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- using IPA.Config.Stores.Attributes;
- using IPA.Logging;
- using IPA.Utilities;
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Reflection;
- using System.Text;
- using System.Threading.Tasks;
- #if NET3
- using Net3_Proxy;
- using Array = Net3_Proxy.Array;
- #endif
-
- namespace IPA.Config.Stores
- {
- internal static partial class GeneratedStoreImpl
- {
- private class SerializedMemberInfo
- {
- public string Name;
- public MemberInfo Member;
- public Type Type;
- public bool AllowNull;
- public bool IsVirtual;
- public bool IsField;
- public bool IsNullable; // signifies whether this is a Nullable<T>
-
- public bool HasConverter;
- public bool IsGenericConverter; // used so we can call directly to the generic version if it is
- public Type Converter;
- public Type ConverterBase;
- public Type ConverterTarget;
- public FieldInfo ConverterField;
-
- // invalid for objects with IsNullable false
- public Type NullableWrappedType => Nullable.GetUnderlyingType(Type);
- // invalid for objects with IsNullable false
- public PropertyInfo Nullable_HasValue => Type.GetProperty(nameof(Nullable<int>.HasValue));
- // invalid for objects with IsNullable false
- public PropertyInfo Nullable_Value => Type.GetProperty(nameof(Nullable<int>.Value));
- // invalid for objects with IsNullable false
- public ConstructorInfo Nullable_Construct => Type.GetConstructor(new[] { NullableWrappedType });
-
- public Type ConversionType => IsNullable ? NullableWrappedType : Type;
- }
- private static bool IsMethodInvalid(MethodInfo m, Type ret) => !m.IsVirtual || m.ReturnType != ret;
- private static bool ProcessAttributesFor(Type type, ref SerializedMemberInfo member)
- {
- var attrs = member.Member.GetCustomAttributes(true);
- var ignores = attrs.Select(o => o as IgnoreAttribute).NonNull();
- if (ignores.Any() || typeof(Delegate).IsAssignableFrom(member.Type))
- { // we ignore delegates completely because there is no a good way to serialize them
- return false;
- }
-
- var nonNullables = attrs.Select(o => o as NonNullableAttribute).NonNull();
-
- member.Name = member.Member.Name;
- member.IsNullable = member.Type.IsGenericType
- && member.Type.GetGenericTypeDefinition() == typeof(Nullable<>);
- member.AllowNull = !nonNullables.Any() && (!member.Type.IsValueType || member.IsNullable);
-
- var nameAttr = attrs.Select(o => o as SerializedNameAttribute).NonNull().FirstOrDefault();
- if (nameAttr != null)
- member.Name = nameAttr.Name;
-
- member.HasConverter = false;
- var converterAttr = attrs.Select(o => o as UseConverterAttribute).NonNull().FirstOrDefault();
- if (converterAttr != null)
- {
- member.Converter = converterAttr.ConverterType;
- member.IsGenericConverter = converterAttr.IsGenericConverter;
-
- if (member.Converter.GetConstructor(Type.EmptyTypes) == null)
- {
- Logger.config.Warn($"{type.FullName}'s member {member.Member.Name} requests a converter that is not default-constructible");
- goto endConverterAttr; // is there a better control flow structure to do this?
- }
-
- if (member.Converter.ContainsGenericParameters)
- {
- Logger.config.Warn($"{type.FullName}'s member {member.Member.Name} requests a converter that has unfilled type parameters");
- goto endConverterAttr;
- }
-
- if (member.Converter.IsInterface || member.Converter.IsAbstract)
- {
- Logger.config.Warn($"{type.FullName}'s member {member.Member.Name} requests a converter that is not constructible");
- goto endConverterAttr;
- }
-
- var targetType = converterAttr.ConverterTargetType;
- if (!member.IsGenericConverter)
- {
- try
- {
- var conv = Activator.CreateInstance(converterAttr.ConverterType) as IValueConverter;
- targetType = conv.Type;
- }
- catch
- {
- Logger.config.Warn($"{type.FullName}'s member {member.Member.Name} requests a converter who's target type could not be determined");
- goto endConverterAttr;
- }
- }
- if (targetType != member.Type)
- {
- Logger.config.Warn($"{type.FullName}'s member {member.Member.Name} requests a converter that is not of the member's type");
- goto endConverterAttr;
- }
-
- member.ConverterTarget = targetType;
- if (member.IsGenericConverter)
- member.ConverterBase = typeof(ValueConverter<>).MakeGenericType(targetType);
- else
- member.ConverterBase = typeof(IValueConverter);
-
- member.HasConverter = true;
- }
- endConverterAttr:
-
- return true;
- }
-
- private static readonly Dictionary<Type, SerializedMemberInfo[]> objectStructureCache = new Dictionary<Type, SerializedMemberInfo[]>();
-
- private static IEnumerable<SerializedMemberInfo> ReadObjectMembers(Type type)
- {
- if (!objectStructureCache.TryGetValue(type, out var structure))
- objectStructureCache.Add(type, structure = ReadObjectMembersInternal(type).ToArray());
- return structure;
- }
-
- private static IEnumerable<SerializedMemberInfo> ReadObjectMembersInternal(Type type)
- {
- var structure = new List<SerializedMemberInfo>();
-
- // only looks at public/protected properties
- foreach (var prop in type.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
- {
- if (prop.GetSetMethod(true)?.IsPrivate ?? true)
- { // we enter this block if the setter is inacessible or doesn't exist
- continue; // ignore props without setter
- }
- if (prop.GetGetMethod(true)?.IsPrivate ?? true)
- { // we enter this block if the getter is inacessible or doesn't exist
- continue; // ignore props without getter
- }
-
- var smi = new SerializedMemberInfo
- {
- Member = prop,
- IsVirtual = (prop.GetGetMethod(true)?.IsVirtual ?? false) ||
- (prop.GetSetMethod(true)?.IsVirtual ?? false),
- IsField = false,
- Type = prop.PropertyType
- };
-
- if (!ProcessAttributesFor(type, ref smi)) continue;
-
- structure.Add(smi);
- }
-
- // only look at public/protected fields
- foreach (var field in type.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
- {
- if (field.IsPrivate)
- continue;
-
- var smi = new SerializedMemberInfo
- {
- Member = field,
- IsVirtual = false,
- IsField = true,
- Type = field.FieldType
- };
-
- if (!ProcessAttributesFor(type, ref smi)) continue;
-
- structure.Add(smi);
- }
-
- return structure;
- }
- }
- }
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