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Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/classic/core/scanner/skipper.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/classic/core/scanner/skipper.hpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/classic/core/scanner/skipper.hpp b/3rdParty/Boost/src/boost/spirit/home/classic/core/scanner/skipper.hpp new file mode 100644 index 0000000..4e655ae --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/classic/core/scanner/skipper.hpp @@ -0,0 +1,197 @@ +/*============================================================================= + Copyright (c) 1998-2003 Joel de Guzman + 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_SKIPPER_HPP) +#define BOOST_SPIRIT_SKIPPER_HPP + +/////////////////////////////////////////////////////////////////////////////// +#include <cctype> + +#include <boost/spirit/home/classic/namespace.hpp> +#include <boost/spirit/home/classic/core/scanner/scanner.hpp> +#include <boost/spirit/home/classic/core/primitives/impl/primitives.ipp> + +#include <boost/spirit/home/classic/core/scanner/skipper_fwd.hpp> + +namespace boost { namespace spirit { + +BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN + + /////////////////////////////////////////////////////////////////////////// + // + // skipper_iteration_policy class + // + /////////////////////////////////////////////////////////////////////////// + template <typename BaseT> + struct skipper_iteration_policy : public BaseT + { + typedef BaseT base_t; + + skipper_iteration_policy() + : BaseT() {} + + template <typename PolicyT> + skipper_iteration_policy(PolicyT const& other) + : BaseT(other) {} + + template <typename ScannerT> + void + advance(ScannerT const& scan) const + { + BaseT::advance(scan); + scan.skip(scan); + } + + template <typename ScannerT> + bool + at_end(ScannerT const& scan) const + { + scan.skip(scan); + return BaseT::at_end(scan); + } + + template <typename ScannerT> + void + skip(ScannerT const& scan) const + { + while (!BaseT::at_end(scan) && impl::isspace_(BaseT::get(scan))) + BaseT::advance(scan); + } + }; + + /////////////////////////////////////////////////////////////////////////// + // + // no_skipper_iteration_policy class + // + /////////////////////////////////////////////////////////////////////////// + template <typename BaseT> + struct no_skipper_iteration_policy : public BaseT + { + typedef BaseT base_t; + + no_skipper_iteration_policy() + : BaseT() {} + + template <typename PolicyT> + no_skipper_iteration_policy(PolicyT const& other) + : BaseT(other) {} + + template <typename ScannerT> + void + skip(ScannerT const& /*scan*/) const {} + }; + + /////////////////////////////////////////////////////////////////////////// + // + // skip_parser_iteration_policy class + // + /////////////////////////////////////////////////////////////////////////// + namespace impl + { + template <typename ST, typename ScannerT, typename BaseT> + void + skipper_skip( + ST const& s, + ScannerT const& scan, + skipper_iteration_policy<BaseT> const&); + + template <typename ST, typename ScannerT, typename BaseT> + void + skipper_skip( + ST const& s, + ScannerT const& scan, + no_skipper_iteration_policy<BaseT> const&); + + template <typename ST, typename ScannerT> + void + skipper_skip( + ST const& s, + ScannerT const& scan, + iteration_policy const&); + } + + template <typename ParserT, typename BaseT> + class skip_parser_iteration_policy : public skipper_iteration_policy<BaseT> + { + public: + + typedef skipper_iteration_policy<BaseT> base_t; + + skip_parser_iteration_policy( + ParserT const& skip_parser, + base_t const& base = base_t()) + : base_t(base), subject(skip_parser) {} + + template <typename PolicyT> + skip_parser_iteration_policy(PolicyT const& other) + : base_t(other), subject(other.skipper()) {} + + template <typename ScannerT> + void + skip(ScannerT const& scan) const + { + impl::skipper_skip(subject, scan, scan); + } + + ParserT const& + skipper() const + { + return subject; + } + + private: + + ParserT const& subject; + }; + + /////////////////////////////////////////////////////////////////////////////// + // + // Free parse functions using the skippers + // + /////////////////////////////////////////////////////////////////////////////// + template <typename IteratorT, typename ParserT, typename SkipT> + parse_info<IteratorT> + parse( + IteratorT const& first, + IteratorT const& last, + parser<ParserT> const& p, + parser<SkipT> const& skip); + + /////////////////////////////////////////////////////////////////////////////// + // + // Parse function for null terminated strings using the skippers + // + /////////////////////////////////////////////////////////////////////////////// + template <typename CharT, typename ParserT, typename SkipT> + parse_info<CharT const*> + parse( + CharT const* str, + parser<ParserT> const& p, + parser<SkipT> const& skip); + + /////////////////////////////////////////////////////////////////////////////// + // + // phrase_scanner_t and wide_phrase_scanner_t + // + // The most common scanners. Use these typedefs when you need + // a scanner that skips white spaces. + // + /////////////////////////////////////////////////////////////////////////////// + typedef skipper_iteration_policy<> iter_policy_t; + typedef scanner_policies<iter_policy_t> scanner_policies_t; + typedef scanner<char const*, scanner_policies_t> phrase_scanner_t; + typedef scanner<wchar_t const*, scanner_policies_t> wide_phrase_scanner_t; + + /////////////////////////////////////////////////////////////////////////////// + +BOOST_SPIRIT_CLASSIC_NAMESPACE_END + +}} // namespace BOOST_SPIRIT_CLASSIC_NS + +#include <boost/spirit/home/classic/core/scanner/impl/skipper.ipp> +#endif + |