diff options
Diffstat (limited to 'NorthstarDedicatedTest/include/spdlog/fmt/bundled/core.h')
| -rw-r--r-- | NorthstarDedicatedTest/include/spdlog/fmt/bundled/core.h | 2122 |
1 files changed, 0 insertions, 2122 deletions
diff --git a/NorthstarDedicatedTest/include/spdlog/fmt/bundled/core.h b/NorthstarDedicatedTest/include/spdlog/fmt/bundled/core.h deleted file mode 100644 index 0a81e0cc..00000000 --- a/NorthstarDedicatedTest/include/spdlog/fmt/bundled/core.h +++ /dev/null @@ -1,2122 +0,0 @@ -// 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_ |