# NPC core

```plantuml
abstract class ARepository
abstract class ARepositoryFactory
class RepositoryFactory
class Repository {
  +addStructure()
  +removeStructure()
  +getStructure()
}

abstract class AStackModelFactory
class StackModelFactory

abstract class AStackModel
class StackModel {
  +getBinary():byte[]
  +getStructures():Structure[]
  +addStructure()
  +removeStructure()
}

abstract class AStructureFactory
class StructureFactory
abstract class AStructure
class Structure {
  -name
  -description
  -fields
  -data
  +putData(Field, data)
  +validateData(Field, data)
  +updateData()
}

abstract class AFieldFactory{
+ createField()
+ createFieldBinaryInformation()
+ createFieldLogicalInformation()
+ createFieldVisualInformation()
+ createFieldRepresentation()
}
class FieldFactory
abstract class AField
class Field {
  - owningStructure
  - binary
  - logical
  - visual
  - representation
}

class RandomAccessBinary {
  - binaryData
  + setBytes(uint position, std::vector<uint8_t> data)
+ setByte(uint position, uint8_t data)

+ setBit(uint64_t position, bool value)
+ setBit(uint bytePosition, uint bitPosition, bool value)
+ setBits(uint64_t position, uint bits, uint value)
+ setBits(uint bytePosition, uint bitPosition, uint bits, uint value)

+ getByte(uint position)
+ getBytes(uint position, uint bytes)

+ getBit(uint64_t position)
+ getBit(uint bytePosition, uint bitPosition)
+ getBits(uint64_t position, uint bits)
+ getBits(uint bytePosition, uint bitPosition, uint bits)

+ get_uint32(uint position)
+ get_uint16(uint position)
+ get_uint64(uint position)
+ get_float(uint position)
+ get_double(uint position)

+ get_string(uint position, uint length)

+ get_hex_string(uint position, uint length)
+ get_hex_string()
}

ARepositoryFactory <|-- RepositoryFactory
ARepository <|-- Repository
RepositoryFactory --> Repository : creates >

AStackModelFactory <|-- StackModelFactory
AStackModel <|-- StackModel
StackModelFactory --> StackModel: creates >

AStructureFactory <|-- StructureFactory
AStructure <|-- Structure
StructureFactory --> Structure : creates >
StackModel *-- Structure
Repository *-- Structure

AFieldFactory <|-- FieldFactory
AField <|-- Field
FieldFactory --> Field : creates >

Structure *-- Field

StackModel *-- "1" RandomAccessBinary

```