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/*=============================================================================
Copyright (c) 2008 Francois Barel
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/type_traits/is_same.hpp>
#include <boost/spirit/include/qi_operator.hpp>
#include <boost/spirit/include/qi_char.hpp>
#include <boost/phoenix/core.hpp>
#include <boost/phoenix/operator.hpp>
#include <iterator>
#include "test.hpp"
namespace testns
{
BOOST_SPIRIT_TERMINAL_NAME_EX( ops, ops_type )
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4512) // assignment operator could not be generated.
#endif
///////////////////////////////////////////////////////////////////////////
// Parsers
///////////////////////////////////////////////////////////////////////////
template <typename T1>
struct ops_1_parser
: boost::spirit::qi::primitive_parser<ops_1_parser<T1> >
{
ops_1_parser(T1 t1)
: t1(t1)
{}
template <typename Context, typename Iterator>
struct attribute
{
typedef int type; // Number of parsed chars.
};
template <typename Iterator, typename Context
, typename Skipper, typename Attribute>
bool parse(Iterator& first, Iterator const& last
, Context& /*context*/, Skipper const& skipper
, Attribute& attr) const
{
boost::spirit::qi::skip_over(first, last, skipper);
int count = 0;
Iterator it = first;
typedef typename std::iterator_traits<Iterator>::value_type Char;
for (T1 t = 0; t < t1; t++, count++)
if (it == last || *it++ != Char('+'))
return false;
boost::spirit::traits::assign_to(count, attr);
first = it;
return true;
}
template <typename Context>
boost::spirit::qi::info what(Context& /*context*/) const
{
return boost::spirit::qi::info("ops_1");
}
const T1 t1;
};
template <typename T1, typename T2>
struct ops_2_parser
: boost::spirit::qi::primitive_parser<ops_2_parser<T1, T2> >
{
ops_2_parser(T1 t1, T2 t2)
: t1(t1)
, t2(t2)
{}
template <typename Context, typename Iterator>
struct attribute
{
typedef int type; // Number of parsed chars.
};
template <typename Iterator, typename Context
, typename Skipper, typename Attribute>
bool parse(Iterator& first, Iterator const& last
, Context& /*context*/, Skipper const& skipper
, Attribute& attr) const
{
boost::spirit::qi::skip_over(first, last, skipper);
int count = 0;
Iterator it = first;
typedef typename std::iterator_traits<Iterator>::value_type Char;
for (T1 t = 0; t < t1; t++, count++)
if (it == last || *it++ != Char('+'))
return false;
for (T2 t = 0; t < t2; t++, count++)
if (it == last || *it++ != Char('-'))
return false;
boost::spirit::traits::assign_to(count, attr);
first = it;
return true;
}
template <typename Context>
boost::spirit::qi::info what(Context& /*context*/) const
{
return boost::spirit::qi::info("ops_2");
}
const T1 t1;
const T2 t2;
};
template <typename T1, typename T2, typename T3>
struct ops_3_parser
: boost::spirit::qi::primitive_parser<ops_3_parser<T1, T2, T3> >
{
ops_3_parser(T1 t1, T2 t2, T3 t3)
: t1(t1)
, t2(t2)
, t3(t3)
{}
template <typename Context, typename Iterator>
struct attribute
{
typedef int type; // Number of parsed chars.
};
template <typename Iterator, typename Context
, typename Skipper, typename Attribute>
bool parse(Iterator& first, Iterator const& last
, Context& /*context*/, Skipper const& skipper
, Attribute& attr) const
{
boost::spirit::qi::skip_over(first, last, skipper);
int count = 0;
Iterator it = first;
typedef typename std::iterator_traits<Iterator>::value_type Char;
for (T1 t = 0; t < t1; t++, count++)
if (it == last || *it++ != Char('+'))
return false;
for (T2 t = 0; t < t2; t++, count++)
if (it == last || *it++ != Char('-'))
return false;
for (T3 t = 0; t < t3; t++, count++)
if (it == last || *it++ != Char('*'))
return false;
boost::spirit::traits::assign_to(count, attr);
first = it;
return true;
}
template <typename Context>
boost::spirit::qi::info what(Context& /*context*/) const
{
return boost::spirit::qi::info("ops_3");
}
const T1 t1;
const T2 t2;
const T3 t3;
};
#ifdef _MSC_VER
# pragma warning(pop)
#endif
}
namespace boost { namespace spirit
{
///////////////////////////////////////////////////////////////////////////
// Enablers
///////////////////////////////////////////////////////////////////////////
template <typename T1>
struct use_terminal<qi::domain
, terminal_ex<testns::tag::ops, fusion::vector1<T1> > >
: mpl::true_ {};
template <typename T1, typename T2>
struct use_terminal<qi::domain
, terminal_ex<testns::tag::ops, fusion::vector2<T1, T2> > >
: mpl::true_ {};
template <typename T1, typename T2, typename T3>
struct use_terminal<qi::domain
, terminal_ex<testns::tag::ops, fusion::vector3<T1, T2, T3> > >
: mpl::true_ {};
template <>
