diff options
Diffstat (limited to 'src/3rdparty')
| -rw-r--r-- | src/3rdparty/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/3rdparty/fmt/CMakeLists.txt | 5 | ||||
| -rw-r--r-- | src/3rdparty/fmt/LICENSE.rst | 27 | ||||
| -rw-r--r-- | src/3rdparty/fmt/core.h | 2122 | ||||
| -rw-r--r-- | src/3rdparty/fmt/format-inl.h | 2801 | ||||
| -rw-r--r-- | src/3rdparty/fmt/format.h | 3960 |
6 files changed, 8916 insertions, 0 deletions
diff --git a/src/3rdparty/CMakeLists.txt b/src/3rdparty/CMakeLists.txt index ca082cf78..50fa6922f 100644 --- a/src/3rdparty/CMakeLists.txt +++ b/src/3rdparty/CMakeLists.txt @@ -1,3 +1,4 @@ +add_subdirectory(fmt) add_subdirectory(md5) add_subdirectory(squirrel) add_subdirectory(opengl) diff --git a/src/3rdparty/fmt/CMakeLists.txt b/src/3rdparty/fmt/CMakeLists.txt new file mode 100644 index 000000000..22a02416c --- /dev/null +++ b/src/3rdparty/fmt/CMakeLists.txt @@ -0,0 +1,5 @@ +add_files( + core.h + format.h + format-inl.h +) diff --git a/src/3rdparty/fmt/LICENSE.rst b/src/3rdparty/fmt/LICENSE.rst new file mode 100644 index 000000000..f0ec3db4d --- /dev/null +++ b/src/3rdparty/fmt/LICENSE.rst @@ -0,0 +1,27 @@ +Copyright (c) 2012 - present, Victor Zverovich + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +--- Optional exception to the license --- + +As an exception, if, as a result of your compiling your source code, portions +of this Software are embedded into a machine-executable object form of such +source code, you may redistribute such embedded portions in such object form +without including the above copyright and permission notices. diff --git a/src/3rdparty/fmt/core.h b/src/3rdparty/fmt/core.h new file mode 100644 index 000000000..0a81e0ccd --- /dev/null +++ b/src/3rdparty/fmt/core.h @@ -0,0 +1,2122 @@ +// Formatting library for C++ - the core API +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CORE_H_ +#define FMT_CORE_H_ + +#include <cstdio> // std::FILE +#include <cstring> +#include <functional> +#include <iterator> +#include <memory> +#include <string> +#include <type_traits> +#include <vector> + +// The fmt library version in the form major * 10000 + minor * 100 + patch. +#define FMT_VERSION 70103 + +#ifdef __clang__ +# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) +#else +# define FMT_CLANG_VERSION 0 +#endif + +#if defined(__GNUC__) && !defined(__clang__) +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +#else +# define FMT_GCC_VERSION 0 +#endif + +#if defined(__INTEL_COMPILER) +# define FMT_ICC_VERSION __INTEL_COMPILER +#else +# define FMT_ICC_VERSION 0 +#endif + +#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) +# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION +#else +# define FMT_HAS_GXX_CXX11 0 +#endif + +#ifdef __NVCC__ +# define FMT_NVCC __NVCC__ +#else +# define FMT_NVCC 0 +#endif + +#ifdef _MSC_VER +# define FMT_MSC_VER _MSC_VER +# define FMT_SUPPRESS_MSC_WARNING(n) __pragma(warning(suppress : n)) +#else +# define FMT_MSC_VER 0 +# define FMT_SUPPRESS_MSC_WARNING(n) +#endif + +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif + +#if defined(__has_include) && !defined(__INTELLISENSE__) && \ + (!FMT_ICC_VERSION || FMT_ICC_VERSION >= 1600) +# define FMT_HAS_INCLUDE(x) __has_include(x) +#else +# define FMT_HAS_INCLUDE(x) 0 +#endif + +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \ + (__cplusplus >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \ + (__cplusplus >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +// Check if relaxed C++14 constexpr is supported. +// GCC doesn't allow throw in constexpr until version 6 (bug 67371). +#ifndef FMT_USE_CONSTEXPR +# define FMT_USE_CONSTEXPR \ + (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \ + (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) && \ + !FMT_NVCC && !FMT_ICC_VERSION +#endif +#if FMT_USE_CONSTEXPR +# define FMT_CONSTEXPR constexpr +# define FMT_CONSTEXPR_DECL constexpr +#else +# define FMT_CONSTEXPR inline +# define FMT_CONSTEXPR_DECL +#endif + +#ifndef FMT_OVERRIDE +# if FMT_HAS_FEATURE(cxx_override_control) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 +# define FMT_OVERRIDE override +# else +# define FMT_OVERRIDE +# endif +#endif + +// Check if exceptions are disabled. +#ifndef FMT_EXCEPTIONS +# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \ + FMT_MSC_VER && !_HAS_EXCEPTIONS +# define FMT_EXCEPTIONS 0 +# else +# define FMT_EXCEPTIONS 1 +# endif +#endif + +// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). +#ifndef FMT_USE_NOEXCEPT +# define FMT_USE_NOEXCEPT 0 +#endif + +#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 +# define FMT_DETECTED_NOEXCEPT noexcept +# define FMT_HAS_CXX11_NOEXCEPT 1 +#else +# define FMT_DETECTED_NOEXCEPT throw() +# define FMT_HAS_CXX11_NOEXCEPT 0 +#endif + +#ifndef FMT_NOEXCEPT +# if FMT_EXCEPTIONS || FMT_HAS_CXX11_NOEXCEPT +# define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT +# else +# define FMT_NOEXCEPT +# endif +#endif + +// [[noreturn]] is disabled on MSVC and NVCC because of bogus unreachable code +// warnings. +#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VER && \ + !FMT_NVCC +# define FMT_NORETURN [[noreturn]] +#else +# define FMT_NORETURN +#endif + +#ifndef FMT_DEPRECATED +# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900 +# define FMT_DEPRECATED [[deprecated]] +# else +# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__) +# define FMT_DEPRECATED __attribute__((deprecated)) +# elif FMT_MSC_VER +# define FMT_DEPRECATED __declspec(deprecated) +# else +# define FMT_DEPRECATED /* deprecated */ +# endif +# endif +#endif + +// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers. +#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC +# define FMT_DEPRECATED_ALIAS +#else +# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED +#endif + +#ifndef FMT_INLINE +# if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_INLINE inline __attribute__((always_inline)) +# else +# define FMT_INLINE inline +# endif +#endif + +#ifndef FMT_USE_INLINE_NAMESPACES +# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \ + (FMT_MSC_VER >= 1900 && !_MANAGED) +# define FMT_USE_INLINE_NAMESPACES 1 +# else +# define FMT_USE_INLINE_NAMESPACES 0 +# endif +#endif + +#ifndef FMT_BEGIN_NAMESPACE +# if FMT_USE_INLINE_NAMESPACES +# define FMT_INLINE_NAMESPACE inline namespace +# define FMT_END_NAMESPACE \ + } \ + } +# else +# define FMT_INLINE_NAMESPACE namespace +# define FMT_END_NAMESPACE \ + } \ + using namespace v7; \ + } +# endif +# define FMT_BEGIN_NAMESPACE \ + namespace fmt { \ + FMT_INLINE_NAMESPACE v7 { +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# define FMT_CLASS_API FMT_SUPPRESS_MSC_WARNING(4275) +# ifdef FMT_EXPORT +# define FMT_API __declspec(dllexport) +# define FMT_EXTERN_TEMPLATE_API FMT_API +# define FMT_EXPORTED +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# define FMT_EXTERN_TEMPLATE_API FMT_API +# endif +#else +# define FMT_CLASS_API +#endif +#ifndef FMT_API +# define FMT_API +#endif +#ifndef FMT_EXTERN_TEMPLATE_API +# define FMT_EXTERN_TEMPLATE_API +#endif +#ifndef FMT_INSTANTIATION_DEF_API +# define FMT_INSTANTIATION_DEF_API FMT_API +#endif + +#ifndef FMT_HEADER_ONLY +# define FMT_EXTERN extern +#else +# define FMT_EXTERN +#endif + +// libc++ supports string_view in pre-c++17. +#if (FMT_HAS_INCLUDE(<string_view>) && \ + (__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \ + (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910) +# include <string_view> +# define FMT_USE_STRING_VIEW +#elif FMT_HAS_INCLUDE("experimental/string_view") && __cplusplus >= 201402L +# include <experimental/string_view> +# define FMT_USE_EXPERIMENTAL_STRING_VIEW +#endif + +#ifndef FMT_UNICODE +# define FMT_UNICODE !FMT_MSC_VER +#endif +#if FMT_UNICODE && FMT_MSC_VER +# pragma execution_character_set("utf-8") +#endif + +FMT_BEGIN_NAMESPACE + +// Implementations of enable_if_t and other metafunctions for older systems. +template <bool B, class T = void> +using enable_if_t = typename std::enable_if<B, T>::type; +template <bool B, class T, class F> +using conditional_t = typename std::conditional<B, T, F>::type; +template <bool B> using bool_constant = std::integral_constant<bool, B>; +template <typename T> +using remove_reference_t = typename std::remove_reference<T>::type; +template <typename T> +using remove_const_t = typename std::remove_const<T>::type; +template <typename T> +using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type; +template <typename T> struct type_identity { using type = T; }; +template <typename T> using type_identity_t = typename type_identity<T>::type; + +struct monostate {}; + +// An enable_if helper to be used in template parameters which results in much +// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed +// to workaround a bug in MSVC 2019 (see #1140 and #1186). +#define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 + +namespace detail { + +// A helper function to suppress "conditional expression is constant" warnings. +template <typename T> constexpr T const_check(T value) { return value; } + +FMT_NORETURN FMT_API void assert_fail(const char* file, int line, + const char* message); + +#ifndef FMT_ASSERT +# ifdef NDEBUG +// FMT_ASSERT is not empty to avoid -Werror=empty-body. +# define FMT_ASSERT(condition, message) ((void)0) +# else +# define FMT_ASSERT(condition, message) \ + ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \ + ? (void)0 \ + : ::fmt::detail::assert_fail(__FILE__, __LINE__, (message))) +# endif +#endif + +#if defined(FMT_USE_STRING_VIEW) +template <typename Char> using std_string_view = std::basic_string_view<Char>; +#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) +template <typename Char> +using std_string_view = std::experimental::basic_string_view<Char>; +#else +template <typename T> struct std_string_view {}; +#endif + +#ifdef FMT_USE_INT128 +// Do nothing. +#elif defined(__SIZEOF_INT128__) && !FMT_NVCC && \ + !(FMT_CLANG_VERSION && FMT_MSC_VER) +# define FMT_USE_INT128 1 +using int128_t = __int128_t; +using uint128_t = __uint128_t; +#else +# define FMT_USE_INT128 0 +#endif +#if !FMT_USE_INT128 +struct int128_t {}; +struct uint128_t {}; +#endif + +// Casts a nonnegative integer to unsigned. +template <typename Int> +FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) { + FMT_ASSERT(value >= 0, "negative value"); + return static_cast<typename std::make_unsigned<Int>::type>(value); +} + +FMT_SUPPRESS_MSC_WARNING(4566) constexpr unsigned char micro[] = "\u00B5"; + +template <typename Char> constexpr bool is_unicode() { + return FMT_UNICODE || sizeof(Char) != 1 || + (sizeof(micro) == 3 && micro[0] == 0xC2 && micro[1] == 0xB5); +} + +#ifdef __cpp_char8_t +using char8_type = char8_t; +#else +enum char8_type : unsigned char {}; +#endif +} // namespace detail + +#ifdef FMT_USE_INTERNAL +namespace internal = detail; // DEPRECATED +#endif + +/** + An implementation of ``std::basic_string_view`` for pre-C++17. It provides a + subset of the API. ``fmt::basic_string_view`` is used for format strings even + if ``std::string_view`` is available to prevent issues when a library is + compiled with a different ``-std`` option than the client code (which is not + recommended). + */ +template <typename Char> class basic_string_view { + private: + const Char* data_; + size_t size_; + + public: + using value_type = Char; + using iterator = const Char*; + + constexpr basic_string_view() FMT_NOEXCEPT : data_(nullptr), size_(0) {} + + /** Constructs a string reference object from a C string and a size. */ + constexpr basic_string_view(const Char* s, size_t count) FMT_NOEXCEPT + : data_(s), + size_(count) {} + + /** + \rst + Constructs a string reference object from a C string computing + the size with ``std::char_traits<Char>::length``. + \endrst + */ +#if __cplusplus >= 201703L // C++17's char_traits::length() is constexpr. + FMT_CONSTEXPR +#endif + basic_string_view(const Char* s) + : data_(s), size_(std::char_traits<Char>::length(s)) {} + + /** Constructs a string reference from a ``std::basic_string`` object. */ + template <typename Traits, typename Alloc> + FMT_CONSTEXPR basic_string_view( + const std::basic_string<Char, Traits, Alloc>& s) FMT_NOEXCEPT + : data_(s.data()), + size_(s.size()) {} + + template <typename S, FMT_ENABLE_IF(std::is_same< + S, detail::std_string_view<Char>>::value)> + FMT_CONSTEXPR basic_string_view(S s) FMT_NOEXCEPT : data_(s.data()), + size_(s.size()) {} + + /** Returns a pointer to the string data. */ + constexpr const Char* data() const { return data_; } + + /** Returns the string size. */ + constexpr size_t size() const { return size_; } + + constexpr iterator begin() const { return data_; } + constexpr iterator end() const { return data_ + size_; } + + constexpr const Char& operator[](size_t pos) const { return data_[pos]; } + + FMT_CONSTEXPR void remove_prefix(size_t n) { + data_ += n; + size_ -= n; + } + + // Lexicographically compare this string reference to other. + int compare(basic_string_view other) const { + size_t str_size = size_ < other.size_ ? size_ : other.size_; + int result = std::char_traits<Char>::compare(data_, other.data_, str_size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + friend bool operator==(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) == 0; + } + friend bool operator!=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) != 0; + } + friend bool operator<(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) < 0; + } + friend bool operator<=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) <= 0; + } + friend bool operator>(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) > 0; + } + friend bool operator>=(basic_string_view lhs, basic_string_view rhs) { + return lhs.compare(rhs) >= 0; + } +}; + +using string_view = basic_string_view<char>; +using wstring_view = basic_string_view<wchar_t>; + +/** Specifies if ``T`` is a character type. Can be specialized by users. */ +template <typename T> struct is_char : std::false_type {}; +template <> struct is_char<char> : std::true_type {}; +template <> struct is_char<wchar_t> : std::true_type {}; +template <> struct is_char<detail::char8_type> : std::true_type {}; +template <> struct is_char<char16_t> : std::true_type {}; +template <> struct is_char<char32_t> : std::true_type {}; + +/** + \rst + Returns a string view of `s`. In order to add custom string type support to + {fmt} provide an overload of `to_string_view` for it in the same namespace as + the type for the argument-dependent lookup to work. + + **Example**:: + + namespace my_ns { + inline string_view to_string_view(const my_string& s) { + return {s.data(), s.length()}; + } + } + std::string message = fmt::format(my_string("The answer is {}"), 42); + \endrst + */ +template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)> +inline basic_string_view<Char> to_string_view(const Char* s) { + return s; +} + +template <typename Char, typename Traits, typename Alloc> +inline basic_string_view<Char> to_string_view( + const std::basic_string<Char, Traits, Alloc>& s) { + return s; +} + +template <typename Char> +inline basic_string_view<Char> to_string_view(basic_string_view<Char> s) { + return s; +} + +template <typename Char, + FMT_ENABLE_IF(!std::is_empty<detail::std_string_view<Char>>::value)> +inline basic_string_view<Char> to_string_view(detail::std_string_view<Char> s) { + return s; +} + +// A base class for compile-time strings. It is defined in the fmt namespace to +// make formatting functions visible via ADL, e.g. format(FMT_STRING("{}"), 42). +struct compile_string {}; + +template <typename S> +struct is_compile_string : std::is_base_of<compile_string, S> {}; + +template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> +constexpr basic_string_view<typename S::char_type> to_string_view(const S& s) { + return s; +} + +namespace detail { +void to_string_view(...); +using fmt::v7::to_string_view; + +// Specifies whether S is a string type convertible to fmt::basic_string_view. +// It should be a constexpr function but MSVC 2017 fails to compile it in +// enable_if and MSVC 2015 fails to compile it as an alias template. +template <typename S> +struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> { +}; + +template <typename S, typename = void> struct char_t_impl {}; +template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> { + using result = decltype(to_string_view(std::declval<S>())); + using type = typename result::value_type; +}; + +// Reports a compile-time error if S is not a valid format string. +template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)> +FMT_INLINE void check_format_string(const S&) { +#ifdef FMT_ENFORCE_COMPILE_STRING + static_assert(is_compile_string<S>::value, + "FMT_ENFORCE_COMPILE_STRING requires all format strings to use " + "FMT_STRING."); +#endif +} +template <typename..., typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> +void check_format_string(S); + +struct error_handler { + constexpr error_handler() = default; + constexpr error_handler(const error_handler&) = default; + + // This function is intentionally not constexpr to give a compile-time error. + FMT_NORETURN FMT_API void on_error(const char* message); +}; +} // namespace detail + +/** String's character type. */ +template <typename S> using char_t = typename detail::char_t_impl<S>::type; + +/** + \rst + Parsing context consisting of a format string range being parsed and an + argument counter for automatic indexing. + + You can use one of the following type aliases for common character types: + + +-----------------------+-------------------------------------+ + | Type | Definition | + +=======================+=====================================+ + | format_parse_context | basic_format_parse_context<char> | + +-----------------------+-------------------------------------+ + | wformat_parse_context | basic_format_parse_context<wchar_t> | + +-----------------------+-------------------------------------+ + \endrst + */ +template <typename Char, typename ErrorHandler = detail::error_handler> +class basic_format_parse_context : private ErrorHandler { + private: + basic_string_view<Char> format_str_; + int next_arg_id_; + + public: + using char_type = Char; + using iterator = typename basic_string_view<Char>::iterator; + + explicit constexpr basic_format_parse_context( + basic_string_view<Char> format_str, ErrorHandler eh = {}, + int next_arg_id = 0) + : ErrorHandler(eh), format_str_(format_str), next_arg_id_(next_arg_id) {} + + /** + Returns an iterator to the beginning of the format string range being + parsed. + */ + constexpr iterator begin() const FMT_NOEXCEPT { return format_str_.begin(); } + + /** + Returns an iterator past the end of the format string range being parsed. + */ + constexpr iterator end() const FMT_NOEXCEPT { return format_str_.end(); } + + /** Advances the begin iterator to ``it``. */ + FMT_CONSTEXPR void advance_to(iterator it) { + format_str_.remove_prefix(detail::to_unsigned(it - begin())); + } + + /** + Reports an error if using the manual argument indexing; otherwise returns + the next argument index and switches to the automatic indexing. + */ + FMT_CONSTEXPR int next_arg_id() { + // Don't check if the argument id is valid to avoid overhead and because it + // will be checked during formatting anyway. + if (next_arg_id_ >= 0) return next_arg_id_++; + on_error("cannot switch from manual to automatic argument indexing"); + return 0; + } + + /** + Reports an error if using the automatic argument indexing; otherwise + switches to the manual indexing. + */ + FMT_CONSTEXPR void check_arg_id(int) { + if (next_arg_id_ > 0) + on_error("cannot switch from automatic to manual argument indexing"); + else + next_arg_id_ = -1; + } + + FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {} + + FMT_CONSTEXPR void on_error(const char* message) { + ErrorHandler::on_error(message); + } + + constexpr ErrorHandler error_handler() const { return *this; } +}; + +using format_parse_context = basic_format_parse_context<char>; +using wformat_parse_context = basic_format_parse_context<wchar_t>; + +template <typename Context> class basic_format_arg; +template <typename Context> class basic_format_args; +template <typename Context> class dynamic_format_arg_store; + +// A formatter for objects of type T. +template <typename T, typename Char = char, typename Enable = void> +struct formatter { + // A deleted default constructor indicates a disabled formatter. + formatter() = delete; +}; + +// Specifies if T has an enabled formatter specialization. A type can be +// formattable even if it doesn't have a formatter e.g. via a conversion. +template <typename T, typename Context> +using has_formatter = + std::is_constructible<typename Context::template formatter_type<T>>; + +// Checks whether T is a container with contiguous storage. +template <typename T> struct is_contiguous : std::false_type {}; +template <typename Char> +struct is_contiguous<std::basic_string<Char>> : std::true_type {}; + +namespace detail { + +// Extracts a reference to the container from back_insert_iterator. +template <typename Container> +inline Container& get_container(std::back_insert_iterator<Container> it) { + using bi_iterator = std::back_insert_iterator<Container>; + struct accessor : bi_iterator { + accessor(bi_iterator iter) : bi_iterator(iter) {} + using bi_iterator::container; + }; + return *accessor(it).container; +} + +/** + \rst + A contiguous memory buffer with an optional growing ability. It is an internal + class and shouldn't be used directly, only via `~fmt::basic_memory_buffer`. + \endrst + */ +template <typename T> class buffer { + private: + T* ptr_; + size_t size_; + size_t capacity_; + + protected: + // Don't initialize ptr_ since it is not accessed to save a few cycles. + FMT_SUPPRESS_MSC_WARNING(26495) + buffer(size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {} + + buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) FMT_NOEXCEPT + : ptr_(p), + size_(sz), + capacity_(cap) {} + + ~buffer() = default; + + /** Sets the buffer data and capacity. */ + void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT { + ptr_ = buf_data; + capacity_ = buf_capacity; + } + + /** Increases the buffer capacity to hold at least *capacity* elements. */ + virtual void grow(size_t capacity) = 0; + + public: + using value_type = T; + using const_reference = const T&; + + buffer(const buffer&) = delete; + void operator=(const buffer&) = delete; + + T* begin() FMT_NOEXCEPT { return ptr_; } + T* end() FMT_NOEXCEPT { return ptr_ + size_; } + + const T* begin() const FMT_NOEXCEPT { return ptr_; } + const T* end() const FMT_NOEXCEPT { return ptr_ + size_; } + + /** Returns the size of this buffer. */ + size_t size() const FMT_NOEXCEPT { return size_; } + + /** Returns the capacity of this buffer. */ + size_t capacity() const FMT_NOEXCEPT { return capacity_; } + + /** Returns a pointer to the buffer data. */ + T* data() FMT_NOEXCEPT { return ptr_; } + + /** Returns a pointer to the buffer data. */ + const T* data() const FMT_NOEXCEPT { return ptr_; } + + /** Clears this buffer. */ + void clear() { size_ = 0; } + + // Tries resizing the buffer to contain *count* elements. If T is a POD type + // the new elements may not be initialized. + void try_resize(size_t count) { + try_reserve(count); + size_ = count <= capacity_ ? count : capacity_; + } + + // Tries increasing the buffer capacity to *new_capacity*. It can increase the + // capacity by a smaller amount than requested but guarantees there is space + // for at least one additional element either by increasing the capacity or by + // flushing the buffer if it is full. + void try_reserve(size_t new_capacity) { + if (new_capacity > capacity_) grow(new_capacity); + } + + void push_back(const T& value) { + try_reserve(size_ + 1); + ptr_[size_++] = value; + } + + /** Appends data to the end of the buffer. */ + template <typename U> void append(const U* begin, const U* end); + + template <typename I> T& operator[](I index) { return ptr_[index]; } + template <typename I> const T& operator[](I index) const { + return ptr_[index]; + } +}; + +struct buffer_traits { + explicit buffer_traits(size_t) {} + size_t count() const { return 0; } + size_t limit(size_t size) { return size; } +}; + +class fixed_buffer_traits { + private: + size_t count_ = 0; + size_t limit_; + + public: + explicit fixed_buffer_traits(size_t limit) : limit_(limit) {} + size_t count() const { return count_; } + size_t limit(size_t size) { + size_t n = limit_ > count_ ? limit_ - count_ : 0; + count_ += size; + return size < n ? size : n; + } +}; + +// A buffer that writes to an output iterator when flushed. +template <typename OutputIt, typename T, typename Traits = buffer_traits> +class iterator_buffer final : public Traits, public buffer<T> { + private: + OutputIt out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + protected: + void grow(size_t) final FMT_OVERRIDE { + if (this->size() == buffer_size) flush(); + } + void flush(); + + public: + explicit iterator_buffer(OutputIt out, size_t n = buffer_size) + : Traits(n), + buffer<T>(data_, 0, buffer_size), + out_(out) {} + ~iterator_buffer() { flush(); } + + OutputIt out() { + flush(); + return out_; + } + size_t count() const { return Traits::count() + this->size(); } +}; + +template <typename T> class iterator_buffer<T*, T> final : public buffer<T> { + protected: + void grow(size_t) final FMT_OVERRIDE {} + + public: + explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {} + + T* out() { return &*this->end(); } +}; + +// A buffer that writes to a container with the contiguous storage. +template <typename Container> +class iterator_buffer<std::back_insert_iterator<Container>, + enable_if_t<is_contiguous<Container>::value, + typename Container::value_type>> + final : public buffer<typename Container::value_type> { + private: + Container& container_; + + protected: + void grow(size_t capacity) final FMT_OVERRIDE { + container_.resize(capacity); + this->set(&container_[0], capacity); + } + + public: + explicit iterator_buffer(Container& c) + : buffer<typename Container::value_type>(c.size()), container_(c) {} + explicit iterator_buffer(std::back_insert_iterator<Container> out, size_t = 0) + : iterator_buffer(get_container(out)) {} + std::back_insert_iterator<Container> out() { + return std::back_inserter(container_); + } +}; + +// A buffer that counts the number of code units written discarding the output. +template <typename T = char> class counting_buffer final : public buffer<T> { + private: + enum { buffer_size = 256 }; + T data_[buffer_size]; + size_t count_ = 0; + + protected: + void grow(size_t) final FMT_OVERRIDE { + if (this->size() != buffer_size) return; + count_ += this->size(); + this->clear(); + } + + public: + counting_buffer() : buffer<T>(data_, 0, buffer_size) {} + + size_t count() { return count_ + this->size(); } +}; + +// An output iterator that appends to the buffer. +// It is used to reduce symbol sizes for the common case. +template <typename T> +class buffer_appender : public std::back_insert_iterator<buffer<T>> { + using base = std::back_insert_iterator<buffer<T>>; + + public: + explicit buffer_appender(buffer<T>& buf) : base(buf) {} + buffer_appender(base it) : base(it) {} + + buffer_appender& operator++() { + base::operator++(); + return *this; + } + + buffer_appender operator++(int) { + buffer_appender tmp = *this; + ++*this; + return tmp; + } +}; + +// Maps an output iterator into a buffer. +template <typename T, typename OutputIt> +iterator_buffer<OutputIt, T> get_buffer(OutputIt); +template <typename T> buffer<T>& get_buffer(buffer_appender<T>); + +template <typename OutputIt> OutputIt get_buffer_init(OutputIt out) { + return out; +} +template <typename T> buffer<T>& get_buffer_init(buffer_appender<T> out) { + return get_container(out); +} + +template <typename Buffer> +auto get_iterator(Buffer& buf) -> decltype(buf.out()) { + return buf.out(); +} +template <typename T> buffer_appender<T> get_iterator(buffer<T>& buf) { + return buffer_appender<T>(buf); +} + +template <typename T, typename Char = char, typename Enable = void> +struct fallback_formatter { + fallback_formatter() = delete; +}; + +// Specifies if T has an enabled fallback_formatter specialization. +template <typename T, typename Context> +using has_fallback_formatter = + std::is_constructible<fallback_formatter<T, typename Context::char_type>>; + +struct view {}; + +template <typename Char, typename T> struct named_arg : view { + const Char* name; + const T& value; + named_arg(const Char* n, const T& v) : name(n), value(v) {} +}; + +template <typename Char> struct named_arg_info { + const Char* name; + int id; +}; + +template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> +struct arg_data { + // args_[0].named_args points to named_args_ to avoid bloating format_args. + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[1 + (NUM_ARGS != 0 ? NUM_ARGS : +1)]; + named_arg_info<Char> named_args_[NUM_NAMED_ARGS]; + + template <typename... U> + arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {} + arg_data(const arg_data& other) = delete; + const T* args() const { return args_ + 1; } + named_arg_info<Char>* named_args() { return named_args_; } +}; + +template <typename T, typename Char, size_t NUM_ARGS> +struct arg_data<T, Char, NUM_ARGS, 0> { + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[NUM_ARGS != 0 ? NUM_ARGS : +1]; + + template <typename... U> + FMT_INLINE arg_data(const U&... init) : args_{init...} {} + FMT_INLINE const T* args() const { return args_; } + FMT_INLINE std::nullptr_t named_args() { return nullptr; } +}; + +template <typename Char> +inline void init_named_args(named_arg_info<Char>*, int, int) {} + +template <typename Char, typename T, typename... Tail> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const T&, const Tail&... args) { + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename Char, typename T, typename... Tail> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const named_arg<Char, T>& arg, + const Tail&... args) { + named_args[named_arg_count++] = {arg.name, arg_count}; + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename... Args> +FMT_INLINE void init_named_args(std::nullptr_t, int, int, const Args&...) {} + +template <typename T> struct is_named_arg : std::false_type {}; + +template <typename T, typename Char> +struct is_named_arg<named_arg<Char, T>> : std::true_type {}; + +template <bool B = false> constexpr size_t count() { return B ? 1 : 0; } +template <bool B1, bool B2, bool... Tail> constexpr size_t count() { + return (B1 ? 1 : 0) + count<B2, Tail...>(); +} + +template <typename... Args> constexpr size_t count_named_args() { + return count<is_named_arg<Args>::value...