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diff --git a/FixedOrderGen/src/config.cc b/FixedOrderGen/src/config.cc
index 7bb058b..f69ae32 100644
--- a/FixedOrderGen/src/config.cc
+++ b/FixedOrderGen/src/config.cc
@@ -1,205 +1,210 @@
#include "config.hh"
#include <cctype>
#include "RHEJ/config.hh"
namespace HEJFOG{
using RHEJ::set_from_yaml;
using RHEJ::set_from_yaml_if_defined;
namespace{
//! Get YAML tree of supported options
/**
* The configuration file is checked against this tree of options
* in assert_all_options_known.
*/
YAML::Node const & get_supported_options(){
const static YAML::Node supported = [](){
YAML::Node supported;
static const auto opts = {
"process", "trials", "unordered fraction", "scales", "scale factors",
"max scale ratio", "pdf", "event output", "analysis", "RanLux init"
};
// add subnodes to "supported" - the assigned value is irrelevant
for(auto && opt: opts) supported[opt] = "";
for(auto && jet_opt: {"min pt", "algorithm", "R", "max rapidity"}){
supported["jets"][jet_opt] = "";
}
for(auto && opt: {"mt", "use impact factors", "include bottom", "mb"}){
supported["Higgs coupling"][opt] = "";
}
for(auto && beam_opt: {"energy", "particles"}){
supported["beam"][beam_opt] = "";
}
return supported;
}();
return supported;
}
JetParameters get_jet_parameters(
YAML::Node const & node, std::string const & entry
){
const auto p = RHEJ::get_jet_parameters(node, entry);
JetParameters result;
result.def = p.def;
result.min_pt = p.min_pt;
set_from_yaml(result.max_y, node, entry, "max rapidity");
return result;
}
Beam get_Beam(
YAML::Node const & node, std::string const & entry
){
Beam beam;
std::vector<RHEJ::ParticleID> particles;
set_from_yaml(beam.energy, node, entry, "energy");
set_from_yaml_if_defined(particles, node, entry, "particles");
if(! particles.empty()){
for(RHEJ::ParticleID particle: particles){
if(particle != RHEJ::pid::p && particle != RHEJ::pid::p_bar){
throw std::invalid_argument{
"Unsupported value in option " + entry + ": particles:"
" only proton ('p') and antiproton ('p_bar') beams are supported"
};
}
}
if(particles.size() != 2){
throw std::invalid_argument{"Not exactly two beam particles"};
}
beam.particles.front() = particles.front();
beam.particles.back() = particles.back();
}
return beam;
}
std::vector<std::string> split(
std::string const & str, std::string const & delims
){
std::vector<std::string> result;
for(size_t begin, end = 0; end != str.npos;){
begin = str.find_first_not_of(delims, end);
if(begin == str.npos) break;
end = str.find_first_of(delims, begin + 1);
result.emplace_back(str.substr(begin, end - begin));
}
return result;
}
std::invalid_argument invalid_incoming(std::string const & what){
return std::invalid_argument{
"Incoming particle type " + what + " not supported,"
" incoming particles have to be 'p', 'p_bar' or partons"
};
}
std::invalid_argument invalid_outgoing(std::string const & what){
return std::invalid_argument{
"Outgoing particle type " + what + " not supported,"
" outgoing particles have to be 'j', 'photon', 'W+', 'W-', 'Z', 'H'"
};
}
Process get_process(
YAML::Node const & node, std::string const & entry
){
Process result;
std::string process_string;
set_from_yaml(process_string, node, entry);
assert(! process_string.empty());
const auto particles = split(process_string, " \n\t\v=>");
if(particles.size() < 3){
throw std::invalid_argument{
"Bad format in option process: '" + process_string
+ "', expected format is 'in1 in2 => out1 ...'"
};
}
result.incoming.front() = RHEJ::to_ParticleID(particles[0]);
result.incoming.back() = RHEJ::to_ParticleID(particles[1]);
for(size_t i = 0; i < result.incoming.size(); ++i){
const RHEJ::ParticleID in = result.incoming[i];
if(
in != RHEJ::pid::proton && in != RHEJ::pid::p_bar
&& !RHEJ::is_parton(in)
){
throw invalid_incoming(particles[i]);
}
}
result.njets = 0;
for(size_t i = result.incoming.size(); i < particles.size(); ++i){
assert(! particles[i].empty());
if(particles[i] == "j") ++result.njets;
else if(std::isdigit(particles[i].front())){
if(particles[i].back() != 'j'){
throw invalid_outgoing(particles[i]);
}
result.njets += std::stoi(particles[i]);
}
else{
const auto pid = RHEJ::to_ParticleID(particles[i]);
if(!RHEJ::is_AWZH_boson(pid)){
throw invalid_outgoing(particles[i]);
}
if(result.boson){
throw std::invalid_argument{
"More than one outgoing boson is not supported"
};
}
result.boson = pid;
}
}
if(result.njets < 2){
throw std::invalid_argument{
"Process has to include at least two jets ('j')"
};
}
return result;
}
Config to_Config(YAML::Node const & yaml){
try{
RHEJ::assert_all_options_known(yaml, get_supported_options());
}
catch(RHEJ::unknown_option const & ex){
throw RHEJ::unknown_option{std::string{"Unknown option '"} + ex.what() + "'"};
}
Config config;
config.process = get_process(yaml, "process");
set_from_yaml(config.trials, yaml, "trials");
config.jets = get_jet_parameters(yaml, "jets");
config.beam = get_Beam(yaml, "beam");
for(size_t i = 0; i < config.process.incoming.size(); ++i){
const auto & in = config.process.incoming[i];
using namespace RHEJ::pid;
if( (in == p || in == p_bar) && in != config.beam.particles[i]){
throw std::invalid_argument{
"Particle type of beam " + std::to_string(i+1) + " incompatible"
+ " with type of incoming particle " + std::to_string(i+1)
};
}
}
set_from_yaml(config.pdf_id, yaml, "pdf");
set_from_yaml(config.unordered_fraction, yaml, "unordered fraction");
+ if(config.unordered_fraction < 0 || config.unordered_fraction > 1){
+ throw std::invalid_argument{
+ "unordered fraction has to be between 0 and 1"
+ };
+ }
set_from_yaml_if_defined(config.analysis_parameters, yaml, "analysis");
config.scale_gen = RHEJ::ScaleGenerator{RHEJ::to_ScaleConfig(yaml)};
set_from_yaml_if_defined(config.output, yaml, "event output");
set_from_yaml_if_defined(config.RanLux_init, yaml, "RanLux init");
config.Higgs_coupling = RHEJ::get_Higgs_coupling(yaml, "Higgs coupling");
return config;
}
}
Config load_config(std::string const & config_file){
try{
return to_Config(YAML::LoadFile(config_file));
}
catch(...){
std::cerr << "Error reading " << config_file << ":\n ";
throw;
}
}
}

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