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Merge review changes with master

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* Initial constexpr support

* Remove invisible unicode

* Fix const function qualification

* Working constexpr
This commit is contained in:
Krystian Stasiowski
2019-12-16 00:51:47 -05:00
committed by GitHub
parent aa0fad2304
commit c3110b1b6c
5 changed files with 2948 additions and 2295 deletions
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53
include/boost/fixed_string/config.hpp
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@ -12,7 +12,7 @@
#define BOOST_FIXED_STRING_CONFIG_HPP
// Are we dependent on Boost?
#define BOOST_FIXED_STRING_USE_BOOST
// #define BOOST_FIXED_STRING_STANDALONE
// Can we have deduction guides?
#ifdef __cpp_deduction_guides
@ -30,8 +30,45 @@
#define BOOST_FIXED_STRING_NODISCARD
#endif
#ifdef BOOST_FIXED_STRING_USE_BOOST
//#undef _<>_<EFBFBD>cplusplus
//#define _<>_<EFBFBD>cplusplus 201703L
#if __cplusplus > 201703L
#define BOOST_FIXED_STRING_CPP20_CXPER constexpr
#define BOOST_FIXED_STRING_CPP17_CXPER constexpr
#define BOOST_FIXED_STRING_CPP14_CXPER constexpr
#define BOOST_FIXED_STRING_CPP11_CXPER constexpr
#define BOOST_FIXED_STRING_CPP20_CXPER_USED
#define BOOST_FIXED_STRING_CPP17_CXPER_USED
#define BOOST_FIXED_STRING_CPP14_CXPER_USED
#define BOOST_FIXED_STRING_CPP11_CXPER_USED
#define BOOST_FIXED_STRING_ALLOW_UNINIT_MEM
#elif __cplusplus >= 201703L
#define BOOST_FIXED_STRING_CPP20_CXPER
#define BOOST_FIXED_STRING_CPP17_CXPER constexpr
#define BOOST_FIXED_STRING_CPP14_CXPER constexpr
#define BOOST_FIXED_STRING_CPP11_CXPER constexpr
#define BOOST_FIXED_STRING_CPP17_CXPER_USED
#define BOOST_FIXED_STRING_CPP14_CXPER_USED
#define BOOST_FIXED_STRING_CPP11_CXPER_USED
#elif __cplusplus >= 201402L
#define BOOST_FIXED_STRING_CPP20_CXPER
#define BOOST_FIXED_STRING_CPP17_CXPER
#define BOOST_FIXED_STRING_CPP14_CXPER constexpr
#define BOOST_FIXED_STRING_CPP11_CXPER constexpr
#define BOOST_FIXED_STRING_CPP14_CXPER_USED
#define BOOST_FIXED_STRING_CPP11_CXPER_USED
#else
#define BOOST_FIXED_STRING_CPP20_CXPER
#define BOOST_FIXED_STRING_CPP17_CXPER
#define BOOST_FIXED_STRING_CPP14_CXPER
#define BOOST_FIXED_STRING_CPP11_CXPER constexpr
#define BOOST_FIXED_STRING_CPP11_CXPER_USED
#endif
#ifndef BOOST_FIXED_STRING_STANDALONE
#include <boost/utility/string_view.hpp>
#include <boost/container_hash/hash.hpp>
#include <boost/assert.hpp>
#include <boost/static_assert.hpp>
#include <boost/throw_exception.hpp>
@ -41,7 +78,7 @@
#endif
// Boost and non-Boost versions of utilities
#ifdef BOOST_FIXED_STRING_USE_BOOST
#ifndef BOOST_FIXED_STRING_STANDALONE
#ifndef BOOST_FIXED_STRING_THROW
#define BOOST_FIXED_STRING_THROW(ex) BOOST_THROW_EXCEPTION(ex)
#endif
@ -66,18 +103,10 @@
namespace boost {
namespace fixed_string {
/// The type of `string_view` used by the library
using string_view =
#ifdef BOOST_FIXED_STRING_USE_BOOST
boost::string_view;
#else
std::string_view;
#endif
/// The type of `basic_string_view` used by the library
template<typename CharT, typename Traits>
using basic_string_view =
#ifdef BOOST_FIXED_STRING_USE_BOOST
#ifndef BOOST_FIXED_STRING_STANDALONE
boost::basic_string_view<CharT, Traits>;
#else
std::basic_string_view<CharT, Traits>;

177
include/boost/fixed_string/detail/fixed_string.hpp
View File

@ -14,6 +14,7 @@
#include <boost/fixed_string/config.hpp>
#include <iterator>
#include <type_traits>
#include <limits>
namespace boost {
namespace fixed_string {
@ -22,12 +23,186 @@ namespace detail {
template<std::size_t, typename, typename>
class fixed_string;
// Because k-ballo said so
// At minimum an integral type shall not qualify as an iterator (Agustin Berge)
template<class T>
using is_input_iterator =
std::integral_constant<bool,
! std::is_integral<T>::value>;
// Find the smallest width integral type that can hold a value as large as N (Glen Fernandes)
template<std::size_t N>
using smallest_width =
typename std::conditional<(N <= (std::numeric_limits<unsigned char>::max)()), unsigned char,
