/*=============================================================================
    Copyright (c) 2001-2003 Joel de Guzman
    Copyright (c) 2001-2003 Daniel Nuffer
    http://spirit.sourceforge.net/

    Use, modification and distribution is subject to 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_SPIRIT_CHSET_IPP
#define BOOST_SPIRIT_CHSET_IPP

///////////////////////////////////////////////////////////////////////////////
#include <boost/limits.hpp>
#include <boost/spirit/utility/chset.hpp>

///////////////////////////////////////////////////////////////////////////////
namespace boost { namespace spirit {

///////////////////////////////////////////////////////////////////////////////
//
//  chset class
//
///////////////////////////////////////////////////////////////////////////////
namespace utility { namespace impl {
    template <typename CharT>
    inline void
    detach(boost::shared_ptr<basic_chset<CharT> >& ptr)
    {
        if (!ptr.unique())
            ptr = boost::shared_ptr<basic_chset<CharT> >
                (new basic_chset<CharT>(*ptr));
    }

    template <typename CharT>
    inline void
    detach_clear(boost::shared_ptr<basic_chset<CharT> >& ptr)
    {
        if (ptr.unique())
            ptr->clear();
        else
            ptr.reset(new basic_chset<CharT>());
    }

    template <typename CharT, typename CharT2>
    void construct_chset(boost::shared_ptr<basic_chset<CharT> >& ptr,
            CharT2 const* definition)
    {
        CharT2 ch = *definition++;
        while (ch)
        {
            CharT2 next = *definition++;
            if (next == '-')
            {
                next = *definition++;
                if (next == 0)
                {
                    ptr->set(ch);
                    ptr->set('-');
                    break;
                }
                ptr->set(ch, next);
            }
            else
            {
                ptr->set(ch);
            }
            ch = next;
        }
    }

    //////////////////////////////////

#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)

    template <typename CharT, typename FakeT>
    void chset_negated_set(boost::shared_ptr<basic_chset<CharT> > &ptr, chlit<CharT> const &ch,
            FakeT)
    {
        if(ch.ch != (std::numeric_limits<CharT>::min)()) {
            ptr->set((std::numeric_limits<CharT>::min)(), ch.ch - 1);
        }
        if(ch.ch != (std::numeric_limits<CharT>::max)()) {
            ptr->set(ch.ch + 1, (std::numeric_limits<CharT>::max)());
        }
    }
    
    template <typename CharT, typename FakeT>
    void chset_negated_set(boost::shared_ptr<basic_chset<CharT> > &ptr,
            spirit::range<CharT> const &rng, FakeT)
    {
        if(rng.first != (std::numeric_limits<CharT>::min)()) {
            ptr->set((std::numeric_limits<CharT>::min)(), rng.first - 1);
        }
        if(rng.last != (std::numeric_limits<CharT>::max)()) {
            ptr->set(rng.last + 1, (std::numeric_limits<CharT>::max)());
        }
    }

#endif // BOOST_WORKAROUND(BOOST_MSVC, < 1300)

//////////////////////////////////

}} // namespace utility::impl

template <typename CharT>
inline chset<CharT>::chset()
: ptr(new basic_chset<CharT>()) {}

template <typename CharT>
inline chset<CharT>::chset(chset const& arg_)
: ptr(new basic_chset<CharT>(*arg_.ptr)) {}

template <typename CharT>
inline chset<CharT>::chset(CharT arg_)
: ptr(new basic_chset<CharT>())
{ ptr->set(arg_); }

template <typename CharT>
inline chset<CharT>::chset(anychar_parser /*arg*/)
: ptr(new basic_chset<CharT>())
{
    ptr->set(
        (std::numeric_limits<CharT>::min)(),
        (std::numeric_limits<CharT>::max)()
    );
}

template <typename CharT>
inline chset<CharT>::chset(nothing_parser arg_)
: ptr(new basic_chset<CharT>()) {}

template <typename CharT>
inline chset<CharT>::chset(chlit<CharT> const& arg_)
: ptr(new basic_chset<CharT>())
{ ptr->set(arg_.ch); }

template <typename CharT>
inline chset<CharT>::chset(range<CharT> const& arg_)
: ptr(new basic_chset<CharT>())
{ ptr->set(arg_.first, arg_.last); }

