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// Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
// SPDX-License-Identifier: BSD-3-Clause
#include "qscriptecmanumber_p.h"
#include "qscriptengine_p.h"
#include "qscriptvalueimpl_p.h"
#include "qscriptcontext_p.h"
#include "qscriptmember_p.h"
#include "qscriptobject_p.h"
#include <QtDebug>
#include <qnumeric.h>
#include <math.h>
QT_BEGIN_NAMESPACE
namespace QScript { namespace Ecma {
Number::Number(QScriptEnginePrivate *eng):
Core(eng, QLatin1String("Number"), QScriptClassInfo::NumberType)
{
newNumber(&publicPrototype, 0);
eng->newConstructor(&ctor, this, publicPrototype);
addPrototypeFunction(QLatin1String("toString"), method_toString, 0);
addPrototypeFunction(QLatin1String("toLocaleString"), method_toLocaleString, 0);
addPrototypeFunction(QLatin1String("valueOf"), method_valueOf, 0);
addPrototypeFunction(QLatin1String("toFixed"), method_toFixed, 1);
addPrototypeFunction(QLatin1String("toExponential"), method_toExponential, 1);
addPrototypeFunction(QLatin1String("toPrecision"), method_toPrecision, 1);
QScriptValue::PropertyFlags flags = QScriptValue::Undeletable
| QScriptValue::ReadOnly
| QScriptValue::SkipInEnumeration;
ctor.setProperty(QLatin1String("NaN"),
QScriptValueImpl(qSNaN()), flags);
ctor.setProperty(QLatin1String("NEGATIVE_INFINITY"),
QScriptValueImpl(-qInf()), flags);
ctor.setProperty(QLatin1String("POSITIVE_INFINITY"),
QScriptValueImpl(qInf()), flags);
ctor.setProperty(QLatin1String("MAX_VALUE"),
QScriptValueImpl(1.7976931348623158e+308), flags);
#ifdef __INTEL_COMPILER
# pragma warning( push )
# pragma warning(disable: 239)
#endif
ctor.setProperty(QLatin1String("MIN_VALUE"),
QScriptValueImpl(5e-324), flags);
#ifdef __INTEL_COMPILER
# pragma warning( pop )
#endif
}
Number::~Number()
{
}
void Number::execute(QScriptContextPrivate *context)
{
#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
engine()->notifyFunctionEntry(context);
#endif
qsreal value;
if (context->argumentCount() > 0)
value = context->argument(0).toNumber();
else
value = 0;
QScriptValueImpl num(value);
if (!context->isCalledAsConstructor()) {
context->setReturnValue(num);
} else {
QScriptValueImpl &obj = context->m_thisObject;
obj.setClassInfo(classInfo());
obj.setInternalValue(num);
obj.setPrototype(publicPrototype);
context->setReturnValue(obj);
}
#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
engine()->notifyFunctionExit(context);
#endif
}
void Number::newNumber(QScriptValueImpl *result, qsreal value)
{
engine()->newObject(result, publicPrototype, classInfo());
result->setInternalValue(QScriptValueImpl(value));
}
QScriptValueImpl Number::method_toString(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.toString"));
}
QScriptValueImpl arg = context->argument(0);
if (!arg.isUndefined()) {
int radix = arg.toInt32();
if (radix < 2 || radix > 36)
return context->throwError(QString::fromLatin1("Number.prototype.toString: %0 is not a valid radix")
.arg(radix));
if (radix != 10) {
QString str;
qsreal num = self.internalValue().toNumber();
if (qIsNaN(num))
return QScriptValueImpl(eng, QLatin1String("NaN"));
else if (qIsInf(num))
return QScriptValueImpl(eng, QLatin1String(num < 0 ? "-Infinity" : "Infinity"));
bool negative = false;
if (num < 0) {
negative = true;
num = -num;
}
qsreal frac = num - ::floor(num);
num = QScriptEnginePrivate::toInteger(num);
do {
char c = (char)::fmod(num, radix);
c = (c < 10) ? (c + '0') : (c - 10 + 'a');
str.prepend(QLatin1Char(c));
num = ::floor(num / radix);
} while (num != 0);
if (frac != 0) {
str.append(QLatin1Char('.'));
do {
frac = frac * radix;
char c = (char)::floor(frac);
c = (c < 10) ? (c + '0') : (c - 10 + 'a');
str.append(QLatin1Char(c));
frac = frac - ::floor(frac);
} while (frac != 0);
}
if (negative)
str.prepend(QLatin1Char('-'));
return QScriptValueImpl(eng, str);
}
}
QString str = self.internalValue().toString();
return (QScriptValueImpl(eng, str));
}
QScriptValueImpl Number::method_toLocaleString(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.toLocaleString"));
}
QString str = self.internalValue().toString();
return (QScriptValueImpl(eng, str));
}
QScriptValueImpl Number::method_valueOf(QScriptContextPrivate *context, QScriptEnginePrivate *, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.valueOf"));
}
return (self.internalValue());
}
QScriptValueImpl Number::method_toFixed(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.toFixed"));
}
qsreal fdigits = 0;
if (context->argumentCount() > 0)
fdigits = context->argument(0).toInteger();
if (qIsNaN(fdigits))
fdigits = 0;
qsreal v = self.internalValue().toNumber();
QString str;
if (qIsNaN(v))
str = QString::fromLatin1("NaN");
else if (qIsInf(v))
str = QString::fromLatin1(v < 0 ? "-Infinity" : "Infinity");
else
str = QString::number(v, 'f', int (fdigits));
return (QScriptValueImpl(eng, str));
}
QScriptValueImpl Number::method_toExponential(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.toExponential"));
}
qsreal fdigits = 0;
if (context->argumentCount() > 0)
fdigits = context->argument(0).toInteger();
qsreal v = self.internalValue().toNumber();
QString z = QString::number(v, 'e', int (fdigits));
return (QScriptValueImpl(eng, z));
}
QScriptValueImpl Number::method_toPrecision(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *classInfo)
{
QScriptValueImpl self = context->thisObject();
if (self.classInfo() != classInfo) {
return throwThisObjectTypeError(
context, QLatin1String("Number.prototype.toPrecision"));
}
qsreal fdigits = 0;
if (context->argumentCount() > 0)
fdigits = context->argument(0).toInteger();
qsreal v = self.internalValue().toNumber();
return (QScriptValueImpl(eng, QString::number(v, 'g', int (fdigits))));
}
} } // namespace QScript::Ecma
QT_END_NAMESPACE
|
