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- // Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
- // 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)
- #include <boost/metaparse/sequence_apply.hpp>
- #include <boost/metaparse/is_error.hpp>
- #include <boost/metaparse/start.hpp>
- #include <boost/metaparse/get_result.hpp>
- #include <boost/metaparse/always.hpp>
- #include <boost/metaparse/one_char.hpp>
- #include "common.hpp"
- #include <boost/mpl/equal_to.hpp>
- #include <boost/mpl/list.hpp>
- #include <boost/mpl/at.hpp>
- #include <boost/mpl/vector_c.hpp>
- #include <boost/mpl/vector.hpp>
- #include <boost/mpl/assert.hpp>
- #include <boost/mpl/char.hpp>
- #include <boost/type_traits/is_same.hpp>
- #include <boost/preprocessor/repetition/repeat_from_to.hpp>
- #include <boost/preprocessor/repetition/enum_params.hpp>
- #include <boost/preprocessor/repetition/enum.hpp>
- #include <boost/preprocessor/tuple/eat.hpp>
- #include <boost/preprocessor/cat.hpp>
- #include "test_case.hpp"
- namespace
- {
- #ifdef BOOST_METAPARSE_C_VALUE
- # error BOOST_METAPARSE_C_VALUE already defined
- #endif
- #define BOOST_METAPARSE_C_VALUE(z, n, unused) BOOST_PP_CAT(C, n)::value
- #ifdef BOOST_METAPARSE_TEMPLATE
- # error BOOST_METAPARSE_TEMPLATE already defined
- #endif
- #define BOOST_METAPARSE_TEMPLATE(z, n, unused) \
- template <BOOST_PP_ENUM(n, char BOOST_PP_TUPLE_EAT(3), ~)> \
- struct BOOST_PP_CAT(template_c, n) \
- { \
- typedef BOOST_PP_CAT(template_c, n) type; \
- }; \
- \
- template <BOOST_PP_ENUM_PARAMS(n, class C)> \
- struct BOOST_PP_CAT(template, n) \
- { \
- typedef \
- BOOST_PP_CAT(template_c, n)< \
- BOOST_PP_ENUM(n, BOOST_METAPARSE_C_VALUE, ~) \
- > \
- type; \
- };
- BOOST_PP_REPEAT_FROM_TO(1, 4, BOOST_METAPARSE_TEMPLATE, ~)
- #undef BOOST_METAPARSE_TEMPLATE
- #undef BOOST_METAPARSE_C_VALUE
- template <class T> struct has_no_type {};
- // "is_same<T::type::type, double_eval<T>::type>" - helper tool to avoid
- // writing type::type (which is interpreted as the constructor of ::type by
- // msvc-7.1)
- template <class T> struct double_eval : T::type {};
- }
- BOOST_METAPARSE_TEST_CASE(sequence_apply)
- {
- using boost::metaparse::get_result;
- using boost::metaparse::sequence_apply1;
- using boost::metaparse::sequence_apply2;
- using boost::metaparse::sequence_apply3;
- using boost::metaparse::start;
- using boost::metaparse::is_error;
- using boost::metaparse::always;
- using boost::metaparse::one_char;
-
- using boost::mpl::list;
- using boost::mpl::equal_to;
- using boost::mpl::at_c;
- using boost::mpl::vector_c;
- using boost::mpl::vector;
- using boost::mpl::char_;
- using boost::is_same;
- typedef always<one_char, int> always_int;
- // test_one_parser
- BOOST_MPL_ASSERT((
- is_same<
- template_c1<'h'>,
- double_eval<
- get_result<
- sequence_apply1<template1, lit_h>::apply<str_hello, start>
- >
- >::type
- >
- ));
- // test_one_failing_parser
- BOOST_MPL_ASSERT((
- is_error<sequence_apply1<template1, lit_e>::apply<str_hello, start> >
- ));
-
- // test_two_chars
- BOOST_MPL_ASSERT((
- is_same<
- template_c2<'h', 'e'>,
- double_eval<
- get_result<
- sequence_apply2<template2, lit_h, lit_e>::apply<str_hello, start>
- >
- >::type
- >
- ));
- // test_first_fails
- BOOST_MPL_ASSERT((
- is_error<sequence_apply2<template2, lit_x, lit_e>::apply<str_hello, start> >
- ));
- // test_second_fails
- BOOST_MPL_ASSERT((
- is_error<sequence_apply2<template2, lit_h, lit_x>::apply<str_hello, start> >
- ));
- // test_empty_input
- BOOST_MPL_ASSERT((
- is_error<sequence_apply2<template2, lit_h, lit_e>::apply<str_,start> >
- ));
- // test_three_chars
- BOOST_MPL_ASSERT((
- is_same<
- template_c3<'h', 'e', 'l'>,
- double_eval<
- get_result<
- sequence_apply3<template3, lit_h, lit_e, lit_l>
- ::apply<str_hello, start>
- >
- >::type
- >
- ));
- // test_no_extra_evaluation
- BOOST_MPL_ASSERT((
- is_same<
- has_no_type<int>,
- get_result<
- sequence_apply1<has_no_type, always_int>::apply<str_ca, start>
- >::type
- >
- ));
- }
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