69936e7e81
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@35 7ec92016-0320-0410-acc4-a06ded1c099a
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#if defined(_MSC_VER) && _MSC_VER >= 1300
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#pragma warning (disable : 4503 4244)
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#endif
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// 4503: decorated name length exceeded, name was truncated
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// 4244: 'argument' : conversion from '<tyep1>' to '<type2>', possible loss of data
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#include <string>
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#include <cassert>
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#include <iostream>
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#include "Variant.h"
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using namespace std;
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int main()
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{
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try
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{
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typedef Variant<TYPELIST_3(string, int, double)> DBField;
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DBField fld1(string("Hello, world"));
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DBField fld2(25);
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DBField fld3(3.14);
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assert(fld1.TypeId() == typeid(string));
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assert(fld2.TypeId() == typeid(int));
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string* p = fld1.GetPtr<string>();
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assert(p != 0);
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*p += '!';
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assert(fld1.Get<std::string>() == "Hello, world!");
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fld3 = fld1;
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assert(fld1.Get<std::string>() == "Hello, world!");
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assert(fld3.Get<std::string>() == "Hello, world!");
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fld3 = std::string("Assignment");
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assert(fld3.Get<std::string>() == "Assignment");
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DBField fld5;
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assert(fld5.TypeId() == typeid(string));
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assert(fld5.GetPtr<string>()->empty());
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DBField fld4 = fld1;
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assert(fld4.TypeId() == typeid(string));
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assert(fld4.Get<std::string>() == "Hello, world!");
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DBField fld(45);
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float f = fld.ConvertTo<float>();
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assert(f == 45);
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(void)f;
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fld2.ChangeType<double>();
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assert(fld2.Get<double>() == 25);
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typedef Variant<TYPELIST_3(string, int, float)> AlternateDBField;
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AlternateDBField fld6(fld1);
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assert(fld6.Get<std::string>() == "Hello, world!");
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fld6 = fld3;
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assert(fld6.Get<std::string>() == "Assignment");
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#if defined(_MSC_VER) && _MSC_VER >= 1300
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//
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// Variant with VC non-standard alignment support
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//
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typedef TYPELIST_3(string, double, int) DBField2Typelist;
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typedef Variant<DBField2Typelist, VC_AlignedPOD<DBField2Typelist> > AlternateDBField2;
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AlternateDBField2 fld7(fld6);
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assert(fld7.Get<std::string>() == "Assignment");
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fld7 = fld2;
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assert(fld7.Get<double>() == 25.0);
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enum {
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OrigAlign = __alignof(fld1),
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VCExAlign = __alignof(fld7)
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};
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STATIC_CHECK(OrigAlign == VCExAlign, WrongAlignment);
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#endif // def _MSC_VER
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}
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catch (const std::exception& e)
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{
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cout << "Something weird happened: " << e.what();
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}
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catch (...)
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{
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cout << "Something really weird happened.";
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}
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}
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