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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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#nullable enable |
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using System; |
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using System.Collections.Generic; |
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using System.Diagnostics; |
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using System.Linq.Expressions; |
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using System.Reflection; |
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namespace LINGYUN.Abp.EventBus.CAP.Internal |
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namespace LINGYUN.Abp.EventBus.CAP.Internal; |
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internal class ObjectMethodExecutor |
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{ |
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internal class ObjectMethodExecutor |
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{ |
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// ReSharper disable once InconsistentNaming
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private static readonly ConstructorInfo _objectMethodExecutorAwaitableConstructor = |
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typeof(ObjectMethodExecutorAwaitable).GetConstructor(new[] |
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{ |
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@ -20,18 +22,15 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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typeof(Func<object, object>), // getResultMethod
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typeof(Action<object, Action>), // onCompletedMethod
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typeof(Action<object, Action>) // unsafeOnCompletedMethod
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}); |
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})!; |
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private readonly MethodExecutor _executor; |
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private readonly MethodExecutorAsync _executorAsync; |
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private readonly object[] _parameterDefaultValues; |
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private readonly MethodExecutor? _executor; |
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private readonly MethodExecutorAsync? _executorAsync; |
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private readonly object?[]? _parameterDefaultValues; |
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private ObjectMethodExecutor(MethodInfo methodInfo, TypeInfo targetTypeInfo, object[] parameterDefaultValues) |
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private ObjectMethodExecutor(MethodInfo methodInfo, TypeInfo targetTypeInfo, object?[]? parameterDefaultValues) |
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{ |
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if (methodInfo == null) |
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{ |
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throw new ArgumentNullException(nameof(methodInfo)); |
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} |
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if (methodInfo == null) throw new ArgumentNullException(nameof(methodInfo)); |
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MethodInfo = methodInfo; |
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MethodParameters = methodInfo.GetParameters(); |
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@ -48,10 +47,7 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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// and await it without the extra heap allocations involved in the _executorAsync code path.
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_executor = GetExecutor(methodInfo, targetTypeInfo); |
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if (IsMethodAsync) |
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{ |
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_executorAsync = GetExecutorAsync(methodInfo, targetTypeInfo, coercedAwaitableInfo); |
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} |
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if (IsMethodAsync) _executorAsync = GetExecutorAsync(methodInfo, targetTypeInfo, coercedAwaitableInfo); |
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_parameterDefaultValues = parameterDefaultValues; |
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} |
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@ -62,7 +58,7 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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public TypeInfo TargetTypeInfo { get; } |
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public Type AsyncResultType { get; } |
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public Type? AsyncResultType { get; } |
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// This field is made internal set because it is set in unit tests.
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public Type MethodReturnType { get; internal set; } |
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@ -75,12 +71,9 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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} |
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public static ObjectMethodExecutor Create(MethodInfo methodInfo, TypeInfo targetTypeInfo, |
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object[] parameterDefaultValues) |
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{ |
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if (parameterDefaultValues == null) |
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object?[] parameterDefaultValues) |
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{ |
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throw new ArgumentNullException(nameof(parameterDefaultValues)); |
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} |
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if (parameterDefaultValues == null) throw new ArgumentNullException(nameof(parameterDefaultValues)); |
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return new ObjectMethodExecutor(methodInfo, targetTypeInfo, parameterDefaultValues); |
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} |
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@ -100,8 +93,9 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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/// <param name="target">The object whose method is to be executed.</param>
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/// <param name="parameters">Parameters to pass to the method.</param>
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/// <returns>The method return value.</returns>
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public object Execute(object target, params object[] parameters) |
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public object? Execute(object target, object?[]? parameters) |
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{ |
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Debug.Assert(_executor != null, "Sync execution is not supported."); |
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return _executor(target, parameters); |
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} |
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@ -124,23 +118,19 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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/// <param name="target">The object whose method is to be executed.</param>
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/// <param name="parameters">Parameters to pass to the method.</param>
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/// <returns>An object that you can "await" to get the method return value.</returns>
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public ObjectMethodExecutorAwaitable ExecuteAsync(object target, params object[] parameters) |
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public ObjectMethodExecutorAwaitable ExecuteAsync(object target, object?[]? parameters) |
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{ |
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Debug.Assert(_executorAsync != null, "Async execution is not supported."); |
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return _executorAsync(target, parameters); |
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} |
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public object GetDefaultValueForParameter(int index) |
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public object? GetDefaultValueForParameter(int index) |
