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- //-----------------------------------------------------------------------------
- // boost-libs variant/test/test1.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/config.hpp"
- #ifdef BOOST_MSVC
- #pragma warning(disable:4244) // conversion from const int to const short
- #endif
- #include "boost/core/lightweight_test.hpp"
- #include "boost/variant.hpp"
- #include "class_a.h"
- #include "jobs.h"
- #include <iostream>
- #include <string>
- #include <vector>
- void run()
- {
- using boost::apply_visitor;
- using boost::variant;
- using std::string;
- using std::vector;
- using std::cout;
- using std::endl;
- typedef variant< char*, string, short > t_var0;
- typedef variant< int, string, double > t_var1;
- typedef variant< short, const char* > t_var2;
- typedef variant< string, char > t_var3;
- typedef variant< unsigned short, const char* > t_var4;
- typedef variant< unsigned short, const char*, t_var2 > t_var5;
- typedef variant< unsigned short, const char*, t_var5 > t_var6;
- typedef variant< class_a, const void* > t_var7;
- typedef variant< t_var6, int > t_var8;
- typedef variant< t_var8, unsigned short > t_var9;
- typedef variant< char, unsigned char > t_var10;
- typedef variant< short, int, vector<int>, long> t_var11;
- t_var1 v1;
- t_var0 v0;
- t_var2 v2;
- t_var3 v3;
- t_var4 v4;
- t_var5 v5;
- t_var6 v6;
- t_var7 v7;
- t_var8 v8;
- t_var9 v9;
- t_var10 v10;
- t_var11 v11;
- //
- // Check assignment rules
- //
- v2 = 4;
- v4 = v2;
- verify(v4, spec<unsigned short>());
- v2 = "abc";
- v4 = v2;
- verify(v4, spec<const char*>(), "[V] abc");
- v5 = "def";
- verify(v5, spec<const char*>(), "[V] def");
- v5 = v2;
- verify(v5, spec<t_var2>(), "[V] [V] abc");
- v6 = 58;
- verify(v6, spec<unsigned short>(), "[V] 58");
- v6 = v5;
- verify(v6, spec<t_var5>(), "[V] [V] [V] abc");
- v8 = v2;
- verify(v8, spec<t_var6>(), "[V] [V] abc");
- v8 = v6;
- verify(v8, spec<t_var6>(), "[V] [V] [V] [V] abc");
- v7 = v2;
- verify(v7, spec<const void*>());
- v7 = 199;
- verify(v7, spec<class_a>(), "[V] class_a(199)");
- v2 = 200;
- v7 = v2;
- verify(v7, spec<class_a>(), "[V] class_a(200)");
- //
- // Check sizes of held values
- //
- total_sizeof ts;
- v1 = 5.9;
- apply_visitor(ts, v1);
- v1 = 'B';
- apply_visitor(ts, v1);
- v1 = 3.4f;
- apply_visitor(ts, v1);
- BOOST_TEST(ts.result() == sizeof(int) + sizeof(double)*2);
- v11 = 5;
- string res_s = apply_visitor(int_printer(), v11);
- BOOST_TEST(res_s == "5");
- //
- // A variant object holding an std::vector
- //
- vector<int> int_vec_1;
- int_vec_1.push_back(512);
- int_vec_1.push_back(256);
- int_vec_1.push_back(128);
- int_vec_1.push_back(64);
- v11 = int_vec_1;
- res_s = apply_visitor(int_printer(), v11);
- BOOST_TEST(res_s == ",512,256,128,64");
- }
- int main()
- {
- run();
- return boost::report_errors();
- }
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