Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/accessible/windows/msaa/IUnknownImpl.h b/accessible/windows/msaa/IUnknownImpl.h
new file mode 100644
index 0000000000..7935ebedda
--- /dev/null
+++ b/accessible/windows/msaa/IUnknownImpl.h
@@ -0,0 +1,173 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. *
+ */
+
+#ifndef mozilla_a11y_IUnknownImpl_h_
+#define mozilla_a11y_IUnknownImpl_h_
+
+#include <windows.h>
+#undef CreateEvent  // thank you windows you're such a helper
+#include "nsError.h"
+
+// Avoid warning C4509 like "nonstandard extension used:
+// 'AccessibleWrap::[acc_getName]' uses SEH and 'name' has destructor.
+// At this point we're catching a crash which is of much greater
+// importance than the missing dereference for the nsCOMPtr<>
+#ifdef _MSC_VER
+#  pragma warning(disable : 4509)
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#  define ATTRIBUTE_UNUSED __attribute__((unused))
+#else
+#  define ATTRIBUTE_UNUSED
+#endif
+
+namespace mozilla {
+namespace a11y {
+
+class AutoRefCnt {
+ public:
+  AutoRefCnt() : mValue(0) {}
+
+  ULONG operator++() { return ++mValue; }
+  ULONG operator--() { return --mValue; }
+  ULONG operator++(int) { return ++mValue; }
+  ULONG operator--(int) { return --mValue; }
+
+  operator ULONG() const { return mValue; }
+
+ private:
+  ULONG mValue;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#define DECL_IUNKNOWN                                               \
+ public:                                                            \
+  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, void**); \
+  ULONG STDMETHODCALLTYPE AddRef() override {                       \
+    MOZ_ASSERT(int32_t(mRefCnt) >= 0, "illegal refcnt");            \
+    ++mRefCnt;                                                      \
+    return mRefCnt;                                                 \
+  }                                                                 \
+  ULONG STDMETHODCALLTYPE Release() override {                      \
+    MOZ_ASSERT(int32_t(mRefCnt) > 0, "dup release");                \
+    --mRefCnt;                                                      \
+    if (mRefCnt) return mRefCnt;                                    \
+                                                                    \
+    delete this;                                                    \
+    return 0;                                                       \
+  }                                                                 \
+                                                                    \
+ private:                                                           \
+  mozilla::a11y::AutoRefCnt mRefCnt;                                \
+                                                                    \
+ public:
+
+#define DECL_IUNKNOWN_INHERITED \
+ public:                        \
+  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, void**);
+
+#define IMPL_IUNKNOWN_QUERY_HEAD(Class)                     \
+  STDMETHODIMP                                              \
+  Class::QueryInterface(REFIID aIID, void** aInstancePtr) { \
+    if (!aInstancePtr) return E_INVALIDARG;                 \
+    *aInstancePtr = nullptr;                                \
+                                                            \
+    HRESULT hr ATTRIBUTE_UNUSED = E_NOINTERFACE;
+
+#define IMPL_IUNKNOWN_QUERY_TAIL \
+  return hr;                     \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(Member)  \
+  return Member->QueryInterface(aIID, aInstancePtr); \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(BaseClass)   \
+  return BaseClass::QueryInterface(aIID, aInstancePtr); \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_IFACE(Iface)       \
+  if (aIID == IID_##Iface) {                   \
+    *aInstancePtr = static_cast<Iface*>(this); \
+    AddRef();                                  \
+    return S_OK;                               \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_IFACE_AMBIGIOUS(Iface, aResolveIface)           \
+  if (aIID == IID_##Iface) {                                                \
+    *aInstancePtr = static_cast<Iface*>(static_cast<aResolveIface*>(this)); \
+    AddRef();                                                               \
+    return S_OK;                                                            \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_CLASS(Class)          \
+  hr = Class::QueryInterface(aIID, aInstancePtr); \
+  if (SUCCEEDED(hr)) return hr;
+
+#define IMPL_IUNKNOWN_QUERY_CLASS_COND(Class, Cond) \
+  if (Cond) {                                       \
+    hr = Class::QueryInterface(aIID, aInstancePtr); \
+    if (SUCCEEDED(hr)) return hr;                   \
+  }
+
+#define IMPL_IUNKNOWN_QUERY_AGGR_COND(Member, Cond)  \
+  if (Cond) {                                        \
+    hr = Member->QueryInterface(aIID, aInstancePtr); \
+    if (SUCCEEDED(hr)) return hr;                    \
+  }
+
+#define IMPL_IUNKNOWN1(Class, I1)      \
+  IMPL_IUNKNOWN_QUERY_HEAD(Class)      \
+  IMPL_IUNKNOWN_QUERY_IFACE(I1);       \
+  IMPL_IUNKNOWN_QUERY_IFACE(IUnknown); \
+  IMPL_IUNKNOWN_QUERY_TAIL
+
+#define IMPL_IUNKNOWN2(Class, I1, I2)                \
+  IMPL_IUNKNOWN_QUERY_HEAD(Class)                    \
+  IMPL_IUNKNOWN_QUERY_IFACE(I1);                     \
+  IMPL_IUNKNOWN_QUERY_IFACE(I2);                     \
+  IMPL_IUNKNOWN_QUERY_IFACE_AMBIGIOUS(IUnknown, I1); \
+  IMPL_IUNKNOWN_QUERY_TAIL
+
+#define IMPL_IUNKNOWN_INHERITED1(Class, Super0, Super1) \
+  IMPL_IUNKNOWN_QUERY_HEAD(Class)                       \
+  IMPL_IUNKNOWN_QUERY_CLASS(Super1);                    \
+  IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(Super0)
+
+#define IMPL_IUNKNOWN_INHERITED2(Class, Super0, Super1, Super2) \
+  IMPL_IUNKNOWN_QUERY_HEAD(Class)                               \
+  IMPL_IUNKNOWN_QUERY_CLASS(Super1);                            \
+  IMPL_IUNKNOWN_QUERY_CLASS(Super2);                            \
+  IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(Super0)
+
+/**
+ * Overrides AddRef and Release to call a specific base class.
+ * If you are inheriting a single class (e.g. to override some methods), you
+ * shouldn't need to use this. However, if you are inheriting from a COM
+ * implementation and also inheriting additional COM interfaces, you will need
+ * to use this to specify which base implements reference counting.
+ */
+#define IMPL_IUNKNOWN_REFCOUNTING_INHERITED(BaseClass)                      \
+ public:                                                                    \
+  ULONG STDMETHODCALLTYPE AddRef() override { return BaseClass::AddRef(); } \
+  ULONG STDMETHODCALLTYPE Release() override { return BaseClass::Release(); }
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Converts nsresult to HRESULT.
+ */
+HRESULT GetHRESULT(nsresult aResult);
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif