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Class Byteline

Class Byteline. Ustyugov Dmitry MDSP November, 2009. Class Byteline. Class Byteline implemented in memory.h Is used to manipulate with entire byte combinations - bytelines. Has its own private section Methods and overloaded operators. Contents. Private section and variables

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Class Byteline

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  1. ClassByteline Ustyugov Dmitry MDSP November, 2009

  2. ClassByteline • Class Byteline implemented in memory.h • Is used to manipulate with entire byte combinations - bytelines. • Has its own private section • Methods and overloaded operators MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  3. Contents • Private section and variables • Constructors and destructors • Methods and overloaded operators • Overloaded operators MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  4. Private section and variables private: vector<Byte> *byte_line; // pointer to vector of //Bytes MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  5. Constructors • ByteLine(); • Creates empty object of Byteline class ... Byteline example; // an empty object created ... • ByteLine( unsigned int); • Creates object of Byteline classwith count Byte, initializing with null bytes ... Byteline example( 5); // object consisting 5 null bytes created ... MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  6. Constructors MDSP project, Intel Lab, Moscow Institute of Physics and Technology • ByteLine( const ByteLine&); • Copy constructor ... Byteline copy( example); // another object equal to the // previous one ... • ByteLine( const Byte&); • Conversion constructors Byte in ByteLine ... Byteline now_it_is_bl; // object consisting 5 null bytes //created ...

  7. Destructor MDSP project, Intel Lab, Moscow Institute of Physics and Technology virtual ~ByteLine() { delete byte_line; }

  8. Methods: get/set methods MDSP project, Intel Lab, Moscow Institute of Physics and Technology hostUInt8 getByteVal( unsigned int) const; Byte getByte( unsigned int) const; void setByte( unsigned int, const Byte&);

  9. Methods: hostUInt8 getByteVal( unsigned int) const; • The constant member function. Returns the value ofthe Byte at position pos in the ByteLine.If thatposition is invalid, recalls exception ... // example.byteline is equal to 00001010|10000000 example.getByteVal( 1) = 10; ... MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  10. Methods: get/setByte • Byte getByte( unsigned int) const; • Returns theobject of class Byte at position pos in the ByteLine.If that position is invalid, recalls exception ... (example_byteline: byte2|byte1|byte0|) example_byteline.getByte( 1) = byte1; ... • void setByte( unsigned int, const Byte&); • Stores the object of class Byte at position pos inthe ByteLine.If that position is invalid,recalls exception ... (before: example_byteline: byte2|byte1|byte0|) Example.setByte( 2, newByte); (after: example_byteline: newByte|byte1|byte0|) ... MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  11. Utility functions • void addByte( const Byte&); • Adds object of Byte class to end of ByteLine ... (before: example: byte2|byte1|) example.addByte( byte3); (after: example: byte3|byte2|byte1|) ... • void resizeByteLine( unsigned int); • Resize of ByteLine on count. New member of ByteLine is null bytes ... (before: example: 01111000|01010101|) example.resizeByteLine( 3) // result: 01111000|01010101|00000000| ... • unsigned int getSizeOfLine() const • The constant member function. Return size of Byteline MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  12. Overloaded operators • ByteLine& operator = ( const ByteLine&); • Assign the current object of ByteLine class to another • Byte operator[] ( unsigned int) const; • The constant member function.The member function returns an object ofclass reference. • Returns the Byte at position pos in the ByteLine.If position is invalid, recalls exception • inline ByteLine operator<< ( const ByteLine& byteline, int count); • Shifts bytes in the byteline left with the count of bytes • inline ByteLine operator>> ( const ByteLine& byteline, int count); • Shifts bytes in the byteline right with the count of bytes MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  13. Overloaded Operators: << and >> • inline ByteLine operator<< ( const ByteLine& byteline, int count); • Shifts bytes in the byteline left with the count of bytes ... (before: example: 01010101|00100100|) example << 3; (after: example: 01010100|10010000|) ... • inline ByteLine operator>> ( const ByteLine& byteline, int count); • Shifts bytes in the byteline right with the count of bytes ... (before: example: 01010101|00100100|) example >> 3; (after: example: 00001010|10100100|) MDSP project, Intel Lab, Moscow Institute of Physics and Technology

  14. Friendly operators • friend ostream& operator<< ( ostream&, const ByteLine&); • Outputs the ByteLine in bin form to screen • friend ByteLine operator+ ( const ByteLine&, const ByteLine&); • Returns the ByteLine to be a result of addition of two objects of class reference ... (example1: 01010101|10001000|, example: 00100001|00001111|) example = example1 + example2 (example: 01010101|10001000|00100001|00001111|) ... MDSP project, Intel Lab, Moscow Institute of Physics and Technology

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