Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 1922 insertions, 0 deletions

diff --git a/Source/WebCore/bridge/qt/qt_runtime.cpp b/Source/WebCore/bridge/qt/qt_runtime.cpp
new file mode 100644
index 000000000..ac61986a3
--- /dev/null
+++ b/Source/WebCore/bridge/qt/qt_runtime.cpp
@@ -0,0 +1,1922 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "qt_runtime.h"
+
+#include "APICast.h"
+#include "BooleanObject.h"
+#include "DateInstance.h"
+#include "DateMath.h"
+#include "DatePrototype.h"
+#include "FunctionPrototype.h"
+#include "Interpreter.h"
+#include "JSArray.h"
+#include "JSByteArray.h"
+#include "JSDocument.h"
+#include "JSDOMBinding.h"
+#include "JSDOMWindow.h"
+#include <JSFunction.h>
+#include "JSGlobalObject.h"
+#include "JSHTMLElement.h"
+#include "JSLock.h"
+#include "JSObject.h"
+#include "JSRetainPtr.h"
+#include "ObjectPrototype.h"
+#include "PropertyNameArray.h"
+#include "RegExpConstructor.h"
+#include "RegExpObject.h"
+#include "qdatetime.h"
+#include "qdebug.h"
+#include "qmetaobject.h"
+#include "qmetatype.h"
+#include "qobject.h"
+#include "qstringlist.h"
+#include "qt_instance.h"
+#include "qt_pixmapruntime.h"
+#include "qvarlengtharray.h"
+#include <limits.h>
+#include <runtime/Error.h>
+#include <runtime_array.h>
+#include <runtime_object.h>
+
+// QtScript has these
+Q_DECLARE_METATYPE(QObjectList);
+Q_DECLARE_METATYPE(QList<int>);
+Q_DECLARE_METATYPE(QVariant);
+
+using namespace WebCore;
+
+namespace JSC {
+namespace Bindings {
+
+// Debugging
+//#define QTWK_RUNTIME_CONVERSION_DEBUG
+//#define QTWK_RUNTIME_MATCH_DEBUG
+
+class QWKNoDebug
+{
+public:
+    inline QWKNoDebug(){}
+    inline ~QWKNoDebug(){}
+
+    template<typename T>
+    inline QWKNoDebug &operator<<(const T &) { return *this; }
+};
+
+#ifdef QTWK_RUNTIME_CONVERSION_DEBUG
+#define qConvDebug() qDebug()
+#else
+#define qConvDebug() QWKNoDebug()
+#endif
+
+#ifdef QTWK_RUNTIME_MATCH_DEBUG
+#define qMatchDebug() qDebug()
+#else
+#define qMatchDebug() QWKNoDebug()
+#endif
+
+typedef enum {
+    Variant = 0,
+    Number,
+    Boolean,
+    String,
+    Date,
+    RegExp,
+    Array,
+    QObj,
+    Object,
+    Null,
+    RTArray,
+    JSByteArray
+} JSRealType;
+
+#if defined(QTWK_RUNTIME_CONVERSION_DEBUG) || defined(QTWK_RUNTIME_MATCH_DEBUG)
+QDebug operator<<(QDebug dbg, const JSRealType &c)
+{
+     const char *map[] = { "Variant", "Number", "Boolean", "String", "Date",
+         "RegExp", "Array", "RTObject", "Object", "Null", "RTArray"};
+
+     dbg.nospace() << "JSType(" << ((int)c) << ", " <<  map[c] << ")";
+
+     return dbg.space();
+}
+#endif
+
+struct RuntimeConversion {
+    ConvertToJSValueFunction toJSValueFunc;
+    ConvertToVariantFunction toVariantFunc;
+};
+
+typedef QHash<int, RuntimeConversion> RuntimeConversionTable;
+Q_GLOBAL_STATIC(RuntimeConversionTable, customRuntimeConversions)
+
+void registerCustomType(int qtMetaTypeId, ConvertToVariantFunction toVariantFunc, ConvertToJSValueFunction toJSValueFunc)
+{
+    RuntimeConversion conversion;
+    conversion.toJSValueFunc = toJSValueFunc;
+    conversion.toVariantFunc = toVariantFunc;
+    customRuntimeConversions()->insert(qtMetaTypeId, conversion);
+}
+
+static JSRealType valueRealType(ExecState* exec, JSValue val)
+{
+    if (val.isNumber())
+        return Number;
+    else if (val.isString())
+        return String;
+    else if (val.isBoolean())
+        return Boolean;
+    else if (val.isNull())
+        return Null;
+    else if (isJSByteArray(val))
+        return JSByteArray;
+    else if (val.isObject()) {
+        JSObject *object = val.toObject(exec);
+        if (object->inherits(&RuntimeArray::s_info))  // RuntimeArray 'inherits' from Array, but not in C++
+            return RTArray;
+        else if (object->inherits(&JSArray::s_info))
+            return Array;
+        else if (object->inherits(&DateInstance::s_info))
+            return Date;
+        else if (object->inherits(&RegExpObject::s_info))
+            return RegExp;
+        else if (object->inherits(&RuntimeObject::s_info))
+            return QObj;
+        return Object;
+    }
+
+    return String; // I don't know.
+}
+
+QVariant convertValueToQVariant(ExecState*, JSValue, QMetaType::Type, int*, HashSet<JSObject*>*, int);
+
+static QVariantMap convertValueToQVariantMap(ExecState* exec, JSObject* object, HashSet<JSObject*>* visitedObjects, int recursionLimit)
+{
+    Q_ASSERT(!exec->hadException());
+
+    PropertyNameArray properties(exec);
+    object->methodTable()->getPropertyNames(object, exec, properties, ExcludeDontEnumProperties);
+    PropertyNameArray::const_iterator it = properties.begin();
+    QVariantMap result;
+    int objdist = 0;
+
+    while (it != properties.end()) {
+        if (object->propertyIsEnumerable(exec, *it)) {
+            JSValue val = object->get(exec, *it);
+            if (exec->hadException())
+                exec->clearException();
+            else {
+                QVariant v = convertValueToQVariant(exec, val, QMetaType::Void, &objdist, visitedObjects, recursionLimit);
+                if (objdist >= 0) {
+                    UString ustring = (*it).ustring();
+                    QString id = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+                    result.insert(id, v);
+                }
+            }
+        }
+        ++it;
+    }
+    return result;
+}
+
+QVariant convertValueToQVariant(ExecState* exec, JSValue value, QMetaType::Type hint, int *distance, HashSet<JSObject*>* visitedObjects, int recursionLimit)
+{
+    --recursionLimit;
+
+    if (!value || !recursionLimit)
+        return QVariant();
+
+    JSObject* object = 0;
+    if (value.isObject()) {
+        object = value.toObject(exec);
+        if (visitedObjects->contains(object))
+            return QVariant();
+
+        visitedObjects->add(object);
+    }
+
+    // check magic pointer values before dereferencing value
+    if (value == jsNaN()
+        || (value == jsUndefined()
+            && hint != QMetaType::QString
+            && hint != (QMetaType::Type) qMetaTypeId<QVariant>())) {
+        if (distance)
+            *distance = -1;
+        return QVariant();
+    }
+
+    JSLock lock(SilenceAssertionsOnly);
+    JSRealType type = valueRealType(exec, value);
+    if (hint == QMetaType::Void) {
+        switch(type) {
+            case Number:
+                hint = QMetaType::Double;
+                break;
+            case Boolean:
+                hint = QMetaType::Bool;
+                break;
+            case String:
+            default:
+                hint = QMetaType::QString;
+                break;
+            case Date:
+                hint = QMetaType::QDateTime;
+                break;
+            case RegExp:
+                hint = QMetaType::QRegExp;
+                break;
+            case Object:
+                if (object->inherits(&NumberObject::s_info))
+                    hint = QMetaType::Double;
+                else if (object->inherits(&BooleanObject::s_info))
+                    hint = QMetaType::Bool;
+                else
+                    hint = QMetaType::QVariantMap;
+                break;
+            case QObj:
+                hint = QMetaType::QObjectStar;
+                break;
+            case JSByteArray:
+                hint = QMetaType::QByteArray;
+                break;
+            case Array:
+            case RTArray:
+                hint = QMetaType::QVariantList;
+                break;
+        }
+    }
+
+    qConvDebug() << "convertValueToQVariant: jstype is " << type << ", hint is" << hint;
+
+    if (value == jsNull()
+        && hint != QMetaType::QObjectStar
+        && hint != QMetaType::VoidStar
+        && hint != QMetaType::QString
+        && hint != (QMetaType::Type) qMetaTypeId<QVariant>()) {
+        if (distance)
+            *distance = -1;
+        return QVariant();
+    }
+
+    QVariant ret;
+    int dist = -1;
+    switch (hint) {
+        case QMetaType::Bool:
+            if (type == Object && object->inherits(&BooleanObject::s_info))
+                ret = QVariant(asBooleanObject(value)->internalValue().toBoolean(exec));
+            else
+                ret = QVariant(value.toBoolean(exec));
+            if (type == Boolean)
+                dist = 0;
+            else
+                dist = 10;
+            break;
+
+        case QMetaType::Int:
+        case QMetaType::UInt:
+        case QMetaType::Long:
+        case QMetaType::ULong:
+        case QMetaType::LongLong:
+        case QMetaType::ULongLong:
+        case QMetaType::Short:
+        case QMetaType::UShort:
+        case QMetaType::Float:
+        case QMetaType::Double:
+            ret = QVariant(value.toNumber(exec));
+            ret.convert((QVariant::Type)hint);
+            if (type == Number) {
+                switch (hint) {
