357 lines
9.4 KiB
C++
357 lines
9.4 KiB
C++
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#ifndef BOOST_METAPARSE_V1_STRING_HPP
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#define BOOST_METAPARSE_V1_STRING_HPP
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2012.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/metaparse/config.hpp>
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#include <boost/metaparse/v1/fwd/string.hpp>
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#include <boost/metaparse/v1/string_tag.hpp>
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#include <boost/metaparse/v1/impl/string_iterator.hpp>
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#include <boost/metaparse/v1/impl/empty_string.hpp>
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#include <boost/metaparse/v1/impl/size.hpp>
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#include <boost/metaparse/v1/impl/pop_front.hpp>
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#include <boost/metaparse/v1/impl/push_front_c.hpp>
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#include <boost/metaparse/v1/impl/push_back_c.hpp>
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#include <boost/metaparse/v1/impl/pop_back.hpp>
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#include <boost/metaparse/v1/impl/assert_string_length.hpp>
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#include <boost/metaparse/v1/impl/string_at.hpp>
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#include <boost/preprocessor/arithmetic/sub.hpp>
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#include <boost/preprocessor/punctuation/comma_if.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/preprocessor/repetition/enum_params.hpp>
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#include <boost/preprocessor/repetition/repeat_from_to.hpp>
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#include <boost/preprocessor/tuple/eat.hpp>
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#include <boost/type_traits/is_same.hpp>
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/*
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* The string type
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*/
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namespace boost
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{
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namespace metaparse
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{
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namespace v1
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{
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#ifdef BOOST_METAPARSE_VARIADIC_STRING
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template <char... Cs>
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struct string
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{
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typedef string type;
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typedef string_tag tag;
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};
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#else
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template <BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C)>
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struct string
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{
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typedef string type;
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typedef string_tag tag;
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};
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#endif
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}
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}
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}
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/*
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* Boost.MPL overloads
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*/
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namespace boost
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{
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namespace mpl
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{
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// push_back
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template <class S>
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struct push_back_impl;
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template <>
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struct push_back_impl<boost::metaparse::v1::string_tag>
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{
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typedef push_back_impl type;
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template <class S, class C>
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struct apply :
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boost::metaparse::v1::impl::push_back_c<
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typename S::type,
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C::type::value
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>
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{};
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};
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// pop_back
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template <class S>
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struct pop_back_impl;
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template <>
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struct pop_back_impl<boost::metaparse::v1::string_tag>
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{
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typedef pop_back_impl type;
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template <class S>
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struct apply : boost::metaparse::v1::impl::pop_back<S> {};
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};
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// push_front
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template <class S>
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struct push_front_impl;
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template <>
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struct push_front_impl<boost::metaparse::v1::string_tag>
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{
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typedef push_front_impl type;
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template <class S, class C>
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struct apply :
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boost::metaparse::v1::impl::push_front_c<
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typename S::type,
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C::type::value
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>
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{};
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};
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// pop_front
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template <class S>
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struct pop_front_impl;
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template <>
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struct pop_front_impl<boost::metaparse::v1::string_tag>
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{
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typedef pop_front_impl type;
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template <class S>
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struct apply : boost::metaparse::v1::impl::pop_front<S> {};
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};
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// clear
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template <class S>
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struct clear_impl;
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template <>
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struct clear_impl<boost::metaparse::v1::string_tag>
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{
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typedef clear_impl type;
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template <class S>
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struct apply : boost::metaparse::v1::string<> {};
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};
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// begin
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template <class S>
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struct begin_impl;
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template <>
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struct begin_impl<boost::metaparse::v1::string_tag>
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{
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typedef begin_impl type;
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template <class S>
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struct apply :
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boost::metaparse::v1::impl::string_iterator<typename S::type, 0>
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{};
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};
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// end
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template <class S>
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struct end_impl;
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template <>
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struct end_impl<boost::metaparse::v1::string_tag>
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{
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typedef end_impl type;
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template <class S>
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struct apply :
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boost::metaparse::v1::impl::string_iterator<
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typename S::type,
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boost::metaparse::v1::impl::size<typename S::type>::type::value
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>
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{};
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};
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// equal_to
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template <class A, class B>
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struct equal_to_impl;
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template <>
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struct equal_to_impl<
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boost::metaparse::v1::string_tag,
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boost::metaparse::v1::string_tag
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>
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{
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typedef equal_to_impl type;
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template <class A, class B>
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struct apply : boost::is_same<typename A::type, typename B::type> {};
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};
