// Formatting library for C++ - experimental range support // // Copyright (c) 2012 - present, Victor Zverovich // All rights reserved. // // For the license information refer to format.h. // // Copyright (c) 2018 - present, Remotion (Igor Schulz) // All Rights Reserved // {fmt} support for ranges, containers and types tuple interface. #ifndef FMT_RANGES_H_ #define FMT_RANGES_H_ #include #include #include #include "format.h" FMT_BEGIN_NAMESPACE namespace detail { template OutputIterator copy(const RangeT& range, OutputIterator out) { for (auto it = range.begin(), end = range.end(); it != end; ++it) *out++ = *it; return out; } template OutputIterator copy(const char* str, OutputIterator out) { while (*str) *out++ = *str++; return out; } template OutputIterator copy(char ch, OutputIterator out) { *out++ = ch; return out; } template OutputIterator copy(wchar_t ch, OutputIterator out) { *out++ = ch; return out; } // Returns true if T has a std::string-like interface, like std::string_view. template class is_std_string_like { template static auto check(U* p) -> decltype((void)p->find('a'), p->length(), (void)p->data(), int()); template static void check(...); public: static FMT_CONSTEXPR_DECL const bool value = is_string::value || std::is_convertible>::value || !std::is_void(nullptr))>::value; }; template struct is_std_string_like> : std::true_type {}; template class is_map { template static auto check(U*) -> typename U::mapped_type; template static void check(...); public: #ifdef FMT_FORMAT_MAP_AS_LIST static FMT_CONSTEXPR_DECL const bool value = false; #else static FMT_CONSTEXPR_DECL const bool value = !std::is_void(nullptr))>::value; #endif }; template class is_set { template static auto check(U*) -> typename U::key_type; template static void check(...); public: #ifdef FMT_FORMAT_SET_AS_LIST static FMT_CONSTEXPR_DECL const bool value = false; #else static FMT_CONSTEXPR_DECL const bool value = !std::is_void(nullptr))>::value && !is_map::value; #endif }; template struct conditional_helper {}; template struct is_range_ : std::false_type {}; #if !FMT_MSC_VER || FMT_MSC_VER > 1800 # define FMT_DECLTYPE_RETURN(val) \ ->decltype(val) { return val; } \ static_assert( \ true, "") // This makes it so that a semicolon is required after the // macro, which helps clang-format handle the formatting. // C array overload template auto range_begin(const T (&arr)[N]) -> const T* { return arr; } template auto range_end(const T (&arr)[N]) -> const T* { return arr + N; } template struct has_member_fn_begin_end_t : std::false_type {}; template struct has_member_fn_begin_end_t().begin()), decltype(std::declval().end())>> : std::true_type {}; // Member function overload template auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast(rng).begin()); template auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast(rng).end()); // ADL overload. Only participates in overload