dateprototype.cpp

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    const bool utc = false;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);
    return jsNumber(exec, t.minute);
}

JSValuePtr dateProtoFuncGetUTCMinutes(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = true;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);
    return jsNumber(exec, t.minute);
}

JSValuePtr dateProtoFuncGetSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = false;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);
    return jsNumber(exec, t.second);
}

JSValuePtr dateProtoFuncGetUTCSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = true;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);
    return jsNumber(exec, t.second);
}

JSValuePtr dateProtoFuncGetMilliSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    double secs = floor(milli / msPerSecond);
    double ms = milli - secs * msPerSecond;
    return jsNumber(exec, ms);
}

JSValuePtr dateProtoFuncGetUTCMilliseconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    double secs = floor(milli / msPerSecond);
    double ms = milli - secs * msPerSecond;
    return jsNumber(exec, ms);
}

JSValuePtr dateProtoFuncGetTimezoneOffset(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = false;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);
    return jsNumber(exec, -gmtoffset(t) / minutesPerHour);
}

JSValuePtr dateProtoFuncSetTime(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    DateInstance* thisDateObj = asDateInstance(thisValue); 

    double milli = timeClip(args.at(exec, 0).toNumber(exec));
    JSValuePtr result = jsNumber(exec, milli);
    thisDateObj->setInternalValue(result);
    return result;
}

static JSValuePtr setNewValueFromTimeArgs(ExecState* exec, JSValuePtr thisValue, const ArgList& args, int numArgsToUse, bool inputIsUTC)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    DateInstance* thisDateObj = asDateInstance(thisValue);
    double milli = thisDateObj->internalNumber();
    
    if (args.isEmpty() || isnan(milli)) {
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    }
     
    double secs = floor(milli / msPerSecond);
    double ms = milli - secs * msPerSecond;

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, inputIsUTC, t);

    if (!fillStructuresUsingTimeArgs(exec, args, numArgsToUse, &ms, &t)) {
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    } 
    
    JSValuePtr result = jsNumber(exec, gregorianDateTimeToMS(t, ms, inputIsUTC));
    thisDateObj->setInternalValue(result);
    return result;
}

static JSValuePtr setNewValueFromDateArgs(ExecState* exec, JSValuePtr thisValue, const ArgList& args, int numArgsToUse, bool inputIsUTC)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    DateInstance* thisDateObj = asDateInstance(thisValue);
    if (args.isEmpty()) {
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    }      
    
    double milli = thisDateObj->internalNumber();
    double ms = 0;

    GregorianDateTime t;
    if (numArgsToUse == 3 && isnan(milli))
        // Based on ECMA 262 15.9.5.40 - .41 (set[UTC]FullYear)
        // the time must be reset to +0 if it is NaN. 
        thisDateObj->msToGregorianDateTime(0, true, t);
    else {
        double secs = floor(milli / msPerSecond);
        ms = milli - secs * msPerSecond;
        thisDateObj->msToGregorianDateTime(milli, inputIsUTC, t);
    }
    
    if (!fillStructuresUsingDateArgs(exec, args, numArgsToUse, &ms, &t)) {
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    } 
           
    JSValuePtr result = jsNumber(exec, gregorianDateTimeToMS(t, ms, inputIsUTC));
    thisDateObj->setInternalValue(result);
    return result;
}

JSValuePtr dateProtoFuncSetMilliSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromTimeArgs(exec, thisValue, args, 1, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCMilliseconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromTimeArgs(exec, thisValue, args, 1, inputIsUTC);
}

JSValuePtr dateProtoFuncSetSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromTimeArgs(exec, thisValue, args, 2, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCSeconds(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromTimeArgs(exec, thisValue, args, 2, inputIsUTC);
}

JSValuePtr dateProtoFuncSetMinutes(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromTimeArgs(exec, thisValue, args, 3, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCMinutes(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromTimeArgs(exec, thisValue, args, 3, inputIsUTC);
}

JSValuePtr dateProtoFuncSetHours(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromTimeArgs(exec, thisValue, args, 4, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCHours(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromTimeArgs(exec, thisValue, args, 4, inputIsUTC);
}

JSValuePtr dateProtoFuncSetDate(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromDateArgs(exec, thisValue, args, 1, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCDate(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromDateArgs(exec, thisValue, args, 1, inputIsUTC);
}

JSValuePtr dateProtoFuncSetMonth(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromDateArgs(exec, thisValue, args, 2, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCMonth(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromDateArgs(exec, thisValue, args, 2, inputIsUTC);
}

JSValuePtr dateProtoFuncSetFullYear(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = false;
    return setNewValueFromDateArgs(exec, thisValue, args, 3, inputIsUTC);
}

JSValuePtr dateProtoFuncSetUTCFullYear(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    const bool inputIsUTC = true;
    return setNewValueFromDateArgs(exec, thisValue, args, 3, inputIsUTC);
}

JSValuePtr dateProtoFuncSetYear(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList& args)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = false;

    DateInstance* thisDateObj = asDateInstance(thisValue);     
    if (args.isEmpty()) { 
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    }
    
    double milli = thisDateObj->internalNumber();
    double ms = 0;

    GregorianDateTime t;
    if (isnan(milli))
        // Based on ECMA 262 B.2.5 (setYear)
        // the time must be reset to +0 if it is NaN. 
        thisDateObj->msToGregorianDateTime(0, true, t);
    else {   
        double secs = floor(milli / msPerSecond);
        ms = milli - secs * msPerSecond;
        thisDateObj->msToGregorianDateTime(milli, utc, t);
    }
    
    bool ok = true;
    int32_t year = args.at(exec, 0).toInt32(exec, ok);
    if (!ok) {
        JSValuePtr result = jsNaN(exec);
        thisDateObj->setInternalValue(result);
        return result;
    }
            
    t.year = (year > 99 || year < 0) ? year - 1900 : year;
    JSValuePtr result = jsNumber(exec, gregorianDateTimeToMS(t, ms, utc));
    thisDateObj->setInternalValue(result);
    return result;
}

JSValuePtr dateProtoFuncGetYear(ExecState* exec, JSObject*, JSValuePtr thisValue, const ArgList&)
{
    if (!thisValue.isObject(&DateInstance::info))
        return throwError(exec, TypeError);

    const bool utc = false;

    DateInstance* thisDateObj = asDateInstance(thisValue); 
    double milli = thisDateObj->internalNumber();
    if (isnan(milli))
        return jsNaN(exec);

    GregorianDateTime t;
    thisDateObj->msToGregorianDateTime(milli, utc, t);

    // NOTE: IE returns the full year even in getYear.
    return jsNumber(exec, t.year);
}

} // namespace JSC