typename std::conditional<(N <= (std::numeric_limits<unsigned short>::max)()), unsigned short,
typename std::conditional<(N <= (std::numeric_limits<unsigned int>::max)()), unsigned int,
typename std::conditional<(N <= (std::numeric_limits<unsigned long>::max)()), unsigned long,
typename std::conditional<(N <= (std::numeric_limits<unsigned long long>::max)()), unsigned long long,
void>::type>::type>::type>::type>::type;
// Optimization for using the smallest possible type
template<std::size_t N, typename CharT, typename Traits>
class fixed_string_base_zero
{
public:
BOOST_FIXED_STRING_CPP11_CXPER
fixed_string_base_zero() noexcept { };
BOOST_FIXED_STRING_CPP11_CXPER
fixed_string_base_zero(std::size_t n) noexcept : size_(n) { }
BOOST_FIXED_STRING_CPP14_CXPER
CharT*
data_impl() noexcept
{
return data_;
}
BOOST_FIXED_STRING_CPP14_CXPER
CharT const*
data_impl() const noexcept
{
return data_;
}
BOOST_FIXED_STRING_CPP11_CXPER
std::size_t
size_impl() const noexcept
{
return size_;
}
BOOST_FIXED_STRING_CPP14_CXPER
std::size_t
set_size(std::size_t n) noexcept
{
return size_ = n;
}
BOOST_FIXED_STRING_CPP14_CXPER
void
term_impl() noexcept
{
Traits::assign(data_[size_], 0);
}
smallest_width<N> size_{0};
#ifdef BOOST_FIXED_STRING_ALLOW_UNINIT_MEM
CharT data_[N + 1];
#else
CharT data_[N + 1]{};
#endif
};
// Optimization for when the size is 0
template<typename CharT, typename Traits>
class fixed_string_base_zero<0, CharT, Traits>
{
public:
BOOST_FIXED_STRING_CPP11_CXPER
fixed_string_base_zero() noexcept { }
BOOST_FIXED_STRING_CPP11_CXPER
fixed_string_base_zero(std::size_t) noexcept { }
// not possible to constexpr with the static there
CharT*
data_impl() const noexcept
{
static CharT null{};
return &null;
}
BOOST_FIXED_STRING_CPP11_CXPER
std::size_t
size_impl() const noexcept
{
return 0;
}
BOOST_FIXED_STRING_CPP11_CXPER
std::size_t
set_size(std::size_t) noexcept
{
return 0;
}
BOOST_FIXED_STRING_CPP14_CXPER
void
term_impl() noexcept
{
}
};
// Optimization for storing the size in the last element
template<std::size_t N, typename CharT, typename Traits>
class fixed_string_base_null
{
public:
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string_base_null() noexcept { set_size(0); }
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string_base_null(std::size_t n) noexcept { set_size(n); }
BOOST_FIXED_STRING_CPP14_CXPER
CharT*
data_impl() noexcept
{
return data_;
}
BOOST_FIXED_STRING_CPP14_CXPER
CharT const*
data_impl() const noexcept
{
return data_;
}
BOOST_FIXED_STRING_CPP11_CXPER
std::size_t
size_impl() const noexcept
{
return N - data_[N];
}
BOOST_FIXED_STRING_CPP14_CXPER
std::size_t
set_size(std::size_t n) noexcept
{
return data_[N] = (N - n);
}
BOOST_FIXED_STRING_CPP14_CXPER
void
term_impl() noexcept
{
Traits::assign(data_[size_impl()], 0);
}
#ifdef BOOST_FIXED_STRING_ALLOW_UNINIT_MEM
CharT data_[N + 1];
#else
CharT data_[N + 1]{};
#endif
};
//#define BOOST_FIXED_STRING_NO_NULL_OPTIMIZATION
// Decides which size optimization to use
// If the size is zero, the object will have no members
// Otherwise, if CharT can hold the max size of the string, store the size in the last char
// Otherwise, store the size of the string using a member of the smallest type possible
template<std::size_t N, typename CharT, typename Traits>
using optimization_base =
#ifndef BOOST_FIXED_STRING_NO_NULL_OPTIMIZATION
typename std::conditional<(N <= (std::numeric_limits<CharT>::max)()) && (N != 0),
fixed_string_base_null<N, CharT, Traits>,
fixed_string_base_zero<N, CharT, Traits>>::type;
#else
fixed_string_base_zero<N, CharT, Traits>;
#endif
template<typename CharT, typename Traits>
inline
int

362
include/boost/fixed_string/fixed_string.hpp
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File diff suppressed because it is too large Load Diff

422
include/boost/fixed_string/impl/fixed_string.hpp
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@ -24,14 +24,17 @@ namespace fixed_string {
