Function readEnumFieldUnsafe

go/fory/struct.go:2779–2813

readEnumFieldUnsafe reads an enum field respecting the field's RefMode. RefMode determines whether null flag is read, regardless of whether the local type is a pointer. This is important for compatible mode where remote TypeDef's nullable flag controls the wire format. Uses context error state for d

(ctx *ReadContext, field *FieldInfo, fieldPtr unsafe.Pointer)

// This is important for compatible mode where remote TypeDef's nullable flag controls the wire format.
// Uses context error state for deferred error checking.
func readEnumFieldUnsafe(ctx *ReadContext, field *FieldInfo, fieldPtr unsafe.Pointer) {
	buf := ctx.Buffer()
	isPointer := field.Kind == FieldKindPointer

	// Read null flag based on RefMode only (not based on whether local type is pointer)
	if field.RefMode != RefModeNone {
		nullFlag := buf.ReadInt8(ctx.Err())
		if nullFlag == NullFlag {
			if isPointer {
				*(*unsafe.Pointer)(fieldPtr) = nil
			} else {
				setEnumValue(ctx, fieldPtr, field.Meta.Type.Kind(), 0)
			}
			return
		}
	}

	ordinal := buf.ReadVarUint32Small7(ctx.Err())
	if ctx.HasError() {
		return
	}

	if isPointer {
		elemType := field.Meta.Type.Elem()
		newVal := reflect.New(elemType)
		elemPtr := unsafe.Pointer(newVal.Pointer())
		if !setEnumValue(ctx, elemPtr, elemType.Kind(), ordinal) {
			return
		}
		*(*unsafe.Pointer)(fieldPtr) = elemPtr
		return
	}

	setEnumValue(ctx, fieldPtr, field.Meta.Type.Kind(), ordinal)
}

// skipStructSerializer is a serializer that skips unknown struct data
// It reads and discards field data based on fieldDefs from remote TypeDef