IsSubclassOf() public method

public IsSubclassOf ( Type type ) : bool
type Type
return bool
Ejemplo n.º 1
0
 string GetTypeKind(Type t)
 {
     if (t.IsEnum)
     {
         return("enum");
     }
     if (t.IsClass)
     {
         if (t.IsSubclassOf(type_multicast_delegate))
         {
             return("delegate");
         }
         else
         {
             return("class");
         }
     }
     if (t.IsInterface)
     {
         return("interface");
     }
     if (t.IsValueType)
     {
         return("struct");
     }
     return("class");
 }
Ejemplo n.º 2
0
        internal static bool IsSubclassOf(Type type, Type baseClass)
        {
#if WINRT || COREFX || PROFILE259
            return(type.GetTypeInfo().IsSubclassOf(baseClass));
#else
            return(type.IsSubclassOf(baseClass));
#endif
        }
Ejemplo n.º 3
0
        internal static bool IsSubclassOf(Type type, Type baseClass)
        {
#if WINRT
            return(type.GetTypeInfo().IsSubclassOf(baseClass));
#else
            return(type.IsSubclassOf(baseClass));
#endif
        }
Ejemplo n.º 4
0
        static IMemberInfo[] SubDelegateSpecific(Operand[] args, ITypeMapper typeMapper)
        {
            Type t1 = Operand.GetType(args[0], typeMapper), t2 = Operand.GetType(args[1], typeMapper);

            if (t1 != t2 || t1 == null || !t1.IsSubclassOf(typeMapper.MapType(typeof(Delegate))))               // if the types are not the same, no operator can be valid
            {
                return(_stdNone);
            }

            return(new IMemberInfo[] { new DelegateRemoveOp(t1) });
        }
Ejemplo n.º 5
0
        public void OutlineType()
        {
            bool first;

            OutlineAttributes();
            o.Write(GetTypeVisibility(t));

            if (t.IsClass && !t.IsSubclassOf(type_multicast_delegate))
            {
                if (t.IsSealed)
                {
                    o.Write(t.IsAbstract ? " static" : " sealed");
                }
                else if (t.IsAbstract)
                {
                    o.Write(" abstract");
                }
            }

            o.Write(" ");
            o.Write(GetTypeKind(t));
            o.Write(" ");

            Type [] interfaces = (Type [])Comparer.Sort(TypeGetInterfaces(t, declared_only));
            Type    parent     = t.BaseType;

            if (t.IsSubclassOf(type_multicast_delegate))
            {
                MethodInfo method;

                method = t.GetMethod("Invoke");

                o.Write(FormatType(method.ReturnType));
                o.Write(" ");
                o.Write(GetTypeName(t));
                o.Write(" (");
                OutlineParams(method.GetParameters());
                o.Write(")");

                WriteGenericConstraints(t.GetGenericArguments());

                o.WriteLine(";");
                return;
            }

            o.Write(GetTypeName(t));
            if (((parent != null && parent != type_object && parent != type_value_type) || interfaces.Length != 0) && !t.IsEnum)
            {
                first = true;
                o.Write(" : ");

                if (parent != null && parent != type_object && parent != type_value_type)
                {
                    o.Write(FormatType(parent));
                    first = false;
                }

                foreach (Type intf in interfaces)
                {
                    if (!first)
                    {
                        o.Write(", ");
                    }
                    first = false;

                    o.Write(FormatType(intf));
                }
            }

            if (t.IsEnum)
            {
                Type underlyingType = t.GetEnumUnderlyingType();
                if (underlyingType != type_int)
                {
                    o.Write(" : {0}", FormatType(underlyingType));
                }
            }
            WriteGenericConstraints(t.GetGenericArguments());
            o.WriteLine(" {");
            o.Indent++;

            if (t.IsEnum)
            {
                bool is_first = true;
                foreach (FieldInfo fi in t.GetFields(BindingFlags.Public | BindingFlags.Static))
                {
                    if (!is_first)
                    {
                        o.WriteLine(",");
                    }
                    is_first = false;
                    o.Write(fi.Name);
                }
                o.WriteLine();
                o.Indent--; o.WriteLine("}");
                return;
            }