resolution if member functions // are not found. template auto range_begin(T&& rng) -> enable_if_t::value, decltype(begin(static_cast(rng)))> { return begin(static_cast(rng)); } template auto range_end(T&& rng) -> enable_if_t::value, decltype(end(static_cast(rng)))> { return end(static_cast(rng)); } template struct has_const_begin_end : std::false_type {}; template struct has_mutable_begin_end : std::false_type {}; template struct has_const_begin_end< T, void_t< decltype(detail::range_begin(std::declval&>())), decltype(detail::range_end(std::declval&>()))>> : std::true_type {}; template struct has_mutable_begin_end< T, void_t())), decltype(detail::range_end(std::declval())), enable_if_t::value>>> : std::true_type {}; template struct is_range_ : std::integral_constant::value || has_mutable_begin_end::value)> {}; # undef FMT_DECLTYPE_RETURN #endif // tuple_size and tuple_element check. template class is_tuple_like_ { template static auto check(U* p) -> decltype(std::tuple_size::value, int()); template static void check(...); public: static FMT_CONSTEXPR_DECL const bool value = !std::is_void(nullptr))>::value; }; // Check for integer_sequence #if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900 template using integer_sequence = std::integer_sequence; template using index_sequence = std::index_sequence; template using make_index_sequence = std::make_index_sequence; #else template struct integer_sequence { using value_type = T; static FMT_CONSTEXPR size_t size() { return sizeof...(N); } }; template using index_sequence = integer_sequence; template struct make_integer_sequence : make_integer_sequence {}; template struct make_integer_sequence : integer_sequence {}; template using make_index_sequence = make_integer_sequence; #endif template void for_each(index_sequence, Tuple&& tup, F&& f) FMT_NOEXCEPT { using std::get; // using free function get(T) now. const int _[] = {0, ((void)f(get(tup)), 0)...}; (void)_; // blocks warnings } template FMT_CONSTEXPR make_index_sequence::value> get_indexes( T const&) { return {}; } template void for_each(Tuple&& tup, F&& f) { const auto indexes = get_indexes(tup); for_each(indexes, std::forward(tup), std::forward(f)); } template using value_type = remove_cvref_t()))>; template OutputIt write_delimiter(OutputIt out) { *out++ = ','; *out++ = ' '; return out; } struct singleton { unsigned char upper; unsigned char lower_count; }; inline auto is_printable(uint16_t x, const singleton* singletons, size_t singletons_size, const unsigned char* singleton_lowers, const unsigned char* normal, size_t normal_size) -> bool { auto upper = x >> 8; auto lower_start = 0; for (size_t i = 0; i < singletons_size; ++i) { auto s = singletons[i]; auto lower_end = lower_start + s.lower_count; if (upper < s.upper) break; if (upper == s.upper) { for (auto j = lower_start; j < lower_end; ++j) { if (singleton_lowers[j] == (x & 0xff)) return