protected override Func <PropertyInfo, Delegate> Call <TObj, TValue>()
{
return(property =>
{
IGetter <TObj, TValue> getter = Getter.Create <TObj, TValue>(property);
return new ProcessField <Data, TObj, TValue>(
(Data data, TObj obj, ref TValue valuea) =>
{
TValue valueb = getter.Apply((TObj)data.X);
VisitorScope <Data> result = VisitStatus.Continue;
return result + Optional.From(new Data(valueb));
});
});
}
/// <summary>
/// 属性
/// </summary>
/// <param name="property">属性信息</param>
private PropertyDescriptor(PropertyInfo property)
{
var aliasAs = property.GetAttribute <AliasAsAttribute>(true);
this.AliasName = aliasAs == null ? property.Name : aliasAs.Name;
if (property.PropertyType == typeof(DateTime) || property.PropertyType == typeof(DateTime?))
{
var formatAttribute = property.GetAttribute <DateTimeFormatAttribute>(true);
this.DateTimeFormat = formatAttribute == null ? null : formatAttribute.Format;
}
if (property.CanRead == true)
{
this.getter = Getter.Create(property);
}
this.IgnoreSerialized = property.IsDefined(typeof(IgnoreSerializedAttribute));
this.IsSupportGet = this.getter != null;
}
public void GetterSetter()
{
{
IGetter <MyClass, string> getter = Getter.Create <MyClass, string>(nameof(MyClass.MyStringProp));
ISetter <MyClass, string> setter = Setter.Create <MyClass, string>(nameof(MyClass.MyStringProp));
var obj = new MyClass();
Assert.Null(getter.Apply(obj));
setter.Apply(obj, "abc");
Assert.Equal("abc", getter.Apply(obj));
setter.Apply(obj, "def");
Assert.Equal("def", getter.Apply(obj));
}
{
IGetter <MyStruct, string> getter = Getter.Create <MyStruct, string>(nameof(MyStruct.MyStringProp));
ISetter <MyStruct, string> setter = Setter.Create <MyStruct, string>(nameof(MyStruct.MyStringProp));
var obj = new MyStruct();
Assert.Null(getter.Apply(obj));
setter.Apply(obj, "abc");
Assert.Equal("abc", getter.Apply(obj));
setter.Apply(obj, "def");
Assert.Equal("def", getter.Apply(obj));
}
}
public static Lens <S, T, A, B> Create <S, T, A, B>(Func <S, A> getterFunc, Func <Func <A, B>, S, T> setterFunc) => new Lens <S, T, A, B>(Getter.Create(getterFunc), Setter.Create(setterFunc));