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
|
/*
* Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)
* Copyright (C) 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 Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
*/
#include "config.h"
#include "NumberConstructor.h"
#include "Lookup.h"
#include "NumberObject.h"
#include "NumberPrototype.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(NumberConstructor);
static JSValue numberConstructorNaNValue(ExecState*, JSValue, const Identifier&);
static JSValue numberConstructorNegInfinity(ExecState*, JSValue, const Identifier&);
static JSValue numberConstructorPosInfinity(ExecState*, JSValue, const Identifier&);
static JSValue numberConstructorMaxValue(ExecState*, JSValue, const Identifier&);
static JSValue numberConstructorMinValue(ExecState*, JSValue, const Identifier&);
} // namespace JSC
#include "NumberConstructor.lut.h"
namespace JSC {
const ClassInfo NumberConstructor::info = { "Function", &InternalFunction::info, 0, ExecState::numberTable };
/* Source for NumberConstructor.lut.h
@begin numberTable
NaN numberConstructorNaNValue DontEnum|DontDelete|ReadOnly
NEGATIVE_INFINITY numberConstructorNegInfinity DontEnum|DontDelete|ReadOnly
POSITIVE_INFINITY numberConstructorPosInfinity DontEnum|DontDelete|ReadOnly
MAX_VALUE numberConstructorMaxValue DontEnum|DontDelete|ReadOnly
MIN_VALUE numberConstructorMinValue DontEnum|DontDelete|ReadOnly
@end
*/
NumberConstructor::NumberConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, NumberPrototype* numberPrototype)
: InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, numberPrototype->info.className))
{
// Number.Prototype
putDirectWithoutTransition(exec->propertyNames().prototype, numberPrototype, DontEnum | DontDelete | ReadOnly);
// no. of arguments for constructor
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);
}
bool NumberConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
{
return getStaticValueSlot<NumberConstructor, InternalFunction>(exec, ExecState::numberTable(exec), this, propertyName, slot);
}
bool NumberConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
return getStaticValueDescriptor<NumberConstructor, InternalFunction>(exec, ExecState::numberTable(exec), this, propertyName, descriptor);
}
static JSValue numberConstructorNaNValue(ExecState* exec, JSValue, const Identifier&)
{
return jsNaN(exec);
}
static JSValue numberConstructorNegInfinity(ExecState* exec, JSValue, const Identifier&)
{
return jsNumber(exec, -Inf);
}
static JSValue numberConstructorPosInfinity(ExecState* exec, JSValue, const Identifier&)
{
return jsNumber(exec, Inf);
}
static JSValue numberConstructorMaxValue(ExecState* exec, JSValue, const Identifier&)
{
return jsNumber(exec, 1.7976931348623157E+308);
}
static JSValue numberConstructorMinValue(ExecState* exec, JSValue, const Identifier&)
{
return jsNumber(exec, 5E-324);
}
// ECMA 15.7.1
static EncodedJSValue JSC_HOST_CALL constructWithNumberConstructor(ExecState* exec)
{
NumberObject* object = new (exec) NumberObject(exec->lexicalGlobalObject()->numberObjectStructure());
double n = exec->argumentCount() ? exec->argument(0).toNumber(exec) : 0;
object->setInternalValue(jsNumber(exec, n));
return JSValue::encode(object);
}
ConstructType NumberConstructor::getConstructData(ConstructData& constructData)
{
constructData.native.function = constructWithNumberConstructor;
return ConstructTypeHost;
}
// ECMA 15.7.2
static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
{
return JSValue::encode(jsNumber(exec, !exec->argumentCount() ? 0 : exec->argument(0).toNumber(exec)));
}
CallType NumberConstructor::getCallData(CallData& callData)
{
callData.native.function = callNumberConstructor;
return CallTypeHost;
}
} // namespace JSC
|