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{ |
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if (_parameterDefaultValues == null) |
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{ |
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throw new InvalidOperationException( |
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$"Cannot call {nameof(GetDefaultValueForParameter)}, because no parameter default values were supplied."); |
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} |
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if (index < 0 || index > MethodParameters.Length - 1) |
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{ |
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throw new ArgumentOutOfRangeException(nameof(index)); |
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} |
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if (index < 0 || index > MethodParameters.Length - 1) throw new ArgumentOutOfRangeException(nameof(index)); |
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return _parameterDefaultValues[index]; |
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} |
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@ -149,11 +139,11 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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{ |
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// Parameters to executor
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var targetParameter = Expression.Parameter(typeof(object), "target"); |
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var parametersParameter = Expression.Parameter(typeof(object[]), "parameters"); |
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var parametersParameter = Expression.Parameter(typeof(object?[]), "parameters"); |
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// Build parameter list
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var parameters = new List<Expression>(); |
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var paramInfos = methodInfo.GetParameters(); |
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var parameters = new List<Expression>(paramInfos.Length); |
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for (var i = 0; i < paramInfos.Length; i++) |
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{ |
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var paramInfo = paramInfos[i]; |
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@ -187,7 +177,7 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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private static MethodExecutor WrapVoidMethod(VoidMethodExecutor executor) |
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{ |
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return delegate (object target, object[] parameters) |
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return delegate (object target, object?[]? parameters) |
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{ |
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executor(target, parameters); |
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return null; |
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@ -204,8 +194,8 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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var parametersParameter = Expression.Parameter(typeof(object[]), "parameters"); |
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// Build parameter list
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var parameters = new List<Expression>(); |
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var paramInfos = methodInfo.GetParameters(); |
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var parameters = new List<Expression>(paramInfos.Length); |
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for (var i = 0; i < paramInfos.Length; i++) |
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{ |
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var paramInfo = paramInfos[i]; |
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@ -250,7 +240,11 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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var getResultParam = Expression.Parameter(typeof(object), "awaiter"); |
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Func<object, object> getResultFunc; |
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if (awaitableInfo.ResultType == typeof(void)) |
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{ |
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// var getResultFunc = (object awaiter) =>
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// {
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// ((CustomAwaiterType)awaiter).GetResult(); // We need to invoke this to surface any exceptions
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// return (object)null;
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// };
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getResultFunc = Expression.Lambda<Func<object, object>>( |
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Expression.Block( |
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Expression.Call( |
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@ -259,9 +253,9 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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Expression.Constant(null) |
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), |
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getResultParam).Compile(); |
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} |
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else |
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{ |
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// var getResultFunc = (object awaiter) =>
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// (object)((CustomAwaiterType)awaiter).GetResult();
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getResultFunc = Expression.Lambda<Func<object, object>>( |
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Expression.Convert( |
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Expression.Call( |
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@ -269,7 +263,6 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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awaitableInfo.AwaiterGetResultMethod), |
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typeof(object)), |
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getResultParam).Compile(); |
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} |
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// var onCompletedFunc = (object awaiter, Action continuation) => {
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// ((CustomAwaiterType)awaiter).OnCompleted(continuation);
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@ -284,7 +277,7 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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onCompletedParam1, |
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onCompletedParam2).Compile(); |
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Action<object, Action> unsafeOnCompletedFunc = null; |
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Action<object, Action>? unsafeOnCompletedFunc = null; |
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if (awaitableInfo.AwaiterUnsafeOnCompletedMethod != null) |
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{ |
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// var unsafeOnCompletedFunc = (object awaiter, Action continuation) => {
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@ -328,10 +321,9 @@ namespace LINGYUN.Abp.EventBus.CAP.Internal |
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return lambda.Compile(); |
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} |
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private delegate ObjectMethodExecutorAwaitable MethodExecutorAsync(object target, params object[] parameters); |
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private delegate ObjectMethodExecutorAwaitable MethodExecutorAsync(object target, object?[]? parameters); |
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private delegate object MethodExecutor(object target, params object[] parameters); |
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private delegate object? MethodExecutor(object target, object?[]? parameters); |
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private delegate void VoidMethodExecutor(object target, object[] parameters); |
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} |
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private delegate void VoidMethodExecutor(object target, object?[]? parameters); |
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} |
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colin
1 year ago