            first = true;

            foreach (ConstructorInfo ci in t.GetConstructors(DefaultFlags))
            {
                if (!ShowMember(ci))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(ci);
                OutlineConstructor(ci);

                o.WriteLine();
            }


            first = true;

            foreach (MethodInfo m in Comparer.Sort(t.GetMethods(DefaultFlags)))
            {
                if (!ShowMember(m))
                {
                    continue;
                }

                if ((m.Attributes & MethodAttributes.SpecialName) != 0)
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(m);
                OutlineMethod(m);

                o.WriteLine();
            }

            first = true;

            foreach (MethodInfo m in t.GetMethods(DefaultFlags))
            {
                if (!ShowMember(m))
                {
                    continue;
                }

                if ((m.Attributes & MethodAttributes.SpecialName) == 0)
                {
                    continue;
                }
                if (!(m.Name.StartsWith("op_")))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(m);
                OutlineOperator(m);

                o.WriteLine();
            }

            first = true;

            foreach (PropertyInfo pi in Comparer.Sort(t.GetProperties(DefaultFlags)))
            {
                if (!((pi.CanRead && ShowMember(pi.GetGetMethod(true))) ||
                      (pi.CanWrite && ShowMember(pi.GetSetMethod(true)))))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(pi);
                OutlineProperty(pi);

                o.WriteLine();
            }

            first = true;

            foreach (FieldInfo fi in t.GetFields(DefaultFlags))
            {
                if (!ShowMember(fi))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(fi);
                OutlineField(fi);

                o.WriteLine();
            }

            first = true;

            foreach (EventInfo ei in Comparer.Sort(t.GetEvents(DefaultFlags)))
            {
                if (!ShowMember(ei.GetAddMethod(true)))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

                OutlineMemberAttribute(ei);
                OutlineEvent(ei);

                o.WriteLine();
            }

            first = true;

            foreach (Type ntype in Comparer.Sort(t.GetNestedTypes(DefaultFlags)))
            {
                if (!ShowMember(ntype))
                {
                    continue;
                }

                if (first)
                {
                    o.WriteLine();
                }
                first = false;

#if STATIC
                new Outline(universe, mscorlib, ntype, o, declared_only, show_private, filter_obsolete).OutlineType();
#else
                new Outline(ntype, o, declared_only, show_private, filter_obsolete).OutlineType();
#endif
            }

            o.Indent--; o.WriteLine("}");
        }
Ejemplo n.º 6
0
        public static Conversion GetExplicit(Operand op, Type to, bool onlyStandard, ITypeMapper typeMapper)
        {
            // try implicit
            Conversion conv = GetImplicit(op, to, onlyStandard, typeMapper);

            if (conv.IsValid)
            {
                return(conv);
            }

            Type from = Operand.GetType(op, typeMapper);

            Type fromUnderlying = Helpers.GetNullableUnderlyingType(@from);

            if (fromUnderlying == to)
            {
                return(new UnwrapNullable(typeMapper));
            }


            Type toUnderlying = Helpers.GetNullableUnderlyingType(to);

            if (toUnderlying != null && fromUnderlying != null)
            {
                var c = GetExplicit(new FakeTypedOperand(fromUnderlying), toUnderlying, onlyStandard, typeMapper);
                if (c.IsValid)
                {
                    return(new ConvertNullable(typeMapper, c));
                }
            }


            // section 6.3.2 - Standard explicit conversions
            if (onlyStandard)
            {
                if (from == null || !GetImplicit(to, @from, true, typeMapper).IsValid)
                {
                    return(new Invalid(typeMapper));
                }
            }

            TypeCode tcFrom = Type.GetTypeCode(from);
            TypeCode tcTo   = Type.GetTypeCode(to);
            byte     ct     = _convTable[(int)tcFrom][(int)tcTo];