>(); +} + +enum class type { + none_type, + // Integer types should go first, + int_type, + uint_type, + long_long_type, + ulong_long_type, + int128_type, + uint128_type, + bool_type, + char_type, + last_integer_type = char_type, + // followed by floating-point types. + float_type, + double_type, + long_double_type, + last_numeric_type = long_double_type, + cstring_type, + string_type, + pointer_type, + custom_type +}; + +// Maps core type T to the corresponding type enum constant. +template <typename T, typename Char> +struct type_constant : std::integral_constant<type, type::custom_type> {}; + +#define FMT_TYPE_CONSTANT(Type, constant) \ + template <typename Char> \ + struct type_constant<Type, Char> \ + : std::integral_constant<type, type::constant> {} + +FMT_TYPE_CONSTANT(int, int_type); +FMT_TYPE_CONSTANT(unsigned, uint_type); +FMT_TYPE_CONSTANT(long long, long_long_type); +FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type); +FMT_TYPE_CONSTANT(int128_t, int128_type); +FMT_TYPE_CONSTANT(uint128_t, uint128_type); +FMT_TYPE_CONSTANT(bool, bool_type); +FMT_TYPE_CONSTANT(Char, char_type); +FMT_TYPE_CONSTANT(float, float_type); +FMT_TYPE_CONSTANT(double, double_type); +FMT_TYPE_CONSTANT(long double, long_double_type); +FMT_TYPE_CONSTANT(const Char*, cstring_type); +FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type); +FMT_TYPE_CONSTANT(const void*, pointer_type); + +constexpr bool is_integral_type(type t) { + return t > type::none_type && t <= type::last_integer_type; +} + +constexpr bool is_arithmetic_type(type t) { + return t > type::none_type && t <= type::last_numeric_type; +} + +template <typename Char> struct string_value { + const Char* data; + size_t size; +}; + +template <typename Char> struct named_arg_value { + const named_arg_info<Char>* data; + size_t size; +}; + +template <typename Context> struct custom_value { + using parse_context = typename Context::parse_context_type; + const void* value; + void (*format)(const void* arg, parse_context& parse_ctx, Context& ctx); +}; + +// A formatting argument value. +template <typename Context> class value { + public: + using char_type = typename Context::char_type; + + union { + int int_value; + unsigned uint_value; + long long long_long_value; + unsigned long long ulong_long_value; + int128_t int128_value; + uint128_t uint128_value; + bool bool_value; + char_type char_value; + float float_value; + double double_value; + long double long_double_value; + const void* pointer; + string_value<char_type> string; + custom_value<Context> custom; + named_arg_value<char_type> named_args; + }; + + constexpr FMT_INLINE value(int val = 0) : int_value(val) {} + constexpr FMT_INLINE value(unsigned val) : uint_value(val) {} + FMT_INLINE value(long long val) : long_long_value(val) {} + FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {} + FMT_INLINE value(int128_t val) : int128_value(val) {} + FMT_INLINE value(uint128_t val) : uint128_value(val) {} + FMT_INLINE value(float val) : float_value(val) {} + FMT_INLINE value(double val) : double_value(val) {} + FMT_INLINE value(long double val) : long_double_value(val) {} + FMT_INLINE value(bool val) : bool_value(val) {} + FMT_INLINE value(char_type val) : char_value(val) {} + FMT_INLINE value(const char_type* val) { string.data = val; } + FMT_INLINE value(basic_string_view<char_type> val) { + string.data = val.data(); + string.size = val.size(); + } + FMT_INLINE value(const void* val) : pointer(val) {} + FMT_INLINE value(const named_arg_info<char_type>* args, size_t size) + : named_args{args, size} {} + + template <typename T> FMT_INLINE value(const T& val) { + custom.value = &val; + // Get the formatter type through the context to allow different contexts + // have different extension points, e.g. `formatter<T>` for `format` and + // `printf_formatter<T>` for `printf`. + custom.format = format_custom_arg< + T, conditional_t<has_formatter<T, Context>::value, + typename Context::template formatter_type<T>, + fallback_formatter<T, char_type>>>; + } + + private: + // Formats an argument of a custom type, such as a user-defined class. + template <typename T, typename Formatter> + static void format_custom_arg(const void* arg, + typename Context::parse_context_type& parse_ctx, + Context& ctx) { + Formatter f; + parse_ctx.advance_to(f.parse(parse_ctx)); + ctx.advance_to(f.format(*static_cast<const T*>(arg), ctx)); + } +}; + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value); + +// To minimize the number of types we need to deal with, long is translated +// either to int or to long long depending on its size. +enum { long_short = sizeof(long) == sizeof(int) }; +using long_type = conditional_t<long_short, int, long long>; +using ulong_type = conditional_t<long_short, unsigned, unsigned long long>; + +struct unformattable {}; + +// Maps formatting arguments to core types. +template <typename Context> struct arg_mapper { + using char_type = typename Context::char_type; + + FMT_CONSTEXPR int map(signed char val) { return val; } + FMT_CONSTEXPR unsigned map(unsigned char val) { return val; } + FMT_CONSTEXPR int map(short val) { return val; } + FMT_CONSTEXPR unsigned map(unsigned short val) { return val; } + FMT_CONSTEXPR int map(int val) { return val; } + FMT_CONSTEXPR unsigned map(unsigned val) { return val; } + FMT_CONSTEXPR long_type map(long val) { return val; } + FMT_CONSTEXPR ulong_type map(unsigned long val) { return val; } + FMT_CONSTEXPR long long map(long long val) { return val; } + FMT_CONSTEXPR unsigned long long map(unsigned long long val) { return val; } + FMT_CONSTEXPR int128_t map(int128_t val) { return val; } + FMT_CONSTEXPR uint128_t map(uint128_t val) { return val; } + FMT_CONSTEXPR bool map(bool val) { return val; } + + template <typename T, FMT_ENABLE_IF(is_char<T>::value)> + FMT_CONSTEXPR char_type map(T val) { + static_assert( + std::is_same<T, char>::value || std::is_same<T, char_type>::value, + "mixing character types is disallowed"); + return val; + } + + FMT_CONSTEXPR float map(float val) { return val; } + FMT_CONSTEXPR double map(double val) { return val; } + FMT_CONSTEXPR long double map(long double val) { return val; } + + FMT_CONSTEXPR const char_type* map(char_type* val) { return val; } + FMT_CONSTEXPR const char_type* map(const char_type* val) { return val; } + template <typename T, FMT_ENABLE_IF(is_string<T>::value)> + FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) { + static_assert(std::is_same<char_type, char_t<T>>::value, + "mixing character types is disallowed"); + return to_string_view(val); + } + template <typename T, + FMT_ENABLE_IF( + std::is_constructible<basic_string_view<char_type>, T>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, Context>::value)> + FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) { + return basic_string_view<char_type>(val); + } + template < + typename T, + FMT_ENABLE_IF( + std::is_constructible<std_string_view<char_type>, T>::value && + !std::is_constructible<basic_string_view<char_type>, T>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, Context>::value)> + FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) { + return std_string_view<char_type>(val); + } + FMT_CONSTEXPR const char* map(const signed char* val) { + static_assert(std::is_same<char_type, char>::value, "invalid string type"); + return reinterpret_cast<const char*>(val); + } + FMT_CONSTEXPR const char* map(const unsigned char* val) { + static_assert(std::is_same<char_type, char>::value, "invalid string type"); + return reinterpret_cast<const char*>(val); + } + FMT_CONSTEXPR const char* map(signed char* val) { + const auto* const_val = val; + return map(const_val); + } + FMT_CONSTEXPR const char* map(unsigned char* val) { + const auto* const_val = val; + return map(const_val); + } + + FMT_CONSTEXPR const void* map(void* val) { return val; } + FMT_CONSTEXPR const void* map(const void* val) { return val; } + FMT_CONSTEXPR const void* map(std::nullptr_t val) { return val; } + template <typename T> FMT_CONSTEXPR int map(const T*) { + // Formatting of arbitrary pointers is disallowed. If you want to output + // a pointer cast it to "void *" or "const void *". In particular, this + // forbids formatting of "[const] volatile char *" which is printed as bool + // by iostreams. + static_assert(!sizeof(T), "formatting of non-void pointers is disallowed"); + return 0; + } + + template <typename T, + FMT_ENABLE_IF(std::is_enum<T>::value && + !has_formatter<T, Context>::value && + !has_fallback_formatter<T, Context>::value)> + FMT_CONSTEXPR auto map(const T& val) + -> decltype(std::declval<arg_mapper>().map( + static_cast<typename std::underlying_type<T>::type>(val))) { + return map(static_cast<typename std::underlying_type<T>::type>(val)); + } + template <typename T, + FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value && + (has_formatter<T, Context>::value || + has_fallback_formatter<T, Context>::value))> + FMT_CONSTEXPR const T& map(const T& val) { + return val; + } + + template <typename T> + FMT_CONSTEXPR auto map(const named_arg<char_type, T>& val) + -> decltype(std::declval<arg_mapper>().map(val.value)) { + return map(val.value); + } + + unformattable map(...) { return {}; } +}; + +// A type constant after applying arg_mapper<Context>. +template <typename T, typename Context> +using mapped_type_constant = + type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())), + typename Context::char_type>; + +enum { packed_arg_bits = 4 }; +// Maximum number of arguments with packed types. +enum { max_packed_args = 62 / packed_arg_bits }; +enum : unsigned long long { is_unpacked_bit = 1ULL << 63 }; +enum : unsigned long long { has_named_args_bit = 1ULL << 62 }; +} // namespace detail + +// A formatting argument. It is a trivially copyable/constructible type to +// allow storage in basic_memory_buffer. +template <typename Context> class basic_format_arg { + private: + detail::value<Context> value_; + detail::type type_; + + template <typename ContextType, typename T> + friend FMT_CONSTEXPR basic_format_arg<ContextType> detail::make_arg( + const T& value); + + template <typename Visitor, typename Ctx> + friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, + const basic_format_arg<Ctx>& arg) + -> decltype(vis(0)); + + friend class basic_format_args<Context>; + friend class dynamic_format_arg_store<Context>; + + using char_type = typename Context::char_type; + + template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> + friend struct detail::arg_data; + + basic_format_arg(const detail::named_arg_info<char_type>* args, size_t size) + : value_(args, size) {} + + public: + class handle { + public: + explicit handle(detail::custom_value<Context> custom) : custom_(custom) {} + + void format(typename Context::parse_context_type& parse_ctx, + Context& ctx) const { + custom_.format(custom_.value, parse_ctx, ctx); + } + + private: + detail::custom_value<Context> custom_; + }; + + constexpr basic_format_arg() : type_(detail::type::none_type) {} + + constexpr explicit operator bool() const FMT_NOEXCEPT { + return type_ != detail::type::none_type; + } + + detail::type type() const { return type_; } + + bool is_integral() const { return detail::is_integral_type(type_); } + bool is_arithmetic() const { return detail::is_arithmetic_type(type_); } +}; + +/** + \rst + Visits an argument dispatching to the appropriate visit method based on + the argument type. For example, if the argument type is ``double`` then + ``vis(value)`` will be called with the value of type ``double``. + \endrst + */ +template <typename Visitor, typename Context> +FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( + Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) { + using char_type = typename Context::char_type; + switch (arg.type_) { + case detail::type::none_type: + break; + case detail::type::int_type: + return vis(arg.value_.int_value); + case detail::type::uint_type: + return vis(arg.value_.uint_value); + case detail::type::long_long_type: + return vis(arg.value_.long_long_value); + case detail::type::ulong_long_type: + return vis(arg.value_.ulong_long_value); +#if FMT_USE_INT128 + case detail::type::int128_type: + return vis(arg.value_.int128_value); + case detail::type::uint128_type: + return vis(arg.value_.uint128_value); +#else + case detail::type::int128_type: + case detail::type::uint128_type: + break; +#endif + case detail::type::bool_type: + return vis(arg.value_.bool_value); + case detail::type::char_type: + return vis(arg.value_.char_value); + case detail::type::float_type: + return vis(arg.value_.float_value); + case detail::type::double_type: + return vis(arg.value_.double_value); + case detail::type::long_double_type: + return vis(arg.value_.long_double_value); + case detail::type::cstring_type: + return vis(arg.value_.string.data); + case detail::type::string_type: + return vis(basic_string_view<char_type>(arg.value_.string.data, + arg.value_.string.size)); + case detail::type::pointer_type: + return vis(arg.value_.pointer); + case detail::type::custom_type: + return vis(typename basic_format_arg<Context>::handle(arg.value_.custom)); + } + return vis(monostate()); +} + +template <typename T> struct formattable : std::false_type {}; + +namespace detail { + +// A workaround for gcc 4.8 to make void_t work in a SFINAE context. +template <typename... Ts> struct void_t_impl { using type = void; }; +template <typename... Ts> +using void_t = typename detail::void_t_impl<Ts...>::type; + +template <typename It, typename T, typename Enable = void> +struct is_output_iterator : std::false_type {}; + +template <typename It, typename T> +struct is_output_iterator< + It, T, + void_t<typename std::iterator_traits<It>::iterator_category, + decltype(*std::declval<It>() = std::declval<T>())>> + : std::true_type {}; + +template <typename OutputIt> +struct is_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_back_insert_iterator<std::back_insert_iterator<Container>> + : std::true_type {}; + +template <typename OutputIt> +struct is_contiguous_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>> + : is_contiguous<Container> {}; +template <typename Char> +struct is_contiguous_back_insert_iterator<buffer_appender<Char>> + : std::true_type {}; + +// A type-erased reference to an std::locale to avoid heavy <locale> include. +class locale_ref { + private: + const void* locale_; // A type-erased pointer to std::locale. + + public: + locale_ref() : locale_(nullptr) {} + template <typename Locale> explicit locale_ref(const Locale& loc); + + explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; } + + template <typename Locale> Locale get() const; +}; + +template <typename> constexpr unsigned long long encode_types() { return 0; } + +template <typename Context, typename Arg, typename... Args> +constexpr unsigned long long encode_types() { + return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) | + (encode_types<Context, Args...>() << packed_arg_bits); +} + +template <typename Context, typename T> +FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value) { + basic_format_arg<Context> arg; + arg.type_ = mapped_type_constant<T, Context>::value; + arg.value_ = arg_mapper<Context>().map(value); + return arg; +} + +template <typename T> int check(unformattable) { + static_assert( + formattable<T>(), + "Cannot format an argument. To make type T formattable provide a " + "formatter<T> specialization: https://fmt.dev/latest/api.html#udt"); + return 0; +} +template <typename T, typename U> inline const U& check(const U& val) { + return val; +} + +// The type template parameter is there to avoid an ODR violation when using +// a fallback formatter in one translation unit and an implicit conversion in +// another (not recommended). +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(IS_PACKED)> +inline value<Context> make_arg(const T& val) { + return check<T>(arg_mapper<Context>().map(val)); +} + +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(!IS_PACKED)> +inline basic_format_arg<Context> make_arg(const T& value) { + return make_arg<Context>(value); +} + +template <typename T> struct is_reference_wrapper : std::false_type {}; +template <typename T> +struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {}; + +template <typename T> const T& unwrap(const T& v) { return v; } +template <typename T> const T& unwrap(const std::reference_wrapper<T>& v) { + return static_cast<const T&>(v); +} + +class dynamic_arg_list { + // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for + // templates it doesn't complain about inability to deduce single translation + // unit for placing vtable. So storage_node_base is made a fake template. + template <typename = void> struct node { + virtual ~node() = default; + std::unique_ptr<node<>> next; + }; + + template <typename T> struct typed_node : node<> { + T value; + + template <typename Arg> + FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} + + template <typename Char> + FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg) + : value(arg.data(), arg.size()) {} + }; + + std::unique_ptr<node<>> head_; + + public: + template <typename T, typename Arg> const T& push(const Arg& arg) { + auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg)); + auto& value = new_node->value; + new_node->next = std::move(head_); + head_ = std::move(new_node); + return value; + } +}; +} // namespace detail + +// Formatting context. +template <typename OutputIt, typename Char> class basic_format_context { + public: + /** The character type for the output. */ + using char_type = Char; + + private: + OutputIt out_; + basic_format_args<basic_format_context> args_; + detail::locale_ref loc_; + + public: + using iterator = OutputIt; + using format_arg = basic_format_arg<basic_format_context>; + using parse_context_type = basic_format_parse_context<Char>; + template <typename T> using formatter_type = formatter<T, char_type>; + + basic_format_context(const basic_format_context&) = delete; + void operator=(const basic_format_context&) = delete; + /** + Constructs a ``basic_format_context`` object. References to the arguments are + stored in the object so make sure they have appropriate lifetimes. + */ + basic_format_context(OutputIt out, + basic_format_args<basic_format_context> ctx_args, + detail::locale_ref loc = detail::locale_ref()) + : out_(out), args_(ctx_args), loc_(loc) {} + + format_arg arg(int id) const { return args_.get(id); } + format_arg arg(basic_string_view<char_type> name) { return args_.get(name); } + int arg_id(basic_string_view<char_type> name) { return args_.get_id(name); } + const basic_format_args<basic_format_context>& args() const { return args_; } + + detail::error_handler error_handler() { return {}; } + void on_error(const char* message) { error_handler().on_error(message); } + + // Returns an iterator to the beginning of the output range. + iterator out() { return out_; } + + // Advances the begin iterator to ``it``. + void advance_to(iterator it) { + if (!detail::is_back_insert_iterator<iterator>()) out_ = it; + } + + detail::locale_ref locale() { return loc_; } +}; + +template <typename Char> +using buffer_context = + basic_format_context<detail::buffer_appender<Char>, Char>; +using format_context = buffer_context<char>; +using wformat_context = buffer_context<wchar_t>; + +// Workaround an alias issue: https://stackoverflow.com/q/62767544/471164. +#define FMT_BUFFER_CONTEXT(Char) \ + basic_format_context<detail::buffer_appender<Char>, Char> + +/** + \rst + An array of references to arguments. It can be implicitly converted into + `~fmt::basic_format_args` for passing into type-erased formatting functions + such as `~fmt::vformat`. + \endrst + */ +template <typename Context, typename... Args> +class format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + static const size_t num_args = sizeof...(Args); + static const size_t num_named_args = detail::count_named_args<Args...>(); + static const bool is_packed = num_args <= detail::max_packed_args; + + using value_type = conditional_t<is_packed, detail::value<Context>, + basic_format_arg<Context>>; + + detail::arg_data<value_type, typename Context::char_type, num_args, + num_named_args> + data_; + + friend class basic_format_args<Context>; + + static constexpr unsigned long long desc = + (is_packed ? detail::encode_types<Context, Args...>() + : detail::is_unpacked_bit | num_args) | + (num_named_args != 0 + ? static_cast<unsigned long long>(detail::has_named_args_bit) + : 0); + + public: + format_arg_store(const Args&... args) + : +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + basic_format_args<Context>(*this), +#endif + data_{detail::make_arg< + is_packed, Context, + detail::mapped_type_constant<Args, Context>::value>(args)...} { + detail::init_named_args(data_.named_args(), 0, 0, args...); + } +}; + +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::format_args`. `Context` + can be omitted in which case it defaults to `~fmt::context`. + See `~fmt::arg` for lifetime considerations. + \endrst + */ +template <typename Context = format_context, typename... Args> +inline format_arg_store<Context, Args...> make_format_args( + const Args&... args) { + return {args...}; +} + +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references + to arguments and can be implicitly converted to `~fmt::format_args`. + If ``format_str`` is a compile-time string then `make_args_checked` checks + its validity at compile time. + \endrst + */ +template <typename... Args, typename S, typename Char = char_t<S>> +inline auto make_args_checked(const S& format_str, + const remove_reference_t<Args>&... args) + -> format_arg_store<buffer_context<Char>, remove_reference_t<Args>...> { + static_assert( + detail::count<( + std::is_base_of<detail::view, remove_reference_t<Args>>::value && + std::is_reference<Args>::value)...>() == 0, + "passing views as lvalues is disallowed"); + detail::check_format_string<Args...>(format_str); + return {args...}; +} + +/** + \rst + Returns a named argument to be used in a formatting function. It should only + be used in a call to a formatting function. + + **Example**:: + + fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23)); + \endrst + */ +template <typename Char, typename T> +inline detail::named_arg<Char, T> arg(const Char* name, const T& arg) { + static_assert(!detail::is_named_arg<T>(), "nested named arguments"); + return {name, arg}; +} + +/** + \rst + A dynamic version of `fmt::format_arg_store`. + It's equipped with a storage to potentially temporary objects which lifetimes + could be shorter than the format arguments object. + + It can be implicitly converted into `~fmt::basic_format_args` for passing + into type-erased formatting functions such as `~fmt::vformat`. + \endrst + */ +template <typename Context> +class dynamic_format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + using char_type = typename Context::char_type; + + template <typename T> struct need_copy { + static constexpr detail::type mapped_type = + detail::mapped_type_constant<T, Context>::value; + + enum { + value = !(detail::is_reference_wrapper<T>::value || + std::is_same<T, basic_string_view<char_type>>::value || + std::is_same<T, detail::std_string_view<char_type>>::value || + (mapped_type != detail::type::cstring_type && + mapped_type != detail::type::string_type && + mapped_type != detail::type::custom_type)) + }; + }; + + template <typename T> + using stored_type = conditional_t<detail::is_string<T>::value, + std::basic_string<char_type>, T>; + + // Storage of basic_format_arg must be contiguous. + std::vector<basic_format_arg<Context>> data_; + std::vector<detail::named_arg_info<char_type>> named_info_; + + // Storage of arguments not fitting into basic_format_arg must grow + // without relocation because items in data_ refer to it. + detail::dynamic_arg_list dynamic_args_; + + friend class basic_format_args<Context>; + + unsigned long long get_types() const { + return detail::is_unpacked_bit | data_.size() | + (named_info_.empty() + ? 0ULL + : static_cast<unsigned long long>(detail::has_named_args_bit)); + } + + const basic_format_arg<Context>* data() const { + return named_info_.empty() ? data_.data() : data_.data() + 1; + } + + template <typename T> void emplace_arg(const T& arg) { + data_.emplace_back(detail::make_arg<Context>(arg)); + } + + template <typename T> + void emplace_arg(const detail::named_arg<char_type, T>& arg) { + if (named_info_.empty()) { + constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr}; + data_.insert(data_.begin(), {zero_ptr, 0}); + } + data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value))); + auto pop_one = [](std::vector<basic_format_arg<Context>>* data) { + data->pop_back(); + }; + std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)> + guard{&data_, pop_one}; + named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)}); + data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; + guard.release(); + } + + public: + /** + \rst + Adds an argument into the dynamic store for later passing to a formatting + function. + + Note that custom types and string types (but not string views) are copied + into the store dynamically allocating memory if necessary. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(42); + store.push_back("abc"); + store.push_back(1.5f); + std::string result = fmt::vformat("{} and {} and {}", store); + \endrst + */ + template <typename T> void push_back(const T& arg) { + if (detail::const_check(need_copy<T>::value)) + emplace_arg(dynamic_args_.push<stored_type<T>>(arg)); + else + emplace_arg(detail::unwrap(arg)); + } + + /** + \rst + Adds a reference to the argument into the dynamic store for later passing to + a formatting function. Supports named arguments wrapped in + ``std::reference_wrapper`` via ``std::ref()``/``std::cref()``. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + char str[] = "1234567890"; + store.push_back(std::cref(str)); + int a1_val{42}; + auto a1 = fmt::arg("a1_", a1_val); + store.push_back(std::cref(a1)); + + // Changing str affects the output but only for string and custom types. + str[0] = 'X'; + + std::string result = fmt::vformat("{} and {a1_}"); + assert(result == "X234567890 and 42"); + \endrst + */ + template <typename T> void push_back(std::reference_wrapper<T> arg) { + static_assert( + detail::is_named_arg<typename std::remove_cv<T>::type>::value || + need_copy<T>::value, + "objects of built-in types and string views are always copied"); + emplace_arg(arg.get()); + } + + /** + Adds named argument into the dynamic store for later passing to a formatting + function. ``std::reference_wrapper`` is supported to avoid copying of the + argument. + */ + template <typename T> + void push_back(const detail::named_arg<char_type, T>& arg) { + const char_type* arg_name = + dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str(); + if (detail::const_check(need_copy<T>::value)) { + emplace_arg( + fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value))); + } else { + emplace_arg(fmt::arg(arg_name, arg.value)); + } + } + + /** Erase all elements from the store */ + void clear() { + data_.clear(); + named_info_.clear(); + dynamic_args_ = detail::dynamic_arg_list(); + } + + /** + \rst + Reserves space to store at least *new_cap* arguments including + *new_cap_named* named arguments. + \endrst + */ + void reserve(size_t new_cap, size_t new_cap_named) { + FMT_ASSERT(new_cap >= new_cap_named, + "Set of arguments includes set of named arguments"); + data_.reserve(new_cap); + named_info_.reserve(new_cap_named); + } +}; + +/** + \rst + A view of a collection of formatting arguments. To avoid lifetime issues it + should only be used as a parameter type in type-erased functions such as + ``vformat``:: + + void vlog(string_view format_str, format_args args); // OK + format_args args = make_format_args(42); // Error: dangling reference + \endrst + */ +template <typename Context> class basic_format_args { + public: + using size_type = int; + using format_arg = basic_format_arg<Context>; + + private: + // A descriptor that contains information about formatting arguments. + // If the number of arguments is less or equal to max_packed_args then + // argument types are passed in the descriptor. This reduces binary code size + // per formatting function call. + unsigned long long desc_; + union { + // If is_packed() returns true then argument values are stored in values_; + // otherwise they are stored in args_. This is done to improve cache + // locality and reduce compiled code size since storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const detail::value<Context>* values_; + const format_arg* args_; + }; + + bool is_packed() const { return (desc_ & detail::is_unpacked_bit) == 0; } + bool has_named_args() const { + return (desc_ & detail::has_named_args_bit) != 0; + } + + detail::type type(int index) const { + int shift = index * detail::packed_arg_bits; + unsigned int mask = (1 << detail::packed_arg_bits) - 1; + return static_cast<detail::type>((desc_ >> shift) & mask); + } + + basic_format_args(unsigned long long desc, + const detail::value<Context>* values) + : desc_(desc), values_(values) {} + basic_format_args(unsigned long long desc, const format_arg* args) + : desc_(desc), args_(args) {} + + public: + basic_format_args() : desc_(0) {} + + /** + \rst + Constructs a `basic_format_args` object from `~fmt::format_arg_store`. + \endrst + */ + template <typename... Args> + FMT_INLINE basic_format_args(const format_arg_store<Context, Args...>& store) + : basic_format_args(store.desc, store.data_.args()) {} + + /** + \rst + Constructs a `basic_format_args` object from + `~fmt::dynamic_format_arg_store`. + \endrst + */ + FMT_INLINE basic_format_args(const dynamic_format_arg_store<Context>& store) + : basic_format_args(store.get_types(), store.data()) {} + + /** + \rst + Constructs a `basic_format_args` object from a dynamic set of arguments. + \endrst + */ + basic_format_args(const format_arg* args, int count) + : basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count), + args) {} + + /** Returns the argument with the specified id. */ + format_arg get(int id) const { + format_arg arg; + if (!is_packed()) { + if (id < max_size()) arg = args_[id]; + return arg; + } + if (id >= detail::max_packed_args) return arg; + arg.type_ = type(id); + if (arg.type_ == detail::type::none_type) return arg; + arg.value_ = values_[id]; + return arg; + } + + template <typename Char> format_arg get(basic_string_view<Char> name) const { + int id = get_id(name); + return id >= 0 ? get(id) : format_arg(); + } + + template <typename Char> int get_id(basic_string_view<Char> name) const { + if (!has_named_args()) return -1; + const auto& named_args = + (is_packed() ? values_[-1] : args_[-1].value_).named_args; + for (size_t i = 0; i < named_args.size; ++i) { + if (named_args.data[i].name == name) return named_args.data[i].id; + } + return -1; + } + + int max_size() const { + unsigned long long max_packed = detail::max_packed_args; + return static_cast<int>(is_packed() ? max_packed + : desc_ & ~detail::is_unpacked_bit); + } +}; + +#ifdef FMT_ARM_ABI_COMPATIBILITY +/** An alias to ``basic_format_args<format_context>``. */ +// Separate types would result in shorter symbols but break ABI compatibility +// between clang and gcc on ARM (#1919). +using format_args = basic_format_args<format_context>; +using wformat_args = basic_format_args<wformat_context>; +#else +// DEPRECATED! These are kept for ABI compatibility. +// It is a separate type rather than an alias to make symbols readable. +struct format_args : basic_format_args<format_context> { + template <typename... Args> + FMT_INLINE format_args(const Args&... args) : basic_format_args(args...) {} +}; +struct wformat_args : basic_format_args<wformat_context> { + using basic_format_args::basic_format_args; +}; +#endif + +namespace detail { + +template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +std::basic_string<Char> vformat( + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args); + +FMT_API std::string vformat(string_view format_str, format_args args); + +template <typename Char> +void vformat_to( + buffer<Char>& buf, basic_string_view<Char> format_str, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args, + detail::locale_ref loc = {}); + +template <typename Char, typename Args, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +inline void vprint_mojibake(std::FILE*, basic_string_view<Char>, const Args&) {} + +FMT_API void vprint_mojibake(std::FILE*, string_view, format_args); +#ifndef _WIN32 +inline void vprint_mojibake(std::FILE*, string_view, format_args) {} +#endif +} // namespace detail + +/** Formats a string and writes the output to ``out``. */ +// GCC 8 and earlier cannot handle std::back_insert_iterator<Container> with +// vformat_to<ArgFormatter>(...) overload, so SFINAE on iterator type instead. +template <typename OutputIt, typename S, typename Char = char_t<S>, + bool enable = detail::is_output_iterator<OutputIt, Char>::value> +auto vformat_to(OutputIt out, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> typename std::enable_if<enable, OutputIt>::type { + decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out)); + detail::vformat_to(buf, to_string_view(format_str), args); + return detail::get_iterator(buf); +} + +/** + \rst + Formats arguments, writes the result to the output iterator ``out`` and returns + the iterator past the end of the output range. + + **Example**:: + + std::vector<char> out; + fmt::format_to(std::back_inserter(out), "{}", 42); + \endrst + */ +// We cannot use FMT_ENABLE_IF because of a bug in gcc 8.3. +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value> +inline auto format_to(OutputIt out, const S& format_str, Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return vformat_to(out, to_string_view(format_str), vargs); +} + +template <typename OutputIt> struct format_to_n_result { + /** Iterator past the end of the output range. */ + OutputIt out; + /** Total (not truncated) output size. */ + size_t size; +}; + +template <typename OutputIt, typename Char, typename... Args, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)> +inline format_to_n_result<OutputIt> vformat_to_n( + OutputIt out, size_t n, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + detail::iterator_buffer<OutputIt, Char, detail::fixed_buffer_traits> buf(out, + n); + detail::vformat_to(buf, format_str, args); + return {buf.out(), buf.count()}; +} + +/** + \rst + Formats arguments, writes up to ``n`` characters of the result to the output + iterator ``out`` and returns the total output size and the iterator past the + end of the output range. + \endrst + */ +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value> +inline auto format_to_n(OutputIt out, size_t n, const S& format_str, + const Args&... args) -> + typename std::enable_if<enable, format_to_n_result<OutputIt>>::type { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return vformat_to_n(out, n, to_string_view(format_str), vargs); +} + +/** + Returns the number of characters in the output of + ``format(format_str, args...)