public void ImportOpenGenericType()
{
// class C<T, U> { void M<X>() {} }
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(SymbolKind.TypeDefinition, 0, "T"));
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(SymbolKind.TypeDefinition, 1, "U"));
var m = new DefaultUnresolvedMethod(c, "M");
m.TypeParameters.Add(new DefaultUnresolvedTypeParameter(SymbolKind.Method, 0, "X"));
c.Members.Add(m);
var resolvedC1 = TypeSystemHelper.CreateCompilationAndResolve(c);
var resolvedM1 = resolvedC1.Methods.Single(method => method.Name == "M");
var resolvedC2 = TypeSystemHelper.CreateCompilationAndResolve(c);
var resolvedM2 = resolvedC2.Methods.Single(method => method.Name == "M");
// the types, methods and type parameters differ in the two compilations:
Assert.AreNotEqual(resolvedC1, resolvedC2);
Assert.AreNotEqual(resolvedM1, resolvedM2);
Assert.AreNotEqual(resolvedC1.TypeParameters[1], resolvedC2.TypeParameters[1]);
Assert.AreNotEqual(resolvedM1.TypeParameters[0], resolvedM2.TypeParameters[0]);
// C<U, X>
var pt1 = new ParameterizedType(resolvedC1, new[] { resolvedC1.TypeParameters[1], resolvedM1.TypeParameters[0] });
var pt2 = (ParameterizedType)resolvedC2.Compilation.Import(pt1);
// importing resulted in C<U, X> in the new compilation:
Assert.AreEqual(resolvedC2, pt2.GetDefinition());
Assert.AreEqual(resolvedC2.TypeParameters[1], pt2.TypeArguments[0]);
Assert.AreEqual(resolvedM2.TypeParameters[0], pt2.TypeArguments[1]);
}
public void GetGenericNestedTypeOfBoundGenericClass()
{
// class A<X> { class B<Y> { } }
DefaultUnresolvedTypeDefinition a = new DefaultUnresolvedTypeDefinition(string.Empty, "A");
a.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 0, "X"));
DefaultUnresolvedTypeDefinition b = new DefaultUnresolvedTypeDefinition(a, "B");
b.TypeParameters.Add(a.TypeParameters[0]);
b.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 1, "Y"));
a.NestedTypes.Add(b);
var compilation = TypeSystemHelper.CreateCompilation(a, b);
ITypeDefinition resolvedA = compilation.MainAssembly.GetTypeDefinition(a.FullTypeName);
ITypeDefinition resolvedB = compilation.MainAssembly.GetTypeDefinition(b.FullTypeName);
// A<> gets self-parameterized, B<> stays unbound
Assert.AreEqual("A`1+B`1[[`0],[]]", resolvedA.GetNestedTypes().Single().ReflectionName);
ParameterizedType pt = new ParameterizedType(resolvedA, new [] { compilation.FindType(KnownTypeCode.String) });
Assert.AreEqual("A`1+B`1[[System.String],[]]", pt.GetNestedTypes().Single().ReflectionName);
}
public void MultipleInheritanceTest()
{
DefaultUnresolvedTypeDefinition b1 = new DefaultUnresolvedTypeDefinition(string.Empty, "B1");
b1.Kind = TypeKind.Interface;
b1.Members.Add(new DefaultUnresolvedProperty(b1, "P1"));
DefaultUnresolvedTypeDefinition b2 = new DefaultUnresolvedTypeDefinition(string.Empty, "B2");
b2.Kind = TypeKind.Interface;
b2.Members.Add(new DefaultUnresolvedProperty(b2, "P2"));
DefaultUnresolvedTypeDefinition c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.Kind = TypeKind.Interface;
c.BaseTypes.Add(b1);
c.BaseTypes.Add(b2);
var compilation = TypeSystemHelper.CreateCompilation(b1, b2, c);
ITypeDefinition resolvedC = compilation.MainAssembly.GetTypeDefinition(c.FullTypeName);
Assert.AreEqual(new[] { "P1", "P2" }, resolvedC.GetProperties().Select(p => p.Name).ToArray());
