diff options
Diffstat (limited to 'contrib/libc++/src/string.cpp')
| -rw-r--r-- | contrib/libc++/src/string.cpp | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/contrib/libc++/src/string.cpp b/contrib/libc++/src/string.cpp deleted file mode 100644 index 4802d63c811b..000000000000 --- a/contrib/libc++/src/string.cpp +++ /dev/null @@ -1,458 +0,0 @@ -//===------------------------- string.cpp ---------------------------------===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// - -#include "string" -#include "charconv" -#include "cstdlib" -#include "cwchar" -#include "cerrno" -#include "limits" -#include "stdexcept" -#include <stdio.h> -#include "__debug" - -_LIBCPP_BEGIN_NAMESPACE_STD - -template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __basic_string_common<true>; - -template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_string<char>; -template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_string<wchar_t>; - -template - string - operator+<char, char_traits<char>, allocator<char> >(char const*, string const&); - -namespace -{ - -template<typename T> -inline -void throw_helper( const string& msg ) -{ -#ifndef _LIBCPP_NO_EXCEPTIONS - throw T( msg ); -#else - fprintf(stderr, "%s\n", msg.c_str()); - _VSTD::abort(); -#endif -} - -inline -void throw_from_string_out_of_range( const string& func ) -{ - throw_helper<out_of_range>(func + ": out of range"); -} - -inline -void throw_from_string_invalid_arg( const string& func ) -{ - throw_helper<invalid_argument>(func + ": no conversion"); -} - -// as_integer - -template<typename V, typename S, typename F> -inline -V -as_integer_helper(const string& func, const S& str, size_t* idx, int base, F f) -{ - typename S::value_type* ptr = nullptr; - const typename S::value_type* const p = str.c_str(); - typename remove_reference<decltype(errno)>::type errno_save = errno; - errno = 0; - V r = f(p, &ptr, base); - swap(errno, errno_save); - if (errno_save == ERANGE) - throw_from_string_out_of_range(func); - if (ptr == p) - throw_from_string_invalid_arg(func); - if (idx) - *idx = static_cast<size_t>(ptr - p); - return r; -} - -template<typename V, typename S> -inline -V -as_integer(const string& func, const S& s, size_t* idx, int base); - -// string -template<> -inline -int -as_integer(const string& func, const string& s, size_t* idx, int base ) -{ - // Use long as no Standard string to integer exists. - long r = as_integer_helper<long>( func, s, idx, base, strtol ); - if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r) - throw_from_string_out_of_range(func); - return static_cast<int>(r); -} - -template<> -inline -long -as_integer(const string& func, const string& s, size_t* idx, int base ) -{ - return as_integer_helper<long>( func, s, idx, base, strtol ); -} - -template<> -inline -unsigned long -as_integer( const string& func, const string& s, size_t* idx, int base ) -{ - return as_integer_helper<unsigned long>( func, s, idx, base, strtoul ); -} - -template<> -inline -long long -as_integer( const string& func, const string& s, size_t* idx, int base ) -{ - return as_integer_helper<long long>( func, s, idx, base, strtoll ); -} - -template<> -inline -unsigned long long -as_integer( const string& func, const string& s, size_t* idx, int base ) -{ - return as_integer_helper<unsigned long long>( func, s, idx, base, strtoull ); -} - -// wstring -template<> -inline -int -as_integer( const string& func, const wstring& s, size_t* idx, int base ) -{ - // Use long as no Stantard string to integer exists. - long r = as_integer_helper<long>( func, s, idx, base, wcstol ); - if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r) - throw_from_string_out_of_range(func); - return static_cast<int>(r); -} - -template<> -inline -long -as_integer( const string& func, const wstring& s, size_t* idx, int base ) -{ - return as_integer_helper<long>( func, s, idx, base, wcstol ); -} - -template<> -inline -unsigned long -as_integer( const string& func, const wstring& s, size_t* idx, int base ) -{ - return as_integer_helper<unsigned long>( func, s, idx, base, wcstoul ); -} - -template<> -inline -long long -as_integer( const string& func, const wstring& s, size_t* idx, int base ) -{ - return as_integer_helper<long long>( func, s, idx, base, wcstoll ); -} - -template<> -inline -unsigned long long -as_integer( const string& func, const wstring& s, size_t* idx, int base ) -{ - return as_integer_helper<unsigned long long>( func, s, idx, base, wcstoull ); -} - -// as_float - -template<typename V, typename S, typename F> -inline -V -as_float_helper(const string& func, const S& str, size_t* idx, F f ) -{ - typename S::value_type* ptr = nullptr; - const typename S::value_type* const p = str.c_str(); - typename remove_reference<decltype(errno)>::type errno_save = errno; - errno = 0; - V r = f(p, &ptr); - swap(errno, errno_save); - if (errno_save == ERANGE) - throw_from_string_out_of_range(func); - if (ptr == p) - throw_from_string_invalid_arg(func); - if (idx) - *idx = static_cast<size_t>(ptr - p); - return r; -} - -template<typename V, typename S> -inline -V as_float( const string& func, const S& s, size_t* idx = nullptr ); - -template<> -inline -float -as_float( const string& func, const string& s, size_t* idx ) -{ - return as_float_helper<float>( func, s, idx, strtof ); -} - -template<> -inline -double -as_float(const string& func, const string& s, size_t* idx ) -{ - return as_float_helper<double>( func, s, idx, strtod ); -} - -template<> -inline -long double -as_float( const string& func, const string& s, size_t* idx ) -{ - return as_float_helper<long double>( func, s, idx, strtold ); -} - -template<> -inline -float -as_float( const string& func, const wstring& s, size_t* idx ) -{ - return as_float_helper<float>( func, s, idx, wcstof ); -} - -template<> -inline -double -as_float( const string& func, const wstring& s, size_t* idx ) -{ - return as_float_helper<double>( func, s, idx, wcstod ); -} - -template<> -inline -long double -as_float( const string& func, const wstring& s, size_t* idx ) -{ - return as_float_helper<long double>( func, s, idx, wcstold ); -} - -} // unnamed namespace - -int -stoi(const string& str, size_t* idx, int base) -{ - return as_integer<int>( "stoi", str, idx, base ); -} - -int -stoi(const wstring& str, size_t* idx, int base) -{ - return as_integer<int>( "stoi", str, idx, base ); -} - -long -stol(const string& str, size_t* idx, int base) -{ - return as_integer<long>( "stol", str, idx, base ); -} - -long -stol(const wstring& str, size_t* idx, int base) -{ - return as_integer<long>( "stol", str, idx, base ); -} - -unsigned long -stoul(const string& str, size_t* idx, int base) -{ - return as_integer<unsigned long>( "stoul", str, idx, base ); -} - -unsigned long -stoul(const wstring& str, size_t* idx, int base) -{ - return as_integer<unsigned long>( "stoul", str, idx, base ); -} - -long long -stoll(const string& str, size_t* idx, int base) -{ - return as_integer<long long>( "stoll", str, idx, base ); -} - -long long -stoll(const wstring& str, size_t* idx, int base) -{ - return as_integer<long long>( "stoll", str, idx, base ); -} - -unsigned long long -stoull(const string& str, size_t* idx, int base) -{ - return as_integer<unsigned long long>( "stoull", str, idx, base ); -} - -unsigned long long -stoull(const wstring& str, size_t* idx, int base) -{ - return as_integer<unsigned long long>( "stoull", str, idx, base ); -} - -float -stof(const string& str, size_t* idx) -{ - return as_float<float>( "stof", str, idx ); -} - -float -stof(const wstring& str, size_t* idx) -{ - return as_float<float>( "stof", str, idx ); -} - -double -stod(const string& str, size_t* idx) -{ - return as_float<double>( "stod", str, idx ); -} - -double -stod(const wstring& str, size_t* idx) -{ - return as_float<double>( "stod", str, idx ); -} - -long double -stold(const string& str, size_t* idx) -{ - return as_float<long double>( "stold", str, idx ); -} - -long double -stold(const wstring& str, size_t* idx) -{ - return as_float<long double>( "stold", str, idx ); -} - -// to_string - -namespace -{ - -// as_string - -template<typename S, typename P, typename V > -inline -S -as_string(P sprintf_like, S s, const typename S::value_type* fmt, V a) -{ - typedef typename S::size_type size_type; - size_type available = s.size(); - while (true) - { - int status = sprintf_like(&s[0], available + 1, fmt, a); - if ( status >= 0 ) - { - size_type used = static_cast<size_type>(status); - if ( used <= available ) - { - s.resize( used ); - break; - } - available = used; // Assume this is advice of how much space we need. - } - else - available = available * 2 + 1; - s.resize(available); - } - return s; -} - -template <class S> -struct initial_string; - -template <> -struct initial_string<string> -{ - string - operator()() const - { - string s; - s.resize(s.capacity()); - return s; - } -}; - -template <> -struct initial_string<wstring> -{ - wstring - operator()() const - { - wstring s(20, wchar_t()); - s.resize(s.capacity()); - return s; - } -}; - -typedef int (*wide_printf)(wchar_t* __restrict, size_t, const wchar_t*__restrict, ...); - -inline -wide_printf -get_swprintf() -{ -#ifndef _LIBCPP_MSVCRT - return swprintf; -#else - return static_cast<int (__cdecl*)(wchar_t* __restrict, size_t, const wchar_t*__restrict, ...)>(_snwprintf); -#endif -} - -template <typename S, typename V> -S i_to_string(const V v) -{ -// numeric_limits::digits10 returns value less on 1 than desired for unsigned numbers. -// For example, for 1-byte unsigned value digits10 is 2 (999 can not be represented), -// so we need +1 here. - constexpr size_t bufsize = numeric_limits<V>::digits10 + 2; // +1 for minus, +1 for digits10 - char buf[bufsize]; - const auto res = to_chars(buf, buf + bufsize, v); - _LIBCPP_ASSERT(res.ec == errc(), "bufsize must be large enough to accomodate the value"); - return S(buf, res.ptr); -} - -} // unnamed namespace - -string to_string (int val) { return i_to_string< string>(val); } -string to_string (long val) { return i_to_string< string>(val); } -string to_string (long long val) { return i_to_string< string>(val); } -string to_string (unsigned val) { return i_to_string< string>(val); } -string to_string (unsigned long val) { return i_to_string< string>(val); } -string to_string (unsigned long long val) { return i_to_string< string>(val); } - -wstring to_wstring(int val) { return i_to_string<wstring>(val); } -wstring to_wstring(long val) { return i_to_string<wstring>(val); } -wstring to_wstring(long long val) { return i_to_string<wstring>(val); } -wstring to_wstring(unsigned val) { return i_to_string<wstring>(val); } -wstring to_wstring(unsigned long val) { return i_to_string<wstring>(val); } -wstring to_wstring(unsigned long long val) { return i_to_string<wstring>(val); } - - -string to_string (float val) { return as_string(snprintf, initial_string< string>()(), "%f", val); } -string to_string (double val) { return as_string(snprintf, initial_string< string>()(), "%f", val); } -string to_string (long double val) { return as_string(snprintf, initial_string< string>()(), "%Lf", val); } - -wstring to_wstring(float val) { return as_string(get_swprintf(), initial_string<wstring>()(), L"%f", val); } -wstring to_wstring(double val) { return as_string(get_swprintf(), initial_string<wstring>()(), L"%f", val); } -wstring to_wstring(long double val) { return as_string(get_swprintf(), initial_string<wstring>()(), L"%Lf", val); } - -_LIBCPP_END_NAMESPACE_STD |
