/*============================================================================= Copyright (c) 2001-2011 Joel de Guzman Copyright (c) 2011 Thomas Bernard 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(SPIRIT_KWD_NOVEMBER_14_2008_1148AM) #define SPIRIT_KWD_NOVEMBER_14_2008_1148AM #if defined(_MSC_VER) #pragma once #endif #include #include #include #include #include #include #include #include #include #include #include #include #if defined(_MSC_VER) # pragma warning(push) # pragma warning(disable: 4127) // conditional expression is constant #endif namespace boost { namespace spirit { /////////////////////////////////////////////////////////////////////////// // Enablers /////////////////////////////////////////////////////////////////////////// template < typename T> struct use_directive > > : mpl::true_ {}; template < typename T> struct use_directive > > : mpl::true_ {}; template < typename T> struct use_directive > > : mpl::true_ {}; template < typename T> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; template < typename T1, typename T2> struct use_directive > > : mpl::true_ {}; /* template <> // enables *lazy* kwd(exact)[p] struct use_lazy_directive< qi::domain , tag::kwd , 1 // arity > : mpl::true_ {}; template <> // enables *lazy* kwd(min, max)[p] struct use_lazy_directive< // and kwd(min, inf)[p] qi::domain , tag::kwd , 2 // arity > : mpl::true_ {}; */ }} namespace boost { namespace spirit { namespace repository { namespace qi { #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS using repository::kwd; using repository::ikwd; using repository::dkwd; using repository::idkwd; using spirit::inf; #endif using repository::kwd_type; using repository::ikwd_type; using repository::dkwd_type; using repository::idkwd_type; using spirit::inf_type; template struct kwd_pass_iterator // handles kwd(exact)[p] { kwd_pass_iterator() {} bool flag_init() const { return true; } bool register_successful_parse(bool &flag,T &/*i*/) const { flag=true; return true; } // silence MSVC warning C4512: assignment operator could not be generated BOOST_DELETED_FUNCTION(kwd_pass_iterator& operator= (kwd_pass_iterator const&)) }; template struct kwd_exact_iterator // handles kwd(exact)[p] { kwd_exact_iterator(T const exact) : exact(exact){} typedef T type; bool flag_init() const { return false; } bool register_successful_parse(bool &flag,T &i) const { i++; if(i struct kwd_finite_iterator // handles kwd(min, max)[p] { kwd_finite_iterator(T const min, T const max) : min BOOST_PREVENT_MACRO_SUBSTITUTION (min) , max BOOST_PREVENT_MACRO_SUBSTITUTION (max) {} typedef T type; bool flag_init() const { return min==0; } bool register_successful_parse(bool &flag,T &i) const { i++; if(i=min && i<=max) { return flag=true; } else return flag=false; } T const min; T const max; // silence MSVC warning C4512: assignment operator could not be generated BOOST_DELETED_FUNCTION(kwd_finite_iterator& operator= (kwd_finite_iterator const&)) }; template struct kwd_infinite_iterator // handles kwd(min, inf)[p] { kwd_infinite_iterator(T const min) : min BOOST_PREVENT_MACRO_SUBSTITUTION (min) {} typedef T type; bool flag_init() const { return min==0; } bool register_successful_parse(bool &flag,T &i) const { i++; flag = i>=min; return true; } T const min; // silence MSVC warning C4512: assignment operator could not be generated BOOST_DELETED_FUNCTION(kwd_infinite_iterator& operator= (kwd_infinite_iterator const&)) }; // This class enables the transportation of parameters needed to call // the occurrence constraint checker from higher level calls // It also serves to select the correct parse function call // of the keyword parser. The implementation changes depending if it is // called form a keyword parsing loop or not. template struct skipper_keyword_marker { typedef NoCasePass no_case_pass; skipper_keyword_marker(Skipper const &skipper,bool &flag,int &counter) : skipper(skipper) , flag(flag) , counter(counter) {} const Skipper &skipper; bool &flag; int &counter; }; template struct kwd_parser : spirit::qi::unary_parser > { struct kwd_parser_id; typedef Subject subject_type; typedef NoCase no_case_keyword; typedef Distinct distinct; typedef typename remove_const::type>::type char_type; typedef std::basic_string keyword_type; template struct attribute { typedef typename traits::build_std_vector< typename traits::attribute_of< Subject, Context, Iterator>::type >::type type; }; kwd_parser(Subject const& subject , typename add_reference::type keyword , LoopIter const& iter) : subject(subject), iter(iter), keyword(keyword) {} template kwd_parser(Subject const& subject , typename add_reference::type keyword , LoopIter const& iter, CharEncoding encoding) : subject(subject), iter(iter), keyword(keyword,encoding) {} // Call the subject parser on a non container attribute template bool parse_impl(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr,mpl::false_) const { return subject.parse(first,last,context,skipper,attr); } // Call