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP11_CXPER
fixed_string<N, CharT, Traits>::
fixed_string()
fixed_string() noexcept
{
n_ = 0;
#ifdef BOOST_FIXED_STRING_CPP20_CXPER_USED
term();
#endif
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(size_type count, CharT ch)
{
@ -40,6 +43,7 @@ fixed_string(size_type count, CharT ch)
template<std::size_t N, typename CharT, typename Traits>
template<std::size_t M>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(fixed_string<M, CharT, Traits> const& other,
size_type pos)
@ -49,6 +53,7 @@ fixed_string(fixed_string<M, CharT, Traits> const& other,
template<std::size_t N, typename CharT, typename Traits>
template<std::size_t M>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(
fixed_string<M, CharT, Traits> const& other,
@ -59,6 +64,7 @@ fixed_string(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(CharT const* s, size_type count)
{
@ -66,6 +72,7 @@ fixed_string(CharT const* s, size_type count)
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(CharT const* s)
{
@ -73,12 +80,13 @@ fixed_string(CharT const* s)
if(count > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"count > max_size()"});
n_ = count;
Traits::copy(s_, s, n_ + 1);
this->set_size(count);
Traits::copy(data(), s, size() + 1);
}
template<std::size_t N, typename CharT, typename Traits>
template<class InputIterator>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(
InputIterator first,
@ -91,15 +99,17 @@ fixed_string(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(
fixed_string const& s)
fixed_string const& s) noexcept
{
assign(s);
}
template<std::size_t N, typename CharT, typename Traits>
template<std::size_t M>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(
fixed_string<M, CharT, Traits> const& s)
@ -108,6 +118,7 @@ fixed_string(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(std::initializer_list<CharT> init)
{
@ -115,6 +126,7 @@ fixed_string(std::initializer_list<CharT> init)
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(string_view_type sv)
{
@ -123,6 +135,7 @@ fixed_string(string_view_type sv)
template<std::size_t N, typename CharT, typename Traits>
template<class T, class>
BOOST_FIXED_STRING_CPP14_CXPER
fixed_string<N, CharT, Traits>::
fixed_string(T const& t, size_type pos, size_type n)
{
@ -136,6 +149,7 @@ fixed_string(T const& t, size_type pos, size_type n)
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign(
@ -146,13 +160,14 @@ assign(
if(count > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"count > max_size()"});
n_ = count;
Traits::assign(s_, n_, ch);
this->set_size(count);
Traits::assign(data(), size(), ch);
term();
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign(
@ -161,16 +176,17 @@ assign(
{
if(this == &s)
return *this;
n_ = s.n_;
auto const n = n_ + 1;
this->set_size(s.size());
auto const n = size() + 1;
// VFALCO This informs the static analyzer
//BOOST_BEAST_ASSUME(n != 0);
Traits::copy(s_, &s.s_[0], n);
Traits::copy(data(), &s.data()[0], n);
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
template<std::size_t M>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign(
@ -179,11 +195,12 @@ assign(
size_type count) ->
fixed_string&
{
auto const ss = s.substr(pos, count);
auto const ss = s.subview(pos, count);
return assign(ss.data(), ss.size());
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign(
@ -194,18 +211,15 @@ assign(
if(count > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"count > max_size()"});
n_ = count;
// check for overlap, then move if needed
if (s <= &s_[size()] && s >= s_)
Traits::move(s_, s, n_);
else
Traits::copy(s_, s, n_);
this->set_size(count);
Traits::move(data(), s, size());
term();
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
template<class InputIterator>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign(
@ -219,8 +233,8 @@ assign(
if(n > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"n > max_size()"});
n_ = n;
for(auto it = s_; first != last; ++it, ++first)
this->set_size(n);
