You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
101 lines
2.6 KiB
101 lines
2.6 KiB
///////////////////////////////////////////////////////////////////////////////
|
|
// set.hpp
|
|
//
|
|
// Copyright 2008 Eric Niebler. Distributed under the Boost
|
|
// Software License, Version 1.0. (See accompanying file
|
|
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
#ifndef BOOST_XPRESSIVE_DETAIL_SET_HPP_EAN_10_04_2005
|
|
#define BOOST_XPRESSIVE_DETAIL_SET_HPP_EAN_10_04_2005
|
|
|
|
// MS compatible compilers support #pragma once
|
|
#if defined(_MSC_VER)
|
|
# pragma once
|
|
# pragma warning(push)
|
|
# pragma warning(disable : 4127) // conditional expression constant
|
|
# pragma warning(disable : 4100) // unreferenced formal parameter
|
|
# pragma warning(disable : 4351) // vc8 new behavior: elements of array 'foo' will be default initialized
|
|
#endif
|
|
|
|
#include <algorithm>
|
|
#include <boost/mpl/assert.hpp>
|
|
#include <boost/type_traits/same_traits.hpp>
|
|
#include <boost/xpressive/detail/detail_fwd.hpp>
|
|
#include <boost/xpressive/detail/core/quant_style.hpp>
|
|
#include <boost/xpressive/detail/core/state.hpp>
|
|
|
|
namespace boost { namespace xpressive { namespace detail
|
|
{
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// set_matcher
|
|
//
|
|
template<typename Traits, typename Size>
|
|
struct set_matcher
|
|
: quant_style_fixed_width<1>
|
|
{
|
|
typedef typename Traits::char_type char_type;
|
|
char_type set_[ Size::value ];
|
|
bool not_;
|
|
bool icase_;
|
|
|
|
set_matcher()
|
|
: set_()
|
|
, not_(false)
|
|
, icase_(false)
|
|
{
|
|
}
|
|
|
|
void inverse()
|
|
{
|
|
this->not_ = !this->not_;
|
|
}
|
|
|
|
void nocase(Traits const &tr)
|
|
{
|
|
this->icase_ = true;
|
|
|
|
for(int i = 0; i < Size::value; ++i)
|
|
{
|
|
this->set_[i] = tr.translate_nocase(this->set_[i]);
|
|
}
|
|
}
|
|
|
|
bool in_set(Traits const &tr, char_type ch) const
|
|
{
|
|
char_type const *begin = &this->set_[0], *end = begin + Size::value;
|
|
ch = this->icase_ ? tr.translate_nocase(ch) : tr.translate(ch);
|
|
return end != std::find(begin, end, ch);
|
|
}
|
|
|
|
template<typename BidiIter, typename Next>
|
|
bool match(match_state<BidiIter> &state, Next const &next) const
|
|
{
|
|
if(state.eos() || this->not_ == this->in_set(traits_cast<Traits>(state), *state.cur_))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if(++state.cur_, next.match(state))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
return --state.cur_, false;
|
|
}
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// set_initializer
|
|
struct set_initializer
|
|
{
|
|
};
|
|
|
|
#if defined(_MSC_VER)
|
|
# pragma warning(pop)
|
|
#endif
|
|
|
|
}}} // namespace boost::xpressive::detail
|
|
|
|
#endif
|