            // section 6.2.1 - Explicit numeric conversions, 6.2.2 - Explicit enumeration conversions
            if ((from.IsPrimitive || from.IsEnum || Helpers.AreTypesEqual(from, typeof(decimal), typeMapper)) && (to.IsPrimitive || to.IsEnum || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper)))
            {
                if (ct == D)
                {
                    return(new Direct(typeMapper));                     // this can happen for conversions involving enum-s
                }
                if (ct <= E)
                {
                    if (Helpers.AreTypesEqual(from, typeof(decimal), typeMapper) || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper))
                    {
                        // decimal is handled as user-defined conversion, but as it is a standard one, always enable UDC processing
                        onlyStandard = false;
                    }
                    else
                    {
                        return(new Primitive(typeMapper));
                    }
                }
            }

            // section 6.2.5 - User-defined explicit conversions (details in section 6.4.4)
            if (!(onlyStandard || Helpers.AreTypesEqual(from, typeof(object), typeMapper) || Helpers.AreTypesEqual(to, typeof(object), typeMapper) || from.IsInterface || to.IsInterface ||
                  to.IsSubclassOf(from) || from.IsSubclassOf(to)))
            {
                List <UserDefined> candidates = null;
                FindCandidates(ref candidates, FindExplicitMethods(from, to, typeMapper), op, to, GetExplicit, typeMapper);

                if (candidates != null)
                {
                    if (candidates.Count == 1)
                    {
                        return(candidates[0]);
                    }

                    return(UserDefined.FindExplicit(candidates, @from, to, typeMapper));
                }
            }

            // section 6.2.3 - Explicit reference conversions, 6.2.4 - Unboxing conversions
            // TODO: not really according to spec, but mostly works
            if (!from.IsValueType && from.IsAssignableFrom(to))
            {
                if (to.IsValueType)
                {
                    return(new Unboxing(typeMapper));
                }
                else
                {
                    return(new Cast(typeMapper));
                }
            }

            return(new Invalid(typeMapper));
        }
Ejemplo n.º 7
0
        // the sections mentioned in comments of this method are from C# specification v1.2
        public static Conversion GetImplicit(Operand op, Type to, bool onlyStandard, ITypeMapper typeMapper)
        {
            Type from = Operand.GetType(op, typeMapper);

            Type toUnderlying = Helpers.GetNullableUnderlyingType(to);

            if (to.Equals(from))
            {
                return(new Direct(typeMapper));
            }

            Type fromUnderlying = Helpers.GetNullableUnderlyingType(@from);

            if (toUnderlying != null)
            {
                if (fromUnderlying != null)
                {
                    Conversion c = GetImplicit(new FakeTypedOperand(fromUnderlying), toUnderlying, onlyStandard, typeMapper);
                    if (c.IsValid)
                    {
                        return(new ConvertNullable(typeMapper, c));
                    }
                }
                else
                {
                    Conversion c = GetImplicit(op, toUnderlying, onlyStandard, typeMapper);
                    if (c.IsValid)
                    {
                        return(new WrapNullable(typeMapper, c));
                    }
                }
            }

            // required for arrays created from TypeBuilder-s
            if (from != null && to.IsArray && from.IsArray)
            {
                if (to.GetArrayRank() == from.GetArrayRank())
                {
                    if (to.GetElementType().Equals(from.GetElementType()))
                    {
                        return(new Direct(typeMapper));
                    }
                }
            }

            TypeCode tcFrom = Type.GetTypeCode(from);
            TypeCode tcTo   = Type.GetTypeCode(to);
            byte     ct     = _convTable[(int)tcFrom][(int)tcTo];

            // section 6.1.2 - Implicit numeric conversions
            if (from != null && (from.IsPrimitive || Helpers.AreTypesEqual(from, typeof(decimal), typeMapper)) && (to.IsPrimitive || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper)))
            {
                if (ct <= I)
                {
                    if (Helpers.AreTypesEqual(from, typeof(decimal), typeMapper) || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper))
                    {
                        // decimal is handled as user-defined conversion, but as it is a standard one, always enable UDC processing
                        onlyStandard = false;
                    }
                    else
                    {
                        return(new Primitive(typeMapper));
                    }
                }
            }

