primary.pressed.state-layer")};
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@override double get elevation => ${elevation("md.comp.fab.primary.container")};
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@override Color? get focusColor => _colors.${color("md.comp.fab.primary.focus.state-layer")};
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@override double get focusElevation => ${elevation("md.comp.fab.primary.focus.container")};
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@override Color? get hoverColor => _colors.${color("md.comp.fab.primary.hover.state-layer")};
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@override double get hoverElevation => ${elevation("md.comp.fab.primary.hover.container")};
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@override double get highlightElevation => ${elevation("md.comp.fab.primary.pressed.container")};
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@override
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ShapeBorder? get shape {
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switch (type) {
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case _FloatingActionButtonType.regular:
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return ${shape("md.comp.fab.primary.container.shape")};
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case _FloatingActionButtonType.small:
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return ${shape("md.comp.fab.primary.small.container.shape")};
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case _FloatingActionButtonType.large:
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return ${shape("md.comp.fab.primary.large.container.shape")};
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case _FloatingActionButtonType.extended:
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return ${shape("md.comp.extended-fab.primary.container.shape")};
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}
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}
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@override bool? get enableFeedback => true;
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@override
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double? get iconSize {
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switch (type) {
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case _FloatingActionButtonType.regular: return ${value("md.comp.fab.primary.icon.size")};
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case _FloatingActionButtonType.small: return ${value("md.comp.fab.primary.small.icon.size")};
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case _FloatingActionButtonType.large: return ${value("md.comp.fab.primary.large.icon.size")};
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case _FloatingActionButtonType.extended: return ${value("md.comp.extended-fab.primary.icon.size")};
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}
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}
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@override
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BoxConstraints? get sizeConstraints => const BoxConstraints.tightFor(
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width: ${value("md.comp.fab.primary.container.width")},
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height: ${value("md.comp.fab.primary.container.height")},
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);
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@override
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BoxConstraints? get smallSizeConstraints => const BoxConstraints.tightFor(
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width: ${value("md.comp.fab.primary.small.container.width")},
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height: ${value("md.comp.fab.primary.small.container.height")},
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);
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@override
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BoxConstraints? get largeSizeConstraints => const BoxConstraints.tightFor(
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width: ${value("md.comp.fab.primary.large.container.width")},
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height: ${value("md.comp.fab.primary.large.container.height")},
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);
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@override
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BoxConstraints? get extendedSizeConstraints => const BoxConstraints.tightFor(
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height: ${value("md.comp.extended-fab.primary.container.height")},
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);
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@override double? get extendedIconLabelSpacing => 8.0;
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@override EdgeInsetsGeometry? get extendedPadding => EdgeInsetsDirectional.only(start: hasChild && _isExtended ? 16.0 : 20.0, end: 20.0);
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@override TextStyle? get extendedTextStyle => _textTheme.${textStyle("md.comp.extended-fab.primary.label-text")};
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}
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''';
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}
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91
dev/tools/gen_defaults/lib/template.dart
Normal file
91
dev/tools/gen_defaults/lib/template.dart
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@ -0,0 +1,91 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:io';
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abstract class TokenTemplate {
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const TokenTemplate(this.fileName, this.tokens);
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static const String beginGeneratedComment = '''
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// BEGIN GENERATED TOKEN PROPERTIES
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''';
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static const String headerComment = '''
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// Generated code to the end of this file. Do not edit by hand.
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// These defaults are generated from the Material Design Token
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// database by the script dev/tools/gen_defaults/bin/gen_defaults.dart.
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''';
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static const String endGeneratedComment = '''
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// END GENERATED TOKEN PROPERTIES
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''';
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final String fileName;
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final Map<String, dynamic> tokens;
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/// Replace or append the contents of the file with the text from [generate].
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///
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/// If the file already contains generated block at the end, it will
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/// be replaced by the [generate] output. Otherwise the content will
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/// just be appended to the end of the file.