``. + */ +template <typename... Args> +inline size_t formatted_size(string_view format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + detail::counting_buffer<> buf; + detail::vformat_to(buf, format_str, vargs); + return buf.count(); +} + +template <typename S, typename Char = char_t<S>> +FMT_INLINE std::basic_string<Char> vformat( + const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + return detail::vformat(to_string_view(format_str), args); +} + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + #include <fmt/core.h> + std::string message = fmt::format("The answer is {}", 42); + \endrst +*/ +// Pass char_t as a default template parameter instead of using +// std::basic_string<char_t<S>> to reduce the symbol size. +template <typename S, typename... Args, typename Char = char_t<S>> +FMT_INLINE std::basic_string<Char> format(const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::vformat(to_string_view(format_str), vargs); +} + +FMT_API void vprint(string_view, format_args); +FMT_API void vprint(std::FILE*, string_view, format_args); + +/** + \rst + Formats ``args`` according to specifications in ``format_str`` and writes the + output to the file ``f``. Strings are assumed to be Unicode-encoded unless the + ``FMT_UNICODE`` macro is set to 0. + + **Example**:: + + fmt::print(stderr, "Don't {}!", "panic"); + \endrst + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline void print(std::FILE* f, const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::is_unicode<Char>() + ? vprint(f, to_string_view(format_str), vargs) + : detail::vprint_mojibake(f, to_string_view(format_str), vargs); +} + +/** + \rst + Formats ``args`` according to specifications in ``format_str`` and writes + the output to ``stdout``. Strings are assumed to be Unicode-encoded unless + the ``FMT_UNICODE`` macro is set to 0. + + **Example**:: + + fmt::print("Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline void print(const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + return detail::is_unicode<Char>() + ? vprint(to_string_view(format_str), vargs) + : detail::vprint_mojibake(stdout, to_string_view(format_str), + vargs); +} +FMT_END_NAMESPACE + +#endif // FMT_CORE_H_ diff --git a/src/3rdparty/fmt/format-inl.h b/src/3rdparty/fmt/format-inl.h new file mode 100644 index 000000000..8f2fe7354 --- /dev/null +++ b/src/3rdparty/fmt/format-inl.h @@ -0,0 +1,2801 @@ +// Formatting library for C++ - implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_FORMAT_INL_H_ +#define FMT_FORMAT_INL_H_ + +#include <cassert> +#include <cctype> +#include <climits> +#include <cmath> +#include <cstdarg> +#include <cstring> // std::memmove +#include <cwchar> +#include <exception> + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +# include <locale> +#endif + +#ifdef _WIN32 +# include <io.h> // _isatty +#endif + +#include "format.h" + +// Dummy implementations of strerror_r and strerror_s called if corresponding +// system functions are not available. +inline fmt::detail::null<> strerror_r(int, char*, ...) { return {}; } +inline fmt::detail::null<> strerror_s(char*, size_t, ...) { return {}; } + +FMT_BEGIN_NAMESPACE +namespace detail { + +FMT_FUNC void assert_fail(const char* file, int line, const char* message) { + // Use unchecked std::fprintf to avoid triggering another assertion when + // writing to stderr fails + std::fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message); + // Chosen instead of std::abort to satisfy Clang in CUDA mode during device + // code pass. + std::terminate(); +} + +#ifndef _MSC_VER +# define FMT_SNPRINTF snprintf +#else // _MSC_VER +inline int fmt_snprintf(char* buffer, size_t size, const char* format, ...) { + va_list args; + va_start(args, format); + int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); + va_end(args); + return result; +} +# define FMT_SNPRINTF fmt_snprintf +#endif // _MSC_VER + +// A portable thread-safe version of strerror. +// Sets buffer to point to a string describing the error code. +// This can be either a pointer to a string stored in buffer, +// or a pointer to some static immutable string. +// Returns one of the following values: +// 0 - success +// ERANGE - buffer is not large enough to store the error message +// other - failure +// Buffer should be at least of size 1. +inline int safe_strerror(int error_code, char*& buffer, + size_t buffer_size) FMT_NOEXCEPT { + FMT_ASSERT(buffer != nullptr && buffer_size != 0, "invalid buffer"); + + class dispatcher { + private: + int error_code_; + char*& buffer_; + size_t buffer_size_; + + // A noop assignment operator to avoid bogus warnings. + void operator=(const dispatcher&) {} + + // Handle the result of XSI-compliant version of strerror_r. + int handle(int result) { + // glibc versions before 2.13 return result in errno. + return result == -1 ? errno : result; + } + + // Handle the result of GNU-specific version of strerror_r. + FMT_MAYBE_UNUSED + int handle(char* message) { + // If the buffer is full then the message is probably truncated. + if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) + return ERANGE; + buffer_ = message; + return 0; + } + + // Handle the case when strerror_r is not available. + FMT_MAYBE_UNUSED + int handle(detail::null<>) { + return fallback(strerror_s(buffer_, buffer_size_, error_code_)); + } + + // Fallback to strerror_s when strerror_r is not available. + FMT_MAYBE_UNUSED + int fallback(int result) { + // If the buffer is full then the message is probably truncated. + return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE + : result; + } + +#if !FMT_MSC_VER + // Fallback to strerror if strerror_r and strerror_s are not available. + int fallback(detail::null<>) { + errno = 0; + buffer_ = strerror(error_code_); + return errno; + } +#endif + + public: + dispatcher(int err_code, char*& buf, size_t buf_size) + : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} + + int run() { return handle(strerror_r(error_code_, buffer_, buffer_size_)); } + }; + return dispatcher(error_code, buffer, buffer_size).run(); +} + +FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT { + // Report error code making sure that the output fits into + // inline_buffer_size to avoid dynamic memory allocation and potential + // bad_alloc. + out.try_resize(0); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + auto abs_value = static_cast<uint32_or_64_or_128_t<int>>(error_code); + if (detail::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += detail::to_unsigned(detail::count_digits(abs_value)); + auto it = buffer_appender<char>(out); + if (message.size() <= inline_buffer_size - error_code_size) + format_to(it, "{}{}", message, SEP); + format_to(it, "{}{}", ERROR_STR, error_code); + assert(out.size() <= inline_buffer_size); +} + +FMT_FUNC void report_error(format_func func, int error_code, + string_view message) FMT_NOEXCEPT { + memory_buffer full_message; + func(full_message, error_code, message); + // Don't use fwrite_fully because the latter may throw. + (void)std::fwrite(full_message.data(), full_message.size(), 1, stderr); + std::fputc('\n', stderr); +} + +// A wrapper around fwrite that throws on error. +inline void fwrite_fully(const void* ptr, size_t size, size_t count, + FILE* stream) { + size_t written = std::fwrite(ptr, size, count, stream); + if (written < count) FMT_THROW(system_error(errno, "cannot write to file")); +} +} // namespace detail + +#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) +namespace detail { + +template <typename Locale> +locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { + static_assert(std::is_same<Locale, std::locale>::value, ""); +} + +template <typename Locale> Locale locale_ref::get() const { + static_assert(std::is_same<Locale, std::locale>::value, ""); + return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale(); +} + +template <typename Char> FMT_FUNC std::string grouping_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()).grouping(); +} +template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) + .thousands_sep(); +} +template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) + .decimal_point(); +} +} // namespace detail +#else +template <typename Char> +FMT_FUNC std::string detail::grouping_impl(locale_ref) { + return "\03"; +} +template <typename Char> FMT_FUNC Char detail::thousands_sep_impl(locale_ref) { + return FMT_STATIC_THOUSANDS_SEPARATOR; +} +template <typename Char> FMT_FUNC Char detail::decimal_point_impl(locale_ref) { + return '.'; +} +#endif + +FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default; +FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT = default; + +FMT_FUNC void system_error::init(int err_code, string_view format_str, + format_args args) { + error_code_ = err_code; + memory_buffer buffer; + format_system_error(buffer, err_code, vformat(format_str, args)); + std::runtime_error& base = *this; + base = std::runtime_error(to_string(buffer)); +} + +namespace detail { + +template <> FMT_FUNC int count_digits<4>(detail::fallback_uintptr n) { + // fallback_uintptr is always stored in little endian. + int i = static_cast<int>(sizeof(void*)) - 1; + while (i > 0 && n.value[i] == 0) --i; + auto char_digits = std::numeric_limits<unsigned char>::digits / 4; + return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1; +} + +template <typename T> +const typename basic_data<T>::digit_pair basic_data<T>::digits[] = { + {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'}, + {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'}, + {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'}, + {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'}, + {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'}, + {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'}, + {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'}, + {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'}, + {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'}, + {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'}, + {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'}, + {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'}, + {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'}, + {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'}, + {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'}, + {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'}, + {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}}; + +template <typename T> +const char basic_data<T>::hex_digits[] = "0123456789abcdef"; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \ + (factor)*1000000, (factor)*10000000, (factor)*100000000, \ + (factor)*1000000000 + +template <typename T> +const uint64_t basic_data<T>::powers_of_10_64[] = { + 1, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + +template <typename T> +const uint32_t basic_data<T>::zero_or_powers_of_10_32[] = {0, + FMT_POWERS_OF_10(1)}; +template <typename T> +const uint64_t basic_data<T>::zero_or_powers_of_10_64[] = { + 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + +template <typename T> +const uint32_t basic_data<T>::zero_or_powers_of_10_32_new[] = { + 0, 0, FMT_POWERS_OF_10(1)}; + +template <typename T> +const uint64_t basic_data<T>::zero_or_powers_of_10_64_new[] = { + 0, 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + +// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. +// These are generated by support/compute-powers.py. +template <typename T> +const uint64_t basic_data<T>::grisu_pow10_significands[] = { + 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, + 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, + 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, + 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, + 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, + 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, + 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, + 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, + 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, + 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, + 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, + 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, + 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, + 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, + 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, + 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, + 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, + 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, + 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, + 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, + 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, + 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, + 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, + 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, + 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, + 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, + 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, + 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, + 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, +}; + +// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding +// to significands above. +template <typename T> +const int16_t basic_data<T>::grisu_pow10_exponents[] = { + -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, + -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, + -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, + -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, + -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, + 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, + 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, + 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; + +template <typename T> +const divtest_table_entry<uint32_t> basic_data<T>::divtest_table_for_pow5_32[] = + {{0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333}, + {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba}, + {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5}, + {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf}, + {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897}, + {0x3ed61f49, 0x000001b7}}; + +template <typename T> +const divtest_table_entry<uint64_t> basic_data<T>::divtest_table_for_pow5_64[] = + {{0x0000000000000001, 0xffffffffffffffff}, + {0xcccccccccccccccd, 0x3333333333333333}, + {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70}, + {0x1cac083126e978d5, 0x020c49ba5e353f7c}, + {0xd288ce703afb7e91, 0x0068db8bac710cb2}, + {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0}, + {0x790fb65668c26139, 0x000431bde82d7b63}, + {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a}, + {0xc767074b22e90e21, 0x00002af31dc46118}, + {0x8e47ce423a2e9c6d, 0x0000089705f4136b}, + {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b}, + {0x0fee64690c913975, 0x00000057f5ff85e5}, + {0x3662e0e1cf503eb1, 0x000000119799812d}, + {0xa47a2cf9f6433fbd, 0x0000000384b84d09}, + {0x54186f653140a659, 0x00000000b424dc35}, + {0x7738164770402145, 0x0000000024075f3d}, + {0xe4a4d1417cd9a041, 0x000000000734aca5}, + {0xc75429d9e5c5200d, 0x000000000170ef54}, + {0xc1773b91fac10669, 0x000000000049c977}, + {0x26b172506559ce15, 0x00000000000ec1e4}, + {0xd489e3a9addec2d1, 0x000000000002f394}, + {0x90e860bb892c8d5d, 0x000000000000971d}, + {0x502e79bf1b6f4f79, 0x0000000000001e39}, + {0xdcd618596be30fe5, 0x000000000000060b}}; + +template <typename T> +const uint64_t basic_data<T>::dragonbox_pow10_significands_64[] = { + 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, + 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, + 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, + 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, + 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, + 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, + 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, + 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, + 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, + 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, + 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, + 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, + 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, + 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, + 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, + 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, + 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, + 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, + 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, + 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984, + 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296, + 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6, + 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20, + 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd, + 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719, + 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e}; + +template <typename T> +const uint128_wrapper basic_data<T>::dragonbox_pow10_significands_128[] = { +#if FMT_USE_FULL_CACHE_DRAGONBOX + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0x9faacf3df73609b1, 0x77b191618c54e9ad}, + {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, + {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, + {0x9becce62836ac577, 0x4ee367f9430aec33}, + {0xc2e801fb244576d5, 0x229c41f793cda740}, + {0xf3a20279ed56d48a, 0x6b43527578c11110}, + {0x9845418c345644d6, 0x830a13896b78aaaa}, + {0xbe5691ef416bd60c, 0x23cc986bc656d554}, + {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, + {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, + {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, + {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, + {0x91376c36d99995be, 0x23100809b9c21fa2}, + {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, + {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, + {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, + {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, + {0xdd95317f31c7fa1d, 0x40405643d711d584}, + {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, + {0xad1c8eab5ee43b66, 0xda3243650005eed0}, + {0xd863b256369d4a40, 0x90bed43e40076a83}, + {0x873e4f75e2224e68, 0x5a7744a6e804a292}, + {0xa90de3535aaae202, 0x711515d0a205cb37}, + {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, + {0x8412d9991ed58091, 0xe858790afe9486c3}, + {0xa5178fff668ae0b6, 0x626e974dbe39a873}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, + {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, + {0xc987434744ac874e, 0xa327ffb266b56221}, + {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, + {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, + {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, + {0xf6019da07f549b2b, 0x7e2a53a146606a49}, + {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, + {0xc0314325637a1939, 0xfa911155fefb5309}, + {0xf03d93eebc589f88, 0x793555ab7eba27cb}, + {0x96267c7535b763b5, 0x4bc1558b2f3458df}, + {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, + {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, + {0x92a1958a7675175f, 0x0bfacd89ec191eca}, + {0xb749faed14125d36, 0xcef980ec671f667c}, + {0xe51c79a85916f484, 0x82b7e12780e7401b}, + {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, + {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, + {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, + {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1}, + {0xaecc49914078536d, 0x58fae9f773886e19}, + {0xda7f5bf590966848, 0xaf39a475506a899f}, + {0x888f99797a5e012d, 0x6d8406c952429604}, + {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84}, + {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65}, + {0x855c3be0a17fcd26, 0x5cf2eea09a550680}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0xd0601d8efc57b08b, 0xf13b94daf124da27}, + {0x823c12795db6ce57, 0x76c53d08d6b70859}, + {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f}, + {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a}, + {0xfe5d54150b090b02, 0xd3f93b35435d7c4d}, + {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0}, + {0xc6b8e9b0709f109a, 0x359ab6419ca1091c}, + {0xf867241c8cc6d4c0, 0xc30163d203c94b63}, + {0x9b407691d7fc44f8, 0x79e0de63425dcf1e}, + {0xc21094364dfb5636, 0x985915fc12f542e5}, + {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e}, + {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43}, + {0xbd8430bd08277231, 0x50c6ff782a838354}, + {0xece53cec4a314ebd, 0xa4f8bf5635246429}, + {0x940f4613ae5ed136, 0x871b7795e136be9a}, + {0xb913179899f68584, 0x28e2557b59846e40}, + {0xe757dd7ec07426e5, 0x331aeada2fe589d0}, + {0x9096ea6f3848984f, 0x3ff0d2c85def7622}, + {0xb4bca50b065abe63, 0x0fed077a756b53aa}, + {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895}, + {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d}, + {0xb080392cc4349dec, 0xbd8d794d96aacfb4}, + {0xdca04777f541c567, 0xecf0d7a0fc5583a1}, + {0x89e42caaf9491b60, 0xf41686c49db57245}, + {0xac5d37d5b79b6239, 0x311c2875c522ced6}, + {0xd77485cb25823ac7, 0x7d633293366b828c}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xa8530886b54dbdeb, 0xd9f57f830283fdfd}, + {0xd267caa862a12d66, 0xd072df63c324fd7c}, + {0x8380dea93da4bc60, 0x4247cb9e59f71e6e}, + {0xa46116538d0deb78, 0x52d9be85f074e609}, + {0xcd795be870516656, 0x67902e276c921f8c}, + {0x806bd9714632dff6, 0x00ba1cd8a3db53b7}, + {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5}, + {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce}, + {0xfad2a4b13d1b5d6c, 0x796b805720085f82}, + {0x9cc3a6eec6311a63, 0xcbe3303674053bb1}, + {0xc3f490aa77bd60fc, 0xbedbfc4411068a9d}, + {0xf4f1b4d515acb93b, 0xee92fb5515482d45}, + {0x991711052d8bf3c5, 0x751bdd152d4d1c4b}, + {0xbf5cd54678eef0b6, 0xd262d45a78a0635e}, + {0xef340a98172aace4, 0x86fb897116c87c35}, + {0x9580869f0e7aac0e, 0xd45d35e6ae3d4da1}, + {0xbae0a846d2195712, 0x8974836059cca10a}, + {0xe998d258869facd7, 0x2bd1a438703fc94c}, + {0x91ff83775423cc06, 0x7b6306a34627ddd0}, + {0xb67f6455292cbf08, 0x1a3bc84c17b1d543}, + {0xe41f3d6a7377eeca, 0x20caba5f1d9e4a94}, + {0x8e938662882af53e, 0x547eb47b7282ee9d}, + {0xb23867fb2a35b28d, 0xe99e619a4f23aa44}, + {0xdec681f9f4c31f31, 0x6405fa00e2ec94d5}, + {0x8b3c113c38f9f37e, 0xde83bc408dd3dd05}, + {0xae0b158b4738705e, 0x9624ab50b148d446}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0x87f8a8d4cfa417c9, 0xe54ca5d70a80e5d7}, + {0xa9f6d30a038d1dbc, 0x5e9fcf4ccd211f4d}, + {0xd47487cc8470652b, 0x7647c32000696720}, + {0x84c8d4dfd2c63f3b, 0x29ecd9f40041e074}, + {0xa5fb0a17c777cf09, 0xf468107100525891}, + {0xcf79cc9db955c2cc, 0x7182148d4066eeb5}, + {0x81ac1fe293d599bf, 0xc6f14cd848405531}, + {0xa21727db38cb002f, 0xb8ada00e5a506a7d}, + {0xca9cf1d206fdc03b, 0xa6d90811f0e4851d}, + {0xfd442e4688bd304a, 0x908f4a166d1da664}, + {0x9e4a9cec15763e2e, 0x9a598e4e043287ff}, + {0xc5dd44271ad3cdba, 0x40eff1e1853f29fe}, + {0xf7549530e188c128, 0xd12bee59e68ef47d}, + {0x9a94dd3e8cf578b9, 0x82bb74f8301958cf}, + {0xc13a148e3032d6e7, 0xe36a52363c1faf02}, + {0xf18899b1bc3f8ca1, 0xdc44e6c3cb279ac2}, + {0x96f5600f15a7b7e5, 0x29ab103a5ef8c0ba}, + {0xbcb2b812db11a5de, 0x7415d448f6b6f0e8}, + {0xebdf661791d60f56, 0x111b495b3464ad22}, + {0x936b9fcebb25c995, 0xcab10dd900beec35}, + {0xb84687c269ef3bfb, 0x3d5d514f40eea743}, + {0xe65829b3046b0afa, 0x0cb4a5a3112a5113}, + {0x8ff71a0fe2c2e6dc, 0x47f0e785eaba72ac}, + {0xb3f4e093db73a093, 0x59ed216765690f57}, + {0xe0f218b8d25088b8, 0x306869c13ec3532d}, + {0x8c974f7383725573, 0x1e414218c73a13fc}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0xdbac6c247d62a583, 0xdf45f746b74abf3a}, + {0x894bc396ce5da772, 0x6b8bba8c328eb784}, + {0xab9eb47c81f5114f, 0x066ea92f3f326565}, + {0xd686619ba27255a2, 0xc80a537b0efefebe}, + {0x8613fd0145877585, 0xbd06742ce95f5f37}, + {0xa798fc4196e952e7, 0x2c48113823b73705}, + {0xd17f3b51fca3a7a0, 0xf75a15862ca504c6}, + {0x82ef85133de648c4, 0x9a984d73dbe722fc}, + {0xa3ab66580d5fdaf5, 0xc13e60d0d2e0ebbb}, + {0xcc963fee10b7d1b3, 0x318df905079926a9}, + {0xffbbcfe994e5c61f, 0xfdf17746497f7053}, + {0x9fd561f1fd0f9bd3, 0xfeb6ea8bedefa634}, + {0xc7caba6e7c5382c8, 0xfe64a52ee96b8fc1}, + {0xf9bd690a1b68637b, 0x3dfdce7aa3c673b1}, + {0x9c1661a651213e2d, 0x06bea10ca65c084f}, + {0xc31bfa0fe5698db8, 0x486e494fcff30a63}, + {0xf3e2f893dec3f126, 0x5a89dba3c3efccfb}, + {0x986ddb5c6b3a76b7, 0xf89629465a75e01d}, + {0xbe89523386091465, 0xf6bbb397f1135824}, + {0xee2ba6c0678b597f, 0x746aa07ded582e2d}, + {0x94db483840b717ef, 0xa8c2a44eb4571cdd}, + {0xba121a4650e4ddeb, 0x92f34d62616ce414}, + {0xe896a0d7e51e1566, 0x77b020baf9c81d18}, + {0x915e2486ef32cd60, 0x0ace1474dc1d122f}, + {0xb5b5ada8aaff80b8, 0x0d819992132456bb}, + {0xe3231912d5bf60e6, 0x10e1fff697ed6c6a}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xb1736b96b6fd83b3, 0xbd308ff8a6b17cb3}, + {0xddd0467c64bce4a0, 0xac7cb3f6d05ddbdf}, + {0x8aa22c0dbef60ee4, 0x6bcdf07a423aa96c}, + {0xad4ab7112eb3929d, 0x86c16c98d2c953c7}, + {0xd89d64d57a607744, 0xe871c7bf077ba8b8}, + {0x87625f056c7c4a8b, 0x11471cd764ad4973}, + {0xa93af6c6c79b5d2d, 0xd598e40d3dd89bd0}, + {0xd389b47879823479, 0x4aff1d108d4ec2c4}, + {0x843610cb4bf160cb, 0xcedf722a585139bb}, + {0xa54394fe1eedb8fe, 0xc2974eb4ee658829}, + {0xce947a3da6a9273e, 0x733d226229feea33}, + {0x811ccc668829b887, 0x0806357d5a3f5260}, + {0xa163ff802a3426a8, 0xca07c2dcb0cf26f8}, + {0xc9bcff6034c13052, 0xfc89b393dd02f0b6}, + {0xfc2c3f3841f17c67, 0xbbac2078d443ace3}, + {0x9d9ba7832936edc0, 0xd54b944b84aa4c0e}, + {0xc5029163f384a931, 0x0a9e795e65d4df12}, + {0xf64335bcf065d37d, 0x4d4617b5ff4a16d6}, + {0x99ea0196163fa42e, 0x504bced1bf8e4e46}, + {0xc06481fb9bcf8d39, 0xe45ec2862f71e1d7}, + {0xf07da27a82c37088, 0x5d767327bb4e5a4d}, + {0x964e858c91ba2655, 0x3a6a07f8d510f870}, + {0xbbe226efb628afea, 0x890489f70a55368c}, + {0xeadab0aba3b2dbe5, 0x2b45ac74ccea842f}, + {0x92c8ae6b464fc96f, 0x3b0b8bc90012929e}, + {0xb77ada0617e3bbcb, 0x09ce6ebb40173745}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0x8f57fa54c2a9eab6, 0x9fa946824a12232e}, + {0xb32df8e9f3546564, 0x47939822dc96abfa}, + {0xdff9772470297ebd, 0x59787e2b93bc56f8}, + {0x8bfbea76c619ef36, 0x57eb4edb3c55b65b}, + {0xaefae51477a06b03, 0xede622920b6b23f2}, + {0xdab99e59958885c4, 0xe95fab368e45ecee}, + {0x88b402f7fd75539b, 0x11dbcb0218ebb415}, + {0xaae103b5fcd2a881, 0xd652bdc29f26a11a}, + {0xd59944a37c0752a2, 0x4be76d3346f04960}, + {0x857fcae62d8493a5, 0x6f70a4400c562ddc}, + {0xa6dfbd9fb8e5b88e, 0xcb4ccd500f6bb953}, + {0xd097ad07a71f26b2, 0x7e2000a41346a7a8}, + {0x825ecc24c873782f, 0x8ed400668c0c28c9}, + {0xa2f67f2dfa90563b, 0x728900802f0f32fb}, + {0xcbb41ef979346bca, 0x4f2b40a03ad2ffba}, + {0xfea126b7d78186bc, 0xe2f610c84987bfa9}, + {0x9f24b832e6b0f436, 0x0dd9ca7d2df4d7ca}, + {0xc6ede63fa05d3143, 0x91503d1c79720dbc}, + {0xf8a95fcf88747d94, 0x75a44c6397ce912b}, + {0x9b69dbe1b548ce7c, 0xc986afbe3ee11abb}, + {0xc24452da229b021b, 0xfbe85badce996169}, + {0xf2d56790ab41c2a2, 0xfae27299423fb9c4}, + {0x97c560ba6b0919a5, 0xdccd879fc967d41b}, + {0xbdb6b8e905cb600f, 0x5400e987bbc1c921}, + {0xed246723473e3813, 0x290123e9aab23b69}, + {0x9436c0760c86e30b, 0xf9a0b6720aaf6522}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0xe7958cb87392c2c2, 0xb60b1d1230b20e05}, + {0x90bd77f3483bb9b9, 0xb1c6f22b5e6f48c3}, + {0xb4ecd5f01a4aa828, 0x1e38aeb6360b1af4}, + {0xe2280b6c20dd5232, 0x25c6da63c38de1b1}, + {0x8d590723948a535f, 0x579c487e5a38ad0f}, + {0xb0af48ec79ace837, 0x2d835a9df0c6d852}, + {0xdcdb1b2798182244, 0xf8e431456cf88e66}, + {0x8a08f0f8bf0f156b, 0x1b8e9ecb641b5900}, + {0xac8b2d36eed2dac5, 0xe272467e3d222f40}, + {0xd7adf884aa879177, 0x5b0ed81dcc6abb10}, + {0x86ccbb52ea94baea, 0x98e947129fc2b4ea}, + {0xa87fea27a539e9a5, 0x3f2398d747b36225}, + {0xd29fe4b18e88640e, 0x8eec7f0d19a03aae}, + {0x83a3eeeef9153e89, 0x1953cf68300424ad}, + {0xa48ceaaab75a8e2b, 0x5fa8c3423c052dd8}, + {0xcdb02555653131b6, 0x3792f412cb06794e}, + {0x808e17555f3ebf11, 0xe2bbd88bbee40bd1}, + {0xa0b19d2ab70e6ed6, 0x5b6aceaeae9d0ec5}, + {0xc8de047564d20a8b, 0xf245825a5a445276}, + {0xfb158592be068d2e, 0xeed6e2f0f0d56713}, + {0x9ced737bb6c4183d, 0x55464dd69685606c}, + {0xc428d05aa4751e4c, 0xaa97e14c3c26b887}, + {0xf53304714d9265df, 0xd53dd99f4b3066a9}, + {0x993fe2c6d07b7fab, 0xe546a8038efe402a}, + {0xbf8fdb78849a5f96, 0xde98520472bdd034}, + {0xef73d256a5c0f77c, 0x963e66858f6d4441}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xbb127c53b17ec159, 0x5560c018580d5d53}, + {0xe9d71b689dde71af, 0xaab8f01e6e10b4a7}, + {0x9226712162ab070d, 0xcab3961304ca70e9}, + {0xb6b00d69bb55c8d1, 0x3d607b97c5fd0d23}, + {0xe45c10c42a2b3b05, 0x8cb89a7db77c506b}, + {0x8eb98a7a9a5b04e3, 0x77f3608e92adb243}, + {0xb267ed1940f1c61c, 0x55f038b237591ed4}, + {0xdf01e85f912e37a3, 0x6b6c46dec52f6689}, + {0x8b61313bbabce2c6, 0x2323ac4b3b3da016}, + {0xae397d8aa96c1b77, 0xabec975e0a0d081b}, + {0xd9c7dced53c72255, 0x96e7bd358c904a22}, + {0x881cea14545c7575, 0x7e50d64177da2e55}, + {0xaa242499697392d2, 0xdde50bd1d5d0b9ea}, + {0xd4ad2dbfc3d07787, 0x955e4ec64b44e865}, + {0x84ec3c97da624ab4, 0xbd5af13bef0b113f}, + {0xa6274bbdd0fadd61, 0xecb1ad8aeacdd58f}, + {0xcfb11ead453994ba, 0x67de18eda5814af3}, + {0x81ceb32c4b43fcf4, 0x80eacf948770ced8}, + {0xa2425ff75e14fc31, 0xa1258379a94d028e}, + {0xcad2f7f5359a3b3e, 0x096ee45813a04331}, + {0xfd87b5f28300ca0d, 0x8bca9d6e188853fd}, + {0x9e74d1b791e07e48, 0x775ea264cf55347e}, + {0xc612062576589dda, 0x95364afe032a819e}, + {0xf79687aed3eec551, 0x3a83ddbd83f52205}, + {0x9abe14cd44753b52, 0xc4926a9672793543}, + {0xc16d9a0095928a27, 0x75b7053c0f178294}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0x971da05074da7bee, 0xd3f6fc16ebca5e04}, + {0xbce5086492111aea, 0x88f4bb1ca6bcf585}, + 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0x7f1839a741a14d0d}, + {0xd31045a8341ca07c, 0x1ede48111209a050}, + {0x83ea2b892091e44d, 0x934aed0aab460432}, + {0xa4e4b66b68b65d60, 0xf81da84d5617853f}, + {0xce1de40642e3f4b9, 0x36251260ab9d668e}, + {0x80d2ae83e9ce78f3, 0xc1d72b7c6b426019}, + {0xa1075a24e4421730, 0xb24cf65b8612f81f}, + {0xc94930ae1d529cfc, 0xdee033f26797b627}, + {0xfb9b7cd9a4a7443c, 0x169840ef017da3b1}, + {0x9d412e0806e88aa5, 0x8e1f289560ee864e}, + {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e2}, + {0xf5b5d7ec8acb58a2, 0xae10af696774b1db}, + {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef29}, + {0xbff610b0cc6edd3f, 0x17fd090a58d32af3}, + {0xeff394dcff8a948e, 0xddfc4b4cef07f5b0}, + {0x95f83d0a1fb69cd9, 0x4abdaf101564f98e}, + {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f1}, + {0xea53df5fd18d5513, 0x84c86189216dc5ed}, + {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb4}, + {0xb7118682dbb66a77, 0x3fbc8c33221dc2a1}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, + {0x8f05b1163ba6832d, 0x29cb4d87f2a7400e}, + {0xb2c71d5bca9023f8, 0x743e20e9ef511012}, + {0xdf78e4b2bd342cf6, 0x914da9246b255416}, + {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548e}, + {0xae9672aba3d0c320, 0xa184ac2473b529b1}, + {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741e}, + {0x8865899617fb1871, 0x7e2fa67c7a658892}, + {0xaa7eebfb9df9de8d, 0xddbb901b98feeab7}, + {0xd51ea6fa85785631, 0x552a74227f3ea565}, + {0x8533285c936b35de, 0xd53a88958f87275f}, + {0xa67ff273b8460356, 0x8a892abaf368f137}, + {0xd01fef10a657842c, 0x2d2b7569b0432d85}, + {0x8213f56a67f6b29b, 0x9c3b29620e29fc73}, + {0xa298f2c501f45f42, 0x8349f3ba91b47b8f}, + {0xcb3f2f7642717713, 0x241c70a936219a73}, + {0xfe0efb53d30dd4d7, 0xed238cd383aa0110}, + {0x9ec95d1463e8a506, 0xf4363804324a40aa}, + {0xc67bb4597ce2ce48, 0xb143c6053edcd0d5}, + {0xf81aa16fdc1b81da, 0xdd94b7868e94050a}, + {0x9b10a4e5e9913128, 0xca7cf2b4191c8326}, + {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f0}, + {0xf24a01a73cf2dccf, 0xbc633b39673c8cec}, + {0x976e41088617ca01, 0xd5be0503e085d813}, + {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e18}, + {0xec9c459d51852ba2, 0xddf8e7d60ed1219e}, + {0x93e1ab8252f33b45, 0xcabb90e5c942b503}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, + {0xe7109bfba19c0c9d, 0x0cc512670a783ad4}, + {0x906a617d450187e2, 0x27fb2b80668b24c5}, + {0xb484f9dc9641e9da, 0xb1f9f660802dedf6}, + {0xe1a63853bbd26451, 0x5e7873f8a0396973}, + {0x8d07e33455637eb2, 0xdb0b487b6423e1e8}, + {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda62}, + {0xdc5c5301c56b75f7, 0x7641a140cc7810fb}, + {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9d}, + {0xac2820d9623bf429, 0x546345fa9fbdcd44}, + {0xd732290fbacaf133, 0xa97c177947ad4095}, + {0x867f59a9d4bed6c0, 0x49ed8eabcccc485d}, + {0xa81f301449ee8c70, 0x5c68f256bfff5a74}, + {0xd226fc195c6a2f8c, 0x73832eec6fff3111}, + {0x83585d8fd9c25db7, 0xc831fd53c5ff7eab}, + {0xa42e74f3d032f525, 0xba3e7ca8b77f5e55}, + {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35eb}, + {0x80444b5e7aa7cf85, 0x7980d163cf5b81b3}, + {0xa0555e361951c366, 0xd7e105bcc332621f}, + {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa7}, + {0xfa856334878fc150, 0xb14f98f6f0feb951}, + {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3}, + {0xc3b8358109e84f07, 0x0a862f80ec4700c8}, + {0xf4a642e14c6262c8, 0xcd27bb612758c0fa}, + {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c}, + {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3}, + {0xeeea5d5004981478, 0x1858ccfce06cac74}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc8}, + {0xbaa718e68396cffd, 0xd30560258f54e6ba}, + {0xe950df20247c83fd, 0x47c6b82ef32a2069}, + {0x91d28b7416cdd27e, 0x4cdc331d57fa5441}, + {0xb6472e511c81471d, 0xe0133fe4adf8e952}, + {0xe3d8f9e563a198e5, 0x58180fddd97723a6}, + {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648}, + {0xb201833b35d63f73, 0x2cd2cc6551e513da}, + {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1}, + {0x8b112e86420f6191, 0xfb04afaf27faf782}, + {0xadd57a27d29339f6, 0x79c5db9af1f9b563}, + {0xd94ad8b1c7380874, 0x18375281ae7822bc}, + {0x87cec76f1c830548, 0x8f2293910d0b15b5}, + {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22}, + {0xd433179d9c8cb841, 0x5fa60692a46151eb}, + {0x849feec281d7f328, 0xdbc7c41ba6bcd333}, + {0xa5c7ea73224deff3, 0x12b9b522906c0800}, + {0xcf39e50feae16bef, 0xd768226b34870a00}, + {0x81842f29f2cce375, 0xe6a1158300d46640}, + {0xa1e53af46f801c53, 0x60495ae3c1097fd0}, + {0xca5e89b18b602368, 0x385bb19cb14bdfc4}, + {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5}, + {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1}, + {0xc5a05277621be293, 0xc7098b7305241885}, + {0xf70867153aa2db38, 0xb8cbee4fc66d1ea7} +#else + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0xc350000000000000, 0x0000000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xfee50b7025c36a08, 0x02f236d04753d5b4}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86}, + {0xa6539930bf6bff45, 0x84db8346b786151c}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2}, + {0xd910f7ff28069da4, 0x1b2ba1518094da04}, + {0xaf58416654a6babb, 0x387ac8d1970027b2}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d2}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc8} +#endif +}; + +#if !FMT_USE_FULL_CACHE_DRAGONBOX +template <typename T> +const uint64_t basic_data<T>::powers_of_5_64[] = { + 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, + 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, + 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, + 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, + 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, + 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, + 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, + 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, + 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; + +template <typename T> +const uint32_t basic_data<T>::dragonbox_pow10_recovery_errors[] = { + 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001, + 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555, + 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110, + 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454, + 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014, + 0x69514555, 0x05151109, 0x00155555}; +#endif + +template <typename T> +const char basic_data<T>::foreground_color[] = "\x1b[38;2;"; +template <typename T> +const char basic_data<T>::background_color[] = "\x1b[48;2;"; +template <typename T> const char basic_data<T>::reset_color[] = "\x1b[0m"; +template <typename T> const wchar_t basic_data<T>::wreset_color[] = L"\x1b[0m"; +template <typename T> const char basic_data<T>::signs[] = {0, '-', '+', ' '}; +template <typename T> +const char basic_data<T>::left_padding_shifts[] = {31, 31, 0, 1, 0}; +template <typename T> +const char basic_data<T>::right_padding_shifts[] = {0, 31, 0, 1, 0}; + +template <typename T> struct bits { + static FMT_CONSTEXPR_DECL const int value = + static_cast<int>(sizeof(T) * std::numeric_limits<unsigned char>::digits); +}; + +class fp; +template <int SHIFT = 0> fp normalize(fp value); + +// Lower (upper) boundary is a value half way between a floating-point value +// and its predecessor (successor). Boundaries have the same exponent as the +// value so only significands are stored. +struct boundaries { + uint64_t lower; + uint64_t upper; +}; + +// A handmade floating-point number f * pow(2, e). +class fp { + private: + using significand_type = uint64_t; + + template <typename Float> + using is_supported_float = bool_constant<sizeof(Float) == sizeof(uint64_t) || + sizeof(Float) == sizeof(uint32_t)>; + + public: + significand_type f; + int e; + + // All sizes are in bits. + // Subtract 1 to account for an implicit most significant bit in the + // normalized form. + static FMT_CONSTEXPR_DECL const int double_significand_size = + std::numeric_limits<double>::digits - 1; + static FMT_CONSTEXPR_DECL const uint64_t implicit_bit = + 1ULL << double_significand_size; + static FMT_CONSTEXPR_DECL const int significand_size = + bits<significand_type>::value; + + fp() : f(0), e(0) {} + fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} + + // Constructs fp from an IEEE754 double. It is a template to prevent compile + // errors on platforms where double is not IEEE754. + template <typename Double> explicit fp(Double d) { assign(d); } + + // Assigns d to this and return true iff predecessor is closer than successor. + template <typename Float, FMT_ENABLE_IF(is_supported_float<Float>::value)> + bool assign(Float d) { + // Assume float is in the format [sign][exponent][significand]. + using limits = std::numeric_limits<Float>; + const int float_significand_size = limits::digits - 1; + const int exponent_size = + bits<Float>::value - float_significand_size - 1; // -1 for sign + const uint64_t float_implicit_bit = 1ULL << float_significand_size; + const uint64_t significand_mask = float_implicit_bit - 1; + const uint64_t exponent_mask = (~0ULL >> 1) & ~significand_mask; + const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1; + constexpr bool is_double = sizeof(Float) == sizeof(uint64_t); + auto u = bit_cast<conditional_t<is_double, uint64_t, uint32_t>>(d); + f = u & significand_mask; + int biased_e = + static_cast<int>((u & exponent_mask) >> float_significand_size); + // Predecessor is closer if d is a normalized power of 2 (f == 0) other than + // the smallest normalized number (biased_e > 1). + bool is_predecessor_closer = f == 0 && biased_e > 1; + if (biased_e != 0) + f += float_implicit_bit; + else + biased_e = 1; // Subnormals use biased exponent 1 (min exponent). + e = biased_e - exponent_bias - float_significand_size; + return is_predecessor_closer; + } + + template <typename Float, FMT_ENABLE_IF(!is_supported_float<Float>::value)> + bool assign(Float) { + *this = fp(); + return false; + } +}; + +// Normalizes the value converted from double and multiplied by (1 << SHIFT). +template <int SHIFT> fp normalize(fp value) { + // Handle subnormals. + const auto shifted_implicit_bit = fp::implicit_bit << SHIFT; + while ((value.f & shifted_implicit_bit) == 0) { + value.f <<= 1; + --value.e; + } + // Subtract 1 to account for hidden bit. + const auto offset = + fp::significand_size - fp::double_significand_size - SHIFT - 1; + value.f <<= offset; + value.e -= offset; + return value; +} + +inline bool operator==(fp x, fp y) { return x.f == y.f && x.e == y.e; } + +// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking. +inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { +#if FMT_USE_INT128 + auto product = static_cast<__uint128_t>(lhs) * rhs; + auto f = static_cast<uint64_t>(product >> 64); + return (static_cast<uint64_t>(product) & (1ULL << 63)) != 0 ? f + 1 : f; +#else + // Multiply 32-bit parts of significands. + uint64_t mask = (1ULL << 32) - 1; + uint64_t a = lhs >> 32, b = lhs & mask; + uint64_t c = rhs >> 32, d = rhs & mask; + uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; + // Compute mid 64-bit of result and round. + uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); + return ac + (ad >> 32) + (bc >> 32) + (mid >> 32); +#endif +} + +inline fp operator*(fp x, fp y) { return {multiply(x.f, y.f), x.e + y.e + 64}; } + +// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its +// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`. +inline fp get_cached_power(int min_exponent, int& pow10_exponent) { + const int shift = 32; + const auto significand = static_cast<int64_t>(data::log10_2_significand); + int index = static_cast<int>( + ((min_exponent + fp::significand_size - 1) * (significand >> shift) + + ((int64_t(1) << shift) - 1)) // ceil + >> 32 // arithmetic shift + ); + // Decimal exponent of the first (smallest) cached power of 10. + const int first_dec_exp = -348; + // Difference between 2 consecutive decimal exponents in cached powers of 10. + const int dec_exp_step = 8; + index = (index - first_dec_exp - 1) / dec_exp_step + 1; + pow10_exponent = first_dec_exp + index * dec_exp_step; + return {data::grisu_pow10_significands[index], + data::grisu_pow10_exponents[index]}; +} + +// A simple accumulator to hold the sums of terms in bigint::square if uint128_t +// is not available. +struct accumulator { + uint64_t lower; + uint64_t upper; + + accumulator() : lower(0), upper(0) {} + explicit operator uint32_t() const { return static_cast<uint32_t>(lower); } + + void operator+=(uint64_t n) { + lower += n; + if (lower < n) ++upper; + } + void operator>>=(int shift) { + assert(shift == 32); + (void)shift; + lower = (upper << 32) | (lower >> 32); + upper >>= 32; + } +}; + +class bigint { + private: + // A bigint is stored as an array of bigits (big digits), with bigit at index + // 0 being the least significant one. + using bigit = uint32_t; + using double_bigit = uint64_t; + enum { bigits_capacity = 32 }; + basic_memory_buffer<bigit, bigits_capacity> bigits_; + int exp_; + + bigit operator[](int index) const { return bigits_[to_unsigned(index)]; } + bigit& operator[](int index) { return bigits_[to_unsigned(index)]; } + + static FMT_CONSTEXPR_DECL const int bigit_bits = bits<bigit>::value; + + friend struct formatter<bigint>; + + void subtract_bigits(int index, bigit other, bigit& borrow) { + auto result = static_cast<double_bigit>((*this)[index]) - other - borrow; + (*this)[index] = static_cast<bigit>(result); + borrow = static_cast<bigit>(result >> (bigit_bits * 2 - 1)); + } + + void remove_leading_zeros() { + int num_bigits = static_cast<int>(bigits_.size()) - 1; + while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits; + bigits_.resize(to_unsigned(num_bigits + 1)); + } + + // Computes *this -= other assuming aligned bigints and *this >= other. + void subtract_aligned(const bigint& other) { + FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints"); + FMT_ASSERT(compare(*this, other) >= 0, ""); + bigit borrow = 0; + int i = other.exp_ - exp_; + for (size_t j = 0, n = other.bigits_.size(); j != n; ++i, ++j) + subtract_bigits(i, other.bigits_[j], borrow); + while (borrow > 0) subtract_bigits(i, 0, borrow); + remove_leading_zeros(); + } + + void multiply(uint32_t value) { + const double_bigit wide_value = value; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * wide_value + carry; + bigits_[i] = static_cast<bigit>(result); + carry = static_cast<bigit>(result >> bigit_bits); + } + if (carry != 0) bigits_.push_back(carry); + } + + void multiply(uint64_t value) { + const bigit mask = ~bigit(0); + const double_bigit lower = value & mask; + const double_bigit upper = value >> bigit_bits; + double_bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * lower + (carry & mask); + carry = + bigits_[i] * upper + (result >> bigit_bits) + (carry >> bigit_bits); + bigits_[i] = static_cast<bigit>(result); + } + while (carry != 0) { + bigits_.push_back(carry & mask); + carry >>= bigit_bits; + } + } + + public: + bigint() : exp_(0) {} + explicit bigint(uint64_t n) { assign(n); } + ~bigint() { assert(bigits_.capacity() <= bigits_capacity); } + + bigint(const bigint&) = delete; + void operator=(const bigint&) = delete; + + void assign(const bigint& other) { + auto size = other.bigits_.size(); + bigits_.resize(size); + auto data = other.bigits_.data(); + std::copy(data, data + size, make_checked(bigits_.data(), size)); + exp_ = other.exp_; + } + + void assign(uint64_t n) { + size_t num_bigits = 0; + do { + bigits_[num_bigits++] = n & ~bigit(0); + n >>= bigit_bits; + } while (n != 0); + bigits_.resize(num_bigits); + exp_ = 0; + } + + int num_bigits() const { return static_cast<int>(bigits_.size()) + exp_; } + + FMT_NOINLINE bigint& operator<<=(int shift) { + assert(shift >= 0); + exp_ += shift / bigit_bits; + shift %= bigit_bits; + if (shift == 0) return *this; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + bigit c = bigits_[i] >> (bigit_bits - shift); + bigits_[i] = (bigits_[i] << shift) + carry; + carry = c; + } + if (carry != 0) bigits_.push_back(carry); + return *this; + } + + template <typename Int> bigint& operator*=(Int value) { + FMT_ASSERT(value > 0, ""); + multiply(uint32_or_64_or_128_t<Int>(value)); + return *this; + } + + friend int compare(const bigint& lhs, const bigint& rhs) { + int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits(); + if (num_lhs_bigits != num_rhs_bigits) + return num_lhs_bigits > num_rhs_bigits ? 1 : -1; + int i = static_cast<int>(lhs.bigits_.size()) - 1; + int j = static_cast<int>(rhs.bigits_.size()) - 1; + int end = i - j; + if (end < 0) end = 0; + for (; i >= end; --i, --j) { + bigit lhs_bigit = lhs[i], rhs_bigit = rhs[j]; + if (lhs_bigit != rhs_bigit) return lhs_bigit > rhs_bigit ? 1 : -1; + } + if (i != j) return i > j ? 1 : -1; + return 0; + } + + // Returns compare(lhs1 + lhs2, rhs). + friend int add_compare(const bigint& lhs1, const bigint& lhs2, + const bigint& rhs) { + int max_lhs_bigits = (std::max)(lhs1.num_bigits(), lhs2.num_bigits()); + int num_rhs_bigits = rhs.num_bigits(); + if (max_lhs_bigits + 1 < num_rhs_bigits) return -1; + if (max_lhs_bigits > num_rhs_bigits) return 1; + auto get_bigit = [](const bigint& n, int i) -> bigit { + return i >= n.exp_ && i < n.num_bigits() ? n[i - n.exp_] : 0; + }; + double_bigit borrow = 0; + int min_exp = (std::min)((std::min)(lhs1.exp_, lhs2.exp_), rhs.exp_); + for (int i = num_rhs_bigits - 1; i >= min_exp; --i) { + double_bigit sum = + static_cast<double_bigit>(get_bigit(lhs1, i)) + get_bigit(lhs2, i); + bigit rhs_bigit = get_bigit(rhs, i); + if (sum > rhs_bigit + borrow) return 1; + borrow = rhs_bigit + borrow - sum; + if (borrow > 1) return -1; + borrow <<= bigit_bits; + } + return borrow != 0 ? -1 : 0; + } + + // Assigns pow(10, exp) to this bigint. + void assign_pow10(int exp) { + assert(exp >= 0); + if (exp == 0) return assign(1); + // Find the top bit. + int bitmask = 1; + while (exp >= bitmask) bitmask <<= 1; + bitmask >>= 1; + // pow(10, exp) = pow(5, exp) * pow(2, exp). First compute pow(5, exp) by + // repeated squaring and multiplication. + assign(5); + bitmask >>= 1; + while (bitmask != 0) { + square(); + if ((exp & bitmask) != 0) *this *= 5; + bitmask >>= 1; + } + *this <<= exp; // Multiply by pow(2, exp) by shifting. + } + + void square() { + basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_)); + int num_bigits = static_cast<int>(bigits_.size()); + int num_result_bigits = 2 * num_bigits; + bigits_.resize(to_unsigned(num_result_bigits)); + using accumulator_t = conditional_t<FMT_USE_INT128, uint128_t, accumulator>; + auto sum = accumulator_t(); + for (int bigit_index = 0; bigit_index < num_bigits; ++bigit_index) { + // Compute bigit at position bigit_index of the result by adding + // cross-product terms n[i] * n[j] such that i + j == bigit_index. + for (int i = 0, j = bigit_index; j >= 0; ++i, --j) { + // Most terms are multiplied twice which can be optimized in the future. + sum += static_cast<double_bigit>(n[i]) * n[j]; + } + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= bits<bigit>::value; // Compute the carry. + } + // Do the same for the top half. + for (int bigit_index = num_bigits; bigit_index < num_result_bigits; + ++bigit_index) { + for (int j = num_bigits - 1, i = bigit_index - j; i < num_bigits;) + sum += static_cast<double_bigit>(n[i++]) * n[j--]; + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= bits<bigit>::value; + } + --num_result_bigits; + remove_leading_zeros(); + exp_ *= 2; + } + + // If this bigint has a bigger exponent than other, adds trailing zero to make + // exponents equal. This simplifies some operations such as subtraction. + void align(const bigint& other) { + int exp_difference = exp_ - other.exp_; + if (exp_difference <= 0) return; + int num_bigits = static_cast<int>(bigits_.size()); + bigits_.resize(to_unsigned(num_bigits + exp_difference)); + for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j) + bigits_[j] = bigits_[i]; + std::uninitialized_fill_n(bigits_.data(), exp_difference, 0); + exp_ -= exp_difference; + } + + // Divides this bignum by divisor, assigning the remainder to this and + // returning the quotient. + int divmod_assign(const bigint& divisor) { + FMT_ASSERT(this != &divisor, ""); + if (compare(*this, divisor) < 0) return 0; + FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, ""); + align(divisor); + int quotient = 0; + do { + subtract_aligned(divisor); + ++quotient; + } while (compare(*this, divisor) >= 0); + return quotient; + } +}; + +enum class round_direction { unknown, up, down }; + +// Given the divisor (normally a power of 10), the remainder = v % divisor for +// some number v and the error, returns whether v should be rounded up, down, or +// whether the rounding direction can't be determined due to error. +// error should be less than divisor / 2. +inline round_direction get_round_direction(uint64_t divisor, uint64_t remainder, + uint64_t error) { + FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow. + FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow. + FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow. + // Round down if (remainder + error) * 2 <= divisor. + if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2) + return round_direction::down; + // Round up if (remainder - error) * 2 >= divisor. + if (remainder >= error && + remainder - error >= divisor - (remainder - error)) { + return round_direction::up; + } + return round_direction::unknown; +} + +namespace digits { +enum result { + more, // Generate more digits. + done, // Done generating digits. + error // Digit generation cancelled due to an error. +}; +} + +// Generates output using the Grisu digit-gen algorithm. +// error: the size of the region (lower, upper) outside of which numbers +// definitely do not round to value (Delta in Grisu3). +template <typename Handler> +FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, + int& exp, Handler& handler) { + const fp one(1ULL << -value.e, value.e); + // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be + // zero because it contains a product of two 64-bit numbers with MSB set (due + // to normalization) - 1, shifted right by at most 60 bits. + auto integral = static_cast<uint32_t>(value.f >> -one.e); + FMT_ASSERT(integral != 0, ""); + FMT_ASSERT(integral == value.f >> -one.e, ""); + // The fractional part of scaled value (p2 in Grisu) c = value % one. + uint64_t fractional = value.f & (one.f - 1); + exp = count_digits(integral); // kappa in Grisu. + // Divide by 10 to prevent overflow. + auto result = handler.on_start(data::powers_of_10_64[exp - 1] << -one.e, + value.f / 10, error * 10, exp); + if (result != digits::more) return result; + // Generate digits for the integral part. This can produce up to 10 digits. + do { + uint32_t digit = 0; + auto divmod_integral = [&](uint32_t divisor) { + digit = integral / divisor; + integral %= divisor; + }; + // This optimization by Milo Yip reduces the number of integer divisions by + // one per iteration. + switch (exp) { + case 10: + divmod_integral(1000000000); + break; + case 9: + divmod_integral(100000000); + break; + case 8: + divmod_integral(10000000); + break; + case 7: + divmod_integral(1000000); + break; + case 6: + divmod_integral(100000); + break; + case 5: + divmod_integral(10000); + break; + case 4: + divmod_integral(1000); + break; + case 3: + divmod_integral(100); + break; + case 2: + divmod_integral(10); + break; + case 1: + digit = integral; + integral = 0; + break; + default: + FMT_ASSERT(false, "invalid number of digits"); + } + --exp; + auto remainder = (static_cast<uint64_t>(integral) << -one.e) + fractional; + result = handler.on_digit(static_cast<char>('0' + digit), + data::powers_of_10_64[exp] << -one.e, remainder, + error, exp, true); + if (result != digits::more) return result; + } while (exp > 0); + // Generate digits for the fractional part. + for (;;) { + fractional *= 10; + error *= 10; + char digit = static_cast<char>('0' + (fractional >> -one.e)); + fractional &= one.f - 1; + --exp; + result = handler.on_digit(digit, one.f, fractional, error, exp, false); + if (result != digits::more) return result; + } +} + +// The fixed precision digit handler. +struct fixed_handler { + char* buf; + int size; + int precision; + int exp10; + bool fixed; + + digits::result on_start(uint64_t divisor, uint64_t remainder, uint64_t error, + int& exp) { + // Non-fixed formats require at least one digit and no precision adjustment. + if (!fixed) return digits::more; + // Adjust fixed precision by exponent because it is relative to decimal + // point. + precision += exp + exp10; + // Check if precision is satisfied just by leading zeros, e.g. + // format("{:.2f}", 0.001) gives "0.00" without generating any digits. + if (precision > 0) return digits::more; + if (precision < 0) return digits::done; + auto dir = get_round_direction(divisor, remainder, error); + if (dir == round_direction::unknown) return digits::error; + buf[size++] = dir == round_direction::up ? '1' : '0'; + return digits::done; + } + + digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder, + uint64_t error, int, bool integral) { + FMT_ASSERT(remainder < divisor, ""); + buf[size++] = digit; + if (!integral && error >= remainder) return digits::error; + if (size < precision) return digits::more; + if (!integral) { + // Check if error * 2 < divisor with overflow prevention. + // The check is not needed for the integral part because error = 1 + // and divisor > (1 << 32) there. + if (error >= divisor || error >= divisor - error) return digits::error; + } else { + FMT_ASSERT(error == 1 && divisor > 2, ""); + } + auto dir = get_round_direction(divisor, remainder, error); + if (dir != round_direction::up) + return dir == round_direction::down ? digits::done : digits::error; + ++buf[size - 1]; + for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] > '9') { + buf[0] = '1'; + if (fixed) + buf[size++] = '0'; + else + ++exp10; + } + return digits::done; + } +}; + +// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox. +namespace dragonbox { +// Computes 128-bit result of multiplication of two 64-bit unsigned integers. +FMT_SAFEBUFFERS inline uint128_wrapper umul128(uint64_t x, + uint64_t y) FMT_NOEXCEPT { +#if FMT_USE_INT128 + return static_cast<uint128_t>(x) * static_cast<uint128_t>(y); +#elif defined(_MSC_VER) && defined(_M_X64) + uint128_wrapper result; + result.low_ = _umul128(x, y, &result.high_); + return result; +#else + const uint64_t mask = (uint64_t(1) << 32) - uint64_t(1); + + uint64_t a = x >> 32; + uint64_t b = x & mask; + uint64_t c = y >> 32; + uint64_t d = y & mask; + + uint64_t ac = a * c; + uint64_t bc = b * c; + uint64_t ad = a * d; + uint64_t bd = b * d; + + uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask); + + return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32), + (intermediate << 32) + (bd & mask)}; +#endif +} + +// Computes upper 64 bits of multiplication of two 64-bit unsigned integers. +FMT_SAFEBUFFERS inline uint64_t umul128_upper64(uint64_t x, + uint64_t y) FMT_NOEXCEPT { +#if FMT_USE_INT128 + auto p = static_cast<uint128_t>(x) * static_cast<uint128_t>(y); + return static_cast<uint64_t>(p >> 64); +#elif defined(_MSC_VER) && defined(_M_X64) + return __umulh(x, y); +#else + return umul128(x, y).high(); +#endif +} + +// Computes upper 64 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +FMT_SAFEBUFFERS inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y) + FMT_NOEXCEPT { + uint128_wrapper g0 = umul128(x, y.high()); + g0 += umul128_upper64(x, y.low()); + return g0.high(); +} + +// Computes upper 32 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint32_t umul96_upper32(uint32_t x, uint64_t y) FMT_NOEXCEPT { + return static_cast<uint32_t>(umul128_upper64(x, y)); +} + +// Computes middle 64 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +FMT_SAFEBUFFERS inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y) + FMT_NOEXCEPT { + uint64_t g01 = x * y.high(); + uint64_t g10 = umul128_upper64(x, y.low()); + return g01 + g10; +} + +// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint64_t umul96_lower64(uint32_t x, uint64_t y) FMT_NOEXCEPT { + return x * y; +} + +// Computes floor(log10(pow(2, e))) for e in [-1700, 1700] using the method from +// https://fmt.dev/papers/Grisu-Exact.pdf#page=5, section 3.4. +inline int floor_log10_pow2(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); + const int shift = 22; + return (e * static_cast<int>(data::log10_2_significand >> (64 - shift))) >> + shift; +} + +// Various fast log computations. +inline int floor_log2_pow10(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent"); + const uint64_t log2_10_integer_part = 3; + const uint64_t log2_10_fractional_digits = 0x5269e12f346e2bf9; + const int shift_amount = 19; + return (e * static_cast<int>( + (log2_10_integer_part << shift_amount) | + (log2_10_fractional_digits >> (64 - shift_amount)))) >> + shift_amount; +} +inline int floor_log10_pow2_minus_log10_4_over_3(int e) FMT_NOEXCEPT { + FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); + const uint64_t log10_4_over_3_fractional_digits = 0x1ffbfc2bbc780375; + const int shift_amount = 22; + return (e * static_cast<int>(data::log10_2_significand >> + (64 - shift_amount)) - + static_cast<int>(log10_4_over_3_fractional_digits >> + (64 - shift_amount))) >> + shift_amount; +} + +// Returns true iff x is divisible by pow(2, exp). +inline bool divisible_by_power_of_2(uint32_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp >= 1, ""); + FMT_ASSERT(x != 0, ""); +#ifdef FMT_BUILTIN_CTZ + return FMT_BUILTIN_CTZ(x) >= exp; +#else + return exp < num_bits<uint32_t>() && x == ((x >> exp) << exp); +#endif +} +inline bool divisible_by_power_of_2(uint64_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp >= 1, ""); + FMT_ASSERT(x != 0, ""); +#ifdef FMT_BUILTIN_CTZLL + return FMT_BUILTIN_CTZLL(x) >= exp; +#else + return exp < num_bits<uint64_t>() && x == ((x >> exp) << exp); +#endif +} + +// Returns true iff x is divisible by pow(5, exp). +inline bool divisible_by_power_of_5(uint32_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp <= 10, "too large exponent"); + return x * data::divtest_table_for_pow5_32[exp].mod_inv <= + data::divtest_table_for_pow5_32[exp].max_quotient; +} +inline bool divisible_by_power_of_5(uint64_t x, int exp) FMT_NOEXCEPT { + FMT_ASSERT(exp <= 23, "too large exponent"); + return x * data::divtest_table_for_pow5_64[exp].mod_inv <= + data::divtest_table_for_pow5_64[exp].max_quotient; +} + +// Replaces n by floor(n / pow(5, N)) returning true if and only if n is +// divisible by pow(5, N). +// Precondition: n <= 2 * pow(5, N + 1). +template <int N> +bool check_divisibility_and_divide_by_pow5(uint32_t& n) FMT_NOEXCEPT { + static constexpr struct { + uint32_t magic_number; + int bits_for_comparison; + uint32_t threshold; + int shift_amount; + } infos[] = {{0xcccd, 16, 0x3333, 18}, {0xa429, 8, 0x0a, 20}}; + constexpr auto info = infos[N - 1]; + n *= info.magic_number; + const uint32_t comparison_mask = (1u << info.bits_for_comparison) - 1; + bool result = (n & comparison_mask) <= info.threshold; + n >>= info.shift_amount; + return result; +} + +// Computes floor(n / pow(10, N)) for small n and N. +// Precondition: n <= pow(10, N + 1). +template <int N> uint32_t small_division_by_pow10(uint32_t n) FMT_NOEXCEPT { + static constexpr struct { + uint32_t magic_number; + int shift_amount; + uint32_t divisor_times_10; + } infos[] = {{0xcccd, 19, 100}, {0xa3d8, 22, 1000}}; + constexpr auto info = infos[N - 1]; + FMT_ASSERT(n <= info.divisor_times_10, "n is too large"); + return n * info.magic_number >> info.shift_amount; +} + +// Computes floor(n / 10^(kappa + 1)) (float) +inline uint32_t divide_by_10_to_kappa_plus_1(uint32_t n) FMT_NOEXCEPT { + return n / float_info<float>::big_divisor; +} +// Computes floor(n / 10^(kappa + 1)) (double) +inline uint64_t divide_by_10_to_kappa_plus_1(uint64_t n) FMT_NOEXCEPT { + return umul128_upper64(n, 0x83126e978d4fdf3c) >> 9; +} + +// Various subroutines using pow10 cache +template <class T> struct cache_accessor; + +template <> struct cache_accessor<float> { + using carrier_uint = float_info<float>::carrier_uint; + using cache_entry_type = uint64_t; + + static uint64_t get_cached_power(int k) FMT_NOEXCEPT { + FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k, + "k is out of range"); + return data::dragonbox_pow10_significands_64[k - float_info<float>::min_k]; + } + + static carrier_uint compute_mul(carrier_uint u, + const cache_entry_type& cache) FMT_NOEXCEPT { + return umul96_upper32(u, cache); + } + + static uint32_t compute_delta(const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + return static_cast<uint32_t>(cache >> (64 - 1 - beta_minus_1)); + } + + static bool compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + FMT_ASSERT(beta_minus_1 >= 1, ""); + FMT_ASSERT(beta_minus_1 < 64, ""); + + return ((umul96_lower64(two_f, cache) >> (64 - beta_minus_1)) & 1) != 0; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return static_cast<carrier_uint>( + (cache - (cache >> (float_info<float>::significand_bits + 2))) >> + (64 - float_info<float>::significand_bits - 1 - beta_minus_1)); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return static_cast<carrier_uint>( + (cache + (cache >> (float_info<float>::significand_bits + 1))) >> + (64 - float_info<float>::significand_bits - 1 - beta_minus_1)); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (static_cast<carrier_uint>( + cache >> + (64 - float_info<float>::significand_bits - 2 - beta_minus_1)) + + 1) / + 2; + } +}; + +template <> struct cache_accessor<double> { + using carrier_uint = float_info<double>::carrier_uint; + using cache_entry_type = uint128_wrapper; + + static uint128_wrapper get_cached_power(int k) FMT_NOEXCEPT { + FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k, + "k is out of range"); + +#if FMT_USE_FULL_CACHE_DRAGONBOX + return data::dragonbox_pow10_significands_128[k - + float_info<double>::min_k]; +#else + static const int compression_ratio = 27; + + // Compute base index. + int cache_index = (k - float_info<double>::min_k) / compression_ratio; + int kb = cache_index * compression_ratio + float_info<double>::min_k; + int offset = k - kb; + + // Get base cache. + uint128_wrapper base_cache = + data::dragonbox_pow10_significands_128[cache_index]; + if (offset == 0) return base_cache; + + // Compute the required amount of bit-shift. + int alpha = floor_log2_pow10(kb + offset) - floor_log2_pow10(kb) - offset; + FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected"); + + // Try to recover the real cache. + uint64_t pow5 = data::powers_of_5_64[offset]; + uint128_wrapper recovered_cache = umul128(base_cache.high(), pow5); + uint128_wrapper middle_low = + umul128(base_cache.low() - (kb < 0 ? 1u : 0u), pow5); + + recovered_cache += middle_low.high(); + + uint64_t high_to_middle = recovered_cache.high() << (64 - alpha); + uint64_t middle_to_low = recovered_cache.low() << (64 - alpha); + + recovered_cache = + uint128_wrapper{(recovered_cache.low() >> alpha) | high_to_middle, + ((middle_low.low() >> alpha) | middle_to_low)}; + + if (kb < 0) recovered_cache += 1; + + // Get error. + int error_idx = (k - float_info<double>::min_k) / 16; + uint32_t error = (data::dragonbox_pow10_recovery_errors[error_idx] >> + ((k - float_info<double>::min_k) % 16) * 2) & + 0x3; + + // Add the error back. + FMT_ASSERT(recovered_cache.low() + error >= recovered_cache.low(), ""); + return {recovered_cache.high(), recovered_cache.low() + error}; +#endif + } + + static carrier_uint compute_mul(carrier_uint u, + const cache_entry_type& cache) FMT_NOEXCEPT { + return umul192_upper64(u, cache); + } + + static uint32_t compute_delta(cache_entry_type const& cache, + int beta_minus_1) FMT_NOEXCEPT { + return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta_minus_1)); + } + + static bool compute_mul_parity(carrier_uint two_f, + const cache_entry_type& cache, + int beta_minus_1) FMT_NOEXCEPT { + FMT_ASSERT(beta_minus_1 >= 1, ""); + FMT_ASSERT(beta_minus_1 < 64, ""); + + return ((umul192_middle64(two_f, cache) >> (64 - beta_minus_1)) & 1) != 0; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (cache.high() - + (cache.high() >> (float_info<double>::significand_bits + 2))) >> + (64 - float_info<double>::significand_bits - 1 - beta_minus_1); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return (cache.high() + + (cache.high() >> (float_info<double>::significand_bits + 1))) >> + (64 - float_info<double>::significand_bits - 1 - beta_minus_1); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta_minus_1) FMT_NOEXCEPT { + return ((cache.high() >> + (64 - float_info<double>::significand_bits - 2 - beta_minus_1)) + + 1) / + 2; + } +}; + +// Various integer checks +template <class T> +bool is_left_endpoint_integer_shorter_interval(int exponent) FMT_NOEXCEPT { + return exponent >= + float_info< + T>::case_shorter_interval_left_endpoint_lower_threshold && + exponent <= + float_info<T>::case_shorter_interval_left_endpoint_upper_threshold; +} +template <class T> +bool is_endpoint_integer(typename float_info<T>::carrier_uint two_f, + int exponent, int minus_k) FMT_NOEXCEPT { + if (exponent < float_info<T>::case_fc_pm_half_lower_threshold) return false; + // For k >= 0. + if (exponent <= float_info<T>::case_fc_pm_half_upper_threshold) return true; + // For k < 0. + if (exponent > float_info<T>::divisibility_check_by_5_threshold) return false; + return divisible_by_power_of_5(two_f, minus_k); +} + +template <class T> +bool is_center_integer(typename float_info<T>::carrier_uint two_f, int exponent, + int minus_k) FMT_NOEXCEPT { + // Exponent for 5 is negative. + if (exponent > float_info<T>::divisibility_check_by_5_threshold) return false; + if (exponent > float_info<T>::case_fc_upper_threshold) + return divisible_by_power_of_5(two_f, minus_k); + // Both exponents are nonnegative. + if (exponent >= float_info<T>::case_fc_lower_threshold) return true; + // Exponent for 2 is negative. + return divisible_by_power_of_2(two_f, minus_k - exponent + 1); +} + +// Remove trailing zeros from n and return the number of zeros removed (float) +FMT_ALWAYS_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT { +#ifdef FMT_BUILTIN_CTZ + int t = FMT_BUILTIN_CTZ(n); +#else + int t = ctz(n); +#endif + if (t > float_info<float>::max_trailing_zeros) + t = float_info<float>::max_trailing_zeros; + + const uint32_t mod_inv1 = 0xcccccccd; + const uint32_t max_quotient1 = 0x33333333; + const uint32_t mod_inv2 = 0xc28f5c29; + const uint32_t max_quotient2 = 0x0a3d70a3; + + int s = 0; + for (; s < t - 1; s += 2) { + if (n * mod_inv2 > max_quotient2) break; + n *= mod_inv2; + } + if (s < t && n * mod_inv1 <= max_quotient1) { + n *= mod_inv1; + ++s; + } + n >>= s; + return s; +} + +// Removes trailing zeros and returns the number of zeros removed (double) +FMT_ALWAYS_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT { +#ifdef FMT_BUILTIN_CTZLL + int t = FMT_BUILTIN_CTZLL(n); +#else + int t = ctzll(n); +#endif + if (t > float_info<double>::max_trailing_zeros) + t = float_info<double>::max_trailing_zeros; + // Divide by 10^8 and reduce to 32-bits + // Since ret_value.significand <= (2^64 - 1) / 1000 < 10^17, + // both of the quotient and the r should fit in 32-bits + + const uint32_t mod_inv1 = 0xcccccccd; + const uint32_t max_quotient1 = 0x33333333; + const uint64_t mod_inv8 = 0xc767074b22e90e21; + const uint64_t max_quotient8 = 0x00002af31dc46118; + + // If the number is divisible by 1'0000'0000, work with the quotient + if (t >= 8) { + auto quotient_candidate = n * mod_inv8; + + if (quotient_candidate <= max_quotient8) { + auto quotient = static_cast<uint32_t>(quotient_candidate >> 8); + + int s = 8; + for (; s < t; ++s) { + if (quotient * mod_inv1 > max_quotient1) break; + quotient *= mod_inv1; + } + quotient >>= (s - 8); + n = quotient; + return s; + } + } + + // Otherwise, work with the remainder + auto quotient = static_cast<uint32_t>(n / 100000000); + auto remainder = static_cast<uint32_t>(n - 100000000 * quotient); + + if (t == 0 || remainder * mod_inv1 > max_quotient1) { + return 0; + } + remainder *= mod_inv1; + + if (t == 1 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 1) + quotient * 10000000ull; + return 1; + } + remainder *= mod_inv1; + + if (t == 2 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 2) + quotient * 1000000ull; + return 2; + } + remainder *= mod_inv1; + + if (t == 3 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 3) + quotient * 100000ull; + return 3; + } + remainder *= mod_inv1; + + if (t == 4 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 4) + quotient * 10000ull; + return 4; + } + remainder *= mod_inv1; + + if (t == 5 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 5) + quotient * 1000ull; + return 5; + } + remainder *= mod_inv1; + + if (t == 6 || remainder * mod_inv1 > max_quotient1) { + n = (remainder >> 6) + quotient * 100ull; + return 6; + } + remainder *= mod_inv1; + + n = (remainder >> 7) + quotient * 10ull; + return 7; +} + +// The main algorithm for shorter interval case +template <class T> +FMT_ALWAYS_INLINE FMT_SAFEBUFFERS decimal_fp<T> shorter_interval_case( + int exponent) FMT_NOEXCEPT { + decimal_fp<T> ret_value; + // Compute k and beta + const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent); + const int beta_minus_1 = exponent + floor_log2_pow10(-minus_k); + + // Compute xi and zi + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + + auto xi = cache_accessor<T>::compute_left_endpoint_for_shorter_interval_case( + cache, beta_minus_1); + auto zi = cache_accessor<T>::compute_right_endpoint_for_shorter_interval_case( + cache, beta_minus_1); + + // If the left endpoint is not an integer, increase it + if (!is_left_endpoint_integer_shorter_interval<T>(exponent)) ++xi; + + // Try bigger divisor + ret_value.significand = zi / 10; + + // If succeed, remove trailing zeros if necessary and return + if (ret_value.significand * 10 >= xi) { + ret_value.exponent = minus_k + 1; + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + } + + // Otherwise, compute the round-up of y + ret_value.significand = + cache_accessor<T>::compute_round_up_for_shorter_interval_case( + cache, beta_minus_1); + ret_value.exponent = minus_k; + + // When tie occurs, choose one of them according to the rule + if (exponent >= float_info<T>::shorter_interval_tie_lower_threshold && + exponent <= float_info<T>::shorter_interval_tie_upper_threshold) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } else if (ret_value.significand < xi) { + ++ret_value.significand; + } + return ret_value; +} + +template <typename T> +FMT_SAFEBUFFERS decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT { + // Step 1: integer promotion & Schubfach multiplier calculation. + + using carrier_uint = typename float_info<T>::carrier_uint; + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + auto br = bit_cast<carrier_uint>(x); + + // Extract significand bits and exponent bits. + const carrier_uint significand_mask = + (static_cast<carrier_uint>(1) << float_info<T>::significand_bits) - 1; + carrier_uint significand = (br & significand_mask); + int exponent = static_cast<int>((br & exponent_mask<T>()) >> + float_info<T>::significand_bits); + + if (exponent != 0) { // Check if normal. + exponent += float_info<T>::exponent_bias - float_info<T>::significand_bits; + + // Shorter interval case; proceed like Schubfach. + if (significand == 0) return shorter_interval_case<T>(exponent); + + significand |= + (static_cast<carrier_uint>(1) << float_info<T>::significand_bits); + } else { + // Subnormal case; the interval is always regular. + if (significand == 0) return {0, 0}; + exponent = float_info<T>::min_exponent - float_info<T>::significand_bits; + } + + const bool include_left_endpoint = (significand % 2 == 0); + const bool include_right_endpoint = include_left_endpoint; + + // Compute k and beta. + const int minus_k = floor_log10_pow2(exponent) - float_info<T>::kappa; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + const int beta_minus_1 = exponent + floor_log2_pow10(-minus_k); + + // Compute zi and deltai + // 10^kappa <= deltai < 10^(kappa + 1) + const uint32_t deltai = cache_accessor<T>::compute_delta(cache, beta_minus_1); + const carrier_uint two_fc = significand << 1; + const carrier_uint two_fr = two_fc | 1; + const carrier_uint zi = + cache_accessor<T>::compute_mul(two_fr << beta_minus_1, cache); + + // Step 2: Try larger divisor; remove trailing zeros if necessary + + // Using an upper bound on zi, we might be able to optimize the division + // better than the compiler; we are computing zi / big_divisor here + decimal_fp<T> ret_value; + ret_value.significand = divide_by_10_to_kappa_plus_1(zi); + uint32_t r = static_cast<uint32_t>(zi - float_info<T>::big_divisor * + ret_value.significand); + + if (r > deltai) { + goto small_divisor_case_label; + } else if (r < deltai) { + // Exclude the right endpoint if necessary + if (r == 0 && !include_right_endpoint && + is_endpoint_integer<T>(two_fr, exponent, minus_k)) { + --ret_value.significand; + r = float_info<T>::big_divisor; + goto small_divisor_case_label; + } + } else { + // r == deltai; compare fractional parts + // Check conditions in the order different from the paper + // to take advantage of short-circuiting + const carrier_uint two_fl = two_fc - 1; + if ((!include_left_endpoint || + !is_endpoint_integer<T>(two_fl, exponent, minus_k)) && + !cache_accessor<T>::compute_mul_parity(two_fl, cache, beta_minus_1)) { + goto small_divisor_case_label; + } + } + ret_value.exponent = minus_k + float_info<T>::kappa + 1; + + // We may need to remove trailing zeros + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + + // Step 3: Find the significand with the smaller divisor + +small_divisor_case_label: + ret_value.significand *= 10; + ret_value.exponent = minus_k + float_info<T>::kappa; + + const uint32_t mask = (1u << float_info<T>::kappa) - 1; + auto dist = r - (deltai / 2) + (float_info<T>::small_divisor / 2); + + // Is dist divisible by 2^kappa? + if ((dist & mask) == 0) { + const bool approx_y_parity = + ((dist ^ (float_info<T>::small_divisor / 2)) & 1) != 0; + dist >>= float_info<T>::kappa; + + // Is dist divisible by 5^kappa? + if (check_divisibility_and_divide_by_pow5<float_info<T>::kappa>(dist)) { + ret_value.significand += dist; + + // Check z^(f) >= epsilon^(f) + // We have either yi == zi - epsiloni or yi == (zi - epsiloni) - 1, + // where yi == zi - epsiloni if and only if z^(f) >= epsilon^(f) + // Since there are only 2 possibilities, we only need to care about the + // parity. Also, zi and r should have the same parity since the divisor + // is an even number + if (cache_accessor<T>::compute_mul_parity(two_fc, cache, beta_minus_1) != + approx_y_parity) { + --ret_value.significand; + } else { + // If z^(f) >= epsilon^(f), we might have a tie + // when z^(f) == epsilon^(f), or equivalently, when y is an integer + if (is_center_integer<T>(two_fc, exponent, minus_k)) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } + } + } + // Is dist not divisible by 5^kappa? + else { + ret_value.significand += dist; + } + } + // Is dist not divisible by 2^kappa? + else { + // Since we know dist is small, we might be able to optimize the division + // better than the compiler; we are computing dist / small_divisor here + ret_value.significand += + small_division_by_pow10<float_info<T>::kappa>(dist); + } + return ret_value; +} +} // namespace dragonbox + +// Formats value using a variation of the Fixed-Precision Positive +// Floating-Point Printout ((FPP)^2) algorithm by Steele & White: +// https://fmt.dev/p372-steele.pdf. +template <typename Double> +void fallback_format(Double d, int num_digits, bool binary32, buffer<char>& buf, + int& exp10) { + bigint numerator; // 2 * R in (FPP)^2. + bigint denominator; // 2 * S in (FPP)^2. + // lower and upper are differences between value and corresponding boundaries. + bigint lower; // (M^- in (FPP)^2). + bigint upper_store; // upper's value if different from lower. + bigint* upper = nullptr; // (M^+ in (FPP)^2). + fp value; + // Shift numerator and denominator by an extra bit or two (if lower boundary + // is closer) to make lower and upper integers. This eliminates multiplication + // by 2 during later computations. + const bool is_predecessor_closer = + binary32 ? value.assign(static_cast<float>(d)) : value.assign(d); + int shift = is_predecessor_closer ? 2 : 1; + uint64_t significand = value.f << shift; + if (value.e >= 0) { + numerator.assign(significand); + numerator <<= value.e; + lower.assign(1); + lower <<= value.e; + if (shift != 1) { + upper_store.assign(1); + upper_store <<= value.e + 1; + upper = &upper_store; + } + denominator.assign_pow10(exp10); + denominator <<= shift; + } else if (exp10 < 0) { + numerator.assign_pow10(-exp10); + lower.assign(numerator); + if (shift != 1) { + upper_store.assign(numerator); + upper_store <<= 1; + upper = &upper_store; + } + numerator *= significand; + denominator.assign(1); + denominator <<= shift - value.e; + } else { + numerator.assign(significand); + denominator.assign_pow10(exp10); + denominator <<= shift - value.e; + lower.assign(1); + if (shift != 1) { + upper_store.assign(1ULL << 1); + upper = &upper_store; + } + } + // Invariant: value == (numerator / denominator) * pow(10, exp10). + if (num_digits < 0) { + // Generate the shortest representation. + if (!upper) upper = &lower; + bool even = (value.f & 1) == 0; + num_digits = 0; + char* data = buf.data(); + for (;;) { + int digit = numerator.divmod_assign(denominator); + bool low = compare(numerator, lower) - even < 0; // numerator <[=] lower. + // numerator + upper >[=] pow10: + bool high = add_compare(numerator, *upper, denominator) + even > 0; + data[num_digits++] = static_cast<char>('0' + digit); + if (low || high) { + if (!low) { + ++data[num_digits - 1]; + } else if (high) { + int result = add_compare(numerator, numerator, denominator); + // Round half to even. + if (result > 0 || (result == 0 && (digit % 2) != 0)) + ++data[num_digits - 1]; + } + buf.try_resize(to_unsigned(num_digits)); + exp10 -= num_digits - 1; + return; + } + numerator *= 10; + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + // Generate the given number of digits. + exp10 -= num_digits - 1; + if (num_digits == 0) { + buf.try_resize(1); + denominator *= 10; + buf[0] = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + return; + } + buf.try_resize(to_unsigned(num_digits)); + for (int i = 0; i < num_digits - 1; ++i) { + int digit = numerator.divmod_assign(denominator); + buf[i] = static_cast<char>('0' + digit); + numerator *= 10; + } + int digit = numerator.divmod_assign(denominator); + auto result = add_compare(numerator, numerator, denominator); + if (result > 0 || (result == 0 && (digit % 2) != 0)) { + if (digit == 9) { + const auto overflow = '0' + 10; + buf[num_digits - 1] = overflow; + // Propagate the carry. + for (int i = num_digits - 1; i > 0 && buf[i] == overflow; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] == overflow) { + buf[0] = '1'; + ++exp10; + } + return; + } + ++digit; + } + buf[num_digits - 1] = static_cast<char>('0' + digit); +} + +template <typename T> +int format_float(T value, int precision, float_specs specs, buffer<char>& buf) { + static_assert(!std::is_same<T, float>::value, ""); + FMT_ASSERT(value >= 0, "value is negative"); + + const bool fixed = specs.format == float_format::fixed; + if (value <= 0) { // <= instead of == to silence a warning. + if (precision <= 0 || !fixed) { + buf.push_back('0'); + return 0; + } + buf.try_resize(to_unsigned(precision)); + std::uninitialized_fill_n(buf.data(), precision, '0'); + return -precision; + } + + if (!specs.use_grisu) return snprintf_float(value, precision, specs, buf); + + if (precision < 0) { + // Use Dragonbox for the shortest format. + if (specs.binary32) { + auto dec = dragonbox::to_decimal(static_cast<float>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } + auto dec = dragonbox::to_decimal(static_cast<double>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } + + // Use Grisu + Dragon4 for the given precision: + // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf. + int exp = 0; + const int min_exp = -60; // alpha in Grisu. + int cached_exp10 = 0; // K in Grisu. + fp normalized = normalize(fp(value)); + const auto cached_pow = get_cached_power( + min_exp - (normalized.e + fp::significand_size), cached_exp10); + normalized = normalized * cached_pow; + // Limit precision to the maximum possible number of significant digits in an + // IEEE754 double because we don't need to generate zeros. + const int max_double_digits = 767; + if (precision > max_double_digits) precision = max_double_digits; + fixed_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; + if (grisu_gen_digits(normalized, 1, exp, handler) == digits::error) { + exp += handler.size - cached_exp10 - 1; + fallback_format(value, handler.precision, specs.binary32, buf, exp); + } else { + exp += handler.exp10; + buf.try_resize(to_unsigned(handler.size)); + } + if (!fixed && !specs.showpoint) { + // Remove trailing zeros. + auto num_digits = buf.size(); + while (num_digits > 0 && buf[num_digits - 1] == '0') { + --num_digits; + ++exp; + } + buf.try_resize(num_digits); + } + return exp; +} // namespace detail + +template <typename T> +int snprintf_float(T value, int precision, float_specs specs, + buffer<char>& buf) { + // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail. + FMT_ASSERT(buf.capacity() > buf.size(), "empty buffer"); + static_assert(!std::is_same<T, float>::value, ""); + + // Subtract 1 to account for the difference in precision since we use %e for + // both general and exponent format. + if (specs.format == float_format::general || + specs.format == float_format::exp) + precision = (precision >= 0 ? precision : 6) - 1; + + // Build the format string. + enum { max_format_size = 7 }; // The longest format is "%#.*Le". + char format[max_format_size]; + char* format_ptr = format; + *format_ptr++ = '%'; + if (specs.showpoint && specs.format == float_format::hex) *format_ptr++ = '#'; + if (precision >= 0) { + *format_ptr++ = '.'; + *format_ptr++ = '*'; + } + if (std::is_same<T, long double>()) *format_ptr++ = 'L'; + *format_ptr++ = specs.format != float_format::hex + ? (specs.format == float_format::fixed ? 'f' : 'e') + : (specs.upper ? 'A' : 'a'); + *format_ptr = '\0'; + + // Format using snprintf. + auto offset = buf.size(); + for (;;) { + auto begin = buf.data() + offset; + auto capacity = buf.capacity() - offset; +#ifdef FMT_FUZZ + if (precision > 100000) + throw std::runtime_error( + "fuzz mode - avoid large allocation inside snprintf"); +#endif + // Suppress the warning about a nonliteral format string. + // Cannot use auto because of a bug in MinGW (#1532). + int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF; + int result = precision >= 0 + ? snprintf_ptr(begin, capacity, format, precision, value) + : snprintf_ptr(begin, capacity, format, value); + if (result < 0) { + // The buffer will grow exponentially. + buf.try_reserve(buf.capacity() + 1); + continue; + } + auto size = to_unsigned(result); + // Size equal to capacity means that the last character was truncated. + if (size >= capacity) { + buf.try_reserve(size + offset + 1); // Add 1 for the terminating '\0'. + continue; + } + auto is_digit = [](char c) { return c >= '0' && c <= '9'; }; + if (specs.format == float_format::fixed) { + if (precision == 0) { + buf.try_resize(size); + return 0; + } + // Find and remove the decimal point. + auto end = begin + size, p = end; + do { + --p; + } while (is_digit(*p)); + int fraction_size = static_cast<int>(end - p - 1); + std::memmove(p, p + 1, to_unsigned(fraction_size)); + buf.try_resize(size - 1); + return -fraction_size; + } + if (specs.format == float_format::hex) { + buf.try_resize(size + offset); + return 0; + } + // Find and parse the exponent. + auto end = begin + size, exp_pos = end; + do { + --exp_pos; + } while (*exp_pos != 'e'); + char sign = exp_pos[1]; + assert(sign == '+' || sign == '-'); + int exp = 0; + auto p = exp_pos + 2; // Skip 'e' and sign. + do { + assert(is_digit(*p)); + exp = exp * 10 + (*p++ - '0'); + } while (p != end); + if (sign == '-') exp = -exp; + int fraction_size = 0; + if (exp_pos != begin + 1) { + // Remove trailing zeros. + auto fraction_end = exp_pos - 1; + while (*fraction_end == '0') --fraction_end; + // Move the fractional part left to get rid of the decimal point. + fraction_size = static_cast<int>(fraction_end - begin - 1); + std::memmove(begin + 1, begin + 2, to_unsigned(fraction_size)); + } + buf.try_resize(to_unsigned(fraction_size) + offset + 1); + return exp - fraction_size; + } +} + +// A public domain branchless UTF-8 decoder by Christopher Wellons: +// https://github.com/skeeto/branchless-utf8 +/* Decode the next character, c, from buf, reporting errors in e. + * + * Since this is a branchless decoder, four bytes will be read from the + * buffer regardless of the actual length of the next character. This + * means the buffer _must_ have at least three bytes of zero padding + * following the end of the data stream. + * + * Errors are reported in e, which will be non-zero if the parsed + * character was somehow invalid: invalid byte sequence, non-canonical + * encoding, or a surrogate half. + * + * The function returns a pointer to the next character. When an error + * occurs, this pointer will be a guess that depends on the particular + * error, but it will always advance at least one byte. + */ +inline const char* utf8_decode(const char* buf, uint32_t* c, int* e) { + static const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; + static const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; + static const int shiftc[] = {0, 18, 12, 6, 0}; + static const int shifte[] = {0, 6, 4, 2, 0}; + + int len = code_point_length(buf); + const char* next = buf + len; + + // Assume a four-byte character and load four bytes. Unused bits are + // shifted out. + auto s = reinterpret_cast<const unsigned char*>(buf); + *c = uint32_t(s[0] & masks[len]) << 18; + *c |= uint32_t(s[1] & 0x3f) << 12; + *c |= uint32_t(s[2] & 0x3f) << 6; + *c |= uint32_t(s[3] & 0x3f) << 0; + *c >>= shiftc[len]; + + // Accumulate the various error conditions. + *e = (*c < mins[len]) << 6; // non-canonical encoding + *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? + *e |= (*c > 0x10FFFF) << 8; // out of range? + *e |= (s[1] & 0xc0) >> 2; + *e |= (s[2] & 0xc0) >> 4; + *e |= (s[3]) >> 6; + *e ^= 0x2a; // top two bits of each tail byte correct? + *e >>= shifte[len]; + + return next; +} + +struct stringifier { + template <typename T> FMT_INLINE std::string operator()(T value) const { + return to_string(value); + } + std::string operator()(basic_format_arg<format_context>::handle h) const { + memory_buffer buf; + format_parse_context parse_ctx({}); + format_context format_ctx(buffer_appender<char>(buf), {}, {}); + h.format(parse_ctx, format_ctx); + return to_string(buf); + } +}; +} // namespace detail + +template <> struct formatter<detail::bigint> { + format_parse_context::iterator parse(format_parse_context& ctx) { + return ctx.begin(); + } + + format_context::iterator format(const detail::bigint& n, + format_context& ctx) { + auto out = ctx.out(); + bool first = true; + for (auto i = n.bigits_.size(); i > 0; --i) { + auto value = n.bigits_[i - 1u]; + if (first) { + out = format_to(out, "{:x}", value); + first = false; + continue; + } + out = format_to(out, "{:08x}", value); + } + if (n.exp_ > 0) + out = format_to(out, "p{}", n.exp_ * detail::bigint::bigit_bits); + return out; + } +}; + +FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { + auto transcode = [this](const char* p) { + auto cp = uint32_t(); + auto error = 0; + p = utf8_decode(p, &cp, &error); + if (error != 0) FMT_THROW(std::runtime_error("invalid utf8")); + if (cp <= 0xFFFF) { + buffer_.push_back(static_cast<wchar_t>(cp)); + } else { + cp -= 0x10000; + buffer_.push_back(static_cast<wchar_t>(0xD800 + (cp >> 10))); + buffer_.push_back(static_cast<wchar_t>(0xDC00 + (cp & 0x3FF))); + } + return p; + }; + auto p = s.data(); + const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. + if (s.size() >= block_size) { + for (auto end = p + s.size() - block_size + 1; p < end;) p = transcode(p); + } + if (auto num_chars_left = s.data() + s.size() - p) { + char buf[2 * block_size - 1] = {}; + memcpy(buf, p, to_unsigned(num_chars_left)); + p = buf; + do { + p = transcode(p); + } while (p - buf < num_chars_left); + } + buffer_.push_back(0); +} + +FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT { + FMT_TRY { + memory_buffer buf; + buf.resize(inline_buffer_size); + for (;;) { + char* system_message = &buf[0]; + int result = + detail::safe_strerror(error_code, system_message, buf.size()); + if (result == 0) { + format_to(detail::buffer_appender<char>(out), "{}: {}", message, + system_message); + return; + } + if (result != ERANGE) + break; // Can't get error message, report error code instead. + buf.resize(buf.size() * 2); + } + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +FMT_FUNC void detail::error_handler::on_error(const char* message) { + FMT_THROW(format_error(message)); +} + +FMT_FUNC void report_system_error(int error_code, + fmt::string_view message) FMT_NOEXCEPT { + report_error(format_system_error, error_code, message); +} + +FMT_FUNC std::string detail::vformat(string_view format_str, format_args args) { + if (format_str.size() == 2 && equal2(format_str.data(), "{}")) { + auto arg = args.get(0); + if (!arg) error_handler().on_error("argument not found"); + return visit_format_arg(stringifier(), arg); + } + memory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +#ifdef _WIN32 +namespace detail { +using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>; +extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( // + void*, const void*, dword, dword*, void*); +} // namespace detail +#endif + +FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, + basic_format_args<buffer_context<char>>(args)); +#ifdef _WIN32 + auto fd = _fileno(f); + if (_isatty(fd)) { + detail::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size())); + auto written = detail::dword(); + if (!detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)), + u16.c_str(), static_cast<uint32_t>(u16.size()), + &written, nullptr)) { + FMT_THROW(format_error("failed to write to console")); + } + return; + } +#endif + detail::fwrite_fully(buffer.data(), 1, buffer.size(), f); +} + +#ifdef _WIN32 +// Print assuming legacy (non-Unicode) encoding. +FMT_FUNC void detail::vprint_mojibake(std::FILE* f, string_view format_str, + format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, + basic_format_args<buffer_context<char>>(args)); + fwrite_fully(buffer.data(), 1, buffer.size(), f); +} +#endif + +FMT_FUNC void vprint(string_view format_str, format_args args) { + vprint(stdout, format_str, args); +} + +FMT_END_NAMESPACE + +#endif // FMT_FORMAT_INL_H_ diff --git a/src/3rdparty/fmt/format.h b/src/3rdparty/fmt/format.h new file mode 100644 index 000000000..1a037b02b --- /dev/null +++ b/src/3rdparty/fmt/format.h @@ -0,0 +1,3960 @@ +/* + Formatting library for C++ + + Copyright (c) 2012 - present, Victor Zverovich + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + --- Optional exception to the license --- + + As an exception, if, as a result of your compiling your source code, portions + of this Software are embedded into a machine-executable object form of such + source code, you may redistribute such embedded portions in such object form + without including the above copyright and permission notices. + */ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#include <algorithm> +#include <cerrno> +#include <cmath> +#include <cstdint> +#include <limits> +#include <memory> +#include <stdexcept> + +#include "core.h" + +#ifdef __INTEL_COMPILER +# define FMT_ICC_VERSION __INTEL_COMPILER +#elif defined(__ICL) +# define FMT_ICC_VERSION __ICL +#else +# define FMT_ICC_VERSION 0 +#endif + +#ifdef __NVCC__ +# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__) +#else +# define FMT_CUDA_VERSION 0 +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_NOINLINE __attribute__((noinline)) +#else +# define FMT_NOINLINE +#endif + +#if __cplusplus == 201103L || __cplusplus == 201402L +# if defined(__INTEL_COMPILER) || defined(__PGI) +# define FMT_FALLTHROUGH +# elif defined(__clang__) +# define FMT_FALLTHROUGH [[clang::fallthrough]] +# elif FMT_GCC_VERSION >= 700 && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) +# define FMT_FALLTHROUGH [[gnu::fallthrough]] +# else +# define FMT_FALLTHROUGH +# endif +#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \ + (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) +# define FMT_FALLTHROUGH [[fallthrough]] +#else +# define FMT_FALLTHROUGH +#endif + +#ifndef FMT_MAYBE_UNUSED +# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) +# define FMT_MAYBE_UNUSED [[maybe_unused]] +# else +# define FMT_MAYBE_UNUSED +# endif +#endif + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# if FMT_MSC_VER || FMT_NVCC +FMT_BEGIN_NAMESPACE +namespace detail { +template <typename Exception> inline void do_throw(const Exception& x) { + // Silence unreachable code warnings in MSVC and NVCC because these + // are nearly impossible to fix in a generic code. + volatile bool b = true; + if (b) throw x; +} +} // namespace detail +FMT_END_NAMESPACE +# define FMT_THROW(x) detail::do_throw(x) +# else +# define FMT_THROW(x) throw x +# endif +# else +# define FMT_THROW(x) \ + do { \ + static_cast<void>(sizeof(x)); \ + FMT_ASSERT(false, ""); \ + } while (false) +# endif +#endif + +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. +# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ + FMT_MSC_VER >= 1900) && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480) +# define FMT_USE_USER_DEFINED_LITERALS 1 +# else +# define FMT_USE_USER_DEFINED_LITERALS 0 +# endif +#endif + +#ifndef FMT_USE_UDL_TEMPLATE +// EDG frontend based compilers (icc, nvcc, PGI, etc) and GCC < 6.4 do not +// properly support UDL templates and GCC >= 9 warns about them. +# if FMT_USE_USER_DEFINED_LITERALS && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 501) && \ + ((FMT_GCC_VERSION >= 604 && __cplusplus >= 201402L) || \ + FMT_CLANG_VERSION >= 304) && \ + !defined(__PGI) && !defined(__NVCC__) +# define FMT_USE_UDL_TEMPLATE 1 +# else +# define FMT_USE_UDL_TEMPLATE 0 +# endif +#endif + +#ifndef FMT_USE_FLOAT +# define FMT_USE_FLOAT 1 +#endif + +#ifndef FMT_USE_DOUBLE +# define FMT_USE_DOUBLE 1 +#endif + +#ifndef FMT_USE_LONG_DOUBLE +# define FMT_USE_LONG_DOUBLE 1 +#endif + +// Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of +// int_writer template instances to just one by only using the largest integer +// type. This results in a reduction in binary size but will cause a decrease in +// integer formatting performance. +#if !defined(FMT_REDUCE_INT_INSTANTIATIONS) +# define FMT_REDUCE_INT_INSTANTIATIONS 0 +#endif + +// __builtin_clz is broken in clang with Microsoft CodeGen: +// https://github.com/fmtlib/fmt/issues/519 +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clz)) && !FMT_MSC_VER +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clzll)) && !FMT_MSC_VER +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctz)) +# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) +#endif +#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctzll)) +# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) +#endif + +#if FMT_MSC_VER +# include <intrin.h> // _BitScanReverse[64], _BitScanForward[64], _umul128 +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or otherwise support +// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the +// MSVC intrinsics if the clz and clzll builtins are not available. +#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && \ + !defined(FMT_BUILTIN_CTZLL) && !defined(_MANAGED) +FMT_BEGIN_NAMESPACE +namespace detail { +// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. +# ifndef __clang__ +# pragma intrinsic(_BitScanForward) +# pragma intrinsic(_BitScanReverse) +# endif +# if defined(_WIN64) && !defined(__clang__) +# pragma intrinsic(_BitScanForward64) +# pragma intrinsic(_BitScanReverse64) +# endif + +inline int clz(uint32_t x) { + unsigned long r = 0; + _BitScanReverse(&r, x); + FMT_ASSERT(x != 0, ""); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. + FMT_SUPPRESS_MSC_WARNING(6102) + return 31 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZ(n) detail::clz(n) + +inline int clzll(uint64_t x) { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 ^ (r + 32); + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast<uint32_t>(x)); +# endif + FMT_ASSERT(x != 0, ""); + FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. + return 63 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZLL(n) detail::clzll(n) + +inline int ctz(uint32_t x) { + unsigned long r = 0; + _BitScanForward(&r, x); + FMT_ASSERT(x != 0, ""); + FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZ(n) detail::ctz(n) + +inline int ctzll(uint64_t x) { + unsigned long r = 0; + FMT_ASSERT(x != 0, ""); + FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. +# ifdef _WIN64 + _BitScanForward64(&r, x); +# else + // Scan the low 32 bits. + if (_BitScanForward(&r, static_cast<uint32_t>(x))) return static_cast<int>(r); + // Scan the high 32 bits. + _BitScanForward(&r, static_cast<uint32_t>(x >> 32)); + r += 32; +# endif + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZLL(n) detail::ctzll(n) +} // namespace detail +FMT_END_NAMESPACE +#endif + +// Enable the deprecated numeric alignment. +#ifndef FMT_DEPRECATED_NUMERIC_ALIGN +# define FMT_DEPRECATED_NUMERIC_ALIGN 0 +#endif + +FMT_BEGIN_NAMESPACE +namespace detail { + +// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't have +// undefined behavior (e.g. due to type aliasing). +// Example: uint64_t d = bit_cast<uint64_t>(2.718); +template <typename Dest, typename Source> +inline Dest bit_cast(const Source& source) { + static_assert(sizeof(Dest) == sizeof(Source), "size mismatch"); + Dest dest; + std::memcpy(&dest, &source, sizeof(dest)); + return dest; +} + +inline bool is_big_endian() { + const auto u = 1u; + struct bytes { + char data[sizeof(u)]; + }; + return bit_cast<bytes>(u).data[0] == 0; +} + +// A fallback implementation of uintptr_t for systems that lack it. +struct fallback_uintptr { + unsigned char value[sizeof(void*)]; + + fallback_uintptr() = default; + explicit fallback_uintptr(const void* p) { + *this = bit_cast<fallback_uintptr>(p); + if (is_big_endian()) { + for (size_t i = 0, j = sizeof(void*) - 1; i < j; ++i, --j) + std::swap(value[i], value[j]); + } + } +}; +#ifdef UINTPTR_MAX +using uintptr_t = ::uintptr_t; +inline uintptr_t to_uintptr(const void* p) { return bit_cast<uintptr_t>(p); } +#else +using uintptr_t = fallback_uintptr; +inline fallback_uintptr to_uintptr(const void* p) { + return fallback_uintptr(p); +} +#endif + +// Returns the largest possible value for type T. Same as +// std::numeric_limits<T>::max() but shorter and not affected by the max macro. +template <typename T> constexpr T max_value() { + return (std::numeric_limits<T>::max)(); +} +template <typename T> constexpr int num_bits() { + return std::numeric_limits<T>::digits; +} +// std::numeric_limits<T>::digits may return 0 for 128-bit ints. +template <> constexpr int num_bits<int128_t>() { return 128; } +template <> constexpr int num_bits<uint128_t>() { return 128; } +template <> constexpr int num_bits<fallback_uintptr>() { + return static_cast<int>(sizeof(void*) * + std::numeric_limits<unsigned char>::digits); +} + +FMT_INLINE void assume(bool condition) { + (void)condition; +#if FMT_HAS_BUILTIN(__builtin_assume) + __builtin_assume(condition); +#endif +} + +// An approximation of iterator_t for pre-C++20 systems. +template <typename T> +using iterator_t = decltype(std::begin(std::declval<T&>())); +template <typename T> using sentinel_t = decltype(std::end(std::declval<T&>())); + +// A workaround for std::string not having mutable data() until C++17. +template <typename Char> inline Char* get_data(std::basic_string<Char>& s) { + return &s[0]; +} +template <typename Container> +inline typename Container::value_type* get_data(Container& c) { + return c.data(); +} + +#if defined(_SECURE_SCL) && _SECURE_SCL +// Make a checked iterator to avoid MSVC warnings. +template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>; +template <typename T> checked_ptr<T> make_checked(T* p, size_t size) { + return {p, size}; +} +#else +template <typename T> using checked_ptr = T*; +template <typename T> inline T* make_checked(T* p, size_t) { return p; } +#endif + +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +#if FMT_CLANG_VERSION +__attribute__((no_sanitize("undefined"))) +#endif +inline checked_ptr<typename Container::value_type> +reserve(std::back_insert_iterator<Container> it, size_t n) { + Container& c = get_container(it); + size_t size = c.size(); + c.resize(size + n); + return make_checked(get_data(c) + size, n); +} + +template <typename T> +inline buffer_appender<T> reserve(buffer_appender<T> it, size_t n) { + buffer<T>& buf = get_container(it); + buf.try_reserve(buf.size() + n); + return it; +} + +template <typename Iterator> inline Iterator& reserve(Iterator& it, size_t) { + return it; +} + +template <typename T, typename OutputIt> +constexpr T* to_pointer(OutputIt, size_t) { + return nullptr; +} +template <typename T> T* to_pointer(buffer_appender<T> it, size_t n) { + buffer<T>& buf = get_container(it); + auto size = buf.size(); + if (buf.capacity() < size + n) return nullptr; + buf.try_resize(size + n); + return buf.data() + size; +} + +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +inline std::back_insert_iterator<Container> base_iterator( + std::back_insert_iterator<Container>& it, + checked_ptr<typename Container::value_type>) { + return it; +} + +template <typename Iterator> +inline Iterator base_iterator(Iterator, Iterator it) { + return it; +} + +// An output iterator that counts the number of objects written to it and +// discards them. +class counting_iterator { + private: + size_t count_; + + public: + using iterator_category = std::output_iterator_tag; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + using _Unchecked_type = counting_iterator; // Mark iterator as checked. + + struct value_type { + template <typename T> void operator=(const T&) {} + }; + + counting_iterator() : count_(0) {} + + size_t count() const { return count_; } + + counting_iterator& operator++() { + ++count_; + return *this; + } + counting_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + friend counting_iterator operator+(counting_iterator it, difference_type n) { + it.count_ += static_cast<size_t>(n); + return it; + } + + value_type operator*() const { return {}; } +}; + +template <typename OutputIt> class truncating_iterator_base { + protected: + OutputIt out_; + size_t limit_; + size_t count_; + + truncating_iterator_base(OutputIt out, size_t limit) + : out_(out), limit_(limit), count_(0) {} + + public: + using iterator_category = std::output_iterator_tag; + using value_type = typename std::iterator_traits<OutputIt>::value_type; + using difference_type = void; + using pointer = void; + using reference = void; + using _Unchecked_type = + truncating_iterator_base; // Mark iterator as checked. + + OutputIt base() const { return out_; } + size_t count() const { return count_; } +}; + +// An output iterator that truncates the output and counts the number of objects +// written to it. +template <typename OutputIt, + typename Enable = typename std::is_void< + typename std::iterator_traits<OutputIt>::value_type>::type> +class truncating_iterator; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::false_type> + : public truncating_iterator_base<OutputIt> { + mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_; + + public: + using value_type = typename truncating_iterator_base<OutputIt>::value_type; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + truncating_iterator& operator++() { + if (this->count_++ < this->limit_) ++this->out_; + return *this; + } + + truncating_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + value_type& operator*() const { + return this->count_ < this->limit_ ? *this->out_ : blackhole_; + } +}; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::true_type> + : public truncating_iterator_base<OutputIt> { + public: + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + template <typename T> truncating_iterator& operator=(T val) { + if (this->count_++ < this->limit_) *this->out_++ = val; + return *this; + } + + truncating_iterator& operator++() { return *this; } + truncating_iterator& operator++(int) { return *this; } + truncating_iterator& operator*() { return *this; } +}; + +template <typename Char> +inline size_t count_code_points(basic_string_view<Char> s) { + return s.size(); +} + +// Counts the number of code points in a UTF-8 string. +inline size_t count_code_points(basic_string_view<char> s) { + const char* data = s.data(); + size_t num_code_points = 0; + for (size_t i = 0, size = s.size(); i != size; ++i) { + if ((data[i] & 0xc0) != 0x80) ++num_code_points; + } + return num_code_points; +} + +inline size_t count_code_points(basic_string_view<char8_type> s) { + return count_code_points(basic_string_view<char>( + reinterpret_cast<const char*>(s.data()), s.size())); +} + +template <typename Char> +inline size_t code_point_index(basic_string_view<Char> s, size_t n) { + size_t size = s.size(); + return n < size ? n : size; +} + +// Calculates the index of the nth code point in a UTF-8 string. +inline size_t code_point_index(basic_string_view<char8_type> s, size_t n) { + const char8_type* data = s.data(); + size_t num_code_points = 0; + for (size_t i = 0, size = s.size(); i != size; ++i) { + if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) { + return i; + } + } + return s.size(); +} + +template <typename InputIt, typename OutChar> +using needs_conversion = bool_constant< + std::is_same<typename std::iterator_traits<InputIt>::value_type, + char>::value && + std::is_same<OutChar, char8_type>::value>; + +template <typename OutChar, typename InputIt, typename OutputIt, + FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)> +OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { + return std::copy(begin, end, it); +} + +template <typename OutChar, typename InputIt, typename OutputIt, + FMT_ENABLE_IF(needs_conversion<InputIt, OutChar>::value)> +OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { + return std::transform(begin, end, it, + [](char c) { return static_cast<char8_type>(c); }); +} + +template <typename Char, typename InputIt> +inline counting_iterator copy_str(InputIt begin, InputIt end, + counting_iterator it) { + return it + (end - begin); +} + +template <typename T> +using is_fast_float = bool_constant<std::numeric_limits<T>::is_iec559 && + sizeof(T) <= sizeof(double)>; + +#ifndef FMT_USE_FULL_CACHE_DRAGONBOX +# define FMT_USE_FULL_CACHE_DRAGONBOX 0 +#endif + +template <typename T> +template <typename U> +void buffer<T>::append(const U* begin, const U* end) { + do { + auto count = to_unsigned(end - begin); + try_reserve(size_ + count); + auto free_cap = capacity_ - size_; + if (free_cap < count) count = free_cap; + std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count)); + size_ += count; + begin += count; + } while (begin != end); +} + +template <typename OutputIt, typename T, typename Traits> +void iterator_buffer<OutputIt, T, Traits>::flush() { + out_ = std::copy_n(data_, this->limit(this->size()), out_); + this->clear(); +} +} // namespace detail + +// The number of characters to store in the basic_memory_buffer object itself +// to avoid dynamic memory allocation. +enum { inline_buffer_size = 500 }; + +/** + \rst + A dynamically growing memory buffer for trivially copyable/constructible types + with the first ``SIZE`` elements stored in the object itself. + + You can use one of the following type aliases for common character types: + + +----------------+------------------------------+ + | Type | Definition | + +================+==============================+ + | memory_buffer | basic_memory_buffer<char> | + +----------------+------------------------------+ + | wmemory_buffer | basic_memory_buffer<wchar_t> | + +----------------+------------------------------+ + + **Example**:: + + fmt::memory_buffer out; + format_to(out, "The answer is {}.", 42); + + This will append the following output to the ``out`` object: + + .. code-block:: none + + The answer is 42. + + The output can be converted to an ``std::string`` with ``to_string(out)``. + \endrst + */ +template <typename T, size_t SIZE = inline_buffer_size, + typename Allocator = std::allocator<T>> +class basic_memory_buffer final : public detail::buffer<T> { + private: + T store_[SIZE]; + + // Don't inherit from Allocator avoid generating type_info for it. + Allocator alloc_; + + // Deallocate memory allocated by the buffer. + void deallocate() { + T* data = this->data(); + if (data != store_) alloc_.deallocate(data, this->capacity()); + } + + protected: + void grow(size_t size) final FMT_OVERRIDE; + + public: + using value_type = T; + using const_reference = const T&; + + explicit basic_memory_buffer(const Allocator& alloc = Allocator()) + : alloc_(alloc) { + this->set(store_, SIZE); + } + ~basic_memory_buffer() { deallocate(); } + + private: + // Move data from other to this buffer. + void move(basic_memory_buffer& other) { + alloc_ = std::move(other.alloc_); + T* data = other.data(); + size_t size = other.size(), capacity = other.capacity(); + if (data == other.store_) { + this->set(store_, capacity); + std::uninitialized_copy(other.store_, other.store_ + size, + detail::make_checked(store_, capacity)); + } else { + this->set(data, capacity); + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.set(other.store_, 0); + } + this->resize(size); + } + + public: + /** + \rst + Constructs a :class:`fmt::basic_memory_buffer` object moving the content + of the other object to it. + \endrst + */ + basic_memory_buffer(basic_memory_buffer&& other) FMT_NOEXCEPT { move(other); } + + /** + \rst + Moves the content of the other ``basic_memory_buffer`` object to this one. + \endrst + */ + basic_memory_buffer& operator=(basic_memory_buffer&& other) FMT_NOEXCEPT { + FMT_ASSERT(this != &other, ""); + deallocate(); + move(other); + return *this; + } + + // Returns a copy of the allocator associated with this buffer. + Allocator get_allocator() const { return alloc_; } + + /** + Resizes the buffer to contain *count* elements. If T is a POD type new + elements may not be initialized. + */ + void resize(size_t count) { this->try_resize(count); } + + /** Increases the buffer capacity to *new_capacity*. */ + void reserve(size_t new_capacity) { this->try_reserve(new_capacity); } + + // Directly append data into the buffer + using detail::buffer<T>::append; + template <typename ContiguousRange> + void append(const ContiguousRange& range) { + append(range.data(), range.data() + range.size()); + } +}; + +template <typename T, size_t SIZE, typename Allocator> +void basic_memory_buffer<T, SIZE, Allocator>::grow(size_t size) { +#ifdef FMT_FUZZ + if (size > 5000) throw std::runtime_error("fuzz mode - won't grow that much"); +#endif + size_t old_capacity = this->capacity(); + size_t new_capacity = old_capacity + old_capacity / 2; + if (size > new_capacity) new_capacity = size; + T* old_data = this->data(); + T* new_data = + std::allocator_traits<Allocator>::allocate(alloc_, new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + std::uninitialized_copy(old_data, old_data + this->size(), + detail::make_checked(new_data, new_capacity)); + this->set(new_data, new_capacity); + // deallocate must not throw according to the standard, but even if it does, + // the buffer already uses the new storage and will deallocate it in + // destructor. + if (old_data != store_) alloc_.deallocate(old_data, old_capacity); +} + +using memory_buffer = basic_memory_buffer<char>; +using wmemory_buffer = basic_memory_buffer<wchar_t>; + +template <typename T, size_t SIZE, typename Allocator> +struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type { +}; + +/** A formatting error such as invalid format string. */ +FMT_CLASS_API +class FMT_API format_error : public std::runtime_error { + public: + explicit format_error(const char* message) : std::runtime_error(message) {} + explicit format_error(const std::string& message) + : std::runtime_error(message) {} + format_error(const format_error&) = default; + format_error& operator=(const format_error&) = default; + format_error(format_error&&) = default; + format_error& operator=(format_error&&) = default; + ~format_error() FMT_NOEXCEPT FMT_OVERRIDE; +}; + +namespace detail { + +template <typename T> +using is_signed = + std::integral_constant<bool, std::numeric_limits<T>::is_signed || + std::is_same<T, int128_t>::value>; + +// Returns true if value is negative, false otherwise. +// Same as `value < 0` but doesn't produce warnings if T is an unsigned type. +template <typename T, FMT_ENABLE_IF(is_signed<T>::value)> +FMT_CONSTEXPR bool is_negative(T value) { + return value < 0; +} +template <typename T, FMT_ENABLE_IF(!is_signed<T>::value)> +FMT_CONSTEXPR bool is_negative(T) { + return false; +} + +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +FMT_CONSTEXPR bool is_supported_floating_point(T) { + return (std::is_same<T, float>::value && FMT_USE_FLOAT) || + (std::is_same<T, double>::value && FMT_USE_DOUBLE) || + (std::is_same<T, long double>::value && FMT_USE_LONG_DOUBLE); +} + +// Smallest of uint32_t, uint64_t, uint128_t that is large enough to +// represent all values of an integral type T. +template <typename T> +using uint32_or_64_or_128_t = + conditional_t<num_bits<T>() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS, + uint32_t, + conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>; + +// 128-bit integer type used internally +struct FMT_EXTERN_TEMPLATE_API uint128_wrapper { + uint128_wrapper() = default; + +#if FMT_USE_INT128 + uint128_t internal_; + + uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT + : internal_{static_cast<uint128_t>(low) | + (static_cast<uint128_t>(high) << 64)} {} + + uint128_wrapper(uint128_t u) : internal_{u} {} + + uint64_t high() const FMT_NOEXCEPT { return uint64_t(internal_ >> 64); } + uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { + internal_ += n; + return *this; + } +#else + uint64_t high_; + uint64_t low_; + + uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT : high_{high}, + low_{low} {} + + uint64_t high() const FMT_NOEXCEPT { return high_; } + uint64_t low() const FMT_NOEXCEPT { return low_; } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { +# if defined(_MSC_VER) && defined(_M_X64) + unsigned char carry = _addcarry_u64(0, low_, n, &low_); + _addcarry_u64(carry, high_, 0, &high_); + return *this; +# else + uint64_t sum = low_ + n; + high_ += (sum < low_ ? 1 : 0); + low_ = sum; + return *this; +# endif + } +#endif +}; + +// Table entry type for divisibility test used internally +template <typename T> struct FMT_EXTERN_TEMPLATE_API divtest_table_entry { + T mod_inv; + T max_quotient; +}; + +// Static data is placed in this class template for the header-only config. +template <typename T = void> struct FMT_EXTERN_TEMPLATE_API basic_data { + static const uint64_t powers_of_10_64[]; + static const uint32_t zero_or_powers_of_10_32_new[]; + static const uint64_t zero_or_powers_of_10_64_new[]; + static const uint64_t grisu_pow10_significands[]; + static const int16_t grisu_pow10_exponents[]; + static const divtest_table_entry<uint32_t> divtest_table_for_pow5_32[]; + static const divtest_table_entry<uint64_t> divtest_table_for_pow5_64[]; + static const uint64_t dragonbox_pow10_significands_64[]; + static const uint128_wrapper dragonbox_pow10_significands_128[]; + // log10(2) = 0x0.4d104d427de7fbcc... + static const uint64_t log10_2_significand = 0x4d104d427de7fbcc; +#if !FMT_USE_FULL_CACHE_DRAGONBOX + static const uint64_t powers_of_5_64[]; + static const uint32_t dragonbox_pow10_recovery_errors[]; +#endif + // GCC generates slightly better code for pairs than chars. + using digit_pair = char[2]; + static const digit_pair digits[]; + static const char hex_digits[]; + static const char foreground_color[]; + static const char background_color[]; + static const char reset_color[5]; + static const wchar_t wreset_color[5]; + static const char signs[]; + static const char left_padding_shifts[5]; + static const char right_padding_shifts[5]; + + // DEPRECATED! These are for ABI compatibility. + static const uint32_t zero_or_powers_of_10_32[]; + static const uint64_t zero_or_powers_of_10_64[]; +}; + +// Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). +// This is a function instead of an array to workaround a bug in GCC10 (#1810). +FMT_INLINE uint16_t bsr2log10(int bsr) { + static constexpr uint16_t data[] = { + 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, + 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, + 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; + return data[bsr]; +} + +#ifndef FMT_EXPORTED +FMT_EXTERN template struct basic_data<void>; +#endif + +// This is a struct rather than an alias to avoid shadowing warnings in gcc. +struct data : basic_data<> {}; + +#ifdef FMT_BUILTIN_CLZLL +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +inline int count_digits(uint64_t n) { + // https://github.com/fmtlib/format-benchmark/blob/master/digits10 + auto t = bsr2log10(FMT_BUILTIN_CLZLL(n | 1) ^ 63); + return t - (n < data::zero_or_powers_of_10_64_new[t]); +} +#else +// Fallback version of count_digits used when __builtin_clz is not available. +inline int count_digits(uint64_t n) { + int count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#endif + +#if FMT_USE_INT128 +inline int count_digits(uint128_t n) { + int count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000U; + count += 4; + } +} +#endif + +// Counts the number of digits in n. BITS = log2(radix). +template <unsigned BITS, typename UInt> inline int count_digits(UInt n) { + int num_digits = 0; + do { + ++num_digits; + } while ((n >>= BITS) != 0); + return num_digits; +} + +template <> int count_digits<4>(detail::fallback_uintptr n); + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_ALWAYS_INLINE inline __attribute__((always_inline)) +#elif FMT_MSC_VER +# define FMT_ALWAYS_INLINE __forceinline +#else +# define FMT_ALWAYS_INLINE inline +#endif + +// To suppress unnecessary security cookie checks +#if FMT_MSC_VER && !FMT_CLANG_VERSION +# define FMT_SAFEBUFFERS __declspec(safebuffers) +#else +# define FMT_SAFEBUFFERS +#endif + +#ifdef FMT_BUILTIN_CLZ +// Optional version of count_digits for better performance on 32-bit platforms. +inline int count_digits(uint32_t n) { + auto t = bsr2log10(FMT_BUILTIN_CLZ(n | 1) ^ 31); + return t - (n < data::zero_or_powers_of_10_32_new[t]); +} +#endif + +template <typename Int> constexpr int digits10() FMT_NOEXCEPT { + return std::numeric_limits<Int>::digits10; +} +template <> constexpr int digits10<int128_t>() FMT_NOEXCEPT { return 38; } +template <> constexpr int digits10<uint128_t>() FMT_NOEXCEPT { return 38; } + +template <typename Char> FMT_API std::string grouping_impl(locale_ref loc); +template <typename Char> inline std::string grouping(locale_ref loc) { + return grouping_impl<char>(loc); +} +template <> inline std::string grouping<wchar_t>(locale_ref loc) { + return grouping_impl<wchar_t>(loc); +} + +template <typename Char> FMT_API Char thousands_sep_impl(locale_ref loc); +template <typename Char> inline Char thousands_sep(locale_ref loc) { + return Char(thousands_sep_impl<char>(loc)); +} +template <> inline wchar_t thousands_sep(locale_ref loc) { + return thousands_sep_impl<wchar_t>(loc); +} + +template <typename Char> FMT_API Char decimal_point_impl(locale_ref loc); +template <typename Char> inline Char decimal_point(locale_ref loc) { + return Char(decimal_point_impl<char>(loc)); +} +template <> inline wchar_t decimal_point(locale_ref loc) { + return decimal_point_impl<wchar_t>(loc); +} + +// Compares two characters for equality. +template <typename Char> bool equal2(const Char* lhs, const char* rhs) { + return lhs[0] == rhs[0] && lhs[1] == rhs[1]; +} +inline bool equal2(const char* lhs, const char* rhs) { + return memcmp(lhs, rhs, 2) == 0; +} + +// Copies two characters from src to dst. +template <typename Char> void copy2(Char* dst, const char* src) { + *dst++ = static_cast<Char>(*src++); + *dst = static_cast<Char>(*src); +} +FMT_INLINE void copy2(char* dst, const char* src) { memcpy(dst, src, 2); } + +template <typename Iterator> struct format_decimal_result { + Iterator begin; + Iterator end; +}; + +// Formats a decimal unsigned integer value writing into out pointing to a +// buffer of specified size. The caller must ensure that the buffer is large +// enough. +template <typename Char, typename UInt> +inline format_decimal_result<Char*> format_decimal(Char* out, UInt value, + int size) { + FMT_ASSERT(size >= count_digits(value), "invalid digit count"); + out += size; + Char* end = out; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + out -= 2; + copy2(out, data::digits[value % 100]); + value /= 100; + } + if (value < 10) { + *--out = static_cast<Char>('0' + value); + return {out, end}; + } + out -= 2; + copy2(out, data::digits[value]); + return {out, end}; +} + +template <typename Char, typename UInt, typename Iterator, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<Iterator>>::value)> +inline format_decimal_result<Iterator> format_decimal(Iterator out, UInt value, + int size) { + // Buffer is large enough to hold all digits (digits10 + 1). + Char buffer[digits10<UInt>() + 1]; + auto end = format_decimal(buffer, value, size).end; + return {out, detail::copy_str<Char>(buffer, end, out)}; +} + +template <unsigned BASE_BITS, typename Char, typename UInt> +inline Char* format_uint(Char* buffer, UInt value, int num_digits, + bool upper = false) { + buffer += num_digits; + Char* end = buffer; + do { + const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits; + unsigned digit = (value & ((1 << BASE_BITS) - 1)); + *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit) + : digits[digit]); + } while ((value >>= BASE_BITS) != 0); + return end; +} + +template <unsigned BASE_BITS, typename Char> +Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, + bool = false) { + auto char_digits = std::numeric_limits<unsigned char>::digits / 4; + int start = (num_digits + char_digits - 1) / char_digits - 1; + if (int start_digits = num_digits % char_digits) { + unsigned value = n.value[start--]; + buffer = format_uint<BASE_BITS>(buffer, value, start_digits); + } + for (; start >= 0; --start) { + unsigned value = n.value[start]; + buffer += char_digits; + auto p = buffer; + for (int i = 0; i < char_digits; ++i) { + unsigned digit = (value & ((1 << BASE_BITS) - 1)); + *--p = static_cast<Char>(data::hex_digits[digit]); + value >>= BASE_BITS; + } + } + return buffer; +} + +template <unsigned BASE_BITS, typename Char, typename It, typename UInt> +inline It format_uint(It out, UInt value, int num_digits, bool upper = false) { + if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) { + format_uint<BASE_BITS>(ptr, value, num_digits, upper); + return out; + } + // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). + char buffer[num_bits<UInt>() / BASE_BITS + 1]; + format_uint<BASE_BITS>(buffer, value, num_digits, upper); + return detail::copy_str<Char>(buffer, buffer + num_digits, out); +} + +// A converter from UTF-8 to UTF-16. +class utf8_to_utf16 { + private: + wmemory_buffer buffer_; + + public: + FMT_API explicit utf8_to_utf16(string_view s); + operator wstring_view() const { return {&buffer_[0], size()}; } + size_t size() const { return buffer_.size() - 1; } + const wchar_t* c_str() const { return &buffer_[0]; } + std::wstring str() const { return {&buffer_[0], size()}; } +}; + +template <typename T = void> struct null {}; + +// Workaround an array initialization issue in gcc 4.8. +template <typename Char> struct fill_t { + private: + enum { max_size = 4 }; + Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)}; + unsigned char size_ = 1; + + public: + FMT_CONSTEXPR void operator=(basic_string_view<Char> s) { + auto size = s.size(); + if (size > max_size) { + FMT_THROW(format_error("invalid fill")); + return; + } + for (size_t i = 0; i < size; ++i) data_[i] = s[i]; + size_ = static_cast<unsigned char>(size); + } + + size_t size() const { return size_; } + const Char* data() const { return data_; } + + FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; } + FMT_CONSTEXPR const Char& operator[](size_t index) const { + return data_[index]; + } +}; +} // namespace detail + +// We cannot use enum classes as bit fields because of a gcc bug +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414. +namespace align { +enum type { none, left, right, center, numeric }; +} +using align_t = align::type; + +namespace sign { +enum type { none, minus, plus, space }; +} +using sign_t = sign::type; + +// Format specifiers for built-in and string types. +template <typename Char> struct basic_format_specs { + int width; + int precision; + char type; + align_t align : 4; + sign_t sign : 3; + bool alt : 1; // Alternate form ('#'). + detail::fill_t<Char> fill; + + constexpr basic_format_specs() + : width(0), + precision(-1), + type(0), + align(align::none), + sign(sign::none), + alt(false) {} +}; + +using format_specs = basic_format_specs<char>; + +namespace detail { +namespace dragonbox { + +// Type-specific information that Dragonbox uses. +template <class T> struct float_info; + +template <> struct float_info<float> { + using carrier_uint = uint32_t; + static const int significand_bits = 23; + static const int exponent_bits = 8; + static const int min_exponent = -126; + static const int max_exponent = 127; + static const int exponent_bias = -127; + static const int decimal_digits = 9; + static const int kappa = 1; + static const int big_divisor = 100; + static const int small_divisor = 10; + static const int min_k = -31; + static const int max_k = 46; + static const int cache_bits = 64; + static const int divisibility_check_by_5_threshold = 39; + static const int case_fc_pm_half_lower_threshold = -1; + static const int case_fc_pm_half_upper_threshold = 6; + static const int case_fc_lower_threshold = -2; + static const int case_fc_upper_threshold = 6; + static const int case_shorter_interval_left_endpoint_lower_threshold = 2; + static const int case_shorter_interval_left_endpoint_upper_threshold = 3; + static const int shorter_interval_tie_lower_threshold = -35; + static const int shorter_interval_tie_upper_threshold = -35; + static const int max_trailing_zeros = 7; +}; + +template <> struct float_info<double> { + using carrier_uint = uint64_t; + static const int significand_bits = 52; + static const int exponent_bits = 11; + static const int min_exponent = -1022; + static const int max_exponent = 1023; + static const int exponent_bias = -1023; + static const int decimal_digits = 17; + static const int kappa = 2; + static const int big_divisor = 1000; + static const int small_divisor = 100; + static const int min_k = -292; + static const int max_k = 326; + static const int cache_bits = 128; + static const int divisibility_check_by_5_threshold = 86; + static const int case_fc_pm_half_lower_threshold = -2; + static const int case_fc_pm_half_upper_threshold = 9; + static const int case_fc_lower_threshold = -4; + static const int case_fc_upper_threshold = 9; + static const int case_shorter_interval_left_endpoint_lower_threshold = 2; + static const int case_shorter_interval_left_endpoint_upper_threshold = 3; + static const int shorter_interval_tie_lower_threshold = -77; + static const int shorter_interval_tie_upper_threshold = -77; + static const int max_trailing_zeros = 16; +}; + +template <typename T> struct decimal_fp { + using significand_type = typename float_info<T>::carrier_uint; + significand_type significand; + int exponent; +}; + +template <typename T> FMT_API decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT; +} // namespace dragonbox + +template <typename T> +constexpr typename dragonbox::float_info<T>::carrier_uint exponent_mask() { + using uint = typename dragonbox::float_info<T>::carrier_uint; + return ((uint(1) << dragonbox::float_info<T>::exponent_bits) - 1) + << dragonbox::float_info<T>::significand_bits; +} + +// A floating-point presentation format. +enum class float_format : unsigned char { + general, // General: exponent notation or fixed point based on magnitude. + exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. + fixed, // Fixed point with the default precision of 6, e.g. 0.0012. + hex +}; + +struct float_specs { + int precision; + float_format format : 8; + sign_t sign : 8; + bool upper : 1; + bool locale : 1; + bool binary32 : 1; + bool use_grisu : 1; + bool showpoint : 1; +}; + +// Writes the exponent exp in the form "[+-]d{2,3}" to buffer. +template <typename Char, typename It> It write_exponent(int exp, It it) { + FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range"); + if (exp < 0) { + *it++ = static_cast<Char>('-'); + exp = -exp; + } else { + *it++ = static_cast<Char>('+'); + } + if (exp >= 100) { + const char* top = data::digits[exp / 100]; + if (exp >= 1000) *it++ = static_cast<Char>(top[0]); + *it++ = static_cast<Char>(top[1]); + exp %= 100; + } + const char* d = data::digits[exp]; + *it++ = static_cast<Char>(d[0]); + *it++ = static_cast<Char>(d[1]); + return it; +} + +template <typename T> +int format_float(T value, int precision, float_specs specs, buffer<char>& buf); + +// Formats a floating-point number with snprintf. +template <typename T> +int snprintf_float(T value, int precision, float_specs specs, + buffer<char>& buf); + +template <typename T> T promote_float(T value) { return value; } +inline double promote_float(float value) { return static_cast<double>(value); } + +template <typename Handler> +FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) { + switch (spec) { + case 0: + case 'd': + handler.on_dec(); + break; + case 'x': + case 'X': + handler.on_hex(); + break; + case 'b': + case 'B': + handler.on_bin(); + break; + case 'o': + handler.on_oct(); + break; +#ifdef FMT_DEPRECATED_N_SPECIFIER + case 'n': +#endif + case 'L': + handler.on_num(); + break; + case 'c': + handler.on_chr(); + break; + default: + handler.on_error(); + } +} + +template <typename ErrorHandler = error_handler, typename Char> +FMT_CONSTEXPR float_specs parse_float_type_spec( + const basic_format_specs<Char>& specs, ErrorHandler&& eh = {}) { + auto result = float_specs(); + result.showpoint = specs.alt; + switch (specs.type) { + case 0: + result.format = float_format::general; + result.showpoint |= specs.precision > 0; + break; + case 'G': + result.upper = true; + FMT_FALLTHROUGH; + case 'g': + result.format = float_format::general; + break; + case 'E': + result.upper = true; + FMT_FALLTHROUGH; + case 'e': + result.format = float_format::exp; + result.showpoint |= specs.precision != 0; + break; + case 'F': + result.upper = true; + FMT_FALLTHROUGH; + case 'f': + result.format = float_format::fixed; + result.showpoint |= specs.precision != 0; + break; + case 'A': + result.upper = true; + FMT_FALLTHROUGH; + case 'a': + result.format = float_format::hex; + break; +#ifdef FMT_DEPRECATED_N_SPECIFIER + case 'n': +#endif + case 'L': + result.locale = true; + break; + default: + eh.on_error("invalid type specifier"); + break; + } + return result; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_char_specs(const basic_format_specs<Char>* specs, + Handler&& handler) { + if (!specs) return handler.on_char(); + if (specs->type && specs->type != 'c') return handler.on_int(); + if (specs->align == align::numeric || specs->sign != sign::none || specs->alt) + handler.on_error("invalid format specifier for char"); + handler.on_char(); +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) { + if (spec == 0 || spec == 's') + handler.on_string(); + else if (spec == 'p') + handler.on_pointer(); + else + handler.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) { + if (spec != 0 && spec != 's') eh.on_error("invalid type specifier"); +} + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) { + if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier"); +} + +template <typename ErrorHandler> class int_type_checker : private ErrorHandler { + public: + FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_dec() {} + FMT_CONSTEXPR void on_hex() {} + FMT_CONSTEXPR void on_bin() {} + FMT_CONSTEXPR void on_oct() {} + FMT_CONSTEXPR void on_num() {} + FMT_CONSTEXPR void on_chr() {} + + FMT_CONSTEXPR void on_error() { + ErrorHandler::on_error("invalid type specifier"); + } +}; + +template <typename ErrorHandler> +class char_specs_checker : public ErrorHandler { + private: + char type_; + + public: + FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh) + : ErrorHandler(eh), type_(type) {} + + FMT_CONSTEXPR void on_int() { + handle_int_type_spec(type_, int_type_checker<ErrorHandler>(*this)); + } + FMT_CONSTEXPR void on_char() {} +}; + +template <typename ErrorHandler> +class cstring_type_checker : public ErrorHandler { + public: + FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh) + : ErrorHandler(eh) {} + + FMT_CONSTEXPR void on_string() {} + FMT_CONSTEXPR void on_pointer() {} +}; + +template <typename OutputIt, typename Char> +FMT_NOINLINE OutputIt fill(OutputIt it, size_t n, const fill_t<Char>& fill) { + auto fill_size = fill.size(); + if (fill_size == 1) return std::fill_n(it, n, fill[0]); + for (size_t i = 0; i < n; ++i) it = std::copy_n(fill.data(), fill_size, it); + return it; +} + +// Writes the output of f, padded according to format specifications in specs. +// size: output size in code units. +// width: output display width in (terminal) column positions. +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +inline OutputIt write_padded(OutputIt out, + const basic_format_specs<Char>& specs, size_t size, + size_t width, F&& f) { + static_assert(align == align::left || align == align::right, ""); + unsigned spec_width = to_unsigned(specs.width); + size_t padding = spec_width > width ? spec_width - width : 0; + auto* shifts = align == align::left ? data::left_padding_shifts + : data::right_padding_shifts; + size_t left_padding = padding >> shifts[specs.align]; + auto it = reserve(out, size + padding * specs.fill.size()); + it = fill(it, left_padding, specs.fill); + it = f(it); + it = fill(it, padding - left_padding, specs.fill); + return base_iterator(out, it); +} + +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +inline OutputIt write_padded(OutputIt out, + const basic_format_specs<Char>& specs, size_t size, + F&& f) { + return write_padded<align>(out, specs, size, size, f); +} + +template <typename Char, typename OutputIt> +OutputIt write_bytes(OutputIt out, string_view bytes, + const basic_format_specs<Char>& specs) { + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + return write_padded(out, specs, bytes.size(), [bytes](iterator it) { + const char* data = bytes.data(); + return copy_str<Char>(data, data + bytes.size(), it); + }); +} + +// Data for write_int that doesn't depend on output iterator type. It is used to +// avoid template code bloat. +template <typename Char> struct write_int_data { + size_t size; + size_t padding; + + write_int_data(int num_digits, string_view prefix, + const basic_format_specs<Char>& specs) + : size(prefix.size() + to_unsigned(num_digits)), padding(0) { + if (specs.align == align::numeric) { + auto width = to_unsigned(specs.width); + if (width > size) { + padding = width - size; + size = width; + } + } else if (specs.precision > num_digits) { + size = prefix.size() + to_unsigned(specs.precision); + padding = to_unsigned(specs.precision - num_digits); + } + } +}; + +// Writes an integer in the format +// <left-padding><prefix><numeric-padding><digits><right-padding> +// where <digits> are written by f(it). +template <typename OutputIt, typename Char, typename F> +OutputIt write_int(OutputIt out, int num_digits, string_view prefix, + const basic_format_specs<Char>& specs, F f) { + auto data = write_int_data<Char>(num_digits, prefix, specs); + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + return write_padded<align::right>(out, specs, data.size, [=](iterator it) { + if (prefix.size() != 0) + it = copy_str<Char>(prefix.begin(), prefix.end(), it); + it = std::fill_n(it, data.padding, static_cast<Char>('0')); + return f(it); + }); +} + +template <typename StrChar, typename Char, typename OutputIt> +OutputIt write(OutputIt out, basic_string_view<StrChar> s, + const basic_format_specs<Char>& specs) { + auto data = s.data(); + auto size = s.size(); + if (specs.precision >= 0 && to_unsigned(specs.precision) < size) + size = code_point_index(s, to_unsigned(specs.precision)); + auto width = specs.width != 0 + ? count_code_points(basic_string_view<StrChar>(data, size)) + : 0; + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + return write_padded(out, specs, size, width, [=](iterator it) { + return copy_str<Char>(data, data + size, it); + }); +} + +// The handle_int_type_spec handler that writes an integer. +template <typename OutputIt, typename Char, typename UInt> struct int_writer { + OutputIt out; + locale_ref locale; + const basic_format_specs<Char>& specs; + UInt abs_value; + char prefix[4]; + unsigned prefix_size; + + using iterator = + remove_reference_t<decltype(reserve(std::declval<OutputIt&>(), 0))>; + + string_view get_prefix() const { return string_view(prefix, prefix_size); } + + template <typename Int> + int_writer(OutputIt output, locale_ref loc, Int value, + const basic_format_specs<Char>& s) + : out(output), + locale(loc), + specs(s), + abs_value(static_cast<UInt>(value)), + prefix_size(0) { + static_assert(std::is_same<uint32_or_64_or_128_t<Int>, UInt>::value, ""); + if (is_negative(value)) { + prefix[0] = '-'; + ++prefix_size; + abs_value = 0 - abs_value; + } else if (specs.sign != sign::none && specs.sign != sign::minus) { + prefix[0] = specs.sign == sign::plus ? '+' : ' '; + ++prefix_size; + } + } + + void on_dec() { + auto num_digits = count_digits(abs_value); + out = write_int( + out, num_digits, get_prefix(), specs, [this, num_digits](iterator it) { + return format_decimal<Char>(it, abs_value, num_digits).end; + }); + } + + void on_hex() { + if (specs.alt) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = specs.type; + } + int num_digits = count_digits<4>(abs_value); + out = write_int(out, num_digits, get_prefix(), specs, + [this, num_digits](iterator it) { + return format_uint<4, Char>(it, abs_value, num_digits, + specs.type != 'x'); + }); + } + + void on_bin() { + if (specs.alt) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = static_cast<char>(specs.type); + } + int num_digits = count_digits<1>(abs_value); + out = write_int(out, num_digits, get_prefix(), specs, + [this, num_digits](iterator it) { + return format_uint<1, Char>(it, abs_value, num_digits); + }); + } + + void on_oct() { + int num_digits = count_digits<3>(abs_value); + if (specs.alt && specs.precision <= num_digits && abs_value != 0) { + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + prefix[prefix_size++] = '0'; + } + out = write_int(out, num_digits, get_prefix(), specs, + [this, num_digits](iterator it) { + return format_uint<3, Char>(it, abs_value, num_digits); + }); + } + + enum { sep_size = 1 }; + + void on_num() { + std::string groups = grouping<Char>(locale); + if (groups.empty()) return on_dec(); + auto sep = thousands_sep<Char>(locale); + if (!sep) return on_dec(); + int num_digits = count_digits(abs_value); + int size = num_digits, n = num_digits; + std::string::const_iterator group = groups.cbegin(); + while (group != groups.cend() && n > *group && *group > 0 && + *group != max_value<char>()) { + size += sep_size; + n -= *group; + ++group; + } + if (group == groups.cend()) size += sep_size * ((n - 1) / groups.back()); + char digits[40]; + format_decimal(digits, abs_value, num_digits); + basic_memory_buffer<Char> buffer; + size += static_cast<int>(prefix_size); + const auto usize = to_unsigned(size); + buffer.resize(usize); + basic_string_view<Char> s(&sep, sep_size); + // Index of a decimal digit with the least significant digit having index 0. + int digit_index = 0; + group = groups.cbegin(); + auto p = buffer.data() + size - 1; + for (int i = num_digits - 1; i > 0; --i) { + *p-- = static_cast<Char>(digits[i]); + if (*group <= 0 || ++digit_index % *group != 0 || + *group == max_value<char>()) + continue; + if (group + 1 != groups.cend()) { + digit_index = 0; + ++group; + } + std::uninitialized_copy(s.data(), s.data() + s.size(), + make_checked(p, s.size())); + p -= s.size(); + } + *p-- = static_cast<Char>(*digits); + if (prefix_size != 0) *p = static_cast<Char>('-'); + auto data = buffer.data(); + out = write_padded<align::right>( + out, specs, usize, usize, + [=](iterator it) { return copy_str<Char>(data, data + size, it); }); + } + + void on_chr() { *out++ = static_cast<Char>(abs_value); } + + FMT_NORETURN void on_error() { + FMT_THROW(format_error("invalid type specifier")); + } +}; + +template <typename Char, typename OutputIt> +OutputIt write_nonfinite(OutputIt out, bool isinf, + const basic_format_specs<Char>& specs, + const float_specs& fspecs) { + auto str = + isinf ? (fspecs.upper ? "INF" : "inf") : (fspecs.upper ? "NAN" : "nan"); + constexpr size_t str_size = 3; + auto sign = fspecs.sign; + auto size = str_size + (sign ? 