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support for positional and mutually exclusive args in groups

master
Daniel Kolesa 2017-05-25 19:17:42 +02:00
parent 32197f600c
commit 8391b03b37
1 changed files with 24 additions and 7 deletions
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31
ostd/argparse.hh
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@ -57,6 +57,7 @@ enum class arg_value {
struct arg_description { struct arg_description {
friend struct arg_description_container; friend struct arg_description_container;
friend struct arg_group;
virtual ~arg_description() {} virtual ~arg_description() {}
@ -387,8 +388,24 @@ struct arg_group: arg_description {
template<typename ...A> template<typename ...A>
arg_optional &add_optional(A &&...args) { arg_optional &add_optional(A &&...args) {
arg_optional *o = new arg_optional(std::forward<A>(args)...); arg_description *p = new arg_optional(std::forward<A>(args)...);
return *p_opts.emplace_back(o); return static_cast<arg_optional &>(*p_opts.emplace_back(p));
}
template<typename ...A>
arg_positional &add_positional(A &&...args) {
arg_description *p = new arg_positional(std::forward<A>(args)...);
return static_cast<arg_positional &>(*p_opts.emplace_back(p));
}
template<typename ...A>
arg_mutually_exclusive_group &add_mutually_exclusive_group(A &&...args) {
arg_description *p = new arg_mutually_exclusive_group(
std::forward<A>(args)...
);
return static_cast<arg_mutually_exclusive_group &>(
*p_opts.emplace_back(p)
);
} }
template<typename F> template<typename F>
@ -415,21 +432,21 @@ protected:
private: private:
template<typename F> template<typename F>
bool for_each_impl(F &func, bool) const { bool for_each_impl(F &func, bool iter_ex) const {
for (auto &desc: p_opts) { for (auto &desc: p_opts) {
switch (desc->type()) { switch (desc->type()) {
case arg_type::OPTIONAL: case arg_type::OPTIONAL:
case arg_type::POSITIONAL: case arg_type::POSITIONAL:
if (!func(static_cast<arg_description const &>(*desc))) { if (!func(*desc)) {
return false; return false;
} }
break; break;
case arg_type::MUTUALLY_EXCLUSIVE_GROUP: case arg_type::MUTUALLY_EXCLUSIVE_GROUP:
/*if (!static_cast<arg_mutually_exclusive_group const &>( if (!static_cast<arg_mutually_exclusive_group const &>(
*desc *desc
).for_each(func, iter_ex)) { ).for_each(func, iter_ex)) {
return false; return false;
}*/ }
break; break;
default: default:
/* should never happen */ /* should never happen */
@ -440,7 +457,7 @@ private:
} }
std::string p_name; std::string p_name;
std::vector<std::unique_ptr<arg_optional>> p_opts; std::vector<std::unique_ptr<arg_description>> p_opts;
}; };
struct arg_description_container { struct arg_description_container {