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dcharkesdcharkes
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[native_assets_cli] Split up syntax generator (#2106)
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11 files changed

+754
-877
lines changed

11 files changed

+754
-877
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‎pkgs/json_syntax_generator/lib/src/generator/code_generation_helpers.dart

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// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// Wraps the [input] in curly braces if it's not empty.
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String wrapBracesIfNotEmpty(String input) => input.isEmpty ? input : '{$input}';
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/// Wraps the [input] in curly braces or adds a semicolon if it's empty.
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String wrapInBracesOrSemicolon(String input) =>
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input.isEmpty ? ';' : '{ $input }';

‎pkgs/json_syntax_generator/lib/src/generator/enum_class_generator.dart

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// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import '../model/class_info.dart';
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class EnumGenerator {
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final EnumClassInfo classInfo;
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EnumGenerator(this.classInfo);
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String generate() {
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final buffer = StringBuffer();
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final className = classInfo.name;
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final enumValues = classInfo.enumValues;
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final staticFinals = <String>[];
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for (final value in enumValues) {
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final valueName = value.name;
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final jsonValue = value.jsonValue;
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staticFinals.add(
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'static const $valueName = $className._(\'$jsonValue\');',
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);
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}
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buffer.writeln('''
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class $className {
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final String name;
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const $className._(this.name);
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${staticFinals.join('\n\n')}
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static const List<$className> values = [
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${enumValues.map((e) => e.name).join(',')}
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];
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static final Map<String, $className> _byName = {
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for (final value in values) value.name: value,
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};
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$className.unknown(this.name) : assert(!_byName.keys.contains(name));
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factory $className.fromJson(String name) {
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final knownValue = _byName[name];
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if(knownValue != null) {
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return knownValue;
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}
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return $className.unknown(name);
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}
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bool get isKnown => _byName[name] != null;
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@override
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String toString() => name;
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}
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''');
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return buffer.toString();
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}
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}

‎pkgs/json_syntax_generator/lib/src/generator/helper_library.dart

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@@ -41,6 +41,15 @@ extension on Map<String, Object?> {
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return list.cast();
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}
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List<T>? optionalListParsed<T extends Object?>(
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String key,
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T Function(Object?) elementParser,
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) {
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final jsonValue = optionalList(key);
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if (jsonValue == null) return null;
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return [for (final element in jsonValue) elementParser(element)];
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}
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Map<String, T> map$<T extends Object?>(String key) =>
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_castMap<T>(get<Map<String, Object?>>(key), key);
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@@ -92,6 +101,14 @@ extension on Map<String, Object?> {
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}
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return Uri.file(path);
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}
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void setOrRemove(String key, Object? value) {
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if (value == null) {
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remove(key);
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} else {
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this[key] = value;
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}
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}
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}
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extension on List<Uri> {

‎pkgs/json_syntax_generator/lib/src/generator/normal_class_generator.dart

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// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import '../model/class_info.dart';
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import 'code_generation_helpers.dart';
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import 'property_generator.dart';
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class ClassGenerator {
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final NormalClassInfo classInfo;
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ClassGenerator(this.classInfo);
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String generate() {
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final buffer = StringBuffer();
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final className = classInfo.name;
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final superclass = classInfo.superclass;
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final superclassName = superclass?.name;
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final properties = classInfo.properties;
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final identifyingSubtype = classInfo.taggedUnionKey;
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final constructorParams = <String>[];
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final setupParams = <String>[];
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final constructorSetterCalls = <String>[];
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final accessors = <String>[];
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final superParams = <String>[];
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final propertyNames =
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{
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for (final property in properties) property.name,
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if (superclass != null)
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for (final property in superclass.properties) property.name,
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}.toList()
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..sort();
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for (final propertyName in propertyNames) {
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final superClassProperty = superclass?.getProperty(propertyName);
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final thisClassProperty = classInfo.getProperty(propertyName);
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final property = superClassProperty ?? thisClassProperty!;
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if (superClassProperty != null) {
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if (identifyingSubtype == null) {
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constructorParams.add(
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'${property.isRequired ? 'required ' : ''}super.${property.name}',
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);
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} else {
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superParams.add("type: '$identifyingSubtype'");
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}
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} else {
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final dartType = property.type;
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constructorParams.add(
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'${property.isRequired ? 'required ' : ''}$dartType ${property.name}',
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);
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setupParams.add(
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'${property.isRequired ? 'required' : ''} $dartType ${property.name}',
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);
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if (property.setterPrivate) {
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constructorSetterCalls.add('_${property.name} = ${property.name};');
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} else {
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constructorSetterCalls.add(
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'this.${property.name} = ${property.name};',
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);
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}
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}
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if (thisClassProperty != null) {
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accessors.add(PropertyGenerator(thisClassProperty).generate());
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}
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}
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if (constructorSetterCalls.isNotEmpty) {
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constructorSetterCalls.add('json.sortOnKey();');
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}
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if (superclass != null) {
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buffer.writeln('''
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class $className extends $superclassName {
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$className.fromJson(super.json) : super.fromJson();
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$className(${wrapBracesIfNotEmpty(constructorParams.join(', '))})
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: super(${superParams.join(',')})
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${wrapInBracesOrSemicolon(constructorSetterCalls.join('\n '))}
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''');
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if (setupParams.isNotEmpty) {
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buffer.writeln('''
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/// Setup all fields for [$className] that are not in
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/// [$superclassName].
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void setup (
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${wrapBracesIfNotEmpty(setupParams.join(','))}
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) {
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${constructorSetterCalls.join('\n')}
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}
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''');
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}
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buffer.writeln('''
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${accessors.join('\n')}
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@override
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String toString() => '$className(\$json)';
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}
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''');
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} else {
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buffer.writeln('''
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class $className {
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final Map<String, Object?> json;
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$className.fromJson(this.json);
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$className(${wrapBracesIfNotEmpty(constructorParams.join(', '))}) : json = {} {
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${constructorSetterCalls.join('\n ')}
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}
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${accessors.join('\n')}
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@override
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String toString() => '$className(\$json)';
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}
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''');
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}
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if (identifyingSubtype != null) {
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buffer.writeln('''
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extension ${className}Extension on $superclassName {
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bool get is$className => type == '$identifyingSubtype';
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$className get as$className => $className.fromJson(json);
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}
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''');
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}
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return buffer.toString();
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}
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}

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