Esempio n. 1
0
        protected virtual bool PrepareMember(MemberDescriptorBase member)
        {
            var memberType = member.Type;

            // Remove all SyncRoot from members
            if (member is PropertyDescriptor && member.OriginalName == "SyncRoot" &&
                (member.DeclaringType.Namespace ?? string.Empty).StartsWith(SystemCollectionsNamespace))
            {
                return(false);
            }

            // Process all attributes just once instead of getting them one by one
            var attributes = AttributeRegistry.GetAttributes(member.MemberInfo);
            YamlStyleAttribute    styleAttribute        = null;
            YamlMemberAttribute   memberAttribute       = null;
            DefaultValueAttribute defaultValueAttribute = null;

            foreach (var attribute in attributes)
            {
                // Member is not displayed if there is a YamlIgnore attribute on it
                if (attribute is YamlIgnoreAttribute)
                {
                    return(false);
                }

                if (attribute is YamlMemberAttribute)
                {
                    memberAttribute = (YamlMemberAttribute)attribute;
                    continue;
                }

                if (attribute is DefaultValueAttribute)
                {
                    defaultValueAttribute = (DefaultValueAttribute)attribute;
                    continue;
                }

                if (attribute is YamlStyleAttribute)
                {
                    styleAttribute = (YamlStyleAttribute)attribute;
                    continue;
                }

                var yamlRemap = attribute as YamlRemapAttribute;
                if (yamlRemap != null)
                {
                    if (member.AlternativeNames == null)
                    {
                        member.AlternativeNames = new List <string>();
                    }
                    if (!string.IsNullOrEmpty(yamlRemap.Name))
                    {
                        member.AlternativeNames.Add(yamlRemap.Name);
                    }
                }
            }

            // If the member has a set, this is a conventional assign method
            if (member.HasSet)
            {
                member.SerializeMemberMode = SerializeMemberMode.Content;
            }
            else
            {
                // Else we cannot only assign its content if it is a class
                member.SerializeMemberMode = (memberType != typeof(string) && memberType.GetTypeInfo().IsClass) || memberType.GetTypeInfo().IsInterface || type.IsAnonymous() ? SerializeMemberMode.Content : SerializeMemberMode.Never;
            }

            // If it's a private member, check it has a YamlMemberAttribute on it
            if (!member.IsPublic)
            {
                if (memberAttribute == null)
                {
                    return(false);
                }
            }

            // Gets the style
            member.Style = styleAttribute != null ? styleAttribute.Style : YamlStyle.Any;
            member.Mask  = 1;

            // Handle member attribute
            if (memberAttribute != null)
            {
                member.Mask = memberAttribute.Mask;
                if (!member.HasSet)
                {
                    if (memberAttribute.SerializeMethod == SerializeMemberMode.Assign ||
                        (memberType.GetTypeInfo().IsValueType&& member.SerializeMemberMode == SerializeMemberMode.Content))
                    {
                        throw new ArgumentException("{0} {1} is not writeable by {2}.".DoFormat(memberType.FullName, member.OriginalName, memberAttribute.SerializeMethod.ToString()));
                    }
                }

                if (memberAttribute.SerializeMethod != SerializeMemberMode.Default)
                {
                    member.SerializeMemberMode = memberAttribute.SerializeMethod;
                }
                member.Order = memberAttribute.Order;
            }

            if (member.SerializeMemberMode == SerializeMemberMode.Binary)
            {
                if (!memberType.IsArray)
                {
                    throw new InvalidOperationException("{0} {1} of {2} is not an array. Can not be serialized as binary."
                                                        .DoFormat(memberType.FullName, member.OriginalName, type.FullName));
                }
                if (!memberType.GetElementType().IsPureValueType())
                {
                    throw new InvalidOperationException("{0} is not a pure ValueType. {1} {2} of {3} can not serialize as binary.".DoFormat(memberType.GetElementType(), memberType.FullName, member.OriginalName, type.FullName));
                }
            }

            // If this member cannot be serialized, remove it from the list
            if (member.SerializeMemberMode == SerializeMemberMode.Never)
            {
                return(false);
            }

            // ShouldSerialize
            //	  YamlSerializeAttribute(Never) => false
            //	  ShouldSerializeSomeProperty => call it
            //	  DefaultValueAttribute(default) => compare to it
            //	  otherwise => true
            var shouldSerialize = type.GetMethod("ShouldSerialize" + member.OriginalName, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);

            if (shouldSerialize != null && shouldSerialize.ReturnType == typeof(bool) && member.ShouldSerialize == null)
            {
                member.ShouldSerialize = obj => (bool)shouldSerialize.Invoke(obj, EmptyObjectArray);
            }

