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 // Settings.h is a part of the PYTHIA event generator.
 // Copyright (C) 2024 Torbjorn Sjostrand.
 // PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details.
 // Please respect the MCnet Guidelines, see GUIDELINES for details.
 
 // Header file for the settings database.
 // Flag: helper class with bool flags.
 // Mode: helper class with int modes.
 // Parm: (short for parameter) helper class with double parameters.
 // Word: helper class with string words.
 // FVec: vector of Flags (bools).
 // MVec: vector of Modes (integers).
 // PVec: vector of Parms (doubles).
 // WVec: vector of Words (strings).
 // Settings: maps of flags, modes, parms and words with input/output.
 
 #ifndef Pythia8_Settings_H
 #define Pythia8_Settings_H
 
 #include "Pythia8/Logger.h"
 #include "Pythia8/PythiaStdlib.h"
 
 namespace Pythia8 {
 
 //==========================================================================
 
 // Class for bool flags.
 
 class Flag {
 
 public:
 
   // Constructor
   Flag(string nameIn = " ", bool defaultIn = false) : name(nameIn),
     valNow(defaultIn) , valDefault(defaultIn) { }
 
   // Data members.
   string name;
   bool   valNow, valDefault;
 
 };
 
 //==========================================================================
 
 // Class for integer modes.
 
 class Mode {
 
 public:
 
   // Constructor
   Mode(string nameIn = " ", int defaultIn = 0, bool hasMinIn = false,
     bool hasMaxIn = false, int minIn = 0,  int maxIn = 0,
     bool optOnlyIn = false) :  name(nameIn), valNow(defaultIn),
     valDefault(defaultIn), hasMin(hasMinIn), hasMax(hasMaxIn),
     valMin(minIn), valMax(maxIn), optOnly(optOnlyIn)  { }
 
   // Data members.
   string name;
   int    valNow, valDefault;
   bool   hasMin, hasMax;
   int    valMin, valMax;
   bool   optOnly;
 
 };
 
 //==========================================================================
 
 // Class for double parms (where parm is shorthand for parameter).
 
 class Parm {
 
 public:
 
   // Constructor
   Parm(string nameIn = " ", double defaultIn = 0.,
     bool hasMinIn = false, bool hasMaxIn = false, double minIn = 0.,
     double maxIn = 0.) :  name(nameIn), valNow(defaultIn),
     valDefault(defaultIn), hasMin(hasMinIn), hasMax(hasMaxIn),
     valMin(minIn), valMax(maxIn) { }
 
   // Data members.
   string name;
   double valNow, valDefault;
   bool   hasMin, hasMax;
   double valMin, valMax;
 
 };
 
 //==========================================================================
 
 // Class for string words.
 
 class Word {
 
 public:
 
   // Constructor
   Word(string nameIn = " ", string defaultIn = " ") : name(nameIn),
     valNow(defaultIn) , valDefault(defaultIn) { }
 
   // Data members.
   string name, valNow, valDefault;
 
 };
 
 //==========================================================================
 
 // Class for vector of bool flags.
 
 class FVec {
 
 public:
 
   // Constructor
   FVec(string nameIn = " ", vector<bool> defaultIn = vector<bool>(1, false)) :
     name(nameIn), valNow(defaultIn) , valDefault(defaultIn) { }
 
   // Data members.
   string name;
   vector<bool> valNow, valDefault;
 
 };
 
 //==========================================================================
 
 // Class for vector of integers.
 
 class MVec {
 
 public:
 
   // Constructor
   MVec(string nameIn = " ", vector<int> defaultIn = vector<int>(1, 0),
     bool hasMinIn = false, bool hasMaxIn = false, int minIn = 0,
     int maxIn = 0) :  name(nameIn), valNow(defaultIn),
     valDefault(defaultIn), hasMin(hasMinIn), hasMax(hasMaxIn),
     valMin(minIn), valMax(maxIn) { }
 
   // Data members.
   string name;
   vector<int> valNow, valDefault;
   bool   hasMin, hasMax;
   int    valMin, valMax;
 
 };
 
 //==========================================================================
 
 // Class for vector of doubles.
 
 class PVec {
 
 public:
 
   // Constructor
   PVec(string nameIn = " ", vector<double> defaultIn = vector<double>(1, 0.),
     bool hasMinIn = false, bool hasMaxIn = false, double minIn = 0.,
     double maxIn = 0.) :  name(nameIn), valNow(defaultIn),
     valDefault(defaultIn), hasMin(hasMinIn), hasMax(hasMaxIn),
     valMin(minIn), valMax(maxIn) { }
 
   // Data members.
   string name;
   vector<double> valNow, valDefault;
   bool   hasMin, hasMax;
   double valMin, valMax;
 
 };
 
 //==========================================================================
 
 // Class for vector of strings.
 
 class WVec {
 
 public:
 
   // Constructor
   WVec(string nameIn = " ", vector<string> defaultIn = vector<string>(1, " "))
     : name(nameIn), valNow(defaultIn) , valDefault(defaultIn) { }
 
   // Data members.
   string name;
   vector<string> valNow, valDefault;
 
 };
 
 //==========================================================================
 
 // This class holds info on flags (bool), modes (int), parms (double),
 // words (string), fvecs (vector of bool), mvecs (vector of int),
 // pvecs (vector of double) and wvecs (vector of string).
 
 class Settings {
 
 public:
 
   // Constructor.
   Settings() : loggerPtr(), isInit(false), readingFailedSave(false),
     lineSaved(false) {}
 
   // Initialize Logger pointer.
   void initPtrs(Logger* loggerPtrIn) {loggerPtr = loggerPtrIn;}
 
   // Read in database from specific file.
   bool init(string startFile = "../share/Pythia8/xmldoc/Index.xml",
     bool append = false) ;
 
   // Read in database from stream.
   bool init(istream& is, bool append = false) ;
 
   // Overwrite existing database by reading from specific file.
   bool reInit(string startFile = "../share/Pythia8/xmldoc/Index.xml") ;
 
   // Read in one update from a single line.
   bool readString(string line, bool warn = true) ;
 
   // Register the settings from a plugin library.
   bool registerPluginLibrary(string libName, string startFile = "");
 
   // Write updates or everything to user-defined file or to stream.
   bool writeFile(string toFile, bool writeAll = false) ;
   bool writeFile(ostream& os = cout, bool writeAll = false) ;
   bool writeFileXML(ostream& os = cout) ;
 
   // Print out table of database, either all or only changed ones,
   // or ones containing a given string.
   void listAll() { list( true, false, " "); }
   void listChanged() { list (false, false, " "); }
   void list(string match) { list (false, true, match); }
 
   // Give back current value(s) as a string, whatever the type.
   string output(string keyIn, bool fullLine = true);
 
   // Retrieve readString history (e.g., for inspection). Everything
   // (subrun=-999), up to first subrun (=-1), or subrun-specific (>=0).
   vector<string> getReadHistory(int subrun=-999) {
     if (subrun == -999) return readStringHistory;
     else if (readStringSubrun.find(subrun) != readStringSubrun.end())
       return readStringSubrun[subrun];
     else return vector<string>();
   }
 
   // Reset all values to their defaults.
   void resetAll() ;
 
   // Query existence of an entry.
   bool isFlag(string keyIn) {
     return (flags.find(toLower(keyIn)) != flags.end()); }
   bool isMode(string keyIn) {
     return (modes.find(toLower(keyIn)) != modes.end()); }
   bool isParm(string keyIn) {
     return (parms.find(toLower(keyIn)) != parms.end()); }
   bool isWord(string keyIn) {
     return (words.find(toLower(keyIn)) != words.end()); }
   bool isFVec(string keyIn) {
     return (fvecs.find(toLower(keyIn)) != fvecs.end()); }
   bool isMVec(string keyIn) {
     return (mvecs.find(toLower(keyIn)) != mvecs.end()); }
   bool isPVec(string keyIn) {
     return (pvecs.find(toLower(keyIn)) != pvecs.end()); }
   bool isWVec(string keyIn) {
     return (wvecs.find(toLower(keyIn)) != wvecs.end()); }
 
   // Add new entry.
   void addFlag(string keyIn, bool defaultIn) {
     flags[toLower(keyIn)] = Flag(keyIn, defaultIn); }
   void addMode(string keyIn, int defaultIn, bool hasMinIn,
     bool hasMaxIn, int minIn, int maxIn, bool optOnlyIn = false) {
     modes[toLower(keyIn)] = Mode(keyIn, defaultIn, hasMinIn, hasMaxIn,
     minIn, maxIn, optOnlyIn); }
   void addParm(string keyIn, double defaultIn, bool hasMinIn,
     bool hasMaxIn, double minIn, double maxIn) { parms[toLower(keyIn)]
     = Parm(keyIn, defaultIn, hasMinIn, hasMaxIn, minIn, maxIn); }
   void addWord(string keyIn, string defaultIn) {
     words[toLower(keyIn)] = Word(keyIn, defaultIn); }
   void addFVec(string keyIn, vector<bool> defaultIn) {
     fvecs[toLower(keyIn)] = FVec(keyIn, defaultIn); }
   void addMVec(string keyIn, vector<int> defaultIn, bool hasMinIn,
     bool hasMaxIn, int minIn, int maxIn) { mvecs[toLower(keyIn)]
     = MVec(keyIn, defaultIn, hasMinIn, hasMaxIn, minIn, maxIn); }
    void addPVec(string keyIn, vector<double> defaultIn, bool hasMinIn,
     bool hasMaxIn, double minIn, double maxIn) { pvecs[toLower(keyIn)]
     = PVec(keyIn, defaultIn, hasMinIn, hasMaxIn, minIn, maxIn); }
   void addWVec(string keyIn, vector<string> defaultIn) {
     wvecs[toLower(keyIn)] = WVec(keyIn, defaultIn); }
 