+                case QMetaType::Double:
+                    dist = 0;
+                    break;
+                case QMetaType::Float:
+                    dist = 1;
+                    break;
+                case QMetaType::LongLong:
+                case QMetaType::ULongLong:
+                    dist = 2;
+                    break;
+                case QMetaType::Long:
+                case QMetaType::ULong:
+                    dist = 3;
+                    break;
+                case QMetaType::Int:
+                case QMetaType::UInt:
+                    dist = 4;
+                    break;
+                case QMetaType::Short:
+                case QMetaType::UShort:
+                    dist = 5;
+                    break;
+                    break;
+                default:
+                    dist = 10;
+                    break;
+                }
+            } else {
+                dist = 10;
+            }
+            break;
+
+        case QMetaType::QChar:
+            if (type == Number || type == Boolean) {
+                ret = QVariant(QChar((ushort)value.toNumber(exec)));
+                if (type == Boolean)
+                    dist = 3;
+                else
+                    dist = 6;
+            } else {
+                UString str = value.toString(exec);
+                ret = QVariant(QChar(str.length() ? *(const ushort*)str.impl()->characters() : 0));
+                if (type == String)
+                    dist = 3;
+                else
+                    dist = 10;
+            }
+            break;
+
+        case QMetaType::QString: {
+            if (value.isUndefinedOrNull()) {
+                if (distance)
+                    *distance = 1;
+                return QString();
+            } else {
+                UString ustring = value.toString(exec);
+                ret = QVariant(QString((const QChar*)ustring.impl()->characters(), ustring.length()));
+                if (type == String)
+                    dist = 0;
+                else
+                    dist = 10;
+            }
+            break;
+        }
+
+        case QMetaType::QVariantMap:
+            if (type == Object || type == Array || type == RTArray) {
+                ret = QVariant(convertValueToQVariantMap(exec, object, visitedObjects, recursionLimit));
+                // Those types can still have perfect matches, e.g. 'bool' if value is a Boolean Object.
+                dist = 1;
+            }
+            break;
+
+        case QMetaType::QVariantList:
+            if (type == RTArray) {
+                RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);
+
+                QVariantList result;
+                int len = rtarray->getLength();
+                int objdist = 0;
+                qConvDebug() << "converting a " << len << " length Array";
+                for (int i = 0; i < len; ++i) {
+                    JSValue val = rtarray->getConcreteArray()->valueAt(exec, i);
+                    result.append(convertValueToQVariant(exec, val, QMetaType::Void, &objdist, visitedObjects, recursionLimit));
+                    if (objdist == -1) {
+                        qConvDebug() << "Failed converting element at index " << i;
+                        break; // Failed converting a list entry, so fail the array
+                    }
+                }
+                if (objdist != -1) {
+                    dist = 5;
+                    ret = QVariant(result);
+                }
+            } else if (type == Array) {
+                JSArray* array = static_cast<JSArray*>(object);
+
+                QVariantList result;
+                int len = array->length();
+                int objdist = 0;
+                qConvDebug() << "converting a " << len << " length Array";
+                for (int i = 0; i < len; ++i) {
+                    JSValue val = array->get(exec, i);
+                    result.append(convertValueToQVariant(exec, val, QMetaType::Void, &objdist, visitedObjects, recursionLimit));
+                    if (objdist == -1) {
+                        qConvDebug() << "Failed converting element at index " << i;
+                        break; // Failed converting a list entry, so fail the array
+                    }
+                }
+                if (objdist != -1) {
+                    dist = 5;
+                    ret = QVariant(result);
+                }
+            } else {
+                // Make a single length array
+                int objdist;
+                qConvDebug() << "making a single length variantlist";
+                QVariant var = convertValueToQVariant(exec, value, QMetaType::Void, &objdist, visitedObjects, recursionLimit);
+                if (objdist != -1) {
+                    QVariantList result;
+                    result << var;
+                    ret = QVariant(result);
+                    dist = 10;
+                } else {
+                    qConvDebug() << "failed making single length varlist";
+                }
+            }
+            break;
+
+        case QMetaType::QStringList: {
+            if (type == RTArray) {
+                RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);
+
+                QStringList result;
+                int len = rtarray->getLength();
+                for (int i = 0; i < len; ++i) {
+                    JSValue val = rtarray->getConcreteArray()->valueAt(exec, i);
+                    UString ustring = val.toString(exec);
+                    QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+
+                    result.append(qstring);
+                }
+                dist = 5;
+                ret = QVariant(result);
+            } else if (type == Array) {
+                JSArray* array = static_cast<JSArray*>(object);
+
+                QStringList result;
+                int len = array->length();
+                for (int i = 0; i < len; ++i) {
+                    JSValue val = array->get(exec, i);
+                    UString ustring = val.toString(exec);
+                    QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+
+                    result.append(qstring);
+                }
+                dist = 5;
+                ret = QVariant(result);
+            } else {
+                // Make a single length array
+                UString ustring = value.toString(exec);
+                QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+                QStringList result;
+                result.append(qstring);
+                ret = QVariant(result);
+                dist = 10;
+            }
+            break;
+        }
+
+        case QMetaType::QByteArray: {
+            if (type == JSByteArray) {
+                WTF::ByteArray* arr = asByteArray(value)->storage();
+                ret = QVariant(QByteArray(reinterpret_cast<const char*>(arr->data()), arr->length()));
+                dist = 0;
+            } else {
+                UString ustring = value.toString(exec);
+                ret = QVariant(QString((const QChar*)ustring.impl()->characters(), ustring.length()).toLatin1());
+                if (type == String)
+                    dist = 5;
+                else
+                    dist = 10;
+            }
+            break;
+        }
+
+        case QMetaType::QDateTime:
+        case QMetaType::QDate:
+        case QMetaType::QTime:
+            if (type == Date) {
+                DateInstance* date = static_cast<DateInstance*>(object);
+                GregorianDateTime gdt;
+                msToGregorianDateTime(exec, date->internalNumber(), true, gdt);
+                if (hint == QMetaType::QDateTime) {
+                    ret = QDateTime(QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay), QTime(gdt.hour, gdt.minute, gdt.second), Qt::UTC);
+                    dist = 0;
+                } else if (hint == QMetaType::QDate) {
+                    ret = QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay);
+                    dist = 1;
+                } else {
+                    ret = QTime(gdt.hour + 1900, gdt.minute, gdt.second);
+                    dist = 2;
+                }
+            } else if (type == Number) {
+                double b = value.toNumber(exec);
+                GregorianDateTime gdt;
+                msToGregorianDateTime(exec, b, true, gdt);
+                if (hint == QMetaType::QDateTime) {
+                    ret = QDateTime(QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay), QTime(gdt.hour, gdt.minute, gdt.second), Qt::UTC);
+                    dist = 6;
+                } else if (hint == QMetaType::QDate) {
+                    ret = QDate(gdt.year + 1900, gdt.month + 1, gdt.monthDay);
+                    dist = 8;
+                } else {
