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RooGenericPdf.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id: RooGenericPdf.h,v 1.20 2007/05/11 09:11:30 verkerke Exp $
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 #ifndef ROO_GENERIC_PDF
17 #define ROO_GENERIC_PDF
18 
19 #include "RooAbsPdf.h"
20 #include "RooFormula.h"
21 #include "RooListProxy.h"
22 
23 class RooArgList ;
24 
25 class RooGenericPdf : public RooAbsPdf {
26 public:
27  // Constructors, assignment etc
28  inline RooGenericPdf(){}
29  RooGenericPdf(const char *name, const char *title, const char* formula, const RooArgList& dependents);
30  RooGenericPdf(const char *name, const char *title, const RooArgList& dependents);
31  RooGenericPdf(const RooGenericPdf& other, const char* name=0);
32  virtual TObject* clone(const char* newname) const { return new RooGenericPdf(*this,newname); }
33 
34  // I/O streaming interface (machine readable)
35  virtual Bool_t readFromStream(std::istream& is, Bool_t compact, Bool_t verbose=kFALSE) ;
36  virtual void writeToStream(std::ostream& os, Bool_t compact) const ;
37 
38  // Printing interface (human readable)
39  void printMultiline(std::ostream& os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const ;
40  void printMetaArgs(std::ostream& os) const ;
41 
42  // Debugging
43  void dumpFormula() { formula().dump() ; }
44 
45 protected:
46 
47  RooFormula& formula() const ;
48 
49  // Function evaluation
51  virtual Double_t evaluate() const ;
52 
53  Bool_t setFormula(const char* formula) ;
54 
55  // Post-processing of server redirection
56  virtual Bool_t redirectServersHook(const RooAbsCollection& newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive) ;
57 
58  virtual Bool_t isValidReal(Double_t value, Bool_t printError) const ;
59 
60  std::unique_ptr<RooFormula> _formula{nullptr}; //! Formula engine
61  TString _formExpr ; // Formula expression string
62 
63  ClassDef(RooGenericPdf,1) // Generic PDF defined by string expression and list of variables
64 };
65 
66 #endif
void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
Print info about this object to the specified stream.
virtual Bool_t isValidReal(Double_t value, Bool_t printError) const
Check if given value is valid.
Basic string class.
Definition: TString.h:131
std::unique_ptr< RooFormula > _formula
Definition: RooGenericPdf.h:60
virtual void writeToStream(std::ostream &os, Bool_t compact) const
Write object contents to given stream.
RooListProxy _actualVars
Definition: RooGenericPdf.h:50
TString _formExpr
Formula engine.
Definition: RooGenericPdf.h:61
#define ClassDef(name, id)
Definition: Rtypes.h:322
RooFormula internally uses ROOT&#39;s TFormula to compute user-defined expressions of RooAbsArgs...
Definition: RooFormula.h:28
void printMetaArgs(std::ostream &os) const
Add formula expression as meta argument in printing interface.
RooFormula & formula() const
static void indent(ostringstream &buf, int indent_level)
RooListProxy is the concrete proxy for RooArgList objects.
Definition: RooListProxy.h:25
virtual Double_t evaluate() const
Calculate current value of this object.
const Bool_t kFALSE
Definition: RtypesCore.h:90
void dump() const
DEBUG: Dump state information.
Definition: RooFormula.cxx:293
virtual Bool_t readFromStream(std::istream &is, Bool_t compact, Bool_t verbose=kFALSE)
Read object contents from given stream.
void dumpFormula()
Definition: RooGenericPdf.h:43
Mother of all ROOT objects.
Definition: TObject.h:37
RooAbsCollection is an abstract container object that can hold multiple RooAbsArg objects...
RooAbsPdf, the base class of all PDFs
Definition: RooAbsPdf.h:40
virtual Bool_t redirectServersHook(const RooAbsCollection &newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive)
Propagate server changes to embedded formula object.
Bool_t setFormula(const char *formula)
Change formula expression to given expression.
RooGenericPdf is a concrete implementation of a probability density function, which takes a RooArgLis...
Definition: RooGenericPdf.h:25
virtual TObject * clone(const char *newname) const
Definition: RooGenericPdf.h:32
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:21
char name[80]
Definition: TGX11.cxx:109