            IntLiteral intLit = op as IntLiteral;

            // section 6.1.3 - Implicit enumeration conversions
            if (!onlyStandard && to.IsEnum && (object)intLit != null && intLit.Value == 0)
            {
                return(new Primitive(typeMapper));
            }

            // section 6.1.4 - Implicit reference conversions
            if ((from == null || !from.IsValueType) && !to.IsValueType)
            {
                if (from == null)                 // from the null type to any reference type
                {
                    return(new Direct(typeMapper));
                }

                if (to.IsAssignableFrom(from))                  // the rest
                {
                    return(new Direct(typeMapper));
                }
            }

            if (from == null)                   // no other conversion from null type is possible
            {
                return(new Invalid(typeMapper));
            }

            // section 6.1.5 - Boxing conversions
            if (from.IsValueType)
            {
                if (to.IsAssignableFrom(from))
                {
                    return(new Boxing(typeMapper));
                }
            }

            // section 6.1.6 - Implicit constant expression conversions
            if ((object)intLit != null && Helpers.AreTypesEqual(from, typeof(int), typeMapper) && to.IsPrimitive)
            {
                int val = intLit.Value;

                switch (tcTo)
                {
                case TypeCode.SByte:
                    if (val >= sbyte.MinValue && val <= sbyte.MaxValue)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;

                case TypeCode.Byte:
                    if (val >= byte.MinValue && val <= byte.MaxValue)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;

                case TypeCode.Int16:
                    if (val >= short.MinValue && val <= short.MaxValue)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;

                case TypeCode.UInt16:
                    if (val >= ushort.MinValue && val <= ushort.MaxValue)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;

                case TypeCode.UInt32:
                    if (val >= 0)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;

                case TypeCode.UInt64:
                    if (val >= 0)
                    {
                        return(new Direct(typeMapper));
                    }
                    break;
                }
            }

            // section 6.1.7 - User-defined implicit conversions (details in section 6.4.3)
            if (onlyStandard || Helpers.AreTypesEqual(from, typeof(object), typeMapper) || Helpers.AreTypesEqual(to, typeof(object), typeMapper) || from.IsInterface || to.IsInterface ||
                to.IsSubclassOf(from) || from.IsSubclassOf(to))
            {
                return(new Invalid(typeMapper));  // skip not-permitted conversion attempts (section 6.4.1)
            }
            List <UserDefined> candidates = null;

            FindCandidates(ref candidates, FindImplicitMethods(from, to, typeMapper), op, to, GetImplicit, typeMapper);

            if (candidates == null)
            {
                return(new Invalid(typeMapper));
            }

            if (candidates.Count == 1)
            {
                return(candidates[0]);
            }

            return(UserDefined.FindImplicit(candidates, @from, to, typeMapper));
        }
Ejemplo n.º 8
0
        internal static bool IsSubclassOf(Type type, Type baseClass)
        {
#if WINRT
            return type.GetTypeInfo().IsSubclassOf(baseClass);
#else
            return type.IsSubclassOf(baseClass);
#endif
        }
Ejemplo n.º 9
0
		private static bool IsDelegate(Type type)
		{
			// HACK non-public delegates do not get the special treatment (because they are likely to refer to
			// non-public types in the arg list and they're not really useful anyway)
			// NOTE we don't have to check in what assembly the type lives, because this is a DotNetTypeWrapper,
			// we know that it is a different assembly.
			if (!type.IsAbstract && type.IsSubclassOf(Types.MulticastDelegate) && type.IsVisible)
			{
				MethodInfo invoke = type.GetMethod("Invoke");
				if (invoke != null)
				{
					foreach (ParameterInfo p in invoke.GetParameters())
					{
						// we don't support delegates with pointer parameters
						if (IsPointerType(p.ParameterType))
						{
							return false;
						}
					}
					return !IsPointerType(invoke.ReturnType);
				}
			}
			return false;
		}
Ejemplo n.º 10
0
		private static bool IsAttribute(Type type)
		{
			if (!type.IsAbstract && type.IsSubclassOf(Types.Attribute) && type.IsVisible)
			{
				//
				// Based on the number of constructors and their arguments, we distinguish several types
				// of attributes:
				//                                   | def ctor | single 1-arg ctor
				// -----------------------------------------------------------------
				// complex only (i.e. Annotation{N}) |          |
				// all optional fields/properties    |    X     |
				// required "value"                  |          |   X
				// optional "value"                  |    X     |   X
				// -----------------------------------------------------------------
				// 
				// TODO currently we don't support "complex only" attributes.
				//
				ConstructorInfo defCtor;
				ConstructorInfo singleOneArgCtor;
				AttributeAnnotationTypeWrapper.GetConstructors(type, out defCtor, out singleOneArgCtor);
				return defCtor != null || singleOneArgCtor != null;
			}
			return false;
		}
Ejemplo n.º 11
0
		public static Conversion GetExplicit(Operand op, Type to, bool onlyStandard, ITypeMapper typeMapper)
		{
			// try implicit
			Conversion conv = GetImplicit(op, to, onlyStandard, typeMapper);
			if (conv.IsValid)
				return conv;

