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// Components for manipulating non-owning sequences of characters -*- C++ -*-
// Note: This file has been stolen from the gcc repo
// (libstdc++-v3/include/experimental/bits/string_view.tcc) and has local
// modifications.
// Copyright (C) 2013-2021 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 experimental/bits/string_view.tcc
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{experimental/string_view}
*/
//
// N3762 basic_string_view library
//
#ifndef GDB_STRING_VIEW_TCC
#define GDB_STRING_VIEW_TCC 1
namespace gdb
{
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
{
gdb_assert (__str != nullptr || __n == 0);
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
{
gdb_assert (__str != nullptr || __n == 0);
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
{
gdb_assert (__str != nullptr || __n == 0);
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
{
gdb_assert (__str != nullptr || __n == 0);
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
{
gdb_assert (__str != nullptr || __n == 0);
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
{
gdb_assert (__str != nullptr || __n == 0);
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;
}
} // namespace gdb
#endif // GDB_STRING_VIEW_TCC
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