MonoScript

Unity的cs脚本文件属于MonoScript资源，先来看看MonoScript的类定义

using System;
using UnityEngine;
using UnityEngine.Bindings;

namespace UnityEditor
{
    //
    // 摘要:
    //     Representation of Script assets.
    [NativeClass(null)]
    [NativeType("Editor/Mono/MonoScript.bindings.h")]
    public class MonoScript : TextAsset
    {
        public MonoScript();

        //
        // 摘要:
        //     Returns the MonoScript object containing specified MonoBehaviour.
        //
        // 参数:
        //   behaviour:
        //     The MonoBehaviour whose MonoScript should be returned.
        [FreeFunction]
        public static MonoScript FromMonoBehaviour(MonoBehaviour behaviour);
        //
        // 摘要:
        //     Returns the MonoScript object containing specified ScriptableObject.
        //
        // 参数:
        //   scriptableObject:
        //     The ScriptableObject whose MonoScript should be returned.
        [FreeFunction]
        public static MonoScript FromScriptableObject(ScriptableObject scriptableObject);
        //
        // 摘要:
        //     Returns the System.Type object of the class implemented by this script.
        public Type GetClass();
    }
}

MonoScript.FromMonoBehaviour来通过MonoBehaviour得到脚本MonoScript, MonoScript.text来得到整个类脚本文本
MonoScript.GetClass()这个方法有点特殊，返回Type

• Case 1 : 如果脚本fileName和它定义的类没有一个相同时，返回null。如下面脚本文件名为SomeClass.cs

namespace TestFrame
{
    public class ClassA
    {
    }

    public class ClassB
    {
    }
}

• Case 2 : 如果把上面的ClassB改成和文件名一致，则会返回SomeClass

namespace TestFrame
{
    public class ClassA
    {
    }

    public class SomeClass
    {
    }
}

• Case 3 ：如果类名和文件名一直，但是类是泛型，返回结果也为null。如下面定义在文件SomeGenericClass.cs文件中

namespace TestFrame
{
    public class SomeGenericClass<T>
    {
    }
}