StateStart Class Reference

Start state event class. More...

Inheritance diagram for StateStart:

Public Member Functions
	StateStart ()
	Constuctor.
virtual	~StateStart ()
	Destructor.
virtual void	actionEnterState (int nPrefStateId, int nEventId)
	Execute 'enter state' action. More...
Public Member Functions inherited from State2_3Turing
	State2_3Turing (int nStateId, const std::string &strStateName="", const std::string &strRefTag="")
	Initializatoin constuctor. More...
virtual	~State2_3Turing ()
	Destructor.
int	readSymbol ()
void	writeSymbol (int sym)
void	moveHeadLeft ()
	Move head left one position on the tape.
void	moveHeadRight ()
	Move head right one position on the tape.
void	showTape ()
	Show colorized tape to stdout.

Additional Inherited Members
Static Public Attributes inherited from State2_3Turing
static vector< int >	Tape
	the tape of symbols More...
static int	Head
	the tape read/write head

Detailed Description

Start state event class.

The start state is not part of the "official" (2,3) Turing Machine. Rather it is used to (re)initize the tape and then transition to the A state.

Definition at line 354 of file ut-sm.cxx.

Member Function Documentation

virtual void StateStart::actionEnterState ( int  nPrefStateId, int  nEventId  )

inlinevirtual

Execute 'enter state' action.

Parameters

nPrevStateId	Previous state id.
nEventId	Received event id.

Definition at line 375 of file ut-sm.cxx.

References EventIdSymbol.

  {
    Random  rand;
    int     n;
    int     sym;
    size_t  i;

    Tape.clear();

    n = rand.randrange(0, 10);

    printf("\n");

    for(i=0; i<39-n/2; ++i)
    {
      Tape.push_back(EventIdSymbol[0]);
    }

    for(i=0; i<n; ++i)
    {
      Tape.push_back(EventIdSymbol[rand.randrange(0, 2)]);
    }

    for(i=Tape.size(); i<80; ++i)
    {
      Tape.push_back(EventIdSymbol[0]);
    }

    Head = 41;

    showTape();
  }

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The documentation for this class was generated from the following file:

• sw/librnr_appkit/ut/ut-sm.cxx