summaryrefslogtreecommitdiffstats
path: root/xpcom/ds/nsArray.cpp
blob: 60758133d97f4f490d618d635d5bb6da5356e1cc (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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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/. */

#include "nsArray.h"
#include "nsArrayEnumerator.h"
#include "nsThreadUtils.h"

NS_INTERFACE_MAP_BEGIN(nsArray)
  NS_INTERFACE_MAP_ENTRY(nsIArray)
  NS_INTERFACE_MAP_ENTRY(nsIArrayExtensions)
  NS_INTERFACE_MAP_ENTRY(nsIMutableArray)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIMutableArray)
NS_INTERFACE_MAP_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsArrayCC)
  NS_INTERFACE_MAP_ENTRY(nsIArray)
  NS_INTERFACE_MAP_ENTRY(nsIArrayExtensions)
  NS_INTERFACE_MAP_ENTRY(nsIMutableArray)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIMutableArray)
NS_INTERFACE_MAP_END

nsArrayBase::~nsArrayBase() { Clear(); }

NS_IMPL_ADDREF(nsArray)
NS_IMPL_RELEASE(nsArray)

NS_IMPL_CYCLE_COLLECTION_CLASS(nsArrayCC)

NS_IMPL_CYCLE_COLLECTING_ADDREF(nsArrayCC)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsArrayCC)

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsArrayCC)
  tmp->Clear();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsArrayCC)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mArray)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMETHODIMP
nsArrayBase::GetLength(uint32_t* aLength) {
  *aLength = mArray.Count();
  return NS_OK;
}

NS_IMETHODIMP
nsArrayBase::QueryElementAt(uint32_t aIndex, const nsIID& aIID,
                            void** aResult) {
  nsISupports* obj = mArray.SafeObjectAt(aIndex);
  if (!obj) {
    return NS_ERROR_ILLEGAL_VALUE;
  }

  // no need to worry about a leak here, because SafeObjectAt()
  // doesn't addref its result
  return obj->QueryInterface(aIID, aResult);
}

NS_IMETHODIMP
nsArrayBase::IndexOf(uint32_t aStartIndex, nsISupports* aElement,
                     uint32_t* aResult) {
  int32_t idx = mArray.IndexOf(aElement, aStartIndex);
  if (idx == -1) {
    return NS_ERROR_FAILURE;
  }

  *aResult = static_cast<uint32_t>(idx);
  return NS_OK;
}

NS_IMETHODIMP
nsArrayBase::ScriptedEnumerate(const nsIID& aElemIID, uint8_t aArgc,
                               nsISimpleEnumerator** aResult) {
  if (aArgc > 0) {
    return NS_NewArrayEnumerator(aResult, static_cast<nsIArray*>(this),
                                 aElemIID);
  }
  return NS_NewArrayEnumerator(aResult, static_cast<nsIArray*>(this));
}

NS_IMETHODIMP
nsArrayBase::EnumerateImpl(const nsID& aElemIID,
                           nsISimpleEnumerator** aResult) {
  return NS_NewArrayEnumerator(aResult, static_cast<nsIArray*>(this), aElemIID);
}

// nsIMutableArray implementation

NS_IMETHODIMP
nsArrayBase::AppendElement(nsISupports* aElement) {
  bool result = mArray.AppendObject(aElement);
  return result ? NS_OK : NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsArrayBase::RemoveElementAt(uint32_t aIndex) {
  bool result = mArray.RemoveObjectAt(aIndex);
  return result ? NS_OK : NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsArrayBase::InsertElementAt(nsISupports* aElement, uint32_t aIndex) {
  bool result = mArray.InsertObjectAt(aElement, aIndex);
  return result ? NS_OK : NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsArrayBase::ReplaceElementAt(nsISupports* aElement, uint32_t aIndex) {
  mArray.ReplaceObjectAt(aElement, aIndex);
  return NS_OK;
}

NS_IMETHODIMP
nsArrayBase::Clear() {
  mArray.Clear();
  return NS_OK;
}

// nsIArrayExtensions implementation.

NS_IMETHODIMP
nsArrayBase::Count(uint32_t* aResult) { return GetLength(aResult); }

NS_IMETHODIMP
nsArrayBase::GetElementAt(uint32_t aIndex, nsISupports** aResult) {
  nsCOMPtr<nsISupports> obj = mArray.SafeObjectAt(aIndex);
  obj.forget(aResult);
  return NS_OK;
}

nsresult nsArrayBase::XPCOMConstructor(const nsIID& aIID, void** aResult) {
  nsCOMPtr<nsIMutableArray> inst = Create();
  return inst->QueryInterface(aIID, aResult);
}

already_AddRefed<nsIMutableArray> nsArrayBase::Create() {
  nsCOMPtr<nsIMutableArray> inst;
  if (NS_IsMainThread()) {
    inst = new nsArrayCC;
  } else {
    inst = new nsArray;
  }
  return inst.forget();
}