for(auto it = data(); first != last; ++it, ++first)
Traits::assign(*it, *first);
term();
return *this;
@ -233,6 +247,7 @@ assign(
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
at(size_type pos) ->
@ -241,10 +256,11 @@ at(size_type pos) ->
if(pos >= size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos >= size()"});
return s_[pos];
return data()[pos];
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
at(size_type pos) const ->
@ -253,7 +269,7 @@ at(size_type pos) const ->
if(pos >= size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos >= size()"});
return s_[pos];
return data()[pos];
}
//------------------------------------------------------------------------------
@ -263,6 +279,7 @@ at(size_type pos) const ->
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
reserve(std::size_t n)
@ -279,17 +296,19 @@ reserve(std::size_t n)
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
clear()
clear() noexcept
{
n_ = 0;
this->set_size(0);
term();
}
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -306,6 +325,7 @@ insert(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -314,38 +334,41 @@ insert(
size_type count) ->
fixed_string&
{
if(index > size())
const auto curr_size = size();
const auto curr_data = data();
if(index > curr_size)
BOOST_FIXED_STRING_THROW(std::out_of_range{
"index > size()"});
if(size() + count > max_size())
if(count > max_size() - curr_size)
BOOST_FIXED_STRING_THROW(std::length_error{
"size() + count > max_size()"});
const bool inside = s <= &s_[size()] && s >= s_;
if (!inside || (inside && ((s - s_) + count <= index)))
const bool inside = s <= &curr_data[curr_size] && s >= curr_data;
if (!inside || (inside && ((s - curr_data) + count <= index)))
{
Traits::move(&s_[index + count], &s_[index], size() - index + 1);
Traits::copy(&s_[index], s, count);
Traits::move(&curr_data[index + count], &curr_data[index], curr_size - index + 1);
Traits::copy(&curr_data[index], s, count);
}
else
{
const size_type offset = s - s_;
Traits::move(&s_[index + count], &s_[index], size() - index + 1);
const size_type offset = s - curr_data;
Traits::move(&curr_data[index + count], &curr_data[index], curr_size - index + 1);
if (offset < index)
{
const size_type diff = index - offset;
Traits::copy(&s_[index], &s_[offset], diff);
Traits::copy(&s_[index + diff], &s_[index + count], count - diff);
Traits::copy(&curr_data[index], &curr_data[offset], diff);
Traits::copy(&curr_data[index + diff], &curr_data[index + count], count - diff);
}
else
{
Traits::copy(&s_[index], &s_[offset + count], count);
Traits::copy(&curr_data[index], &curr_data[offset + count], count);
}
}
n_ += count;
this->set_size(curr_size + count);
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -354,20 +377,22 @@ insert(
CharT ch) ->
iterator
{
if(size() + count > max_size())
const auto curr_size = size();
const auto curr_data = data();
if(count > max_size() - curr_size)
BOOST_FIXED_STRING_THROW(std::length_error{
"size() + count() > max_size()"});
auto const index = pos - s_;
Traits::move(
&s_[index + count], &s_[index], size() - index);
n_ += count;
Traits::assign(&s_[index], count, ch);
auto const index = pos - curr_data;
Traits::move(&curr_data[index + count], &curr_data[index], curr_size - index);
this->set_size(curr_size + count);
Traits::assign(&curr_data[index], count, ch);
term();
return &s_[index];
return &curr_data[index];
}
template<std::size_t N, typename CharT, typename Traits>
template<class InputIterator>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -384,6 +409,7 @@ insert(
template<std::size_t N, typename CharT, typename Traits>
template<class T>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -401,6 +427,7 @@ insert(
template<std::size_t N, typename CharT, typename Traits>
template<class T>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
insert(
@ -423,6 +450,7 @@ insert(
//------------------------------------------------------------------------------
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
erase(