1 : 0); + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + return write_padded(out, specs, size, [=](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + return copy_str<Char>(str, str + str_size, it); + }); +} + +// A decimal floating-point number significand * pow(10, exp). +struct big_decimal_fp { + const char* significand; + int significand_size; + int exponent; +}; + +inline int get_significand_size(const big_decimal_fp& fp) { + return fp.significand_size; +} +template <typename T> +inline int get_significand_size(const dragonbox::decimal_fp<T>& fp) { + return count_digits(fp.significand); +} + +template <typename Char, typename OutputIt> +inline OutputIt write_significand(OutputIt out, const char* significand, + int& significand_size) { + return copy_str<Char>(significand, significand + significand_size, out); +} +template <typename Char, typename OutputIt, typename UInt> +inline OutputIt write_significand(OutputIt out, UInt significand, + int significand_size) { + return format_decimal<Char>(out, significand, significand_size).end; +} + +template <typename Char, typename UInt, + FMT_ENABLE_IF(std::is_integral<UInt>::value)> +inline Char* write_significand(Char* out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) { + if (!decimal_point) + return format_decimal(out, significand, significand_size).end; + auto end = format_decimal(out + 1, significand, significand_size).end; + if (integral_size == 1) + out[0] = out[1]; + else + std::copy_n(out + 1, integral_size, out); + out[integral_size] = decimal_point; + return end; +} + +template <typename OutputIt, typename UInt, typename Char, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<OutputIt>>::value)> +inline OutputIt write_significand(OutputIt out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) { + // Buffer is large enough to hold digits (digits10 + 1) and a decimal point. + Char buffer[digits10<UInt>() + 2]; + auto end = write_significand(buffer, significand, significand_size, + integral_size, decimal_point); + return detail::copy_str<Char>(buffer, end, out); +} + +template <typename OutputIt, typename Char> +inline OutputIt write_significand(OutputIt out, const char* significand, + int significand_size, int integral_size, + Char decimal_point) { + out = detail::copy_str<Char>(significand, significand + integral_size, out); + if (!decimal_point) return out; + *out++ = decimal_point; + return detail::copy_str<Char>(significand + integral_size, + significand + significand_size, out); +} + +template <typename OutputIt, typename DecimalFP, typename Char> +OutputIt write_float(OutputIt out, const DecimalFP& fp, + const basic_format_specs<Char>& specs, float_specs fspecs, + Char decimal_point) { + auto significand = fp.significand; + int significand_size = get_significand_size(fp); + static const Char zero = static_cast<Char>('0'); + auto sign = fspecs.sign; + size_t size = to_unsigned(significand_size) + (sign ? 1 : 0); + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + + int output_exp = fp.exponent + significand_size - 1; + auto use_exp_format = [=]() { + if (fspecs.format == float_format::exp) return true; + if (fspecs.format != float_format::general) return false; + // Use the fixed notation if the exponent is in [exp_lower, exp_upper), + // e.g. 0.0001 instead of 1e-04. Otherwise use the exponent notation. + const int exp_lower = -4, exp_upper = 16; + return output_exp < exp_lower || + output_exp >= (fspecs.precision > 0 ? fspecs.precision : exp_upper); + }; + if (use_exp_format()) { + int num_zeros = 0; + if (fspecs.showpoint) { + num_zeros = (std::max)(fspecs.precision - significand_size, 0); + size += to_unsigned(num_zeros); + } else if (significand_size == 1) { + decimal_point = Char(); + } + auto abs_output_exp = output_exp >= 0 ? output_exp : -output_exp; + int exp_digits = 2; + if (abs_output_exp >= 100) exp_digits = abs_output_exp >= 1000 ? 4 : 3; + + size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits); + char exp_char = fspecs.upper ? 'E' : 'e'; + auto write = [=](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + // Insert a decimal point after the first digit and add an exponent. + it = write_significand(it, significand, significand_size, 1, + decimal_point); + if (num_zeros > 0) it = std::fill_n(it, num_zeros, zero); + *it++ = static_cast<Char>(exp_char); + return write_exponent<Char>(output_exp, it); + }; + return specs.width > 0 ? write_padded<align::right>(out, specs, size, write) + : base_iterator(out, write(reserve(out, size))); + } + + int exp = fp.exponent + significand_size; + if (fp.exponent >= 0) { + // 1234e5 -> 123400000[.0+] + size += to_unsigned(fp.exponent); + int num_zeros = fspecs.precision - exp; +#ifdef FMT_FUZZ + if (num_zeros > 5000) + throw std::runtime_error("fuzz mode - avoiding excessive cpu use"); +#endif + if (fspecs.showpoint) { + if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1; + if (num_zeros > 0) size += to_unsigned(num_zeros); + } + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + it = write_significand<Char>(it, significand, significand_size); + it = std::fill_n(it, fp.exponent, zero); + if (!fspecs.showpoint) return it; + *it++ = decimal_point; + return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it; + }); + } else if (exp > 0) { + // 1234e-2 -> 12.34[0+] + int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0; + size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + it = write_significand(it, significand, significand_size, exp, + decimal_point); + return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it; + }); + } + // 1234e-6 -> 0.001234 + int num_zeros = -exp; + if (significand_size == 0 && fspecs.precision >= 0 && + fspecs.precision < num_zeros) { + num_zeros = fspecs.precision; + } + size += 2 + to_unsigned(num_zeros); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = static_cast<Char>(data::signs[sign]); + *it++ = zero; + if (num_zeros == 0 && significand_size == 0 && !fspecs.showpoint) return it; + *it++ = decimal_point; + it = std::fill_n(it, num_zeros, zero); + return write_significand<Char>(it, significand, significand_size); + }); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_floating_point<T>::value)> +OutputIt write(OutputIt out, T value, basic_format_specs<Char> specs, + locale_ref loc = {}) { + if (const_check(!is_supported_floating_point(value))) return out; + float_specs fspecs = parse_float_type_spec(specs); + fspecs.sign = specs.sign; + if (std::signbit(value)) { // value < 0 is false for NaN so use signbit. + fspecs.sign = sign::minus; + value = -value; + } else if (fspecs.sign == sign::minus) { + fspecs.sign = sign::none; + } + + if (!std::isfinite(value)) + return write_nonfinite(out, std::isinf(value), specs, fspecs); + + if (specs.align == align::numeric && fspecs.sign) { + auto it = reserve(out, 1); + *it++ = static_cast<Char>(data::signs[fspecs.sign]); + out = base_iterator(out, it); + fspecs.sign = sign::none; + if (specs.width != 0) --specs.width; + } + + memory_buffer buffer; + if (fspecs.format == float_format::hex) { + if (fspecs.sign) buffer.push_back(data::signs[fspecs.sign]); + snprintf_float(promote_float(value), specs.precision, fspecs, buffer); + return write_bytes(out, {buffer.data(), buffer.size()}, specs); + } + int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6; + if (fspecs.format == float_format::exp) { + if (precision == max_value<int>()) + FMT_THROW(format_error("number is too big")); + else + ++precision; + } + if (const_check(std::is_same<T, float>())) fspecs.binary32 = true; + fspecs.use_grisu = is_fast_float<T>(); + int exp = format_float(promote_float(value), precision, fspecs, buffer); + fspecs.precision = precision; + Char point = + fspecs.locale ? decimal_point<Char>(loc) : static_cast<Char>('.'); + auto fp = big_decimal_fp{buffer.data(), static_cast<int>(buffer.size()), exp}; + return write_float(out, fp, specs, fspecs, point); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_fast_float<T>::value)> +OutputIt write(OutputIt out, T value) { + if (const_check(!is_supported_floating_point(value))) return out; + + using floaty = conditional_t<std::is_same<T, long double>::value, double, T>; + using uint = typename dragonbox::float_info<floaty>::carrier_uint; + auto bits = bit_cast<uint>(value); + + auto fspecs = float_specs(); + auto sign_bit = bits & (uint(1) << (num_bits<uint>() - 1)); + if (sign_bit != 0) { + fspecs.sign = sign::minus; + value = -value; + } + + static const auto specs = basic_format_specs<Char>(); + uint mask = exponent_mask<floaty>(); + if ((bits & mask) == mask) + return write_nonfinite(out, std::isinf(value), specs, fspecs); + + auto dec = dragonbox::to_decimal(static_cast<floaty>(value)); + return write_float(out, dec, specs, fspecs, static_cast<Char>('.')); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_floating_point<T>::value && + !is_fast_float<T>::value)> +inline OutputIt write(OutputIt out, T value) { + return write(out, value, basic_format_specs<Char>()); +} + +template <typename Char, typename OutputIt> +OutputIt write_char(OutputIt out, Char value, + const basic_format_specs<Char>& specs) { + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + return write_padded(out, specs, 1, [=](iterator it) { + *it++ = value; + return it; + }); +} + +template <typename Char, typename OutputIt, typename UIntPtr> +OutputIt write_ptr(OutputIt out, UIntPtr value, + const basic_format_specs<Char>* specs) { + int num_digits = count_digits<4>(value); + auto size = to_unsigned(num_digits) + size_t(2); + using iterator = remove_reference_t<decltype(reserve(out, 0))>; + auto write = [=](iterator it) { + *it++ = static_cast<Char>('0'); + *it++ = static_cast<Char>('x'); + return format_uint<4, Char>(it, value, num_digits); + }; + return specs ? write_padded<align::right>(out, *specs, size, write) + : base_iterator(out, write(reserve(out, size))); +} + +template <typename T> struct is_integral : std::is_integral<T> {}; +template <> struct is_integral<int128_t> : std::true_type {}; +template <> struct is_integral<uint128_t> : std::true_type {}; + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, monostate) { + FMT_ASSERT(false, ""); + return out; +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +OutputIt write(OutputIt out, string_view value) { + auto it = reserve(out, value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, basic_string_view<Char> value) { + auto it = reserve(out, value.size()); + it = std::copy(value.begin(), value.end(), it); + return base_iterator(out, it); +} + +template <typename Char> +buffer_appender<Char> write(buffer_appender<Char> out, + basic_string_view<Char> value) { + get_container(out).append(value.begin(), value.end()); + return out; +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + !std::is_same<T, Char>::value)> +OutputIt write(OutputIt out, T value) { + auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value); + bool negative = is_negative(value); + // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer. + if (negative) abs_value = ~abs_value + 1; + int num_digits = count_digits(abs_value); + auto size = (negative ? 1 : 0) + static_cast<size_t>(num_digits); + auto it = reserve(out, size); + if (auto ptr = to_pointer<Char>(it, size)) { + if (negative) *ptr++ = static_cast<Char>('-'); + format_decimal<Char>(ptr, abs_value, num_digits); + return out; + } + if (negative) *it++ = static_cast<Char>('-'); + it = format_decimal<Char>(it, abs_value, num_digits).end; + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, bool value) { + return write<Char>(out, string_view(value ? "true" : "false")); +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, Char value) { + auto it = reserve(out, 1); + *it++ = value; + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, const Char* value) { + if (!value) { + FMT_THROW(format_error("string pointer is null")); + } else { + auto length = std::char_traits<Char>::length(value); + out = write(out, basic_string_view<Char>(value, length)); + } + return out; +} + +template <typename Char, typename OutputIt> +OutputIt write(OutputIt out, const void* value) { + return write_ptr<Char>(out, to_uintptr(value), nullptr); +} + +template <typename Char, typename OutputIt, typename T> +auto write(OutputIt out, const T& value) -> typename std::enable_if< + mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value == + type::custom_type, + OutputIt>::type { + using context_type = basic_format_context<OutputIt, Char>; + using formatter_type = + conditional_t<has_formatter<T, context_type>::value, + typename context_type::template formatter_type<T>, + fallback_formatter<T, Char>>; + context_type ctx(out, {}, {}); + return formatter_type().format(value, ctx); +} + +// An argument visitor that formats the argument and writes it via the output +// iterator. It's a class and not a generic lambda for compatibility with C++11. +template <typename OutputIt, typename Char> struct default_arg_formatter { + using context = basic_format_context<OutputIt, Char>; + + OutputIt out; + basic_format_args<context> args; + locale_ref loc; + + template <typename T> OutputIt operator()(T value) { + return write<Char>(out, value); + } + + OutputIt operator()(typename basic_format_arg<context>::handle handle) { + basic_format_parse_context<Char> parse_ctx({}); + basic_format_context<OutputIt, Char> format_ctx(out, args, loc); + handle.format(parse_ctx, format_ctx); + return format_ctx.out(); + } +}; + +template <typename OutputIt, typename Char, + typename ErrorHandler = error_handler> +class arg_formatter_base { + public: + using iterator = OutputIt; + using char_type = Char; + using format_specs = basic_format_specs<Char>; + + private: + iterator out_; + locale_ref locale_; + format_specs* specs_; + + // Attempts to reserve space for n extra characters in the output range. + // Returns a pointer to the reserved range or a reference to out_. + auto reserve(size_t n) -> decltype(detail::reserve(out_, n)) { + return detail::reserve(out_, n); + } + + using reserve_iterator = remove_reference_t<decltype( + detail::reserve(std::declval<iterator&>(), 0))>; + + template <typename T> void write_int(T value, const format_specs& spec) { + using uint_type = uint32_or_64_or_128_t<T>; + int_writer<iterator, Char, uint_type> w(out_, locale_, value, spec); + handle_int_type_spec(spec.type, w); + out_ = w.out; + } + + void write(char value) { + auto&& it = reserve(1); + *it++ = value; + } + + template <typename Ch, FMT_ENABLE_IF(std::is_same<Ch, Char>::value)> + void write(Ch value) { + out_ = detail::write<Char>(out_, value); + } + + void write(string_view value) { + auto&& it = reserve(value.size()); + it = copy_str<Char>(value.begin(), value.end(), it); + } + void write(wstring_view value) { + static_assert(std::is_same<Char, wchar_t>::value, ""); + auto&& it = reserve(value.size()); + it = std::copy(value.begin(), value.end(), it); + } + + template <typename Ch> + void write(const Ch* s, size_t size, const format_specs& specs) { + auto width = specs.width != 0 + ? count_code_points(basic_string_view<Ch>(s, size)) + : 0; + out_ = write_padded(out_, specs, size, width, [=](reserve_iterator it) { + return copy_str<Char>(s, s + size, it); + }); + } + + template <typename Ch> + void write(basic_string_view<Ch> s, const format_specs& specs = {}) { + out_ = detail::write(out_, s, specs); + } + + void write_pointer(const void* p) { + out_ = write_ptr<char_type>(out_, to_uintptr(p), specs_); + } + + struct char_spec_handler : ErrorHandler { + arg_formatter_base& formatter; + Char value; + + char_spec_handler(arg_formatter_base& f, Char val) + : formatter(f), value(val) {} + + void on_int() { + // char is only formatted as int if there are specs. + formatter.write_int(static_cast<int>(value), *formatter.specs_); + } + void on_char() { + if (formatter.specs_) + formatter.out_ = write_char(formatter.out_, value, *formatter.specs_); + else + formatter.write(value); + } + }; + + struct cstring_spec_handler : error_handler { + arg_formatter_base& formatter; + const Char* value; + + cstring_spec_handler(arg_formatter_base& f, const Char* val) + : formatter(f), value(val) {} + + void on_string() { formatter.write(value); } + void on_pointer() { formatter.write_pointer(value); } + }; + + protected: + iterator out() { return out_; } + format_specs* specs() { return specs_; } + + void write(bool value) { + if (specs_) + write(string_view(value ? "true" : "false"), *specs_); + else + out_ = detail::write<Char>(out_, value); + } + + void write(const Char* value) { + if (!value) { + FMT_THROW(format_error("string pointer is null")); + } else { + auto length = std::char_traits<char_type>::length(value); + basic_string_view<char_type> sv(value, length); + specs_ ? write(sv, *specs_) : write(sv); + } + } + + public: + arg_formatter_base(OutputIt out, format_specs* s, locale_ref loc) + : out_(out), locale_(loc), specs_(s) {} + + iterator operator()(monostate) { + FMT_ASSERT(false, "invalid argument type"); + return out_; + } + + template <typename T, FMT_ENABLE_IF(is_integral<T>::value)> + FMT_INLINE iterator operator()(T value) { + if (specs_) + write_int(value, *specs_); + else + out_ = detail::write<Char>(out_, value); + return out_; + } + + iterator operator()(Char value) { + handle_char_specs(specs_, + char_spec_handler(*this, static_cast<Char>(value))); + return out_; + } + + iterator operator()(bool value) { + if (specs_ && specs_->type) return (*this)(value ? 1 : 0); + write(value != 0); + return out_; + } + + template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> + iterator operator()(T value) { + auto specs = specs_ ? *specs_ : format_specs(); + if (const_check(is_supported_floating_point(value))) + out_ = detail::write(out_, value, specs, locale_); + else + FMT_ASSERT(false, "unsupported float argument type"); + return out_; + } + + iterator operator()(const Char* value) { + if (!specs_) return write(value), out_; + handle_cstring_type_spec(specs_->type, cstring_spec_handler(*this, value)); + return out_; + } + + iterator operator()(basic_string_view<Char> value) { + if (specs_) { + check_string_type_spec(specs_->type, error_handler()); + write(value, *specs_); + } else { + write(value); + } + return out_; + } + + iterator operator()(const void* value) { + if (specs_) check_pointer_type_spec(specs_->type, error_handler()); + write_pointer(value); + return out_; + } +}; + +/** The default argument formatter. */ +template <typename OutputIt, typename Char> +class arg_formatter : public arg_formatter_base<OutputIt, Char> { + private: + using char_type = Char; + using base = arg_formatter_base<OutputIt, Char>; + using context_type = basic_format_context<OutputIt, Char>; + + context_type& ctx_; + basic_format_parse_context<char_type>* parse_ctx_; + const Char* ptr_; + + public: + using iterator = typename base::iterator; + using format_specs = typename base::format_specs; + + /** + \rst + Constructs an argument formatter object. + *ctx* is a reference to the formatting context, + *specs* contains format specifier information for standard argument types. + \endrst + */ + explicit arg_formatter( + context_type& ctx, + basic_format_parse_context<char_type>* parse_ctx = nullptr, + format_specs* specs = nullptr, const Char* ptr = nullptr) + : base(ctx.out(), specs, ctx.locale()), + ctx_(ctx), + parse_ctx_(parse_ctx), + ptr_(ptr) {} + + using base::operator(); + + /** Formats an argument of a user-defined type. */ + iterator operator()(typename basic_format_arg<context_type>::handle handle) { + if (ptr_) advance_to(*parse_ctx_, ptr_); + handle.format(*parse_ctx_, ctx_); + return ctx_.out(); + } +}; + +template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +// Parses the range [begin, end) as an unsigned integer. This function assumes +// that the range is non-empty and the first character is a digit. +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end, + ErrorHandler&& eh) { + FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); + unsigned value = 0; + // Convert to unsigned to prevent a warning. + constexpr unsigned max_int = max_value<int>(); + unsigned big = max_int / 10; + do { + // Check for overflow. + if (value > big) { + value = max_int + 1; + break; + } + value = value * 10 + unsigned(*begin - '0'); + ++begin; + } while (begin != end && '0' <= *begin && *begin <= '9'); + if (value > max_int) eh.on_error("number is too big"); + return static_cast<int>(value); +} + +template <typename Context> class custom_formatter { + private: + using char_type = typename Context::char_type; + + basic_format_parse_context<char_type>& parse_ctx_; + Context& ctx_; + + public: + explicit custom_formatter(basic_format_parse_context<char_type>& parse_ctx, + Context& ctx) + : parse_ctx_(parse_ctx), ctx_(ctx) {} + + void operator()(typename basic_format_arg<Context>::handle h) const { + h.format(parse_ctx_, ctx_); + } + + template <typename T> void operator()(T) const {} +}; + +template <typename T> +using is_integer = + bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value && + !std::is_same<T, char>::value && + !std::is_same<T, wchar_t>::value>; + +template <typename ErrorHandler> class width_checker { + public: + explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T value) { + if (is_negative(value)) handler_.on_error("negative width"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T) { + handler_.on_error("width is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +template <typename ErrorHandler> class precision_checker { + public: + explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T value) { + if (is_negative(value)) handler_.on_error("negative precision"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR unsigned long long operator()(T) { + handler_.on_error("precision is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +// A format specifier handler that sets fields in basic_format_specs. +template <typename Char> class specs_setter { + public: + explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs) + : specs_(specs) {} + + FMT_CONSTEXPR specs_setter(const specs_setter& other) + : specs_(other.specs_) {} + + FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } + FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) { + specs_.fill = fill; + } + FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; } + FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; } + FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; } + FMT_CONSTEXPR void on_hash() { specs_.alt = true; } + + FMT_CONSTEXPR void on_zero() { + specs_.align = align::numeric; + specs_.fill[0] = Char('0'); + } + + FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } + FMT_CONSTEXPR void on_precision(int precision) { + specs_.precision = precision; + } + FMT_CONSTEXPR void end_precision() {} + + FMT_CONSTEXPR void on_type(Char type) { + specs_.type = static_cast<char>(type); + } + + protected: + basic_format_specs<Char>& specs_; +}; + +template <typename ErrorHandler> class numeric_specs_checker { + public: + FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, detail::type arg_type) + : error_handler_(eh), arg_type_(arg_type) {} + + FMT_CONSTEXPR void require_numeric_argument() { + if (!is_arithmetic_type(arg_type_)) + error_handler_.on_error("format specifier requires numeric argument"); + } + + FMT_CONSTEXPR void check_sign() { + require_numeric_argument(); + if (is_integral_type(arg_type_) && arg_type_ != type::int_type && + arg_type_ != type::long_long_type && arg_type_ != type::char_type) { + error_handler_.on_error("format specifier requires signed argument"); + } + } + + FMT_CONSTEXPR void check_precision() { + if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type) + error_handler_.on_error("precision not allowed for this argument type"); + } + + private: + ErrorHandler& error_handler_; + detail::type arg_type_; +}; + +// A format specifier handler that checks if specifiers are consistent with the +// argument type. +template <typename Handler> class specs_checker : public Handler { + private: + numeric_specs_checker<Handler> checker_; + + // Suppress an MSVC warning about using this in initializer list. + FMT_CONSTEXPR Handler& error_handler() { return *this; } + + public: + FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type) + : Handler(handler), checker_(error_handler(), arg_type) {} + + FMT_CONSTEXPR specs_checker(const specs_checker& other) + : Handler(other), checker_(error_handler(), other.arg_type_) {} + + FMT_CONSTEXPR void on_align(align_t align) { + if (align == align::numeric) checker_.require_numeric_argument(); + Handler::on_align(align); + } + + FMT_CONSTEXPR void on_plus() { + checker_.check_sign(); + Handler::on_plus(); + } + + FMT_CONSTEXPR void on_minus() { + checker_.check_sign(); + Handler::on_minus(); + } + + FMT_CONSTEXPR void on_space() { + checker_.check_sign(); + Handler::on_space(); + } + + FMT_CONSTEXPR void on_hash() { + checker_.require_numeric_argument(); + Handler::on_hash(); + } + + FMT_CONSTEXPR void on_zero() { + checker_.require_numeric_argument(); + Handler::on_zero(); + } + + FMT_CONSTEXPR void end_precision() { checker_.check_precision(); } +}; + +template <template <typename> class Handler, typename FormatArg, + typename ErrorHandler> +FMT_CONSTEXPR int get_dynamic_spec(FormatArg arg, ErrorHandler eh) { + unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg); + if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big"); + return static_cast<int>(value); +} + +struct auto_id {}; + +template <typename Context, typename ID> +FMT_CONSTEXPR typename Context::format_arg get_arg(Context& ctx, ID id) { + auto arg = ctx.arg(id); + if (!arg) ctx.on_error("argument not found"); + return arg; +} + +// The standard format specifier handler with checking. +template <typename ParseContext, typename Context> +class specs_handler : public specs_setter<typename Context::char_type> { + public: + using char_type = typename Context::char_type; + + FMT_CONSTEXPR specs_handler(basic_format_specs<char_type>& specs, + ParseContext& parse_ctx, Context& ctx) + : specs_setter<char_type>(specs), + parse_context_(parse_ctx), + context_(ctx) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + this->specs_.width = get_dynamic_spec<width_checker>( + get_arg(arg_id), context_.error_handler()); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + this->specs_.precision = get_dynamic_spec<precision_checker>( + get_arg(arg_id), context_.error_handler()); + } + + void on_error(const char* message) { context_.on_error(message); } + + private: + // This is only needed for compatibility with gcc 4.4. + using format_arg = typename Context::format_arg; + + FMT_CONSTEXPR format_arg get_arg(auto_id) { + return detail::get_arg(context_, parse_context_.next_arg_id()); + } + + FMT_CONSTEXPR format_arg get_arg(int arg_id) { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + FMT_CONSTEXPR format_arg get_arg(basic_string_view<char_type> arg_id) { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + ParseContext& parse_context_; + Context& context_; +}; + +enum class arg_id_kind { none, index, name }; + +// An argument reference. +template <typename Char> struct arg_ref { + FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} + + FMT_CONSTEXPR explicit arg_ref(int index) + : kind(arg_id_kind::index), val(index) {} + FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name) + : kind(arg_id_kind::name), val(name) {} + + FMT_CONSTEXPR arg_ref& operator=(int idx) { + kind = arg_id_kind::index; + val.index = idx; + return *this; + } + + arg_id_kind kind; + union value { + FMT_CONSTEXPR value(int id = 0) : index{id} {} + FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {} + + int index; + basic_string_view<Char> name; + } val; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow re-using the same parsed specifiers with +// different sets of arguments (precompilation of format strings). +template <typename Char> +struct dynamic_format_specs : basic_format_specs<Char> { + arg_ref<Char> width_ref; + arg_ref<Char> precision_ref; +}; + +// Format spec handler that saves references to arguments representing dynamic +// width and precision to be resolved at formatting time. +template <typename ParseContext> +class dynamic_specs_handler + : public specs_setter<typename ParseContext::char_type> { + public: + using char_type = typename ParseContext::char_type; + + FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs, + ParseContext& ctx) + : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {} + + FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other) + : specs_setter<char_type>(other), + specs_(other.specs_), + context_(other.context_) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + specs_.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + specs_.precision_ref = make_arg_ref(arg_id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + using arg_ref_type = arg_ref<char_type>; + + FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) { + context_.