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LLVMPDBUtilities.cpp
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LLVMPDBUtilities.cpp
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// LLVMPDBUtilities.cpp : Implementation of CLLVMPDBUtilities
#include "pch.h"
#include "LLVMPDBUtilities.h"
#include "Utilities.h"
// CLLVMPDBUtilities
STDMETHODIMP CLLVMPDBUtilities::InterfaceSupportsErrorInfo(REFIID riid)
{
static const IID* const arr[] =
{
&IID_ILLVMPDBUtilities
};
for (int i=0; i < sizeof(arr) / sizeof(arr[0]); i++)
{
if (InlineIsEqualGUID(*arr[i],riid))
return S_OK;
}
return S_FALSE;
}
STDMETHODIMP CLLVMPDBUtilities::hashTypeRecord(VARIANT Type, ULONG* Res)
{
if (Type.vt != (VT_ARRAY | VT_UI1)) return E_INVALIDARG;
HRESULT hres = SafeArrayLock(Type.parray);
if (FAILED(hres)) return hres;
BOOST_SCOPE_EXIT(&Type) {
SafeArrayUnlock(Type.parray);
} BOOST_SCOPE_EXIT_END
if (SafeArrayGetDim(Type.parray) != 1) return E_INVALIDARG;
LONG l, u;
hres = SafeArrayGetLBound(Type.parray, 1, &l);
if (FAILED(hres)) return hres;
hres = SafeArrayGetUBound(Type.parray, 1, &u);
if (FAILED(hres)) return hres;
codeview::RecordPrefix* prefix = static_cast<codeview::RecordPrefix*>(Type.parray->pvData);
{
// need expected to go out of scope before the unlock label to avoid errors
auto expected = pdb::hashTypeRecord(
codeview::CVType(prefix, u - l + 1));
hres = checkLLVMErrorAndSetCOMError(expected.takeError(), GetObjectCLSID(),
IID_ILLVMPDBUtilities);
if (SUCCEEDED(hres)) *Res = *expected;
}
return hres;
}