| /*============================================================================= |
| Copyright (c) 1998-2003 Joel de Guzman |
| Copyright (c) 2001 Daniel Nuffer |
| Copyright (c) 2002 Hartmut Kaiser |
| http://spirit.sourceforge.net/ |
| |
| 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) |
| =============================================================================*/ |
| #if !defined(BOOST_SPIRIT_SEQUENCE_HPP) |
| #define BOOST_SPIRIT_SEQUENCE_HPP |
| |
| #include <boost/spirit/home/classic/namespace.hpp> |
| #include <boost/spirit/home/classic/core/parser.hpp> |
| #include <boost/spirit/home/classic/core/primitives/primitives.hpp> |
| #include <boost/spirit/home/classic/core/composite/composite.hpp> |
| #include <boost/spirit/home/classic/meta/as_parser.hpp> |
| |
| namespace boost { namespace spirit { |
| |
| BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // |
| // sequence class |
| // |
| // Handles expressions of the form: |
| // |
| // a >> b |
| // |
| // where a and b are parsers. The expression returns a composite |
| // parser that matches a and b in sequence. One (not both) of the |
| // operands may be a literal char, wchar_t or a primitive string |
| // char const*, wchar_t const*. |
| // |
| ////////////////////////////////////////////////////////////////////////// |
| struct sequence_parser_gen; |
| |
| #if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) |
| #pragma warning(push) |
| #pragma warning(disable:4512) //assignment operator could not be generated |
| #endif |
| |
| template <typename A, typename B> |
| struct sequence : public binary<A, B, parser<sequence<A, B> > > |
| { |
| typedef sequence<A, B> self_t; |
| typedef binary_parser_category parser_category_t; |
| typedef sequence_parser_gen parser_generator_t; |
| typedef binary<A, B, parser<self_t> > base_t; |
| |
| sequence(A const& a, B const& b) |
| : base_t(a, b) {} |
| |
| template <typename ScannerT> |
| typename parser_result<self_t, ScannerT>::type |
| parse(ScannerT const& scan) const |
| { |
| typedef typename parser_result<self_t, ScannerT>::type result_t; |
| if (result_t ma = this->left().parse(scan)) |
| if (result_t mb = this->right().parse(scan)) |
| { |
| scan.concat_match(ma, mb); |
| return ma; |
| } |
| return scan.no_match(); |
| } |
| }; |
| |
| #if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) |
| #pragma warning(pop) |
| #endif |
| |
| struct sequence_parser_gen |
| { |
| template <typename A, typename B> |
| struct result |
| { |
| typedef |
| sequence< |
| typename as_parser<A>::type |
| , typename as_parser<B>::type |
| > |
| type; |
| }; |
| |
| template <typename A, typename B> |
| static sequence< |
| typename as_parser<A>::type |
| , typename as_parser<B>::type |
| > |
| generate(A const& a, B const& b) |
| { |
| return sequence<BOOST_DEDUCED_TYPENAME as_parser<A>::type, |
| BOOST_DEDUCED_TYPENAME as_parser<B>::type> |
| (as_parser<A>::convert(a), as_parser<B>::convert(b)); |
| } |
| }; |
| |
| template <typename A, typename B> |
| sequence<A, B> |
| operator>>(parser<A> const& a, parser<B> const& b); |
| |
| template <typename A> |
| sequence<A, chlit<char> > |
| operator>>(parser<A> const& a, char b); |
| |
| template <typename B> |
| sequence<chlit<char>, B> |
| operator>>(char a, parser<B> const& b); |
| |
| template <typename A> |
| sequence<A, strlit<char const*> > |
| operator>>(parser<A> const& a, char const* b); |
| |
| template <typename B> |
| sequence<strlit<char const*>, B> |
| operator>>(char const* a, parser<B> const& b); |
| |
| template <typename A> |
| sequence<A, chlit<wchar_t> > |
| operator>>(parser<A> const& a, wchar_t b); |
| |
| template <typename B> |
| sequence<chlit<wchar_t>, B> |
| operator>>(wchar_t a, parser<B> const& b); |
| |
| template <typename A> |
| sequence<A, strlit<wchar_t const*> > |
| operator>>(parser<A> const& a, wchar_t const* b); |
| |
| template <typename B> |
| sequence<strlit<wchar_t const*>, B> |
| operator>>(wchar_t const* a, parser<B> const& b); |
| |
| BOOST_SPIRIT_CLASSIC_NAMESPACE_END |
| |
| }} // namespace BOOST_SPIRIT_CLASSIC_NS |
| |
| #endif |
| |
| #include <boost/spirit/home/classic/core/composite/impl/sequence.ipp> |