/// <summary>
/// Constructor.
/// </summary>
/// <param name="field"><see cref="System.Reflection.FieldInfo"/> to wrap.</param>
internal ImmediateField([NotNull] FieldInfo field)
: base(field)
{
FieldInfo = field;
FieldType = field.FieldType;
#if SUPPORTS_LAZY
_fieldImmediateType = new Lazy <ImmediateType>(() => TypeAccessor.Get(FieldType));
#endif
// ReSharper disable once AssignNullToNotNullAttribute, Justification: A field is always declared inside a type.
DeclaringType = field.DeclaringType;
// ReSharper disable once PossibleNullReferenceException, Justification: Declaring type for a field is always considered not null.
// Current enum value field is not static compared to other enumeration available values fields
// => That's why we need the static check
if (field.IsStatic && DeclaringType.IsEnum)
{
// Getter / No setter
object enumValue = field.GetValue(null);
_getter = target => enumValue;
_setter = (target, value) => throw new FieldAccessException("Cannot set an enumeration value.");
}
else
{
// Getter / Setter
_getter = ConfigureGetter();
_setter = ConfigureSetter();
}
#region Local functions
bool IsConstantField()
{
return(field.IsLiteral || field.IsInitOnly);
}
GetterDelegate ConfigureGetter()
{
if (IsConstantField() && field.IsStatic)
{
object fieldValue = field.GetValue(null);
return(target => fieldValue);
}
return(DelegatesFactory.CreateGetter(field));
}
SetterDelegate ConfigureSetter()
{
if (IsConstantField())
{
return((target, value) => throw new FieldAccessException($"Field {Name} cannot be set."));
}
return(DelegatesFactory.CreateSetter(field));
}
#endregion
}
public ConstructorData <CopyConstructorDelegate> GetCopyConstructor([NotNull] Type type)
{
Debug.Assert(type != null);
return(_cachedCopyConstructors.GetOrCreate(type, () =>
{
CopyConstructorDelegate ctor = DelegatesFactory.CreateCopyConstructor(type, out bool hasConstructor);
return new ConstructorData <CopyConstructorDelegate>(ctor, hasConstructor);
}));
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="type"><see cref="System.Type"/> to wrap.</param>
/// <param name="flags">Flags that must be taken into account to get members.</param>
internal ImmediateType([NotNull] Type type, BindingFlags flags = TypeAccessor.DefaultFlags)
: base(type)
{
_flags = flags;
Type = type;
BaseType = type.BaseType;
DeclaringType = type.DeclaringType;
FullName = type.FullName ?? Name;
// Default constructor
#if SUPPORTS_CACHING
ConstructorData <DefaultConstructorDelegate> defaultCtorData = CachesHandler.Instance.GetDefaultConstructor(Type);
_constructor = defaultCtorData.Constructor;
HasDefaultConstructor = defaultCtorData.HasConstructor;
#else
_constructor = DelegatesFactory.CreateDefaultConstructor(Type, out bool hasConstructor);
HasDefaultConstructor = hasConstructor;
#endif
// Copy constructor
#if SUPPORTS_CACHING
ConstructorData <CopyConstructorDelegate> copyCtorData = CachesHandler.Instance.GetCopyConstructor(Type);
_copyConstructor = copyCtorData.Constructor;
HasCopyConstructor = copyCtorData.HasConstructor;
#else
_copyConstructor = DelegatesFactory.CreateCopyConstructor(Type, out bool hasConstructor);
HasCopyConstructor = hasConstructor;
#endif
if (type.IsEnum)
{
#if SUPPORTS_LAZY
_fields = new Lazy <ImmediateFields>(() => new ImmediateFields(type.GetFields()));
#else
Fields = new ImmediateFields(type.GetFields());
#endif
#if SUPPORTS_SYSTEM_CORE
Properties = new ImmediateProperties(Enumerable.Empty <PropertyInfo>());
#else
Properties = new ImmediateProperties(Empty <PropertyInfo>());
#endif
}
else
{
#if SUPPORTS_LAZY
_fields = new Lazy <ImmediateFields>(() => new ImmediateFields(IgnoreBackingFields(type.GetFields(_flags))));
#else
Fields = new ImmediateFields(IgnoreBackingFields(type.GetFields(_flags)));
#endif
Properties = new ImmediateProperties(type.GetProperties(_flags));
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="property"><see cref="System.Reflection.PropertyInfo"/> to wrap.</param>
internal ImmediateProperty([NotNull] PropertyInfo property)
: base(property)
{
Debug.Assert(!IsIndexed(property), $"Cannot initialize an {nameof(ImmediateProperty)} with an indexed property.");
// General property info
PropertyInfo = property;
PropertyType = property.PropertyType;
#if SUPPORTS_LAZY
_propertyImmediateType = new Lazy <ImmediateType>(() => TypeAccessor.Get(PropertyType));
#endif
// ReSharper disable once AssignNullToNotNullAttribute, Justification: A property is always declared inside a type.
DeclaringType = property.DeclaringType;
CanRead = property.CanRead;
CanWrite = property.CanWrite;
// Getter / Setter
_getter = ConfigureGetter();
_setter = ConfigureSetter();
#region Local functions
GetterDelegate ConfigureGetter()
{
GetterDelegate getter = null;
MethodInfo getMethod = property.GetGetMethod(true);
if (getMethod != null)
{
getter = DelegatesFactory.CreateGetter(property, getMethod);
}
if (getter is null)
{
return(target => throw new ArgumentException($"No getter for property {Name}."));
}
return(getter);
}
SetterDelegate ConfigureSetter()
{
SetterDelegate setter = null;
MethodInfo setMethod = property.GetSetMethod(true);
if (setMethod != null)
{
setter = DelegatesFactory.CreateSetter(property, setMethod);
}
if (setter is null)
{
return((target, value) => throw new ArgumentException($"No setter for property {Name}."));
}
return(setter);
}
#endregion
}