false; } } lower_start = lower_end; } auto xsigned = static_cast(x); auto current = true; for (size_t i = 0; i < normal_size; ++i) { auto v = static_cast(normal[i]); auto len = (v & 0x80) != 0 ? (v & 0x7f) << 8 | normal[++i] : v; xsigned -= len; if (xsigned < 0) break; current = !current; } return current; } // Returns true iff the code point cp is printable. // This code is generated by support/printable.py. inline auto is_printable(uint32_t cp) -> bool { static constexpr singleton singletons0[] = { {0x00, 1}, {0x03, 5}, {0x05, 6}, {0x06, 3}, {0x07, 6}, {0x08, 8}, {0x09, 17}, {0x0a, 28}, {0x0b, 25}, {0x0c, 20}, {0x0d, 16}, {0x0e, 13}, {0x0f, 4}, {0x10, 3}, {0x12, 18}, {0x13, 9}, {0x16, 1}, {0x17, 5}, {0x18, 2}, {0x19, 3}, {0x1a, 7}, {0x1c, 2}, {0x1d, 1}, {0x1f, 22}, {0x20, 3}, {0x2b, 3}, {0x2c, 2}, {0x2d, 11}, {0x2e, 1}, {0x30, 3}, {0x31, 2}, {0x32, 1}, {0xa7, 2}, {0xa9, 2}, {0xaa, 4}, {0xab, 8}, {0xfa, 2}, {0xfb, 5}, {0xfd, 4}, {0xfe, 3}, {0xff, 9}, }; static constexpr unsigned char singletons0_lower[] = { 0xad, 0x78, 0x79, 0x8b, 0x8d, 0xa2, 0x30, 0x57, 0x58, 0x8b, 0x8c, 0x90, 0x1c, 0x1d, 0xdd, 0x0e, 0x0f, 0x4b, 0x4c, 0xfb, 0xfc, 0x2e, 0x2f, 0x3f, 0x5c, 0x5d, 0x5f, 0xb5, 0xe2, 0x84, 0x8d, 0x8e, 0x91, 0x92, 0xa9, 0xb1, 0xba, 0xbb, 0xc5, 0xc6, 0xc9, 0xca, 0xde, 0xe4, 0xe5, 0xff, 0x00, 0x04, 0x11, 0x12, 0x29, 0x31, 0x34, 0x37, 0x3a, 0x3b, 0x3d, 0x49, 0x4a, 0x5d, 0x84, 0x8e, 0x92, 0xa9, 0xb1, 0xb4, 0xba, 0xbb, 0xc6, 0xca, 0xce, 0xcf, 0xe4, 0xe5, 0x00, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, 0x3b, 0x45, 0x46, 0x49, 0x4a, 0x5e, 0x64, 0x65, 0x84, 0x91, 0x9b, 0x9d, 0xc9, 0xce, 0xcf, 0x0d, 0x11, 0x29, 0x45, 0x49, 0x57, 0x64, 0x65, 0x8d, 0x91, 0xa9, 0xb4, 0xba, 0xbb, 0xc5, 0xc9, 0xdf, 0xe4, 0xe5, 0xf0, 0x0d, 0x11, 0x45, 0x49, 0x64, 0x65, 0x80, 0x84, 0xb2, 0xbc, 0xbe, 0xbf, 0xd5, 0xd7, 0xf0, 0xf1, 0x83, 0x85, 0x8b, 0xa4, 0xa6, 0xbe, 0xbf, 0xc5, 0xc7, 0xce, 0xcf, 0xda, 0xdb, 0x48, 0x98, 0xbd, 0xcd, 0xc6, 0xce, 0xcf, 0x49, 0x4e, 0x4f, 0x57, 0x59, 0x5e, 0x5f, 0x89, 0x8e, 0x8f, 0xb1, 0xb6, 0xb7, 0xbf, 0xc1, 0xc6, 0xc7, 0xd7, 0x11, 0x16, 0x17, 0x5b, 0x5c, 0xf6, 0xf7, 0xfe, 0xff, 0x80, 0x0d, 0x6d, 0x71, 0xde, 0xdf, 0x0e, 0x0f, 0x1f, 0x6e, 0x6f, 0x1c, 0x1d, 0x5f, 0x7d, 0x7e, 0xae, 0xaf, 0xbb, 0xbc, 0xfa, 0x16, 0x17, 0x1e, 0x1f, 0x46, 0x47, 0x4e, 0x4f, 0x58, 0x5a, 0x5c, 0x5e, 0x7e, 0x7f, 0xb5, 0xc5, 0xd4, 0xd5, 0xdc, 0xf0, 0xf1, 0xf5, 0x72, 0x73, 0x8f, 0x74, 0x75, 0x96, 0x2f, 0x5f, 0x26, 0x2e, 0x2f, 0xa7, 0xaf, 0xb7, 0xbf, 0xc7, 0xcf, 0xd7, 0xdf, 0x9a, 0x40, 0x97, 0x98, 0x30, 0x8f, 0x1f, 0xc0, 0xc1, 0xce, 0xff, 0x4e, 0x4f, 0x5a, 0x5b, 0x07, 0x08, 0x0f, 0x10, 0x27, 0x2f, 0xee, 0xef, 0x6e, 0x6f, 0x37, 0x3d, 0x3f, 0x42, 0x45, 0x90, 0x91, 0xfe, 0xff, 0x53, 0x67, 0x75, 0xc8, 0xc9, 0xd0, 0xd1, 0xd8, 0xd9, 0xe7, 0xfe, 0xff, }; static constexpr singleton singletons1[] = { {0x00, 6}, {0x01, 1}, {0x03, 1}, {0x04, 2}, {0x08, 8}, {0x09, 2}, {0x0a, 5}, {0x0b, 2}, {0x0e, 4}, {0x10, 