74 lines
3.1 KiB
C#
74 lines
3.1 KiB
C#
// <copyright>
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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namespace System.ServiceModel.Description
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{
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using System.Reflection;
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internal static class TaskOperationDescriptionValidator
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{
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internal static void Validate(OperationDescription operationDescription, bool isForService)
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{
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MethodInfo taskMethod = operationDescription.TaskMethod;
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if (taskMethod != null)
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{
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if (isForService)
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{
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// no other method ([....], async) is allowed to co-exist with a task-based method on the server-side.
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EnsureNoSyncMethod(operationDescription);
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EnsureNoBeginEndMethod(operationDescription);
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}
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else
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{
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// no out/ref parameter is allowed on the client-side.
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EnsureNoOutputParameters(taskMethod);
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}
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EnsureParametersAreSupported(taskMethod);
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}
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}
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private static void EnsureNoSyncMethod(OperationDescription operation)
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{
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if (operation.SyncMethod != null)
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{
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string method1Name = operation.TaskMethod.Name;
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string method2Name = operation.SyncMethod.Name;
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.CannotHaveTwoOperationsWithTheSameName3, method1Name, method2Name, operation.DeclaringContract.ContractType)));
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}
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}
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private static void EnsureNoBeginEndMethod(OperationDescription operation)
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{
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if (operation.BeginMethod != null)
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{
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string method1Name = operation.TaskMethod.Name;
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string method2Name = operation.BeginMethod.Name;
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.CannotHaveTwoOperationsWithTheSameName3, method1Name, method2Name, operation.DeclaringContract.ContractType)));
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}
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}
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private static void EnsureParametersAreSupported(MethodInfo method)
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{
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foreach (ParameterInfo parameter in method.GetParameters())
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{
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Type parameterType = parameter.ParameterType;
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if ((parameterType == ServiceReflector.CancellationTokenType) ||
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(parameterType.IsGenericType && parameterType.GetGenericTypeDefinition() == ServiceReflector.IProgressType))
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR.GetString(SR.TaskMethodParameterNotSupported, parameterType)));
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}
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}
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}
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private static void EnsureNoOutputParameters(MethodInfo method)
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{
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if (ServiceReflector.HasOutputParameters(method, false))
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.TaskMethodMustNotHaveOutParameter)));
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}
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}
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}
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}
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