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accessible/src/windows/msaa/IUnknownImpl.h@6474c204b198 (annotated)

accessible/src/windows/msaa/IUnknownImpl.h

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* vim: set ts=2 et sw=2 tw=80: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. *
michael@0	6	*/
michael@0	7
michael@0	8	#ifndef mozilla_a11y_IUnknownImpl_h_
michael@0	9	#define mozilla_a11y_IUnknownImpl_h_
michael@0	10
michael@0	11	#include <windows.h>
michael@0	12	#undef CreateEvent // thank you windows you're such a helper
michael@0	13	#include "nsError.h"
michael@0	14
michael@0	15	// Avoid warning C4509 like "nonstandard extension used:
michael@0	16	// 'AccessibleWrap::[acc_getName]' uses SEH and 'name' has destructor.
michael@0	17	// At this point we're catching a crash which is of much greater
michael@0	18	// importance than the missing dereference for the nsCOMPtr<>
michael@0	19	#ifdef _MSC_VER
michael@0	20	#pragma warning( disable : 4509 )
michael@0	21	#endif
michael@0	22
michael@0	23	namespace mozilla {
michael@0	24	namespace a11y {
michael@0	25
michael@0	26	class AutoRefCnt
michael@0	27	{
michael@0	28	public:
michael@0	29	AutoRefCnt() : mValue(0) {}
michael@0	30
michael@0	31	ULONG operator++() { return ++mValue; }
michael@0	32	ULONG operator--() { return --mValue; }
michael@0	33	ULONG operator++(int) { return ++mValue; }
michael@0	34	ULONG operator--(int) { return --mValue; }
michael@0	35
michael@0	36	operator ULONG() const { return mValue; }
michael@0	37
michael@0	38	private:
michael@0	39	ULONG mValue;
michael@0	40	};
michael@0	41
michael@0	42	} // namespace a11y
michael@0	43	} // namespace mozilla
michael@0	44
michael@0	45	#define DECL_IUNKNOWN \
michael@0	46	public: \
michael@0	47	virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, void**); \
michael@0	48	virtual ULONG STDMETHODCALLTYPE AddRef() MOZ_FINAL \
michael@0	49	{ \
michael@0	50	MOZ_ASSERT(int32_t(mRefCnt) >= 0, "illegal refcnt"); \
michael@0	51	++mRefCnt; \
michael@0	52	return mRefCnt; \
michael@0	53	} \
michael@0	54	virtual ULONG STDMETHODCALLTYPE Release() MOZ_FINAL \
michael@0	55	{ \
michael@0	56	MOZ_ASSERT(int32_t(mRefCnt) > 0, "dup release"); \
michael@0	57	--mRefCnt; \
michael@0	58	if (mRefCnt) \
michael@0	59	return mRefCnt; \
michael@0	60	\
michael@0	61	delete this; \
michael@0	62	return 0; \
michael@0	63	} \
michael@0	64	private: \
michael@0	65	mozilla::a11y::AutoRefCnt mRefCnt; \
michael@0	66	public:
michael@0	67
michael@0	68	#define DECL_IUNKNOWN_INHERITED \
michael@0	69	public: \
michael@0	70	virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID, void**); \
michael@0	71
michael@0	72	#define IMPL_IUNKNOWN_QUERY_HEAD(Class) \
michael@0	73	STDMETHODIMP \
michael@0	74	Class::QueryInterface(REFIID aIID, void** aInstancePtr) \
michael@0	75	{ \
michael@0	76	A11Y_TRYBLOCK_BEGIN \
michael@0	77	if (!aInstancePtr) \
michael@0	78	return E_INVALIDARG; \
michael@0	79	*aInstancePtr = nullptr; \
michael@0	80	\
michael@0	81	HRESULT hr = E_NOINTERFACE;
michael@0	82
michael@0	83	#define IMPL_IUNKNOWN_QUERY_TAIL \
michael@0	84	return hr; \
michael@0	85	A11Y_TRYBLOCK_END \
michael@0	86	}
michael@0	87
michael@0	88	#define IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(Member) \
michael@0	89	return Member->QueryInterface(aIID, aInstancePtr); \
michael@0	90	A11Y_TRYBLOCK_END \
michael@0	91	}
michael@0	92
michael@0	93	#define IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(BaseClass) \
michael@0	94	return BaseClass::QueryInterface(aIID, aInstancePtr); \