// Test that there's only one copy of ToString():
Assert.AreEqual(1, resolvedC.GetMethods(m => m.Name == "ToString").Count());
}
public void EmptyClassHasToString()
{
DefaultUnresolvedTypeDefinition c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
var resolvedC = TypeSystemHelper.CreateCompilationAndResolve(c);
Assert.AreEqual("System.Object.ToString", resolvedC.GetMethods(m => m.Name == "ToString").Single().FullName);
}
public void GetNestedTypesOfBoundGenericClass()
{
var compilation = TypeSystemHelper.CreateCompilation();
IType dictionary = compilation.FindType(typeof(Dictionary <string, int>));
IType keyCollection = dictionary.GetNestedTypes().Single(t => t.Name == "KeyCollection");
Assert.AreEqual(compilation.FindType(typeof(Dictionary <string, int> .KeyCollection)), keyCollection);
}
public void GetNestedTypesOfUnboundGenericClass()
{
var compilation = TypeSystemHelper.CreateCompilation();
ITypeDefinition dictionary = compilation.FindType(typeof(Dictionary <,>)).GetDefinition();
IType keyCollection = dictionary.GetNestedTypes().Single(t => t.Name == "KeyCollection");
// the type should be parameterized
Assert.AreEqual("System.Collections.Generic.Dictionary`2+KeyCollection[[`0],[`1]]", keyCollection.ReflectionName);
}
public void ClassDerivingFromItself()
{
// class C : C {}
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.BaseTypes.Add(c);
ITypeDefinition resolvedC = TypeSystemHelper.CreateCompilationAndResolve(c);
Assert.AreEqual(new [] { resolvedC }, resolvedC.GetAllBaseTypes().ToArray());
}
public void ClassDerivingFromParameterizedVersionOfItself()
{
// class C<X> : C<C<X>> {}
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 0, "X"));
c.BaseTypes.Add(new ParameterizedTypeReference(c, new [] { new ParameterizedTypeReference(c, new [] { new TypeParameterReference(EntityType.TypeDefinition, 0) }) }));
compilation = TypeSystemHelper.CreateCompilation(c);
ITypeDefinition resolvedC = Resolve(c);
Assert.AreEqual(new [] { resolvedC }, resolvedC.GetAllBaseTypes().ToArray());
}
public void TwoClassesDerivingFromEachOther()
{
// class C1 : C2 {} class C2 : C1 {}
var c1 = new DefaultUnresolvedTypeDefinition(string.Empty, "C1");
var c2 = new DefaultUnresolvedTypeDefinition(string.Empty, "C2");
c1.BaseTypes.Add(c2);
c2.BaseTypes.Add(c1);
compilation = TypeSystemHelper.CreateCompilation(c1, c2);
ITypeDefinition resolvedC1 = Resolve(c1);
ITypeDefinition resolvedC2 = Resolve(c2);
Assert.AreEqual(new [] { resolvedC2, resolvedC1 }, resolvedC1.GetAllBaseTypes().ToArray());
}
public void StructImplementingIEquatable()
{
// struct S : IEquatable<S> {}
// don't use a Cecil-loaded struct for this test; we're testing the implicit addition of System.ValueType
var s = new DefaultUnresolvedTypeDefinition(string.Empty, "S");
s.Kind = TypeKind.Struct;
s.BaseTypes.Add(new ParameterizedTypeReference(typeof(IEquatable <>).ToTypeReference(), new[] { s }));
compilation = TypeSystemHelper.CreateCompilation(s);
ITypeDefinition resolvedS = Resolve(s);
IType[] expected =
{
resolvedS,
s.BaseTypes[0].Resolve(new SimpleTypeResolveContext(resolvedS)),
compilation.FindType(typeof(object)),
compilation.FindType(typeof(ValueType))
};
Assert.AreEqual(expected,
resolvedS.GetAllBaseTypes().OrderBy(t => t.ReflectionName).ToArray());
