RooFormula

class description - source file - inheritance tree (.pdf)

class RooFormula : public TFormula, public RooPrintable

Inheritance Chart:

TObject

TNamed

TFormula

RooPrintable

RooFormula


    protected:

      virtual Double_t DefinedValue(Int_t code)
         virtual Int_t DefinedVariable(TString& name, int& action)
                 Int_t DefinedVariable(TString& name)
                  void initCopy(const RooFormula& other)
           RooFormula& operator=(const RooFormula& other)

    public:

                       RooFormula()
                       RooFormula(const char* name, const char* formula, const RooArgList& varList)
                       RooFormula(const RooFormula& other, const char* name = "0")
               virtual ~RooFormula()
            RooArgSet& actualDependents() const
                Bool_t changeDependents(const RooAbsCollection& newDeps, Bool_t mustReplaceAll, Bool_t nameChange)
        static TClass* Class()
      virtual TObject* Clone(const char* newName = "0") const
                  void dump()
              Double_t eval(const RooArgSet* nset = 0)
            RooAbsArg* getParameter(const char* name) const
            RooAbsArg* getParameter(Int_t index) const
       virtual TClass* IsA() const
                Bool_t ok()
          virtual void Print(Option_t* options = "0") const
          virtual void printToStream(ostream& os, RooPrintable::PrintOption opt = Standard, TString indent = ) const
                Bool_t reCompile(const char* newFormula)
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)

Data Members


    protected:

         RooArgSet* _nset       
             Bool_t _isOK       
      RooLinkedList _origList   ! Original list of dependents
      RooLinkedList _useList    ! List of actual dependents 
          RooArgSet _actual     ! Set of actual dependents
      RooLinkedList _labelList  List of label names for category objects  
             Bool_t _compiled   Flag set if formula is compiled

Class Description

 RooFormula is the RFC extension of TFormula. It allows to use
 the value of a given list of RooAbsArg objects in the formula
 expression. Reference is done either by the RooAbsArgs name
 or by list ordinal postion ('@0,@1,...'). State information
 of RooAbsCategories can be accessed used the '::' operator,
 e.g. 'tagCat::Kaon' will resolve to the numerical value of
 the Kaon state of the RooAbsCategory object named tagCat.

RooFormula() : TFormula(), _nset(0)

 Dummy constructor

RooFormula(const char* name, const char* formula, const RooArgList& list) : TFormula(), _isOK(kTRUE), _compiled(kFALSE)

 Constructor with expression string and list of variables

RooFormula(const RooFormula& other, const char* name) : TFormula(), RooPrintable(other), _isOK(other._isOK), _compiled(kFALSE)

 Copy constructor

Bool_t reCompile(const char* newFormula)

 Recompile formula with new expression

~RooFormula()

 Destructor

RooArgSet& actualDependents() const

void dump()

 DEBUG: Dump state information

Bool_t changeDependents(const RooAbsCollection& newDeps, Bool_t mustReplaceAll, Bool_t nameChange)

 Change used variables to those with the same name in given list

Double_t eval(const RooArgSet* nset)

 Return current value of formula

DefinedValue(Int_t code)

 Return current value for variable indicated by internal reference code

DefinedVariable(TString &name, int& action)

DefinedVariable(TString &name)

 Check if a variable with given name is available

void printToStream(ostream& os, PrintOption opt, TString indent) const

 Print info about this argument set to the specified stream.

   OneLine: use RooPrintable::oneLinePrint()
  Standard: our formula
   Verbose: formula and list of actual dependents

Inline Functions

           TObject* Clone(const char* newName = "0") const
         RooAbsArg* getParameter(const char* name) const
         RooAbsArg* getParameter(Int_t index) const
             Bool_t ok()
               void Print(Option_t* options = "0") const
        RooFormula& operator=(const RooFormula& other)
               void initCopy(const RooFormula& other)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)

Last CVS Update: v 1.55 2005/12/01 16:10:20 wverkerke

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