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