Mypal/xpcom/reflect/xptinfo/xptiTypelibGuts.cpp

75 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Implementation of xptiTypelibGuts. */
#include "xptiprivate.h"
#include "mozilla/XPTInterfaceInfoManager.h"
using namespace mozilla;
// Ensure through static analysis that xptiTypelibGuts won't have a vtable.
template <class T>
class MOZ_NEEDS_NO_VTABLE_TYPE CheckNoVTable
{
};
CheckNoVTable<xptiTypelibGuts> gChecker;
// static
xptiTypelibGuts*
xptiTypelibGuts::Create(XPTHeader* aHeader)
{
NS_ASSERTION(aHeader, "bad param");
size_t n = sizeof(xptiTypelibGuts) +
sizeof(xptiInterfaceEntry*) * (aHeader->num_interfaces - 1);
void* place = XPT_CALLOC8(gXPTIStructArena, n);
if (!place)
return nullptr;
return new(place) xptiTypelibGuts(aHeader);
}
xptiInterfaceEntry*
xptiTypelibGuts::GetEntryAt(uint16_t i)
{
static const nsID zeroIID =
{ 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } };
NS_ASSERTION(mHeader, "bad state");
NS_ASSERTION(i < GetEntryCount(), "bad index");
xptiInterfaceEntry* r = mEntryArray[i];
if (r)
return r;
XPTInterfaceDirectoryEntry* iface = mHeader->interface_directory + i;
XPTInterfaceInfoManager::xptiWorkingSet& set =
XPTInterfaceInfoManager::GetSingleton()->mWorkingSet;
{
ReentrantMonitorAutoEnter monitor(set.mTableReentrantMonitor);
if (iface->iid.Equals(zeroIID))
r = set.mNameTable.Get(iface->name);
else
r = set.mIIDTable.Get(iface->iid);
}
if (r)
SetEntryAt(i, r);
return r;
}
const char*
xptiTypelibGuts::GetEntryNameAt(uint16_t i)
{
NS_ASSERTION(mHeader, "bad state");
NS_ASSERTION(i < GetEntryCount(), "bad index");
XPTInterfaceDirectoryEntry* iface = mHeader->interface_directory + i;
return iface->name;
}