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) { + return arg_ref_type(context_.next_arg_id()); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) { + context_.check_arg_id(arg_id); + basic_string_view<char_type> format_str( + context_.begin(), to_unsigned(context_.end() - context_.begin())); + return arg_ref_type(arg_id); + } + + dynamic_format_specs<char_type>& specs_; + ParseContext& context_; +}; + +template <typename Char, typename IDHandler> +FMT_CONSTEXPR const Char* parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) { + FMT_ASSERT(begin != end, ""); + Char c = *begin; + if (c == '}' || c == ':') { + handler(); + return begin; + } + if (c >= '0' && c <= '9') { + int index = 0; + if (c != '0') + index = parse_nonnegative_int(begin, end, handler); + else + ++begin; + if (begin == end || (*begin != '}' && *begin != ':')) + handler.on_error("invalid format string"); + else + handler(index); + return begin; + } + if (!is_name_start(c)) { + handler.on_error("invalid format string"); + return begin; + } + auto it = begin; + do { + ++it; + } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9'))); + handler(basic_string_view<Char>(begin, to_unsigned(it - begin))); + return it; +} + +// Adapts SpecHandler to IDHandler API for dynamic width. +template <typename SpecHandler, typename Char> struct width_adapter { + explicit FMT_CONSTEXPR width_adapter(SpecHandler& h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_width(id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } + + SpecHandler& handler; +}; + +// Adapts SpecHandler to IDHandler API for dynamic precision. +template <typename SpecHandler, typename Char> struct precision_adapter { + explicit FMT_CONSTEXPR precision_adapter(SpecHandler& h) : handler(h) {} + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_precision(id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } + + SpecHandler& handler; +}; + +template <typename Char> +FMT_CONSTEXPR int code_point_length(const Char* begin) { + if (const_check(sizeof(Char) != 1)) return 1; + constexpr char lengths[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 4, 0}; + int len = lengths[static_cast<unsigned char>(*begin) >> 3]; + + // Compute the pointer to the next character early so that the next + // iteration can start working on the next character. Neither Clang + // nor GCC figure out this reordering on their own. + return len + !len; +} + +template <typename Char> constexpr bool is_ascii_letter(Char c) { + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); +} + +// Converts a character to ASCII. Returns a number > 127 on conversion failure. +template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)> +constexpr Char to_ascii(Char value) { + return value; +} +template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)> +constexpr typename std::underlying_type<Char>::type to_ascii(Char value) { + return value; +} + +// Parses fill and alignment. +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end, + Handler&& handler) { + FMT_ASSERT(begin != end, ""); + auto align = align::none; + auto p = begin + code_point_length(begin); + if (p >= end) p = begin; + for (;;) { + switch (to_ascii(*p)) { + case '<': + align = align::left; + break; + case '>': + align = align::right; + break; +#if FMT_DEPRECATED_NUMERIC_ALIGN + case '=': + align = align::numeric; + break; +#endif + case '^': + align = align::center; + break; + } + if (align != align::none) { + if (p != begin) { + auto c = *begin; + if (c == '{') + return handler.on_error("invalid fill character '{'"), begin; + handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin))); + begin = p + 1; + } else + ++begin; + handler.on_align(align); + break; + } else if (p == begin) { + break; + } + p = begin; + } + return begin; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_width(const Char* begin, const Char* end, + Handler&& handler) { + FMT_ASSERT(begin != end, ""); + if ('0' <= *begin && *begin <= '9') { + handler.on_width(parse_nonnegative_int(begin, end, handler)); + } else if (*begin == '{') { + ++begin; + if (begin != end) + begin = parse_arg_id(begin, end, width_adapter<Handler, Char>(handler)); + if (begin == end || *begin != '}') + return handler.on_error("invalid format string"), begin; + ++begin; + } + return begin; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_precision(const Char* begin, const Char* end, + Handler&& handler) { + ++begin; + auto c = begin != end ? *begin : Char(); + if ('0' <= c && c <= '9') { + handler.on_precision(parse_nonnegative_int(begin, end, handler)); + } else if (c == '{') { + ++begin; + if (begin != end) { + begin = + parse_arg_id(begin, end, precision_adapter<Handler, Char>(handler)); + } + if (begin == end || *begin++ != '}') + return handler.on_error("invalid format string"), begin; + } else { + return handler.on_error("missing precision specifier"), begin; + } + handler.end_precision(); + return begin; +} + +// Parses standard format specifiers and sends notifications about parsed +// components to handler. +template <typename Char, typename SpecHandler> +FMT_CONSTEXPR const Char* parse_format_specs(const Char* begin, const Char* end, + SpecHandler&& handler) { + if (begin == end) return begin; + + begin = parse_align(begin, end, handler); + if (begin == end) return begin; + + // Parse sign. + switch (to_ascii(*begin)) { + case '+': + handler.on_plus(); + ++begin; + break; + case '-': + handler.on_minus(); + ++begin; + break; + case ' ': + handler.on_space(); + ++begin; + break; + } + if (begin == end) return begin; + + if (*begin == '#') { + handler.on_hash(); + if (++begin == end) return begin; + } + + // Parse zero flag. + if (*begin == '0') { + handler.on_zero(); + if (++begin == end) return begin; + } + + begin = parse_width(begin, end, handler); + if (begin == end) return begin; + + // Parse precision. + if (*begin == '.') { + begin = parse_precision(begin, end, handler); + } + + // Parse type. + if (begin != end && *begin != '}') handler.on_type(*begin++); + return begin; +} + +// Return the result via the out param to workaround gcc bug 77539. +template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*> +FMT_CONSTEXPR bool find(Ptr first, Ptr last, T value, Ptr& out) { + for (out = first; out != last; ++out) { + if (*out == value) return true; + } + return false; +} + +template <> +inline bool find<false, char>(const char* first, const char* last, char value, + const char*& out) { + out = static_cast<const char*>( + std::memchr(first, value, detail::to_unsigned(last - first))); + return out != nullptr; +} + +template <typename Handler, typename Char> struct id_adapter { + Handler& handler; + int arg_id; + + FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); } + FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + arg_id = handler.on_arg_id(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + handler.on_error(message); + } +}; + +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_replacement_field(const Char* begin, + const Char* end, + Handler&& handler) { + ++begin; + if (begin == end) return handler.on_error("invalid format string"), end; + if (*begin == '}') { + handler.on_replacement_field(handler.on_arg_id(), begin); + } else if (*begin == '{') { + handler.on_text(begin, begin + 1); + } else { + auto adapter = id_adapter<Handler, Char>{handler, 0}; + begin = parse_arg_id(begin, end, adapter); + Char c = begin != end ? *begin : Char(); + if (c == '}') { + handler.on_replacement_field(adapter.arg_id, begin); + } else if (c == ':') { + begin = handler.on_format_specs(adapter.arg_id, begin + 1, end); + if (begin == end || *begin != '}') + return handler.on_error("unknown format specifier"), end; + } else { + return handler.on_error("missing '}' in format string"), end; + } + } + return begin + 1; +} + +template <bool IS_CONSTEXPR, typename Char, typename Handler> +FMT_CONSTEXPR_DECL FMT_INLINE void parse_format_string( + basic_string_view<Char> format_str, Handler&& handler) { + auto begin = format_str.data(); + auto end = begin + format_str.size(); + if (end - begin < 32) { + // Use a simple loop instead of memchr for small strings. + const Char* p = begin; + while (p != end) { + auto c = *p++; + if (c == '{') { + handler.on_text(begin, p - 1); + begin = p = parse_replacement_field(p - 1, end, handler); + } else if (c == '}') { + if (p == end || *p != '}') + return handler.on_error("unmatched '}' in format string"); + handler.on_text(begin, p); + begin = ++p; + } + } + handler.on_text(begin, end); + return; + } + struct writer { + FMT_CONSTEXPR void operator()(const Char* pbegin, const Char* pend) { + if (pbegin == pend) return; + for (;;) { + const Char* p = nullptr; + if (!find<IS_CONSTEXPR>(pbegin, pend, '}', p)) + return handler_.on_text(pbegin, pend); + ++p; + if (p == pend || *p != '}') + return handler_.on_error("unmatched '}' in format string"); + handler_.on_text(pbegin, p); + pbegin = p + 1; + } + } + Handler& handler_; + } write{handler}; + while (begin != end) { + // Doing two passes with memchr (one for '{' and another for '}') is up to + // 2.5x faster than the naive one-pass implementation on big format strings. + const Char* p = begin; + if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, '{', p)) + return write(begin, end); + write(begin, p); + begin = parse_replacement_field(p, end, handler); + } +} + +template <typename T, typename ParseContext> +FMT_CONSTEXPR const typename ParseContext::char_type* parse_format_specs( + ParseContext& ctx) { + using char_type = typename ParseContext::char_type; + using context = buffer_context<char_type>; + using mapped_type = + conditional_t<detail::mapped_type_constant<T, context>::value != + type::custom_type, + decltype(arg_mapper<context>().map(std::declval<T>())), T>; + auto f = conditional_t<has_formatter<mapped_type, context>::value, + formatter<mapped_type, char_type>, + detail::fallback_formatter<T, char_type>>(); + return f.parse(ctx); +} + +template <typename OutputIt, typename Char, typename Context> +struct format_handler : detail::error_handler { + basic_format_parse_context<Char> parse_context; + Context context; + + format_handler(OutputIt out, basic_string_view<Char> str, + basic_format_args<Context> format_args, detail::locale_ref loc) + : parse_context(str), context(out, format_args, loc) {} + + void on_text(const Char* begin, const Char* end) { + auto size = to_unsigned(end - begin); + auto out = context.out(); + auto&& it = reserve(out, size); + it = std::copy_n(begin, size, it); + context.advance_to(out); + } + + int on_arg_id() { return parse_context.next_arg_id(); } + int on_arg_id(int id) { return parse_context.check_arg_id(id), id; } + int on_arg_id(basic_string_view<Char> id) { + int arg_id = context.arg_id(id); + if (arg_id < 0) on_error("argument not found"); + return arg_id; + } + + FMT_INLINE void on_replacement_field(int id, const Char*) { + auto arg = get_arg(context, id); + context.advance_to(visit_format_arg( + default_arg_formatter<OutputIt, Char>{context.out(), context.args(), + context.locale()}, + arg)); + } + + const Char* on_format_specs(int id, const Char* begin, const Char* end) { + auto arg = get_arg(context, id); + if (arg.type() == type::custom_type) { + advance_to(parse_context, begin); + visit_format_arg(custom_formatter<Context>(parse_context, context), arg); + return parse_context.begin(); + } + auto specs = basic_format_specs<Char>(); + if (begin + 1 < end && begin[1] == '}' && is_ascii_letter(*begin)) { + specs.type = static_cast<char>(*begin++); + } else { + using parse_context_t = basic_format_parse_context<Char>; + specs_checker<specs_handler<parse_context_t, Context>> handler( + specs_handler<parse_context_t, Context>(specs, parse_context, + context), + arg.type()); + begin = parse_format_specs(begin, end, handler); + if (begin == end || *begin != '}') + on_error("missing '}' in format string"); + } + context.advance_to(visit_format_arg( + arg_formatter<OutputIt, Char>(context, &parse_context, &specs), arg)); + return begin; + } +}; + +// A parse context with extra argument id checks. It is only used at compile +// time because adding checks at runtime would introduce substantial overhead +// and would be redundant since argument ids are checked when arguments are +// retrieved anyway. +template <typename Char, typename ErrorHandler = error_handler> +class compile_parse_context + : public basic_format_parse_context<Char, ErrorHandler> { + private: + int num_args_; + using base = basic_format_parse_context<Char, ErrorHandler>; + + public: + explicit FMT_CONSTEXPR compile_parse_context( + basic_string_view<Char> format_str, int num_args = max_value<int>(), + ErrorHandler eh = {}) + : base(format_str, eh), num_args_(num_args) {} + + FMT_CONSTEXPR int next_arg_id() { + int id = base::next_arg_id(); + if (id >= num_args_) this->on_error("argument not found"); + return id; + } + + FMT_CONSTEXPR void check_arg_id(int id) { + base::check_arg_id(id); + if (id >= num_args_) this->on_error("argument not found"); + } + using base::check_arg_id; +}; + +template <typename Char, typename ErrorHandler, typename... Args> +class format_string_checker { + public: + explicit FMT_CONSTEXPR format_string_checker( + basic_string_view<Char> format_str, ErrorHandler eh) + : context_(format_str, num_args, eh), + parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {} + + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + + FMT_CONSTEXPR int on_arg_id() { return context_.next_arg_id(); } + FMT_CONSTEXPR int on_arg_id(int id) { return context_.check_arg_id(id), id; } + FMT_CONSTEXPR int on_arg_id(basic_string_view<Char>) { + on_error("compile-time checks don't support named arguments"); + return 0; + } + + FMT_CONSTEXPR void on_replacement_field(int, const Char*) {} + + FMT_CONSTEXPR const Char* on_format_specs(int id, const Char* begin, + const Char*) { + advance_to(context_, begin); + return id < num_args ? parse_funcs_[id](context_) : begin; + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + using parse_context_type = compile_parse_context<Char, ErrorHandler>; + enum { num_args = sizeof...(Args) }; + + // Format specifier parsing function. + using parse_func = const Char* (*)(parse_context_type&); + + parse_context_type context_; + parse_func parse_funcs_[num_args > 0 ? num_args : 1]; +}; + +// Converts string literals to basic_string_view. +template <typename Char, size_t N> +FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view( + const Char (&s)[N]) { + // Remove trailing null character if needed. Won't be present if this is used + // with raw character array (i.e. not defined as a string). + return {s, + N - ((std::char_traits<Char>::to_int_type(s[N - 1]) == 0) ? 1 : 0)}; +} + +// Converts string_view to basic_string_view. +template <typename Char> +FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view( + const std_string_view<Char>& s) { + return {s.data(), s.size()}; +} + +#define FMT_STRING_IMPL(s, base) \ + [] { \ + /* Use a macro-like name to avoid shadowing warnings. */ \ + struct FMT_COMPILE_STRING : base { \ + using char_type = fmt::remove_cvref_t<decltype(s[0])>; \ + FMT_MAYBE_UNUSED FMT_CONSTEXPR \ + operator fmt::basic_string_view<char_type>() const { \ + return fmt::detail::compile_string_to_view<char_type>(s); \ + } \ + }; \ + return FMT_COMPILE_STRING(); \ + }() + +/** + \rst + Constructs a compile-time format string from a string literal *s*. + + **Example**:: + + // A compile-time error because 'd' is an invalid specifier for strings. + std::string s = fmt::format(FMT_STRING("{:d}"), "foo"); + \endrst + */ +#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::compile_string) + +template <typename... Args, typename S, + enable_if_t<(is_compile_string<S>::value), int>> +void check_format_string(S format_str) { + FMT_CONSTEXPR_DECL auto s = to_string_view(format_str); + using checker = format_string_checker<typename S::char_type, error_handler, + remove_cvref_t<Args>...>; + FMT_CONSTEXPR_DECL bool invalid_format = + (parse_format_string<true>(s, checker(s, {})), true); + (void)invalid_format; +} + +template <template <typename> class Handler, typename Context> +void handle_dynamic_spec(int& value, arg_ref<typename Context::char_type> ref, + Context& ctx) { + switch (ref.kind) { + case arg_id_kind::none: + break; + case arg_id_kind::index: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index), + ctx.error_handler()); + break; + case arg_id_kind::name: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name), + ctx.error_handler()); + break; + } +} + +using format_func = void (*)(detail::buffer<char>&, int, string_view); + +FMT_API void format_error_code(buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT; + +FMT_API void report_error(format_func func, int error_code, + string_view message) FMT_NOEXCEPT; +} // namespace detail + +template <typename OutputIt, typename Char> +using arg_formatter FMT_DEPRECATED_ALIAS = + detail::arg_formatter<OutputIt, Char>; + +/** + An error returned by an operating system or a language runtime, + for example a file opening error. +*/ +FMT_CLASS_API +class FMT_API system_error : public std::runtime_error { + private: + void init(int err_code, string_view format_str, format_args args); + + protected: + int error_code_; + + system_error() : std::runtime_error(""), error_code_(0) {} + + public: + /** + \rst + Constructs a :class:`fmt::system_error` object with a description + formatted with `fmt::format_system_error`. *message* and additional + arguments passed into the constructor are formatted similarly to + `fmt::format`. + + **Example**:: + + // This throws a system_error with the description + // cannot open file 'madeup': No such file or directory + // or similar (system message may vary). + const char *filename = "madeup"; + std::FILE *file = std::fopen(filename, "r"); + if (!file) + throw fmt::system_error(errno, "cannot open file '{}'", filename); + \endrst + */ + template <typename... Args> + system_error(int error_code, string_view message, const Args&... args) + : std::runtime_error("") { + init(error_code, message, make_format_args(args...)); + } + system_error(const system_error&) = default; + system_error& operator=(const system_error&) = default; + system_error(system_error&&) = default; + system_error& operator=(system_error&&) = default; + ~system_error() FMT_NOEXCEPT FMT_OVERRIDE; + + int error_code() const { return error_code_; } +}; + +/** + \rst + Formats an error returned by an operating system or a language runtime, + for example a file opening error, and writes it to *out* in the following + form: + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the passed message and *<system-message>* is + the system message corresponding to the error code. + *error_code* is a system error code as given by ``errno``. + If *error_code* is not a valid error code such as -1, the system message + may look like "Unknown error -1" and is platform-dependent. + \endrst + */ +FMT_API void format_system_error(detail::buffer<char>& out, int error_code, + string_view message) FMT_NOEXCEPT; + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, + string_view message) FMT_NOEXCEPT; + +/** Fast integer formatter. */ +class format_int { + private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum { buffer_size = std::numeric_limits<unsigned long long>::digits10 + 3 }; + mutable char buffer_[buffer_size]; + char* str_; + + template <typename UInt> char* format_unsigned(UInt value) { + auto n = static_cast<detail::uint32_or_64_or_128_t<UInt>>(value); + return detail::format_decimal(buffer_, n, buffer_size - 1).begin; + } + + template <typename Int> char* format_signed(Int value) { + auto abs_value = static_cast<detail::uint32_or_64_or_128_t<Int>>(value); + bool negative = value < 0; + if (negative) abs_value = 0 - abs_value; + auto begin = format_unsigned(abs_value); + if (negative) *--begin = '-'; + return begin; + } + + public: + explicit format_int(int value) : str_(format_signed(value)) {} + explicit format_int(long value) : str_(format_signed(value)) {} + explicit format_int(long long value) : str_(format_signed(value)) {} + explicit format_int(unsigned value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long long value) + : str_(format_unsigned(value)) {} + + /** Returns the number of characters written to the output buffer. */ + size_t size() const { + return detail::to_unsigned(buffer_ - str_ + buffer_size - 1); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + const char* data() const { return str_; } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + const char* c_str() const { + buffer_[buffer_size - 1] = '\0'; + return str_; + } + + /** + \rst + Returns the content of the output buffer as an ``std::string``. + \endrst + */ + std::string str() const { return std::string(str_, size()); } +}; + +// A formatter specialization for the core types corresponding to detail::type +// constants. +template <typename T, typename Char> +struct formatter<T, Char, + enable_if_t<detail::type_constant<T, Char>::value != + detail::type::custom_type>> { + FMT_CONSTEXPR formatter() = default; + + // Parses format specifiers stopping either at the end of the range or at the + // terminating '}'. + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + using handler_type = detail::dynamic_specs_handler<ParseContext>; + auto type = detail::type_constant<T, Char>::value; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + auto eh = ctx.error_handler(); + switch (type) { + case detail::type::none_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case detail::type::int_type: + case detail::type::uint_type: + case detail::type::long_long_type: + case detail::type::ulong_long_type: + case detail::type::int128_type: + case detail::type::uint128_type: + case detail::type::bool_type: + handle_int_type_spec(specs_.type, + detail::int_type_checker<decltype(eh)>(eh)); + break; + case detail::type::char_type: + handle_char_specs( + &specs_, detail::char_specs_checker<decltype(eh)>(specs_.type, eh)); + break; + case detail::type::float_type: + if (detail::const_check(FMT_USE_FLOAT)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "float support disabled"); + break; + case detail::type::double_type: + if (detail::const_check(FMT_USE_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "double support disabled"); + break; + case detail::type::long_double_type: + if (detail::const_check(FMT_USE_LONG_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "long double support disabled"); + break; + case detail::type::cstring_type: + detail::handle_cstring_type_spec( + specs_.type, detail::cstring_type_checker<decltype(eh)>(eh)); + break; + case detail::type::string_type: + detail::check_string_type_spec(specs_.type, eh); + break; + case detail::type::pointer_type: + detail::check_pointer_type_spec(specs_.type, eh); + break; + case detail::type::custom_type: + // Custom format specifiers should be checked in parse functions of + // formatter specializations. + break; + } + return it; + } + + template <typename FormatContext> + auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + using af = detail::arg_formatter<typename FormatContext::iterator, + typename FormatContext::char_type>; + return visit_format_arg(af(ctx, nullptr, &specs_), + detail::make_arg<FormatContext>(val)); + } + + private: + detail::dynamic_format_specs<Char> specs_; +}; + +#define FMT_FORMAT_AS(Type, Base) \ + template <typename Char> \ + struct formatter<Type, Char> : formatter<Base, Char> { \ + template <typename FormatContext> \ + auto format(Type const& val, FormatContext& ctx) -> decltype(ctx.out()) { \ + return formatter<Base, Char>::format(val, ctx); \ + } \ + } + +FMT_FORMAT_AS(signed char, int); +FMT_FORMAT_AS(unsigned char, unsigned); +FMT_FORMAT_AS(short, int); +FMT_FORMAT_AS(unsigned short, unsigned); +FMT_FORMAT_AS(long, long long); +FMT_FORMAT_AS(unsigned long, unsigned long long); +FMT_FORMAT_AS(Char*, const Char*); +FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>); +FMT_FORMAT_AS(std::nullptr_t, const void*); +FMT_FORMAT_AS(detail::std_string_view<Char>, basic_string_view<Char>); + +template <typename Char> +struct formatter<void*, Char> : formatter<const void*, Char> { + template <typename FormatContext> + auto format(void* val, FormatContext& ctx) -> decltype(ctx.out()) { + return formatter<const void*, Char>::format(val, ctx); + } +}; + +template <typename Char, size_t N> +struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> { + template <typename FormatContext> + auto format(const Char* val, FormatContext& ctx) -> decltype(ctx.out()) { + return formatter<basic_string_view<Char>, Char>::format(val, ctx); + } +}; + +// A formatter for types known only at run time such as variant alternatives. +// +// Usage: +// using variant = std::variant<int, std::string>; +// template <> +// struct formatter<variant>: dynamic_formatter<> { +// auto format(const variant& v, format_context& ctx) { +// return visit([&](const auto& val) { +// return dynamic_formatter<>::format(val, ctx); +// }, v); +// } +// }; +template <typename Char = char> class dynamic_formatter { + private: + struct null_handler : detail::error_handler { + void on_align(align_t) {} + void on_plus() {} + void on_minus() {} + void on_space() {} + void on_hash() {} + }; + + public: + template <typename ParseContext> + auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + format_str_ = ctx.begin(); + // Checks are deferred to formatting time when the argument type is known. + detail::dynamic_specs_handler<ParseContext> handler(specs_, ctx); + return parse_format_specs(ctx.begin(), ctx.end(), handler); + } + + template <typename T, typename FormatContext> + auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { + handle_specs(ctx); + detail::specs_checker<null_handler> checker( + null_handler(), detail::mapped_type_constant<T, FormatContext>::value); + checker.on_align(specs_.align); + switch (specs_.sign) { + case sign::none: + break; + case sign::plus: + checker.on_plus(); + break; + case sign::minus: + checker.on_minus(); + break; + case sign::space: + checker.on_space(); + break; + } + if (specs_.alt) checker.on_hash(); + if (specs_.precision >= 0) checker.end_precision(); + using af = detail::arg_formatter<typename FormatContext::iterator, + typename FormatContext::char_type>; + visit_format_arg(af(ctx, nullptr, &specs_), + detail::make_arg<FormatContext>(val)); + return ctx.out(); + } + + private: + template <typename Context> void handle_specs(Context& ctx) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + } + + detail::dynamic_format_specs<Char> specs_; + const Char* format_str_; +}; + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void advance_to( + basic_format_parse_context<Char, ErrorHandler>& ctx, const Char* p) { + ctx.advance_to(ctx.begin() + (p - &*ctx.begin())); +} + +/** + \rst + Converts ``p`` to ``const void*`` for pointer formatting. + + **Example**:: + + auto s = fmt::format("{}", fmt::ptr(p)); + \endrst + */ +template <typename T> inline const void* ptr(const T* p) { return p; } +template <typename T> inline const void* ptr(const std::unique_ptr<T>& p) { + return p.get(); +} +template <typename T> inline const void* ptr(const std::shared_ptr<T>& p) { + return p.get(); +} + +class bytes { + private: + string_view data_; + friend struct formatter<bytes>; + + public: + explicit bytes(string_view data) : data_(data) {} +}; + +template <> struct formatter<bytes> { + private: + detail::dynamic_format_specs<char> specs_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + using handler_type = detail::dynamic_specs_handler<ParseContext>; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + detail::type::string_type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + detail::check_string_type_spec(specs_.type, ctx.error_handler()); + return it; + } + + template <typename FormatContext> + auto format(bytes b, FormatContext& ctx) -> decltype(ctx.out()) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + return detail::write_bytes(ctx.out(), b.data_, specs_); + } +}; + +template <typename It, typename Sentinel, typename Char> +struct arg_join : detail::view { + It begin; + Sentinel end; + basic_string_view<Char> sep; + + arg_join(It b, Sentinel e, basic_string_view<Char> s) + : begin(b), end(e), sep(s) {} +}; + +template <typename It, typename Sentinel, typename Char> +struct formatter<arg_join<It, Sentinel, Char>, Char> + : formatter<typename std::iterator_traits<It>::value_type, Char> { + template <typename FormatContext> + auto format(const arg_join<It, Sentinel, Char>& value, FormatContext& ctx) + -> decltype(ctx.out()) { + using base = formatter<typename std::iterator_traits<It>::value_type, Char>; + auto it = value.begin; + auto out = ctx.out(); + if (it != value.end) { + out = base::format(*it++, ctx); + while (it != value.end) { + out = std::copy(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + out = base::format(*it++, ctx); + } + } + return out; + } +}; + +/** + Returns an object that formats the iterator range `[begin, end)` with elements + separated by `sep`. + */ +template <typename It, typename Sentinel> +arg_join<It, Sentinel, char> join(It begin, Sentinel end, string_view sep) { + return {begin, end, sep}; +} + +template <typename It, typename Sentinel> +arg_join<It, Sentinel, wchar_t> join(It begin, Sentinel end, wstring_view sep) { + return {begin, end, sep}; +} + +/** + \rst + Returns an object that formats `range` with elements separated by `sep`. + + **Example**:: + + std::vector<int> v = {1, 2, 3}; + fmt::print("{}", fmt::join(v, ", ")); + // Output: "1, 2, 3" + + ``fmt::join`` applies passed format specifiers to the range elements:: + + fmt::print("{:02}", fmt::join(v, ", ")); + // Output: "01, 02, 03" + \endrst + */ +template <typename Range> +arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, char> join( + Range&& range, string_view sep) { + return join(std::begin(range), std::end(range), sep); +} + +template <typename Range> +arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, wchar_t> join( + Range&& range, wstring_view sep) { + return join(std::begin(range), std::end(range), sep); +} + +/** + \rst + Converts *value* to ``std::string`` using the default format for type *T*. + + **Example**:: + + #include <fmt/format.h> + + std::string answer = fmt::to_string(42); + \endrst + */ +template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> +inline std::string to_string(const T& value) { + std::string result; + detail::write<char>(std::back_inserter(result), value); + return result; +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline std::string to_string(T value) { + // The buffer should be large enough to store the number including the sign or + // "false" for bool. + constexpr int max_size = detail::digits10<T>() + 2; + char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5]; + char* begin = buffer; + return std::string(begin, detail::write<char>(begin, value)); +} + +/** + Converts *value* to ``std::wstring`` using the default format for type *T*. + */ +template <typename T> inline std::wstring to_wstring(const T& value) { + return format(L"{}", value); +} + +template <typename Char, size_t SIZE> +std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE>& buf) { + auto size = buf.size(); + detail::assume(size < std::basic_string<Char>().max_size()); + return std::basic_string<Char>(buf.data(), size); +} + +template <typename Char> +void detail::vformat_to( + detail::buffer<Char>& buf, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args, + detail::locale_ref loc) { + using iterator = typename buffer_context<Char>::iterator; + auto out = buffer_appender<Char>(buf); + if (format_str.size() == 2 && equal2(format_str.data(), "{}")) { + auto arg = args.get(0); + if (!arg) error_handler().on_error("argument not found"); + visit_format_arg(default_arg_formatter<iterator, Char>{out, args, loc}, + arg); + return; + } + format_handler<iterator, Char, buffer_context<Char>> h(out, format_str, args, + loc); + parse_format_string<false>(format_str, h); +} + +#ifndef FMT_HEADER_ONLY +extern template void detail::vformat_to(detail::buffer<char>&, string_view, + basic_format_args<format_context>, + detail::locale_ref); +namespace detail { + +extern template FMT_API std::string grouping_impl<char>(locale_ref loc); +extern template FMT_API std::string grouping_impl<wchar_t>(locale_ref loc); +extern template FMT_API char thousands_sep_impl<char>(locale_ref loc); +extern template FMT_API wchar_t thousands_sep_impl<wchar_t>(locale_ref loc); +extern template FMT_API char decimal_point_impl(locale_ref loc); +extern template FMT_API wchar_t decimal_point_impl(locale_ref loc); +extern template int format_float<double>(double value, int precision, + float_specs specs, buffer<char>& buf); +extern template int format_float<long double>(long double value, int precision, + float_specs specs, + buffer<char>& buf); +int snprintf_float(float value, int precision, float_specs specs, + buffer<char>& buf) = delete; +extern template int snprintf_float<double>(double value, int precision, + float_specs specs, + buffer<char>& buf); +extern template int snprintf_float<long double>(long double value, + int precision, + float_specs specs, + buffer<char>& buf); +} // namespace detail +#endif + +template <typename S, typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_string<S>::value)> +inline void vformat_to( + detail::buffer<Char>& buf, const S& format_str, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args) { + return detail::vformat_to(buf, to_string_view(format_str), args); +} + +template <typename S, typename... Args, size_t SIZE = inline_buffer_size, + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> +inline typename buffer_context<Char>::iterator format_to( + basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) { + const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...); + detail::vformat_to(buf, to_string_view(format_str), vargs); + return detail::buffer_appender<Char>(buf); +} + +template <typename OutputIt, typename Char = char> +using format_context_t = basic_format_context<OutputIt, Char>; + +template <typename OutputIt, typename Char = char> +using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>; + +template <typename OutputIt, typename Char = typename OutputIt::value_type> +using format_to_n_context FMT_DEPRECATED_ALIAS = buffer_context<Char>; + +template <typename OutputIt, typename Char = typename OutputIt::value_type> +using format_to_n_args FMT_DEPRECATED_ALIAS = + basic_format_args<buffer_context<Char>>; + +template <typename OutputIt, typename Char, typename... Args> +FMT_DEPRECATED format_arg_store<buffer_context<Char>, Args...> +make_format_to_n_args(const Args&... args) { + return format_arg_store<buffer_context<Char>, Args...>(args...); +} + +template <typename Char, enable_if_t<(!std::is_same<Char, char>::value), int>> +std::basic_string<Char> detail::vformat( + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + detail::vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)> +void vprint(std::FILE* f, basic_string_view<Char> format_str, + wformat_args args) { + wmemory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + buffer.push_back(L'\0'); + if (std::fputws(buffer.data(), f) == -1) + FMT_THROW(system_error(errno, "cannot write to file")); +} + +template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)> +void vprint(basic_string_view<Char> format_str, wformat_args args) { + vprint(stdout, format_str, args); +} + +#if FMT_USE_USER_DEFINED_LITERALS +namespace detail { + +# if FMT_USE_UDL_TEMPLATE +template <typename Char, Char... CHARS> class udl_formatter { + public: + template <typename... Args> + std::basic_string<Char> operator()(Args&&... args) const { + static FMT_CONSTEXPR_DECL Char s[] = {CHARS..., '\0'}; + return format(FMT_STRING(s), std::forward<Args>(args)...); + } +}; +# else +template <typename Char> struct udl_formatter { + basic_string_view<Char> str; + + template <typename... Args> + std::basic_string<Char> operator()(Args&&... args) const { + return format(str, std::forward<Args>(args)...); + } +}; +# endif // FMT_USE_UDL_TEMPLATE + +template <typename Char> struct udl_arg { + const Char* str; + + template <typename T> named_arg<Char, T> operator=(T&& value) const { + return {str, std::forward<T>(value)}; + } +}; +} // namespace detail + +inline namespace literals { +# if FMT_USE_UDL_TEMPLATE +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wpedantic" +# if FMT_CLANG_VERSION +# pragma GCC diagnostic ignored "-Wgnu-string-literal-operator-template" +# endif +template <typename Char, Char... CHARS> +FMT_CONSTEXPR detail::udl_formatter<Char, CHARS...> operator""_format() { + return {}; +} +# pragma GCC diagnostic pop +# else +/** + \rst + User-defined literal equivalent of :func:`fmt::format`. + + **Example**:: + + using namespace fmt::literals; + std::string message = "The answer is {}"_format(42); + \endrst + */ +FMT_CONSTEXPR detail::udl_formatter<char> operator"" _format(const char* s, + size_t n) { + return {{s, n}}; +} +FMT_CONSTEXPR detail::udl_formatter<wchar_t> operator"" _format( + const wchar_t* s, size_t n) { + return {{s, n}}; +} +# endif // FMT_USE_UDL_TEMPLATE + +/** + \rst + User-defined literal equivalent of :func:`fmt::arg`. + + **Example**:: + + using namespace fmt::literals; + fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); + \endrst + */ +FMT_CONSTEXPR detail::udl_arg<char> operator"" _a(const char* s, size_t) { + return {s}; +} +FMT_CONSTEXPR detail::udl_arg<wchar_t> operator"" _a(const wchar_t* s, size_t) { + return {s}; +} +} // namespace literals +#endif // FMT_USE_USER_DEFINED_LITERALS +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format-inl.h" +#else +# define FMT_FUNC +#endif + +#endif // FMT_FORMAT_H_ |