+++ /dev/null
-//-----------------------------------------------------------------------
-// File and Version Information:
-// $Id: EvtMultiChannelParser.cpp,v 1.4 2009-03-16 15:46:01 robbep Exp $
-//
-// Environment:
-// This software is part of the EvtGen package developed jointly
-// for the BaBar and CLEO collaborations. If you use all or part
-// of it, please give an appropriate acknowledgement.
-//
-// Copyright Information:
-// Copyright (C) 1998 Caltech, UCSB
-//
-// Module creator:
-// Alexei Dvoretskii, Caltech, 2001-2002.
-//-----------------------------------------------------------------------
-#include "EvtGenBase/EvtPatches.hh"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <string>
-#include <vector>
-#include "EvtGenBase/EvtParser.hh"
-#include "EvtGenBase/EvtMultiChannelParser.hh"
-#include "EvtGenBase/EvtDecayMode.hh"
-#include "EvtGenBase/EvtPDL.hh"
-
-using std::string;
-using std::vector;
-
-EvtDecayMode EvtMultiChannelParser::getDecayMode(const char* file)
-{
- // Open file, read tokens
-
- EvtParser parser;
- parser.read(file);
-
- // Seek Decay
-
- int i = 0;
- int N = parser.getNToken();
- while(i<N) {
-
- std::string tok = parser.getToken(i++);
- if(tok == std::string("Decay")) break;
- }
-
- // Get mother
-
- string mother = string(parser.getToken(i++).c_str());
- std::string bf = parser.getToken(i++);
-
- vector<string> dauV;
- // Get daughters
-
- while(1) {
-
- std::string d = parser.getToken(i++);
-
- if(EvtPDL::getStdHep(EvtPDL::getId(d.c_str())) == 0) break;
-
- dauV.push_back(string(d.c_str()));
- }
-
- EvtDecayMode mode(mother,dauV);
- printf("Decay File defines mode %s\n",mode.mode().c_str());
-
- return mode;
-}
-
-
-
-void EvtMultiChannelParser::parse(const char* file, const char* model)
-{
- // Open file, read tokens
-
- EvtParser parser;
- parser.read(file);
-
-
- // Get parameters (tokens between the model name and ;)
-
- int i = 0;
- int N = parser.getNToken();
-
- // Seek the model name
-
- while(i<N) {
-
- std::string tok = parser.getToken(i++);
- if(tok == std::string(model)) break;
- }
- if(i == N) {
-
- printf("No model %s found in decay file %s",model,file);
- exit(0);
- }
-
-
- // Add all tokens up to a semicolon to vector
-
- std::vector<std::string> v;
- while(i<N) {
-
- std::string tok = parser.getToken(i++);
- if(tok == std::string(";")) break;
- else v.push_back(tok);
- }
-
- if(i == N) {
-
- printf("No terminating ; found in decay file %s",file);
- assert(0);
- }
-
- parse(v);
-}
-
-
-void EvtMultiChannelParser::parse(const std::vector<std::string>& v)
-{
- // place holder for strtod
- char** tc = 0;
-
-
- // Get PDF maximum or number of points to
- // use in the scan.
-
- if(v[0] == std::string("MAXPDF")) {
-
- _pdfMax = strtod(v[1].c_str(),tc);
- if(_pdfMax <= 0) { printf("Bad pdfMax=%f\n",_pdfMax); assert(0); }
- }
- else
- if(v[0] == std::string("SCANPDF")) {
-
- _nScan = atoi(v[1].c_str());
- }
- else {
-
- printf("Error parsing decay file\n");
- assert(0);
- }
-
-
- // Now parse the rest of file for amplitude specifications.
-
- bool conjugate = false;
- size_t i = 2;
- assert(isKeyword(v[2]));
-
- while(i < v.size()) {
-
- size_t i0 = i;
-
- // Switch to conjugate amplitudes after keyword
- if(v[i] == std::string("CONJUGATE")) {
-
- assert(conjugate == false);
- conjugate = true;
- i++;
- _dm = strtod(v[i++].c_str(),tc);
- _mixAmpli = strtod(v[i++].c_str(),tc);
- _mixPhase = strtod(v[i++].c_str(),tc);
- }
-
- if (i >= v.size()) break;
- std::vector<std::string> params;
- EvtComplex c;
- int format;
-
- if(!conjugate && v[i] == std::string("AMPLITUDE")) {
-
- while(!isKeyword(v[++i])) params.push_back(v[i]);
- _amp.push_back(params);
-
- parseComplexCoef(i,v,c,format);
- _ampCoef.push_back(c);
- _coefFormat.push_back(format);
- continue;
- }
- else
- if(conjugate && v[i] == std::string("AMPLITUDE")) {
-
- while(!isKeyword(v[++i])) params.push_back(v[i]);
- _ampConj.push_back(params);
- parseComplexCoef(i,v,c,format);
- _ampConjCoef.push_back(c);
- _coefConjFormat.push_back(format);
- continue;
- }
- else {
-
- printf("Expect keyword, found parameter %s\n",v[i].c_str());
- assert(0);
- }
-
-
- assert(i > i0); _unused( i0 );
- }
-
- printf("PARSING SUCCESSFUL\n");
- printf("%d amplitude terms\n",(int)_amp.size());
- printf("%d conj amplitude terms\n",(int)_ampConj.size());
-}
-
-
-
-void EvtMultiChannelParser::parseComplexCoef(size_t& i, const std::vector<std::string>& v,
- EvtComplex& c, int& format)
-{
- // place holder for strtod
- char** tc = 0;
-
- std::string coefString = v[i++];
- assert(coefString == std::string("COEFFICIENT"));
-
- if(v[i] == std::string("POLAR_DEG")) {
-
- double mag = strtod(v[i+1].c_str(),tc);
- double phaseRad = strtod(v[i+2].c_str(),tc)*EvtConst::pi/180.0;
- i += 3;
- c = EvtComplex(mag*cos(phaseRad),mag*sin(phaseRad));
- format = POLAR_DEG;
- }
- else if(v[i] == std::string("POLAR_RAD")) {
-
- double mag = strtod(v[i+1].c_str(),tc);
- double phaseRad = strtod(v[i+2].c_str(),tc);
- i += 3;
- c = EvtComplex(mag*cos(phaseRad),mag*sin(phaseRad));
- format = POLAR_RAD;
- }
- else if(v[i] == std::string("CARTESIAN")) {
-
- double re = strtod(v[i+1].c_str(),tc);
- double im = strtod(v[i+2].c_str(),tc);
- i += 3;
- c = EvtComplex(re,im);
- format = CARTESIAN;
- }
- else {
-
- printf("Invalid format %s for complex coefficient\n",v[i].c_str());
- exit(0);
- }
-}
-
-
-double EvtMultiChannelParser::parseRealCoef(int& i, const std::vector<std::string>& v)
-{
- // place holder for strtod
- char** tc = 0;
- double value = 0;
-
- if(v[i] == std::string("COEFFICIENT")) {
-
- value = strtod(v[i+1].c_str(),tc);
- }
- else assert(0);
-
- i += 2;
-
- assert(value > 0.);
- return value;
-}
-
-
-bool EvtMultiChannelParser::isKeyword(const std::string& s)
-{
- if(s == std::string("AMPLITUDE")) return true;
- if(s == std::string("CONJUGATE")) return true;
- if(s == std::string("COEFFICIENT")) return true;
- return false;
-}
-
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff