blob: 48df2283f014eda7258318ce7ca15c70d1c70f0f (
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
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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <private/qv4identifierhash_p.h>
#include <private/qv4identifiertable_p.h>
#include <private/qv4string_p.h>
#include <private/qv4identifierhashdata_p.h>
#include <private/qprimefornumbits_p.h>
QT_BEGIN_NAMESPACE
namespace QV4 {
IdentifierHash::IdentifierHash(ExecutionEngine *engine)
{
d = new IdentifierHashData(engine->identifierTable, 3);
Q_ASSERT(!isEmpty());
}
void IdentifierHash::detach()
{
if (!d || d->refCount.loadAcquire() == 1)
return;
IdentifierHashData *newData = new IdentifierHashData(d);
if (d && !d->refCount.deref())
delete d;
d = newData;
}
inline
IdentifierHashEntry *IdentifierHash::addEntry(PropertyKey identifier)
{
Q_ASSERT(identifier.isStringOrSymbol());
// fill up to max 50%
bool grow = (d->alloc <= d->size*2);
if (grow) {
++d->numBits;
int newAlloc = qPrimeForNumBits(d->numBits);
IdentifierHashEntry *newEntries = (IdentifierHashEntry *)malloc(newAlloc * sizeof(IdentifierHashEntry));
memset(newEntries, 0, newAlloc*sizeof(IdentifierHashEntry));
for (int i = 0; i < d->alloc; ++i) {
const IdentifierHashEntry &e = d->entries[i];
if (!e.identifier.isValid())
continue;
uint idx = e.identifier.id() % newAlloc;
while (newEntries[idx].identifier.isValid()) {
++idx;
idx %= newAlloc;
}
newEntries[idx] = e;
}
free(d->entries);
d->entries = newEntries;
d->alloc = newAlloc;
}
uint idx = identifier.id() % d->alloc;
while (d->entries[idx].identifier.isValid()) {
Q_ASSERT(d->entries[idx].identifier != identifier);
++idx;
idx %= d->alloc;
}
d->entries[idx].identifier = identifier;
++d->size;
return d->entries + idx;
}
inline
const IdentifierHashEntry *IdentifierHash::lookup(PropertyKey identifier) const
{
if (!d || !identifier.isStringOrSymbol())
return nullptr;
Q_ASSERT(d->entries);
uint idx = identifier.id() % d->alloc;
while (1) {
if (!d->entries[idx].identifier.isValid())
return nullptr;
if (d->entries[idx].identifier == identifier)
return d->entries + idx;
++idx;
idx %= d->alloc;
}
}
inline
const IdentifierHashEntry *IdentifierHash::lookup(const QString &str) const
{
if (!d)
return nullptr;
PropertyKey id = d->identifierTable->asPropertyKey(str, IdentifierTable::ForceConversionToId);
return lookup(id);
}
inline
const IdentifierHashEntry *IdentifierHash::lookup(String *str) const
{
if (!d)
return nullptr;
PropertyKey id = d->identifierTable->asPropertyKey(str);
if (id.isValid())
return lookup(id);
return lookup(str->toQString());
}
inline
const PropertyKey IdentifierHash::toIdentifier(const QString &str) const
{
Q_ASSERT(d);
return d->identifierTable->asPropertyKey(str, IdentifierTable::ForceConversionToId);
}
inline
const PropertyKey IdentifierHash::toIdentifier(Heap::String *str) const
{
Q_ASSERT(d);
return d->identifierTable->asPropertyKey(str);
}
QString QV4::IdentifierHash::findId(int value) const
{
IdentifierHashEntry *e = d->entries;
IdentifierHashEntry *end = e + d->alloc;
while (e < end) {
if (e->identifier.isValid() && e->value == value)
return e->identifier.toQString();
++e;
}
return QString();
}
QV4::IdentifierHash::IdentifierHash(const IdentifierHash &other)
{
d = other.d;
if (d)
d->refCount.ref();
}
QV4::IdentifierHash::~IdentifierHash()
{
if (d && !d->refCount.deref())
delete d;
}
IdentifierHash &QV4::IdentifierHash::operator=(const IdentifierHash &other)
{
if (other.d)
other.d->refCount.ref();
if (d && !d->refCount.deref())
delete d;
d = other.d;
return *this;
}
int QV4::IdentifierHash::count() const
{
return d ? d->size : 0;
}
void QV4::IdentifierHash::add(const QString &str, int value)
{
IdentifierHashEntry *e = addEntry(toIdentifier(str));
e->value = value;
}
void QV4::IdentifierHash::add(Heap::String *str, int value)
{
IdentifierHashEntry *e = addEntry(toIdentifier(str));
e->value = value;
}
int QV4::IdentifierHash::value(const QString &str) const
{
const IdentifierHashEntry *e = lookup(str);
return e ? e->value : -1;
}
int QV4::IdentifierHash::value(String *str) const
{
const IdentifierHashEntry *e = lookup(str);
return e ? e->value : -1;
}
}
QT_END_NAMESPACE
|