			Type from = Operand.GetType(op, typeMapper);

		    Type fromUnderlying = Helpers.GetNullableUnderlyingType(@from);
		    if (fromUnderlying == to)
                return new UnwrapNullable(typeMapper);


            Type toUnderlying = Helpers.GetNullableUnderlyingType(to);
            if (toUnderlying != null && fromUnderlying != null)
            {
                var c = GetExplicit(new FakeTypedOperand(fromUnderlying), toUnderlying, onlyStandard, typeMapper);
                if (c.IsValid) return new ConvertNullable(typeMapper, c);
            }


		    // section 6.3.2 - Standard explicit conversions
            if (onlyStandard)
			{
				if (from == null || !GetImplicit(to, @from, true, typeMapper).IsValid)
					return new Invalid(typeMapper);
			}

			TypeCode tcFrom = Type.GetTypeCode(from);
			TypeCode tcTo = Type.GetTypeCode(to);
			byte ct = _convTable[(int)tcFrom][(int)tcTo];

			// section 6.2.1 - Explicit numeric conversions, 6.2.2 - Explicit enumeration conversions
			if ((from.IsPrimitive || from.IsEnum || Helpers.AreTypesEqual(from, typeof(decimal), typeMapper)) && (to.IsPrimitive || to.IsEnum || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper)))
			{
				if (ct == D)
					return new Direct(typeMapper);	// this can happen for conversions involving enum-s

				if (ct <= E)
				{
				    if (Helpers.AreTypesEqual(from, typeof(decimal), typeMapper) || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper))
						// decimal is handled as user-defined conversion, but as it is a standard one, always enable UDC processing
						onlyStandard = false;
					else
                        return new Primitive(typeMapper);
				}
			}

			// section 6.2.5 - User-defined explicit conversions (details in section 6.4.4)
		    if (!(onlyStandard || Helpers.AreTypesEqual(from, typeof(object), typeMapper) || Helpers.AreTypesEqual(to, typeof(object), typeMapper) || from.IsInterface || to.IsInterface ||
				to.IsSubclassOf(from) || from.IsSubclassOf(to)))
			{
				List<UserDefined> candidates = null;
				FindCandidates(ref candidates, FindExplicitMethods(from, to, typeMapper), op, to, GetExplicit, typeMapper);

				if (candidates != null)
				{
					if (candidates.Count == 1)
						return candidates[0];

					return UserDefined.FindExplicit(candidates, @from, to, typeMapper);
				}
			}

			// section 6.2.3 - Explicit reference conversions, 6.2.4 - Unboxing conversions
			// TODO: not really according to spec, but mostly works
			if (!from.IsValueType && from.IsAssignableFrom(to))
			{
				if (to.IsValueType)
					return new Unboxing(typeMapper);
				else
					return new Cast(typeMapper);
			}

			return new Invalid(typeMapper);
		}
Ejemplo n.º 12
0
        // the sections mentioned in comments of this method are from C# specification v1.2
		public static Conversion GetImplicit(Operand op, Type to, bool onlyStandard, ITypeMapper typeMapper)
		{
			Type from = Operand.GetType(op, typeMapper);