+                    ret = QTime(gdt.hour, gdt.minute, gdt.second);
+                    dist = 10;
+                }
+#ifndef QT_NO_DATESTRING
+            } else if (type == String) {
+                UString ustring = value.toString(exec);
+                QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+
+                if (hint == QMetaType::QDateTime) {
+                    QDateTime dt = QDateTime::fromString(qstring, Qt::ISODate);
+                    if (!dt.isValid())
+                        dt = QDateTime::fromString(qstring, Qt::TextDate);
+                    if (!dt.isValid())
+                        dt = QDateTime::fromString(qstring, Qt::SystemLocaleDate);
+                    if (!dt.isValid())
+                        dt = QDateTime::fromString(qstring, Qt::LocaleDate);
+                    if (dt.isValid()) {
+                        ret = dt;
+                        dist = 2;
+                    }
+                } else if (hint == QMetaType::QDate) {
+                    QDate dt = QDate::fromString(qstring, Qt::ISODate);
+                    if (!dt.isValid())
+                        dt = QDate::fromString(qstring, Qt::TextDate);
+                    if (!dt.isValid())
+                        dt = QDate::fromString(qstring, Qt::SystemLocaleDate);
+                    if (!dt.isValid())
+                        dt = QDate::fromString(qstring, Qt::LocaleDate);
+                    if (dt.isValid()) {
+                        ret = dt;
+                        dist = 3;
+                    }
+                } else {
+                    QTime dt = QTime::fromString(qstring, Qt::ISODate);
+                    if (!dt.isValid())
+                        dt = QTime::fromString(qstring, Qt::TextDate);
+                    if (!dt.isValid())
+                        dt = QTime::fromString(qstring, Qt::SystemLocaleDate);
+                    if (!dt.isValid())
+                        dt = QTime::fromString(qstring, Qt::LocaleDate);
+                    if (dt.isValid()) {
+                        ret = dt;
+                        dist = 3;
+                    }
+                }
+#endif // QT_NO_DATESTRING
+            }
+            break;
+
+        case QMetaType::QRegExp:
+            if (type == RegExp) {
+/*
+                RegExpObject *re = static_cast<RegExpObject*>(object);
+*/
+                // Attempt to convert.. a bit risky
+                UString ustring = value.toString(exec);
+                QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+
+                // this is of the form '/xxxxxx/i'
+                int firstSlash = qstring.indexOf(QLatin1Char('/'));
+                int lastSlash = qstring.lastIndexOf(QLatin1Char('/'));
+                if (firstSlash >=0 && lastSlash > firstSlash) {
+                    QRegExp realRe;
+
+                    realRe.setPattern(qstring.mid(firstSlash + 1, lastSlash - firstSlash - 1));
+
+                    if (qstring.mid(lastSlash + 1).contains(QLatin1Char('i')))
+                        realRe.setCaseSensitivity(Qt::CaseInsensitive);
+
+                    ret = QVariant::fromValue(realRe);
+                    dist = 0;
+                } else {
+                    qConvDebug() << "couldn't parse a JS regexp";
+                }
+            } else if (type == String) {
+                UString ustring = value.toString(exec);
+                QString qstring = QString((const QChar*)ustring.impl()->characters(), ustring.length());
+
+                QRegExp re(qstring);
+                if (re.isValid()) {
+                    ret = QVariant::fromValue(re);
+                    dist = 10;
+                }
+            }
+            break;
+
+        case QMetaType::QObjectStar:
+            if (type == QObj) {
+                QtInstance* qtinst = QtInstance::getInstance(object);
+                if (qtinst) {
+                    if (qtinst->getObject()) {
+                        qConvDebug() << "found instance, with object:" << (void*) qtinst->getObject();
+                        ret = QVariant::fromValue(qtinst->getObject());
+                        qConvDebug() << ret;
+                        dist = 0;
+                    } else {
+                        qConvDebug() << "can't convert deleted qobject";
+                    }
+                } else {
+                    qConvDebug() << "wasn't a qtinstance";
+                }
+            } else if (type == Null) {
+                QObject* nullobj = 0;
+                ret = QVariant::fromValue(nullobj);
+                dist = 0;
+            } else {
+                qConvDebug() << "previous type was not an object:" << type;
+            }
+            break;
+
+        case QMetaType::VoidStar:
+            if (type == QObj) {
+                QtInstance* qtinst = QtInstance::getInstance(object);
+                if (qtinst) {
+                    if (qtinst->getObject()) {
+                        qConvDebug() << "found instance, with object:" << (void*) qtinst->getObject();
+                        ret = QVariant::fromValue((void *)qtinst->getObject());
+                        qConvDebug() << ret;
+                        dist = 0;
+                    } else {
+                        qConvDebug() << "can't convert deleted qobject";
+                    }
+                } else {
+                    qConvDebug() << "wasn't a qtinstance";
+                }
+            } else if (type == Null) {
+                ret = QVariant::fromValue((void*)0);
+                dist = 0;
+            } else if (type == Number) {
+                // I don't think that converting a double to a pointer is a wise
+                // move.  Except maybe 0.
+                qConvDebug() << "got number for void * - not converting, seems unsafe:" << value.toNumber(exec);
+            } else {
+                qConvDebug() << "void* - unhandled type" << type;
+            }
+            break;
+
+        default:
+            // Non const type ids
+            if (hint == (QMetaType::Type) qMetaTypeId<QObjectList>())
+            {
+                if (type == RTArray) {
+                    RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);
+
+                    QObjectList result;
+                    int len = rtarray->getLength();
+                    for (int i = 0; i < len; ++i) {
+                        JSValue val = rtarray->getConcreteArray()->valueAt(exec, i);
+                        int itemdist = -1;
+                        QVariant item = convertValueToQVariant(exec, val, QMetaType::QObjectStar, &itemdist, visitedObjects, recursionLimit);
+                        if (itemdist >= 0)
+                            result.append(item.value<QObject*>());
+                        else
+                            break;
+                    }
+                    // If we didn't fail conversion
+                    if (result.count() == len) {
+                        dist = 5;
+                        ret = QVariant::fromValue(result);
+                    }
+                } else if (type == Array) {
+                    JSObject* object = value.toObject(exec);
+                    JSArray* array = static_cast<JSArray *>(object);
+                    QObjectList result;
+                    int len = array->length();
+                    for (int i = 0; i < len; ++i) {
+                        JSValue val = array->get(exec, i);
+                        int itemdist = -1;
+                        QVariant item = convertValueToQVariant(exec, val, QMetaType::QObjectStar, &itemdist, visitedObjects, recursionLimit);
+                        if (itemdist >= 0)
+                            result.append(item.value<QObject*>());
+                        else
+                            break;
+                    }
+                    // If we didn't fail conversion
+                    if (result.count() == len) {
+                        dist = 5;
+                        ret = QVariant::fromValue(result);
+                    }
+                } else {
+                    // Make a single length array
+                    QObjectList result;
+                    int itemdist = -1;
+                    QVariant item = convertValueToQVariant(exec, value, QMetaType::QObjectStar, &itemdist, visitedObjects, recursionLimit);
+                    if (itemdist >= 0) {
+                        result.append(item.value<QObject*>());
+                        dist = 10;
+                        ret = QVariant::fromValue(result);
+                    }
+                }
+                break;
+            } else if (hint == (QMetaType::Type) qMetaTypeId<QList<int> >()) {
+                if (type == RTArray) {
+                    RuntimeArray* rtarray = static_cast<RuntimeArray*>(object);
+
+                    QList<int> result;