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Future<void> updateFile() async {
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String contents = File(fileName).readAsStringSync();
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final int previousGeneratedIndex = contents.indexOf(beginGeneratedComment);
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if (previousGeneratedIndex != -1) {
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contents = contents.substring(0, previousGeneratedIndex);
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}
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final StringBuffer buffer = StringBuffer(contents);
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buffer.write(beginGeneratedComment);
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buffer.write(headerComment);
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buffer.write(generate());
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buffer.write(endGeneratedComment);
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File(fileName).writeAsStringSync(buffer.toString());
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}
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/// Provide the generated content for the template.
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///
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/// This abstract method needs to be implemented by subclasses
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/// to provide the content that [updateFile] will append to the
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/// bottom of the file.
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String generate();
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String color(String tokenName) {
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final String tokenColor = '$tokenName.color';
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final String tokenOpacity = '$tokenName.opacity';
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String value = '${tokens[tokenColor]!}';
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if (tokens.containsKey(tokenOpacity)) {
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final String opacity = tokens[tokens[tokenOpacity]!]!.toString();
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value += '.withOpacity($opacity)';
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}
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return value;
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}
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String elevation(String tokenName) {
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final String elevationName = '$tokenName.elevation';
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final Map<String, dynamic> elevationValue = tokens[tokens[elevationName]!]! as Map<String, dynamic>;
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return elevationValue['value']!.toString();
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}
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String shape(String tokenName) {
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// TODO(darrenaustin): handle more than just rounded rectangle shapes
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final String shapeToken = tokens[tokenName]! as String;
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final Map<String, dynamic> shape = tokens[shapeToken]! as Map<String, dynamic>;
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final Map<String, dynamic> shapeValue = shape['value']! as Map<String, dynamic>;
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return 'const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(${shapeValue['value']!})))';
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}
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String value(String tokenName) {
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final Map<String, dynamic> value = tokens[tokenName]! as Map<String, dynamic>;
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return value['value'].toString();
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}
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String textStyle(String tokenName) {
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final String fontName = '$tokenName.font';
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return tokens[fontName]!.toString();
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}
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}
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58
dev/tools/gen_defaults/pubspec.yaml
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58
dev/tools/gen_defaults/pubspec.yaml
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@ -0,0 +1,58 @@
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name: gen_defaults
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description: A command line script to generate Material component defaults from the token database.
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version: 1.0.0
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environment:
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sdk: ">=2.12.0-0 <3.0.0"
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dependencies:
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async: 2.8.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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charcode: 1.3.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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collection: 1.15.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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http_parser: 4.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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source_span: 1.8.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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string_scanner: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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term_glyph: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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typed_data: 1.3.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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dev_dependencies:
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path: 1.8.0
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test: 1.19.5
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_fe_analyzer_shared: 31.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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analyzer: 2.8.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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boolean_selector: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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cli_util: 0.3.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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convert: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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coverage: 1.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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crypto: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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file: 6.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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frontend_server_client: 2.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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glob: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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http_multi_server: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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io: 1.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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js: 0.6.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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logging: 1.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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matcher: 0.12.11 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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mime: 1.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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node_preamble: 2.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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package_config: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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pool: 1.5.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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pub_semver: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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shelf: 1.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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shelf_packages_handler: 3.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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shelf_static: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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shelf_web_socket: 1.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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source_map_stack_trace: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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source_maps: 0.10.10 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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stack_trace: 1.10.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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stream_channel: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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test_core: 0.4.9 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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vm_service: 7.5.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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watcher: 1.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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web_socket_channel: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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webkit_inspection_protocol: 1.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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yaml: 3.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
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# PUBSPEC CHECKSUM: aa20
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110
dev/tools/gen_defaults/test/gen_defaults_test.dart
Normal file
110
dev/tools/gen_defaults/test/gen_defaults_test.dart
Normal file
@ -0,0 +1,110 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:io';
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import 'package:gen_defaults/template.dart';
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import 'package:path/path.dart' as path;
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import 'package:test/test.dart';
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void main() {
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test('Templates will append to the end of a file', () {
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final Directory tempDir = Directory.systemTemp.createTempSync('gen_defaults');
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try {
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// Create a temporary file with some content.
