Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16:     Copyright (c) 2001-2011 Hartmut Kaiser
Chris@16:     Copyright (c)      2010 Bryce Lelbach
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_SPIRIT_LIT_APR_18_2006_1125PM)
Chris@16: #define BOOST_SPIRIT_LIT_APR_18_2006_1125PM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/spirit/home/qi/domain.hpp>
Chris@16: #include <boost/spirit/home/qi/skip_over.hpp>
Chris@16: #include <boost/spirit/home/qi/detail/string_parse.hpp>
Chris@16: #include <boost/spirit/home/qi/parser.hpp>
Chris@16: #include <boost/spirit/home/qi/meta_compiler.hpp>
Chris@16: #include <boost/spirit/home/qi/auxiliary/lazy.hpp>
Chris@16: #include <boost/spirit/home/qi/detail/enable_lit.hpp>
Chris@16: #include <boost/spirit/home/support/info.hpp>
Chris@16: #include <boost/spirit/home/support/char_class.hpp>
Chris@16: #include <boost/spirit/home/support/modify.hpp>
Chris@16: #include <boost/spirit/home/support/unused.hpp>
Chris@16: #include <boost/spirit/home/support/common_terminals.hpp>
Chris@16: #include <boost/spirit/home/support/string_traits.hpp>
Chris@16: #include <boost/spirit/home/support/detail/get_encoding.hpp>
Chris@16: #include <boost/spirit/home/support/handles_container.hpp>
Chris@16: #include <boost/fusion/include/at.hpp>
Chris@16: #include <boost/fusion/include/value_at.hpp>
Chris@16: #include <boost/type_traits/add_reference.hpp>
Chris@16: #include <boost/type_traits/add_const.hpp>
Chris@16: #include <boost/mpl/assert.hpp>
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: #include <boost/utility/enable_if.hpp>
Chris@16: #include <string>
Chris@16: 
Chris@16: namespace boost { namespace spirit
Chris@16: {
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // Enablers
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename T>
Chris@16:     struct use_terminal<qi::domain, T
Chris@16:       , typename enable_if<traits::is_string<T> >::type> // enables strings
Chris@16:       : mpl::true_ {};
Chris@16: 
Chris@16:     template <typename CharEncoding, typename A0>
Chris@16:     struct use_terminal<qi::domain
Chris@16:       , terminal_ex<
Chris@16:             tag::char_code<tag::string, CharEncoding>   // enables string(str)
Chris@16:           , fusion::vector1<A0> >
Chris@16:     > : traits::is_string<A0> {};
Chris@16: 
Chris@16:     template <typename CharEncoding>                    // enables string(f)
Chris@16:     struct use_lazy_terminal<
Chris@16:         qi::domain
Chris@16:       , tag::char_code<tag::string, CharEncoding>
Chris@16:       , 1 /*arity*/
Chris@16:     > : mpl::true_ {};
Chris@16: 
Chris@16:     // enables lit(...)
