runtime/DateConstructor.cpp

   1 /*
   2  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 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 "JSDateMath.h"
  29 #include "JSFunction.h"
  30 #include "JSGlobalObject.h"
  31 #include "JSString.h"
  32 #include "JSStringBuilder.h"
  33 #include "ObjectPrototype.h"
  34 #include <math.h>
  35 #include <time.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 static EncodedJSValue JSC_HOST_CALL dateParse(ExecState*);
  55 static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*);
  56 static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState*);
  57
  58 }
  59
  60 #include "DateConstructor.lut.h"
  61
  62 namespace JSC {
  63
  64 const ClassInfo DateConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::dateConstructorTable, CREATE_METHOD_TABLE(DateConstructor) };
  65
  66 /* Source for DateConstructor.lut.h
  67 @begin dateConstructorTable
  68   parse     dateParse   DontEnum|Function 1
  69   UTC       dateUTC     DontEnum|Function 7
  70   now       dateNow     DontEnum|Function 0
  71 @end
  72 */
  73
  74 ASSERT_CLASS_FITS_IN_CELL(DateConstructor);
  75 ASSERT_HAS_TRIVIAL_DESTRUCTOR(DateConstructor);
  76
  77 DateConstructor::DateConstructor(JSGlobalObject* globalObject, Structure* structure)
  78     : InternalFunction(globalObject, structure)
  79 {
  80 }
  81
  82 void DateConstructor::finishCreation(ExecState* exec, DatePrototype* datePrototype)
  83 {
  84     Base::finishCreation(exec->globalData(), Identifier(exec, datePrototype->classInfo()->className));
  85     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, datePrototype, DontEnum | DontDelete | ReadOnly);
  86     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(7), ReadOnly | DontEnum | DontDelete);
  87 }
  88
  89 bool DateConstructor::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
  90 {
  91     return getStaticFunctionSlot<InternalFunction>(exec, ExecState::dateConstructorTable(exec), jsCast<DateConstructor*>(cell), propertyName, slot);
  92 }
  93
  94 bool DateConstructor::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
  95 {
  96     return getStaticFunctionDescriptor<InternalFunction>(exec, ExecState::dateConstructorTable(exec), jsCast<DateConstructor*>(object), propertyName, descriptor);
  97 }
  98
  99 // ECMA 15.9.3
 100 JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
 101 {
 102     int numArgs = args.size();
 103
 104     double value;
 105
 106     if (numArgs == 0) // new Date() ECMA 15.9.3.3
 107         value = jsCurrentTime();
 108     else if (numArgs == 1) {
 109         if (args.at(0).inherits(&DateInstance::s_info))
 110             value = asDateInstance(args.at(0))->internalNumber();
 111         else {
 112             JSValue primitive = args.at(0).toPrimitive(exec);
 113             if (primitive.isString())
 114                 value = parseDate(exec, primitive.getString(exec));
 115             else
 116                 value = primitive.toNumber(exec);
 117         }
 118     } else {
 119         double doubleArguments[7] = {
 120             args.at(0).toNumber(exec),
 121             args.at(1).toNumber(exec),
 122             args.at(2).toNumber(exec),
 123             args.at(3).toNumber(exec),
 124             args.at(4).toNumber(exec),
 125             args.at(5).toNumber(exec),
 126             args.at(6).toNumber(exec)
 127         };
 128         if (!isfinite(doubleArguments[0])
 129             || !isfinite(doubleArguments[1])
 130             || (numArgs >= 3 && !isfinite(doubleArguments[2]))
 131             || (numArgs >= 4 && !isfinite(doubleArguments[3]))
 132             || (numArgs >= 5 && !isfinite(doubleArguments[4]))
 133             || (numArgs >= 6 && !isfinite(doubleArguments[5]))
 134             || (numArgs >= 7 && !isfinite(doubleArguments[6])))