1}, {0x11, 2}, {0x12, 5}, {0x13, 17}, {0x14, 1}, {0x15, 2}, {0x17, 2}, {0x19, 13}, {0x1c, 5}, {0x1d, 8}, {0x24, 1}, {0x6a, 3}, {0x6b, 2}, {0xbc, 2}, {0xd1, 2}, {0xd4, 12}, {0xd5, 9}, {0xd6, 2}, {0xd7, 2}, {0xda, 1}, {0xe0, 5}, {0xe1, 2}, {0xe8, 2}, {0xee, 32}, {0xf0, 4}, {0xf8, 2}, {0xf9, 2}, {0xfa, 2}, {0xfb, 1}, }; static constexpr unsigned char singletons1_lower[] = { 0x0c, 0x27, 0x3b, 0x3e, 0x4e, 0x4f, 0x8f, 0x9e, 0x9e, 0x9f, 0x06, 0x07, 0x09, 0x36, 0x3d, 0x3e, 0x56, 0xf3, 0xd0, 0xd1, 0x04, 0x14, 0x18, 0x36, 0x37, 0x56, 0x57, 0x7f, 0xaa, 0xae, 0xaf, 0xbd, 0x35, 0xe0, 0x12, 0x87, 0x89, 0x8e, 0x9e, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, 0x45, 0x46, 0x49, 0x4a, 0x4e, 0x4f, 0x64, 0x65, 0x5c, 0xb6, 0xb7, 0x1b, 0x1c, 0x07, 0x08, 0x0a, 0x0b, 0x14, 0x17, 0x36, 0x39, 0x3a, 0xa8, 0xa9, 0xd8, 0xd9, 0x09, 0x37, 0x90, 0x91, 0xa8, 0x07, 0x0a, 0x3b, 0x3e, 0x66, 0x69, 0x8f, 0x92, 0x6f, 0x5f, 0xee, 0xef, 0x5a, 0x62, 0x9a, 0x9b, 0x27, 0x28, 0x55, 0x9d, 0xa0, 0xa1, 0xa3, 0xa4, 0xa7, 0xa8, 0xad, 0xba, 0xbc, 0xc4, 0x06, 0x0b, 0x0c, 0x15, 0x1d, 0x3a, 0x3f, 0x45, 0x51, 0xa6, 0xa7, 0xcc, 0xcd, 0xa0, 0x07, 0x19, 0x1a, 0x22, 0x25, 0x3e, 0x3f, 0xc5, 0xc6, 0x04, 0x20, 0x23, 0x25, 0x26, 0x28, 0x33, 0x38, 0x3a, 0x48, 0x4a, 0x4c, 0x50, 0x53, 0x55, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x63, 0x65, 0x66, 0x6b, 0x73, 0x78, 0x7d, 0x7f, 0x8a, 0xa4, 0xaa, 0xaf, 0xb0, 0xc0, 0xd0, 0xae, 0xaf, 0x79, 0xcc, 0x6e, 0x6f, 0x93, }; static constexpr unsigned char normal0[] = { 0x00, 0x20, 0x5f, 0x22, 0x82, 0xdf, 0x04, 0x82, 0x44, 0x08, 0x1b, 0x04, 0x06, 0x11, 0x81, 0xac, 0x0e, 0x80, 0xab, 0x35, 0x28, 0x0b, 0x80, 0xe0, 0x03, 0x19, 0x08, 0x01, 0x04, 0x2f, 0x04, 0x34, 0x04, 0x07, 0x03, 0x01, 0x07, 0x06, 0x07, 0x11, 0x0a, 0x50, 0x0f, 0x12, 0x07, 0x55, 0x07, 0x03, 0x04, 0x1c, 0x0a, 0x09, 0x03, 0x08, 0x03, 0x07, 0x03, 0x02, 0x03, 0x03, 0x03, 0x0c, 0x04, 0x05, 0x03, 0x0b, 0x06, 0x01, 0x0e, 0x15, 0x05, 0x3a, 0x03, 0x11, 0x07, 0x06, 0x05, 0x10, 0x07, 0x57, 0x07, 0x02, 0x07, 0x15, 0x0d, 0x50, 0x04, 0x43, 0x03, 0x2d, 0x03, 0x01, 0x04, 0x11, 0x06, 0x0f, 0x0c, 0x3a, 0x04, 0x1d, 0x25, 0x5f, 0x20, 0x6d, 0x04, 0x6a, 0x25, 0x80, 0xc8, 0x05, 0x82, 0xb0, 0x03, 0x1a, 0x06, 0x82, 0xfd, 0x03, 0x59, 0x07, 0x15, 0x0b, 0x17, 0x09, 0x14, 0x0c, 0x14, 0x0c, 0x6a, 0x06, 0x0a, 0x06, 0x1a, 0x06, 0x59, 0x07, 0x2b, 0x05, 0x46, 0x0a, 0x2c, 0x04, 0x0c, 0x04, 0x01, 0x03, 0x31, 0x0b, 0x2c, 0x04, 0x1a, 0x06, 0x0b, 0x03, 0x80, 0xac, 0x06, 0x0a, 0x06, 0x21, 0x3f, 0x4c, 0x04, 0x2d, 0x03, 0x74, 0x08, 0x3c, 0x03, 0x0f, 0x03, 0x3c, 0x07, 0x38, 0x08, 0x2b, 0x05, 0x82, 0xff, 0x11, 0x18, 0x08, 0x2f, 0x11, 0x2d, 0x03, 0x20, 0x10, 0x21, 0x0f, 0x80, 0x8c, 0x04, 0x82, 0x97, 0x19, 0x0b, 0x15, 0x88, 0x94, 0x05, 0x2f, 0x05, 0x3b, 0x07, 0x02, 0x0e, 0x18, 0x09, 0x80, 0xb3, 0x2d, 0x74, 0x0c, 0x80, 0xd6, 0x1a, 0x0c, 0x05, 0x80, 0xff, 0x05, 0x80, 0xdf, 0x0c, 0xee, 0x0d, 0x03, 0x84, 0x8d, 0x03, 0x37, 0x09, 0x81, 0x5c, 0x14, 