@ -430,17 +458,19 @@ erase(
size_type count) ->
fixed_string&
{
if(index > size())
const auto curr_size = size();
const auto curr_data = data();
if(index > curr_size)
BOOST_FIXED_STRING_THROW(std::out_of_range{
"index > size()"});
auto const n = (std::min)(count, size() - index);
Traits::move(
&s_[index], &s_[index + n], size() - (index + n) + 1);
n_ -= n;
auto const n = (std::min)(count, curr_size - index);
Traits::move(&curr_data[index], &curr_data[index + n], curr_size - (index + n) + 1);
this->set_size(curr_size - n);
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
erase(
@ -452,6 +482,7 @@ erase(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
erase(
@ -465,19 +496,23 @@ erase(
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
push_back(
CharT ch)
{
if(size() >= max_size())
const auto curr_size = size();
if(curr_size >= max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"size() >= max_size()"});
Traits::assign(s_[n_++], ch);
Traits::assign(data()[curr_size], ch);
this->set_size(curr_size + 1);
term();
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
append(
@ -485,100 +520,123 @@ append(
size_type count) ->
fixed_string&
{
if(size() + count > max_size())
const auto curr_size = size();
if(count > max_size() - curr_size)
BOOST_FIXED_STRING_THROW(std::length_error{
"size() + count > max_size()"});
Traits::move(
&s_[n_ + count], &s_[n_], size() - n_);
Traits::copy(&s_[n_], s, count);
n_ += count;
Traits::copy(&data()[curr_size], s, count);
this->set_size(curr_size + count);
term();
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
substr(size_type pos, size_type count) const ->
string_view
fixed_string
{
if(pos > size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
return {&s_[pos], (std::min)(count, size() - pos)};
return {&data()[pos], (std::min)(count, size() - pos)};
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
copy(CharT* dest, size_type count, size_type pos) const ->
subview(size_type pos, size_type count) const ->
string_view_type
{
if (pos > size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
return {&data()[pos], (std::min)(count, size() - pos)};
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
copy(CharT* dest, size_type count, size_type pos) const noexcept ->
size_type
{
auto const s = substr(pos, count);
auto const s = subview(pos, count);
Traits::copy(dest, s.data(), s.size());
return s.size();
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
resize(std::size_t n)
{
const auto curr_size = size();
if(n > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"n > max_size()"});
if(n > n_)
Traits::assign(&s_[n_], n - n_, CharT{});
n_ = n;
if(n > curr_size)
Traits::assign(&data()[curr_size], n - curr_size, CharT{});
this->set_size(n);
term();
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
resize(std::size_t n, CharT c)
{
const auto curr_size = size();
if(n > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"n > max_size()"});
if(n > n_)
Traits::assign(&s_[n_], n - n_, c);
n_ = n;
if(n > curr_size)
Traits::assign(&data()[curr_size], n - curr_size, c);
this->set_size(n);
term();
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
swap(fixed_string& s)
swap(fixed_string& s) noexcept
{
const auto curr_size = size();
fixed_string tmp(s);
s.n_ = n_;
Traits::copy(&s.s_[0], s_, n_ + 1);
n_ = tmp.n_;
Traits::copy(s_, &tmp.s_[0], n_ + 1);
s.set_size(curr_size);
Traits::copy(&s.data()[0], data(), curr_size + 1);
this->set_size(tmp.size());
Traits::copy(data(), tmp.data(), size() + 1);
}
template<std::size_t N, typename CharT, typename Traits>
template<std::size_t M>
BOOST_FIXED_STRING_CPP14_CXPER
void
fixed_string<N, CharT, Traits>::
swap(fixed_string<M, CharT, Traits>& s)
{
if(size() > s.max_size())
const auto curr_size = size();
if(curr_size > s.max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"size() > s.max_size()"});
if(s.size() > max_size())
BOOST_FIXED_STRING_THROW(std::length_error{
"s.size() > max_size()"});
fixed_string tmp(s);
s.n_ = n_;
