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 "DateInstance.h"
  26 #include "DateMath.h"
  27 #include "DatePrototype.h"
  28 #include "JSGlobalObject.h"
  29 #include "JSString.h"
  30 #include "ObjectPrototype.h"
  31 #include "PrototypeFunction.h"
  32 #include <math.h>
  33 #include <time.h>
  34 #include <wtf/MathExtras.h>
  35
  36 #if HAVE(SYS_TIME_H)
  37 #include <sys/time.h>
  38 #endif
  39
  40 #if HAVE(SYS_TIMEB_H)
  41 #include <sys/timeb.h>
  42 #endif
  43
  44 namespace JSC {
  45
  46 // TODO: MakeTime (15.9.11.1) etc. ?
  47
  48 ASSERT_CLASS_FITS_IN_CELL(DateConstructor);
  49
  50 static JSValuePtr dateParse(ExecState*, JSObject*, JSValuePtr, const ArgList&);
  51 static JSValuePtr dateNow(ExecState*, JSObject*, JSValuePtr, const ArgList&);
  52 static JSValuePtr dateUTC(ExecState*, JSObject*, JSValuePtr, const ArgList&);
  53
  54 DateConstructor::DateConstructor(ExecState* exec, PassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, DatePrototype* datePrototype)
  55     : InternalFunction(&exec->globalData(), structure, Identifier(exec, datePrototype->classInfo()->className))
  56 {
  57       putDirectWithoutTransition(exec->propertyNames().prototype, datePrototype, DontEnum|DontDelete|ReadOnly);
  58
  59       putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, prototypeFunctionStructure, 1, exec->propertyNames().parse, dateParse), DontEnum);
  60       putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, prototypeFunctionStructure, 7, exec->propertyNames().UTC, dateUTC), DontEnum);
  61       putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, prototypeFunctionStructure, 0, exec->propertyNames().now, dateNow), DontEnum);
  62
  63       putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 7), ReadOnly | DontEnum | DontDelete);
  64 }
  65
  66 // ECMA 15.9.3
  67 JSObject* constructDate(ExecState* exec, const ArgList& args)
  68 {
  69     int numArgs = args.size();
  70
  71     double value;
  72
  73     if (numArgs == 0) // new Date() ECMA 15.9.3.3
  74         value = getCurrentUTCTime();
  75     else if (numArgs == 1) {
  76         if (args.at(exec, 0).isObject(&DateInstance::info))
  77             value = asDateInstance(args.at(exec, 0))->internalNumber();
  78         else {
  79             JSValuePtr primitive = args.at(exec, 0).toPrimitive(exec);
  80             if (primitive.isString())
  81                 value = parseDate(primitive.getString());
  82             else
  83                 value = primitive.toNumber(exec);
  84         }
  85     } else {
  86         if (isnan(args.at(exec, 0).toNumber(exec))
  87                 || isnan(args.at(exec, 1).toNumber(exec))
  88                 || (numArgs >= 3 && isnan(args.at(exec, 2).toNumber(exec)))
  89                 || (numArgs >= 4 && isnan(args.at(exec, 3).toNumber(exec)))
  90                 || (numArgs >= 5 && isnan(args.at(exec, 4).toNumber(exec)))
  91                 || (numArgs >= 6 && isnan(args.at(exec, 5).toNumber(exec)))
  92                 || (numArgs >= 7 && isnan(args.at(exec, 6).toNumber(exec))))
  93             value = NaN;
  94         else {
  95           GregorianDateTime t;
  96           int year = args.at(exec, 0).toInt32(exec);
  97           t.year = (year >= 0 && year <= 99) ? year : year - 1900;
  98           t.month = args.at(exec, 1).toInt32(exec);
  99           t.monthDay = (numArgs >= 3) ? args.at(exec, 2).toInt32(exec) : 1;
 100           t.hour = args.at(exec, 3).toInt32(exec);
 101           t.minute = args.at(exec, 4).toInt32(exec);
 102           t.second = args.at(exec, 5).toInt32(exec);
 103           t.isDST = -1;
 104           double ms = (numArgs >= 7) ? args.at(exec, 6).toNumber(exec) : 0;
 105           value = gregorianDateTimeToMS(t, ms, false);
 106         }
 107     }
 108
 109     DateInstance* result = new (exec) DateInstance(exec->lexicalGlobalObject()->dateStructure());
 110     result->setInternalValue(jsNumber(exec, timeClip(value)));
 111     return result;
 112 }
 113
 114 static JSObject* constructWithDateConstructor(ExecState* exec, JSObject*, const ArgList& args)
 115 {
 116     return constructDate(exec, args);
 117 }
 118
 119 ConstructType DateConstructor::getConstructData(ConstructData& constructData)
 120 {
 121     constructData.native.function = constructWithDateConstructor;
 122     return ConstructTypeHost;
 123 }
 124
 125 // ECMA 15.9.2
 126 static JSValuePtr callDate(ExecState* exec, JSObject*, JSValuePtr, const ArgList&)
 127 {
 128     time_t localTime = time(0);
 129     tm localTM;
 130     getLocalTime(&localTime, &localTM);
 131     GregorianDateTime ts(localTM);
 132     return jsNontrivialString(exec, formatDate(ts) + " " + formatTime(ts, false));
 133 }
 134
 135 CallType DateConstructor::getCallData(CallData& callData)
 136 {
 137     callData.native.function = callDate;
 138     return CallTypeHost;
 139 }
 140
 141 static JSValuePtr dateParse(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
 142 {
 143     return jsNumber(exec, parseDate(args.at(exec, 0).toString(exec)));
 144 }
 145
 146 static JSValuePtr dateNow(ExecState* exec, JSObject*, JSValuePtr, const ArgList&)
 147 {
 148     return jsNumber(exec, getCurrentUTCTime());
 149 }
 150
 151 static JSValuePtr dateUTC(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
 152 {
 153     int n = args.size();
 154     if (isnan(args.at(exec, 0).toNumber(exec))
 155             || isnan(args.at(exec, 1).toNumber(exec))
 156             || (n >= 3 && isnan(args.at(exec, 2).toNumber(exec)))
 157             || (n >= 4 && isnan(args.at(exec, 3).toNumber(exec)))
 158             || (n >= 5 && isnan(args.at(exec, 4).toNumber(exec)))
 159             || (n >= 6 && isnan(args.at(exec, 5).toNumber(exec)))
 160             || (n >= 7 && isnan(args.at(exec, 6).toNumber(exec))))
 161         return jsNaN(exec);
 162
 163     GregorianDateTime t;
 164     int year = args.at(exec, 0).toInt32(exec);
 165     t.year = (year >= 0 && year <= 99) ? year : year - 1900;
 166     t.month = args.at(exec, 1).toInt32(exec);
 167     t.monthDay = (n >= 3) ? args.at(exec, 2).toInt32(exec) : 1;
 168     t.hour = args.at(exec, 3).toInt32(exec);
 169     t.minute = args.at(exec, 4).toInt32(exec);
 170     t.second = args.at(exec, 5).toInt32(exec);
 171     double ms = (n >= 7) ? args.at(exec, 6).toNumber(exec) : 0;
 172     return jsNumber(exec, gregorianDateTimeToMS(t, ms, true));
 173 }
 174
 175 } // namespace JSC