Flutter 热更新无侵入方案（生成运行时库）

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Flutter 热更新无侵入方案（生成运行时库）

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1 Flutter 热更新无侵入方案（探讨）

flutter_runtime_ide 运行时生成IDE

已经很久没有写相关的文章了，主要在于每天研究时间很短，二是忙着研究怎么生成运行时库。虽然目前还有很多没有实现，我现在先同步一个大概的完成实现吧。

基本完成对于下面的运行库生成的支持

  • 类只读属性的获取
  • 类设置属性的设置
  • 类初始化方法调用
  • 类方法的调用
  • 类静态属性的获取
  • 类静态属性的设置
  • 类方法的调用
  • 全局属性的获取
  • 全局属性的设置
  • 全局方法的调用
  • 基础枚举值的获取

分析当前库的所有依赖

pub get

对于需要分析的库中将所有库生成支持运行时支持的库，需要分析出来所有的依赖库列表，这就需要我们提前执行pub get拉取所有的依赖库。

读取 package_config.json 里面的信息

在~/.dart_tool/package_config.json这个文件可以获取到最新的依赖的信息，主要包括如下的信息。

- configVersion 当前配置版本号
- generated 配置生成的具体时间
- generator 配置生成者
- generatorVersion 生成者的对应 Dart 版本
- packages 依赖库列表
  - name 库名称
  - rootUri 库对应的本地地址
  - packageUri 库源文件对应的路径
  - languageVersion 当前库要求的 Dart 版本
- configVersion 当前配置版本号
- generated 配置生成的具体时间
- generator 配置生成者
- generatorVersion 生成者的对应 Dart 版本
- packages 依赖库列表
  - name 库名称
  - rootUri 库对应的本地地址
  - packageUri 库源文件对应的路径
  - languageVersion 当前库要求的 Dart 版本
- configVersion 当前配置版本号
- generated 配置生成的具体时间
- generator 配置生成者
- generatorVersion 生成者的对应 Dart 版本
- packages 依赖库列表
	- name 库名称
	- rootUri 库对应的本地地址
	- packageUri 库源文件对应的路径
	- languageVersion 当前库要求的 Dart 版本

将配置的 JSON 信息转换成对象

import 'package:darty_json_safe/darty_json_safe.dart';
class PackageConfig {
  late int configVersion;
  late String generated;
  late String generator;
  late String generatorVersion;
  late List<PackageInfo> packages;
  PackageConfig.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    configVersion = jsonValue["configVersion"].intValue;
    generated = jsonValue["generated"].stringValue;
    generator = jsonValue["generator"].stringValue;
    generatorVersion = jsonValue["generatorVersion"].stringValue;
    packages = jsonValue["packages"]
        .listValue
        .map((e) => PackageInfo.fromJson(e))
        .toList();
  }
}
class PackageInfo {
  late String name;
  late String rootUri;
  late String packageUri;
  late String languageVersion;
  PackageInfo.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    name = jsonValue["name"].stringValue;
    rootUri = jsonValue["rootUri"].stringValue;
    packageUri = jsonValue["packageUri"].stringValue;
    languageVersion = jsonValue["languageVersion"].stringValue;
  }
}
import 'package:darty_json_safe/darty_json_safe.dart';

class PackageConfig {
  late int configVersion;
  late String generated;
  late String generator;
  late String generatorVersion;
  late List<PackageInfo> packages;




  PackageConfig.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    configVersion = jsonValue["configVersion"].intValue;
    generated = jsonValue["generated"].stringValue;
    generator = jsonValue["generator"].stringValue;
    generatorVersion = jsonValue["generatorVersion"].stringValue;
    packages = jsonValue["packages"]
        .listValue
        .map((e) => PackageInfo.fromJson(e))
        .toList();
  }

}


class PackageInfo {
  late String name;
  late String rootUri;
  late String packageUri;
  late String languageVersion;

  PackageInfo.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    name = jsonValue["name"].stringValue;
    rootUri = jsonValue["rootUri"].stringValue;
    packageUri = jsonValue["packageUri"].stringValue;
    languageVersion = jsonValue["languageVersion"].stringValue;
  }
}
import 'package:darty_json_safe/darty_json_safe.dart';

class PackageConfig {
  late int configVersion;
  late String generated;
  late String generator;
  late String generatorVersion;
  late List<PackageInfo> packages;




  PackageConfig.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    configVersion = jsonValue["configVersion"].intValue;
    generated = jsonValue["generated"].stringValue;
    generator = jsonValue["generator"].stringValue;
    generatorVersion = jsonValue["generatorVersion"].stringValue;
    packages = jsonValue["packages"]
        .listValue
        .map((e) => PackageInfo.fromJson(e))
        .toList();
  }

}


class PackageInfo {
  late String name;
  late String rootUri;
  late String packageUri;
  late String languageVersion;

  PackageInfo.fromJson(Map<String, dynamic> json) {
    final jsonValue = JSON(json);
    name = jsonValue["name"].stringValue;
    rootUri = jsonValue["rootUri"].stringValue;
    packageUri = jsonValue["packageUri"].stringValue;
    languageVersion = jsonValue["languageVersion"].stringValue;
  }
}

这里我用到自己之前发布的一个库darty_json_safe来解析就没用到官方解析的库了。

生成运行库

我们将上面分析出来的依赖配置信息放在可以全局访问，用于后续方便我们查找将关联类型的类进行引入。

分析库的路径

我们从 PackageInfo 中字段 rootUri 可以拿到依赖库具体的详细的地址，每个地址都是一个对应版本库的依赖，比如我们拿着 yaml 这个依赖库为例子。

file:///Users/king/.pub-cache/hosted/pub.flutter-io.cn/yaml-3.1.2
file:///Users/king/.pub-cache/hosted/pub.flutter-io.cn/yaml-3.1.2
file:///Users/king/.pub-cache/hosted/pub.flutter-io.cn/yaml-3.1.2

对于上面的地址，我们不能直接拿来进行使用，我们需要去掉最开始的字符串file://

运行库生成地址

我们将生成的运行库存放在本机电脑 $HOME/.runtime 目录，这个 $HOME 参数我们可以引用 process_run 这个库通过下面的方法可以获取到

platformEnvironment["HOME"] // 获取本机  HOME 目录
platformEnvironment["HOME"] // 获取本机  HOME 目录
platformEnvironment["HOME"] // 获取本机  HOME 目录

分析代码

具体分析的代码可以参考下面的文件

ConverRuntimePackage

AnalysisContextCollection

为了可以拿到当前分析库的代码信息，我们需要通过库 analyzer 中 AnalysisContextCollection 类来分析代码信息。

AnalysisContextCollection(
  sdkPath: getDartPath(),
  includedPaths: [join(packagePath, "lib")],
);
AnalysisContextCollection(
  sdkPath: getDartPath(),
  includedPaths: [join(packagePath, "lib")],
);
AnalysisContextCollection(
  sdkPath: getDartPath(),
  includedPaths: [join(packagePath, "lib")],
);

