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additionally cover mix-in and cross-casting cases

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This commit is contained in:
Fischlurch 2015-04-26 04:28:32 +02:00
parent 0413d2b8b3
commit 2aeb18c118
1 changed files with 13 additions and 1 deletions
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14
tests/library/meta/access-casted-test.cpp
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@ -57,7 +57,13 @@ namespace test {
{
virtual ~E() {};
};
struct F : E {};
struct X {};
struct F
: X
, E
{ };
using lib::test::tyAbbr;
@ -98,6 +104,8 @@ namespace test {
F f;
E& rEF = f;
E* pEF = &f;
X* pXF = &f;
F* pF = &f;
cout << "can_downcast<B,D> = " << can_downcast<B,D>::value <<endl;
cout << "can_downcast<B*,D*> = " << can_downcast<B*,D*>::value <<endl;
@ -216,6 +224,10 @@ namespace test {
cout << "Access(E(F)* as F*) --->" << AccessCasted<F*>::access(pEF) <<endl;
cout << "Access(E(F)* as F&) --->" << AccessCasted<F&>::access(pEF) <<endl;
cout << "Access(E(F)& as F*) --->" << AccessCasted<F*>::access(pEF) <<endl;
cout << "Access(F* as X*) --->" << AccessCasted<X*>::access(pF) <<endl; // upcast to the other mixin is OK
cout << "Access(F* as X*) --->" << AccessCasted<X*>::access(pXF) <<endl; //
// AccessCasted<X*>::access(pEF); // cross-cast not supported (to complicated to implement)
// AccessCasted<F*>::access(pXF); // downcast not possible, since X does not provide RTTI
}
};