summaryrefslogtreecommitdiffstats
path: root/Source/JavaScriptCore/runtime/DateConstructor.cpp
blob: 0a061481faf7aec2e49d7ba8ed040e4b2d274b7e (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
191
192
193
194
195
196
197
198
199
200
201
202
/*
 *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
 *  Copyright (C) 2004, 2005, 2006, 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 "DateConstructor.h"

#include "DateConversion.h"
#include "DateInstance.h"
#include "DatePrototype.h"
#include "JSFunction.h"
#include "JSGlobalObject.h"
#include "JSString.h"
#include "JSStringBuilder.h"
#include "ObjectPrototype.h"
#include <math.h>
#include <time.h>
#include <wtf/DateMath.h>
#include <wtf/MathExtras.h>

#if OS(WINCE) && !PLATFORM(QT)
extern "C" time_t time(time_t* timer); // Provided by libce.
#endif

#if HAVE(SYS_TIME_H)
#include <sys/time.h>
#endif

#if HAVE(SYS_TIMEB_H)
#include <sys/timeb.h>
#endif

using namespace WTF;

namespace JSC {

ASSERT_CLASS_FITS_IN_CELL(DateConstructor);

static EncodedJSValue JSC_HOST_CALL dateParse(ExecState*);
static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*);
static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState*);

DateConstructor::DateConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, Structure* functionStructure, DatePrototype* datePrototype)
    : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, datePrototype->classInfo()->className))
{
    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, datePrototype, DontEnum | DontDelete | ReadOnly);

    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().parse, dateParse), DontEnum);
    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 7, exec->propertyNames().UTC, dateUTC), DontEnum);
    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().now, dateNow), DontEnum);

    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(7), ReadOnly | DontEnum | DontDelete);
}

// ECMA 15.9.3
JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
{
    int numArgs = args.size();

    double value;

    if (numArgs == 0) // new Date() ECMA 15.9.3.3
        value = jsCurrentTime();
    else if (numArgs == 1) {
        if (args.at(0).inherits(&DateInstance::s_info))
            value = asDateInstance(args.at(0))->internalNumber();
        else {
            JSValue primitive = args.at(0).toPrimitive(exec);
            if (primitive.isString())
                value = parseDate(exec, primitive.getString(exec));
            else
                value = primitive.toNumber(exec);
        }
    } else {
        double doubleArguments[7] = {
            args.at(0).toNumber(exec), 
            args.at(1).toNumber(exec), 
            args.at(2).toNumber(exec), 
            args.at(3).toNumber(exec), 
            args.at(4).toNumber(exec), 
            args.at(5).toNumber(exec), 
            args.at(6).toNumber(exec)
        };
        if (isnan(doubleArguments[0])
                || isnan(doubleArguments[1])
                || (numArgs >= 3 && isnan(doubleArguments[2]))
                || (numArgs >= 4 && isnan(doubleArguments[3]))
                || (numArgs >= 5 && isnan(doubleArguments[4]))
                || (numArgs >= 6 && isnan(doubleArguments[5]))
                || (numArgs >= 7 && isnan(doubleArguments[6])))
            value = NaN;
        else {
            GregorianDateTime t;
            int year = JSC::toInt32(doubleArguments[0]);
            t.year = (year >= 0 && year <= 99) ? year : year - 1900;
            t.month = JSC::toInt32(doubleArguments[1]);
            t.monthDay = (numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
            t.hour = JSC::toInt32(doubleArguments[3]);
            t.minute = JSC::toInt32(doubleArguments[4]);
            t.second = JSC::toInt32(doubleArguments[5]);
            t.isDST = -1;
            double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
            value = gregorianDateTimeToMS(exec, t, ms, false);
        }
    }

    return new (exec) DateInstance(exec, globalObject->dateStructure(), value);
}
    
static EncodedJSValue JSC_HOST_CALL constructWithDateConstructor(ExecState* exec)
{
    ArgList args(exec);
    return JSValue::encode(constructDate(exec, asInternalFunction(exec->callee())->globalObject(), args));
}

ConstructType DateConstructor::getConstructData(ConstructData& constructData)
{
    constructData.native.function = constructWithDateConstructor;
    return ConstructTypeHost;
}

// ECMA 15.9.2
static EncodedJSValue JSC_HOST_CALL callDate(ExecState* exec)
{
    time_t localTime = time(0);
    tm localTM;
    getLocalTime(&localTime, &localTM);
    GregorianDateTime ts(exec, localTM);
    DateConversionBuffer date;
    DateConversionBuffer time;
    formatDate(ts, date);
    formatTime(ts, time);
    return JSValue::encode(jsMakeNontrivialString(exec, date, " ", time));
}

CallType DateConstructor::getCallData(CallData& callData)
{
    callData.native.function = callDate;
    return CallTypeHost;
}

static EncodedJSValue JSC_HOST_CALL dateParse(ExecState* exec)
{
    return JSValue::encode(jsNumber(parseDate(exec, exec->argument(0).toString(exec))));
}

static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*)
{
    return JSValue::encode(jsNumber(jsCurrentTime()));
}

static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState* exec) 
{
    double doubleArguments[7] = {
        exec->argument(0).toNumber(exec), 
        exec->argument(1).toNumber(exec), 
        exec->argument(2).toNumber(exec), 
        exec->argument(3).toNumber(exec), 
        exec->argument(4).toNumber(exec), 
        exec->argument(5).toNumber(exec), 
        exec->argument(6).toNumber(exec)
    };
    int n = exec->argumentCount();
    if (isnan(doubleArguments[0])
            || isnan(doubleArguments[1])
            || (n >= 3 && isnan(doubleArguments[2]))
            || (n >= 4 && isnan(doubleArguments[3]))
            || (n >= 5 && isnan(doubleArguments[4]))
            || (n >= 6 && isnan(doubleArguments[5]))
            || (n >= 7 && isnan(doubleArguments[6])))
        return JSValue::encode(jsNaN());

    GregorianDateTime t;
    int year = JSC::toInt32(doubleArguments[0]);
    t.year = (year >= 0 && year <= 99) ? year : year - 1900;
    t.month = JSC::toInt32(doubleArguments[1]);
    t.monthDay = (n >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
    t.hour = JSC::toInt32(doubleArguments[3]);
    t.minute = JSC::toInt32(doubleArguments[4]);
    t.second = JSC::toInt32(doubleArguments[5]);
    double ms = (n >= 7) ? doubleArguments[6] : 0;
    return JSValue::encode(jsNumber(timeClip(gregorianDateTimeToMS(exec, t, ms, true))));
}

} // namespace JSC