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 "JSFunction.h"
  29 #include "JSGlobalObject.h"
  30 #include "JSString.h"
  31 #include "JSStringBuilder.h"
  32 #include "ObjectPrototype.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 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 };
  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
  76 DateConstructor::DateConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, DatePrototype* datePrototype)
  77     : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, datePrototype->classInfo()->className))
  78 {
  79     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, datePrototype, DontEnum | DontDelete | ReadOnly);
  80     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(7), ReadOnly | DontEnum | DontDelete);
  81 }
  82
  83 bool DateConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
  84 {
  85     return getStaticFunctionSlot<InternalFunction>(exec, ExecState::dateConstructorTable(exec), this, propertyName, slot);
  86 }
  87
  88 bool DateConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
  89 {
  90     return getStaticFunctionDescriptor<InternalFunction>(exec, ExecState::dateConstructorTable(exec), this, propertyName, descriptor);
  91 }
  92
  93 // ECMA 15.9.3
  94 JSObject* constructDate(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
  95 {
  96     int numArgs = args.size();
  97
  98     double value;
  99
 100     if (numArgs == 0) // new Date() ECMA 15.9.3.3
 101         value = jsCurrentTime();
 102     else if (numArgs == 1) {
 103         if (args.at(0).inherits(&DateInstance::s_info))
 104             value = asDateInstance(args.at(0))->internalNumber();
 105         else {
 106             JSValue primitive = args.at(0).toPrimitive(exec);
 107             if (primitive.isString())
 108                 value = parseDate(exec, primitive.getString(exec));
 109             else
 110                 value = primitive.toNumber(exec);
 111         }
 112     } else {
 113         double doubleArguments[7] = {
 114             args.at(0).toNumber(exec),
 115             args.at(1).toNumber(exec),
 116             args.at(2).toNumber(exec),
 117             args.at(3).toNumber(exec),
 118             args.at(4).toNumber(exec),
 119             args.at(5).toNumber(exec),
 120             args.at(6).toNumber(exec)
 121         };
 122         if (isnan(doubleArguments[0])
 123                 || isnan(doubleArguments[1])
 124                 || (numArgs >= 3 && isnan(doubleArguments[2]))
 125                 || (numArgs >= 4 && isnan(doubleArguments[3]))
 126                 || (numArgs >= 5 && isnan(doubleArguments[4]))
 127                 || (numArgs >= 6 && isnan(doubleArguments[5]))
 128                 || (numArgs >= 7 && isnan(doubleArguments[6])))
 129             value = NaN;
 130         else {
 131             GregorianDateTime t;
 132             int year = JSC::toInt32(doubleArguments[0]);
 133             t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 134             t.month = JSC::toInt32(doubleArguments[1]);
 135             t.monthDay = (numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
 136             t.hour = JSC::toInt32(doubleArguments[3]);
 137             t.minute = JSC::toInt32(doubleArguments[4]);
 138             t.second = JSC::toInt32(doubleArguments[5]);
 139             t.isDST = -1;
 140             double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
 141             value = gregorianDateTimeToMS(exec, t, ms, false);
 142         }
 143     }
 144
 145     return new (exec) DateInstance(exec, globalObject->dateStructure(), value);
 146 }
 147
 148 static EncodedJSValue JSC_HOST_CALL constructWithDateConstructor(ExecState* exec)
 149 {
 150     ArgList args(exec);
 151     return JSValue::encode(constructDate(exec, asInternalFunction(exec->callee())->globalObject(), args));
 152 }
 153
 154 ConstructType DateConstructor::getConstructData(ConstructData& constructData)
 155 {
 156     constructData.native.function = constructWithDateConstructor;
 157     return ConstructTypeHost;
 158 }
 159
 160 // ECMA 15.9.2
 161 static EncodedJSValue JSC_HOST_CALL callDate(ExecState* exec)
 162 {
 163     time_t localTime = time(0);
 164     tm localTM;
 165     getLocalTime(&localTime, &localTM);
 166     GregorianDateTime ts(exec, localTM);
 167     DateConversionBuffer date;
 168     DateConversionBuffer time;
 169     formatDate(ts, date);
 170     formatTime(ts, time);
 171     return JSValue::encode(jsMakeNontrivialString(exec, date, " ", time));
 172 }
 173
 174 CallType DateConstructor::getCallData(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))));
 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 (isnan(doubleArguments[0])
 203             || isnan(doubleArguments[1])
 204             || (n >= 3 && isnan(doubleArguments[2]))
 205             || (n >= 4 && isnan(doubleArguments[3]))
 206             || (n >= 5 && isnan(doubleArguments[4]))
 207             || (n >= 6 && isnan(doubleArguments[5]))
 208             || (n >= 7 && isnan(doubleArguments[6])))
 209         return JSValue::encode(jsNaN());
 210
 211     GregorianDateTime t;
 212     int year = JSC::toInt32(doubleArguments[0]);
 213     t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 214     t.month = JSC::toInt32(doubleArguments[1]);
 215     t.monthDay = (n >= 3) ? JSC::toInt32(doubleArguments[2]) : 1;
 216     t.hour = JSC::toInt32(doubleArguments[3]);
 217     t.minute = JSC::toInt32(doubleArguments[4]);
 218     t.second = 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