#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline chset<CharT>::chset(negated_char_parser<chlit<CharT> > const& arg_)
: ptr(new basic_chset<CharT>())
{
    set(arg_);
}

template <typename CharT>
inline chset<CharT>::chset(negated_char_parser<range<CharT> > const& arg_)
: ptr(new basic_chset<CharT>())
{
    set(arg_);
}

#endif // !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline chset<CharT>::~chset() {}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(chset const& rhs)
{
    ptr = rhs.ptr;
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(CharT rhs)
{
    utility::impl::detach_clear(ptr);
    ptr->set(rhs);
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(anychar_parser rhs)
{
    utility::impl::detach_clear(ptr);
    ptr->set(
        (std::numeric_limits<CharT>::min)(),
        (std::numeric_limits<CharT>::max)()
    );
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(nothing_parser rhs)
{
    utility::impl::detach_clear(ptr);
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(chlit<CharT> const& rhs)
{
    utility::impl::detach_clear(ptr);
    ptr->set(rhs.ch);
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(range<CharT> const& rhs)
{
    utility::impl::detach_clear(ptr);
    ptr->set(rhs.first, rhs.last);
    return *this;
}

#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(negated_char_parser<chlit<CharT> > const& rhs)
{
    utility::impl::detach_clear(ptr);
    set(rhs);
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator=(negated_char_parser<range<CharT> > const& rhs)
{
    utility::impl::detach_clear(ptr);
    set(rhs);
    return *this;
}

#endif // !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline void
chset<CharT>::set(range<CharT> const& arg_)
{
    utility::impl::detach(ptr);
    ptr->set(arg_.first, arg_.last);
}

#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline void
chset<CharT>::set(negated_char_parser<chlit<CharT> > const& arg_)
{
    utility::impl::detach(ptr);
    
    if(arg_.positive.ch != (std::numeric_limits<CharT>::min)()) {
        ptr->set((std::numeric_limits<CharT>::min)(), arg_.positive.ch - 1);
    }
    if(arg_.positive.ch != (std::numeric_limits<CharT>::max)()) {
        ptr->set(arg_.positive.ch + 1, (std::numeric_limits<CharT>::max)());
    }
}

template <typename CharT>
inline void
chset<CharT>::set(negated_char_parser<range<CharT> > const& arg_)
{
    utility::impl::detach(ptr);
    
    if(arg_.positive.first != (std::numeric_limits<CharT>::min)()) {
        ptr->set((std::numeric_limits<CharT>::min)(), arg_.positive.first - 1);
    }
    if(arg_.positive.last != (std::numeric_limits<CharT>::max)()) {
        ptr->set(arg_.positive.last + 1, (std::numeric_limits<CharT>::max)());
    }
}

#endif // !BOOST_WORKAROUND(BOOST_MSVC, < 1300)

template <typename CharT>
inline void
chset<CharT>::clear(range<CharT> const& arg_)
{
    utility::impl::detach(ptr);
    ptr->clear(arg_.first, arg_.last);
}

template <typename CharT>
inline void
chset<CharT>::clear(negated_char_parser<range<CharT> > const& arg_)
{
    utility::impl::detach(ptr);

    if(arg_.positive.first != (std::numeric_limits<CharT>::min)()) {
        ptr->clear((std::numeric_limits<CharT>::min)(), arg_.positive.first - 1);
    }
    if(arg_.positive.last != (std::numeric_limits<CharT>::max)()) {
        ptr->clear(arg_.positive.last + 1, (std::numeric_limits<CharT>::max)());
    }
}

template <typename CharT>
inline bool
chset<CharT>::test(CharT ch) const
{ return ptr->test(ch); }

template <typename CharT>
inline chset<CharT>&
chset<CharT>::inverse()
{
    utility::impl::detach(ptr);
    ptr->inverse();
    return *this;
}

template <typename CharT>
inline void
chset<CharT>::swap(chset& x)
{ ptr.swap(x.ptr); }

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator|=(chset const& x)
{
    utility::impl::detach(ptr);
    *ptr |= *x.ptr;
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator&=(chset const& x)
{
    utility::impl::detach(ptr);
    *ptr &= *x.ptr;
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator-=(chset const& x)
{
    utility::impl::detach(ptr);
    *ptr -= *x.ptr;
    return *this;
}

template <typename CharT>
inline chset<CharT>&
chset<CharT>::operator^=(chset const& x)
{
    utility::impl::detach(ptr);
    *ptr ^= *x.ptr;
    return *this;
}

///////////////////////////////////////////////////////////////////////////////
}} // namespace boost::spirit

#endif