Aspect Injector 文档——它如何工作

AspectInjector is a compile-time AOP framework which means that all required work is done at compile time. For example, before compilation your code looks like:

AspectInjector 是一个编译时 AOP 框架，这意味着所有必需的工作都是在编译时完成的。例如，在编译之前，您的代码看起来像:

[Aspect(Scope.Global)]
[Injection(typeof(Log))]
class Log : Attribute
{
    [Advice(Kind.Before, Targets = Target.Method)]
    public void OnEntry([Argument(Source.Name)] string name)
    {
        Console.WriteLine($"Entering method {name}");
    }
}

class TestClass
{
    [Log]
    public void Do()
    {
        Console.WriteLine($"Done");
    }
}

Then when you hit F5, we pick up from there and change your assembly a bit, so it actually works like this:

然后当你按F5时，我们从那里开始改变你的程序集，所以它实际上是这样工作的:

[Aspect(Scope.Global)]
[Injection(typeof(Log))]
class Log : Attribute
{
    public static readonly Log __a$_instance;

    [Advice(Kind.Before, Targets = Target.Method)]
    public void OnEntry([Argument(Source.Name)] string name)
    {
        Console.WriteLine($"Entering method {name}");
    }

    static Log()
    {
        __a$_instance = new Log();
    }
}

internal class TestClass
{
    [Log]
    public void Do()
    {
        Log.__a$_instance.OnEntry("Do");
        Console.WriteLine("Done");
    }
}

Thus, there is no performance hit as often experienced with other runtime AOP frameworks.

因此，不会像其他运行时 AOP 框架那样经常出现性能问题。