第一个参数是本地 Dart 库的地址，不设置分析就会报错。

第二个参数是分析源代码的文件夹或者具体文件路径

Dart 库的地址

我们可以通过下面的代码进行获取

String getDartPath() {
  // 获取当前  Dart  命令的具体路径
  String dartCommandPath = whichSync("dart") ?? "";
  // 将获取的  Dart  路径获取到当前文件夹 之后添加  cache/dart-sdk
  return join(dirname(dartCommandPath), "cache", "dart-sdk");
}
String getDartPath() {
  // 获取当前  Dart  命令的具体路径
  String dartCommandPath = whichSync("dart") ?? "";
  // 将获取的  Dart  路径获取到当前文件夹 之后添加  cache/dart-sdk
  return join(dirname(dartCommandPath), "cache", "dart-sdk");
}
String getDartPath() {
  // 获取当前  Dart  命令的具体路径
  String dartCommandPath = whichSync("dart") ?? "";
  // 将获取的  Dart  路径获取到当前文件夹 之后添加  cache/dart-sdk
  return join(dirname(dartCommandPath), "cache", "dart-sdk");
}

分析当前库的 pubspec 信息

可以引入 pubspec_parse 这个库来分析 pubspec.yaml 的信息。

final sourceFile = join(packagePath, "pubspec.yaml");
pubspec = Pubspec.parse(await File(sourceFile).readAsString());
final sourceFile = join(packagePath, "pubspec.yaml");
pubspec = Pubspec.parse(await File(sourceFile).readAsString());
final sourceFile = join(packagePath, "pubspec.yaml");
pubspec = Pubspec.parse(await File(sourceFile).readAsString());

分析代码文件

我们从提供的库路径获取到目录下面所有的源文件，我们默认为所有的的依赖库的源文件都在 lib 这个目录下。

// 获取到当前需要分析目录下面所有的子元素
List<FileSystemEntity> entitys = await Directory(dir).list(recursive: true).toList();
// 获取到当前需要分析目录下面所有的子元素
List<FileSystemEntity> entitys = await Directory(dir).list(recursive: true).toList();
// 获取到当前需要分析目录下面所有的子元素
List<FileSystemEntity> entitys = await Directory(dir).list(recursive: true).toList();

通过 AnalysisContext 对象拿到对应代码文件的分析结果

AnalysisContext context = analysisContextCollection.contextFor(path);
SomeResolvedLibraryResult result = await context.currentSession.getResolvedLibrary(path);
AnalysisContext context = analysisContextCollection.contextFor(path);
SomeResolvedLibraryResult result = await context.currentSession.getResolvedLibrary(path);
AnalysisContext context = analysisContextCollection.contextFor(path);
SomeResolvedLibraryResult result = await context.currentSession.getResolvedLibrary(path);

SomeResolvedLibraryResult 存在有多个子类，我们暂时只分析 ResolvedLibraryResult 这个子类的内容。

分析 Class

获取当前代码文件所有可以被公开访问的类

final classes = result.element.units[0].classes.where((element) {
  return !element.name.isPrivate;
});
bool get isPrivate => startsWith("_");
final classes = result.element.units[0].classes.where((element) {
  return !element.name.isPrivate;
});



bool get isPrivate => startsWith("_");
final classes = result.element.units[0].classes.where((element) {
  return !element.name.isPrivate;
});



bool get isPrivate => startsWith("_");

虽然 result.element.units 是一个数组 但是目前还没有遇到存在两个的，所以就暂时用一个座位分析研究

每一个类分析出来都是一个 ClassElement 对象，我们可以从这里面找到需要的信息。

- String name // 获取类名称
- List<FieldElement> fields // 获取类的属性
  - PropertyAccessorElement getter // 获取只读的属性
  - PropertyAccessorElement setter // 获取可以设置的属性
- List<MethodElement> methods // 获取类的方法
- List<ConstructorElement> constructors // 获取类的构造方法
- Bool isAbstract // 是否是抽象类
- String name // 获取类名称
- List<FieldElement> fields // 获取类的属性
  - PropertyAccessorElement getter // 获取只读的属性
  - PropertyAccessorElement setter // 获取可以设置的属性
- List<MethodElement> methods // 获取类的方法
- List<ConstructorElement> constructors // 获取类的构造方法
- Bool isAbstract // 是否是抽象类
- String name // 获取类名称
- List<FieldElement> fields // 获取类的属性
	- PropertyAccessorElement getter // 获取只读的属性
	- PropertyAccessorElement setter // 获取可以设置的属性
- List<MethodElement> methods // 获取类的方法
- List<ConstructorElement> constructors // 获取类的构造方法
- Bool isAbstract // 是否是抽象类
分析 PropertyAccessorElement
- String name // 属性名称
- String isStatic // 是否是静态属性
- String name // 属性名称
- String isStatic // 是否是静态属性
- String name // 属性名称
- String isStatic // 是否是静态属性

对于属性的名称我们要处理本身就带有 $和=号的特殊字符

对于 $ 我们可以添加 \进行转移

对于尾部带有 = 的我们需要将 = 号进行移除

分析 MethodElement
- String name // 获取方法名称
- List<ParameterElement> parameters // 获取方法参数列表
- String name // 获取方法名称
- List<ParameterElement> parameters // 获取方法参数列表
- String name // 获取方法名称
- List<ParameterElement> parameters // 获取方法参数列表
分析 ConstructorElement
- String name // 构造方法名称可能为空
- List<ParameterElement> parameters // 构造的参数列表
- String name // 构造方法名称可能为空
- List<ParameterElement> parameters // 构造的参数列表
- String name // 构造方法名称可能为空
- List<ParameterElement> parameters // 构造的参数列表
分析 ParameterElement
- String name // 参数名称
- bool isNamed // 是否是名字参数
- bool hasDefaultValue // 是否有默认值
- String defaultValueCode // 默认值
- String name // 参数名称
- bool isNamed // 是否是名字参数
- bool hasDefaultValue // 是否有默认值
- String defaultValueCode // 默认值
- String name // 参数名称
- bool isNamed // 是否是名字参数
- bool hasDefaultValue // 是否有默认值
- String defaultValueCode // 默认值
分析 FunctionElement
- String name // 全局方法名称
- List<ParameterElement> parameters // 全局方法参数
- String name // 全局方法名称
- List<ParameterElement> parameters // 全局方法参数
- String name // 全局方法名称
- List<ParameterElement> parameters // 全局方法参数
分析 EnumElement
- String name // 枚举名称
- List<FieldElementImpl> constructors // 枚举值
  - String name 枚举值名称
- String name // 枚举名称
- List<FieldElementImpl> constructors // 枚举值
  - String name 枚举值名称
- String name // 枚举名称
- List<FieldElementImpl> constructors // 枚举值
	- String name 枚举值名称

