62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
/**
|
|
This file is a part of rexy's general purpose library
|
|
Copyright (C) 2022 rexy712
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef REXY_DETAIL_FORMAT_PARSE_CONTEXT_HPP
|
|
#define REXY_DETAIL_FORMAT_PARSE_CONTEXT_HPP
|
|
|
|
#include <cstddef> //size_t
|
|
|
|
#include "../../string_view.hpp"
|
|
|
|
namespace rexy::fmt{
|
|
|
|
//Holds the format string for use in calls to 'formatter<T>::parse'
|
|
//Additionally keeps tally of the current argument index for automatic replacement indexing or
|
|
//switches to manual indexing mode when encountering a manually indexed field. Throws error on mode switch.
|
|
template<class Char>
|
|
class basic_format_parse_context
|
|
{
|
|
public:
|
|
using char_type = Char;
|
|
using iterator = typename basic_string_view<Char>::const_iterator;
|
|
using const_iterator = typename basic_string_view<Char>::const_iterator;
|
|
|
|
public:
|
|
basic_string_view<char_type> format;
|
|
std::size_t arg_count;
|
|
long long arg_index = 0;
|
|
|
|
public:
|
|
//fmt is the format specifier, num_args is 'sizeof...(Args)' where 'Args' is the parameter pack of the format call
|
|
constexpr explicit basic_format_parse_context(basic_string_view<char_type> fmt, std::size_t num_args = 0)noexcept;
|
|
basic_format_parse_context(const basic_format_parse_context&) = delete;
|
|
basic_format_parse_context(basic_format_parse_context&&) = delete;
|
|
basic_format_parse_context& operator=(basic_format_parse_context&&) = delete;
|
|
basic_format_parse_context& operator=(const basic_format_parse_context&) = delete;
|
|
|
|
constexpr const_iterator begin(void)const noexcept;
|
|
constexpr const_iterator end(void)const noexcept;
|
|
constexpr void advance_to(const_iterator it);
|
|
constexpr std::size_t next_arg_id(void);
|
|
constexpr void check_arg_id(std::size_t id);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|