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/*
* Copyright 2017 Piotr Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "vbscript.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
typedef struct {
IEnumVARIANT IEnumVARIANT_iface;
LONG ref;
SAFEARRAY *sa;
ULONG i, size;
} safearray_iter;
static inline safearray_iter *impl_from_IEnumVARIANT(IEnumVARIANT *iface)
{
return CONTAINING_RECORD(iface, safearray_iter, IEnumVARIANT_iface);
}
static HRESULT WINAPI safearray_iter_IEnumVARIANT_QueryInterface(
IEnumVARIANT *iface, REFIID riid, void **ppv)
{
safearray_iter *This = impl_from_IEnumVARIANT(iface);
if(IsEqualGUID(riid, &IID_IUnknown)) {
TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
*ppv = &This->IEnumVARIANT_iface;
}else if(IsEqualGUID(riid, &IID_IEnumVARIANT)) {
TRACE("(%p)->(IID_IEnumVARIANT %p)\n", This, ppv);
*ppv = &This->IEnumVARIANT_iface;
}else {
FIXME("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI safearray_iter_IEnumVARIANT_AddRef(IEnumVARIANT *iface)
{
safearray_iter *This = impl_from_IEnumVARIANT(iface);
LONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
return ref;
}
static ULONG WINAPI safearray_iter_IEnumVARIANT_Release(IEnumVARIANT *iface)
{
safearray_iter *This = impl_from_IEnumVARIANT(iface);
LONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) ref=%d\n", iface, ref);
if(!ref) {
if(This->sa)
SafeArrayUnlock(This->sa);
heap_free(This);
}
return ref;
}
static HRESULT WINAPI safearray_iter_IEnumVARIANT_Next(IEnumVARIANT *iface,
ULONG celt, VARIANT *rgVar, ULONG *pCeltFetched)
{
safearray_iter *This = impl_from_IEnumVARIANT(iface);
HRESULT hres;
VARIANT *v;
TRACE("(%p)->(%u %p %p)\n", This, celt, rgVar, pCeltFetched);
if(celt != 1) {
FIXME("celt != 1\n");
return E_NOTIMPL;
}
if(This->i >= This->size) {
if(pCeltFetched)
*pCeltFetched = 0;
return S_FALSE;
}
if(!This->sa->cLocks)
ERR("SAFEARRAY not locked\n");
v = (VARIANT*)(((BYTE*)This->sa->pvData) + This->i * This->sa->cbElements);
V_VT(rgVar) = VT_EMPTY;
hres = VariantCopy(rgVar, v);
if(FAILED(hres))
return hres;
This->i++;
if(pCeltFetched)
*pCeltFetched = 1;
return S_OK;
}
static HRESULT WINAPI safearray_iter_IEnumVARIANT_Skip(IEnumVARIANT *iface, ULONG celt)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT WINAPI safearray_iter_IEnumVARIANT_Reset(IEnumVARIANT *iface)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT WINAPI safearray_iter_IEnumVARIANT_Clone(
IEnumVARIANT *iface, IEnumVARIANT **ppEnum)
{
FIXME("\n");
return E_NOTIMPL;
}
static const IEnumVARIANTVtbl safearray_iter_EnumVARIANTVtbl = {
safearray_iter_IEnumVARIANT_QueryInterface,
safearray_iter_IEnumVARIANT_AddRef,
safearray_iter_IEnumVARIANT_Release,
safearray_iter_IEnumVARIANT_Next,
safearray_iter_IEnumVARIANT_Skip,
safearray_iter_IEnumVARIANT_Reset,
safearray_iter_IEnumVARIANT_Clone
};
static ULONG get_safearray_size(SAFEARRAY *sa)
{
ULONG ret = 1;
USHORT i;
if(!sa)
return 0;
for(i=0; i<sa->cDims && ret; i++)
ret *= sa->rgsabound[i].cElements;
return ret;
}
HRESULT create_safearray_iter(SAFEARRAY *sa, IEnumVARIANT **ev)
{
safearray_iter *iter;
HRESULT hres;
if(sa && !(sa->fFeatures & FADF_VARIANT)) {
FIXME("enumeration not supported: %x\n", sa->fFeatures);
return E_NOTIMPL;
}
iter = heap_alloc(sizeof(*iter));
if(!iter)
return E_OUTOFMEMORY;
if(sa) {
hres = SafeArrayLock(sa);
if(FAILED(hres)) {
heap_free(iter);
return hres;
}
}
iter->IEnumVARIANT_iface.lpVtbl = &safearray_iter_EnumVARIANTVtbl;
iter->ref = 1;
iter->sa = sa;
iter->i = 0;
iter->size = get_safearray_size(sa);
*ev = &iter->IEnumVARIANT_iface;
return S_OK;
}
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