生成代码

我们已经通过分析代码拿到了基本的信息，剩下的我们通过获取的值通过 Mustache 模版语法来实现我们的生成代码。

对于 Mustache 我们可以通过 mustache_template 这个库来提供支持。

flutter_runtime

flutter_runtime是提供运行时基础能力的，后续会根据需求调整。

abstract class FlutterRuntime<T> {
  // 当前运行类的实例
  final T runtime;
  FlutterRuntime(this.runtime);
  // 获取当前类公开只读的属性
  dynamic getField(String fieldName);
  // 设置类公开的设置属性
  void setField(String fieldName, dynamic value);
  // 执行当前类的公开方法
  dynamic call(String methodName, [Map args = const {}]);
  // 根据类名创建当前类实例
  dynamic createInstance(
    String packageName,
    String libraryPath,
    String className, [
    Map args = const {},
  ]) {
    return null;
  }
}
abstract class FlutterRuntime<T> {
  // 当前运行类的实例
  final T runtime;
  FlutterRuntime(this.runtime);

  // 获取当前类公开只读的属性
  dynamic getField(String fieldName);
  // 设置类公开的设置属性
  void setField(String fieldName, dynamic value);
  // 执行当前类的公开方法
  dynamic call(String methodName, [Map args = const {}]);
  // 根据类名创建当前类实例
  dynamic createInstance(
    String packageName,
    String libraryPath,
    String className, [
    Map args = const {},
  ]) {
    return null;
  }

}
abstract class FlutterRuntime<T> {
  // 当前运行类的实例
  final T runtime;
  FlutterRuntime(this.runtime);

  // 获取当前类公开只读的属性
  dynamic getField(String fieldName);
  // 设置类公开的设置属性
  void setField(String fieldName, dynamic value);
  // 执行当前类的公开方法
  dynamic call(String methodName, [Map args = const {}]);
  // 根据类名创建当前类实例
  dynamic createInstance(
    String packageName,
    String libraryPath,
    String className, [
    Map args = const {},
  ]) {
    return null;
  }

}

我们生成的每一个运行时对象都要基于这个抽象类来生成。

pubspec.yaml

对于生成的运行时库，我们需要创建一个 pubspec.yaml

name: {{pubName}}_runtime
environment:
  sdk: '>=2.18.0 <3.0.0'
dependencies:
  flutter_runtime:
    path: {{{flutterRuntimePath}}}
  {{pubName}}:
    path: {{{pubPath}}}
  darty_json_safe: ^1.0.1
name: {{pubName}}_runtime
environment:
  sdk: '>=2.18.0 <3.0.0'



dependencies:
  flutter_runtime:
    path: {{{flutterRuntimePath}}}
  {{pubName}}:
    path: {{{pubPath}}}
  darty_json_safe: ^1.0.1
name: {{pubName}}_runtime
environment:
  sdk: '>=2.18.0 <3.0.0'



dependencies:
  flutter_runtime:
    path: {{{flutterRuntimePath}}}
  {{pubName}}:
    path: {{{pubPath}}}
  darty_json_safe: ^1.0.1

  • pubName

    源包名

  • flutterRuntimePath

    flutter_runtime 依赖的地址

  • pubPath

    源包依赖的地址

生成运行时代码文件
// ignore_for_file: implementation_imports, unused_import
import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
# 根据提供的依赖路径生成需要导入的依赖
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}
# 生成运行时  Class
{{#classes}}
{{>classMustache}}
{{/classes}}
// ignore_for_file: implementation_imports, unused_import

import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
# 根据提供的依赖路径生成需要导入的依赖
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}




# 生成运行时  Class
{{#classes}}
{{>classMustache}}
{{/classes}}
// ignore_for_file: implementation_imports, unused_import

import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
# 根据提供的依赖路径生成需要导入的依赖
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}




# 生成运行时  Class
{{#classes}}
{{>classMustache}}
{{/classes}}
生成运行时 Class
class \${{className}}\$ extends FlutterRuntime<{{className}}>{
# 生成必要的运行时构造器
\${{className}}\$(super.runtime);
# 生成只读属性的运行时方法
{{>getFieldMustache}}
# 生成设置属性的运行时方法
{{>setFieldMustache}}
# 生成方法运行时调用
{{>methodMustache}}
# 生成构造方法的运行时调用
{{>constructorMustache}}
}
class \${{className}}\$ extends FlutterRuntime<{{className}}>{
# 生成必要的运行时构造器
\${{className}}\$(super.runtime);



# 生成只读属性的运行时方法
{{>getFieldMustache}}


# 生成设置属性的运行时方法
{{>setFieldMustache}}

# 生成方法运行时调用
{{>methodMustache}}

# 生成构造方法的运行时调用
{{>constructorMustache}}
}
class \${{className}}\$ extends FlutterRuntime<{{className}}>{
# 生成必要的运行时构造器
\${{className}}\$(super.runtime);



# 生成只读属性的运行时方法
{{>getFieldMustache}}


# 生成设置属性的运行时方法
{{>setFieldMustache}}

# 生成方法运行时调用
{{>methodMustache}}

# 生成构造方法的运行时调用
{{>constructorMustache}}
}
只读属性运行时方法
@override
dynamic getField(String fieldName) {
  # 便利只读属性的列表
  {{#getFields}}
    # 是静态的属性
    {{#isStatic}}
      if (fieldName == "{{fieldName}}") return {{className}}.{{fieldName}};
    {{/isStatic}}
    # 不是静态属性
    {{^isStatic}}
      if (fieldName == "{{fieldName}}") return runtime.{{fieldName}};
    {{/isStatic}}
  {{/getFields}}
}
@override


dynamic getField(String fieldName) {
  # 便利只读属性的列表
  {{#getFields}}
    # 是静态的属性
    {{#isStatic}}
      if (fieldName == "{{fieldName}}") return {{className}}.{{fieldName}};
    {{/isStatic}}
    # 不是静态属性
    {{^isStatic}}
      if (fieldName == "{{fieldName}}") return runtime.{{fieldName}};
    {{/isStatic}}
  {{/getFields}}
}
@override


dynamic getField(String fieldName) {
	# 便利只读属性的列表
  {{#getFields}}
  	# 是静态的属性
    {{#isStatic}}
    	if (fieldName == "{{fieldName}}") return {{className}}.{{fieldName}};
    {{/isStatic}}
    # 不是静态属性
    {{^isStatic}}
   	 if (fieldName == "{{fieldName}}") return runtime.{{fieldName}};
    {{/isStatic}}
  {{/getFields}}
}
设置属性的运行时方法
@override
void setField(String fieldName, dynamic value) {
  # 设置属性的列表
  {{#setFields}}
    {{#isStatic}}
      if (fieldName == "{{fieldName}}") {{className}}.{{fieldName}} = value;
    {{/isStatic}}
    {{^isStatic}}
      if (fieldName == "{{fieldName}}") runtime.{{fieldName}} = value;
    {{/isStatic}}
  {{/setFields}}
}
@override


void setField(String fieldName, dynamic value) {
  # 设置属性的列表
  {{#setFields}}
    {{#isStatic}}
      if (fieldName == "{{fieldName}}") {{className}}.{{fieldName}} = value;
    {{/isStatic}}
    {{^isStatic}}
      if (fieldName == "{{fieldName}}") runtime.{{fieldName}} = value;
    {{/isStatic}}
  {{/setFields}}
}
@override


void setField(String fieldName, dynamic value) {
	# 设置属性的列表
  {{#setFields}}
    {{#isStatic}}
      if (fieldName == "{{fieldName}}") {{className}}.{{fieldName}} = value;
    {{/isStatic}}
    {{^isStatic}}
      if (fieldName == "{{fieldName}}") runtime.{{fieldName}} = value;
    {{/isStatic}}
  {{/setFields}}
}
方法的运行时方法
@override
dynamic call(String methodName,[Map args = const {}]) {
  # 类中的方法列表
  {{#methods}}
  {{>functionMustache}}
  {{/methods}}
}
# functionMustache
# 是否是自定义调用代码 针对一些[]这种数组和字典的方式
{{#isCustomCall}}
  if (methodName == '{{methodName}}') return {{{customCallCode}}};
{{/isCustomCall}}
{{^isCustomCall}}
  if (methodName == '{{methodName}}') return runtime.{{methodName}}(
    # 方法的参数列表
    {{#parameters}}
      # 是名称参数
      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      # 不是名称参数
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
  );
{{/isCustomCall}}
@override


dynamic call(String methodName,[Map args = const {}]) {
  # 类中的方法列表
  {{#methods}}
  {{>functionMustache}}
  {{/methods}}
}
# functionMustache
# 是否是自定义调用代码 针对一些[]这种数组和字典的方式
{{#isCustomCall}}
  if (methodName == '{{methodName}}') return {{{customCallCode}}};
{{/isCustomCall}}
{{^isCustomCall}}
  if (methodName == '{{methodName}}') return runtime.{{methodName}}(
    # 方法的参数列表
    {{#parameters}}

      # 是名称参数
      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      # 不是名称参数
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
  );
{{/isCustomCall}}
@override


dynamic call(String methodName,[Map args = const {}]) {
	# 类中的方法列表
  {{#methods}}
  {{>functionMustache}}
  {{/methods}}
}
# functionMustache
# 是否是自定义调用代码 针对一些[]这种数组和字典的方式
{{#isCustomCall}}
  if (methodName == '{{methodName}}') return {{{customCallCode}}};
{{/isCustomCall}}
{{^isCustomCall}}
  if (methodName == '{{methodName}}') return runtime.{{methodName}}(
  	# 方法的参数列表
    {{#parameters}}

    	# 是名称参数
      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      # 不是名称参数
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
  );
{{/isCustomCall}}
构造方法的运行时方法
{{className}}? createRuntimeInstance(String constructorName,[Map args = const {},]) {
  # 是否是抽象方法 抽象方法不支持构造函数
  {{^isAbstract}}
    # 构造方法列表
    {{#constructors}}
      if (constructorName == "{{constructorName}}")
        return {{className}}{{#isName}}.{{constructorName}}{{/isName}}(
          {{#parameters}}
            {{#isNamed}}
              {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
            {{^isNamed}}
              {{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
          {{/parameters}}
        );
    {{/constructors}}
  {{/isAbstract}}
  return null;
} 
{{className}}? createRuntimeInstance(String constructorName,[Map args = const {},]) {
  # 是否是抽象方法 抽象方法不支持构造函数
  {{^isAbstract}}
    # 构造方法列表
    {{#constructors}}
      if (constructorName == "{{constructorName}}")
        return {{className}}{{#isName}}.{{constructorName}}{{/isName}}(
          {{#parameters}}
            {{#isNamed}}
              {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
            {{^isNamed}}
              {{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
          {{/parameters}}
        );
    {{/constructors}}
  {{/isAbstract}}
  return null;
} 
{{className}}? createRuntimeInstance(String constructorName,[Map args = const {},]) {
	# 是否是抽象方法 抽象方法不支持构造函数
  {{^isAbstract}}
  	# 构造方法列表
    {{#constructors}}
      if (constructorName == "{{constructorName}}")
        return {{className}}{{#isName}}.{{constructorName}}{{/isName}}(
          {{#parameters}}
            {{#isNamed}}
              {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
            {{^isNamed}}
              {{>createInstanceMustache}}{{>defaultValueMustache}},
            {{/isNamed}}
          {{/parameters}}
        );
    {{/constructors}}
  {{/isAbstract}}
  return null;
}
全局调用的运行时
// ignore_for_file: implementation_imports, unused_import
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}
# 因为全局没有一个对应类 所以就直接用  dynamic  后面可以通过 null  进行创建
class \$GlobalRuntime\$ extends FlutterRuntime<dynamic> {
 \$GlobalRuntime\$(super.runtime);
  
  # 全局的方法 直接可以调用 不需要 runtime
  dynamic call(String methodName, [Map args = const {}]) {
    {{#functions}}
      if (methodName == '{{methodName}}') return {{methodName}}(
    {{#parameters}}
      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
    );
    {{/functions}}
  }
  @override
  getField(String fieldName) {
    {{#getFields}}
        if (fieldName == '{{fieldName}}') return {{fieldValue}};
    {{/getFields}}
  }
    
  @override
  void setField(String fieldName, value) {
    {{#setFields}}
      if (fieldName == "{{fieldName}}") {{fieldName}} = value;
    {{/setFields}}
  }
  dynamic getEnumValue(String enumName, String constructorName) {
    {{#enums}}
      if (enumName == "{{enumName}}"){
        {{#constructors}}
          if (constructorName == '{{constructorName}}') {
            return {{enumName}}.{{constructorName}};
          }
        {{/constructors}}
      }
    {{/enums}}
    return null;  
  }
} 
// ignore_for_file: implementation_imports, unused_import

import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}


# 因为全局没有一个对应类 所以就直接用  dynamic  后面可以通过 null  进行创建
class \$GlobalRuntime\$ extends FlutterRuntime<dynamic> {
 \$GlobalRuntime\$(super.runtime);
  
  # 全局的方法 直接可以调用 不需要 runtime
  dynamic call(String methodName, [Map args = const {}]) {
    {{#functions}}
      if (methodName == '{{methodName}}') return {{methodName}}(
    {{#parameters}}

      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
    );
    {{/functions}}
  }

