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station_obscurum_unity/Assets/FishNet/CodeGenerating/Helpers/Extension/ModuleDefinitionExtensions.cs

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2023-05-31 17:32:21 +02:00
using FishNet.CodeGenerating.ILCore;
using MonoFN.Cecil;
using System;
using System.Linq.Expressions;
using System.Reflection;
namespace FishNet.CodeGenerating.Helping.Extension
{
public static class ModuleDefinitionExtensions
{
/// <summary>
/// Gets a class within a module.
/// </summary>
/// <param name="moduleDef"></param>
/// <returns></returns>
public static TypeDefinition GetClass(this ModuleDefinition moduleDef, string className, string namespaceName = "")
{
if (namespaceName.Length == 0)
namespaceName = FishNetILPP.RUNTIME_ASSEMBLY_NAME;
return moduleDef.GetType(namespaceName, className);
}
public static MethodReference ImportReference(this ModuleDefinition moduleDef, Expression<Action> expression)
{
return ImportReference(moduleDef, (LambdaExpression)expression);
}
public static MethodReference ImportReference<T>(this ModuleDefinition module, Expression<Action<T>> expression)
{
return ImportReference(module, (LambdaExpression)expression);
}
public static MethodReference ImportReference(this ModuleDefinition module, LambdaExpression expression)
{
if (expression.Body is MethodCallExpression outermostExpression)
{
MethodInfo methodInfo = outermostExpression.Method;
return module.ImportReference(methodInfo);
}
if (expression.Body is NewExpression newExpression)
{
ConstructorInfo methodInfo = newExpression.Constructor;
// constructor is null when creating an ArraySegment<object>
methodInfo = methodInfo ?? newExpression.Type.GetConstructors()[0];
return module.ImportReference(methodInfo);
}
if (expression.Body is MemberExpression memberExpression)
{
var property = memberExpression.Member as PropertyInfo;
return module.ImportReference(property.GetMethod);
}
throw new ArgumentException($"Invalid Expression {expression.Body.GetType()}");
}
}
}