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template <class T>
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struct equal_to_impl<boost::metaparse::v1::string_tag, T>
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{
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typedef equal_to_impl type;
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template <class, class>
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struct apply : false_ {};
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};
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template <class T>
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struct equal_to_impl<T, boost::metaparse::v1::string_tag> :
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equal_to_impl<boost::metaparse::v1::string_tag, T>
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{};
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// c_str
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template <class S>
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struct c_str;
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#ifdef BOOST_METAPARSE_VARIADIC_STRING
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template <char... Cs>
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struct c_str<boost::metaparse::v1::string<Cs...>>
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{
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typedef c_str type;
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#ifdef BOOST_NO_CONSTEXPR_C_STR
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static const char value[sizeof...(Cs) + 1];
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#else
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static constexpr char value[sizeof...(Cs) + 1] = {Cs..., 0};
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#endif
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};
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template <>
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struct c_str<boost::metaparse::v1::string<>> :
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boost::metaparse::v1::impl::empty_string<>
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{};
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#ifdef BOOST_NO_CONSTEXPR_C_STR
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template <char... Cs>
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const char c_str<boost::metaparse::v1::string<Cs...>>::value[]
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= {Cs..., 0};
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#else
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template <char... Cs>
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constexpr char c_str<boost::metaparse::v1::string<Cs...>>::value[];
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#endif
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#else
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template <BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C)>
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struct c_str<
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boost::metaparse::v1::string<
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BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, C)
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>
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>
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{
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typedef c_str type;
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static BOOST_CONSTEXPR const char
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value[BOOST_METAPARSE_LIMIT_STRING_SIZE + 1]
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#if !defined BOOST_NO_CONSTEXPR && !defined BOOST_NO_CXX11_CONSTEXPR
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= {BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, C), 0}
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#endif
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;
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};
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template <BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, int C)>
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BOOST_CONSTEXPR const char
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c_str<
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boost::metaparse::v1::string<
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BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, C)
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>
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>::value[BOOST_METAPARSE_LIMIT_STRING_SIZE + 1]
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#if defined BOOST_NO_CONSTEXPR || defined BOOST_NO_CXX11_CONSTEXPR
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= {BOOST_PP_ENUM_PARAMS(BOOST_METAPARSE_LIMIT_STRING_SIZE, C), 0}
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#endif
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;
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template <>
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struct c_str<boost::metaparse::v1::string<> > :
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boost::metaparse::v1::impl::empty_string<>
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{
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typedef c_str type;
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};
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#ifdef BOOST_METAPARSE_DEF
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# error BOOST_METAPARSE_DEF already defined
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#endif
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#define BOOST_METAPARSE_DEF(n) \
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= {BOOST_PP_ENUM_PARAMS(n, C) BOOST_PP_COMMA_IF(n) 0}
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#ifdef BOOST_METAPARSE_STRING_DECLARE
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# error BOOST_METAPARSE_STRING_DECLARE already defined
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#endif
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#ifdef BOOST_METAPARSE_STRING_DEFINE
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# error BOOST_METAPARSE_STRING_DECLARE already defined
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#endif
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#if !defined BOOST_NO_CONSTEXPR && !defined BOOST_NO_CXX11_CONSTEXPR
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# define BOOST_METAPARSE_STRING_DECLARE(n) BOOST_METAPARSE_DEF(n)
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# define BOOST_METAPARSE_STRING_DEFINE(n)
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#else
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# define BOOST_METAPARSE_STRING_DECLARE(n)
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# define BOOST_METAPARSE_STRING_DEFINE(n) BOOST_METAPARSE_DEF(n)
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#endif
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#ifdef BOOST_METAPARSE_STRING_CASE
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# error BOOST_METAPARSE_STRING_CASE is already defined
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#endif
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#define BOOST_METAPARSE_STRING_CASE(z, n, unused) \
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template <BOOST_PP_ENUM_PARAMS(n, int C)> \
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struct \
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c_str< \
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boost::metaparse::v1::string< \
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BOOST_PP_ENUM_PARAMS(n, C) BOOST_PP_COMMA_IF(n) \
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BOOST_PP_ENUM( \
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BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_STRING_SIZE, n), \
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BOOST_NO_CHAR BOOST_PP_TUPLE_EAT(3), \
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~ \
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) \
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> \
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> \
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{ \
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typedef c_str type; \
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static BOOST_CONSTEXPR const char value[n + 1] \
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BOOST_METAPARSE_STRING_DECLARE(n); \
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}; \
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\
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template <BOOST_PP_ENUM_PARAMS(n, int C)> \
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BOOST_CONSTEXPR const char c_str< \
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boost::metaparse::v1::string< \
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BOOST_PP_ENUM_PARAMS(n, C) BOOST_PP_COMMA_IF(n) \
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BOOST_PP_ENUM( \
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BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_STRING_SIZE, n), \
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BOOST_NO_CHAR BOOST_PP_TUPLE_EAT(3), \
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~ \
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) \
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> \
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>::value[n + 1] BOOST_METAPARSE_STRING_DEFINE(n);
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BOOST_PP_REPEAT_FROM_TO(
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1,
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BOOST_METAPARSE_LIMIT_STRING_SIZE,
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BOOST_METAPARSE_STRING_CASE,
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~
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)
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#undef BOOST_METAPARSE_STRING_CASE
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#undef BOOST_METAPARSE_STRING_DECLARE
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#undef BOOST_METAPARSE_STRING_DEFINE
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#undef BOOST_METAPARSE_DEF
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#endif
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}
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}
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#include <boost/metaparse/v1/impl/remove_trailing_no_chars.hpp>
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#if \
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defined BOOST_METAPARSE_VARIADIC_STRING \
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&& !defined BOOST_NO_CONSTEXPR && !defined BOOST_NO_CXX11_CONSTEXPR
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# include <boost/metaparse/v1/impl/string.hpp>
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#else
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# define BOOST_METAPARSE_V1_CONFIG_NO_BOOST_METAPARSE_STRING 1
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#endif
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#endif
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