IErrorInfo *COMException::GetErrorInfo()
{
LIMITED_METHOD_CONTRACT;
IErrorInfo *pErrorInfo = m_pErrorInfo;
if (pErrorInfo != NULL)
pErrorInfo->AddRef();
return pErrorInfo;
}
/* Determines whether we can use the error information from the
source object and if so, throws that as an error.
If serr is non-NULL, then the error is not thrown in R
but a COMSErrorInfo object is returned with the information in it.
*/
HRESULT
checkErrorInfo(IUnknown *obj, HRESULT status, SEXP *serr)
{
HRESULT hr;
ISupportErrorInfo *info;
fprintf(stderr, "<checkErrorInfo> %X \n", (unsigned int) status);
if(serr)
*serr = NULL;
hr = obj->QueryInterface(IID_ISupportErrorInfo, (void **)&info);
if(hr != S_OK) {
fprintf(stderr, "No support for ISupportErrorInfo\n");fflush(stderr);
return(hr);
}
info->AddRef();
hr = info->InterfaceSupportsErrorInfo(IID_IDispatch);
info->Release();
if(hr != S_OK) {
fprintf(stderr, "No support for InterfaceSupportsErrorInfo\n");fflush(stderr);
return(hr);
}
IErrorInfo *errorInfo;
hr = GetErrorInfo(0L, &errorInfo);
if(hr != S_OK) {
/* fprintf(stderr, "GetErrorInfo failed\n");fflush(stderr); */
COMError(status);
return(hr);
}
/* So there is some information for us. Use it. */
SEXP klass, ans, tmp;
BSTR ostr;
char *str;
errorInfo->AddRef();
if(serr) {
PROTECT(klass = MAKE_CLASS("SCOMErrorInfo"));
PROTECT(ans = NEW(klass));
PROTECT(tmp = NEW_CHARACTER(1));
errorInfo->GetSource(&ostr);
SET_STRING_ELT(tmp, 0, COPY_TO_USER_STRING(FromBstr(ostr)));
SET_SLOT(ans, Rf_install("source"), tmp);
UNPROTECT(1);
PROTECT(tmp = NEW_CHARACTER(1));
errorInfo->GetDescription(&ostr);
SET_STRING_ELT(tmp, 0, COPY_TO_USER_STRING(str = FromBstr(ostr)));
SET_SLOT(ans, Rf_install("description"), tmp);
UNPROTECT(1);
PROTECT(tmp = NEW_NUMERIC(1));
NUMERIC_DATA(tmp)[0] = status;
SET_SLOT(ans, Rf_install("status"), tmp);
*serr = ans;
UNPROTECT(3);
errorInfo->Release();
PROBLEM "%s", str
WARN;
} else {
errorInfo->GetDescription(&ostr);
str = FromBstr(ostr);
errorInfo->GetSource(&ostr);
errorInfo->Release();
PROBLEM "%s (%s)", str, FromBstr(ostr)
ERROR;
}
return(hr);
}