the subject parser on a container attribute template bool parse_impl(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr,mpl::true_) const { // synthesized attribute needs to be default constructed typename traits::container_value::type val = typename traits::container_value::type(); Iterator save = first; bool r = subject.parse(first,last,context,skipper, val); if (r) { // push the parsed value into our attribute r = traits::push_back(attr, val); if (!r) first = save; } return r; } template bool parse(Iterator& first, Iterator const& last , Context& context, skipper_keyword_marker const& skipper , Attribute &attr) const { typedef typename traits::attribute_of< Subject, Context, Iterator>::type subject_attribute; typedef typename mpl::and_< traits::is_container , mpl::not_< traits::is_weak_substitute< subject_attribute,Attribute > > >::type predicate; if((no_case_keyword::value && NoCasePass::value) || !NoCasePass::value) { if(parse_impl(first,last,context,skipper.skipper,attr, predicate())) return iter.register_successful_parse(skipper.flag,skipper.counter); } return false; } template bool parse(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr) const { typedef typename traits::attribute_of< Subject, Context, Iterator>::type subject_attribute; typedef typename mpl::and_< traits::is_container , mpl::not_< traits::is_weak_substitute< subject_attribute,Attribute > > >::type predicate; // Parse the keyword bool flag = iter.flag_init(); int counter = 0; Iterator save = first; spirit::qi::skip_over(first, last, skipper); if(keyword.parse(first,last,context,skipper,unused)){ if((!distinct::value) || skipper.parse(first,last,unused,unused,unused)){ // Followed by the subject parser spirit::qi::skip_over(first, last, skipper); if(parse_impl(first,last,context,skipper,attr, predicate())) { return iter.register_successful_parse(flag,counter); } } } first = save; return flag; } template info what(Context& context) const { if(distinct::value){ if(no_case_keyword::value) return info("idkwd", subject.what(context)); else return info("dkwd", subject.what(context)); } else { if(no_case_keyword::value) return info("ikwd", subject.what(context)); else return info("kwd", subject.what(context)); } } Subject subject; LoopIter iter; typedef typename mpl::if_< no_case_keyword, spirit::qi::no_case_literal_string< KeywordType, true>, spirit::qi::literal_string >::type keyword_string_type; keyword_string_type keyword; // silence MSVC warning C4512: assignment operator could not be generated BOOST_DELETED_FUNCTION(kwd_parser& operator= (kwd_parser const&)) private: template static spirit::qi::detail::fail_function fail_function( Iterator& first, Iterator const& last , Context& context, Skipper const& skipper) { return spirit::qi::detail::fail_function (first, last, context, skipper); } }; template struct complex_kwd_parser : spirit::qi::unary_parser > { struct complex_kwd_parser_id; typedef Subject subject_type; typedef Distinct distinct; template struct attribute { typedef typename traits::build_std_vector< typename traits::attribute_of< Subject, Context, Iterator>::type >::type type; }; complex_kwd_parser(Subject const& subject , typename add_reference::type keyword , LoopIter const& iter) : subject(subject), iter(iter), keyword(keyword) {} // Call the subject parser on a non container attribute template bool parse_impl(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr,mpl::false_) const { return subject.parse(first,last,context,skipper,attr); } // Call the subject parser on a container attribute template bool parse_impl(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr,mpl::true_) const { // synthesized attribute needs to be default constructed typename traits::container_value::type val = typename traits::container_value::type(); Iterator save = first; bool r = subject.parse(first,last,context,skipper, val); if (r) { // push the parsed value into our attribute r = traits::push_back(attr, val); if (!r) first = save; } return r; } template bool parse(Iterator& first, Iterator const& last , Context& context, skipper_keyword_marker const& skipper , Attribute &attr) const { typedef typename traits::attribute_of< Subject, Context, Iterator>::type subject_attribute; typedef typename mpl::and_< traits::is_container , mpl::not_< traits::is_weak_substitute< subject_attribute,Attribute > > >::type predicate; if(parse_impl(first,last,context,skipper.skipper,attr, predicate())) return iter.register_successful_parse(skipper.flag,skipper.counter); return false; } template bool parse(Iterator& first, Iterator const& last , Context& context, Skipper const& skipper , Attribute& attr) const { typedef typename traits::attribute_of< Subject, Context, Iterator>::type subject_attribute; typedef typename mpl::and_< traits::is_container , mpl::not_< traits::is_weak_substitute< subject_attribute,Attribute > > >::type predicate; // Parse the keyword bool flag = iter.flag_init(); int counter = 