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#include "CommonTools/Utils/src/CandForTest.h"
#include "CommonTools/Utils/interface/ExpressionEvaluator.h"
#include "CommonTools/Utils/interface/ExpressionEvaluatorTemplates.h"
#include "FWCore/Utilities/interface/Exception.h"
#include <iostream>
#include <atomic>
#include <thread>
int main() {
// build fake test package...
std::string pkg = "ExpressionEvaluatorTests/EEUnitTest";
using reco::ExpressionEvaluator;
using vcut = reco::genericExpression<bool, int, int>;
using Cand = eetest::CandForTest;
using MyExpr = reco::MaskCollection<eetest::CandForTest>;
std::vector<Cand> oriC;
oriC.reserve(10); // pre-allocate so it doesn't reallocate
MyExpr::Collection c;
for (int i = 5; i < 15; ++i) {
oriC.emplace_back(Cand(i, 1, 1));
c.push_back(&oriC.back());
}
MyExpr::Mask r;
std::string expr =
"void eval(Collection const & c, Mask & r) const override{ r.resize(c.size()); "
"std::transform(c.begin(),c.end(),r.begin(), [](Collection::value_type const & c){ return (*c).pt()>10;}); }";
ExpressionEvaluator parser("CommonTools/Utils", "reco::MaskCollection<eetest::CandForTest>", expr);
auto func = parser.expr<MyExpr>();
func->eval(c, r);
std::cout << r.size() << ' ' << std::count(r.begin(), r.end(), true) << std::endl;
std::string cut = "bool operator()(int i, int j) const override { return i<10&& j<5; }";
// ExpressionEvaluator parser2("ExpressionEvaluatorTests/EEUnitTest","eetest::vcut",cut.c_str());
// auto mcut = parser2.expr<eetest::vcut>();
auto const& mcut =
*reco_expressionEvaluator("CommonTools/Utils", SINGLE_ARG(reco::genericExpression<bool, int, int>), cut);
std::cout << mcut(2, 7) << ' ' << mcut(3, 4) << std::endl;
try {
std::string cut = "bool operator()(int i, int j) const override { return i<10&& j<5; }";
ExpressionEvaluator parser2("Bla/Blo", "eetest::vcut", cut);
auto mcut = parser2.expr<vcut>();
std::cout << (*mcut)(2, 7) << ' ' << (*mcut)(3, 4) << std::endl;
} catch (cms::Exception const& e) {
std::cout << e.what() << std::endl;
} catch (...) {
std::cout << "unknown error...." << std::endl;
}
try {
std::string cut = "bool operator()(int i, int j) const override { return i<10&& j<5; }";
auto const& mcut =
*reco_expressionEvaluator("CommonTools/Utils", SINGLE_ARG(reco::genericExpression<bool, int, int>), cut);
std::cout << mcut(2, 7) << ' ' << mcut(3, 4) << std::endl;
} catch (cms::Exception const& e) {
std::cout << e.what() << std::endl;
} catch (...) {
std::cout << "unknown error...." << std::endl;
}
// stress test
std::atomic<int> j(0);
//wait for both threads to start before running the test
std::atomic<int> waitForAll(2);
auto work = [&]() {
--waitForAll;
while (waitForAll > 0)
;
reco::genericExpression<bool, int, int> const* acut = nullptr;
for (int i = 0; i < 20; ++i) {
acut = reco_expressionEvaluator("CommonTools/Utils", SINGLE_ARG(reco::genericExpression<bool, int, int>), cut);
(*acut)(2, 7);
std::cerr << j++ << ',';
}
};
std::thread t1(work);
std::thread t2(work);
t1.join();
t2.join();
std::cerr << std::endl;
std::cout << "If HERE OK" << std::endl;
return 0;
}
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