  @override
  getField(String fieldName) {
    {{#getFields}}
        if (fieldName == '{{fieldName}}') return {{fieldValue}};
    {{/getFields}}
  }
    
  @override
  void setField(String fieldName, value) {
    {{#setFields}}
      if (fieldName == "{{fieldName}}") {{fieldName}} = value;
    {{/setFields}}
  }

  dynamic getEnumValue(String enumName, String constructorName) {
    {{#enums}}
      if (enumName == "{{enumName}}"){
        {{#constructors}}
          if (constructorName == '{{constructorName}}') {
            return {{enumName}}.{{constructorName}};
          }
        {{/constructors}}
      }
    {{/enums}}
    return null;  
  }
} 
// ignore_for_file: implementation_imports, unused_import

import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
{{#paths}}
import '{{{sourcePath}}}';
{{/paths}}


# 因为全局没有一个对应类 所以就直接用  dynamic  后面可以通过 null  进行创建
class \$GlobalRuntime\$ extends FlutterRuntime<dynamic> {
 \$GlobalRuntime\$(super.runtime);
	
	# 全局的方法 直接可以调用 不需要 runtime
  dynamic call(String methodName, [Map args = const {}]) {
    {{#functions}}
      if (methodName == '{{methodName}}') return {{methodName}}(
    {{#parameters}}

      {{#isNamed}}
        {{parameterName}}:{{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
      {{^isNamed}}
        {{>createInstanceMustache}}{{>defaultValueMustache}},
      {{/isNamed}}
    {{/parameters}}
    );
    {{/functions}}
  }

  @override
  getField(String fieldName) {
    {{#getFields}}
        if (fieldName == '{{fieldName}}') return {{fieldValue}};
    {{/getFields}}
  }
    
  @override
  void setField(String fieldName, value) {
    {{#setFields}}
      if (fieldName == "{{fieldName}}") {{fieldName}} = value;
    {{/setFields}}
  }

  dynamic getEnumValue(String enumName, String constructorName) {
    {{#enums}}
      if (enumName == "{{enumName}}"){
        {{#constructors}}
          if (constructorName == '{{constructorName}}') {
            return {{enumName}}.{{constructorName}};
          }
        {{/constructors}}
      }
    {{/enums}}
    return null;  
  }
}

一些技术点

怎么让生成的代码不报错？
  • 让生成的类所属的文件作为依赖引入
  • 让默认值关联的对象所属的文件作为依赖引入
对于 [] 和 == 好方法的处理
String? get customCallCode {
    if (name == '[]=' && parameters.length == 2) {
      return '''runtime[args['${parameters[0].name}']] = args['${parameters[1].name}']''';
    } else if (name == '==' && parameters.length == 1) {
      return '''runtime == args['${parameters[0].name}']''';
    } else {
      return null;
    }
  }
String? get customCallCode {
    if (name == '[]=' && parameters.length == 2) {
      return '''runtime[args['${parameters[0].name}']] = args['${parameters[1].name}']''';
    } else if (name == '==' && parameters.length == 1) {
      return '''runtime == args['${parameters[0].name}']''';
    } else {
      return null;
    }
  }
String? get customCallCode {
    if (name == '[]=' && parameters.length == 2) {
      return '''runtime[args['${parameters[0].name}']] = args['${parameters[1].name}']''';
    } else if (name == '==' && parameters.length == 1) {
      return '''runtime == args['${parameters[0].name}']''';
    } else {
      return null;
    }
  }

如果判断方法名称为 [] 或者 == 就生成自定义的调用代码生成。

获取默认值对应对象所在的库文件路径
String? get defaultValueImportPath {
  if (!hasDefaultValue || this is! DefaultParameterElementImpl) return null;
  DefaultParameterElementImpl parameter = this as DefaultParameterElementImpl;
  final constantInitializer = parameter.constantInitializer;
  if (constantInitializer == null ||
      constantInitializer is! PrefixedIdentifier) return null;
  return constantInitializer.staticElement?.librarySource?.importPath;
}
extension SourceImport on Source {
  String? get importPath {
    final packages =
        Get.find<HomeController>().packageConfig.value?.packages ?? [];
    List<PackageInfo> infos = packages.where((element) {
      return fullName.startsWith(element.rootUri.replaceFirst("file://", ""));
    }).toList();
    if (infos.isEmpty) return null;
    PackageInfo info = infos[0];
    final path = fullName.split("/lib/").last;
    return 'package:${info.name}/$path';
  }
}
String? get defaultValueImportPath {
  if (!hasDefaultValue || this is! DefaultParameterElementImpl) return null;
  DefaultParameterElementImpl parameter = this as DefaultParameterElementImpl;
  final constantInitializer = parameter.constantInitializer;
  if (constantInitializer == null ||
      constantInitializer is! PrefixedIdentifier) return null;
  return constantInitializer.staticElement?.librarySource?.importPath;
}




extension SourceImport on Source {
  String? get importPath {
    final packages =
        Get.find<HomeController>().packageConfig.value?.packages ?? [];
    List<PackageInfo> infos = packages.where((element) {
      return fullName.startsWith(element.rootUri.replaceFirst("file://", ""));
    }).toList();
    if (infos.isEmpty) return null;
    PackageInfo info = infos[0];
    final path = fullName.split("/lib/").last;
    return 'package:${info.name}/$path';
  }
}
String? get defaultValueImportPath {
  if (!hasDefaultValue || this is! DefaultParameterElementImpl) return null;
  DefaultParameterElementImpl parameter = this as DefaultParameterElementImpl;
  final constantInitializer = parameter.constantInitializer;
  if (constantInitializer == null ||
      constantInitializer is! PrefixedIdentifier) return null;
  return constantInitializer.staticElement?.librarySource?.importPath;
}




extension SourceImport on Source {
  String? get importPath {
    final packages =
        Get.find<HomeController>().packageConfig.value?.packages ?? [];
    List<PackageInfo> infos = packages.where((element) {
      return fullName.startsWith(element.rootUri.replaceFirst("file://", ""));
    }).toList();
    if (infos.isEmpty) return null;
    PackageInfo info = infos[0];
    final path = fullName.split("/lib/").last;
    return 'package:${info.name}/$path';
  }
}

