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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using Mono.Linker.Tests.Cases.Expectations.Assertions;
using Mono.Linker.Tests.Cases.Expectations.Helpers;
using Mono.Linker.Tests.Cases.Expectations.Metadata;
namespace Mono.Linker.Tests.Cases.DataFlow
{
// Note: this test's goal is to validate that the product correctly reports unrecognized patterns
// - so the main validation is done by the ExpectedWarning attributes.
[SkipKeptItemsValidation]
[ExpectedNoWarnings]
public class MethodReturnParameterDataFlow
{
public static void Main ()
{
var instance = new MethodReturnParameterDataFlow ();
// Validation that assigning value to the return value is verified
NoRequirements ();
instance.ReturnPublicParameterlessConstructor (typeof (TestType), typeof (TestType), typeof (TestType));
instance.ReturnPublicParameterlessConstructorFromUnknownType (null);
instance.ReturnPublicParameterlessConstructorFromConstant ();
instance.ReturnPublicParameterlessConstructorFromNull ();
instance.ReturnPublicConstructorsFailure (null);
instance.ReturnNonPublicConstructorsFailure (null);
instance.ReturnUnknownValue ();
// Validation that value comming from return value of a method is correctly propagated
instance.PropagateReturnPublicParameterlessConstructor ();
instance.PropagateReturnPublicParameterlessConstructorFromConstant ();
instance.PropagateReturnToReturn (0);
instance.ReturnWithRequirementsAlwaysThrows ();
UnsupportedReturnType ();
}
static Type NoRequirements ()
{
return typeof (TestType);
}
[ExpectedWarning ("IL2068", nameof (ReturnPublicParameterlessConstructor))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type ReturnPublicParameterlessConstructor (
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type publicParameterlessConstructorType,
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]
Type publicConstructorsType,
[DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.NonPublicConstructors)]
Type nonPublicConstructorsType)
{
switch (GetHashCode ()) {
case 1:
return publicParameterlessConstructorType;
case 2:
return publicConstructorsType;
case 3:
return nonPublicConstructorsType;
case 4:
return typeof (TestType);
default:
return null;
}
}
[ExpectedWarning ("IL2068", nameof (ReturnPublicParameterlessConstructorFromUnknownType))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type ReturnPublicParameterlessConstructorFromUnknownType (Type unknownType)
{
return unknownType;
}
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type ReturnPublicParameterlessConstructorFromConstant ()
{
return typeof (TestType);
}
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type ReturnPublicParameterlessConstructorFromNull ()
{
return null;
}
Type ReturnTypeWithNoRequirements ()
{
return null;
}
// Validate error message when insufficiently annotated value is returned from a method
[ExpectedWarning ("IL2068",
"publicParameterlessConstructorType",
"MethodReturnParameterDataFlow.ReturnPublicConstructorsFailure",
"MethodReturnParameterDataFlow.ReturnPublicConstructorsFailure")]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicConstructors)]
Type ReturnPublicConstructorsFailure (
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type publicParameterlessConstructorType)
{
return publicParameterlessConstructorType;
}
[ExpectedWarning ("IL2068", nameof (ReturnNonPublicConstructorsFailure))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.NonPublicConstructors)]
Type ReturnNonPublicConstructorsFailure (
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]
Type publicConstructorsType)
{
return publicConstructorsType;
}
[ExpectedWarning ("IL2063",
nameof (MethodReturnParameterDataFlow) + "." + nameof (ReturnUnknownValue) + "()", ProducedBy = ProducedBy.Trimmer)]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicConstructors)]
Type ReturnUnknownValue ()
{
var array = new object[1];
array[0] = this.GetType ();
MakeArrayValuesUnknown (array);
return (Type) array[0];
static void MakeArrayValuesUnknown (object[] array)
{
}
}
[ExpectedWarning ("IL2072",
nameof (DataFlowTypeExtensions) + "." + nameof (DataFlowTypeExtensions.RequiresPublicConstructors) + "(Type)",
nameof (MethodReturnParameterDataFlow) + "." + nameof (ReturnPublicParameterlessConstructor) + "(Type, Type, Type)")]
[ExpectedWarning ("IL2072",
nameof (DataFlowTypeExtensions) + "." + nameof (DataFlowTypeExtensions.RequiresNonPublicConstructors) + "(Type)",
nameof (MethodReturnParameterDataFlow) + "." + nameof (ReturnPublicParameterlessConstructor) + "(Type, Type, Type)")]
void PropagateReturnPublicParameterlessConstructor ()
{
Type t = ReturnPublicParameterlessConstructor (typeof (TestType), typeof (TestType), typeof (TestType));
t.RequiresPublicParameterlessConstructor ();
t.RequiresPublicConstructors ();
t.RequiresNonPublicConstructors ();
t.RequiresNone ();
}
[ExpectedWarning ("IL2072",
nameof (DataFlowTypeExtensions) + "." + nameof (DataFlowTypeExtensions.RequiresPublicConstructors) + "(Type)",
nameof (MethodReturnParameterDataFlow) + "." + nameof (ReturnPublicParameterlessConstructorFromConstant) + "()")]
[ExpectedWarning ("IL2072",
nameof (DataFlowTypeExtensions) + "." + nameof (DataFlowTypeExtensions.RequiresNonPublicConstructors) + "(Type)",
nameof (MethodReturnParameterDataFlow) + "." + nameof (ReturnPublicParameterlessConstructorFromConstant) + "()")]
void PropagateReturnPublicParameterlessConstructorFromConstant ()
{
Type t = ReturnPublicParameterlessConstructorFromConstant ();
t.RequiresPublicParameterlessConstructor ();
t.RequiresPublicConstructors ();
t.RequiresNonPublicConstructors ();
t.RequiresNone ();
}
[ExpectedWarning ("IL2073",
nameof (ReturnTypeWithNoRequirements),
nameof (PropagateReturnToReturn))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
Type PropagateReturnToReturn (int n)
{
switch (n) {
case 0:
return ReturnPublicParameterlessConstructorFromConstant ();
case 1:
return ReturnTypeWithNoRequirements ();
}
return null;
}
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicMethods)]
Type ReturnWithRequirementsAlwaysThrows ()
{
throw new NotImplementedException ();
}
[ExpectedWarning ("IL2106", nameof (UnsupportedReturnType))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicMethods)]
static object UnsupportedReturnType () => null;
[ExpectedWarning ("IL2106", nameof (UnsupportedReturnTypeAndParameter))]
[ExpectedWarning ("IL2098", nameof (UnsupportedReturnTypeAndParameter))]
[return: DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicMethods)]
static object UnsupportedReturnTypeAndParameter ([DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicMethods)] object param) => null;
class TestType
{
public TestType () { }
}
}
}
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