+                    int len = rtarray->getLength();
+                    for (int i = 0; i < len; ++i) {
+                        JSValue val = rtarray->getConcreteArray()->valueAt(exec, i);
+                        int itemdist = -1;
+                        QVariant item = convertValueToQVariant(exec, val, QMetaType::Int, &itemdist, visitedObjects, recursionLimit);
+                        if (itemdist >= 0)
+                            result.append(item.value<int>());
+                        else
+                            break;
+                    }
+                    // If we didn't fail conversion
+                    if (result.count() == len) {
+                        dist = 5;
+                        ret = QVariant::fromValue(result);
+                    }
+                } else if (type == Array) {
+                    JSArray* array = static_cast<JSArray *>(object);
+
+                    QList<int> result;
+                    int len = array->length();
+                    for (int i = 0; i < len; ++i) {
+                        JSValue val = array->get(exec, i);
+                        int itemdist = -1;
+                        QVariant item = convertValueToQVariant(exec, val, QMetaType::Int, &itemdist, visitedObjects, recursionLimit);
+                        if (itemdist >= 0)
+                            result.append(item.value<int>());
+                        else
+                            break;
+                    }
+                    // If we didn't fail conversion
+                    if (result.count() == len) {
+                        dist = 5;
+                        ret = QVariant::fromValue(result);
+                    }
+                } else {
+                    // Make a single length array
+                    QList<int> result;
+                    int itemdist = -1;
+                    QVariant item = convertValueToQVariant(exec, value, QMetaType::Int, &itemdist, visitedObjects, recursionLimit);
+                    if (itemdist >= 0) {
+                        result.append(item.value<int>());
+                        dist = 10;
+                        ret = QVariant::fromValue(result);
+                    }
+                }
+                break;
+            } else if (QtPixmapInstance::canHandle(static_cast<QMetaType::Type>(hint))) {
+                ret = QtPixmapInstance::variantFromObject(object, static_cast<QMetaType::Type>(hint));
+            } else if (customRuntimeConversions()->contains(hint)) {
+                ret = customRuntimeConversions()->value(hint).toVariantFunc(object, &dist, visitedObjects);
+                if (dist == 0)
+                    break;
+            } else if (hint == (QMetaType::Type) qMetaTypeId<QVariant>()) {
+                if (value.isUndefinedOrNull()) {
+                    if (distance)
+                        *distance = 1;
+                    return QVariant();
+                } else {
+                    if (type == Object) {
+                        // Since we haven't really visited this object yet, we remove it
+                        visitedObjects->remove(object);
+                    }
+
+                    // And then recurse with the autodetect flag
+                    ret = convertValueToQVariant(exec, value, QMetaType::Void, distance, visitedObjects, recursionLimit);
+                    dist = 10;
+                }
+                break;
+            }
+
+            dist = 10;
+            break;
+    }
+
+    if (!ret.isValid())
+        dist = -1;
+    if (distance)
+        *distance = dist;
+
+    return ret;
+}
+
+QVariant convertValueToQVariant(ExecState* exec, JSValue value, QMetaType::Type hint, int *distance)
+{
+    const int recursionLimit = 200;
+    HashSet<JSObject*> visitedObjects;
+    return convertValueToQVariant(exec, value, hint, distance, &visitedObjects, recursionLimit);
+}
+
+JSValue convertQVariantToValue(ExecState* exec, PassRefPtr<RootObject> root, const QVariant& variant)
+{
+    // Variants with QObject * can be isNull but not a null pointer
+    // An empty QString variant is also null
+    QMetaType::Type type = (QMetaType::Type) variant.userType();
+
+    qConvDebug() << "convertQVariantToValue: metatype:" << type << ", isnull: " << variant.isNull();
+    if (variant.isNull() &&
+        type != QMetaType::QObjectStar &&
+        type != QMetaType::VoidStar &&
+        type != QMetaType::QWidgetStar &&
+        type != QMetaType::QString) {
+        return jsNull();
+    }
+
+    JSLock lock(SilenceAssertionsOnly);
+
+    if (type == QMetaType::Bool)
+        return jsBoolean(variant.toBool());
+
+    if (type == QMetaType::Int ||
+        type == QMetaType::UInt ||
+        type == QMetaType::Long ||
+        type == QMetaType::ULong ||
+        type == QMetaType::LongLong ||
+        type == QMetaType::ULongLong ||
+        type == QMetaType::Short ||
+        type == QMetaType::UShort ||
+        type == QMetaType::Float ||
+        type == QMetaType::Double)
+        return jsNumber(variant.toDouble());
+
+    if (type == QMetaType::QRegExp) {
+        QRegExp re = variant.value<QRegExp>();
+
+        if (re.isValid()) {
+            UString pattern((UChar*)re.pattern().utf16(), re.pattern().length());
+            RegExpFlags flags = (re.caseSensitivity() == Qt::CaseInsensitive) ? FlagIgnoreCase : NoFlags;
+
+            JSC::RegExp* regExp = JSC::RegExp::create(exec->globalData(), pattern, flags);
+            if (regExp->isValid())
+                return RegExpObject::create(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->regExpStructure(), regExp);
+            return jsNull();
+        }
+    }
+
+    if (type == QMetaType::QDateTime ||
+        type == QMetaType::QDate ||
+        type == QMetaType::QTime) {
+
+        QDate date = QDate::currentDate();
+        QTime time(0,0,0); // midnight
+
+        if (type == QMetaType::QDate)
+            date = variant.value<QDate>();
+        else if (type == QMetaType::QTime)
+            time = variant.value<QTime>();
+        else {
+            QDateTime dt = variant.value<QDateTime>().toLocalTime();
+            date = dt.date();
+            time = dt.time();
+        }
+
+        // Dates specified this way are in local time (we convert DateTimes above)
+        GregorianDateTime dt;
+        dt.year = date.year() - 1900;
+        dt.month = date.month() - 1;
+        dt.monthDay = date.day();
+        dt.hour = time.hour();
+        dt.minute = time.minute();
+        dt.second = time.second();
+        dt.isDST = -1;
+        double ms = gregorianDateTimeToMS(exec, dt, time.msec(), /*inputIsUTC*/ false);
+
+        return DateInstance::create(exec, exec->lexicalGlobalObject()->dateStructure(), trunc(ms));
+    }
+
+    if (type == QMetaType::QByteArray) {
+        QByteArray qtByteArray = variant.value<QByteArray>();
+        WTF::RefPtr<WTF::ByteArray> wtfByteArray = WTF::ByteArray::create(qtByteArray.length());
+        memcpy(wtfByteArray->data(), qtByteArray.constData(), qtByteArray.length());
+        return JSC::JSByteArray::create(exec, JSC::JSByteArray::createStructure(exec->globalData(), exec->lexicalGlobalObject(), jsNull()), wtfByteArray.get());
+    }
+
+    if (type == QMetaType::QObjectStar || type == QMetaType::QWidgetStar) {
+        QObject* obj = variant.value<QObject*>();
+        if (!obj)
+            return jsNull();
+        return QtInstance::getQtInstance(obj, root, QScriptEngine::QtOwnership)->createRuntimeObject(exec);
+    }
+
+    if (QtPixmapInstance::canHandle(static_cast<QMetaType::Type>(variant.type())))
+        return QtPixmapInstance::createPixmapRuntimeObject(exec, root, variant);
+
+    if (customRuntimeConversions()->contains(type)) {
+        if (!root->globalObject()->inherits(&JSDOMWindow::s_info))
+            return jsUndefined();
+
+        Document* document = (static_cast<JSDOMWindow*>(root->globalObject()))->impl()->document();
+        if (!document)
+            return jsUndefined();
+        return customRuntimeConversions()->value(type).toJSValueFunc(exec, toJSDOMGlobalObject(document, exec), variant);
+    }
+
+    if (type == QMetaType::QVariantMap) {
+        // create a new object, and stuff properties into it
+        JSObject* ret = constructEmptyObject(exec);
+        QVariantMap map = variant.value<QVariantMap>();
+        QVariantMap::const_iterator i = map.constBegin();
+        while (i != map.constEnd()) {
+            QString s = i.key();
+            JSValue val = convertQVariantToValue(exec, root.get(), i.value());
+            if (val) {
+                PutPropertySlot slot;
+                ret->methodTable()->put(ret, exec, Identifier(&exec->globalData(), reinterpret_cast_ptr<const UChar *>(s.constData()), s.length()), val, slot);
+                // ### error case?