 135             value = std::numeric_limits<double>::quiet_NaN();
 136         else {
 137             GregorianDateTime t;
 138             int year = JSC::toInt32(doubleArguments[0]);
 139             t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 140             t.month = JSC::toInt32(doubleArguments[1]);
 141             t.monthDay = (numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
 142             t.hour = JSC::toInt32(doubleArguments[3]);
 143             t.minute = JSC::toInt32(doubleArguments[4]);
 144             t.second = JSC::toInt32(doubleArguments[5]);
 145             t.isDST = -1;
 146             double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
 147             value = gregorianDateTimeToMS(exec, t, ms, false);
 148         }
 149     }
 150
 151     return DateInstance::create(exec, globalObject->dateStructure(), value);
 152 }
 153
 154 static EncodedJSValue JSC_HOST_CALL constructWithDateConstructor(ExecState* exec)
 155 {
 156     ArgList args(exec);
 157     return JSValue::encode(constructDate(exec, asInternalFunction(exec->callee())->globalObject(), args));
 158 }
 159
 160 ConstructType DateConstructor::getConstructData(JSCell*, ConstructData& constructData)
 161 {
 162     constructData.native.function = constructWithDateConstructor;
 163     return ConstructTypeHost;
 164 }
 165
 166 // ECMA 15.9.2
 167 static EncodedJSValue JSC_HOST_CALL callDate(ExecState* exec)
 168 {
 169     GregorianDateTime ts;
 170     msToGregorianDateTime(exec, currentTimeMS(), false, ts);
 171     DateConversionBuffer date;
 172     DateConversionBuffer time;
 173     formatDate(ts, date);
 174     formatTime(ts, time);
 175     return JSValue::encode(jsMakeNontrivialString(exec, date, " ", time));
 176 }
 177
 178 CallType DateConstructor::getCallData(JSCell*, CallData& callData)
 179 {
 180     callData.native.function = callDate;
 181     return CallTypeHost;
 182 }
 183
 184 static EncodedJSValue JSC_HOST_CALL dateParse(ExecState* exec)
 185 {
 186     return JSValue::encode(jsNumber(parseDate(exec, exec->argument(0).toString(exec)->value(exec))));
 187 }
 188
 189 static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*)
 190 {
 191     return JSValue::encode(jsNumber(jsCurrentTime()));
 192 }
 193
 194 static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState* exec)
 195 {
 196     double doubleArguments[7] = {
 197         exec->argument(0).toNumber(exec),
 198         exec->argument(1).toNumber(exec),
 199         exec->argument(2).toNumber(exec),
 200         exec->argument(3).toNumber(exec),
 201         exec->argument(4).toNumber(exec),
 202         exec->argument(5).toNumber(exec),
 203         exec->argument(6).toNumber(exec)
 204     };
 205     int n = exec->argumentCount();
 206     if (isnan(doubleArguments[0])
 207             || isnan(doubleArguments[1])
 208             || (n >= 3 && isnan(doubleArguments[2]))
 209             || (n >= 4 && isnan(doubleArguments[3]))
 210             || (n >= 5 && isnan(doubleArguments[4]))
 211             || (n >= 6 && isnan(doubleArguments[5]))
 212             || (n >= 7 && isnan(doubleArguments[6])))
 213         return JSValue::encode(jsNaN());
 214
 215     GregorianDateTime t;
 216     int year = JSC::toInt32(doubleArguments[0]);
 217     t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 218     t.month = JSC::toInt32(doubleArguments[1]);
 219     t.monthDay = (n >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
 220     t.hour = JSC::toInt32(doubleArguments[3]);
 221     t.minute = JSC::toInt32(doubleArguments[4]);
 222     t.second = JSC::toInt32(doubleArguments[5]);
 223     double ms = (n >= 7) ? doubleArguments[6] : 0;
 224     return JSValue::encode(jsNumber(timeClip(gregorianDateTimeToMS(exec, t, ms, true))));
 225 }
 226
 227 } // namespace JSC