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 "Operations.h"
  35 #include <math.h>
  36 #include <time.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 static EncodedJSValue JSC_HOST_CALL dateParse(ExecState*);
  56 static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*);
  57 static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState*);
  58
  59 }
  60
  61 #include "DateConstructor.lut.h"
  62
  63 namespace JSC {
  64
  65 const ClassInfo DateConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::dateConstructorTable, CREATE_METHOD_TABLE(DateConstructor) };
  66
  67 /* Source for DateConstructor.lut.h
  68 @begin dateConstructorTable
  69   parse     dateParse   DontEnum|Function 1
  70   UTC       dateUTC     DontEnum|Function 7
  71   now       dateNow     DontEnum|Function 0
  72 @end
  73 */
  74
  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->vm(), datePrototype->classInfo()->className);
  85     putDirectWithoutTransition(exec->vm(), exec->propertyNames().prototype, datePrototype, DontEnum | DontDelete | ReadOnly);
  86     putDirectWithoutTransition(exec->vm(), exec->propertyNames().length, jsNumber(7), ReadOnly | DontEnum | DontDelete);
  87 }
  88
  89 bool DateConstructor::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName 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, PropertyName 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 (!std::isfinite(doubleArguments[0])
 129             || !std::isfinite(doubleArguments[1])
 130             || (numArgs >= 3 && !std::isfinite(doubleArguments[2]))
 131             || (numArgs >= 4 && !std::isfinite(doubleArguments[3]))
 132             || (numArgs >= 5 && !std::isfinite(doubleArguments[4]))
 133             || (numArgs >= 6 && !std::isfinite(doubleArguments[5]))
 134             || (numArgs >= 7 && !std::isfinite(doubleArguments[6])))
 135             value = QNaN;
 136         else {
 137             GregorianDateTime t;
 138             int year = JSC::toInt32(doubleArguments[0]);
 139             t.setYear((year >= 0 && year <= 99) ? (year + 1900) : year);
 140             t.setMonth(JSC::toInt32(doubleArguments[1]));
 141             t.setMonthDay((numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1);
 142             t.setHour(JSC::toInt32(doubleArguments[3]));
 143             t.setMinute(JSC::toInt32(doubleArguments[4]));
 144             t.setSecond(JSC::toInt32(doubleArguments[5]));
 145             t.setIsDST(-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     return JSValue::encode(jsNontrivialString(exec, formatDateTime(ts, DateTimeFormatDateAndTime, false)));
 172 }
 173
 174 CallType DateConstructor::getCallData(JSCell*, CallData& callData)
 175 {
 176     callData.native.function = callDate;
 177     return CallTypeHost;
 178 }
 179
 180 static EncodedJSValue JSC_HOST_CALL dateParse(ExecState* exec)
 181 {
 182     return JSValue::encode(jsNumber(parseDate(exec, exec->argument(0).toString(exec)->value(exec))));
 183 }
 184
 185 static EncodedJSValue JSC_HOST_CALL dateNow(ExecState*)
 186 {
 187     return JSValue::encode(jsNumber(jsCurrentTime()));
 188 }
 189
 190 static EncodedJSValue JSC_HOST_CALL dateUTC(ExecState* exec)
 191 {
 192     double doubleArguments[7] = {
 193         exec->argument(0).toNumber(exec),
 194         exec->argument(1).toNumber(exec),
 195         exec->argument(2).toNumber(exec),
 196         exec->argument(3).toNumber(exec),
 197         exec->argument(4).toNumber(exec),
 198         exec->argument(5).toNumber(exec),
 199         exec->argument(6).toNumber(exec)
 200     };
 201     int n = exec->argumentCount();
 202     if (std::isnan(doubleArguments[0])
 203         || std::isnan(doubleArguments[1])
 204         || (n >= 3 && std::isnan(doubleArguments[2]))
 205         || (n >= 4 && std::isnan(doubleArguments[3]))
 206         || (n >= 5 && std::isnan(doubleArguments[4]))
 207         || (n >= 6 && std::isnan(doubleArguments[5]))
 208         || (n >= 7 && std::isnan(doubleArguments[6])))
 209         return JSValue::encode(jsNaN());
 210
 211     GregorianDateTime t;
 212     int year = JSC::toInt32(doubleArguments[0]);
 213     t.setYear((year >= 0 && year <= 99) ? (year + 1900) : year);
 214     t.setMonth(JSC::toInt32(doubleArguments[1]));
 215     t.setMonthDay((n >= 3) ? JSC::toInt32(doubleArguments[2]) : 1);
 216     t.setHour(JSC::toInt32(doubleArguments[3]));
 217     t.setMinute(JSC::toInt32(doubleArguments[4]));
 218     t.setSecond(JSC::toInt32(doubleArguments[5]));
 219     double ms = (n >= 7) ? doubleArguments[6] : 0;
 220     return JSValue::encode(jsNumber(timeClip(gregorianDateTimeToMS(exec, t, ms, true))));
 221 }
 222
 223 } // namespace JSC