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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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