#include <iostream>
#include <iomanip>
#include <algorithm>
#include <toml/region.hpp>
#include <toml/result.hpp>

#define TOML11_TEST_LEX_ACCEPT(lxr, tkn, expct)                                \
do {                                                                           \
    const std::string token   (tkn);                                           \
    const std::string expected(expct);                                         \
    toml::detail::location<std::string> loc("test", token);                    \
    const auto result = lxr::invoke(loc);                                      \
    BOOST_CHECK(result.is_ok());                                               \
    if(result.is_ok()){                                                        \
    const auto region = result.unwrap();                                       \
    BOOST_CHECK_EQUAL(region.str(), expected);                                 \
    BOOST_CHECK_EQUAL(region.str().size(), expected.size());                   \
    BOOST_CHECK_EQUAL(static_cast<std::size_t>(std::distance(                  \
                    loc.begin(), loc.iter())), region.size());                 \
    } else {                                                                   \
    std::cerr << "lexer failed with input `";                                  \
    std::cerr << token << "`. expected `" << expected << "`\n";                \
    std::cerr << "reason: " << result.unwrap_err() << '\n';                    \
    }                                                                          \
} while(false);                                                                \
/**/

#define TOML11_TEST_LEX_REJECT(lxr, tkn)                                       \
do {                                                                           \
    const std::string token   (tkn);                                           \
    toml::detail::location<std::string> loc("test", token);                    \
    const auto result = lxr::invoke(loc);                                      \
    BOOST_CHECK(result.is_err());                                              \
    BOOST_CHECK(loc.begin() == loc.iter());                                    \
} while(false); /**/