VContainer-optimization/codegen | 优化——预生成 IL 代码（已弃用）

合集 - VContainer 中文文档(33)

1.VContainer 介绍02-172.VContainer-about/what-is-vcontainer | 概述——VContainer 是什么？02-173.VContainer-about/what-is-di | 概述——DI 是什么？02-174.VContainer-getting-started/installation | 入门——安装02-175.VContainer-getting-started/hello-world | 入门——Hello World02-176.VContainer-resolving/constructor-injection | 解析——构造函数注入02-177.VContainer-resolving/method-injection | 解析——方法注入02-178.VContainer-resolving/property-field-injection | 解析——属性/字段注入02-179.VContainer-resolving/gameobject-injection | 解析——注入到 MonoBehaviours 中02-1710.VContainer-resolving/container-api | 解析——容器 API02-1711.VContainer-registering/register-type | 注册——注册纯 C# 类型02-1712.VContainer-registering/register-using-delegate | 注册——注册使用委托02-1713.VContainer-registering/register-factory | 注册——注册工厂02-1714.VContainer-registering/register-monobehaviour | 注册——注册 MonoBehaviour02-1715.VContainer-registering/register-scriptable-object | 注册——注册 ScriptableObject02-1716.VContainer-registering/register-collection | 注册——注册集合02-1717.VContainer-registering/register-callbacks | 注册——注册回调02-1718.VContainer-integrations/entrypoint | 集成——纯 C# 入口点02-1719.VContainer-integrations/unitask | 集成——Unitask02-1820.VContainer-integrations/unirx | 集成——UniRx02-1821.VContainer-integrations/messagepipe | 集成——MessagePipe02-1822.VContainer-integrations/ecs | 集成——ECS (beta)02-1823.VContainer-scoping/lifetime-overview | 作用域——生命周期管理总览02-1824.VContainer-scoping/generate-child-via-scene | 作用域——通过场景或 prefab 生成子作用域02-1825.VContainer-scoping/generate-child-with-code-first | 作用域——通过代码优先生成子作用域02-1826.VContainer-scoping/project-root-lifetimescope | 作用域——项目根作用域 LifetimeScope02-1827.VContainer-diagnostics/diagnostics-window | 诊断——VContainer 诊断窗口02-1828.VContainer-optimization/source-generator | 优化——源码生成器02-1829.**VContainer-optimization/async-container-build | 优化——异步容器构建02-1830.VContainer-optimization/parallel-container-build | 优化——并行容器构建02-18

31.VContainer-optimization/codegen | 优化——预生成 IL 代码（已弃用）02-18

32.VContainer-comparing/comparing-to-zenject | 对比 Zenject02-1833.MessagePipe 中文文档02-20

收起

:::danger
已弃用。请改用 Source Generator 源码生成器。
:::

:::caution
需 Unity 2019.3 或更高版本。
:::

VContainer 通过编译时生成 IL 代码提升性能。
运行时无反射开销，速度提升 3-6 倍。
支持 IL2CP。

VContainer 自动生成的代码示例（作为 IL）：

class ClassA
{
    private sealed class __GeneratedInjector : IInjector
    {
        public object CreateInstance(IObjectResolver resolver, IReadOnlyList<IInjectParameter> parameters)
        {
            I6 fromConstructor = resolver.ResolveOrParameter<I6>("fromConstructor1", parameters);
            I7 fromConstructor2 = resolver.ResolveOrParameter<I7>("fromConstructor2", parameters);
            return new ClassA(fromConstructor, fromConstructor2);
        }

        public void Inject(object instance, IObjectResolver resolver, IReadOnlyList<IInjectParameter> parameters)
        {
            ClassA clasA = (ClassA)instance;
            I3 service = resolver.ResolveOrParameter<I3>("service3", parameters);
            I4 service2 = resolver.ResolveOrParameter<I4>("service4", parameters);
            allInjectionFeatureService.MethodInjectable1(service, service2);
            I5 service3 = resolver.ResolveOrParameter<I5>("service5", parameters);
            I6 service4 = resolver.ResolveOrParameter<I6>("service6", parameters);
            classA.MethodInjectable2(service3, service4);
            classA.PrivatePropertyInjectable = resolver.Resolve<I2>();
            classA.PublicPropertyInjectable = resolver.Resolve<I3>();
            classA.privateFieldInjectable = resolver.Resolve<I4>();
            classA.PublicFieldInjectable = resolver.Resolve<I5>();
        }
   }

启用代码生成

1. 添加 VContainer.EnableCodeGen asmdef 引用

项目中如果有 asmdef 引用了以下两个 asmdef，它们将成为 IL 编织的目标。

• VContainer
• VContainer.EnableCodeGen

2. 构建程序集

下次编译指定的程序集时，VContainer 会对编译后的 dll 进行修改。

成功后将会记录如下形式日志：

VContainer code generation optimization for MyGame.dll 24 types (40.0355ms)

:::note
Unity 2020.2 及更高版本中，ILPostProcessor 无法再输出日志。
作为临时措施，上述日志会以警告形式显示，但未来可能会移除。
:::