+            }
+            ++i;
+        }
+
+        return ret;
+    }
+
+    // List types
+    if (type == QMetaType::QVariantList) {
+        QVariantList vl = variant.toList();
+        qConvDebug() << "got a " << vl.count() << " length list:" << vl;
+        return RuntimeArray::create(exec, new QtArray<QVariant>(vl, QMetaType::Void, root));
+    } else if (type == QMetaType::QStringList) {
+        QStringList sl = variant.value<QStringList>();
+        return RuntimeArray::create(exec, new QtArray<QString>(sl, QMetaType::QString, root));
+    } else if (type == (QMetaType::Type) qMetaTypeId<QObjectList>()) {
+        QObjectList ol= variant.value<QObjectList>();
+        return RuntimeArray::create(exec, new QtArray<QObject*>(ol, QMetaType::QObjectStar, root));
+    } else if (type == (QMetaType::Type)qMetaTypeId<QList<int> >()) {
+        QList<int> il= variant.value<QList<int> >();
+        return RuntimeArray::create(exec, new QtArray<int>(il, QMetaType::Int, root));
+    }
+
+    if (type == (QMetaType::Type)qMetaTypeId<QVariant>()) {
+        QVariant real = variant.value<QVariant>();
+        qConvDebug() << "real variant is:" << real;
+        return convertQVariantToValue(exec, root, real);
+    }
+
+    qConvDebug() << "fallback path for" << variant << variant.userType();
+
+    QString string = variant.toString();
+    UString ustring((UChar*)string.utf16(), string.length());
+    return jsString(exec, ustring);
+}
+
+// ===============
+
+// Qt-like macros
+#define QW_D(Class) Class##Data* d = d_func()
+#define QW_DS(Class,Instance) Class##Data* d = Instance->d_func()
+
+const ClassInfo QtRuntimeMethod::s_info = { "QtRuntimeMethod", &InternalFunction::s_info, 0, 0, CREATE_METHOD_TABLE(QtRuntimeMethod) };
+
+QtRuntimeMethod::QtRuntimeMethod(QtRuntimeMethodData* dd, ExecState* exec, Structure* structure, const Identifier& identifier)
+    : InternalFunction(exec->lexicalGlobalObject(), structure)
+    , d_ptr(dd)
+{
+}
+
+void QtRuntimeMethod::finishCreation(ExecState* exec, const Identifier& identifier, PassRefPtr<QtInstance> instance)
+{
+    Base::finishCreation(exec->globalData(), identifier);
+    QW_D(QtRuntimeMethod);
+    d->m_instance = instance;
+    d->m_finalizer.set(exec->globalData(), this, d);
+}
+
+QtRuntimeMethod::~QtRuntimeMethod()
+{
+    delete d_ptr;
+}
+
+void QtRuntimeMethod::destroy(JSCell* cell)
+{
+    jsCast<QtRuntimeMethod*>(cell)->QtRuntimeMethod::~QtRuntimeMethod();
+}
+
+// ===============
+
+QtRuntimeMethodData::~QtRuntimeMethodData()
+{
+}
+
+void QtRuntimeMethodData::finalize(Handle<Unknown> value, void*)
+{
+    m_instance->removeCachedMethod(static_cast<JSObject*>(value.get().asCell()));
+}
+
+QtRuntimeMetaMethodData::~QtRuntimeMetaMethodData()
+{
+
+}
+
+QtRuntimeConnectionMethodData::~QtRuntimeConnectionMethodData()
+{
+
+}
+
+// ===============
+
+// Type conversion metadata (from QtScript originally)
+class QtMethodMatchType
+{
+public:
+    enum Kind {
+        Invalid,
+        Variant,
+        MetaType,
+        Unresolved,
+        MetaEnum
+    };
+
+
+    QtMethodMatchType()
+        : m_kind(Invalid) { }
+
+    Kind kind() const
+    { return m_kind; }
+
+    QMetaType::Type typeId() const;
+
+    bool isValid() const
+    { return (m_kind != Invalid); }
+
+    bool isVariant() const
+    { return (m_kind == Variant); }
+
+    bool isMetaType() const
+    { return (m_kind == MetaType); }
+
+    bool isUnresolved() const
+    { return (m_kind == Unresolved); }
+
+    bool isMetaEnum() const
+    { return (m_kind == MetaEnum); }
+
+    QByteArray name() const;
+
+    int enumeratorIndex() const
+    { Q_ASSERT(isMetaEnum()); return m_typeId; }
+
+    static QtMethodMatchType variant()
+    { return QtMethodMatchType(Variant); }
+
+    static QtMethodMatchType metaType(int typeId, const QByteArray &name)
+    { return QtMethodMatchType(MetaType, typeId, name); }
+
+    static QtMethodMatchType metaEnum(int enumIndex, const QByteArray &name)
+    { return QtMethodMatchType(MetaEnum, enumIndex, name); }
+
+    static QtMethodMatchType unresolved(const QByteArray &name)
+    { return QtMethodMatchType(Unresolved, /*typeId=*/0, name); }
+
+private:
+    QtMethodMatchType(Kind kind, int typeId = 0, const QByteArray &name = QByteArray())
+        : m_kind(kind), m_typeId(typeId), m_name(name) { }
+
+    Kind m_kind;
+    int m_typeId;
+    QByteArray m_name;
+};
+
+QMetaType::Type QtMethodMatchType::typeId() const
+{
+    if (isVariant())
+        return (QMetaType::Type) QMetaType::type("QVariant");
+    return (QMetaType::Type) (isMetaEnum() ? QMetaType::Int : m_typeId);
+}
+
+QByteArray QtMethodMatchType::name() const
+{
+    if (!m_name.isEmpty())
+        return m_name;
+    else if (m_kind == Variant)
+        return "QVariant";
+    return QByteArray();
+}
+
+struct QtMethodMatchData
+{
+    int matchDistance;
+    int index;
+    QVector<QtMethodMatchType> types;
+    QVarLengthArray<QVariant, 10> args;
+
+    QtMethodMatchData(int dist, int idx, QVector<QtMethodMatchType> typs,
+                                const QVarLengthArray<QVariant, 10> &as)
+        : matchDistance(dist), index(idx), types(typs), args(as) { }
+    QtMethodMatchData()
+        : index(-1) { }
+
+    bool isValid() const
+    { return (index != -1); }
+
+    int firstUnresolvedIndex() const
+    {
+        for (int i=0; i < types.count(); i++) {
+            if (types.at(i).isUnresolved())
+                return i;
+        }
+        return -1;
+    }
+};
+
+static int indexOfMetaEnum(const QMetaObject *meta, const QByteArray &str)
+{
+    QByteArray scope;
+    QByteArray name;
+    int scopeIdx = str.indexOf("::");
+    if (scopeIdx != -1) {
+        scope = str.left(scopeIdx);
+        name = str.mid(scopeIdx + 2);
+    } else {
+        name = str;
+    }
+    for (int i = meta->enumeratorCount() - 1; i >= 0; --i) {
+        QMetaEnum m = meta->enumerator(i);
+        if ((m.name() == name)/* && (scope.isEmpty() || (m.scope() == scope))*/)
+            return i;
+    }
+    return -1;
+}
+
+// Helper function for resolving methods
+// Largely based on code in QtScript for compatibility reasons
+static int findMethodIndex(ExecState* exec,
+                           const QMetaObject* meta,
+                           const QByteArray& signature,
+                           bool allowPrivate,
+                           QVarLengthArray<QVariant, 10> &vars,
+                           void** vvars,
+                           JSObject **pError)
+{
+    QList<int> matchingIndices;
+
+    bool overloads = !signature.contains('(');
+
+    int count = meta->methodCount();
+    for (int i = count - 1; i >= 0; --i) {
+        const QMetaMethod m = meta->method(i);
+
+        // Don't choose private methods
+        if (m.access() == QMetaMethod::Private && !allowPrivate)
+            continue;
+
+        // try and find all matching named methods
+        if (m.signature() == signature)
+            matchingIndices.append(i);
+        else if (overloads) {
+            QByteArray rawsignature = m.signature();
+            rawsignature.truncate(rawsignature.indexOf('('));
+            if (rawsignature == signature)
+                matchingIndices.append(i);
+        }
+    }
+
+    int chosenIndex = -1;
+    *pError = 0;
+    QVector<QtMethodMatchType> chosenTypes;
+
+    QVarLengthArray<QVariant, 10> args;
+    QVector<QtMethodMatchData> candidates;
+    QVector<QtMethodMatchData> unresolved;
+    QVector<int> tooFewArgs;
+    QVector<int> conversionFailed;
+
+    foreach(int index, matchingIndices) {
+        QMetaMethod method = meta->method(index);
+
+        QVector<QtMethodMatchType> types;
+        bool unresolvedTypes = false;
+
+        // resolve return type
+        QByteArray returnTypeName = method.typeName();
+        int rtype = QMetaType::type(returnTypeName);
+        if ((rtype == 0) && !returnTypeName.isEmpty()) {
+            if (returnTypeName == "QVariant") {
+                types.append(QtMethodMatchType::variant());
+            } else if (returnTypeName.endsWith('*')) {
+                types.append(QtMethodMatchType::metaType(QMetaType::VoidStar, returnTypeName));
