| /*============================================================================= | |
| Copyright (c) 2001-2011 Joel de Guzman | |
| Copyright (c) 2001-2011 Hartmut Kaiser | |
| Copyright (c) 2010 Bryce Lelbach | |
| 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_LIT_APR_18_2006_1125PM) | |
| #define BOOST_SPIRIT_LIT_APR_18_2006_1125PM | |
| #if defined(_MSC_VER) | |
| #pragma once | |
| #endif | |
| #include <boost/spirit/home/qi/domain.hpp> | |
| #include <boost/spirit/home/qi/skip_over.hpp> | |
| #include <boost/spirit/home/qi/detail/string_parse.hpp> | |
| #include <boost/spirit/home/qi/parser.hpp> | |
| #include <boost/spirit/home/qi/meta_compiler.hpp> | |
| #include <boost/spirit/home/qi/auxiliary/lazy.hpp> | |
| #include <boost/spirit/home/qi/detail/enable_lit.hpp> | |
| #include <boost/spirit/home/support/info.hpp> | |
| #include <boost/spirit/home/support/char_class.hpp> | |
| #include <boost/spirit/home/support/modify.hpp> | |
| #include <boost/spirit/home/support/unused.hpp> | |
| #include <boost/spirit/home/support/common_terminals.hpp> | |
| #include <boost/spirit/home/support/string_traits.hpp> | |
| #include <boost/spirit/home/support/detail/get_encoding.hpp> | |
| #include <boost/spirit/home/support/handles_container.hpp> | |
| #include <boost/fusion/include/at.hpp> | |
| #include <boost/fusion/include/value_at.hpp> | |
| #include <boost/type_traits/add_reference.hpp> | |
| #include <boost/type_traits/add_const.hpp> | |
| #include <boost/mpl/assert.hpp> | |
| #include <boost/mpl/if.hpp> | |
| #include <boost/detail/workaround.hpp> | |
| #include <boost/utility/enable_if.hpp> | |
| #include <string> | |
| namespace boost { namespace spirit | |
| { | |
| /////////////////////////////////////////////////////////////////////////// | |
| // Enablers | |
| /////////////////////////////////////////////////////////////////////////// | |
| template <typename T> | |
| struct use_terminal<qi::domain, T | |
| , typename enable_if<traits::is_string<T> >::type> // enables strings | |
| : mpl::true_ {}; | |
| template <typename CharEncoding, typename A0> | |
| struct use_terminal<qi::domain | |
| , terminal_ex< | |
| tag::char_code<tag::string, CharEncoding> // enables string(str) | |
| , fusion::vector1<A0> > | |
| > : traits::is_string<A0> {}; | |
| template <typename CharEncoding> // enables string(f) | |
| struct use_lazy_terminal< | |
| qi::domain | |
| , tag::char_code<tag::string, CharEncoding> | |
| , 1 /*arity*/ | |
| > : mpl::true_ {}; | |
| // enables lit(...) | |
| template <typename A0> | |
| struct use_terminal<qi::domain | |
| , terminal_ex<tag::lit, fusion::vector1<A0> > | |
| , typename enable_if<traits::is_string<A0> >::type> | |
| : mpl::true_ {}; | |
| }} | |
| namespace boost { namespace spirit { namespace qi | |
| { | |
| using spirit::lit; | |
| using spirit::lit_type; | |
| /////////////////////////////////////////////////////////////////////////// | |
| // Parse for literal strings | |
| /////////////////////////////////////////////////////////////////////////// | |
| template <typename String, bool no_attribute> | |
| struct literal_string | |
| : primitive_parser<literal_string<String, no_attribute> > | |
| { | |
| typedef typename | |
| remove_const<typename traits::char_type_of<String>::type>::type | |
| char_type; | |
| typedef std::basic_string<char_type> string_type; | |
| literal_string(typename add_reference<String>::type str) | |
| : str(str) | |
| {} | |
| template <typename Context, typename Iterator> | |
| struct attribute | |
| { | |
| typedef typename mpl::if_c< | |
| no_attribute, unused_type, string_type>::type | |
| type; | |
| }; | |
| template <typename Iterator, typename Context | |
| , typename Skipper, typename Attribute> | |
| bool parse(Iterator& first, Iterator const& last | |
| , Context& /*context*/, Skipper const& skipper, Attribute& attr) const | |
| { | |
| qi::skip_over(first, last, skipper); | |
| return detail::string_parse(str, first, last, attr); | |
| } | |
| template <typename Context> | |
| info what(Context& /*context*/) const | |
| { | |
| return info("literal-string", str); | |
| } | |
| String str; | |
| private: | |
| // silence MSVC warning C4512: assignment operator could not be generated | |
| literal_string& operator= (literal_string const&); | |
| }; | |
| template <typename String, bool no_attribute> | |
| struct no_case_literal_string | |
| : primitive_parser<no_case_literal_string<String, no_attribute> > | |
| { | |
| typedef typename | |
| remove_const<typename traits::char_type_of<String>::type>::type | |
| char_type; | |
| typedef std::basic_string<char_type> string_type; | |
| template <typename CharEncoding> | |
| no_case_literal_string(char_type const* in, CharEncoding encoding) | |
| : str_lo(in) | |
| , str_hi(in) | |
| { | |
| #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600)) | |
| encoding; // suppresses warning: C4100: 'encoding' : unreferenced formal parameter | |
| #endif | |
| typename string_type::iterator loi = str_lo.begin(); | |
| typename string_type::iterator hii = str_hi.begin(); | |
| for (; loi != str_lo.end(); ++loi, ++hii, ++in) | |
| { | |
