runtime/DateConstructor.cpp

   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 "ObjectPrototype.h"
  32 #include "PrototypeFunction.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)
  39 extern "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
  50 using namespace WTF;
  51
  52 namespace JSC {
  53
  54 ASSERT_CLASS_FITS_IN_CELL(DateConstructor);
  55
  56 static JSValue JSC_HOST_CALL dateParse(ExecState*, JSObject*, JSValue, const ArgList&);
  57 static JSValue JSC_HOST_CALL dateNow(ExecState*, JSObject*, JSValue, const ArgList&);
  58 static JSValue JSC_HOST_CALL dateUTC(ExecState*, JSObject*, JSValue, const ArgList&);
  59
  60 DateConstructor::DateConstructor(ExecState* exec, NonNullPassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, DatePrototype* datePrototype)
  61     : InternalFunction(&exec->globalData(), structure, Identifier(exec, datePrototype->classInfo()->className))
  62 {
  63       putDirectWithoutTransition(exec->propertyNames().prototype, datePrototype, DontEnum|DontDelete|ReadOnly);
  64
  65       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().parse, dateParse), DontEnum);
  66       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 7, exec->propertyNames().UTC, dateUTC), DontEnum);
  67       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().now, dateNow), DontEnum);
  68
  69       putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 7), ReadOnly | DontEnum | DontDelete);
  70 }
  71
  72 // ECMA 15.9.3
  73 JSObject* constructDate(ExecState* exec, 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::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         if (isnan(args.at(0).toNumber(exec))
  93                 || isnan(args.at(1).toNumber(exec))
  94                 || (numArgs >= 3 && isnan(args.at(2).toNumber(exec)))
  95                 || (numArgs >= 4 && isnan(args.at(3).toNumber(exec)))
  96                 || (numArgs >= 5 && isnan(args.at(4).toNumber(exec)))
  97                 || (numArgs >= 6 && isnan(args.at(5).toNumber(exec)))
  98                 || (numArgs >= 7 && isnan(args.at(6).toNumber(exec))))
  99             value = NaN;
 100         else {
 101             GregorianDateTime t;
 102             int year = args.at(0).toInt32(exec);
 103             t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 104             t.month = args.at(1).toInt32(exec);
 105             t.monthDay = (numArgs >= 3) ? args.at(2).toInt32(exec) : 1;
 106             t.hour = args.at(3).toInt32(exec);
 107             t.minute = args.at(4).toInt32(exec);
 108             t.second = args.at(5).toInt32(exec);
 109             t.isDST = -1;
 110             double ms = (numArgs >= 7) ? args.at(6).toNumber(exec) : 0;
 111             value = gregorianDateTimeToMS(exec, t, ms, false);
 112         }
 113     }
 114
 115     return new (exec) DateInstance(exec, value);
 116 }
 117
 118 static JSObject* constructWithDateConstructor(ExecState* exec, JSObject*, const ArgList& args)
 119 {
 120     return constructDate(exec, args);
 121 }
 122
 123 ConstructType DateConstructor::getConstructData(ConstructData& constructData)
 124 {
 125     constructData.native.function = constructWithDateConstructor;
 126     return ConstructTypeHost;
 127 }
 128
 129 // ECMA 15.9.2
 130 static JSValue JSC_HOST_CALL callDate(ExecState* exec, JSObject*, JSValue, const ArgList&)
 131 {
 132     time_t localTime = time(0);
 133     tm localTM;
 134     getLocalTime(&localTime, &localTM);
 135     GregorianDateTime ts(exec, localTM);
 136     DateConversionBuffer date;
 137     DateConversionBuffer time;
 138     formatDate(ts, date);
 139     formatTime(ts, time);
 140     return jsNontrivialString(exec, makeString(date, " ", time));
 141 }
 142
 143 CallType DateConstructor::getCallData(CallData& callData)
 144 {
 145     callData.native.function = callDate;
 146     return CallTypeHost;
 147 }
 148
 149 static JSValue JSC_HOST_CALL dateParse(ExecState* exec, JSObject*, JSValue, const ArgList& args)
 150 {
 151     return jsNumber(exec, parseDate(exec, args.at(0).toString(exec)));
 152 }
 153
 154 static JSValue JSC_HOST_CALL dateNow(ExecState* exec, JSObject*, JSValue, const ArgList&)
 155 {
 156     return jsNumber(exec, jsCurrentTime());
 157 }
 158
 159 static JSValue JSC_HOST_CALL dateUTC(ExecState* exec, JSObject*, JSValue, const ArgList& args)
 160 {
 161     int n = args.size();
 162     if (isnan(args.at(0).toNumber(exec))
 163             || isnan(args.at(1).toNumber(exec))
 164             || (n >= 3 && isnan(args.at(2).toNumber(exec)))
 165             || (n >= 4 && isnan(args.at(3).toNumber(exec)))
 166             || (n >= 5 && isnan(args.at(4).toNumber(exec)))
 167             || (n >= 6 && isnan(args.at(5).toNumber(exec)))
 168             || (n >= 7 && isnan(args.at(6).toNumber(exec))))
 169         return jsNaN(exec);
 170
 171     GregorianDateTime t;
 172     int year = args.at(0).toInt32(exec);
 173     t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 174     t.month = args.at(1).toInt32(exec);
 175     t.monthDay = (n >= 3) ? args.at(2).toInt32(exec) : 1;
 176     t.hour = args.at(3).toInt32(exec);
 177     t.minute = args.at(4).toInt32(exec);
 178     t.second = args.at(5).toInt32(exec);
 179     double ms = (n >= 7) ? args.at(6).toNumber(exec) : 0;
 180     return jsNumber(exec, gregorianDateTimeToMS(exec, t, ms, true));
 181 }
 182
 183 } // namespace JSC