运行库生成例子

普通类文件

// ignore_for_file: implementation_imports, unused_import
import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/event.dart';
class $Event$ extends FlutterRuntime<Event> {
  $Event$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "type") return runtime.type;
    if (fieldName == "span") return runtime.span;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }
  Event? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return Event(
        args['type'],
        args['span'],
      );
    return null;
  }
}
class $DocumentStartEvent$ extends FlutterRuntime<DocumentStartEvent> {
  $DocumentStartEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "versionDirective") return runtime.versionDirective;
    if (fieldName == "tagDirectives") return runtime.tagDirectives;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }
  DocumentStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentStartEvent(
        args['span'],
        versionDirective: args['versionDirective'],
        tagDirectives: args['tagDirectives'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}
class $DocumentEndEvent$ extends FlutterRuntime<DocumentEndEvent> {
  $DocumentEndEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }
  DocumentEndEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentEndEvent(
        args['span'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}
class $AliasEvent$ extends FlutterRuntime<AliasEvent> {
  $AliasEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "name") return runtime.name;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }
  AliasEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return AliasEvent(
        args['span'],
        args['name'],
      );
    return null;
  }
}
class $ScalarEvent$ extends FlutterRuntime<ScalarEvent> {
  $ScalarEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "value") return runtime.value;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }
  ScalarEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return ScalarEvent(
        args['span'],
        args['value'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}
class $SequenceStartEvent$ extends FlutterRuntime<SequenceStartEvent> {
  $SequenceStartEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {}
  SequenceStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return SequenceStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}
class $MappingStartEvent$ extends FlutterRuntime<MappingStartEvent> {
  $MappingStartEvent$(super.runtime);
  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }
  @override
  void setField(String fieldName, dynamic value) {}
  @override
  dynamic call(String methodName, [Map args = const {}]) {}
  MappingStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return MappingStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}
// ignore_for_file: implementation_imports, unused_import

import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/event.dart';

class $Event$ extends FlutterRuntime<Event> {
  $Event$(super.runtime);




  @override
  dynamic getField(String fieldName) {
    if (fieldName == "type") return runtime.type;
    if (fieldName == "span") return runtime.span;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  Event? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return Event(
        args['type'],
        args['span'],
      );
    return null;
  }
}

class $DocumentStartEvent$ extends FlutterRuntime<DocumentStartEvent> {
  $DocumentStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "versionDirective") return runtime.versionDirective;
    if (fieldName == "tagDirectives") return runtime.tagDirectives;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  DocumentStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentStartEvent(
        args['span'],
        versionDirective: args['versionDirective'],
        tagDirectives: args['tagDirectives'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}

class $DocumentEndEvent$ extends FlutterRuntime<DocumentEndEvent> {
  $DocumentEndEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  DocumentEndEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentEndEvent(
        args['span'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}

class $AliasEvent$ extends FlutterRuntime<AliasEvent> {
  $AliasEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "name") return runtime.name;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  AliasEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return AliasEvent(
        args['span'],
        args['name'],
      );
    return null;
  }
}

class $ScalarEvent$ extends FlutterRuntime<ScalarEvent> {
  $ScalarEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "value") return runtime.value;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  ScalarEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return ScalarEvent(
        args['span'],
        args['value'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}

class $SequenceStartEvent$ extends FlutterRuntime<SequenceStartEvent> {
  $SequenceStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {}

  SequenceStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return SequenceStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}

class $MappingStartEvent$ extends FlutterRuntime<MappingStartEvent> {
  $MappingStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {}

  MappingStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return MappingStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}
// ignore_for_file: implementation_imports, unused_import

import 'dart:async';
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/event.dart';

class $Event$ extends FlutterRuntime<Event> {
  $Event$(super.runtime);




  @override
  dynamic getField(String fieldName) {
    if (fieldName == "type") return runtime.type;
    if (fieldName == "span") return runtime.span;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  Event? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return Event(
        args['type'],
        args['span'],
      );
    return null;
  }
}

class $DocumentStartEvent$ extends FlutterRuntime<DocumentStartEvent> {
  $DocumentStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "versionDirective") return runtime.versionDirective;
    if (fieldName == "tagDirectives") return runtime.tagDirectives;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  DocumentStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentStartEvent(
        args['span'],
        versionDirective: args['versionDirective'],
        tagDirectives: args['tagDirectives'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}

class $DocumentEndEvent$ extends FlutterRuntime<DocumentEndEvent> {
  $DocumentEndEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "isImplicit") return runtime.isImplicit;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  DocumentEndEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return DocumentEndEvent(
        args['span'],
        isImplicit: args['isImplicit'] ?? true,
      );
    return null;
  }
}

class $AliasEvent$ extends FlutterRuntime<AliasEvent> {
  $AliasEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "name") return runtime.name;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  AliasEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return AliasEvent(
        args['span'],
        args['name'],
      );
    return null;
  }
}

class $ScalarEvent$ extends FlutterRuntime<ScalarEvent> {
  $ScalarEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "value") return runtime.value;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'toString') return runtime.toString();
  }

  ScalarEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return ScalarEvent(
        args['span'],
        args['value'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}

class $SequenceStartEvent$ extends FlutterRuntime<SequenceStartEvent> {
  $SequenceStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {}

  SequenceStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return SequenceStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}

class $MappingStartEvent$ extends FlutterRuntime<MappingStartEvent> {
  $MappingStartEvent$(super.runtime);

  @override
  dynamic getField(String fieldName) {
    if (fieldName == "span") return runtime.span;
    if (fieldName == "anchor") return runtime.anchor;
    if (fieldName == "tag") return runtime.tag;
    if (fieldName == "style") return runtime.style;
    if (fieldName == "type") return runtime.type;
  }

  @override
  void setField(String fieldName, dynamic value) {}

  @override
  dynamic call(String methodName, [Map args = const {}]) {}

  MappingStartEvent? createRuntimeInstance(
    String constructorName, [
    Map args = const {},
  ]) {
    if (constructorName == "")
      return MappingStartEvent(
        args['span'],
        args['style'],
        anchor: args['anchor'],
        tag: args['tag'],
      );
    return null;
  }
}

