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