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Diffstat (limited to 'src/boost/libs/metaparse/test/sequence_apply.cpp')
| -rw-r--r-- | src/boost/libs/metaparse/test/sequence_apply.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/boost/libs/metaparse/test/sequence_apply.cpp b/src/boost/libs/metaparse/test/sequence_apply.cpp new file mode 100644 index 00000000..4d4cd5c6 --- /dev/null +++ b/src/boost/libs/metaparse/test/sequence_apply.cpp @@ -0,0 +1,162 @@ +// 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 + > + )); +} + |