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 PLATFORM(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 // TODO: MakeTime (15.9.11.1) etc. ?
  55
  56 ASSERT_CLASS_FITS_IN_CELL(DateConstructor);
  57
  58 static JSValue JSC_HOST_CALL dateParse(ExecState*, JSObject*, JSValue, const ArgList&);
  59 static JSValue JSC_HOST_CALL dateNow(ExecState*, JSObject*, JSValue, const ArgList&);
  60 static JSValue JSC_HOST_CALL dateUTC(ExecState*, JSObject*, JSValue, const ArgList&);
  61
  62 DateConstructor::DateConstructor(ExecState* exec, PassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, DatePrototype* datePrototype)
  63     : InternalFunction(&exec->globalData(), structure, Identifier(exec, datePrototype->classInfo()->className))
  64 {
  65       putDirectWithoutTransition(exec->propertyNames().prototype, datePrototype, DontEnum|DontDelete|ReadOnly);
  66
  67       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().parse, dateParse), DontEnum);
  68       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 7, exec->propertyNames().UTC, dateUTC), DontEnum);
  69       putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().now, dateNow), DontEnum);
  70
  71       putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 7), ReadOnly | DontEnum | DontDelete);
  72 }
  73
  74 // ECMA 15.9.3
  75 JSObject* constructDate(ExecState* exec, const ArgList& args)
  76 {
  77     int numArgs = args.size();
  78
  79     double value;
  80
  81     if (numArgs == 0) // new Date() ECMA 15.9.3.3
  82         value = getCurrentUTCTime();
  83     else if (numArgs == 1) {
  84         if (args.at(0).isObject(&DateInstance::info))
  85             value = asDateInstance(args.at(0))->internalNumber();
  86         else {
  87             JSValue primitive = args.at(0).toPrimitive(exec);
  88             if (primitive.isString())
  89                 value = parseDate(primitive.getString());
  90             else
  91                 value = primitive.toNumber(exec);
  92         }
  93     } else {
  94         if (isnan(args.at(0).toNumber(exec))
  95                 || isnan(args.at(1).toNumber(exec))
  96                 || (numArgs >= 3 && isnan(args.at(2).toNumber(exec)))
  97                 || (numArgs >= 4 && isnan(args.at(3).toNumber(exec)))
  98                 || (numArgs >= 5 && isnan(args.at(4).toNumber(exec)))
  99                 || (numArgs >= 6 && isnan(args.at(5).toNumber(exec)))
 100                 || (numArgs >= 7 && isnan(args.at(6).toNumber(exec))))
 101             value = NaN;
 102         else {
 103           GregorianDateTime t;
 104           int year = args.at(0).toInt32(exec);
 105           t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 106           t.month = args.at(1).toInt32(exec);
 107           t.monthDay = (numArgs >= 3) ? args.at(2).toInt32(exec) : 1;
 108           t.hour = args.at(3).toInt32(exec);
 109           t.minute = args.at(4).toInt32(exec);
 110           t.second = args.at(5).toInt32(exec);
 111           t.isDST = -1;
 112           double ms = (numArgs >= 7) ? args.at(6).toNumber(exec) : 0;
 113           value = gregorianDateTimeToMS(t, ms, false);
 114         }
 115     }
 116
 117     DateInstance* result = new (exec) DateInstance(exec->lexicalGlobalObject()->dateStructure());
 118     result->setInternalValue(jsNumber(exec, timeClip(value)));
 119     return result;
 120 }
 121
 122 static JSObject* constructWithDateConstructor(ExecState* exec, JSObject*, const ArgList& args)
 123 {
 124     return constructDate(exec, args);
 125 }
 126
 127 ConstructType DateConstructor::getConstructData(ConstructData& constructData)
 128 {
 129     constructData.native.function = constructWithDateConstructor;
 130     return ConstructTypeHost;
 131 }
 132
 133 // ECMA 15.9.2
 134 static JSValue JSC_HOST_CALL callDate(ExecState* exec, JSObject*, JSValue, const ArgList&)
 135 {
 136     time_t localTime = time(0);
 137     tm localTM;
 138     getLocalTime(&localTime, &localTM);
 139     GregorianDateTime ts(localTM);
 140     return jsNontrivialString(exec, formatDate(ts) + " " + formatTime(ts, false));
 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(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, getCurrentUTCTime());
 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(t, ms, true));
 181 }
 182
 183 } // namespace JSC