Traits::copy(&s.s_[0], s_, n_ + 1);
n_ = tmp.n_;
Traits::copy(s_, &tmp.s_[0], n_ + 1);
s.set_size(curr_size);
Traits::copy(&s.data()[0], data(), curr_size + 1);
this->set_size(tmp.size());
Traits::copy(data(), &tmp.data()[0], size() + 1);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
replace(
@ -587,52 +645,55 @@ replace(
const CharT* s,
size_type n2) -> fixed_string<N, CharT, Traits>&
{
if (pos > size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
if (size() - (std::min)(n1, size() - pos) >= max_size() - n2)
BOOST_FIXED_STRING_THROW(std::length_error{
"replaced string exceeds max_size()"});
if (pos + n1 >= size())
n1 = size() - pos;
const bool inside = s <= &s_[size()] && s >= s_;
if (inside && size_type(s - s_) == pos && n1 == n2)
return *this;
if (!inside || (inside && ((s - s_) + n2 <= pos)))
{
// source outside
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
Traits::copy(&s_[pos], s, n2);
}
else
{
// source inside
const size_type offset = s - s_;
if (n2 >= n1)
const auto curr_size = size();
const auto curr_data = data();
if (pos > curr_size)
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
if (curr_size - (std::min)(n1, curr_size - pos) >= max_size() - n2)
BOOST_FIXED_STRING_THROW(std::length_error{
"replaced string exceeds max_size()"});
if (pos + n1 >= curr_size)
n1 = curr_size - pos;
const bool inside = s <= &curr_data[curr_size] && s >= curr_data;
if (inside && size_type(s - curr_data) == pos && n1 == n2)
return *this;
if (!inside || (inside && ((s - curr_data) + n2 <= pos)))
{
// grow/unchanged
// shift all right of splice point by n2 - n1 to the right
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
const size_type diff = offset <= pos + n1 ? (std::min)((pos + n1) - offset, n2) : 0;
// copy all before splice point
Traits::move(&s_[pos], &s_[offset], diff);
// copy all after splice point
Traits::move(&s_[pos + diff], &s_[offset + (n2 - n1) + diff], n2 - diff);
// source outside
Traits::move(&curr_data[pos + n2], &curr_data[pos + n1], curr_size - pos - n1 + 1);
Traits::copy(&curr_data[pos], s, n2);
}
else
{
// shrink
// copy all elements into place
Traits::move(&s_[pos], &s_[offset], n2);
// shift all elements after splice point left
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
// source inside
const size_type offset = s - curr_data;
if (n2 >= n1)
{
// grow/unchanged
// shift all right of splice point by n2 - n1 to the right
Traits::move(&curr_data[pos + n2], &curr_data[pos + n1], curr_size - pos - n1 + 1);
const size_type diff = offset <= pos + n1 ? (std::min)((pos + n1) - offset, n2) : 0;
// copy all before splice point
Traits::move(&curr_data[pos], &curr_data[offset], diff);
// copy all after splice point
Traits::move(&curr_data[pos + diff], &curr_data[offset + (n2 - n1) + diff], n2 - diff);
}
else
{
// shrink
// copy all elements into place
Traits::move(&curr_data[pos], &curr_data[offset], n2);
// shift all elements after splice point left
Traits::move(&curr_data[pos + n2], &curr_data[pos + n1], curr_size - pos - n1 + 1);
}
}
}
n_ += (n2 - n1);
return *this;
this->set_size(curr_size + (n2 - n1));
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
replace(
@ -641,135 +702,150 @@ replace(
size_type n2,
CharT c) -> fixed_string<N, CharT, Traits> &
{
if (pos > size())
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
if (size() - (std::min)(n1, size() - pos) >= max_size() - n2)
BOOST_FIXED_STRING_THROW(std::length_error{
"replaced string exceeds max_size()"});
if (pos + n1 >= size())
n1 = size() - pos;
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
Traits::assign(&s_[pos], n2, c);
n_ += (n2 - n1);
return *this;
const auto curr_size = size();
const auto curr_data = data();
if (pos > curr_size)
BOOST_FIXED_STRING_THROW(std::out_of_range{
"pos > size()"});
if (curr_size - (std::min)(n1, curr_size - pos) >= max_size() - n2)
BOOST_FIXED_STRING_THROW(std::length_error{
"replaced string exceeds max_size()"});
if (pos + n1 >= curr_size)
n1 = curr_size - pos;
