mirror of git://gcc.gnu.org/git/gcc.git
230 lines
6.5 KiB
C++
230 lines
6.5 KiB
C++
// Components for manipulating non-owning sequences of characters -*- C++ -*-
|
|
|
|
// Copyright (C) 2013-2018 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file include/bits/string_view.tcc
|
|
* This is an internal header file, included by other library headers.
|
|
* Do not attempt to use it directly. @headername{string_view}
|
|
*/
|
|
|
|
//
|
|
// N3762 basic_string_view library
|
|
//
|
|
|
|
#ifndef _GLIBCXX_STRING_VIEW_TCC
|
|
#define _GLIBCXX_STRING_VIEW_TCC 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#if __cplusplus >= 201703L
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find(const _CharT* __str, size_type __pos, size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
|
|
if (__n == 0)
|
|
return __pos <= this->_M_len ? __pos : npos;
|
|
|
|
if (__n <= this->_M_len)
|
|
{
|
|
for (; __pos <= this->_M_len - __n; ++__pos)
|
|
if (traits_type::eq(this->_M_str[__pos], __str[0])
|
|
&& traits_type::compare(this->_M_str + __pos + 1,
|
|
__str + 1, __n - 1) == 0)
|
|
return __pos;
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find(_CharT __c, size_type __pos) const noexcept
|
|
{
|
|
size_type __ret = npos;
|
|
if (__pos < this->_M_len)
|
|
{
|
|
const size_type __n = this->_M_len - __pos;
|
|
const _CharT* __p = traits_type::find(this->_M_str + __pos, __n, __c);
|
|
if (__p)
|
|
__ret = __p - this->_M_str;
|
|
}
|
|
return __ret;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
rfind(const _CharT* __str, size_type __pos, size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
|
|
if (__n <= this->_M_len)
|
|
{
|
|
__pos = std::min(size_type(this->_M_len - __n), __pos);
|
|
do
|
|
{
|
|
if (traits_type::compare(this->_M_str + __pos, __str, __n) == 0)
|
|
return __pos;
|
|
}
|
|
while (__pos-- > 0);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
rfind(_CharT __c, size_type __pos) const noexcept
|
|
{
|
|
size_type __size = this->_M_len;
|
|
if (__size > 0)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
for (++__size; __size-- > 0; )
|
|
if (traits_type::eq(this->_M_str[__size], __c))
|
|
return __size;
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_first_of(const _CharT* __str, size_type __pos,
|
|
size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
for (; __n && __pos < this->_M_len; ++__pos)
|
|
{
|
|
const _CharT* __p = traits_type::find(__str, __n,
|
|
this->_M_str[__pos]);
|
|
if (__p)
|
|
return __pos;
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_last_of(const _CharT* __str, size_type __pos,
|
|
size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
size_type __size = this->size();
|
|
if (__size && __n)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (traits_type::find(__str, __n, this->_M_str[__size]))
|
|
return __size;
|
|
}
|
|
while (__size-- != 0);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_first_not_of(const _CharT* __str, size_type __pos,
|
|
size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
for (; __pos < this->_M_len; ++__pos)
|
|
if (!traits_type::find(__str, __n, this->_M_str[__pos]))
|
|
return __pos;
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_first_not_of(_CharT __c, size_type __pos) const noexcept
|
|
{
|
|
for (; __pos < this->_M_len; ++__pos)
|
|
if (!traits_type::eq(this->_M_str[__pos], __c))
|
|
return __pos;
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_last_not_of(const _CharT* __str, size_type __pos,
|
|
size_type __n) const noexcept
|
|
{
|
|
__glibcxx_requires_string_len(__str, __n);
|
|
size_type __size = this->_M_len;
|
|
if (__size)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (!traits_type::find(__str, __n, this->_M_str[__size]))
|
|
return __size;
|
|
}
|
|
while (__size--);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
constexpr typename basic_string_view<_CharT, _Traits>::size_type
|
|
basic_string_view<_CharT, _Traits>::
|
|
find_last_not_of(_CharT __c, size_type __pos) const noexcept
|
|
{
|
|
size_type __size = this->_M_len;
|
|
if (__size)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (!traits_type::eq(this->_M_str[__size], __c))
|
|
return __size;
|
|
}
|
|
while (__size--);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif // __cplusplus <= 201402L
|
|
|
|
#endif // _GLIBCXX_STRING_VIEW_TCC
|