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feat: format any number of values into an err msg

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```cpp
toml::format_error("[error] message", v1, "v1", v2, "v2", ...);
```
This commit is contained in:
ToruNiina
2019-03-15 12:38:37 +09:00
parent 0babe8d589
commit 61dfa4a2dc
1 changed files with 28 additions and 14 deletions
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42
toml/value.hpp
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@@ -794,24 +794,38 @@ inline bool operator>=(const toml::value& lhs, const toml::value& rhs)
return !(lhs < rhs);
}
inline std::string format_error(const std::string& err_msg,
const toml::value& v, const std::string& comment,
std::vector<std::string> hints = {})
namespace detail
{
return detail::format_underline(err_msg, {
{std::addressof(detail::get_region(v)), comment}
}, std::move(hints));
inline std::string format_error_impl(const std::string& err_msg,
std::vector<std::pair<region_base const*, std::string>> val,
std::vector<std::string> hints)
{
return format_underline(err_msg, std::move(val), std::move(hints));
}
inline std::string format_error_impl(const std::string& err_msg,
std::vector<std::pair<region_base const*, std::string>> val)
{
return format_underline(err_msg, std::move(val));
}
inline std::string format_error(const std::string& err_msg,
const toml::value& v1, const std::string& comment1,
const toml::value& v2, const std::string& comment2,
std::vector<std::string> hints = {})
template<typename ... Ts>
std::string format_error_impl(const std::string& err_msg,
std::vector<std::pair<region_base const*, std::string>> val,
const toml::value& v, const std::string& comment,
Ts&& ... args)
{
return detail::format_underline(err_msg, {
{std::addressof(detail::get_region(v1)), comment1},
{std::addressof(detail::get_region(v2)), comment2}
}, std::move(hints));
val.push_back(std::make_pair(std::addressof(get_region(v)), comment));
return format_error_impl(err_msg, std::move(val), std::forward<Ts>(args)...);
}
} // detail
template<typename ... Ts>
std::string format_error(const std::string& err_msg, Ts&& ... args)
{
std::vector<std::pair<detail::region_base const*, std::string>> val;
val.reserve(sizeof...(args) / 2);
return detail::format_error_impl(err_msg, std::move(val),
std::forward<Ts>(args)...);
}
template<typename Visitor>