Traits::move(&curr_data[pos + n2], &curr_data[pos + n1], curr_size - pos - n1 + 1);
Traits::assign(&curr_data[pos], n2, c);
this->set_size(curr_size + (n2 - n1));
return *this;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
find(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (pos > n_ || n > n_ - pos)
return npos;
if (!n)
return pos;
const auto res = std::search(&s_[pos], &s_[n_], s, &s[n], Traits::eq);
return res == end() ? npos : std::distance(s_, res);
const auto curr_size = size();
if (pos > curr_size || n > curr_size - pos)
return npos;
if (!n)
return pos;
const auto res = std::search(&data()[pos], &data()[curr_size], s, &s[n], Traits::eq);
return res == end() ? npos : std::distance(data(), res);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
rfind(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (n_ < n)
const auto curr_size = size();
const auto curr_data = data();
if (curr_size < n)
return npos;
if (pos > curr_size - n)
pos = curr_size - n;
if (!n)
return pos;
for (auto sub = &curr_data[pos]; sub >= curr_data; --sub)
if (!Traits::compare(sub, s, n))
return std::distance(curr_data, sub);
return npos;
if (pos > n_ - n)
pos = n_ - n;
if (!n)
return pos;
for (auto sub = &s_[pos]; sub >= s_; --sub)
if (!Traits::compare(sub, s, n))
return std::distance(s_, sub);
return npos;
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
find_first_of(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (pos >= n_ || !n)
return npos;
const auto res = std::find_first_of(&s_[pos], &s_[n_], s, &s[n], Traits::eq);
return res == end() ? npos : std::distance(s_, res);
const auto curr_data = data();
if (pos >= size() || !n)
return npos;
const auto res = std::find_first_of(&curr_data[pos], &curr_data[size()], s, &s[n], Traits::eq);
return res == end() ? npos : std::distance(curr_data, res);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
find_last_of(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (!n)
return npos;
if (pos >= n_)
pos = 0;
else
pos = n_ - (pos + 1);
const auto res = std::find_first_of(rbegin() + pos, rend(), s, &s[n], Traits::eq);
return res == rend() ? npos : n_ - 1 - std::distance(rbegin(), res);
const auto curr_size = size();
if (!n)
return npos;
if (pos >= curr_size)
pos = 0;
else
pos = curr_size - (pos + 1);
const auto res = std::find_first_of(rbegin() + pos, rend(), s, &s[n], Traits::eq);
return res == rend() ? npos : curr_size - 1 - std::distance(rbegin(), res);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
find_first_not_of(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (pos >= n_)
return npos;
if (!n)
return pos;
const auto res = detail::find_not_of<Traits>(&s_[pos], &s_[n_], s, n);
return res == end() ? npos : std::distance(s_, res);
if (pos >= size())
return npos;
if (!n)
return pos;
const auto res = detail::find_not_of<Traits>(&data()[pos], &data()[size()], s, n);
return res == end() ? npos : std::distance(data(), res);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
find_last_not_of(
const CharT* s,
size_type pos,
size_type n) const ->
size_type n) const noexcept ->
size_type
{
if (pos >= n_)
pos = n_ - 1;
if (!n)
return pos;
pos = n_ - (pos + 1);
const auto res = detail::find_not_of<Traits>(rbegin() + pos, rend(), s, n);
return res == rend() ? npos : n_ - 1 - std::distance(rbegin(), res);
const auto curr_size = size();
if (pos >= curr_size)
pos = curr_size - 1;
if (!n)
return pos;
pos = curr_size - (pos + 1);
const auto res = detail::find_not_of<Traits>(rbegin() + pos, rend(), s, n);
return res == rend() ? npos : curr_size - 1 - std::distance(rbegin(), res);
}
template<std::size_t N, typename CharT, typename Traits>
BOOST_FIXED_STRING_CPP14_CXPER
auto
fixed_string<N, CharT, Traits>::
assign_char(CharT ch, std::true_type) ->
assign_char(CharT ch, std::true_type) noexcept ->
fixed_string&
{
n_ = 1;
Traits::assign(s_[0], ch);
this->set_size(1);
Traits::assign(data()[0], ch);
term();
return *this;
}

4229
test/fixed_string.cpp
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