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fix static_shared_vector_cast<>() no-op casting

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Turns out that Enablers as typically used for
member functions don't work to select
constructors.

Move this selection logic to
struct detail::static_shared_vector_caster<>
to correctly allow no-op casts (eg. void to void).
Previously this would not compile.

Allows PVScalarArray getAs() and putFrom() using
shared_vector<const void>.
This commit is contained in:
Michael Davidsaver
2016-02-24 10:18:47 -05:00
parent 4f499aed01
commit dc94b26e50
3 changed files with 108 additions and 25 deletions
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24
testApp/pv/testPVScalarArray.cpp
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@@ -177,11 +177,32 @@ static void testShare()
testOk1(!cdata.unique());
}
static void testVoid()
{
testDiag("Check PVScalarArray put/get from void");
PVIntArrayPtr iarr = static_pointer_cast<PVIntArray>(getPVDataCreate()->createPVScalarArray(pvInt));
PVIntArray::const_svector idata(4, 1);
iarr->PVScalarArray::putFrom(idata);
idata.clear();
shared_vector<const void> cvbuf;
iarr->PVScalarArray::getAs(cvbuf);
idata = static_shared_vector_cast<const PVIntArray::value_type>(cvbuf);
testOk1(idata.size()==4);
iarr->PVScalarArray::putFrom(cvbuf);
testOk1(iarr->getLength()==4);
}
} // end namespace
MAIN(testPVScalarArray)
{
testPlan(156);
testPlan(158);
testFactory();
testBasic<PVByteArray>();
testBasic<PVUByteArray>();
@@ -189,5 +210,6 @@ MAIN(testPVScalarArray)
testBasic<PVDoubleArray>();
testBasic<PVStringArray>();
testShare();
testVoid();
return testDone();
}