54 lines
1005 B
Go
54 lines
1005 B
Go
package meta
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const classField = "$id"
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func ReadGeneric(r Reader, createFunc StructFactory, field string) (Readable, error) {
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if err := r.BeginContainer(field); err != nil {
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return nil, err
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}
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size, err := r.ContainerSize()
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if err != nil {
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return nil, err
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}
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if size == 0 {
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if err := r.EndContainer(); err != nil {
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return nil, err
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}
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return nil, nil
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}
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var classId uint32
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if err := r.ReadUint32(&classId, classField); err != nil {
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return nil, err
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}
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s, err := createFunc(classId)
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if err != nil {
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return nil, err
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}
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if err := s.ReadFields(r); err != nil {
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return nil, err
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}
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if err := r.EndContainer(); err != nil {
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return nil, err
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}
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return s, nil
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}
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func WriteGeneric(w Writer, s WritableClass, field string) error {
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if err := w.BeginContainer(s.FieldsCount()+1, field); err != nil {
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return err
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}
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if err := w.WriteUint32(s.ClassId(), classField); err != nil {
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return err
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}
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if err := s.WriteFields(w); err != nil {
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return err
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}
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return w.EndContainer()
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}
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