            if (defaultValueAttribute != null && member.ShouldSerialize == null && !emitDefaultValues)
            {
                object defaultValue = defaultValueAttribute.Value;
                Type   defaultType  = defaultValue == null ? null : defaultValue.GetType();
                if (defaultType.IsNumeric() && defaultType != memberType)
                {
                    defaultValue = memberType.CastToNumericType(defaultValue);
                }
                member.ShouldSerialize = obj => !TypeExtensions.AreEqual(defaultValue, member.Get(obj));
            }

            if (member.ShouldSerialize == null)
            {
                member.ShouldSerialize = ShouldSerializeDefault;
            }

            if (memberAttribute != null && !string.IsNullOrEmpty(memberAttribute.Name))
            {
                member.Name = memberAttribute.Name;
            }
            else
            {
                member.Name = NamingConvention.Convert(member.OriginalName);
            }

            return(true);
        }
Esempio n. 2
0
        protected virtual bool PrepareMember(MemberDescriptorBase member)
        {
            var memberType = member.Type;

            // Remove all SyncRoot from members
            if (member is PropertyDescriptor && member.Name == "SyncRoot" &&
                (member.DeclaringType.Namespace ?? string.Empty).StartsWith(SystemCollectionsNamespace))
            {
                return false;
            }

            // If the member has a set, this is a conventional assign method
            if (member.HasSet)
            {
                member.SerializeMemberMode = SerializeMemberMode.Assign;
            }
            else
            {
                // Else we cannot only assign its content if it is a class
                member.SerializeMemberMode = (memberType != typeof(string) && memberType.IsClass) || memberType.IsInterface || type.IsAnonymous() ? SerializeMemberMode.Content : SerializeMemberMode.Never;
            }

            // Member is not displayed if there is a YamlIgnore attribute on it
            if (AttributeRegistry.GetAttribute<YamlIgnoreAttribute>(member.MemberInfo, false) != null)
                return false;

            // Gets the style
            var styleAttribute = AttributeRegistry.GetAttribute<YamlStyleAttribute>(member.MemberInfo);
            member.Style = styleAttribute != null ? styleAttribute.Style : YamlStyle.Any;

            // Handle member attribute
            var memberAttribute = AttributeRegistry.GetAttribute<YamlMemberAttribute>(member.MemberInfo, false);
            if (memberAttribute != null)
            {
                if (!member.HasSet)
                {
                    if (memberAttribute.SerializeMethod == SerializeMemberMode.Assign ||
                        (memberType.IsValueType && member.SerializeMemberMode == SerializeMemberMode.Content))
                        throw new ArgumentException("{0} {1} is not writeable by {2}.".DoFormat(memberType.FullName, member.Name, memberAttribute.SerializeMethod.ToString()));
                }

                if (memberAttribute.SerializeMethod != SerializeMemberMode.Default)
                {
                    member.SerializeMemberMode = memberAttribute.SerializeMethod;
                }
                member.Order = memberAttribute.Order;
            }

            if (member.SerializeMemberMode == SerializeMemberMode.Binary)
            {
                if (!memberType.IsArray)
                    throw new InvalidOperationException("{0} {1} of {2} is not an array. Can not be serialized as binary."
                                                            .DoFormat(memberType.FullName, member.Name, type.FullName));
                if (!memberType.GetElementType().IsPureValueType())
                    throw new InvalidOperationException("{0} is not a pure ValueType. {1} {2} of {3} can not serialize as binary.".DoFormat(memberType.GetElementType(), memberType.FullName, member.Name, type.FullName));
            }

            // If this member cannot be serialized, remove it from the list
            if (member.SerializeMemberMode == SerializeMemberMode.Never)
            {
                return false;
            }

            // ShouldSerialize
            //	  YamlSerializeAttribute(Never) => false
            //	  ShouldSerializeSomeProperty => call it
            //	  DefaultValueAttribute(default) => compare to it
            //	  otherwise => true
            var shouldSerialize = type.GetMethod("ShouldSerialize" + member.Name, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
            if (shouldSerialize != null && shouldSerialize.ReturnType == typeof(bool) && member.ShouldSerialize == null)
                member.ShouldSerialize = obj => (bool)shouldSerialize.Invoke(obj, EmptyObjectArray);

            var defaultValueAttribute = AttributeRegistry.GetAttribute<DefaultValueAttribute>(member.MemberInfo);
            if (defaultValueAttribute != null && member.ShouldSerialize == null && !emitDefaultValues)
            {
                object defaultValue = defaultValueAttribute.Value;
                Type defaultType = defaultValue == null ? null : defaultValue.GetType();
                if (defaultType.IsNumeric() && defaultType != memberType)
                    defaultValue = memberType.CastToNumericType(defaultValue);
                member.ShouldSerialize = obj => !TypeExtensions.AreEqual(defaultValue, member.Get(obj));
            }

            if (member.ShouldSerialize == null)
                member.ShouldSerialize = obj => true;

            if (memberAttribute != null && !string.IsNullOrEmpty(memberAttribute.Name))
            {
                member.Name = memberAttribute.Name;
            }

            return true;
        }