全局运行时

// ignore_for_file: implementation_imports, unused_import
import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/utils.dart';
import 'package:yaml/src/charcodes.dart';
import 'package:yaml/yaml.dart';
import 'package:yaml/src/equality.dart';
import 'package:yaml/src/yaml_node.dart';
import 'package:yaml/src/event.dart';
import 'package:yaml/src/token.dart';
class $GlobalRuntime$ extends FlutterRuntime<dynamic> {
  $GlobalRuntime$(super.runtime);
  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'loadYaml')
      return loadYaml(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlNode')
      return loadYamlNode(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlDocument')
      return loadYamlDocument(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlStream')
      return loadYamlStream(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'loadYamlDocuments')
      return loadYamlDocuments(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'warn')
      return warn(
        args['message'],
        args['span'],
      );
    if (methodName == 'deepEqualsMap') return deepEqualsMap();
    if (methodName == 'deepEquals')
      return deepEquals(
        args['obj1'],
        args['obj2'],
      );
    if (methodName == 'deepHashCode')
      return deepHashCode(
        args['obj'],
      );
    if (methodName == 'setSpan')
      return setSpan(
        args['node'],
        args['span'],
      );
  }
  @override
  getField(String fieldName) {
    if (fieldName == 'yamlWarningCallback') return yamlWarningCallback;
    if (fieldName == '\$plus') return $plus;
    if (fieldName == '\$minus') return $minus;
    if (fieldName == '\$dot') return $dot;
    if (fieldName == '\$0') return $0;
    if (fieldName == '\$9') return $9;
    if (fieldName == '\$F') return $F;
    if (fieldName == '\$N') return $N;
    if (fieldName == '\$T') return $T;
    if (fieldName == '\$f') return $f;
    if (fieldName == '\$n') return $n;
    if (fieldName == '\$o') return $o;
    if (fieldName == '\$t') return $t;
    if (fieldName == '\$x') return $x;
    if (fieldName == '\$tilde') return $tilde;
  }
  @override
  void setField(String fieldName, value) {
    if (fieldName == "yamlWarningCallback") yamlWarningCallback = value;
  }
  dynamic getEnumValue(String enumName, String constructorName) {
    if (enumName == "EventType") {
      if (constructorName == 'streamStart') {
        return EventType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return EventType.streamEnd;
      }
      if (constructorName == 'documentStart') {
        return EventType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return EventType.documentEnd;
      }
      if (constructorName == 'alias') {
        return EventType.alias;
      }
      if (constructorName == 'scalar') {
        return EventType.scalar;
      }
      if (constructorName == 'sequenceStart') {
        return EventType.sequenceStart;
      }
      if (constructorName == 'sequenceEnd') {
        return EventType.sequenceEnd;
      }
      if (constructorName == 'mappingStart') {
        return EventType.mappingStart;
      }
      if (constructorName == 'mappingEnd') {
        return EventType.mappingEnd;
      }
    }
    if (enumName == "TokenType") {
      if (constructorName == 'streamStart') {
        return TokenType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return TokenType.streamEnd;
      }
      if (constructorName == 'versionDirective') {
        return TokenType.versionDirective;
      }
      if (constructorName == 'tagDirective') {
        return TokenType.tagDirective;
      }
      if (constructorName == 'documentStart') {
        return TokenType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return TokenType.documentEnd;
      }
      if (constructorName == 'blockSequenceStart') {
        return TokenType.blockSequenceStart;
      }
      if (constructorName == 'blockMappingStart') {
        return TokenType.blockMappingStart;
      }
      if (constructorName == 'blockEnd') {
        return TokenType.blockEnd;
      }
      if (constructorName == 'flowSequenceStart') {
        return TokenType.flowSequenceStart;
      }
      if (constructorName == 'flowSequenceEnd') {
        return TokenType.flowSequenceEnd;
      }
      if (constructorName == 'flowMappingStart') {
        return TokenType.flowMappingStart;
      }
      if (constructorName == 'flowMappingEnd') {
        return TokenType.flowMappingEnd;
      }
      if (constructorName == 'blockEntry') {
        return TokenType.blockEntry;
      }
      if (constructorName == 'flowEntry') {
        return TokenType.flowEntry;
      }
      if (constructorName == 'key') {
        return TokenType.key;
      }
      if (constructorName == 'value') {
        return TokenType.value;
      }
      if (constructorName == 'alias') {
        return TokenType.alias;
      }
      if (constructorName == 'anchor') {
        return TokenType.anchor;
      }
      if (constructorName == 'tag') {
        return TokenType.tag;
      }
      if (constructorName == 'scalar') {
        return TokenType.scalar;
      }
    }
    return null;
  }
}
// ignore_for_file: implementation_imports, unused_import

import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/utils.dart';
import 'package:yaml/src/charcodes.dart';
import 'package:yaml/yaml.dart';
import 'package:yaml/src/equality.dart';
import 'package:yaml/src/yaml_node.dart';
import 'package:yaml/src/event.dart';
import 'package:yaml/src/token.dart';

class $GlobalRuntime$ extends FlutterRuntime<dynamic> {
  $GlobalRuntime$(super.runtime);

  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'loadYaml')
      return loadYaml(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlNode')
      return loadYamlNode(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlDocument')
      return loadYamlDocument(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlStream')
      return loadYamlStream(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'loadYamlDocuments')
      return loadYamlDocuments(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'warn')
      return warn(
        args['message'],
        args['span'],
      );
    if (methodName == 'deepEqualsMap') return deepEqualsMap();
    if (methodName == 'deepEquals')
      return deepEquals(
        args['obj1'],
        args['obj2'],
      );
    if (methodName == 'deepHashCode')
      return deepHashCode(
        args['obj'],
      );
    if (methodName == 'setSpan')
      return setSpan(
        args['node'],
        args['span'],
      );
  }

  @override
  getField(String fieldName) {
    if (fieldName == 'yamlWarningCallback') return yamlWarningCallback;
    if (fieldName == '\$plus') return $plus;
    if (fieldName == '\$minus') return $minus;
    if (fieldName == '\$dot') return $dot;
    if (fieldName == '\$0') return $0;
    if (fieldName == '\$9') return $9;
    if (fieldName == '\$F') return $F;
    if (fieldName == '\$N') return $N;
    if (fieldName == '\$T') return $T;
    if (fieldName == '\$f') return $f;
    if (fieldName == '\$n') return $n;
    if (fieldName == '\$o') return $o;
    if (fieldName == '\$t') return $t;
    if (fieldName == '\$x') return $x;
    if (fieldName == '\$tilde') return $tilde;
  }

  @override
  void setField(String fieldName, value) {
    if (fieldName == "yamlWarningCallback") yamlWarningCallback = value;
  }

  dynamic getEnumValue(String enumName, String constructorName) {
    if (enumName == "EventType") {
      if (constructorName == 'streamStart') {
        return EventType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return EventType.streamEnd;
      }
      if (constructorName == 'documentStart') {
        return EventType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return EventType.documentEnd;
      }
      if (constructorName == 'alias') {
        return EventType.alias;
      }
      if (constructorName == 'scalar') {
        return EventType.scalar;
      }
      if (constructorName == 'sequenceStart') {
        return EventType.sequenceStart;
      }
      if (constructorName == 'sequenceEnd') {
        return EventType.sequenceEnd;
      }
      if (constructorName == 'mappingStart') {
        return EventType.mappingStart;
      }
      if (constructorName == 'mappingEnd') {
        return EventType.mappingEnd;
      }
    }
    if (enumName == "TokenType") {
      if (constructorName == 'streamStart') {
        return TokenType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return TokenType.streamEnd;
      }
      if (constructorName == 'versionDirective') {
        return TokenType.versionDirective;
      }
      if (constructorName == 'tagDirective') {
        return TokenType.tagDirective;
      }
      if (constructorName == 'documentStart') {
        return TokenType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return TokenType.documentEnd;
      }
      if (constructorName == 'blockSequenceStart') {
        return TokenType.blockSequenceStart;
      }
      if (constructorName == 'blockMappingStart') {
        return TokenType.blockMappingStart;
      }
      if (constructorName == 'blockEnd') {
        return TokenType.blockEnd;
      }
      if (constructorName == 'flowSequenceStart') {
        return TokenType.flowSequenceStart;
      }
      if (constructorName == 'flowSequenceEnd') {
        return TokenType.flowSequenceEnd;
      }
      if (constructorName == 'flowMappingStart') {
        return TokenType.flowMappingStart;
      }
      if (constructorName == 'flowMappingEnd') {
        return TokenType.flowMappingEnd;
      }
      if (constructorName == 'blockEntry') {
        return TokenType.blockEntry;
      }
      if (constructorName == 'flowEntry') {
        return TokenType.flowEntry;
      }
      if (constructorName == 'key') {
        return TokenType.key;
      }
      if (constructorName == 'value') {
        return TokenType.value;
      }
      if (constructorName == 'alias') {
        return TokenType.alias;
      }
      if (constructorName == 'anchor') {
        return TokenType.anchor;
      }
      if (constructorName == 'tag') {
        return TokenType.tag;
      }
      if (constructorName == 'scalar') {
        return TokenType.scalar;
      }
    }
    return null;
  }
}
// ignore_for_file: implementation_imports, unused_import