+            } else {
+                int enumIndex = indexOfMetaEnum(meta, returnTypeName);
+                if (enumIndex != -1)
+                    types.append(QtMethodMatchType::metaEnum(enumIndex, returnTypeName));
+                else {
+                    unresolvedTypes = true;
+                    types.append(QtMethodMatchType::unresolved(returnTypeName));
+                }
+            }
+        } else {
+            if (returnTypeName == "QVariant")
+                types.append(QtMethodMatchType::variant());
+            else
+                types.append(QtMethodMatchType::metaType(rtype, returnTypeName));
+        }
+
+        // resolve argument types
+        QList<QByteArray> parameterTypeNames = method.parameterTypes();
+        for (int i = 0; i < parameterTypeNames.count(); ++i) {
+            QByteArray argTypeName = parameterTypeNames.at(i);
+            int atype = QMetaType::type(argTypeName);
+            if (atype == 0) {
+                if (argTypeName == "QVariant") {
+                    types.append(QtMethodMatchType::variant());
+                } else {
+                    int enumIndex = indexOfMetaEnum(meta, argTypeName);
+                    if (enumIndex != -1)
+                        types.append(QtMethodMatchType::metaEnum(enumIndex, argTypeName));
+                    else {
+                        unresolvedTypes = true;
+                        types.append(QtMethodMatchType::unresolved(argTypeName));
+                    }
+                }
+            } else {
+                if (argTypeName == "QVariant")
+                    types.append(QtMethodMatchType::variant());
+                else
+                    types.append(QtMethodMatchType::metaType(atype, argTypeName));
+            }
+        }
+
+        // If the native method requires more arguments than what was passed from JavaScript
+        if (exec->argumentCount() + 1 < static_cast<unsigned>(types.count())) {
+            qMatchDebug() << "Match:too few args for" << method.signature();
+            tooFewArgs.append(index);
+            continue;
+        }
+
+        if (unresolvedTypes) {
+            qMatchDebug() << "Match:unresolved arg types for" << method.signature();
+            // remember it so we can give an error message later, if necessary
+            unresolved.append(QtMethodMatchData(/*matchDistance=*/INT_MAX, index,
+                                                   types, QVarLengthArray<QVariant, 10>()));
+            continue;
+        }
+
+        // Now convert arguments
+        if (args.count() != types.count())
+            args.resize(types.count());
+
+        QtMethodMatchType retType = types[0];
+        args[0] = QVariant(retType.typeId(), (void *)0); // the return value
+
+        bool converted = true;
+        int matchDistance = 0;
+        for (unsigned i = 0; converted && i + 1 < static_cast<unsigned>(types.count()); ++i) {
+            JSValue arg = i < exec->argumentCount() ? exec->argument(i) : jsUndefined();
+
+            int argdistance = -1;
+            QVariant v = convertValueToQVariant(exec, arg, types.at(i+1).typeId(), &argdistance);
+            if (argdistance >= 0) {
+                matchDistance += argdistance;
+                args[i+1] = v;
+            } else {
+                qMatchDebug() << "failed to convert argument " << i << "type" << types.at(i+1).typeId() << QMetaType::typeName(types.at(i+1).typeId());
+                converted = false;
+            }
+        }
+
+        qMatchDebug() << "Match: " << method.signature() << (converted ? "converted":"failed to convert") << "distance " << matchDistance;
+
+        if (converted) {
+            if ((exec->argumentCount() + 1 == static_cast<unsigned>(types.count()))
+                && (matchDistance == 0)) {
+                // perfect match, use this one
+                chosenIndex = index;
+                break;
+            } else {
+                QtMethodMatchData currentMatch(matchDistance, index, types, args);
+                if (candidates.isEmpty()) {
+                    candidates.append(currentMatch);
+                } else {
+                    QtMethodMatchData bestMatchSoFar = candidates.at(0);
+                    if ((args.count() > bestMatchSoFar.args.count())
+                        || ((args.count() == bestMatchSoFar.args.count())
+                            && (matchDistance <= bestMatchSoFar.matchDistance))) {
+                        candidates.prepend(currentMatch);
+                    } else {
+                        candidates.append(currentMatch);
+                    }
+                }
+            }
+        } else {
+            conversionFailed.append(index);
+        }
+
+        if (!overloads)
+            break;
+    }
+
+    if (chosenIndex == -1 && candidates.count() == 0) {
+        // No valid functions at all - format an error message
+        if (!conversionFailed.isEmpty()) {
+            QString message = QString::fromLatin1("incompatible type of argument(s) in call to %0(); candidates were\n")
+                              .arg(QLatin1String(signature));
+            for (int i = 0; i < conversionFailed.size(); ++i) {
+                if (i > 0)
+                    message += QLatin1String("\n");
+                QMetaMethod mtd = meta->method(conversionFailed.at(i));
+                message += QString::fromLatin1("    %0").arg(QString::fromLatin1(mtd.signature()));
+            }
+            *pError = throwError(exec, createTypeError(exec, message.toLatin1().constData()));
+        } else if (!unresolved.isEmpty()) {
+            QtMethodMatchData argsInstance = unresolved.first();
+            int unresolvedIndex = argsInstance.firstUnresolvedIndex();
+            Q_ASSERT(unresolvedIndex != -1);
+            QtMethodMatchType unresolvedType = argsInstance.types.at(unresolvedIndex);
+            QString message = QString::fromLatin1("cannot call %0(): unknown type `%1'")
+                .arg(QString::fromLatin1(signature))
+                .arg(QLatin1String(unresolvedType.name()));
+            *pError = throwError(exec, createTypeError(exec, message.toLatin1().constData()));
+        } else {
+            QString message = QString::fromLatin1("too few arguments in call to %0(); candidates are\n")
+                              .arg(QLatin1String(signature));
+            for (int i = 0; i < tooFewArgs.size(); ++i) {
+                if (i > 0)
+                    message += QLatin1String("\n");
+                QMetaMethod mtd = meta->method(tooFewArgs.at(i));
+                message += QString::fromLatin1("    %0").arg(QString::fromLatin1(mtd.signature()));
+            }
+            *pError = throwError(exec, createSyntaxError(exec, message.toLatin1().constData()));
+        }
+    }
+
+    if (chosenIndex == -1 && candidates.count() > 0) {
+        QtMethodMatchData bestMatch = candidates.at(0);
+        if ((candidates.size() > 1)
+            && (bestMatch.args.count() == candidates.at(1).args.count())
+            && (bestMatch.matchDistance == candidates.at(1).matchDistance)) {
+            // ambiguous call
+            QString message = QString::fromLatin1("ambiguous call of overloaded function %0(); candidates were\n")
+                                .arg(QLatin1String(signature));
+            for (int i = 0; i < candidates.size(); ++i) {
+                // Only candidate for overload if argument count and match distance is same as best match
+                if (candidates.at(i).args.count() == bestMatch.args.count()
+                    || candidates.at(i).matchDistance == bestMatch.matchDistance) {
+                    if (i > 0)
+                        message += QLatin1String("\n");
+                    QMetaMethod mtd = meta->method(candidates.at(i).index);
+                    message += QString::fromLatin1("    %0").arg(QString::fromLatin1(mtd.signature()));
+                }
+            }
+            *pError = throwError(exec, createTypeError(exec, message.toLatin1().constData()));
+        } else {
+            chosenIndex = bestMatch.index;
+            args = bestMatch.args;
+        }
+    }
+
+    if (chosenIndex != -1) {
+        /* Copy the stuff over */
+        int i;
+        vars.resize(args.count());
+        for (i=0; i < args.count(); i++) {
+            vars[i] = args[i];
+            vvars[i] = vars[i].data();
+        }
+    }
+
+    return chosenIndex;
+}
+
+// Signals are not fuzzy matched as much as methods
+static int findSignalIndex(const QMetaObject* meta, int initialIndex, QByteArray signature)
+{
+    int index = initialIndex;
+    QMetaMethod method = meta->method(index);
+    bool overloads = !signature.contains('(');
+    if (overloads && (method.attributes() & QMetaMethod::Cloned)) {
+        // find the most general method
+        do {
+            method = meta->method(--index);
+        } while (method.attributes() & QMetaMethod::Cloned);
+    }
+    return index;
+}
+
+const ClassInfo QtRuntimeMetaMethod::s_info = { "QtRuntimeMethod", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(QtRuntimeMetaMethod) };
+
+QtRuntimeMetaMethod::QtRuntimeMetaMethod(ExecState* exec, Structure* structure, const Identifier& identifier)
+    : QtRuntimeMethod (new QtRuntimeMetaMethodData(), exec, structure, identifier)
+{
+}
+
+void QtRuntimeMetaMethod::finishCreation(ExecState* exec, const Identifier& identifier, PassRefPtr<QtInstance> instance, int index, const QByteArray& signature, bool allowPrivate)
+{
+    Base::finishCreation(exec, identifier, instance);
+    QW_D(QtRuntimeMetaMethod);
+    d->m_signature = signature;
+    d->m_index = index;
+    d->m_allowPrivate = allowPrivate;
+}
+
+void QtRuntimeMetaMethod::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{
+    QtRuntimeMetaMethod* thisObject = jsCast<QtRuntimeMetaMethod*>(cell);
+    QtRuntimeMethod::visitChildren(thisObject, visitor);
+    QtRuntimeMetaMethodData* d = thisObject->d_func();
+    if (d->m_connect)
+        visitor.append(&d->m_connect);
+    if (d->m_disconnect)
+        visitor.append(&d->m_disconnect);
+}
+
+EncodedJSValue QtRuntimeMetaMethod::call(ExecState* exec)
+{
+    QtRuntimeMetaMethodData* d = static_cast<QtRuntimeMetaMethod *>(exec->callee())->d_func();
+
+    // We're limited to 10 args
+    if (exec->argumentCount() > 10)
+        return JSValue::encode(jsUndefined());
+
+    // We have to pick a method that matches..
+    JSLock lock(SilenceAssertionsOnly);
+
+    QObject *obj = d->m_instance->getObject();
+    if (obj) {
+        QVarLengthArray<QVariant, 10> vargs;
+        void *qargs[11];
+
+        int methodIndex;
+        JSObject* errorObj = 0;
+        if ((methodIndex = findMethodIndex(exec, obj->metaObject(), d->m_signature, d->m_allowPrivate, vargs, (void **)qargs, &errorObj)) != -1) {
+            if (QMetaObject::metacall(obj, QMetaObject::InvokeMetaMethod, methodIndex, qargs) >= 0)
+                return JSValue::encode(jsUndefined());
+
+            if (vargs[0].isValid())
+                return JSValue::encode(convertQVariantToValue(exec, d->m_instance->rootObject(), vargs[0]));
+        }
+
+        if (errorObj)
+            return JSValue::encode(errorObj);
+    } else {
+        return throwVMError(exec, createError(exec, "cannot call function of deleted QObject"));
+    }
+
+    // void functions return undefined
+    return JSValue::encode(jsUndefined());
+}
+
+CallType QtRuntimeMetaMethod::getCallData(JSCell*, CallData& callData)
+{
+    callData.native.function = call;
+    return CallTypeHost;
+}
+
+bool QtRuntimeMetaMethod::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+{
+    QtRuntimeMetaMethod* thisObject = jsCast<QtRuntimeMetaMethod*>(cell);
+    if (propertyName == "connect") {
+        slot.setCustom(thisObject, thisObject->connectGetter);
+        return true;
+    } else if (propertyName == "disconnect") {
+        slot.setCustom(thisObject, thisObject->disconnectGetter);
+        return true;
+    } else if (propertyName == exec->propertyNames().length) {
+        slot.setCustom(thisObject, thisObject->lengthGetter);
+        return true;
+    }
+
+    return QtRuntimeMethod::getOwnPropertySlot(thisObject, exec, propertyName, slot);
+}
+
+bool QtRuntimeMetaMethod::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+    QtRuntimeMetaMethod* thisObject = jsCast<QtRuntimeMetaMethod*>(object);
+    if (propertyName == "connect") {
+        PropertySlot slot;
+        slot.setCustom(thisObject, connectGetter);
+        descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum);
+        return true;
+    }
+
+    if (propertyName == "disconnect") {
+        PropertySlot slot;
+        slot.setCustom(thisObject, disconnectGetter);
+        descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum);
+        return true;
+    }
+
+    if (propertyName == exec->propertyNames().length) {
+        PropertySlot slot;
+        slot.setCustom(thisObject, lengthGetter);
+        descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum);
+        return true;
+    }
+
+    return QtRuntimeMethod::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
+}
+
+void QtRuntimeMetaMethod::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    if (mode == IncludeDontEnumProperties) {
+        propertyNames.add(Identifier(exec, "connect"));
+        propertyNames.add(Identifier(exec, "disconnect"));
+        propertyNames.add(exec->propertyNames().length);
+    }
+
+    QtRuntimeMethod::getOwnPropertyNames(object, exec, propertyNames, mode);
+}
+
+JSValue QtRuntimeMetaMethod::lengthGetter(ExecState*, JSValue, const Identifier&)
+{
+    // QtScript always returns 0
+    return jsNumber(0);
+}
+
+JSValue QtRuntimeMetaMethod::connectGetter(ExecState* exec, JSValue slotBase, const Identifier& ident)
+{
+    QtRuntimeMetaMethod* thisObj = static_cast<QtRuntimeMetaMethod*>(asObject(slotBase));
+    QW_DS(QtRuntimeMetaMethod, thisObj);
+
+    if (!d->m_connect)
+        d->m_connect.set(exec->globalData(), thisObj, QtRuntimeConnectionMethod::create(exec, ident, true, d->m_instance, d->m_index, d->m_signature));
+    return d->m_connect.get();
+}
+
+JSValue QtRuntimeMetaMethod::disconnectGetter(ExecState* exec, JSValue slotBase, const Identifier& ident)
+{
+    QtRuntimeMetaMethod* thisObj = static_cast<QtRuntimeMetaMethod*>(asObject(slotBase));
+    QW_DS(QtRuntimeMetaMethod, thisObj);
+
+    if (!d->m_disconnect)
+        d->m_disconnect.set(exec->globalData(), thisObj, QtRuntimeConnectionMethod::create(exec, ident, false, d->m_instance, d->m_index, d->m_signature));
+    return d->m_disconnect.get();
+}
+
+// ===============
+
+QMultiMap<QObject*, QtConnectionObject*> QtRuntimeConnectionMethod::connections;
+
+const ClassInfo QtRuntimeConnectionMethod::s_info = { "QtRuntimeMethod", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(QtRuntimeConnectionMethod) };
+
+QtRuntimeConnectionMethod::QtRuntimeConnectionMethod(ExecState* exec, Structure* structure, const Identifier& identifier)
+    : QtRuntimeMethod (new QtRuntimeConnectionMethodData(), exec, structure, identifier)
+{
+}
+
+void QtRuntimeConnectionMethod::finishCreation(ExecState* exec, const Identifier& identifier, bool isConnect, PassRefPtr<QtInstance> instance, int index, const QByteArray& signature)
+{
+    Base::finishCreation(exec, identifier, instance);
+    QW_D(QtRuntimeConnectionMethod);
+
+    d->m_signature = signature;
+    d->m_index = index;
+    d->m_isConnect = isConnect;
+}
+
+EncodedJSValue QtRuntimeConnectionMethod::call(ExecState* exec)
+{
+    QtRuntimeConnectionMethodData* d = static_cast<QtRuntimeConnectionMethod *>(exec->callee())->d_func();
+
+    JSLock lock(SilenceAssertionsOnly);
+
+    QObject* sender = d->m_instance->getObject();
+
+    if (sender) {
+
+        JSObject* thisObject = exec->lexicalGlobalObject()->methodTable()->toThisObject(exec->lexicalGlobalObject(), exec);
+        JSObject* funcObject = 0;
+
+        // QtScript checks signalness first, arguments second
+        int signalIndex = -1;
+
+        // Make sure the initial index is a signal
+        QMetaMethod m = sender->metaObject()->method(d->m_index);
+        if (m.methodType() == QMetaMethod::Signal)
+            signalIndex = findSignalIndex(sender->metaObject(), d->m_index, d->m_signature);
