1/*
2 *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
3 *  Copyright (C) 2004, 2005, 2006, 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 "DateConstructor.h"
24
25#include "DateConversion.h"
26#include "DateInstance.h"
27#include "DatePrototype.h"
28#include "JSFunction.h"
29#include "JSGlobalObject.h"
30#include "JSString.h"
31#include "JSStringBuilder.h"
32#include "ObjectPrototype.h"
33#include <math.h>
34#include <time.h>
35#include <wtf/DateMath.h>
36#include <wtf/MathExtras.h>
37
38#if OS(WINCE) && !PLATFORM(QT)
39extern "C" time_t time(time_t* timer); // Provided by libce.
40#endif
41
42#if HAVE(SYS_TIME_H)
43#include <sys/time.h>
44#endif
45
46#if HAVE(SYS_TIMEB_H)
47#include <sys/timeb.h>
48#endif
49
50using namespace WTF;
51
52namespace JSC {
53
54ASSERT_CLASS_FITS_IN_CELL(DateConstructor);
55
56static EncodedJSValue JSC_HOST_CALL dateParse(ExecState*);
57static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*);
58static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState*);
59
60DateConstructor::DateConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, Structure* functionStructure, DatePrototype* datePrototype)
61    : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, datePrototype->classInfo()->className))
62{
63    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, datePrototype, DontEnum | DontDelete | ReadOnly);
64
65    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().parse, dateParse), DontEnum);
66    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 7, exec->propertyNames().UTC, dateUTC), DontEnum);
67    putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().now, dateNow), DontEnum);
68
69    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(7), ReadOnly | DontEnum | DontDelete);
70}
71
72// ECMA 15.9.3
73JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
74{
75    int numArgs = args.size();
76
77    double value;
78
79    if (numArgs == 0) // new Date() ECMA 15.9.3.3
80        value = jsCurrentTime();
81    else if (numArgs == 1) {
82        if (args.at(0).inherits(&DateInstance::s_info))
83            value = asDateInstance(args.at(0))->internalNumber();
84        else {
85            JSValue primitive = args.at(0).toPrimitive(exec);
86            if (primitive.isString())
87                value = parseDate(exec, primitive.getString(exec));
88            else
89                value = primitive.toNumber(exec);
90        }
91    } else {
92        double doubleArguments[7] = {
93            args.at(0).toNumber(exec),
94            args.at(1).toNumber(exec),
95            args.at(2).toNumber(exec),
96            args.at(3).toNumber(exec),
97            args.at(4).toNumber(exec),
98            args.at(5).toNumber(exec),
99            args.at(6).toNumber(exec)
100        };
101        if (isnan(doubleArguments[0])
102                || isnan(doubleArguments[1])
103                || (numArgs >= 3 && isnan(doubleArguments[2]))
104                || (numArgs >= 4 && isnan(doubleArguments[3]))
105                || (numArgs >= 5 && isnan(doubleArguments[4]))
106                || (numArgs >= 6 && isnan(doubleArguments[5]))
107                || (numArgs >= 7 && isnan(doubleArguments[6])))
108            value = NaN;
109        else {
110            GregorianDateTime t;
111            int year = JSC::toInt32(doubleArguments[0]);
112            t.year = (year >= 0 && year <= 99) ? year : year - 1900;
113            t.month = JSC::toInt32(doubleArguments[1]);
114            t.monthDay = (numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
115            t.hour = JSC::toInt32(doubleArguments[3]);
116            t.minute = JSC::toInt32(doubleArguments[4]);
117            t.second = JSC::toInt32(doubleArguments[5]);
118            t.isDST = -1;
119            double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
120            value = gregorianDateTimeToMS(exec, t, ms, false);
121        }
122    }
123
124    return new (exec) DateInstance(exec, globalObject->dateStructure(), value);
125}
126
127static EncodedJSValue JSC_HOST_CALL constructWithDateConstructor(ExecState* exec)
128{
129    ArgList args(exec);
130    return JSValue::encode(constructDate(exec, asInternalFunction(exec->callee())->globalObject(), args));
131}
132
133ConstructType DateConstructor::getConstructData(ConstructData& constructData)
134{
135    constructData.native.function = constructWithDateConstructor;
136    return ConstructTypeHost;
137}
138
139// ECMA 15.9.2
140static EncodedJSValue JSC_HOST_CALL callDate(ExecState* exec)
141{
142    time_t localTime = time(0);
143    tm localTM;
144    getLocalTime(&localTime, &localTM);
145    GregorianDateTime ts(exec, localTM);
146    DateConversionBuffer date;
147    DateConversionBuffer time;
148    formatDate(ts, date);
149    formatTime(ts, time);
150    return JSValue::encode(jsMakeNontrivialString(exec, date, " ", time));
151}
152
153CallType DateConstructor::getCallData(CallData& callData)
154{
155    callData.native.function = callDate;
156    return CallTypeHost;
157}
158
159static EncodedJSValue JSC_HOST_CALL dateParse(ExecState* exec)
160{
161    return JSValue::encode(jsNumber(parseDate(exec, exec->argument(0).toString(exec))));
162}
163
164static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*)
165{
166    return JSValue::encode(jsNumber(jsCurrentTime()));
167}
168
169static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState* exec)
170{
171    double doubleArguments[7] = {
172        exec->argument(0).toNumber(exec),
173        exec->argument(1).toNumber(exec),
174        exec->argument(2).toNumber(exec),
175        exec->argument(3).toNumber(exec),
176        exec->argument(4).toNumber(exec),
177        exec->argument(5).toNumber(exec),
178        exec->argument(6).toNumber(exec)
179    };
180    int n = exec->argumentCount();
181    if (isnan(doubleArguments[0])
182            || isnan(doubleArguments[1])
183            || (n >= 3 && isnan(doubleArguments[2]))
184            || (n >= 4 && isnan(doubleArguments[3]))
185            || (n >= 5 && isnan(doubleArguments[4]))
186            || (n >= 6 && isnan(doubleArguments[5]))
187            || (n >= 7 && isnan(doubleArguments[6])))
188        return JSValue::encode(jsNaN());
189
190    GregorianDateTime t;
191    int year = JSC::toInt32(doubleArguments[0]);
192    t.year = (year >= 0 && year <= 99) ? year : year - 1900;
193    t.month = JSC::toInt32(doubleArguments[1]);
194    t.monthDay = (n >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
195    t.hour = JSC::toInt32(doubleArguments[3]);
196    t.minute = JSC::toInt32(doubleArguments[4]);
197    t.second = JSC::toInt32(doubleArguments[5]);
198    double ms = (n >= 7) ? doubleArguments[6] : 0;
199    return JSValue::encode(jsNumber(timeClip(gregorianDateTimeToMS(exec, t, ms, true))));
200}
201
202} // namespace JSC
203