import 'package:flutter_runtime/flutter_runtime.dart';
import 'package:darty_json_safe/darty_json_safe.dart';
import 'package:yaml/src/utils.dart';
import 'package:yaml/src/charcodes.dart';
import 'package:yaml/yaml.dart';
import 'package:yaml/src/equality.dart';
import 'package:yaml/src/yaml_node.dart';
import 'package:yaml/src/event.dart';
import 'package:yaml/src/token.dart';

class $GlobalRuntime$ extends FlutterRuntime<dynamic> {
  $GlobalRuntime$(super.runtime);

  dynamic call(String methodName, [Map args = const {}]) {
    if (methodName == 'loadYaml')
      return loadYaml(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlNode')
      return loadYamlNode(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlDocument')
      return loadYamlDocument(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
        recover: args['recover'] ?? false,
        errorListener: args['errorListener'],
      );
    if (methodName == 'loadYamlStream')
      return loadYamlStream(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'loadYamlDocuments')
      return loadYamlDocuments(
        args['yaml'],
        sourceUrl: args['sourceUrl'],
      );
    if (methodName == 'warn')
      return warn(
        args['message'],
        args['span'],
      );
    if (methodName == 'deepEqualsMap') return deepEqualsMap();
    if (methodName == 'deepEquals')
      return deepEquals(
        args['obj1'],
        args['obj2'],
      );
    if (methodName == 'deepHashCode')
      return deepHashCode(
        args['obj'],
      );
    if (methodName == 'setSpan')
      return setSpan(
        args['node'],
        args['span'],
      );
  }

  @override
  getField(String fieldName) {
    if (fieldName == 'yamlWarningCallback') return yamlWarningCallback;
    if (fieldName == '\$plus') return $plus;
    if (fieldName == '\$minus') return $minus;
    if (fieldName == '\$dot') return $dot;
    if (fieldName == '\$0') return $0;
    if (fieldName == '\$9') return $9;
    if (fieldName == '\$F') return $F;
    if (fieldName == '\$N') return $N;
    if (fieldName == '\$T') return $T;
    if (fieldName == '\$f') return $f;
    if (fieldName == '\$n') return $n;
    if (fieldName == '\$o') return $o;
    if (fieldName == '\$t') return $t;
    if (fieldName == '\$x') return $x;
    if (fieldName == '\$tilde') return $tilde;
  }

  @override
  void setField(String fieldName, value) {
    if (fieldName == "yamlWarningCallback") yamlWarningCallback = value;
  }

  dynamic getEnumValue(String enumName, String constructorName) {
    if (enumName == "EventType") {
      if (constructorName == 'streamStart') {
        return EventType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return EventType.streamEnd;
      }
      if (constructorName == 'documentStart') {
        return EventType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return EventType.documentEnd;
      }
      if (constructorName == 'alias') {
        return EventType.alias;
      }
      if (constructorName == 'scalar') {
        return EventType.scalar;
      }
      if (constructorName == 'sequenceStart') {
        return EventType.sequenceStart;
      }
      if (constructorName == 'sequenceEnd') {
        return EventType.sequenceEnd;
      }
      if (constructorName == 'mappingStart') {
        return EventType.mappingStart;
      }
      if (constructorName == 'mappingEnd') {
        return EventType.mappingEnd;
      }
    }
    if (enumName == "TokenType") {
      if (constructorName == 'streamStart') {
        return TokenType.streamStart;
      }
      if (constructorName == 'streamEnd') {
        return TokenType.streamEnd;
      }
      if (constructorName == 'versionDirective') {
        return TokenType.versionDirective;
      }
      if (constructorName == 'tagDirective') {
        return TokenType.tagDirective;
      }
      if (constructorName == 'documentStart') {
        return TokenType.documentStart;
      }
      if (constructorName == 'documentEnd') {
        return TokenType.documentEnd;
      }
      if (constructorName == 'blockSequenceStart') {
        return TokenType.blockSequenceStart;
      }
      if (constructorName == 'blockMappingStart') {
        return TokenType.blockMappingStart;
      }
      if (constructorName == 'blockEnd') {
        return TokenType.blockEnd;
      }
      if (constructorName == 'flowSequenceStart') {
        return TokenType.flowSequenceStart;
      }
      if (constructorName == 'flowSequenceEnd') {
        return TokenType.flowSequenceEnd;
      }
      if (constructorName == 'flowMappingStart') {
        return TokenType.flowMappingStart;
      }
      if (constructorName == 'flowMappingEnd') {
        return TokenType.flowMappingEnd;
      }
      if (constructorName == 'blockEntry') {
        return TokenType.blockEntry;
      }
      if (constructorName == 'flowEntry') {
        return TokenType.flowEntry;
      }
      if (constructorName == 'key') {
        return TokenType.key;
      }
      if (constructorName == 'value') {
        return TokenType.value;
      }
      if (constructorName == 'alias') {
        return TokenType.alias;
      }
      if (constructorName == 'anchor') {
        return TokenType.anchor;
      }
      if (constructorName == 'tag') {
        return TokenType.tag;
      }
      if (constructorName == 'scalar') {
        return TokenType.scalar;
      }
    }
    return null;
  }
}

备注

目前生成运行时的能力还很弱，比如后续将生成对象整理成注册表。还有其他类型的生成支持，还有将代码转换为可以动态运行的 JSON 文件来运行，包括后续解析运行库来支持闭包，if/for 等。

我非常希望有感兴趣的一起加入这个社区，让 Flutter 动态化的实现方案更多选择，让接入和侵入更低。

© 版权声明
文章版权归作者所有，未经允许请勿转载，侵权请联系 admin@trc20.tw 删除。
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