0; Iterator save = first; spirit::qi::skip_over(first, last, skipper); if(keyword.parse(first,last,context,skipper,unused)){ if( !distinct::value || skipper.parse(first,last,unused,unused,unused)){ // Followed by the subject parser spirit::qi::skip_over(first, last, skipper); if(parse_impl(first,last,context,skipper,attr, predicate())) { return iter.register_successful_parse(flag,counter); } } } first = save; return flag; } template info what(Context& context) const { if(distinct::value) return info("dkwd", subject.what(context)); else return info("kwd", subject.what(context)); } Subject subject; LoopIter iter; KeywordType keyword; // silence MSVC warning C4512: assignment operator could not be generated BOOST_DELETED_FUNCTION(complex_kwd_parser& operator= (complex_kwd_parser const&)) private: template static spirit::qi::detail::fail_function fail_function( Iterator& first, Iterator const& last , Context& context, Skipper const& skipper) { return spirit::qi::detail::fail_function (first, last, context, skipper); } }; }}}} /////////////////////////////////////////////////////////////////////////////// namespace boost { namespace spirit { namespace qi { /////////////////////////////////////////////////////////////////////////// // Parser generators: make_xxx function (objects) /////////////////////////////////////////////////////////////////////////// template struct make_directive_internal_2_args { // is the keyword a string keyword ? typedef typename traits::is_string is_string_kwd_type; // make the keyword type typedef typename mpl::if_< is_string_kwd_type , T1 , typename result_of::compile::type >::type keyword_type; typedef typename add_const::type const_keyword; // select the pass iterator type typedef typename MakeDirectiveHelper::iterator_type iterator_type; // determine if a no case modifier applies to the context typedef has_modifier > no_case; // Determine the full type of the kwd / complex_kwd directive typedef typename mpl::if_< is_string_kwd_type, repository::qi::kwd_parser, repository::qi::complex_kwd_parser >::type result_type; // Return a kwd parser object template result_type create_kwd_string(Terminal const &term, Subject const & subject, boost::mpl::true_ ) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject ,MakeDirectiveHelper::make_iterator(term.args) ,encoding ); } template result_type create_kwd_string(Terminal const &term, Subject const & subject, boost::mpl::false_ ) const { return result_type(subject ,fusion::at_c<0>(term.args) ,MakeDirectiveHelper::make_iterator(term.args) ); } template result_type create_kwd(Terminal const &term, Subject const & subject, Modifiers const& /*modifiers*/, boost::mpl::true_ ) const { return create_kwd_string(term,subject,no_case()); } // Return a complex_kwd parser object template result_type create_kwd(Terminal const &term , Subject const & subject, Modifiers const& modifiers, boost::mpl::false_ ) const { return result_type(subject ,compile(fusion::at_c<0>(term.args),modifiers) ,MakeDirectiveHelper::make_iterator(term.args) ); } // Select which object type to return template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return create_kwd(term, subject, modifiers, is_string_kwd_type()); } }; // Directive kwd(key)[p] template struct make_directive_internal { // is the keyword a string keyword ? typedef typename traits::is_string is_string_kwd_type; // make the keyword type typedef typename mpl::if_< is_string_kwd_type , T1 , typename result_of::compile::type >::type keyword_type; typedef typename add_const::type const_keyword; // select the pass iterator type typedef repository::qi::kwd_pass_iterator iterator_type; // determine if a no case modifier applies to the context typedef has_modifier > no_case; // Determine the full type of the kwd / complex_kwd directive typedef typename mpl::if_< is_string_kwd_type, repository::qi::kwd_parser, repository::qi::complex_kwd_parser >::type result_type; // Return a kwd parser object template result_type create_kwd_string(Terminal const &term, Subject const & subject, boost::mpl::true_) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject ,fusion::at_c<0>(term.args) ,iterator_type() ,encoding ); } template result_type create_kwd_string(Terminal const &term, Subject const & subject, boost::mpl::false_) const { return result_type(subject ,fusion::at_c<0>(term.args) ,iterator_type() ); } template result_type create_kwd(Terminal const &term, Subject const & subject, Modifiers const& /*modifiers*/, boost::mpl::true_ ) const { return create_kwd_string(term,subject,no_case()); } // Return a complex_kwd parser object template result_type create_kwd(Terminal const &term , Subject const & subject, Modifiers const& modifiers, boost::mpl::false_ ) const { return result_type(subject ,compile(fusion::at_c<0>(term.args),modifiers) ,iterator_type() ); } // Select which object type to return template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers ) const { return create_kwd(term, subject, modifiers, is_string_kwd_type()); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term, subject, modifiers); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term, subject, modifiers); } }; // Directive ikwd(key)[p] template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_pass_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject ,fusion::at_c<0>(term.args) ,iterator_type() ,encoding ); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_pass_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject ,fusion::at_c<0>(term.args) ,iterator_type() ,encoding ); } }; // Directive kwd(key,exact)[p] template struct make_exact_helper { typedef repository::qi::kwd_exact_iterator iterator_type; template static iterator_type make_iterator(Args const& args) { return iterator_type(fusion::at_c<1>(args)); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::false_ , make_exact_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term,subject, modifiers); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::true_ , make_exact_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term, subject, modifiers); } }; // Directive ikwd(key,exact)[p] template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_exact_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& /*modifiers*/) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject , fusion::at_c<0>(term.args) , fusion::at_c<1>(term.args) , encoding ); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_exact_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& /*modifiers*/) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject , fusion::at_c<0>(term.args) , fusion::at_c<1>(term.args) , encoding ); } }; // Directive kwd(min, max)[p] template struct make_finite_helper { typedef repository::qi::kwd_finite_iterator iterator_type; template static iterator_type make_iterator(Args const& args) { return iterator_type(fusion::at_c<1>(args),fusion::at_c<2>(args)); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::false_ , make_finite_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term,subject, modifiers); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::true_ , make_finite_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, Modifiers const& modifiers) const { return make_directive_type()(term,subject, modifiers); } }; // Directive ikwd(min, max)[p] template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_finite_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject, fusion::at_c<0>(term.args), iterator_type( fusion::at_c<1>(term.args) , fusion::at_c<2>(term.args) , encoding ) ); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_finite_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject, fusion::at_c<0>(term.args), iterator_type( fusion::at_c<1>(term.args) , fusion::at_c<2>(term.args) , encoding ) ); } }; // Directive kwd(min, inf)[p] template struct make_infinite_helper { typedef repository::qi::kwd_infinite_iterator iterator_type; template static iterator_type make_iterator(Args const& args) { return iterator_type(fusion::at_c<1>(args)); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::false_ , make_infinite_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { return make_directive_type()(term,subject, unused_type()); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef make_directive_internal_2_args< T1 , T2 , Subject , Modifiers , mpl::false_ , make_infinite_helper > make_directive_type; typedef typename make_directive_type::result_type result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { return make_directive_type()(term,subject, unused_type()); } }; // Directive ikwd(min, inf)[p] template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_infinite_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject , fusion::at_c<0>(term.args) , fusion::at_c<1>(term.args) , encoding ); } }; template struct make_directive< terminal_ex >, Subject, Modifiers> { typedef typename add_const::type const_keyword; typedef repository::qi::kwd_infinite_iterator iterator_type; typedef repository::qi::kwd_parser result_type; template result_type operator()( Terminal const& term, Subject const& subject, unused_type) const { typename spirit::detail::get_encoding::type encoding; return result_type(subject , fusion::at_c<0>(term.args) , fusion::at_c<1>(term.args) , encoding ); } }; }}} namespace boost { namespace spirit { namespace traits { template struct has_semantic_action< repository::qi::kwd_parser< Subject, KeywordType, LoopIter, NoCase, Distinct > > : unary_has_semantic_action {}; template struct has_semantic_action< repository::qi::complex_kwd_parser< Subject, KeywordType, LoopIter, Distinct > > : unary_has_semantic_action {}; template struct handles_container, Attribute , Context, Iterator> : unary_handles_container {}; template struct handles_container, Attribute , Context, Iterator> : unary_handles_container {}; }}} #if defined(_MSC_VER) # pragma warning(pop) #endif #endif