}
public void ClassDerivingFromTwoInstanciationsOfIEnumerable()
{
// class C : IEnumerable<int>, IEnumerable<uint> {}
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.BaseTypes.Add(typeof(IEnumerable <int>).ToTypeReference());
c.BaseTypes.Add(typeof(IEnumerable <uint>).ToTypeReference());
compilation = TypeSystemHelper.CreateCompilation(c);
ITypeDefinition resolvedC = Resolve(c);
IType[] expected =
{
resolvedC,
compilation.FindType(typeof(IEnumerable <int>)),
compilation.FindType(typeof(IEnumerable <uint>)),
compilation.FindType(typeof(IEnumerable)),
compilation.FindType(typeof(object))
};
Assert.AreEqual(expected,
resolvedC.GetAllBaseTypes().OrderBy(t => t.ReflectionName).ToArray());
}
public void TypeParameterDerivingFromOtherTypeParameterInheritsEffectiveBaseClass()
{
// class C<T, U> where T : List<string> where U : T
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 0, "T")
{
Constraints = { typeof(List <string>).ToTypeReference() }
});
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 1, "U")
{
Constraints = { new TypeParameterReference(EntityType.TypeDefinition, 0) }
});
ITypeDefinition resolvedC = TypeSystemHelper.CreateCompilation(c).MainAssembly.GetTypeDefinition(c);
Assert.AreEqual(true, resolvedC.TypeParameters[0].IsReferenceType);
Assert.AreEqual(true, resolvedC.TypeParameters[1].IsReferenceType);
Assert.AreEqual("System.Collections.Generic.List`1[[System.String]]", resolvedC.TypeParameters[0].EffectiveBaseClass.ReflectionName);
Assert.AreEqual("System.Collections.Generic.List`1[[System.String]]", resolvedC.TypeParameters[1].EffectiveBaseClass.ReflectionName);
}
public void TypeParameterDerivingFromOtherTypeParameterDoesNotInheritReferenceConstraint()
{
// class C<T, U> where T : class where U : T
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 0, "T")
{
HasReferenceTypeConstraint = true
});
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(EntityType.TypeDefinition, 1, "U")
{
Constraints = { new TypeParameterReference(EntityType.TypeDefinition, 0) }
});
ITypeDefinition resolvedC = TypeSystemHelper.CreateCompilation(c).MainAssembly.GetTypeDefinition(c);
// At runtime, we might have T=System.ValueType and U=int, so C# can't inherit the 'class' constraint
// from one type parameter to another.
Assert.AreEqual(true, resolvedC.TypeParameters[0].IsReferenceType);
Assert.IsNull(resolvedC.TypeParameters[1].IsReferenceType);
}
public void ValueTypeParameterDerivingFromReferenceTypeParameter()
{
// class C<T, U> where T : class where U : struct, T
var c = new DefaultUnresolvedTypeDefinition(string.Empty, "C");
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(SymbolKind.TypeDefinition, 0, "T")
{
HasReferenceTypeConstraint = true
});
c.TypeParameters.Add(new DefaultUnresolvedTypeParameter(SymbolKind.TypeDefinition, 1, "U")
{
HasValueTypeConstraint = true,
Constraints = { new TypeParameterReference(SymbolKind.TypeDefinition, 0) }
});
ITypeDefinition resolvedC = TypeSystemHelper.CreateCompilationAndResolve(c);
// At runtime, we might have T=System.ValueType and U=int, so C# can't inherit the 'class' constraint
// from one type parameter to another.
Assert.AreEqual(true, resolvedC.TypeParameters[0].IsReferenceType);
Assert.AreEqual(false, resolvedC.TypeParameters[1].IsReferenceType);
}
