151 lines
3.2 KiB
C++
151 lines
3.2 KiB
C++
//-----------------------------------------------------------------------------
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// boost-libs variant/test/test1.cpp header file
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// See http://www.boost.org for updates, documentation, and revision history.
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//-----------------------------------------------------------------------------
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//
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// Copyright (c) 2003
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// Eric Friedman, Itay Maman
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include "boost/config.hpp"
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#ifdef BOOST_MSVC
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#pragma warning(disable:4244) // conversion from const int to const short
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#endif
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#include "boost/core/lightweight_test.hpp"
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#include "boost/variant.hpp"
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#include "class_a.h"
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#include "jobs.h"
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#include <iostream>
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#include <string>
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#include <vector>
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void run()
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{
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using boost::apply_visitor;
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using boost::variant;
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using std::string;
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using std::vector;
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using std::cout;
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using std::endl;
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typedef variant< char*, string, short > t_var0;
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typedef variant< int, string, double > t_var1;
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typedef variant< short, const char* > t_var2;
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typedef variant< string, char > t_var3;
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typedef variant< unsigned short, const char* > t_var4;
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typedef variant< unsigned short, const char*, t_var2 > t_var5;
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typedef variant< unsigned short, const char*, t_var5 > t_var6;
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typedef variant< class_a, const void* > t_var7;
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typedef variant< t_var6, int > t_var8;
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typedef variant< t_var8, unsigned short > t_var9;
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typedef variant< char, unsigned char > t_var10;
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typedef variant< short, int, vector<int>, long> t_var11;
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t_var1 v1;
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t_var0 v0;
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t_var2 v2;
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t_var3 v3;
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t_var4 v4;
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t_var5 v5;
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t_var6 v6;
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t_var7 v7;
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t_var8 v8;
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t_var9 v9;
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t_var10 v10;
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t_var11 v11;
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//
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// Check assignment rules
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//
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v2 = 4;
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v4 = v2;
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verify(v4, spec<unsigned short>());
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v2 = "abc";
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v4 = v2;
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verify(v4, spec<const char*>(), "[V] abc");
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v5 = "def";
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verify(v5, spec<const char*>(), "[V] def");
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v5 = v2;
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verify(v5, spec<t_var2>(), "[V] [V] abc");
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v6 = 58;
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verify(v6, spec<unsigned short>(), "[V] 58");
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v6 = v5;
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verify(v6, spec<t_var5>(), "[V] [V] [V] abc");
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v8 = v2;
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verify(v8, spec<t_var6>(), "[V] [V] abc");
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v8 = v6;
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verify(v8, spec<t_var6>(), "[V] [V] [V] [V] abc");
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v7 = v2;
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verify(v7, spec<const void*>());
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v7 = 199;
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verify(v7, spec<class_a>(), "[V] class_a(199)");
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v2 = 200;
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v7 = v2;
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verify(v7, spec<class_a>(), "[V] class_a(200)");
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//
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// Check sizes of held values
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//
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total_sizeof ts;
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v1 = 5.9;
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apply_visitor(ts, v1);
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v1 = 'B';
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apply_visitor(ts, v1);
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v1 = 3.4f;
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apply_visitor(ts, v1);
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BOOST_TEST(ts.result() == sizeof(int) + sizeof(double)*2);
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v11 = 5;
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string res_s = apply_visitor(int_printer(), v11);
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BOOST_TEST(res_s == "5");
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//
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// A variant object holding an std::vector
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//
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vector<int> int_vec_1;
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int_vec_1.push_back(512);
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int_vec_1.push_back(256);
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int_vec_1.push_back(128);
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int_vec_1.push_back(64);
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v11 = int_vec_1;
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res_s = apply_visitor(int_printer(), v11);
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BOOST_TEST(res_s == ",512,256,128,64");
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}
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int main()
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{
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run();
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return boost::report_errors();
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}
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