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
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
|
/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003, 2004, 2005, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef JSNumberCell_h
#define JSNumberCell_h
#include "CallFrame.h"
#include "JSCell.h"
#include "JSImmediate.h"
#include "Collector.h"
#include "UString.h"
#include <stddef.h> // for size_t
namespace JSC {
extern const double NaN;
extern const double Inf;
#if USE(JSVALUE32)
JSValue jsNumberCell(ExecState*, double);
class Identifier;
class JSCell;
class JSObject;
class JSString;
class PropertySlot;
struct ClassInfo;
struct Instruction;
class JSNumberCell : public JSCell {
friend class JIT;
friend JSValue jsNumberCell(JSGlobalData*, double);
friend JSValue jsNumberCell(ExecState*, double);
public:
double value() const { return m_value; }
virtual JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
virtual bool getPrimitiveNumber(ExecState*, double& number, JSValue& value);
virtual bool toBoolean(ExecState*) const;
virtual double toNumber(ExecState*) const;
virtual UString toString(ExecState*) const;
virtual JSObject* toObject(ExecState*) const;
virtual UString toThisString(ExecState*) const;
virtual JSObject* toThisObject(ExecState*) const;
virtual JSValue getJSNumber();
void* operator new(size_t size, ExecState* exec)
{
#ifdef JAVASCRIPTCORE_BUILDING_ALL_IN_ONE_FILE
return exec->heap()->inlineAllocateNumber(size);
#else
return exec->heap()->allocateNumber(size);
#endif
}
void* operator new(size_t size, JSGlobalData* globalData)
{
#ifdef JAVASCRIPTCORE_BUILDING_ALL_IN_ONE_FILE
return globalData->heap.inlineAllocateNumber(size);
#else
return globalData->heap.allocateNumber(size);
#endif
}
static PassRefPtr<Structure> createStructure(JSValue proto) { return Structure::create(proto, TypeInfo(NumberType, NeedsThisConversion | HasDefaultMark)); }
private:
JSNumberCell(JSGlobalData* globalData, double value)
: JSCell(globalData->numberStructure.get())
, m_value(value)
{
}
JSNumberCell(ExecState* exec, double value)
: JSCell(exec->globalData().numberStructure.get())
, m_value(value)
{
}
virtual bool getUInt32(uint32_t&) const;
double m_value;
};
JSValue jsNumberCell(JSGlobalData*, double);
inline bool isNumberCell(JSValue v)
{
return v.isCell() && v.asCell()->isNumber();
}
inline JSNumberCell* asNumberCell(JSValue v)
{
ASSERT(isNumberCell(v));
return static_cast<JSNumberCell*>(v.asCell());
}
inline JSValue::JSValue(ExecState* exec, double d)
{
JSValue v = JSImmediate::from(d);
*this = v ? v : jsNumberCell(exec, d);
}
inline JSValue::JSValue(ExecState* exec, int i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, unsigned i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, unsigned long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, static_cast<double>(i));
}
inline JSValue::JSValue(ExecState* exec, unsigned long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, static_cast<double>(i));
}
inline JSValue::JSValue(JSGlobalData* globalData, double d)
{
JSValue v = JSImmediate::from(d);
*this = v ? v : jsNumberCell(globalData, d);
}
inline JSValue::JSValue(JSGlobalData* globalData, int i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline JSValue::JSValue(JSGlobalData* globalData, unsigned i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline bool JSValue::isDouble() const
{
return isNumberCell(asValue());
}
inline double JSValue::asDouble() const
{
return asNumberCell(asValue())->value();
}
inline bool JSValue::isNumber() const
{
return JSImmediate::isNumber(asValue()) || isDouble();
}
inline double JSValue::uncheckedGetNumber() const
{
ASSERT(isNumber());
return JSImmediate::isImmediate(asValue()) ? JSImmediate::toDouble(asValue()) : asDouble();
}
#endif // USE(JSVALUE32)
#if USE(JSVALUE64)
inline JSValue::JSValue(ExecState*, double d)
{
JSValue v = JSImmediate::from(d);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, int i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, double d)
{
JSValue v = JSImmediate::from(d);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, int i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, unsigned i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline bool JSValue::isDouble() const
{
return JSImmediate::isDouble(asValue());
}
inline double JSValue::asDouble() const
{
return JSImmediate::doubleValue(asValue());
}
inline bool JSValue::isNumber() const
{
return JSImmediate::isNumber(asValue());
}
inline double JSValue::uncheckedGetNumber() const
{
ASSERT(isNumber());
return JSImmediate::toDouble(asValue());
}
#endif // USE(JSVALUE64)
#if USE(JSVALUE32) || USE(JSVALUE64)
inline JSValue::JSValue(ExecState*, char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, unsigned char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, unsigned short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue jsNaN(ExecState* exec)
{
return jsNumber(exec, NaN);
}
inline JSValue jsNaN(JSGlobalData* globalData)
{
return jsNumber(globalData, NaN);
}
// --- JSValue inlines ----------------------------
ALWAYS_INLINE JSValue JSValue::toJSNumber(ExecState* exec) const
{
return isNumber() ? asValue() : jsNumber(exec, this->toNumber(exec));
}
inline bool JSValue::getNumber(double &result) const
{
if (isInt32())
result = asInt32();
else if (LIKELY(isDouble()))
result = asDouble();
else {
ASSERT(!isNumber());
return false;
}
return true;
}
#endif // USE(JSVALUE32) || USE(JSVALUE64)
} // namespace JSC
#endif // JSNumberCell_h
|
