#include "nonstd/any.hpp"

#include "nonstd/optional.hpp"

#include "nonstd/variant.hpp"

#include <cassert>

#include <string>

using namespace nonstd;

int main()

{

std::string hello = "hello, world";

{

optional< int > var;

assert( ! var );

var = 7 ; assert( *var == 7 );

var = 7 ; assert( var.value() == 7 );

}{

any var;

assert( ! var.has_value() );

var = 'v' ; assert( any_cast<char>( var ) == 'v' );

var = 7 ; assert( any_cast<int >( var ) == 7 );

var = 42L ; assert( any_cast<long>( var ) == 42L );

var = hello; assert( any_cast<std::string>( var ) == hello );

}{

variant< char, int, long, std::string > var;

assert( ! var.valueless_by_exception() );

assert( get< 0 >( var ) == char() );

var = 'v' ; assert( get<char>( var ) == 'v' );

var = 7 ; assert( get<int >( var ) == 7 );

var = 42L ; assert( get<long>( var ) == 42L );

var = hello; assert( get<std::string>( var ) == hello );

}

}

// cl -nologo -EHsc -I../../any-lite/include -I../../optional-lite/include -I../../variant-lite/include 04-any-optional-variant.cpp && 04-any-optional-variant

// g++ -Wall -I../../any-lite/include -I../../optional-lite/include -I../../variant-lite/include -o 04-any-optional-variant 04-any-optional-variant.cpp && 04-any-optional-variant