private Expression CreateInitializationBody(MethodBodyCreationContext ctx, InstanceInitialization initialization)
{
var replacements = new Dictionary <Expression, Expression> {
{ initialization.Semantics, ctx.Parameters[0] }
};
var initializations = initialization.Expressions.Select(e => e.Replace(replacements));
return(Expression.Block(typeof(void), initializations));
}
private Expression GetMethodBody(
MutableType declaringType,
MethodAttributes attributes,
Func <MethodBodyCreationContext, Expression> bodyProvider,
MethodSignatureItems signatureItems,
MethodInfo baseMethod)
{
var parameterExpressions = signatureItems.ParameterDeclarations.Select(pd => pd.Expression);
var isStatic = attributes.IsSet(MethodAttributes.Static);
var context = new MethodBodyCreationContext(
declaringType, isStatic, parameterExpressions, signatureItems.GenericParameters.Cast <Type>(), signatureItems.ReturnType, baseMethod);
var body = bodyProvider == null ? null : BodyProviderUtility.GetTypedBody(signatureItems.ReturnType, bodyProvider, context);
return(body);
}
private Expression ImplementMixinInitalizationMethod(MethodBodyCreationContext ctx, List <Type> mixinTypes)
{
// if (!__extensionsInitialized) {
// __extensionsInitialized = true;
// <set first call proxy>;
// if (isDeserialization)
// <check deserialzed mixin instances>;
// else
// <create mixin instances>;
// <initialize mixins>(isDeserialization);
// }
return(Expression.IfThen(
Expression.Not(_extensionsInitializedField),
Expression.Block(
Expression.Assign(_extensionsInitializedField, Expression.Constant(true)),
ImplementSettingFirstNextCallProxy(ctx.This),
Expression.IfThenElse(
ctx.Parameters[0],
ImplementCheckingDeserializedMixinInstances(),
ImplementCreatingMixinInstances()),
ImplementInitializingMixins(ctx.This, mixinTypes, ctx.Parameters[0]))));
}
public void GetOrCreateOverride_BaseMethod_ImplicitOverride_Generic()
{
var baseDefinition = typeof(DomainType).GetMethod("GenericMethod");
var inputMethod = baseDefinition;
var baseMethod = baseDefinition;
_relatedMethodFinderMock
.Setup(mock => mock.GetOverride(baseDefinition, _mutableType.AddedMethods)).Returns((MutableMethodInfo)null).Verifiable();
_relatedMethodFinderMock
.Setup(mock => mock.GetMostDerivedOverride(baseDefinition, _mutableType.BaseType)).Returns(baseMethod).Verifiable();
_relatedMethodFinderMock
.Setup(
mock => mock.IsShadowed(
baseDefinition,
It.Is <IEnumerable <MethodInfo> > (shadowingCandidates => shadowingCandidates.IsEquivalent(_mutableType.GetAllMethods()))))
.Returns(false)
.Verifiable();
var fakeResult = CreateFakeGenericMethod();
_methodFactoryMock
.Setup(
mock =>
mock.CreateMethod(
_mutableType,
"GenericMethod",
MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.ReuseSlot | MethodAttributes.HideBySig,
It.IsAny <IEnumerable <GenericParameterDeclaration> >(),
It.IsAny <Func <GenericParameterContext, Type> >(),
It.IsAny <Func <GenericParameterContext, IEnumerable <ParameterDeclaration> > >(),
It.IsAny <Func <MethodBodyCreationContext, Expression> >()))
.Returns(fakeResult)
.Callback(
(
MutableType declaringType,
string name,
MethodAttributes attributes,
IEnumerable <GenericParameterDeclaration> genericParameters,
Func <GenericParameterContext, Type> returnTypeProvider,
Func <GenericParameterContext, IEnumerable <ParameterDeclaration> > parameterProvider,
Func <MethodBodyCreationContext, Expression> bodyProvider) =>
{
var fakeGenericParameter = typeof(TypeThatCompliesWithConstraints);
var genericParameterContext = new GenericParameterContext(new[] { fakeGenericParameter });
var returnType = returnTypeProvider(genericParameterContext);
var parameters = parameterProvider(genericParameterContext).ToList();
var genericParameter = genericParameters.Single();
Assert.That(genericParameter.Name, Is.EqualTo("TPar"));
Assert.That(genericParameter.Attributes, Is.EqualTo(GenericParameterAttributes.DefaultConstructorConstraint));
Assert.That(
genericParameter.ConstraintProvider(genericParameterContext),
Is.EqualTo(new[] { typeof(DomainType), typeof(IDisposable) }));
