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chore: improve error generation. exit on missing required arg. remove redundant fake_parser.

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This commit is contained in:
killua
2026-03-16 22:37:59 +04:00
parent 593b7ed046
commit 9d108df846
4 changed files with 79 additions and 42 deletions
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36
src/headers/parser/parser_v2.hpp
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@@ -15,10 +15,6 @@
#include <vector>
namespace argument_parser::v2 {
namespace internal {
static inline fake_parser fake_parser{};
}
enum class add_argument_flags { ShortArgument, LongArgument, HelpText, Action, Required };
namespace flags {
@@ -104,30 +100,6 @@ namespace argument_parser::v2 {
}
private:
template <typename T> struct has_format_hint {
private:
typedef char YesType[1];
typedef char NoType[2];
template <typename C> static YesType &test(decltype(&C::format_hint));
template <typename> static NoType &test(...);
public:
static constexpr bool value = sizeof(test<T>(0)) == sizeof(YesType);
};
template <typename T> struct has_purpose_hint {
private:
typedef char YesType[1];
typedef char NoType[2];
template <typename C> static YesType &test(decltype(&C::purpose_hint));
template <typename> static NoType &test(...);
public:
static constexpr bool value = sizeof(test<T>(0)) == sizeof(YesType);
};
template <bool IsTyped, typename ActionType, typename T, typename ArgsMap>
void add_argument_impl(ArgsMap const &argument_pairs) {
std::unordered_map<extended_add_argument_flags, bool> found_params{
@@ -174,8 +146,8 @@ namespace argument_parser::v2 {
switch (suggested_add) {
case candidate_type::typed_action:
if (help_text.empty()) {
if constexpr (has_format_hint<parsing_traits::parser_trait<T>>::value &&
has_purpose_hint<parsing_traits::parser_trait<T>>::value) {
if constexpr (internal::sfinae::has_format_hint<parsing_traits::parser_trait<T>>::value &&
internal::sfinae::has_purpose_hint<parsing_traits::parser_trait<T>>::value) {
auto format_hint = parsing_traits::parser_trait<T>::format_hint;
auto purpose_hint = parsing_traits::parser_trait<T>::purpose_hint;
help_text = "Triggers action with " + std::string(purpose_hint) + " (" +
@@ -190,8 +162,8 @@ namespace argument_parser::v2 {
break;
case candidate_type::store_other:
if (help_text.empty()) {
if constexpr (has_format_hint<parsing_traits::parser_trait<T>>::value &&
has_purpose_hint<parsing_traits::parser_trait<T>>::value) {
if constexpr (internal::sfinae::has_format_hint<parsing_traits::parser_trait<T>>::value &&
internal::sfinae::has_purpose_hint<parsing_traits::parser_trait<T>>::value) {
auto format_hint = parsing_traits::parser_trait<T>::format_hint;
auto purpose_hint = parsing_traits::parser_trait<T>::purpose_hint;
help_text =