Chris@16:     template <typename A0>
Chris@16:     struct use_terminal<qi::domain
Chris@16:           , terminal_ex<tag::lit, fusion::vector1<A0> >
Chris@16:           , typename enable_if<traits::is_string<A0> >::type>
Chris@16:       : mpl::true_ {};
Chris@16: }}
Chris@16: 
Chris@16: namespace boost { namespace spirit { namespace qi
Chris@16: {
Chris@16: #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
Chris@16:     using spirit::lit;
Chris@16: #endif
Chris@16:     using spirit::lit_type;
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // Parse for literal strings
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename String, bool no_attribute>
Chris@16:     struct literal_string
Chris@16:       : primitive_parser<literal_string<String, no_attribute> >
Chris@16:     {
Chris@16:         typedef typename
Chris@16:             remove_const<typename traits::char_type_of<String>::type>::type
Chris@16:         char_type;
Chris@16:         typedef std::basic_string<char_type> string_type;
Chris@16: 
Chris@16:         literal_string(typename add_reference<String>::type str_)
Chris@16:           : str(str_)
Chris@16:         {}
Chris@16: 
Chris@16:         template <typename Context, typename Iterator>
Chris@16:         struct attribute
Chris@16:         {
Chris@16:             typedef typename mpl::if_c<
Chris@16:                 no_attribute, unused_type, string_type>::type
Chris@16:             type;
Chris@16:         };
Chris@16: 
Chris@16:         template <typename Iterator, typename Context
Chris@16:           , typename Skipper, typename Attribute>
Chris@16:         bool parse(Iterator& first, Iterator const& last
Chris@16:           , Context& /*context*/, Skipper const& skipper, Attribute& attr_) const
Chris@16:         {
Chris@16:             qi::skip_over(first, last, skipper);
Chris@16:             return detail::string_parse(str, first, last, attr_);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Context>
Chris@16:         info what(Context& /*context*/) const
Chris@16:         {
Chris@16:             return info("literal-string", str);
Chris@16:         }
Chris@16: 
Chris@16:         String str;
Chris@16: 
Chris@16:     private:
Chris@16:         // silence MSVC warning C4512: assignment operator could not be generated
Chris@16:         literal_string& operator= (literal_string const&);
Chris@16:     };
Chris@16: 
Chris@16:     template <typename String, bool no_attribute>
Chris@16:     struct no_case_literal_string
Chris@16:       : primitive_parser<no_case_literal_string<String, no_attribute> >
Chris@16:     {
Chris@16:         typedef typename
Chris@16:             remove_const<typename traits::char_type_of<String>::type>::type
Chris@16:         char_type;
Chris@16:         typedef std::basic_string<char_type> string_type;
Chris@16: 
Chris@16:         template <typename CharEncoding>
Chris@16:         no_case_literal_string(char_type const* in, CharEncoding encoding)
Chris@16:           : str_lo(in)
Chris@16:           , str_hi(in)
Chris@16:         {
Chris@16: #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600))
Chris@16:             encoding; // suppresses warning: C4100: 'encoding' : unreferenced formal parameter
Chris@16: #endif
Chris@16:             typename string_type::iterator loi = str_lo.begin();
Chris@16:             typename string_type::iterator hii = str_hi.begin();
Chris@16: 
Chris@16:             for (; loi != str_lo.end(); ++loi, ++hii, ++in)
Chris@16:             {
Chris@16:                 typedef typename CharEncoding::char_type encoded_char_type;
Chris@16: 
Chris@16:                 *loi = static_cast<char_type>(encoding.tolower(encoded_char_type(*loi)));
Chris@16:                 *hii = static_cast<char_type>(encoding.toupper(encoded_char_type(*hii)));
Chris@16:             }
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Context, typename Iterator>
Chris@16:         struct attribute
Chris@16:         {
Chris@16:             typedef typename mpl::if_c<
Chris@16:                 no_attribute, unused_type, string_type>::type
Chris@16:             type;
Chris@16:         };
Chris@16: 
Chris@16:         template <typename Iterator, typename Context
Chris@16:           , typename Skipper, typename Attribute>
Chris@16:         bool parse(Iterator& first, Iterator const& last
Chris@16:           , Context& /*context*/, Skipper const& skipper, Attribute& attr_) const
Chris@16:         {
Chris@16:             qi::skip_over(first, last, skipper);
Chris@16:             return detail::string_parse(str_lo, str_hi, first, last, attr_);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Context>
Chris@16:         info what(Context& /*context*/) const
Chris@16:         {
Chris@16:             return info("no-case-literal-string", str_lo);
Chris@16:         }
Chris@16: 
Chris@16:         string_type str_lo, str_hi;
Chris@16:     };
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // Parser generators: make_xxx function (objects)
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename T, typename Modifiers>
Chris@16:     struct make_primitive<T, Modifiers
Chris@16:       , typename enable_if<traits::is_string<T> >::type>
Chris@16:     {
Chris@16:         typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case;
Chris@16: 
Chris@16:         typedef typename add_const<T>::type const_string;
Chris@16:         typedef typename mpl::if_<
Chris@16:             no_case
Chris@16:           , no_case_literal_string<const_string, true>
Chris@16:           , literal_string<const_string, true> >::type
Chris@16:         result_type;
Chris@16: 
Chris@16:         result_type operator()(
Chris@16:             typename add_reference<const_string>::type str, unused_type) const
Chris@16:         {
Chris@16:             return op(str, no_case());
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::false_) const
Chris@16:         {
Chris@16:             return result_type(str);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::true_) const
Chris@16:         {
Chris@16:             typename spirit::detail::get_encoding<Modifiers,
Chris@16:                 spirit::char_encoding::standard>::type encoding;
Chris@16:             return result_type(traits::get_c_string(str), encoding);
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     // lit("...")
