HitIdHelper Class Reference

#include <HitIdHelper.h>

Inheritance diagram for HitIdHelper:

Collaboration diagram for HitIdHelper:

Public Member Functions
	HitIdHelper ()
virtual	~HitIdHelper ()
void	InitializeField (const std::string &n, int vmn, int vmx)
void	InitializeField (const std::string &n, int nb)
void	SetFieldValue (const std::string &name, int n, HitID &targetID) const
int	GetFieldValue (const std::string &name, HitID targetID) const
void	PrintFields ()

Static Public Member Functions
static void	Print (int id)

Static Protected Member Functions
static void	SetBit (int &i, int bitpos)
static void	UnsetBit (int &i, int bitpos)
static void	Store (int &id, int value, int first, int field)
static int	Retrieve (int id, int first, int field)

Protected Attributes
IdFields	m_IDs
int	m_currentStorage

Detailed Description

Definition at line 23 of file HitIdHelper.h.

Constructor & Destructor Documentation

HitIdHelper()

HitIdHelper::HitIdHelper ( )

inline

Definition at line 25 of file HitIdHelper.h.

: m_currentStorage(0)  {}

~HitIdHelper()

virtual HitIdHelper::~HitIdHelper ( )

inlinevirtual

Definition at line 26 of file HitIdHelper.h.

{}

Member Function Documentation

GetFieldValue()

int HitIdHelper::GetFieldValue	(	const std::string &	name,
		HitID	targetID
	)		const

Definition at line 47 of file HitIdHelper.cxx.

{
  for (unsigned int i=0;i<m_IDs.size();i++)
    {
      if (m_IDs[i].fieldName==name)
        {
          int n=Retrieve(targetID,m_IDs[i].firstBit,m_IDs[i].nBits);
          return n+m_IDs[i].vMin;
        }
    }
  std::cout<<"HitIdHelper: field "<<name<<" not found: returning 0"<<
    std::endl;
  return 0;
}

InitializeField() [1/2]

void HitIdHelper::InitializeField	(	const std::string &	n,
		int	nb
	)

Definition at line 20 of file HitIdHelper.cxx.

{
  int vmn=0;
  int vmx = (1 << nb) - 1;
  IdField id={n,vmn,vmx,nb,m_currentStorage+1};
  m_IDs.push_back(std::move(id));
  m_currentStorage+=nb;
  assert (m_currentStorage<33);
}

InitializeField() [2/2]

void HitIdHelper::InitializeField	(	const std::string &	n,
		int	vmn,
		int	vmx
	)

Definition at line 10 of file HitIdHelper.cxx.

{
  int field = vmx - vmn + 1;
  int nb = std::bit_width(static_cast<unsigned>(field - 1));
  IdField id={n,vmn,vmx,nb,m_currentStorage+1};
  m_IDs.push_back(std::move(id));
  m_currentStorage+=nb;
  assert (m_currentStorage<33);
}

Print()

void HitIdHelper::Print ( int  id )

static

Definition at line 72 of file HitIdHelper.cxx.

{
  for (unsigned int i=0;i<8*sizeof(int);i++)
    {
      if ((id & (1u<<i))) std::cout<<"1";
      else std::cout<<"0";
    }
  std::cout<<std::endl;
}

PrintFields()

void HitIdHelper::PrintFields

(

)

Definition at line 62 of file HitIdHelper.cxx.

{
  for (unsigned int i=0;i<m_IDs.size();i++)
    {
      std::cout<<"-- Field "<<m_IDs[i].fieldName<<"\t["<<m_IDs[i].vMin
               <<","<<m_IDs[i].vMax<<"]\tnBits "<<m_IDs[i].nBits
               <<"\tfirst Bit "<<m_IDs[i].firstBit<<std::endl;
    }
}

Retrieve()

int HitIdHelper::Retrieve ( int  id, int  first, int  field  )

staticprotected

Definition at line 105 of file HitIdHelper.cxx.

{
  int j=0;
  for (int i=0;i<field;i++)
    SetBit(j,(i+first));
  int l=id&j;
  return l>>(first-1);
}

SetBit()

void HitIdHelper::SetBit ( int &  i, int  bitpos  )

staticprotected

Definition at line 82 of file HitIdHelper.cxx.

{
  int l=1;
  l<<=(bitpos-1);
  i|=l;
}

SetFieldValue()

void HitIdHelper::SetFieldValue	(	const std::string &	name,
		int	n,
		HitID &	targetID
	)		const

Definition at line 30 of file HitIdHelper.cxx.

{
  for (unsigned int i=0;i<m_IDs.size();i++)
    {
      if (m_IDs[i].fieldName==name)
        {
          if (n<m_IDs[i].vMin || n>m_IDs[i].vMax)
            std::cout<<"HitIdHelper: field "<<name<<": supplied value "<<n<<
              " is not within the allowed range ["<<m_IDs[i].vMin<<","<<m_IDs[i].vMax
                     <<"] : the result of this action is unpredictable "<<std::endl;
          n-=m_IDs[i].vMin;
          Store(targetID,n,m_IDs[i].firstBit,m_IDs[i].nBits);
          break;
        }
    }
}

Store()

void HitIdHelper::Store ( int &  id, int  value, int  first, int  field  )

staticprotected

Definition at line 96 of file HitIdHelper.cxx.

{
  int l=0;
  for (int i=0;i<field;i++)
    UnsetBit(id,i+firstbit);
  l=value<<(firstbit-1);
  id |= l;
}

UnsetBit()

void HitIdHelper::UnsetBit ( int &  i, int  bitpos  )

staticprotected

Definition at line 88 of file HitIdHelper.cxx.

{
  int l=0;
  SetBit(l,bitpos);
  int k=~l;
  i&=k;
}

Member Data Documentation

m_currentStorage

int HitIdHelper::m_currentStorage

protected

Definition at line 35 of file HitIdHelper.h.

m_IDs

IdFields HitIdHelper::m_IDs

protected

Definition at line 34 of file HitIdHelper.h.

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

• HitIdHelper.h
• HitIdHelper.cxx