/// <summary>
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to
/// the same compatibility standards as public APIs. It may be changed or removed without notice in
/// any release. You should only use it directly in your code with extreme caution and knowing that
/// doing so can result in application failures when updating to a new Entity Framework Core release.
/// </summary>
public static bool TryGetMemberInfo(
[NotNull] this IPropertyBase propertyBase,
bool forConstruction,
bool forSet,
out MemberInfo memberInfo,
out string errorMessage)
{
memberInfo = null;
errorMessage = null;
var propertyInfo = propertyBase.PropertyInfo;
var fieldInfo = propertyBase.FieldInfo;
var setterProperty = propertyInfo?.FindSetterProperty();
var getterProperty = propertyInfo?.FindGetterProperty();
var isCollectionNav = (propertyBase as INavigation)?.IsCollection() == true;
var hasField = fieldInfo != null;
var hasSetter = setterProperty != null;
var hasGetter = getterProperty != null;
var mode = propertyBase.GetPropertyAccessMode();
if (forConstruction)
{
if (mode == PropertyAccessMode.Field ||
mode == PropertyAccessMode.FieldDuringConstruction)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
if (isCollectionNav)
{
return(true);
}
errorMessage = GetNoFieldErrorMessage(propertyBase);
return(false);
}
if (mode == PropertyAccessMode.Property)
{
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
if (isCollectionNav)
{
return(true);
}
errorMessage = hasGetter
? CoreStrings.NoSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode))
: CoreStrings.NoProperty(fieldInfo?.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
if (mode == PropertyAccessMode.PreferField ||
mode == PropertyAccessMode.PreferFieldDuringConstruction)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
}
if (mode == PropertyAccessMode.PreferProperty)
{
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
}
if (isCollectionNav)
{
return(true);
}
errorMessage = CoreStrings.NoFieldOrSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
if (forSet)
{
if (mode == PropertyAccessMode.Field)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
if (isCollectionNav)
{
return(true);
}
errorMessage = GetNoFieldErrorMessage(propertyBase);
return(false);
}
if (mode == PropertyAccessMode.Property)
{
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
if (isCollectionNav)
{
return(true);
}
errorMessage = hasGetter
? CoreStrings.NoSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode))
: CoreStrings.NoProperty(fieldInfo?.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
if (mode == PropertyAccessMode.PreferField)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
}
if (mode == PropertyAccessMode.PreferProperty ||
mode == PropertyAccessMode.FieldDuringConstruction ||
mode == PropertyAccessMode.PreferFieldDuringConstruction)
{
if (hasSetter)
{
memberInfo = setterProperty;
return(true);
}
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
}
if (isCollectionNav)
{
return(true);
}
errorMessage = CoreStrings.NoFieldOrSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
// forGet
if (mode == PropertyAccessMode.Field)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
errorMessage = GetNoFieldErrorMessage(propertyBase);
return(false);
}
if (mode == PropertyAccessMode.Property)
{
if (hasGetter)
{
memberInfo = getterProperty;
return(true);
}
errorMessage = hasSetter
? CoreStrings.NoGetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode))
: CoreStrings.NoProperty(fieldInfo?.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
if (mode == PropertyAccessMode.PreferField)
{
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
if (hasGetter)
{
memberInfo = getterProperty;
return(true);
}
}
if (mode == PropertyAccessMode.PreferProperty ||
mode == PropertyAccessMode.FieldDuringConstruction ||
mode == PropertyAccessMode.PreferFieldDuringConstruction)
{
if (hasGetter)
{
memberInfo = getterProperty;
return(true);
}
if (hasField)
{
memberInfo = fieldInfo;
return(true);
}
}
errorMessage = CoreStrings.NoFieldOrGetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public static bool TryGetMemberInfo(
[NotNull] this IPropertyBase propertyBase,
bool forConstruction,
bool forSet,
[CanBeNull] out MemberInfo memberInfo,
[CanBeNull] out string errorMessage)
{
memberInfo = null;
errorMessage = null;
var propertyInfo = propertyBase.PropertyInfo;
var fieldInfo = propertyBase.FieldInfo;
var isCollectionNav = (propertyBase as INavigation)?.IsCollection() == true;
var mode = propertyBase.GetPropertyAccessMode();
if (mode == null ||
mode == PropertyAccessMode.FieldDuringConstruction)
{
if (forConstruction &&
fieldInfo != null &&
!fieldInfo.IsInitOnly)
{
memberInfo = fieldInfo;
return(true);
}
if (forConstruction)
{
if (fieldInfo != null)
{
if (!fieldInfo.IsInitOnly)
{
memberInfo = fieldInfo;
return(true);
}
if (mode == PropertyAccessMode.FieldDuringConstruction &&
!isCollectionNav)
{
errorMessage = CoreStrings.ReadonlyField(fieldInfo.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
}
if (mode == PropertyAccessMode.FieldDuringConstruction)
{
if (!isCollectionNav)
{
errorMessage = CoreStrings.NoBackingField(
propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
return(true);
}
}
if (forSet)
{
var setterProperty = propertyInfo?.FindSetterProperty();
if (setterProperty != null)
{
memberInfo = setterProperty;
return(true);
}
if (fieldInfo != null)
{
if (!fieldInfo.IsInitOnly)
{
memberInfo = fieldInfo;
return(true);
}
if (!isCollectionNav)
{
errorMessage = CoreStrings.ReadonlyField(fieldInfo.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
}
if (!isCollectionNav)
{
errorMessage = CoreStrings.NoFieldOrSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
return(true);
}
var getterPropertyInfo = propertyInfo?.FindGetterProperty();
if (getterPropertyInfo != null)
{
memberInfo = getterPropertyInfo;
return(true);
}
if (fieldInfo != null)
{
memberInfo = fieldInfo;
return(true);
}
errorMessage = CoreStrings.NoFieldOrGetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
if (mode == PropertyAccessMode.Field)
{
if (fieldInfo == null)
{
if (!forSet ||
!isCollectionNav)
{
errorMessage = CoreStrings.NoBackingField(
propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
return(true);
}
if (forSet &&
fieldInfo.IsInitOnly)
{
if (!isCollectionNav)
{
errorMessage = CoreStrings.ReadonlyField(fieldInfo.Name, propertyBase.DeclaringType.DisplayName());
return(false);
}
return(true);
}
memberInfo = fieldInfo;
return(true);
}
if (propertyInfo == null)
{
errorMessage = CoreStrings.NoProperty(fieldInfo.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
if (forSet)
{
var setterProperty = propertyInfo.FindSetterProperty();
if (setterProperty == null &&
!isCollectionNav)
{
errorMessage = CoreStrings.NoSetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
memberInfo = setterProperty;
return(true);
}
var getterProperty = propertyInfo.FindGetterProperty();
if (getterProperty == null)
{
errorMessage = CoreStrings.NoGetter(propertyBase.Name, propertyBase.DeclaringType.DisplayName(), nameof(PropertyAccessMode));
return(false);
}
memberInfo = getterProperty;
return(true);
}
