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https://github.com/aaronpo97/the-biergarten-app.git
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41 lines
1.5 KiB
C++
41 lines
1.5 KiB
C++
/**
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* @file data_model/names_by_country.cc
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* @brief NamesByCountry::SampleName() implementation.
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*/
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#include "data_model/names_by_country.h"
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#include <utility>
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NamesByCountry::NamesByCountry(
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std::unordered_map<std::string, std::vector<ForenameEntry>>
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forenames_by_country,
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std::unordered_map<std::string, std::vector<std::string>>
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surnames_by_country)
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: forenames_by_country_(std::move(forenames_by_country)),
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surnames_by_country_(std::move(surnames_by_country)) {}
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std::optional<Name> NamesByCountry::SampleName(const std::string& iso3166_1,
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std::mt19937& rng) const {
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const auto forenames_it = forenames_by_country_.find(iso3166_1);
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const auto surnames_it = surnames_by_country_.find(iso3166_1);
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if (forenames_it == forenames_by_country_.end() ||
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surnames_it == surnames_by_country_.end() ||
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forenames_it->second.empty() || surnames_it->second.empty()) {
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return std::nullopt;
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}
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const std::vector<ForenameEntry>& forenames = forenames_it->second;
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const std::vector<std::string>& surnames = surnames_it->second;
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std::uniform_int_distribution<size_t> forename_dist(0, forenames.size() - 1);
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std::uniform_int_distribution<size_t> surname_dist(0, surnames.size() - 1);
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const ForenameEntry& forename = forenames[forename_dist(rng)];
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return Name{.first_name = forename.name,
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.last_name = surnames[surname_dist(rng)],
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.gender = forename.gender};
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}
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