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argument_parser.h
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argument_parser.h
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//
// Created by Артем Парфенов on 21.03.2022.
// most of the code is taken from seminars
#pragma once
#include <string>
#include <unordered_map>
#include <variant>
#include <vector>
#include <exception>
#include <memory>
using Argument = std::variant<std::string*, double*, size_t*>;
using NameOfArg = std::pair<std::string_view, Argument>;
using StrToRefs = std::vector<NameOfArg>;
using StrToArgs = std::unordered_map<std::string_view, std::vector<NameOfArg>>;
struct ArgCast{
ArgCast (const char* data);
void operator()(std::string* s);
void operator()(size_t* s);
void operator()(double* s);
private:
const char* data_;
};
class Parser {
public:
Parser() = default;
void AddKeywordArg(const std::string_view& name, const std::vector<NameOfArg> arg);
std::vector<std::string_view> Parse(size_t argc, char** argv);
void AddPositionalArg(const std::string_view& name, Argument arg);
void PrintHelp() const;
private:
StrToRefs positional_args_;
StrToArgs keyword_fields_;
};