struct use_lazy_terminal<qi::domain, testns::tag::ops, 1>
: mpl::true_ {};
template <>
struct use_lazy_terminal<qi::domain, testns::tag::ops, 2>
: mpl::true_ {};
template <>
struct use_lazy_terminal<qi::domain, testns::tag::ops, 3>
: mpl::true_ {};
}}
namespace boost { namespace spirit { namespace qi
{
///////////////////////////////////////////////////////////////////////////
// Parser generators: make_xxx function (objects)
///////////////////////////////////////////////////////////////////////////
template <typename Modifiers, typename T1>
struct make_primitive<
terminal_ex<testns::tag::ops, fusion::vector1<T1> >
, Modifiers>
{
typedef testns::ops_1_parser<T1> result_type;
template <typename Terminal>
result_type operator()(const Terminal& term, unused_type) const
{
return result_type(
fusion::at_c<0>(term.args)
);
}
};
template <typename Modifiers, typename T1, typename T2>
struct make_primitive<
terminal_ex<testns::tag::ops, fusion::vector2<T1, T2> >
, Modifiers>
{
typedef testns::ops_2_parser<T1, T2> result_type;
template <typename Terminal>
result_type operator()(const Terminal& term, unused_type) const
{
return result_type(
fusion::at_c<0>(term.args)
, fusion::at_c<1>(term.args)
);
}
};
template <typename Modifiers, typename T1, typename T2, typename T3>
struct make_primitive<
terminal_ex<testns::tag::ops, fusion::vector3<T1, T2, T3> >
, Modifiers>
{
typedef testns::ops_3_parser<T1, T2, T3> result_type;
template <typename Terminal>
result_type operator()(const Terminal& term, unused_type) const
{
return result_type(
fusion::at_c<0>(term.args)
, fusion::at_c<1>(term.args)
, fusion::at_c<2>(term.args)
);
}
};
}}}
namespace testns
{
template <typename T1, typename T>
void check_type_1(const T& /*t*/)
{
BOOST_STATIC_ASSERT(( boost::is_same<T
, typename boost::spirit::terminal<testns::tag::ops>::result<T1>::type >::value ));
}
template <typename T1, typename T2, typename T>
void check_type_2(const T& /*t*/)
{
BOOST_STATIC_ASSERT(( boost::is_same<T
, typename boost::spirit::terminal<testns::tag::ops>::result<T1, T2>::type >::value ));
}
template <typename T1, typename T2, typename T3, typename T>
void check_type_3(const T& /*t*/)
{
BOOST_STATIC_ASSERT(( boost::is_same<T
, typename boost::spirit::terminal<testns::tag::ops>::result<T1, T2, T3>::type >::value ));
}
}
int
main()
{
using spirit_test::test_attr;
using spirit_test::test;
using testns::ops;
using testns::check_type_1;
using testns::check_type_2;
using testns::check_type_3;
{ // immediate args
int c = 0;
#define IP1 ops(2)
check_type_1<int>(IP1);
BOOST_TEST(test_attr("++/", IP1 >> '/', c) && c == 2);
c = 0;
#define IP2 ops(2, 3)
check_type_2<int, int>(IP2);
BOOST_TEST(test_attr("++---/", IP2 >> '/', c) && c == 5);
c = 0;
#define IP3 ops(2, 3, 4)
check_type_3<int, int, int>(IP3);
BOOST_TEST(!test("++---***/", IP3 >> '/'));
#define IP4 ops(2, 3, 4)
check_type_3<int, int, int>(IP4);
BOOST_TEST(test_attr("++---****/", IP4 >> '/', c) && c == 9);
}
using boost::phoenix::val;
using boost::phoenix::actor;
using boost::phoenix::expression::value;
{ // all lazy args
int c = 0;
#define LP1 ops(val(1))
check_type_1<value<int>::type>(LP1);
BOOST_TEST(test_attr("+/", LP1 >> '/', c) && c == 1);
c = 0;
#define LP2 ops(val(1), val(4))
check_type_2<value<int>::type, value<int>::type>(LP2);
BOOST_TEST(test_attr("+----/", LP2 >> '/', c) && c == 5);
c = 0;
#define LP3 ops(val((char)2), val(3.), val(4))
check_type_3<value<char>::type, value<double>::type, value<int>::type>(LP3);
BOOST_TEST(!test("++---***/", LP3 >> '/'));
#define LP4 ops(val(1), val(2), val(3))
check_type_3<value<int>::type, value<int>::type, value<int>::type>(LP4);
BOOST_TEST(test_attr("+--***/", LP4 >> '/', c) && c == 6);
}
{ // mixed immediate and lazy args
namespace fusion = boost::fusion;
namespace phx = boost::phoenix;
int c = 0;
#define MP1 ops(val(3), 2)
check_type_2<value<int>::type, int>(MP1);
BOOST_TEST(test_attr("+++--/", MP1 >> '/', c) && c == 5);
c = 0;
#define MP2 ops(4, val(1))
check_type_2<int, value<int>::type>(MP2);
BOOST_TEST(test_attr("++++-/", MP2 >> '/', c) && c == 5);
c = 0;
#define MP3 ops(2, val(2), val(2))
check_type_3<int, value<int>::type, value<int>::type>(MP3);
BOOST_TEST(!test("++-**/", MP3 >> '/'));
#define MP4 ops(2, val(2), 2)
check_type_3<int, value<int>::type, int>(MP4);
BOOST_TEST(test_attr("++--**/", MP4 >> '/', c) && c == 6);
c = 0;
#define MP5 ops(val(5) - val(3), 2, val(2))
check_type_3<phx::expression::minus<value<int>::type, value<int>::type>::type, int, value<int>::type>(MP5);
BOOST_TEST(test_attr("++--**/", MP5 >> '/', c) && c == 6);
}
return boost::report_errors();
}
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