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RooMappedCategory.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id: RooMappedCategory.h,v 1.22 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_MAPPED_CATEGORY
17 #define ROO_MAPPED_CATEGORY
18 
19 #include "RooAbsCategory.h"
20 #include "RooCategoryProxy.h"
21 #include <map>
22 #include <string>
23 
24 class TRegexp;
25 class RooMappedCategoryCache;
26 
28 public:
29  static constexpr value_type NoCatIdx = std::numeric_limits<value_type>::min();
30  // Constructors etc.
31 
32  inline RooMappedCategory() : _defCat(0), _mapcache(0) { }
33  RooMappedCategory(const char *name, const char *title, RooAbsCategory& inputCat, const char* defCatName="NotMapped", Int_t defCatIdx=NoCatIdx);
34  RooMappedCategory(const RooMappedCategory& other, const char *name=0) ;
35  virtual TObject* clone(const char* newname) const { return new RooMappedCategory(*this,newname); }
36  virtual ~RooMappedCategory();
37 
38  // Mapping function
39  Bool_t map(const char* inKeyRegExp, const char* outKeyName, Int_t outKeyNum=NoCatIdx) ;
40 
41  // Printing interface (human readable)
42  void printMultiline(std::ostream& os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const ;
43  void printMetaArgs(std::ostream& os) const ;
44 
45  // I/O streaming interface (machine readable)
46  virtual Bool_t readFromStream(std::istream& is, Bool_t compact, Bool_t verbose=kFALSE) ;
47  virtual void writeToStream(std::ostream& os, Bool_t compact) const ;
48 
49 
50  class Entry {
51  public:
52  inline Entry() : _regexp(nullptr), _catIdx() {}
53  virtual ~Entry();
54  Entry(const char* exp, RooAbsCategory::value_type cat);
55  Entry(const Entry& other);
56  bool ok();
57  Bool_t match(const char* testPattern) const;
58  Entry& operator=(const Entry& other);
60  const TRegexp* regexp() const;
61 
62  protected:
63 
64  TString mangle(const char* exp) const ;
65 
67  mutable TRegexp* _regexp{nullptr}; //!
69 
70  ClassDef(Entry, 2) // Map cat entry definition
71  };
72 
73 protected:
74 
75  value_type _defCat{NoCatIdx}; // Default (unmapped) output type
76  RooCategoryProxy _inputCat ; // Input category
77  std::map<std::string,RooMappedCategory::Entry> _mapArray ; // List of mapping rules
78  mutable RooMappedCategoryCache* _mapcache; //! transient member: cache the mapping
79 
80  virtual value_type evaluate() const ;
82 
83  /// When the input category changes states, the cached state mappings are invalidated
84  void recomputeShape();
85 
86  friend class RooMappedCategoryCache;
87 
88  ClassDef(RooMappedCategory, 2) // Index variable, derived from another index using pattern-matching based mapping
89 };
90 
91 #endif
Bool_t match(const char *testPattern) const
const TRegexp * regexp() const
RooMappedCategoryCache * _mapcache
virtual TObject * clone(const char *newname) const
static constexpr value_type NoCatIdx
Regular expression class.
Definition: TRegexp.h:31
Basic string class.
Definition: TString.h:131
Entry & operator=(const Entry &other)
friend class RooMappedCategoryCache
#define ClassDef(name, id)
Definition: Rtypes.h:322
RooAbsCategory::value_type outCat() const
TString mangle(const char *exp) const
Mangle name : escape regexp character &#39;+&#39;.
Bool_t map(const char *inKeyRegExp, const char *outKeyName, Int_t outKeyNum=NoCatIdx)
RooAbsCategory::value_type _catIdx
const RooMappedCategoryCache * getOrCreateCache() const
static void indent(ostringstream &buf, int indent_level)
const Bool_t kFALSE
Definition: RtypesCore.h:90
RooMappedCategory provides a category-to-category mapping defined by pattern matching on their state ...
void printMetaArgs(std::ostream &os) const
Customized printing of arguments of a RooMappedCategory to more intuitively reflect the contents of t...
std::map< std::string, RooMappedCategory::Entry > _mapArray
void recomputeShape()
When the input category changes states, the cached state mappings are invalidated.
virtual Bool_t readFromStream(std::istream &is, Bool_t compact, Bool_t verbose=kFALSE)
Read object contents from stream (dummy for now)
RooCategoryProxy _inputCat
Mother of all ROOT objects.
Definition: TObject.h:37
virtual void writeToStream(std::ostream &os, Bool_t compact) const
Write object contents to ostream.
RooAbsCategory is the base class for objects that represent a discrete value with a finite number of ...
double exp(double)
virtual value_type evaluate() const
transient member: cache the mapping
void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
Print info about this object to the specified stream.
char name[80]
Definition: TGX11.cxx:109