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authorBobTheBob <32057864+BobTheBob9@users.noreply.github.com>2022-08-24 00:32:31 +0100
committerGitHub <noreply@github.com>2022-08-24 00:32:31 +0100
commitf9bc3c9d1834cb8bd5f872b749b057c33e8b0102 (patch)
treee96e2da0d95798dd42eddf644a82a74555db858f /NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h
parent812893d8219daa60f5b5b7fd22cbd6b175603399 (diff)
downloadNorthstarLauncher-f9bc3c9d1834cb8bd5f872b749b057c33e8b0102.tar.gz
NorthstarLauncher-f9bc3c9d1834cb8bd5f872b749b057c33e8b0102.zip
Adjust folder structure (#242)
* Adjust folder structure * change launcher directory name
Diffstat (limited to 'NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h')
-rw-r--r--NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h3960
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diff --git a/NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h b/NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h
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--- a/NorthstarDedicatedTest/include/spdlog/fmt/bundled/format.h
+++ /dev/null
@@ -1,3960 +0,0 @@
-/*
- 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_