0x80, 0xb8, 0x08, 0x80, 0xcb, 0x2a, 0x38, 0x03, 0x0a, 0x06, 0x38, 0x08, 0x46, 0x08, 0x0c, 0x06, 0x74, 0x0b, 0x1e, 0x03, 0x5a, 0x04, 0x59, 0x09, 0x80, 0x83, 0x18, 0x1c, 0x0a, 0x16, 0x09, 0x4c, 0x04, 0x80, 0x8a, 0x06, 0xab, 0xa4, 0x0c, 0x17, 0x04, 0x31, 0xa1, 0x04, 0x81, 0xda, 0x26, 0x07, 0x0c, 0x05, 0x05, 0x80, 0xa5, 0x11, 0x81, 0x6d, 0x10, 0x78, 0x28, 0x2a, 0x06, 0x4c, 0x04, 0x80, 0x8d, 0x04, 0x80, 0xbe, 0x03, 0x1b, 0x03, 0x0f, 0x0d, }; static constexpr unsigned char normal1[] = { 0x5e, 0x22, 0x7b, 0x05, 0x03, 0x04, 0x2d, 0x03, 0x66, 0x03, 0x01, 0x2f, 0x2e, 0x80, 0x82, 0x1d, 0x03, 0x31, 0x0f, 0x1c, 0x04, 0x24, 0x09, 0x1e, 0x05, 0x2b, 0x05, 0x44, 0x04, 0x0e, 0x2a, 0x80, 0xaa, 0x06, 0x24, 0x04, 0x24, 0x04, 0x28, 0x08, 0x34, 0x0b, 0x01, 0x80, 0x90, 0x81, 0x37, 0x09, 0x16, 0x0a, 0x08, 0x80, 0x98, 0x39, 0x03, 0x63, 0x08, 0x09, 0x30, 0x16, 0x05, 0x21, 0x03, 0x1b, 0x05, 0x01, 0x40, 0x38, 0x04, 0x4b, 0x05, 0x2f, 0x04, 0x0a, 0x07, 0x09, 0x07, 0x40, 0x20, 0x27, 0x04, 0x0c, 0x09, 0x36, 0x03, 0x3a, 0x05, 0x1a, 0x07, 0x04, 0x0c, 0x07, 0x50, 0x49, 0x37, 0x33, 0x0d, 0x33, 0x07, 0x2e, 0x08, 0x0a, 0x81, 0x26, 0x52, 0x4e, 0x28, 0x08, 0x2a, 0x56, 0x1c, 0x14, 0x17, 0x09, 0x4e, 0x04, 0x1e, 0x0f, 0x43, 0x0e, 0x19, 0x07, 0x0a, 0x06, 0x48, 0x08, 0x27, 0x09, 0x75, 0x0b, 0x3f, 0x41, 0x2a, 0x06, 0x3b, 0x05, 0x0a, 0x06, 0x51, 0x06, 0x01, 0x05, 0x10, 0x03, 0x05, 0x80, 0x8b, 0x62, 0x1e, 0x48, 0x08, 0x0a, 0x80, 0xa6, 0x5e, 0x22, 0x45, 0x0b, 0x0a, 0x06, 0x0d, 0x13, 0x39, 0x07, 0x0a, 0x36, 0x2c, 0x04, 0x10, 0x80, 0xc0, 0x3c, 0x64, 0x53, 0x0c, 0x48, 0x09, 0x0a, 0x46, 0x45, 0x1b, 0x48, 0x08, 0x53, 0x1d, 0x39, 0x81, 0x07, 0x46, 0x0a, 0x1d, 0x03, 0x47, 0x49, 0x37, 0x03, 0x0e, 0x08, 0x0a, 0x06, 0x39, 0x07, 0x0a, 0x81, 0x36, 0x19, 0x80, 0xb7, 0x01, 0x0f, 0x32, 0x0d, 0x83, 0x9b, 0x66, 0x75, 0x0b, 0x80, 0xc4, 0x8a, 0xbc, 0x84, 0x2f, 0x8f, 0xd1, 0x82, 0x47, 0xa1, 0xb9, 0x82, 0x39, 0x07, 0x2a, 0x04, 0x02, 0x60, 0x26, 0x0a, 0x46, 0x0a, 0x28, 0x05, 0x13, 0x82, 0xb0, 0x5b, 0x65, 0x4b, 0x04, 0x39, 0x07, 0x11, 0x40, 0x05, 0x0b, 0x02, 0x0e, 0x97, 0xf8, 0x08, 0x84, 0xd6, 0x2a, 0x09, 0xa2, 0xf7, 0x81, 0x1f, 0x31, 0x03, 0x11, 0x04, 0x08, 0x81, 0x8c, 0x89, 0x04, 0x6b, 0x05, 0x0d, 0x03, 0x09, 0x07, 0x10, 0x93, 0x60, 0x80, 0xf6, 0x0a, 0x73, 0x08, 0x6e, 0x17, 0x46, 0x80, 0x9a, 0x14, 0x0c, 0x57, 0x09, 0x19, 0x80, 0x87, 0x81, 0x47, 0x03, 0x85, 0x42, 0x0f, 0x15, 0x85, 0x50, 0x2b, 0x80, 0xd5, 0x2d, 0x03, 0x1a, 0x04, 0x02, 0x81, 0x70, 0x3a, 0x05, 0x01, 0x85, 0x00, 0x80, 0xd7, 0x29, 0x4c, 0x04, 0x0a, 0x04, 0x02, 0x83, 0x11, 0x44, 0x4c, 0x3d, 0x80, 0xc2, 0x3c, 0x06, 0x01, 0x04, 0x55, 0x05, 0x1b, 0x34, 0x02, 0x81, 0x0e, 0x2c, 0x04, 0x64, 0x0c, 0x56, 0x0a, 0x80, 0xae, 0x38, 0x1d, 0x0d, 0x2c, 0x04, 0x09, 0x07, 0x02, 0x0e, 0x06, 0x80, 0x9a, 0x83, 0xd8, 0x08, 0x0d, 0x03, 0x0d, 0x03, 0x74, 0x0c, 0x59, 0x07, 0x0c, 0x14, 0x0c, 0x04, 0x38, 0x08, 0x0a, 0x06, 0x28, 0x08, 0x22, 0x4e, 0x81, 0x54, 0x0c, 0x15, 0x03, 0x03, 0x05, 0x07, 