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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmArgumentParser.h"
#include <algorithm>
#include <type_traits>
namespace ArgumentParser {
auto ActionMap::Emplace(cm::string_view name, Action action)
-> std::pair<iterator, bool>
{
auto const it =
std::lower_bound(this->begin(), this->end(), name,
[](value_type const& elem, cm::string_view const& k) {
return elem.first < k;
});
return (it != this->end() && it->first == name)
? std::make_pair(it, false)
: std::make_pair(this->emplace(it, name, std::move(action)), true);
}
auto ActionMap::Find(cm::string_view name) const -> const_iterator
{
auto const it =
std::lower_bound(this->begin(), this->end(), name,
[](value_type const& elem, cm::string_view const& k) {
return elem.first < k;
});
return (it != this->end() && it->first == name) ? it : this->end();
}
void Instance::Bind(bool& val)
{
val = true;
this->CurrentString = nullptr;
this->CurrentList = nullptr;
this->ExpectValue = false;
}
void Instance::Bind(std::string& val)
{
this->CurrentString = &val;
this->CurrentList = nullptr;
this->ExpectValue = true;
}
void Instance::Bind(StringList& val)
{
this->CurrentString = nullptr;
this->CurrentList = &val;
this->ExpectValue = true;
}
void Instance::Bind(MultiStringList& val)
{
this->CurrentString = nullptr;
this->CurrentList = (val.emplace_back(), &val.back());
this->ExpectValue = false;
}
void Instance::Consume(cm::string_view arg, void* result,
std::vector<std::string>* unparsedArguments,
std::vector<std::string>* keywordsMissingValue)
{
auto const it = this->Bindings.Find(arg);
if (it != this->Bindings.end()) {
it->second(*this, result);
if (this->ExpectValue && keywordsMissingValue != nullptr) {
keywordsMissingValue->emplace_back(arg);
}
return;
}
if (this->CurrentString != nullptr) {
this->CurrentString->assign(std::string(arg));
this->CurrentString = nullptr;
this->CurrentList = nullptr;
} else if (this->CurrentList != nullptr) {
this->CurrentList->emplace_back(arg);
} else if (unparsedArguments != nullptr) {
unparsedArguments->emplace_back(arg);
}
if (this->ExpectValue) {
if (keywordsMissingValue != nullptr) {
keywordsMissingValue->pop_back();
}
this->ExpectValue = false;
}
}
} // namespace ArgumentParser
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