michael@0	95	A11Y_TRYBLOCK_END \
michael@0	96	}
michael@0	97
michael@0	98	#define IMPL_IUNKNOWN_QUERY_IFACE(Iface) \
michael@0	99	if (aIID == IID_##Iface) { \
michael@0	100	*aInstancePtr = static_cast<Iface*>(this); \
michael@0	101	AddRef(); \
michael@0	102	return S_OK; \
michael@0	103	}
michael@0	104
michael@0	105	#define IMPL_IUNKNOWN_QUERY_IFACE_AMBIGIOUS(Iface, aResolveIface) \
michael@0	106	if (aIID == IID_##Iface) { \
michael@0	107	*aInstancePtr = static_cast<Iface*>(static_cast<aResolveIface*>(this)); \
michael@0	108	AddRef(); \
michael@0	109	return S_OK; \
michael@0	110	}
michael@0	111
michael@0	112	#define IMPL_IUNKNOWN_QUERY_CLASS(Class) \
michael@0	113	hr = Class::QueryInterface(aIID, aInstancePtr); \
michael@0	114	if (SUCCEEDED(hr)) \
michael@0	115	return hr;
michael@0	116
michael@0	117	#define IMPL_IUNKNOWN_QUERY_CLASS_COND(Class, Cond) \
michael@0	118	if (Cond) { \
michael@0	119	hr = Class::QueryInterface(aIID, aInstancePtr); \
michael@0	120	if (SUCCEEDED(hr)) \
michael@0	121	return hr; \
michael@0	122	}
michael@0	123
michael@0	124	#define IMPL_IUNKNOWN_QUERY_AGGR_COND(Member, Cond) \
michael@0	125	if (Cond) { \
michael@0	126	hr = Member->QueryInterface(aIID, aInstancePtr); \
michael@0	127	if (SUCCEEDED(hr)) \
michael@0	128	return hr; \
michael@0	129	}
michael@0	130
michael@0	131	#define IMPL_IUNKNOWN1(Class, I1) \
michael@0	132	IMPL_IUNKNOWN_QUERY_HEAD(Class) \
michael@0	133	IMPL_IUNKNOWN_QUERY_IFACE(I1); \
michael@0	134	IMPL_IUNKNOWN_QUERY_IFACE(IUnknown); \
michael@0	135	IMPL_IUNKNOWN_QUERY_TAIL \
michael@0	136
michael@0	137	#define IMPL_IUNKNOWN2(Class, I1, I2) \
michael@0	138	IMPL_IUNKNOWN_QUERY_HEAD(Class) \
michael@0	139	IMPL_IUNKNOWN_QUERY_IFACE(I1); \
michael@0	140	IMPL_IUNKNOWN_QUERY_IFACE(I2); \
michael@0	141	IMPL_IUNKNOWN_QUERY_IFACE_AMBIGIOUS(IUnknown, I1); \
michael@0	142	IMPL_IUNKNOWN_QUERY_TAIL \
michael@0	143
michael@0	144	#define IMPL_IUNKNOWN_INHERITED1(Class, Super0, Super1) \
michael@0	145	IMPL_IUNKNOWN_QUERY_HEAD(Class) \
michael@0	146	IMPL_IUNKNOWN_QUERY_CLASS(Super1); \
michael@0	147	IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(Super0)
michael@0	148
michael@0	149	#define IMPL_IUNKNOWN_INHERITED2(Class, Super0, Super1, Super2) \
michael@0	150	IMPL_IUNKNOWN_QUERY_HEAD(Class) \
michael@0	151	IMPL_IUNKNOWN_QUERY_CLASS(Super1); \
michael@0	152	IMPL_IUNKNOWN_QUERY_CLASS(Super2); \
michael@0	153	IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(Super0)
michael@0	154
michael@0	155
michael@0	156	/**
michael@0	157	* Wrap every method body by these macroses to pass exception to the crash
michael@0	158	* reporter.
michael@0	159	*/
michael@0	160	#define A11Y_TRYBLOCK_BEGIN \
michael@0	161	MOZ_SEH_TRY {
michael@0	162
michael@0	163	#define A11Y_TRYBLOCK_END \
michael@0	164	} MOZ_SEH_EXCEPT(mozilla::a11y::FilterExceptions(::GetExceptionCode(), \
michael@0	165	GetExceptionInformation())) \
michael@0	166	{ } \
michael@0	167	return E_FAIL;
michael@0	168
michael@0	169
michael@0	170	namespace mozilla {
michael@0	171	namespace a11y {
michael@0	172
michael@0	173	/**
michael@0	174	* Converts nsresult to HRESULT.
michael@0	175	*/
michael@0	176	HRESULT GetHRESULT(nsresult aResult);
michael@0	177
michael@0	178	/**
michael@0	179	* Used to pass an exception to the crash reporter.
michael@0	180	*/
michael@0	181	int FilterExceptions(unsigned int aCode, EXCEPTION_POINTERS* aExceptionInfo);
michael@0	182
michael@0	183	} // namespace a11y;
michael@0	184	} //namespace mozilla;
michael@0	185
michael@0	186	#endif