0x09, 0x19, 0x07, 0x07, 0x09, 0x03, 0x0d, 0x07, 0x29, 0x80, 0xcb, 0x25, 0x0a, 0x84, 0x06, }; auto lower = static_cast(cp); if (cp < 0x10000) { return is_printable(lower, singletons0, sizeof(singletons0) / sizeof(*singletons0), singletons0_lower, normal0, sizeof(normal0)); } if (cp < 0x20000) { return is_printable(lower, singletons1, sizeof(singletons1) / sizeof(*singletons1), singletons1_lower, normal1, sizeof(normal1)); } if (0x2a6de <= cp && cp < 0x2a700) return false; if (0x2b735 <= cp && cp < 0x2b740) return false; if (0x2b81e <= cp && cp < 0x2b820) return false; if (0x2cea2 <= cp && cp < 0x2ceb0) return false; if (0x2ebe1 <= cp && cp < 0x2f800) return false; if (0x2fa1e <= cp && cp < 0x30000) return false; if (0x3134b <= cp && cp < 0xe0100) return false; if (0xe01f0 <= cp && cp < 0x110000) return false; return cp < 0x110000; } inline auto needs_escape(uint32_t cp) -> bool { return cp < 0x20 || cp == 0x7f || cp == '"' || cp == '\\' || !is_printable(cp); } template struct find_escape_result { const Char* begin; const Char* end; uint32_t cp; }; template auto find_escape(const Char* begin, const Char* end) -> find_escape_result { for (; begin != end; ++begin) { auto cp = static_cast::type>(*begin); if (sizeof(Char) == 1 && cp >= 0x80) continue; if (needs_escape(cp)) return {begin, begin + 1, cp}; } return {begin, nullptr, 0}; } inline auto find_escape(const char* begin, const char* end) -> find_escape_result { if (!is_utf8()) return find_escape(begin, end); auto result = find_escape_result{end, nullptr, 0}; for_each_codepoint(string_view(begin, to_unsigned(end - begin)), [&](uint32_t cp, string_view sv) { if (needs_escape(cp)) { result = {sv.begin(), sv.end(), cp}; return false; } return true; }); return result; } template auto write_range_entry(OutputIt out, basic_string_view str) -> OutputIt { *out++ = '"'; auto begin = str.begin(), end = str.end(); do { auto escape = find_escape(begin, end); out = copy_str(begin, escape.begin, out); begin = escape.end; if (!begin) break; auto c = static_cast(escape.cp); switch (escape.cp) { case '\n': *out++ = '\\'; c = 'n'; break; case '\r': *out++ = '\\'; c = 'r'; break; case '\t': *out++ = '\\'; c = 't'; break; case '"': FMT_FALLTHROUGH; case '\\': *out++ = '\\'; break; default: if (is_utf8()) { if (escape.cp < 0x100) { out = format_to(out, "\\x{:02x}", escape.cp); continue; } if (escape.cp < 0x10000) { out = format_to(out, "\\u{:04x}", escape.cp); continue; } if (escape.cp < 0x110000) { out = format_to(out, "\\U{:08x}", escape.cp); continue; } } for (Char escape_char : basic_string_view( escape.begin, to_unsigned(escape.end - escape.begin))) { out = format_to( out, "\\x{:02x}", static_cast::type>(escape_char)); } continue; } *out++ = c; } while (begin != end); *out++ = '"'; return out; } template >::value)> inline auto write_range_entry(OutputIt out, const T& str) -> OutputIt { auto sv = std_string_view(str); return write_range_entry(out, basic_string_view(sv)); } template ::value)> OutputIt write_range_entry(OutputIt out, const Arg v) { *out++ = '\''; *out++ = v; *out++ = '\''; return out; } template < typename Char, typename OutputIt, typename Arg, FMT_ENABLE_IF(!is_std_string_like::type>::value && !std::is_same::value)> OutputIt write_range_entry(OutputIt out, const Arg& v) { return write(out, v); } } // namespace detail template struct is_tuple_like { static FMT_CONSTEXPR_DECL const bool value = detail::is_tuple_like_::value && !detail::is_range_::value; }; template struct formatter::value>> { private: // C++11 generic lambda for format(). template struct format_each { template void operator()(const T& v) { if (i > 0) out = detail::write_delimiter(out); out = detail::write_range_entry(out, v); ++i; } int i; typename FormatContext::iterator& out; }; public: template FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { return ctx.begin(); } template auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) { auto out = ctx.out(); *out++ = '('; detail::for_each(values, format_each{0, out}); *out++ = ')'; return out; } }; template struct is_range { static FMT_CONSTEXPR_DECL const bool value = detail::is_range_::value && !detail::is_std_string_like::value && !detail::is_map::value && !std::is_convertible>::value && !std::is_constructible, T>::value; }; template struct formatter< T, Char, enable_if_t< fmt::is_range::value // Workaround a bug in MSVC 2019 and earlier. #if !FMT_MSC_VER && (is_formattable, Char>::value || detail::has_fallback_formatter, Char>::value) #endif >> { template FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { return ctx.begin(); } template < typename FormatContext, typename U, FMT_ENABLE_IF( std::is_same::value, const T, T>>::value)> auto format(U& range, FormatContext& ctx) -> decltype(ctx.out()) { #ifdef FMT_DEPRECATED_BRACED_RANGES Char prefix = '{'; Char postfix = '}'; #else Char prefix = detail::is_set::value ? '{' : '['; Char postfix = detail::is_set::value ? '}' : ']'; #endif auto out = ctx.out(); *out++ = prefix; int i = 0; auto it = std::begin(range); auto end = std::end(range); for (; it != end; ++it) { if (i > 0) out = detail::write_delimiter(out); out = detail::write_range_entry(out, *it); ++i; } *out++ = postfix; return out; } }; template struct formatter< T, Char, enable_if_t< detail::is_map::value // Workaround a bug in MSVC 2019 and earlier. #if !FMT_MSC_VER && (is_formattable, Char>::value || detail::has_fallback_formatter, Char>::value) #endif >> { template FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { return ctx.begin(); } template < typename FormatContext, typename U, FMT_ENABLE_IF( std::is_same::value, const T, T>>::value)> auto format(U& map, FormatContext& ctx) -> decltype(ctx.out()) { auto out = ctx.out(); *out++ = '{'; int i = 0; for (const auto& item : map) { if (i > 0) out = detail::write_delimiter(out); out = detail::write_range_entry(out, item.first); *out++ = ':'; *out++ = ' '; out = detail::write_range_entry(out, item.second); ++i; } *out++ = '}'; return out; } }; template struct tuple_join_view : detail::view { const std::tuple& tuple; basic_string_view sep; tuple_join_view(const std::tuple& t, basic_string_view s) : tuple(t), sep{s} {} }; template using tuple_arg_join = tuple_join_view; // Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers // support in tuple_join. It is disabled by default because of issues with // the dynamic width and precision. #ifndef FMT_TUPLE_JOIN_SPECIFIERS # define FMT_TUPLE_JOIN_SPECIFIERS 0 #endif template struct formatter, Char> { template FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { return do_parse(ctx, std::integral_constant()); } template auto format(const tuple_join_view& value, FormatContext& ctx) const -> typename FormatContext::iterator { return do_format(value, ctx, std::integral_constant()); } private: std::tuple::type, Char>...> formatters_; template FMT_CONSTEXPR auto do_parse(ParseContext& ctx, std::integral_constant) -> decltype(ctx.begin()) { return ctx.begin(); } template FMT_CONSTEXPR auto do_parse(ParseContext& ctx, std::integral_constant) -> decltype(ctx.begin()) { auto end = ctx.begin(); #if FMT_TUPLE_JOIN_SPECIFIERS end = std::get(formatters_).parse(ctx); if (N > 1) { auto end1 = do_parse(ctx, std::integral_constant()); if (end != end1) FMT_THROW(format_error("incompatible format specs for tuple elements")); } #endif return end; } template auto do_format(const tuple_join_view&, FormatContext& ctx, std::integral_constant) const -> typename FormatContext::iterator { return ctx.out(); } template auto do_format(const tuple_join_view& value, FormatContext& ctx, std::integral_constant) const -> typename FormatContext::iterator { auto out = std::get(formatters_) .format(std::get(value.tuple), ctx); if (N > 1) { out = std::copy(value.sep.begin(), value.sep.end(), out); ctx.advance_to(out); return do_format(value, ctx, std::integral_constant()); } return out; } }; FMT_MODULE_EXPORT_BEGIN /** \rst Returns an object that formats `tuple` with elements separated by `sep`. **Example**:: std::tuple t = {1, 'a'}; fmt::print("{}", fmt::join(t, ", ")); // Output: "1, a" \endrst */ template FMT_CONSTEXPR auto join(const std::tuple& tuple, string_view sep) -> tuple_join_view { return {tuple, sep}; } template FMT_CONSTEXPR auto join(const std::tuple& tuple, basic_string_view sep) -> tuple_join_view { return {tuple, sep}; } /** \rst Returns an object that formats `initializer_list` with elements separated by `sep`. **Example**:: fmt::print("{}", fmt::join({1, 2, 3}, ", ")); // Output: "1, 2, 3" \endrst */ template auto join(std::initializer_list list, string_view sep) -> join_view { return join(std::begin(list), std::end(list), sep); } FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_RANGES_H_