Assert.That(returnType, Is.SameAs(fakeGenericParameter));
ParameterDeclarationTest.CheckParameter(parameters[0], typeof(int), "arg1", ParameterAttributes.None);
ParameterDeclarationTest.CheckParameter(parameters[1], fakeGenericParameter, "arg2", ParameterAttributes.None);
var parameterExpressions = parameters.Select(p => p.Expression).ToList();
var bodyContext = new MethodBodyCreationContext(
_mutableType,
false,
parameterExpressions,
new[] { fakeGenericParameter },
returnType,
baseMethod);
var body = bodyProvider(bodyContext);
var expectedBody = Expression.Call(
bodyContext.This,
baseMethod.MakeTypePipeGenericMethod(fakeGenericParameter),
parameterExpressions);
ExpressionTreeComparer.CheckAreEqualTrees(expectedBody, body);
})
.Verifiable();
var result = _factory.GetOrCreateOverride(_mutableType, inputMethod, out _isNewlyCreated);
_relatedMethodFinderMock.Verify();
_methodFactoryMock.Verify();
Assert.That(result, Is.SameAs(fakeResult));
Assert.That(_isNewlyCreated, Is.True);
}
public void GetOrCreateOverride_BaseMethod_ImplicitOverride_Generic()
{
var baseDefinition = typeof(DomainType).GetMethod("GenericMethod");
var inputMethod = baseDefinition;
var baseMethod = baseDefinition;
_relatedMethodFinderMock.Expect(mock => mock.GetOverride(baseDefinition, _mutableType.AddedMethods)).Return(null);
_relatedMethodFinderMock.Expect(mock => mock.GetMostDerivedOverride(baseDefinition, _mutableType.BaseType)).Return(baseMethod);
_relatedMethodFinderMock
.Expect(mock => mock.IsShadowed(Arg.Is(baseDefinition), Arg <IEnumerable <MethodInfo> > .List.Equivalent(_mutableType.GetAllMethods())))
.Return(false);
var fakeResult = CreateFakeGenericMethod();
_methodFactoryMock
.Expect(
mock =>
mock.CreateMethod(
Arg.Is(_mutableType),
Arg.Is("GenericMethod"),
Arg.Is(MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.ReuseSlot | MethodAttributes.HideBySig),
Arg <IEnumerable <GenericParameterDeclaration> > .Is.Anything,
Arg <Func <GenericParameterContext, Type> > .Is.Anything,
Arg <Func <GenericParameterContext, IEnumerable <ParameterDeclaration> > > .Is.Anything,
Arg <Func <MethodBodyCreationContext, Expression> > .Is.Anything))
.Return(fakeResult)
.WhenCalled(
mi =>
{
var fakeGenericParameter = typeof(TypeThatCompliesWithConstraints);
var genericParameterContext = new GenericParameterContext(new[] { fakeGenericParameter });
var genericParameters = (IEnumerable <GenericParameterDeclaration>)mi.Arguments[3];
var returnType = ((Func <GenericParameterContext, Type>)mi.Arguments[4])(genericParameterContext);
var parameters = ((Func <GenericParameterContext, IEnumerable <ParameterDeclaration> >)mi.Arguments[5])(genericParameterContext).ToList();
var genericParameter = genericParameters.Single();
Assert.That(genericParameter.Name, Is.EqualTo("TPar"));
Assert.That(genericParameter.Attributes, Is.EqualTo(GenericParameterAttributes.DefaultConstructorConstraint));
Assert.That(genericParameter.ConstraintProvider(genericParameterContext), Is.EqualTo(new[] { typeof(DomainType), typeof(IDisposable) }));
Assert.That(returnType, Is.SameAs(fakeGenericParameter));
ParameterDeclarationTest.CheckParameter(parameters[0], typeof(int), "arg1", ParameterAttributes.None);
ParameterDeclarationTest.CheckParameter(parameters[1], fakeGenericParameter, "arg2", ParameterAttributes.None);
var parameterExpressions = parameters.Select(p => p.Expression).ToList();
var bodyContext = new MethodBodyCreationContext(
_mutableType, false, parameterExpressions, new[] { fakeGenericParameter }, returnType, baseMethod);
var body = ((Func <MethodBodyCreationContext, Expression>)mi.Arguments[6])(bodyContext);
var expectedBody = Expression.Call(
bodyContext.This, baseMethod.MakeTypePipeGenericMethod(fakeGenericParameter), parameterExpressions.Cast <Expression>());
ExpressionTreeComparer.CheckAreEqualTrees(expectedBody, body);
});
var result = _factory.GetOrCreateOverride(_mutableType, inputMethod, out _isNewlyCreated);
_relatedMethodFinderMock.VerifyAllExpectations();
_methodFactoryMock.VerifyAllExpectations();
Assert.That(result, Is.SameAs(fakeResult));
Assert.That(_isNewlyCreated, Is.True);
}