            Type toUnderlying = Helpers.GetNullableUnderlyingType(to);
		    if (to.Equals(from))
		        return new Direct(typeMapper);

            Type fromUnderlying = Helpers.GetNullableUnderlyingType(@from);
		    if (toUnderlying != null)
		    {
		        if (fromUnderlying != null)
		        {
		            Conversion c = GetImplicit(new FakeTypedOperand(fromUnderlying), toUnderlying, onlyStandard, typeMapper);
		            if (c.IsValid) return new ConvertNullable(typeMapper, c);
		        }
		        else
		        {
                    Conversion c = GetImplicit(op, toUnderlying, onlyStandard, typeMapper);
                    if (c.IsValid) return new WrapNullable(typeMapper, c);
                }
		    }
            
		    // required for arrays created from TypeBuilder-s
			if (from != null && to.IsArray && from.IsArray)
			{
				if (to.GetArrayRank() == from.GetArrayRank())
				{
					if (to.GetElementType().Equals(from.GetElementType()))
						return new Direct(typeMapper);
				}
			}

			TypeCode tcFrom = Type.GetTypeCode(from);
			TypeCode tcTo = Type.GetTypeCode(to);
			byte ct = _convTable[(int)tcFrom][(int)tcTo];

			// section 6.1.2 - Implicit numeric conversions
			if (from != null && (from.IsPrimitive || Helpers.AreTypesEqual(from, typeof(decimal), typeMapper)) && (to.IsPrimitive || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper)))
			{
				if (ct <= I)
				{
				    if (Helpers.AreTypesEqual(from, typeof(decimal), typeMapper) || Helpers.AreTypesEqual(to, typeof(decimal), typeMapper))
						// decimal is handled as user-defined conversion, but as it is a standard one, always enable UDC processing
						onlyStandard = false;
					else
						return new Primitive(typeMapper);
				}
			}

			IntLiteral intLit = op as IntLiteral;

			// section 6.1.3 - Implicit enumeration conversions
			if (!onlyStandard && to.IsEnum && (object)intLit != null && intLit.Value == 0)
				return new Primitive(typeMapper);

			// section 6.1.4 - Implicit reference conversions
			if ((from == null || !from.IsValueType) && !to.IsValueType)
			{
				if (from == null) // from the null type to any reference type
					return new Direct(typeMapper);

				if (to.IsAssignableFrom(from))	// the rest
					return new Direct(typeMapper);
			}

			if (from == null)	// no other conversion from null type is possible
				return new Invalid(typeMapper);

			// section 6.1.5 - Boxing conversions
			if (from.IsValueType)
			{
				if (to.IsAssignableFrom(from))
					return new Boxing(typeMapper);
			}

			// section 6.1.6 - Implicit constant expression conversions
			if ((object)intLit != null && Helpers.AreTypesEqual(from, typeof(int), typeMapper) && to.IsPrimitive)
			{
				int val = intLit.Value;

				switch (tcTo)
				{
					case TypeCode.SByte:
						if (val >= sbyte.MinValue && val <= sbyte.MaxValue)
							return new Direct(typeMapper);
						break;
					case TypeCode.Byte:
						if (val >= byte.MinValue && val <= byte.MaxValue)
                            return new Direct(typeMapper);
                        break;
					case TypeCode.Int16:
						if (val >= short.MinValue && val <= short.MaxValue)
                            return new Direct(typeMapper);
                        break;
					case TypeCode.UInt16:
						if (val >= ushort.MinValue && val <= ushort.MaxValue)
                            return new Direct(typeMapper);
                        break;
					case TypeCode.UInt32:
						if (val >= 0)
                            return new Direct(typeMapper);
                        break;
					case TypeCode.UInt64:
						if (val >= 0)
                            return new Direct(typeMapper);
                        break;
				}
			}

