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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/* -*- 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 "xpcom-config.h"
#include <new>
#include "nscore.h"
#include "nsCRT.h"
#include "nsCommandParams.h"
#include "mozilla/HashFunctions.h"
using namespace mozilla;
const PLDHashTableOps nsCommandParams::sHashOps =
{
HashKey,
HashMatchEntry,
HashMoveEntry,
HashClearEntry
};
NS_IMPL_ISUPPORTS(nsCommandParams, nsICommandParams)
nsCommandParams::nsCommandParams()
: mValuesHash(&sHashOps, sizeof(HashEntry), 2)
{
}
nsCommandParams::~nsCommandParams()
{
}
NS_IMETHODIMP
nsCommandParams::GetValueType(const char* aName, int16_t* aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry) {
*aRetVal = foundEntry->mEntryType;
return NS_OK;
}
*aRetVal = eNoType;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetBooleanValue(const char* aName, bool* aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eBooleanType) {
*aRetVal = foundEntry->mData.mBoolean;
return NS_OK;
}
*aRetVal = false;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetLongValue(const char* aName, int32_t* aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eLongType) {
*aRetVal = foundEntry->mData.mLong;
return NS_OK;
}
*aRetVal = false;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetDoubleValue(const char* aName, double* aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eDoubleType) {
*aRetVal = foundEntry->mData.mDouble;
return NS_OK;
}
*aRetVal = 0.0;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetStringValue(const char* aName, nsAString& aRetVal)
{
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eWStringType) {
NS_ASSERTION(foundEntry->mData.mString, "Null string");
aRetVal.Assign(*foundEntry->mData.mString);
return NS_OK;
}
aRetVal.Truncate();
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetCStringValue(const char* aName, char** aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eStringType) {
NS_ASSERTION(foundEntry->mData.mCString, "Null string");
*aRetVal = ToNewCString(*foundEntry->mData.mCString);
return NS_OK;
}
*aRetVal = nullptr;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::GetISupportsValue(const char* aName, nsISupports** aRetVal)
{
NS_ENSURE_ARG_POINTER(aRetVal);
HashEntry* foundEntry = GetNamedEntry(aName);
if (foundEntry && foundEntry->mEntryType == eISupportsType) {
NS_IF_ADDREF(*aRetVal = foundEntry->mISupports.get());
return NS_OK;
}
*aRetVal = nullptr;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCommandParams::SetBooleanValue(const char* aName, bool aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eBooleanType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mData.mBoolean = aValue;
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::SetLongValue(const char* aName, int32_t aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eLongType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mData.mLong = aValue;
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::SetDoubleValue(const char* aName, double aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eDoubleType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mData.mDouble = aValue;
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::SetStringValue(const char* aName, const nsAString& aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eWStringType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mData.mString = new nsString(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::SetCStringValue(const char* aName, const char* aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eStringType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mData.mCString = new nsCString(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::SetISupportsValue(const char* aName, nsISupports* aValue)
{
HashEntry* foundEntry = GetOrMakeEntry(aName, eISupportsType);
if (!foundEntry) {
return NS_ERROR_OUT_OF_MEMORY;
}
foundEntry->mISupports = aValue; // addrefs
return NS_OK;
}
NS_IMETHODIMP
nsCommandParams::RemoveValue(const char* aName)
{
mValuesHash.Remove((void*)aName);
return NS_OK;
}
nsCommandParams::HashEntry*
nsCommandParams::GetNamedEntry(const char* aName)
{
return static_cast<HashEntry*>(mValuesHash.Search((void*)aName));
}
nsCommandParams::HashEntry*
nsCommandParams::GetOrMakeEntry(const char* aName, uint8_t aEntryType)
{
auto foundEntry = static_cast<HashEntry*>(mValuesHash.Search((void*)aName));
if (foundEntry) { // reuse existing entry
foundEntry->Reset(aEntryType);
return foundEntry;
}
foundEntry = static_cast<HashEntry*>(mValuesHash.Add((void*)aName, fallible));
if (!foundEntry) {
return nullptr;
}
// Use placement new. Our ctor does not clobber keyHash, which is important.
new (foundEntry) HashEntry(aEntryType, aName);
return foundEntry;
}
PLDHashNumber
nsCommandParams::HashKey(const void* aKey)
{
return HashString((const char*)aKey);
}
bool
nsCommandParams::HashMatchEntry(const PLDHashEntryHdr* aEntry, const void* aKey)
{
const char* keyString = (const char*)aKey;
const HashEntry* thisEntry = static_cast<const HashEntry*>(aEntry);
return thisEntry->mEntryName.Equals(keyString);
}
void
nsCommandParams::HashMoveEntry(PLDHashTable* aTable,
const PLDHashEntryHdr* aFrom,
PLDHashEntryHdr* aTo)
{
const HashEntry* fromEntry = static_cast<const HashEntry*>(aFrom);
HashEntry* toEntry = static_cast<HashEntry*>(aTo);
new (toEntry) HashEntry(*fromEntry);
fromEntry->~HashEntry();
}
void
nsCommandParams::HashClearEntry(PLDHashTable* aTable, PLDHashEntryHdr* aEntry)
{
HashEntry* thisEntry = static_cast<HashEntry*>(aEntry);
thisEntry->~HashEntry();
}
|
