1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkHRESULT_DEFINED
9#define SkHRESULT_DEFINED
10
11#include "SkTypes.h"
12#ifdef SK_BUILD_FOR_WIN
13
14void SkTraceHR(const char* file, unsigned long line,
15               HRESULT hr, const char* msg);
16
17#ifdef SK_DEBUG
18#define SK_TRACEHR(_hr, _msg) SkTraceHR(__FILE__, __LINE__, _hr, _msg)
19#else
20#define SK_TRACEHR(_hr, _msg) sk_ignore_unused_variable(_hr)
21#endif
22
23#define HR_GENERAL(_ex, _msg, _ret) {\
24    HRESULT _hr = _ex;\
25    if (FAILED(_hr)) {\
26        SK_TRACEHR(_hr, _msg);\
27        return _ret;\
28    }\
29}
30
31//@{
32/**
33These macros are for reporting HRESULT errors.
34The expression will be evaluated.
35If the resulting HRESULT SUCCEEDED then execution will continue normally.
36If the HRESULT FAILED then the macro will return from the current function.
37In variants ending with 'M' the given message will be traced when FAILED.
38The HR variants will return the HRESULT when FAILED.
39The HRB variants will return false when FAILED.
40The HRN variants will return NULL when FAILED.
41The HRV variants will simply return when FAILED.
42The HRZ variants will return 0 when FAILED.
43*/
44#define HR(ex) HR_GENERAL(ex, NULL, _hr)
45#define HRM(ex, msg) HR_GENERAL(ex, msg, _hr)
46
47#define HRB(ex) HR_GENERAL(ex, NULL, false)
48#define HRBM(ex, msg) HR_GENERAL(ex, msg, false)
49
50#define HRN(ex) HR_GENERAL(ex, NULL, NULL)
51#define HRNM(ex, msg) HR_GENERAL(ex, msg, NULL)
52
53#define HRV(ex) HR_GENERAL(ex, NULL, )
54#define HRVM(ex, msg) HR_GENERAL(ex, msg, )
55
56#define HRZ(ex) HR_GENERAL(ex, NULL, 0)
57#define HRZM(ex, msg) HR_GENERAL(ex, msg, 0)
58//@}
59#endif  // SK_BUILD_FOR_WIN
60#endif  // SkHRESULT_DEFINED
61