| typedef typename CharEncoding::char_type encoded_char_type; | |
| *loi = static_cast<char_type>(encoding.tolower(encoded_char_type(*loi))); | |
| *hii = static_cast<char_type>(encoding.toupper(encoded_char_type(*hii))); | |
| } | |
| } | |
| template <typename Context, typename Iterator> | |
| struct attribute | |
| { | |
| typedef typename mpl::if_c< | |
| no_attribute, unused_type, string_type>::type | |
| type; | |
| }; | |
| template <typename Iterator, typename Context | |
| , typename Skipper, typename Attribute> | |
| bool parse(Iterator& first, Iterator const& last | |
| , Context& /*context*/, Skipper const& skipper, Attribute& attr) const | |
| { | |
| qi::skip_over(first, last, skipper); | |
| return detail::string_parse(str_lo, str_hi, first, last, attr); | |
| } | |
| template <typename Context> | |
| info what(Context& /*context*/) const | |
| { | |
| return info("no-case-literal-string", str_lo); | |
| } | |
| string_type str_lo, str_hi; | |
| }; | |
| /////////////////////////////////////////////////////////////////////////// | |
| // Parser generators: make_xxx function (objects) | |
| /////////////////////////////////////////////////////////////////////////// | |
| template <typename T, typename Modifiers> | |
| struct make_primitive<T, Modifiers | |
| , typename enable_if<traits::is_string<T> >::type> | |
| { | |
| typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case; | |
| typedef typename add_const<T>::type const_string; | |
| typedef typename mpl::if_< | |
| no_case | |
| , no_case_literal_string<const_string, true> | |
| , literal_string<const_string, true> >::type | |
| result_type; | |
| result_type operator()( | |
| typename add_reference<const_string>::type str, unused_type) const | |
| { | |
| return op(str, no_case()); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::false_) const | |
| { | |
| return result_type(str); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::true_) const | |
| { | |
| typename spirit::detail::get_encoding<Modifiers, | |
| spirit::char_encoding::standard>::type encoding; | |
| return result_type(traits::get_c_string(str), encoding); | |
| } | |
| }; | |
| // lit("...") | |
| template <typename Modifiers, typename A0> | |
| struct make_primitive< | |
| terminal_ex<tag::lit, fusion::vector1<A0> > | |
| , Modifiers | |
| , typename enable_if<traits::is_string<A0> >::type> | |
| { | |
| typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case; | |
| typedef typename add_const<A0>::type const_string; | |
| typedef typename mpl::if_< | |
| no_case | |
| , no_case_literal_string<const_string, true> | |
| , literal_string<const_string, true> >::type | |
| result_type; | |
| template <typename Terminal> | |
| result_type operator()(Terminal const& term, unused_type) const | |
| { | |
| return op(fusion::at_c<0>(term.args), no_case()); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::false_) const | |
| { | |
| return result_type(str); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::true_) const | |
| { | |
| typedef typename traits::char_encoding_from_char< | |
| typename traits::char_type_of<A0>::type>::type encoding_type; | |
| typename spirit::detail::get_encoding<Modifiers, | |
| encoding_type>::type encoding; | |
| return result_type(traits::get_c_string(str), encoding); | |
| } | |
| }; | |
| /////////////////////////////////////////////////////////////////////////// | |
| // string("...") | |
| template <typename CharEncoding, typename Modifiers, typename A0> | |
| struct make_primitive< | |
| terminal_ex< | |
| tag::char_code<tag::string, CharEncoding> | |
| , fusion::vector1<A0> > | |
| , Modifiers> | |
| { | |
| typedef CharEncoding encoding; | |
| typedef has_modifier<Modifiers, tag::char_code_base<tag::no_case> > no_case; | |
| typedef typename add_const<A0>::type const_string; | |
| typedef typename mpl::if_< | |
| no_case | |
| , no_case_literal_string<const_string, false> | |
| , literal_string<const_string, false> >::type | |
| result_type; | |
| template <typename Terminal> | |
| result_type operator()(Terminal const& term, unused_type) const | |
| { | |
| return op(fusion::at_c<0>(term.args), no_case()); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::false_) const | |
| { | |
| return result_type(str); | |
| } | |
| template <typename String> | |
| result_type op(String const& str, mpl::true_) const | |
| { | |
| return result_type(traits::get_c_string(str), encoding()); | |
| } | |
| }; | |
| }}} | |
| namespace boost { namespace spirit { namespace traits | |
| { | |
| /////////////////////////////////////////////////////////////////////////// | |
| template <typename String, bool no_attribute, typename Attribute | |
| ,typename Context, typename Iterator> | |
| struct handles_container<qi::literal_string<String, no_attribute> | |
| , Attribute, Context, Iterator> | |
| : mpl::true_ {}; | |
| template <typename String, bool no_attribute, typename Attribute | |
| , typename Context, typename Iterator> | |
| struct handles_container<qi::no_case_literal_string<String, no_attribute> | |
| , Attribute, Context, Iterator> | |
| : mpl::true_ {}; | |
| }}} | |
| #endif |