			// section 6.1.7 - User-defined implicit conversions (details in section 6.4.3)
			if (onlyStandard || Helpers.AreTypesEqual(from, typeof(object), typeMapper) || Helpers.AreTypesEqual(to, typeof(object), typeMapper) || from.IsInterface || to.IsInterface ||
				to.IsSubclassOf(from) || from.IsSubclassOf(to))
                return new Invalid(typeMapper);  // skip not-permitted conversion attempts (section 6.4.1)

            List<UserDefined> candidates = null;
			FindCandidates(ref candidates, FindImplicitMethods(from, to, typeMapper), op, to, GetImplicit, typeMapper);

			if (candidates == null)
                return new Invalid(typeMapper);

            if (candidates.Count == 1)
				return candidates[0];

			return UserDefined.FindImplicit(candidates, @from, to, typeMapper);
		}
 static bool IsSubclassOf(Type base_class, Type derived_class)
 {
     return(derived_class.IsSubclassOf(base_class));
 }
Ejemplo n.º 14
0
        void Initialize(Type targetType, string methodName)
        {
            if (!_delegateType.IsSubclassOf(_typeMapper.MapType(typeof(Delegate))))
            {
                throw new ArgumentException(Properties.Messages.ErrInvalidDelegateType, "delegateType");
            }

            IMemberInfo delegateInvocationMethod = null;

            foreach (IMemberInfo mi in _typeMapper.TypeInfo.GetMethods(_delegateType))
            {
                if (mi.Name == "Invoke")
                {
                    if (delegateInvocationMethod != null)
                    {
                        throw new ArgumentException(Properties.Messages.ErrInvalidDelegateType, "delegateType");
                    }

                    delegateInvocationMethod = mi;
                }
            }

            if (delegateInvocationMethod == null)
            {
                throw new ArgumentException(Properties.Messages.ErrInvalidDelegateType, "delegateType");
            }

            foreach (IMemberInfo mi in _typeMapper.TypeInfo.GetConstructors(_delegateType))
            {
                if (mi.IsStatic)
                {
                    continue;
                }

                Type[] ctorParamTypes = mi.ParameterTypes;

                if (ctorParamTypes.Length == 2 && ctorParamTypes[0] == _typeMapper.MapType(typeof(object)) && ctorParamTypes[1] == _typeMapper.MapType(typeof(IntPtr)))
                {
                    if (_delegateConstructor != null)
                    {
                        throw new ArgumentException(Properties.Messages.ErrInvalidDelegateType, "delegateType");
                    }

                    _delegateConstructor = (ConstructorInfo)mi.Member;
                }
            }

            if (_delegateConstructor == null)
            {
                throw new ArgumentException(Properties.Messages.ErrInvalidDelegateType, "delegateType");
            }

            Type retType = delegateInvocationMethod.ReturnType;

            Type[] parameterTypes = delegateInvocationMethod.ParameterTypes;

            for ( ; targetType != null; targetType = targetType.BaseType)
            {
                foreach (IMemberInfo mi in _typeMapper.TypeInfo.Filter(_typeMapper.TypeInfo.GetMethods(targetType), methodName, false, (object)_target == null, false))
                {
                    if (mi.ReturnType == retType && ArrayUtils.Equals(mi.ParameterTypes, parameterTypes))
                    {
                        if (_method == null)
                        {
                            _method = (MethodInfo)mi.Member;
                        }
                        else
                        {
                            throw new AmbiguousMatchException(Properties.Messages.ErrAmbiguousBinding);
                        }
                    }
                }

                if (_method != null)
                {
                    break;
                }
            }

            if (_method == null)
            {
                throw new MissingMethodException(Properties.Messages.ErrMissingMethod);
            }
        }
Ejemplo n.º 15
0
	string GetTypeKind (Type t)
	{
		if (t.IsEnum)
			return "enum";
		if (t.IsClass) {
			if (t.IsSubclassOf (type_multicast_delegate))
				return "delegate";
			else
				return "class";
		}
		if (t.IsInterface)
			return "interface";
		if (t.IsValueType)
			return "struct";
		return "class";
	}