105 lines
4.2 KiB
C++
105 lines
4.2 KiB
C++
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///////////////////////////////////////////////////////////////////////////////
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// compile.hpp
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//
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// Copyright 2008 Eric Niebler. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_XPRESSIVE_DETAIL_STATIC_COMPILE_HPP_EAN_10_04_2005
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#define BOOST_XPRESSIVE_DETAIL_STATIC_COMPILE_HPP_EAN_10_04_2005
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/mpl/bool.hpp>
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#include <boost/iterator/iterator_traits.hpp>
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#include <boost/proto/core.hpp>
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#include <boost/xpressive/regex_traits.hpp>
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#include <boost/xpressive/detail/core/regex_impl.hpp>
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#include <boost/xpressive/detail/core/linker.hpp>
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#include <boost/xpressive/detail/core/optimize.hpp>
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#include <boost/xpressive/detail/core/adaptor.hpp>
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#include <boost/xpressive/detail/core/matcher/end_matcher.hpp>
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#include <boost/xpressive/detail/static/static.hpp>
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#include <boost/xpressive/detail/static/visitor.hpp>
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#include <boost/xpressive/detail/static/grammar.hpp>
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namespace boost { namespace xpressive { namespace detail
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{
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///////////////////////////////////////////////////////////////////////////////
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// static_compile_impl2
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template<typename Xpr, typename BidiIter, typename Traits>
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void static_compile_impl2(Xpr const &xpr, shared_ptr<regex_impl<BidiIter> > const &impl, Traits const &tr)
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{
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typedef typename iterator_value<BidiIter>::type char_type;
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impl->tracking_clear();
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impl->traits_ = new traits_holder<Traits>(tr);
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// "compile" the regex and wrap it in an xpression_adaptor.
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typedef xpression_visitor<BidiIter, mpl::false_, Traits> visitor_type;
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visitor_type visitor(tr, impl);
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intrusive_ptr<matchable_ex<BidiIter> const> adxpr = make_adaptor<matchable_ex<BidiIter> >(
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typename Grammar<char_type>::template impl<Xpr const &, end_xpression, visitor_type &>()(
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xpr
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, end_xpression()
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, visitor
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)
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);
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// Link and optimize the regex
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common_compile(adxpr, *impl, visitor.traits());
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// References changed, update dependencies.
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impl->tracking_update();
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}
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///////////////////////////////////////////////////////////////////////////////
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// pattern for imbued regexes.
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struct XpressiveLocaleModifier
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: proto::binary_expr<
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modifier_tag
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, proto::terminal<locale_modifier<proto::_> >
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, proto::_
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>
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{};
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///////////////////////////////////////////////////////////////////////////////
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// static_compile_impl1
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template<typename Xpr, typename BidiIter>
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typename disable_if<proto::matches<Xpr, XpressiveLocaleModifier> >::type
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static_compile_impl1(Xpr const &xpr, shared_ptr<regex_impl<BidiIter> > const &impl)
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{
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// use default traits
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typedef typename iterator_value<BidiIter>::type char_type;
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typedef typename default_regex_traits<char_type>::type traits_type;
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traits_type tr;
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static_compile_impl2(xpr, impl, tr);
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}
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///////////////////////////////////////////////////////////////////////////////
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// static_compile_impl1
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template<typename Xpr, typename BidiIter>
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typename enable_if<proto::matches<Xpr, XpressiveLocaleModifier> >::type
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static_compile_impl1(Xpr const &xpr, shared_ptr<regex_impl<BidiIter> > const &impl)
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{
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// use specified traits
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typedef typename proto::result_of::value<typename proto::result_of::left<Xpr>::type>::type::locale_type locale_type;
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typedef typename regex_traits_type<locale_type, BidiIter>::type traits_type;
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static_compile_impl2(proto::right(xpr), impl, traits_type(proto::value(proto::left(xpr)).getloc()));
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}
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///////////////////////////////////////////////////////////////////////////////
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// static_compile
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template<typename Xpr, typename BidiIter>
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void static_compile(Xpr const &xpr, shared_ptr<regex_impl<BidiIter> > const &impl)
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{
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static_compile_impl1(xpr, impl);
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}
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}}} // namespace boost::xpressive::detail
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#endif
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