std::string operator()(const std::vector<T>& vec) const
{
std::ostringstream ost;
ost << "( ";
typename std::vector<T>::const_iterator it = vec.begin();
for (; it != vec.end(); ++it)
ost << boost::apply_visitor( vector_printer(), *it );
ost << ") ";
return ost.str();
}
int test_main(int , char* [])
{
typedef boost::make_recursive_variant<
int
, std::vector<boost::recursive_variant_>
>::type var_t;
std::vector<var_t> vec;
vec.push_back(3);
vec.push_back(5);
vec.push_back(vec);
vec.push_back(7);
var_t var(vec);
std::string result( boost::apply_visitor( vector_printer(), var ) );
std::cout << "result: " << result << '\n';
BOOST_CHECK(result == "( 3 5 ( 3 5 ) 7 ) ");
return boost::exit_success;
}
void test_recursive_variant()
{
typedef boost::make_recursive_variant<
int
, std::vector<boost::recursive_variant_>
>::type var1_t;
std::vector<var1_t> vec1;
vec1.push_back(3);
vec1.push_back(5);
vec1.push_back(vec1);
vec1.push_back(7);
var1_t var1(vec1);
std::string result1( boost::apply_visitor( vector_printer(), var1 ) );
std::cout << "result1: " << result1 << '\n';
BOOST_CHECK(result1 == "( 3 5 ( 3 5 ) 7 ) ");
typedef boost::make_recursive_variant<
boost::variant<int, double>
, std::vector<boost::recursive_variant_>
>::type var2_t;
std::vector<var2_t> vec2;
vec2.push_back(boost::variant<int, double>(3));
vec2.push_back(boost::variant<int, double>(3.5));
vec2.push_back(vec2);
vec2.push_back(boost::variant<int, double>(7));
var2_t var2(vec2);
std::string result2( boost::apply_visitor( vector_printer(), var2 ) );
std::cout << "result2: " << result2 << '\n';
BOOST_CHECK(result2 == "( 3 3.5 ( 3 3.5 ) 7 ) ");
typedef boost::make_recursive_variant<
int
, std::vector<
boost::variant<
double
, std::vector<boost::recursive_variant_>
>
>
>::type var3_t;
typedef boost::variant<double, std::vector<var3_t> > var4_t;
std::vector<var3_t> vec3;
vec3.push_back(3);
vec3.push_back(5);
std::vector<var4_t> vec4;
vec4.push_back(3.5);
vec4.push_back(vec3);
vec3.push_back(vec4);
vec3.push_back(7);
var4_t var4(vec3);
std::string result3( boost::apply_visitor( vector_printer(), var4 ) );
std::cout << "result2: " << result3 << '\n';
BOOST_CHECK(result3 == "( 3 5 ( 3.5 ( 3 5 ) ) 7 ) ");
typedef boost::make_recursive_variant<
double,
std::vector<var1_t>
>::type var5_t;
std::vector<var5_t> vec5;
vec5.push_back(3.5);
vec5.push_back(vec1);
vec5.push_back(17.25);
std::string result5( vector_printer()(vec5) );
std::cout << "result5: " << result5 << '\n';
BOOST_CHECK(result5 == "( 3.5 ( 3 5 ( 3 5 ) 7 ) 17.25 ) ");
typedef boost::make_recursive_variant<
int,
std::map<int, boost::recursive_variant_>
>::type var6_t;
var6_t var6;
}
