1 /*
2 * Copyright (C) 2003-2006, 2008 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21 #include "config.h"
22 #include "JSImmediate.h"
23
24 #include "BooleanConstructor.h"
25 #include "BooleanPrototype.h"
26 #include "Error.h"
27 #include "ExceptionHelpers.h"
28 #include "JSGlobalObject.h"
29 #include "JSNotAnObject.h"
30 #include "NumberConstructor.h"
31 #include "NumberPrototype.h"
32
33 namespace JSC {
34
toThisObject(JSValuePtr v,ExecState * exec)35 JSObject* JSImmediate::toThisObject(JSValuePtr v, ExecState* exec)
36 {
37 ASSERT(isImmediate(v));
38 if (isNumber(v))
39 return constructNumber(exec, v);
40 if (isBoolean(v))
41 return constructBooleanFromImmediateBoolean(exec, v);
42 if (v.isNull())
43 return exec->globalThisValue();
44
45 JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
46 exec->setException(exception);
47 return new (exec) JSNotAnObject(exec, exception);
48 }
49
toObject(JSValuePtr v,ExecState * exec)50 JSObject* JSImmediate::toObject(JSValuePtr v, ExecState* exec)
51 {
52 ASSERT(isImmediate(v));
53 if (isNumber(v))
54 return constructNumber(exec, v);
55 if (isBoolean(v))
56 return constructBooleanFromImmediateBoolean(exec, v);
57
58 JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
59 exec->setException(exception);
60 return new (exec) JSNotAnObject(exec, exception);
61 }
62
prototype(JSValuePtr v,ExecState * exec)63 JSObject* JSImmediate::prototype(JSValuePtr v, ExecState* exec)
64 {
65 ASSERT(isImmediate(v));
66 if (isNumber(v))
67 return exec->lexicalGlobalObject()->numberPrototype();
68 if (isBoolean(v))
69 return exec->lexicalGlobalObject()->booleanPrototype();
70
71 JSNotAnObjectErrorStub* exception = createNotAnObjectErrorStub(exec, v.isNull());
72 exec->setException(exception);
73 return new (exec) JSNotAnObject(exec, exception);
74 }
75
toString(JSValuePtr v)76 UString JSImmediate::toString(JSValuePtr v)
77 {
78 ASSERT(isImmediate(v));
79 if (isIntegerNumber(v))
80 return UString::from(getTruncatedInt32(v));
81 #if USE(ALTERNATE_JSIMMEDIATE)
82 if (isNumber(v)) {
83 ASSERT(isDoubleNumber(v));
84 double value = doubleValue(v);
85 if (value == 0.0) // +0.0 or -0.0
86 return "0";
87 return UString::from(value);
88 }
89 #else
90 ASSERT(!isNumber(v));
91 #endif
92 if (jsBoolean(false) == v)
93 return "false";
94 if (jsBoolean(true) == v)
95 return "true";
96 if (v.isNull())
97 return "null";
98 ASSERT(v.isUndefined());
99 return "undefined";
100 }
101
nonInlineNaN()102 NEVER_INLINE double JSImmediate::nonInlineNaN()
103 {
104 return std::numeric_limits<double>::quiet_NaN();
105 }
106
107 } // namespace JSC
108