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make sure the value requirement is always correct for optionals

master
Daniel Kolesa 2017-05-18 03:45:41 +02:00
parent c8a22ab3a0
commit 117a34b855
1 changed files with 14 additions and 0 deletions
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14
ostd/argparse.hh
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@ -154,6 +154,7 @@ protected:
arg_optional(string_range name, arg_value req, std::size_t nargs = 1):
arg_argument(req, nargs)
{
validate_req(req);
p_names.emplace_back(name);
}
arg_optional(string_range name, std::size_t nargs):
@ -168,6 +169,7 @@ protected:
):
arg_argument(req, nargs)
{
validate_req(req);
p_names.emplace_back(name1);
p_names.emplace_back(name2);
}
@ -186,6 +188,18 @@ protected:
}
private:
void validate_req(arg_value req) {
switch (req) {
case arg_value::NONE:
case arg_value::REQUIRED:
case arg_value::OPTIONAL:
case arg_value::ALL:
break;
default:
throw arg_error{"invalid argument requirement"};
}
}
std::function<void(iterator_range<string_range const *>)> p_action;
std::vector<std::string> p_names;
std::size_t p_used = 0;