summaryrefslogtreecommitdiffstats
path: root/xpcom/glue/nsCOMPtr.cpp
blob: 15eff8f08d1ca68cf9003dc76c9a5c629eef0298 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "nsCOMPtr.h"

nsresult
nsQueryInterface::operator()(const nsIID& aIID, void** aAnswer) const
{
  nsresult status;
  if (mRawPtr) {
    status = mRawPtr->QueryInterface(aIID, aAnswer);
  } else {
    status = NS_ERROR_NULL_POINTER;
  }

  return status;
}

nsresult
nsQueryInterfaceWithError::operator()(const nsIID& aIID, void** aAnswer) const
{
  nsresult status;
  if (mRawPtr) {
    status = mRawPtr->QueryInterface(aIID, aAnswer);
  } else {
    status = NS_ERROR_NULL_POINTER;
  }

  if (mErrorPtr) {
    *mErrorPtr = status;
  }
  return status;
}

void
nsCOMPtr_base::assign_with_AddRef(nsISupports* aRawPtr)
{
  if (aRawPtr) {
    NSCAP_ADDREF(this, aRawPtr);
  }
  assign_assuming_AddRef(aRawPtr);
}

void
nsCOMPtr_base::assign_from_qi(const nsQueryInterface aQI, const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aQI(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_qi_with_error(const nsQueryInterfaceWithError& aQI,
                                         const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aQI(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_gs_cid(const nsGetServiceByCID aGS,
                                  const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aGS(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_gs_cid_with_error(
    const nsGetServiceByCIDWithError& aGS, const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aGS(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_gs_contractid(const nsGetServiceByContractID aGS,
                                         const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aGS(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_gs_contractid_with_error(
    const nsGetServiceByContractIDWithError& aGS, const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aGS(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void
nsCOMPtr_base::assign_from_helper(const nsCOMPtr_helper& aHelper,
                                  const nsIID& aIID)
{
  void* newRawPtr;
  if (NS_FAILED(aHelper(aIID, &newRawPtr))) {
    newRawPtr = nullptr;
  }
  assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
}

void**
nsCOMPtr_base::begin_assignment()
{
  assign_assuming_AddRef(nullptr);
  return reinterpret_cast<void**>(&mRawPtr);
}