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final File tempFile = File(path.join(tempDir.path, 'test_template.txt'));
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tempFile.createSync();
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tempFile.writeAsStringSync('''
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// This is a file with stuff in it.
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// This part shouldn't be changed by
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// the template.
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''');
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// Have a test template append new parameterized content to the end of
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// the file.
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final Map<String, dynamic> tokens = <String, dynamic>{'foo': 'Foobar', 'bar': 'Barfoo'};
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TestTemplate(tempFile.path, tokens).updateFile();
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expect(tempFile.readAsStringSync(), '''
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// This is a file with stuff in it.
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// This part shouldn't be changed by
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// the template.
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// BEGIN GENERATED TOKEN PROPERTIES
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// Generated code to the end of this file. Do not edit by hand.
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// These defaults are generated from the Material Design Token
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// database by the script dev/tools/gen_defaults/bin/gen_defaults.dart.
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static final String tokenFoo = 'Foobar';
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static final String tokenBar = 'Barfoo';
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// END GENERATED TOKEN PROPERTIES
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''');
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} finally {
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tempDir.deleteSync(recursive: true);
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}
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});
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test('Templates will update over previously generated code at the end of a file', () {
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final Directory tempDir = Directory.systemTemp.createTempSync('gen_defaults');
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try {
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// Create a temporary file with some content.
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final File tempFile = File(path.join(tempDir.path, 'test_template.txt'));
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tempFile.createSync();
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tempFile.writeAsStringSync('''
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// This is a file with stuff in it.
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// This part shouldn't be changed by
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// the template.
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// BEGIN GENERATED TOKEN PROPERTIES
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// Generated code to the end of this file. Do not edit by hand.
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// These defaults are generated from the Material Design Token
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// database by the script dev/tools/gen_defaults/bin/gen_defaults.dart.
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|
||||
static final String tokenFoo = 'Foobar';
|
||||
static final String tokenBar = 'Barfoo';
|
||||
|
||||
// END GENERATED TOKEN PROPERTIES
|
||||
''');
|
||||
|
||||
// Have a test template append new parameterized content to the end of
|
||||
// the file.
|
||||
final Map<String, dynamic> tokens = <String, dynamic>{'foo': 'foo', 'bar': 'bar'};
|
||||
TestTemplate(tempFile.path, tokens).updateFile();
|
||||
|
||||
expect(tempFile.readAsStringSync(), '''
|
||||
// This is a file with stuff in it.
|
||||
// This part shouldn't be changed by
|
||||
// the template.
|
||||
|
||||
// BEGIN GENERATED TOKEN PROPERTIES
|
||||
|
||||
// Generated code to the end of this file. Do not edit by hand.
|
||||
// These defaults are generated from the Material Design Token
|
||||
// database by the script dev/tools/gen_defaults/bin/gen_defaults.dart.
|
||||
|
||||
static final String tokenFoo = 'foo';
|
||||
static final String tokenBar = 'bar';
|
||||
|
||||
// END GENERATED TOKEN PROPERTIES
|
||||
''');
|
||||
|
||||
} finally {
|
||||
tempDir.deleteSync(recursive: true);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
class TestTemplate extends TokenTemplate {
|
||||
TestTemplate(String fileName, Map<String, dynamic> tokens) : super(fileName, tokens);
|
||||
|
||||
@override
|
||||
String generate() => '''
|
||||
static final String tokenFoo = '${tokens['foo']}';
|
||||
static final String tokenBar = '${tokens['bar']}';
|
||||
''';
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user