1 | /* |
2 | * Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org) |
3 | * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
18 | * USA |
19 | * |
20 | */ |
21 | |
22 | #include "config.h" |
23 | #include "NumberConstructor.h" |
24 | |
25 | #include "NumberObject.h" |
26 | #include "NumberPrototype.h" |
27 | |
28 | namespace JSC { |
29 | |
30 | ASSERT_CLASS_FITS_IN_CELL(NumberConstructor); |
31 | |
32 | static JSValue numberConstructorNaNValue(ExecState*, const Identifier&, const PropertySlot&); |
33 | static JSValue numberConstructorNegInfinity(ExecState*, const Identifier&, const PropertySlot&); |
34 | static JSValue numberConstructorPosInfinity(ExecState*, const Identifier&, const PropertySlot&); |
35 | static JSValue numberConstructorMaxValue(ExecState*, const Identifier&, const PropertySlot&); |
36 | static JSValue numberConstructorMinValue(ExecState*, const Identifier&, const PropertySlot&); |
37 | |
38 | } // namespace JSC |
39 | |
40 | #include "NumberConstructor.lut.h" |
41 | |
42 | namespace JSC { |
43 | |
44 | const ClassInfo NumberConstructor::info = { .className: "Function" , .parentClass: &InternalFunction::info, .staticPropHashTable: 0, .classPropHashTableGetterFunction: ExecState::numberTable }; |
45 | |
46 | /* Source for NumberConstructor.lut.h |
47 | @begin numberTable |
48 | NaN numberConstructorNaNValue DontEnum|DontDelete|ReadOnly |
49 | NEGATIVE_INFINITY numberConstructorNegInfinity DontEnum|DontDelete|ReadOnly |
50 | POSITIVE_INFINITY numberConstructorPosInfinity DontEnum|DontDelete|ReadOnly |
51 | MAX_VALUE numberConstructorMaxValue DontEnum|DontDelete|ReadOnly |
52 | MIN_VALUE numberConstructorMinValue DontEnum|DontDelete|ReadOnly |
53 | @end |
54 | */ |
55 | |
56 | NumberConstructor::NumberConstructor(ExecState* exec, NonNullPassRefPtr<Structure> structure, NumberPrototype* numberPrototype) |
57 | : InternalFunction(&exec->globalData(), structure, Identifier(exec, numberPrototype->info.className)) |
58 | { |
59 | // Number.Prototype |
60 | putDirectWithoutTransition(propertyName: exec->propertyNames().prototype, value: numberPrototype, attributes: DontEnum | DontDelete | ReadOnly); |
61 | |
62 | // no. of arguments for constructor |
63 | putDirectWithoutTransition(propertyName: exec->propertyNames().length, value: jsNumber(exec, i: 1), attributes: ReadOnly | DontEnum | DontDelete); |
64 | } |
65 | |
66 | bool NumberConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot) |
67 | { |
68 | return getStaticValueSlot<NumberConstructor, InternalFunction>(exec, table: ExecState::numberTable(callFrame: exec), thisObj: this, propertyName, slot); |
69 | } |
70 | |
71 | bool NumberConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor) |
72 | { |
73 | return getStaticValueDescriptor<NumberConstructor, InternalFunction>(exec, table: ExecState::numberTable(callFrame: exec), thisObj: this, propertyName, descriptor); |
74 | } |
75 | |
76 | static JSValue numberConstructorNaNValue(ExecState* exec, const Identifier&, const PropertySlot&) |
77 | { |
78 | return jsNaN(exec); |
79 | } |
80 | |
81 | static JSValue numberConstructorNegInfinity(ExecState* exec, const Identifier&, const PropertySlot&) |
82 | { |
83 | return jsNumber(exec, d: -Inf); |
84 | } |
85 | |
86 | static JSValue numberConstructorPosInfinity(ExecState* exec, const Identifier&, const PropertySlot&) |
87 | { |
88 | return jsNumber(exec, d: Inf); |
89 | } |
90 | |
91 | static JSValue numberConstructorMaxValue(ExecState* exec, const Identifier&, const PropertySlot&) |
92 | { |
93 | return jsNumber(exec, d: 1.7976931348623157E+308); |
94 | } |
95 | |
96 | static JSValue numberConstructorMinValue(ExecState* exec, const Identifier&, const PropertySlot&) |
97 | { |
98 | return jsNumber(exec, d: 5E-324); |
99 | } |
100 | |
101 | // ECMA 15.7.1 |
102 | static JSObject* constructWithNumberConstructor(ExecState* exec, JSObject*, const ArgList& args) |
103 | { |
104 | NumberObject* object = new (exec) NumberObject(exec->lexicalGlobalObject()->numberObjectStructure()); |
105 | double n = args.isEmpty() ? 0 : args.at(idx: 0).toNumber(exec); |
106 | object->setInternalValue(jsNumber(exec, d: n)); |
107 | return object; |
108 | } |
109 | |
110 | ConstructType NumberConstructor::getConstructData(ConstructData& constructData) |
111 | { |
112 | constructData.native.function = constructWithNumberConstructor; |
113 | return ConstructTypeHost; |
114 | } |
115 | |
116 | // ECMA 15.7.2 |
117 | static JSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec, JSObject*, JSValue, const ArgList& args) |
118 | { |
119 | return jsNumber(exec, d: args.isEmpty() ? 0 : args.at(idx: 0).toNumber(exec)); |
120 | } |
121 | |
122 | CallType NumberConstructor::getCallData(CallData& callData) |
123 | { |
124 | callData.native.function = callNumberConstructor; |
125 | return CallTypeHost; |
126 | } |
127 | |
128 | } // namespace JSC |
129 | |