PhysicsTools::AtomicId Class Reference

Cheap generic unique keyword identifier class. More...

#include <AtomicId.h>

Public Member Functions
	AtomicId () throw ()
	AtomicId (const AtomicId &orig) throw ()
	AtomicId (const char *arg) throw ()
	constructs an AtomicId from a C string More...
	AtomicId (const std::string &arg) throw ()
	constructs an AtomicId from a STL string More...
	operator bool () const throw ()
	null value check operator More...
	operator const char * () const throw ()
	implicit cast to a C string More...
	operator std::string () const throw ()
	implicit cast to a STL string More...
bool	operator!= (const AtomicId &second) const throw ()
bool	operator< (const AtomicId &second) const throw ()
bool	operator<= (const AtomicId &second) const throw ()
AtomicId &	operator= (const AtomicId &orig) throw ()
bool	operator== (const AtomicId &second) const throw ()
bool	operator> (const AtomicId &second) const throw ()
bool	operator>= (const AtomicId &second) const throw ()
	~AtomicId () throw ()

Static Private Member Functions
static AtomicId	build (const char *arg) throw ()
static const char *	lookup (const char *arg) throw ()

Private Attributes
const char *	string

Detailed Description

Cheap generic unique keyword identifier class.

AtomicId is a lightweight class intended to be used for key values e.g. in STL maps. An atomic identifier can be transparently constructed from and converted back to a string, but an instance of AtomicId does not occupy and additional memory and the comparator operators are very cheap. An AtomicId instance requires the size of a pointer and is therefore suited for direct inlining.

Definition at line 31 of file AtomicId.h.

Constructor & Destructor Documentation

AtomicId() [1/4]

PhysicsTools::AtomicId::AtomicId ( ) throw ( )

inline

Definition at line 33 of file AtomicId.h.

: string(nullptr) {}

AtomicId() [2/4]

PhysicsTools::AtomicId::AtomicId ( const AtomicId &  orig ) throw ( )

inline

Definition at line 34 of file AtomicId.h.

: string(orig.string) {}

AtomicId() [3/4]

PhysicsTools::AtomicId::AtomicId ( const char *  arg ) throw ( )

inline

constructs an AtomicId from a C string

Definition at line 36 of file AtomicId.h.

: string(lookup(arg)) {}

AtomicId() [4/4]

PhysicsTools::AtomicId::AtomicId ( const std::string &  arg ) throw ( )

inline

constructs an AtomicId from a STL string

Definition at line 38 of file AtomicId.h.

: string(lookup(arg.c_str())) {}

~AtomicId()

PhysicsTools::AtomicId::~AtomicId ( ) throw ( )

inline

Definition at line 39 of file AtomicId.h.

{}

Member Function Documentation

build()

static AtomicId PhysicsTools::AtomicId::build ( const char *  arg ) throw ( )

inlinestaticprivate

Definition at line 63 of file AtomicId.h.

                                                   {
      AtomicId q;
      q.string = arg;
      return q;
    }

References data-class-funcs::q.

lookup()

const char * PhysicsTools::AtomicId::lookup ( const char *  arg ) throw ( )

staticprivate

Definition at line 59 of file AtomicId.cc.

                                                         {
    if (string)
      return getAtomicIdCache().findOrInsert(string);
 
    return nullptr;
  }

References PhysicsTools::getAtomicIdCache().

operator bool()

PhysicsTools::AtomicId::operator bool ( ) const throw ( )

inline

null value check operator

Definition at line 50 of file AtomicId.h.

{ return string != nullptr; }

operator const char *()

PhysicsTools::AtomicId::operator const char * ( ) const throw ( )

inline

implicit cast to a C string

Definition at line 47 of file AtomicId.h.

{ return string; }

References string.

operator std::string()

PhysicsTools::AtomicId::operator std::string ( ) const throw ( )

inline

implicit cast to a STL string

Definition at line 53 of file AtomicId.h.

{ return std::string(string); }

References AlCaHLTBitMon_QueryRunRegistry::string.

operator!=()

bool PhysicsTools::AtomicId::operator!= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 56 of file AtomicId.h.

{ return string != second.string; }

References edm::second().

operator<()

bool PhysicsTools::AtomicId::operator< ( const AtomicId &  second ) const throw ( )

inline

Definition at line 57 of file AtomicId.h.

{ return string < second.string; }

References edm::second().

operator<=()

bool PhysicsTools::AtomicId::operator<= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 58 of file AtomicId.h.

{ return string <= second.string; }

References edm::second().

operator=()

AtomicId& PhysicsTools::AtomicId::operator= ( const AtomicId &  orig ) throw ( )

inline

Definition at line 41 of file AtomicId.h.

                                                             {
      string = orig.string;
      return *this;
    }

References string.

operator==()

bool PhysicsTools::AtomicId::operator== ( const AtomicId &  second ) const throw ( )

inline

Definition at line 55 of file AtomicId.h.

{ return string == second.string; }

References edm::second().

operator>()

bool PhysicsTools::AtomicId::operator> ( const AtomicId &  second ) const throw ( )

inline

Definition at line 59 of file AtomicId.h.

{ return string > second.string; }

References edm::second().

operator>=()

bool PhysicsTools::AtomicId::operator>= ( const AtomicId &  second ) const throw ( )

inline

Definition at line 60 of file AtomicId.h.

{ return string >= second.string; }

References edm::second().

Member Data Documentation

string

const char* PhysicsTools::AtomicId::string

private

Definition at line 70 of file AtomicId.h.

Referenced by operator const char *(), and operator=().