Chris@16:     template <typename Modifiers, typename A0>
Chris@16:     struct make_primitive<
Chris@16:         terminal_ex<tag::lit, fusion::vector1<A0> >
Chris@16:       , Modifiers
Chris@16:       , typename enable_if<traits::is_string<A0> >::type>
Chris@16:     {
Chris@16:         typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case;
Chris@16: 
Chris@16:         typedef typename add_const<A0>::type const_string;
Chris@16:         typedef typename mpl::if_<
Chris@16:             no_case
Chris@16:           , no_case_literal_string<const_string, true>
Chris@16:           , literal_string<const_string, true> >::type
Chris@16:         result_type;
Chris@16: 
Chris@16:         template <typename Terminal>
Chris@16:         result_type operator()(Terminal const& term, unused_type) const
Chris@16:         {
Chris@16:             return op(fusion::at_c<0>(term.args), no_case());
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::false_) const
Chris@16:         {
Chris@16:             return result_type(str);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::true_) const
Chris@16:         {
Chris@16:             typedef typename traits::char_encoding_from_char<
Chris@16:                 typename traits::char_type_of<A0>::type>::type encoding_type;
Chris@16:             typename spirit::detail::get_encoding<Modifiers,
Chris@16:                 encoding_type>::type encoding;
Chris@16:             return result_type(traits::get_c_string(str), encoding);
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // string("...")
Chris@16:     template <typename CharEncoding, typename Modifiers, typename A0>
Chris@16:     struct make_primitive<
Chris@16:         terminal_ex<
Chris@16:             tag::char_code<tag::string, CharEncoding>
Chris@16:           , fusion::vector1<A0> >
Chris@16:       , Modifiers>
Chris@16:     {
Chris@16:         typedef CharEncoding encoding;
Chris@16:         typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case;
Chris@16: 
Chris@16:         typedef typename add_const<A0>::type const_string;
Chris@16:         typedef typename mpl::if_<
Chris@16:             no_case
Chris@16:           , no_case_literal_string<const_string, false>
Chris@16:           , literal_string<const_string, false> >::type
Chris@16:         result_type;
Chris@16: 
Chris@16:         template <typename Terminal>
Chris@16:         result_type operator()(Terminal const& term, unused_type) const
Chris@16:         {
Chris@16:             return op(fusion::at_c<0>(term.args), no_case());
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::false_) const
Chris@16:         {
Chris@16:             return result_type(str);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename String>
Chris@16:         result_type op(String const& str, mpl::true_) const
Chris@16:         {
Chris@16:             return result_type(traits::get_c_string(str), encoding());
Chris@16:         }
Chris@16:     };
Chris@16: }}}
Chris@16: 
Chris@16: namespace boost { namespace spirit { namespace traits
Chris@16: {
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename String, bool no_attribute, typename Attribute
Chris@16:       ,typename Context, typename Iterator>
Chris@16:     struct handles_container<qi::literal_string<String, no_attribute>
Chris@16:       , Attribute, Context, Iterator>
Chris@16:       : mpl::true_ {};
Chris@16: 
Chris@16:     template <typename String, bool no_attribute, typename Attribute
Chris@16:       , typename Context, typename Iterator>
Chris@16:     struct handles_container<qi::no_case_literal_string<String, no_attribute>
Chris@16:       , Attribute, Context, Iterator>
Chris@16:       : mpl::true_ {};
Chris@16: }}}
Chris@16: 
Chris@16: #endif