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Resolve template recursion in add_parents method

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Stephan van Veen 2019-05-11 13:33:08 +02:00
parent 3bd7b342f0
commit ecf8286c9e
1 changed files with 15 additions and 21 deletions
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36
include/argparse.hpp
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@ -325,30 +325,24 @@ class ArgumentParser {
return *tArgument;
}
// Base case for add_parents parameter packing
void add_parents() {
for (const auto& tParentParser : mParentParsers) {
auto tPositionalArguments = tParentParser.mPositionalArguments;
for (auto& tArgument : tPositionalArguments) {
mPositionalArguments.emplace_back(tArgument);
}
auto tOptionalArguments = tParentParser.mOptionalArguments;
for (auto& tArgument : tOptionalArguments) {
mOptionalArguments.emplace_back(tArgument);
}
auto tArgumentMap = tParentParser.mArgumentMap;
for (auto&[tKey, tValue] : tArgumentMap) {
// Parameter packed add_parents method
// Accepts a variadic number of ArgumentParser objects
template<typename... Targs>
void add_parents(Targs... Fargs) {
const auto tNewParentParsers = {Fargs...};
for (const auto& tParentParser : tNewParentParsers) {
const auto& tPositionalArguments = tParentParser.mPositionalArguments;
std::copy(std::begin(tPositionalArguments), std::end(tPositionalArguments), std::back_inserter(mPositionalArguments));
const auto& tOptionalArguments = tParentParser.mOptionalArguments;
std::copy(std::begin(tOptionalArguments), std::end(tOptionalArguments), std::back_inserter(mOptionalArguments));
const auto& tArgumentMap = tParentParser.mArgumentMap;
for (const auto&[tKey, tValue] : tArgumentMap) {
mArgumentMap.insert_or_assign(tKey, tValue);
}
}
}
// Parameter packed add_parents method
// Accepts a variadic number of ArgumentParser objects
template<typename T, typename... Targs>
void add_parents(T aArgumentParser, Targs... Fargs) {
mParentParsers.emplace_back(aArgumentParser);
add_parents(Fargs...);
std::move(std::begin(tNewParentParsers), std::end(tNewParentParsers), std::back_inserter(mParentParsers));
}
/* Call parse_args_internal - which does all the work