   // Give back current value, with check that key exists.
   bool   flag(string keyIn);
   int    mode(string keyIn);
   double parm(string keyIn);
   string word(string keyIn);
   vector<bool>   fvec(string keyIn);
   vector<int>    mvec(string keyIn);
   vector<double> pvec(string keyIn);
   vector<string> wvec(string keyIn);
 
   // Give back default value, with check that key exists.
   bool   flagDefault(string keyIn);
   int    modeDefault(string keyIn);
   double parmDefault(string keyIn);
   string wordDefault(string keyIn);
   vector<bool>   fvecDefault(string keyIn);
   vector<int>    mvecDefault(string keyIn);
   vector<double> pvecDefault(string keyIn);
   vector<string> wvecDefault(string keyIn);
 
   // Give back a map of all entries whose names match the string "match".
   map<string, Flag> getFlagMap(string match);
   map<string, Mode> getModeMap(string match);
   map<string, Parm> getParmMap(string match);
   map<string, Word> getWordMap(string match);
   map<string, FVec> getFVecMap(string match);
   map<string, MVec> getMVecMap(string match);
   map<string, PVec> getPVecMap(string match);
   map<string, WVec> getWVecMap(string match);
 
   // Change current value, respecting limits.
   void flag(string keyIn, bool nowIn, bool force = false);
   bool mode(string keyIn, int nowIn, bool force = false);
   bool parm(string keyIn, double nowIn, bool force = false);
   void word(string keyIn, string nowIn, bool force = false);
   void fvec(string keyIn, vector<bool> nowIn, bool force = false);
   bool mvec(string keyIn, vector<int> nowIn, bool force = false);
   bool pvec(string keyIn, vector<double> nowIn, bool force = false);
   void wvec(string keyIn, vector<string> nowIn, bool force = false);
 
   // Methods kept for backwards compatability with 8.223 and earlier.
   // (To be removed in next major release.)
   void forceMode(string keyIn, int nowIn) {mode(keyIn,nowIn,true);}
   void forceParm(string keyIn, double nowIn) {parm(keyIn,nowIn,true);}
   void forceMVec(string keyIn, vector<int> nowIn) {mvec(keyIn,nowIn,true);}
   void forcePVec(string keyIn, vector<double> nowIn) {pvec(keyIn,nowIn,true);}
 
   // Restore current value to default.
   void resetFlag(string keyIn);
   void resetMode(string keyIn);
   void resetParm(string keyIn);
   void resetWord(string keyIn);
   void resetFVec(string keyIn);
   void resetMVec(string keyIn);
   void resetPVec(string keyIn);
   void resetWVec(string keyIn);
 
   // Check initialisation status.
   bool getIsInit() {return isInit;}
 
   // Keep track whether any readings have failed, invalidating run setup.
   bool readingFailed() {return readingFailedSave;}
 
   // Check whether input openend with { not yet closed with }.
   bool unfinishedInput() {return lineSaved;}
 
   // Check whether processes other than SoftQCD/LowEnergyQCD are switched on.
   bool hasHardProc();
 
  private:
 
   // Pointer to logger.
   Logger* loggerPtr;
 
   // Map for bool flags.
   map<string, Flag> flags;
 
   // Map for integer modes.
   map<string, Mode> modes;
 
   // Map for double parms.
   map<string, Parm> parms;
 
   // Map for string words.
   map<string, Word> words;
 
   // Map for vectors of bool.
   map<string, FVec> fvecs;
 
   // Map for vectors of int.
   map<string, MVec> mvecs;
 
   // Map for vectors of double.
   map<string, PVec> pvecs;
 
   // Map for vectors of string.
   map<string, WVec> wvecs;
 
   // Set of loaded plugin libraries.
   set<string> pluginLibraries;
 
   // Flags that initialization has been performed; whether any failures.
   bool isInit, readingFailedSave;
 
   // Store temporary line when searching for continuation line.
   bool   lineSaved;
   string savedLine;
 
   // Stored history of readString statements (common and by subrun).
   vector<string> readStringHistory;
   map<int, vector<string> > readStringSubrun;
 
   // Print out table of database, called from listAll and listChanged.
   void list(bool doListAll, bool doListString, string match);
 
   // Master switch for program printout.
   void printQuiet(bool quiet);
 
   // Restore settings used in tunes to e+e- and pp/ppbar data.
   void resetTuneEE();
   void resetTunePP();
 
   // Initialize tunes to e+e- and pp/ppbar data.
   void initTuneEE(int eeTune);
   void initTunePP(int ppTune);
 
   // Useful functions for string handling.
   bool   boolString(string tag);
   string attributeValue(string line, string attribute);
   bool   boolAttributeValue(string line, string attribute);
   int    intAttributeValue(string line, string attribute);
   double doubleAttributeValue(string line, string attribute);
   vector<bool>   boolVectorAttributeValue(string line, string attribute);
   vector<int>    intVectorAttributeValue(string line, string attribute);
   vector<double> doubleVectorAttributeValue(string line, string attribute);
   vector<string> stringVectorAttributeValue(string line, string attribute);
 
 };
 
 //==========================================================================
 
 } // end namespace Pythia8
 
 #endif // Pythia8_Settings_H

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