91 lines
1.8 KiB
C++
91 lines
1.8 KiB
C++
//-----------------------------------------------------------------------------
|
|
// boost-libs variant/test/test5.cpp header file
|
|
// See http://www.boost.org for updates, documentation, and revision history.
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Copyright (c) 2003
|
|
// Eric Friedman, Itay Maman
|
|
//
|
|
// 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/core/lightweight_test.hpp"
|
|
#include "boost/variant.hpp"
|
|
|
|
#include "jobs.h"
|
|
|
|
#include <assert.h>
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
|
|
void run()
|
|
{
|
|
using std::string;
|
|
using boost::variant;
|
|
using boost::apply_visitor;
|
|
|
|
typedef variant<int, float, unsigned short, unsigned char> t_var1;
|
|
typedef variant<int, t_var1, unsigned short, unsigned char> t_var2;
|
|
typedef variant<string, int, t_var2> t_var3;
|
|
|
|
t_var1 v1;
|
|
t_var2 v2;
|
|
t_var2 v2_second;
|
|
t_var3 v3;
|
|
|
|
const char c0 = 'x';
|
|
v1 = c0;
|
|
|
|
//v2 and v3 are holding (aka: containing) a variant
|
|
v2 = v1;
|
|
v3 = v2;
|
|
|
|
verify(v1, spec<int>());
|
|
verify(v2, spec<t_var1>());
|
|
verify(v3, spec<t_var2>());
|
|
|
|
|
|
//
|
|
// assignment from const char (Converted to int)
|
|
//
|
|
v2 = c0;
|
|
v3 = c0;
|
|
|
|
verify(v2, spec<int>());
|
|
verify(v3, spec<int>());
|
|
|
|
|
|
BOOST_TEST(apply_visitor(sum_int(), v2) == c0);
|
|
BOOST_TEST(apply_visitor(sum_int(), v3) == c0);
|
|
|
|
sum_int adder;
|
|
apply_visitor(adder, v2);
|
|
apply_visitor(adder, v3);
|
|
|
|
BOOST_TEST(adder.result() == 2*c0);
|
|
|
|
//
|
|
// A variant holding a variant
|
|
//
|
|
typedef variant<unsigned char, float> t_var4;
|
|
typedef variant<string, t_var4> t_var5;
|
|
|
|
t_var4 v4;
|
|
t_var5 v5;
|
|
|
|
v5 = 22.5f;
|
|
verify(v5, spec<t_var4>(), "[V] [V] 22.5");
|
|
}
|
|
|
|
|
|
|
|
int main()
|
|
{
|
|
run();
|
|
return boost::report_errors();
|
|
}
|
|
|