+
+        if (signalIndex != -1) {
+            if (exec->argumentCount() == 1) {
+                funcObject = exec->argument(0).toObject(exec);
+                CallData callData;
+                if (funcObject->methodTable()->getCallData(funcObject, callData) == CallTypeNone) {
+                    if (d->m_isConnect)
+                        return throwVMError(exec, createTypeError(exec, "QtMetaMethod.connect: target is not a function"));
+                    else
+                        return throwVMError(exec, createTypeError(exec, "QtMetaMethod.disconnect: target is not a function"));
+                }
+            } else if (exec->argumentCount() >= 2) {
+                if (exec->argument(0).isObject()) {
+                    thisObject = exec->argument(0).toObject(exec);
+
+                    // Get the actual function to call
+                    JSObject *asObj = exec->argument(1).toObject(exec);
+                    CallData callData;
+                    if (asObj->methodTable()->getCallData(asObj, callData) != CallTypeNone) {
+                        // Function version
+                        funcObject = asObj;
+                    } else {
+                        // Convert it to a string
+                        UString funcName = exec->argument(1).toString(exec);
+                        Identifier funcIdent(exec, funcName);
+
+                        // ### DropAllLocks
+                        // This is resolved at this point in QtScript
+                        JSValue val = thisObject->get(exec, funcIdent);
+                        JSObject* asFuncObj = val.toObject(exec);
+
+                        if (asFuncObj->methodTable()->getCallData(asFuncObj, callData) != CallTypeNone) {
+                            funcObject = asFuncObj;
+                        } else {
+                            if (d->m_isConnect)
+                                return throwVMError(exec, createTypeError(exec, "QtMetaMethod.connect: target is not a function"));
+                            else
+                                return throwVMError(exec, createTypeError(exec, "QtMetaMethod.disconnect: target is not a function"));
+                        }
+                    }
+                } else {
+                    if (d->m_isConnect)
+                        return throwVMError(exec, createTypeError(exec, "QtMetaMethod.connect: thisObject is not an object"));
+                    else
+                        return throwVMError(exec, createTypeError(exec, "QtMetaMethod.disconnect: thisObject is not an object"));
+                }
+            } else {
+                if (d->m_isConnect)
+                    return throwVMError(exec, createError(exec, "QtMetaMethod.connect: no arguments given"));
+                else
+                    return throwVMError(exec, createError(exec, "QtMetaMethod.disconnect: no arguments given"));
+            }
+
+            if (d->m_isConnect) {
+                // to connect, we need:
+                //  target object [from ctor]
+                //  target signal index etc. [from ctor]
+                //  receiver function [from arguments]
+                //  receiver this object [from arguments]
+
+                ExecState* globalExec = exec->lexicalGlobalObject()->globalExec();
+                QtConnectionObject* conn = QtConnectionObject::createWithInternalJSC(globalExec, d->m_instance, signalIndex, thisObject, funcObject);
+                bool ok = QMetaObject::connect(sender, signalIndex, conn, conn->metaObject()->methodOffset());
+                if (!ok) {
+                    delete conn;
+                    QString msg = QString(QLatin1String("QtMetaMethod.connect: failed to connect to %1::%2()"))
+                            .arg(QLatin1String(sender->metaObject()->className()))
+                            .arg(QLatin1String(d->m_signature));
+                    return throwVMError(exec, createError(exec, msg.toLatin1().constData()));
+                }
+                else {
+                    // Store connection
+                    connections.insert(sender, conn);
+                }
+            } else {
+                // Now to find our previous connection object. Hmm.
+                QList<QtConnectionObject*> conns = connections.values(sender);
+                bool ret = false;
+
+                JSContextRef context = ::toRef(exec);
+                JSObjectRef receiver = ::toRef(thisObject);
+                JSObjectRef receiverFunction = ::toRef(funcObject);
+
+                foreach(QtConnectionObject* conn, conns) {
+                    // Is this the right connection?
+                    if (conn->match(context, sender, signalIndex, receiver, receiverFunction)) {
+                        // Yep, disconnect it
+                        QMetaObject::disconnect(sender, signalIndex, conn, conn->metaObject()->methodOffset());
+                        delete conn; // this will also remove it from the map
+                        ret = true;
+                        break;
+                    }
+                }
+
+                if (!ret) {
+                    QString msg = QString(QLatin1String("QtMetaMethod.disconnect: failed to disconnect from %1::%2()"))
+                            .arg(QLatin1String(sender->metaObject()->className()))
+                            .arg(QLatin1String(d->m_signature));
+                    return throwVMError(exec, createError(exec, msg.toLatin1().constData()));
+                }
+            }
+        } else {
+            QString msg = QString(QLatin1String("QtMetaMethod.%1: %2::%3() is not a signal"))
+                    .arg(QLatin1String(d->m_isConnect ? "connect": "disconnect"))
+                    .arg(QLatin1String(sender->metaObject()->className()))
+                    .arg(QLatin1String(d->m_signature));
+            return throwVMError(exec, createTypeError(exec, msg.toLatin1().constData()));
+        }
+    } else {
+        return throwVMError(exec, createError(exec, "cannot call function of deleted QObject"));
+    }
+
+    return JSValue::encode(jsUndefined());
+}
+
+CallType QtRuntimeConnectionMethod::getCallData(JSCell*, CallData& callData)
+{
+    callData.native.function = call;
+    return CallTypeHost;
+}
+
+bool QtRuntimeConnectionMethod::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+{
+    QtRuntimeConnectionMethod* thisObject = jsCast<QtRuntimeConnectionMethod*>(cell);
+    if (propertyName == exec->propertyNames().length) {
+        slot.setCustom(thisObject, thisObject->lengthGetter);
+        return true;
+    }
+
+    return QtRuntimeMethod::getOwnPropertySlot(thisObject, exec, propertyName, slot);
+}
+
+bool QtRuntimeConnectionMethod::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+    QtRuntimeConnectionMethod* thisObject = jsCast<QtRuntimeConnectionMethod*>(object);
+    if (propertyName == exec->propertyNames().length) {
+        PropertySlot slot;
+        slot.setCustom(thisObject, lengthGetter);
+        descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum);
+        return true;
+    }
+
+    return QtRuntimeMethod::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
+}
+
+void QtRuntimeConnectionMethod::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    if (mode == IncludeDontEnumProperties)
+        propertyNames.add(exec->propertyNames().length);
+
+    QtRuntimeMethod::getOwnPropertyNames(object, exec, propertyNames, mode);
+}
+
+JSValue QtRuntimeConnectionMethod::lengthGetter(ExecState*, JSValue, const Identifier&)
+{
+    // we have one formal argument, and one optional
+    return jsNumber(1);
+}
+
+// ===============
+
+QtConnectionObject::QtConnectionObject(JSContextRef context, PassRefPtr<QtInstance> senderInstance, int signalIndex, JSObjectRef receiver, JSObjectRef receiverFunction)
+    : QObject(senderInstance->getObject())
+    , m_context(context)
+    , m_senderInstance(senderInstance)
+    , m_originalSender(m_senderInstance->getObject())
+    , m_signalIndex(signalIndex)
+    , m_receiver(receiver)
+    , m_receiverFunction(receiverFunction)
+{
+    JSValueProtect(m_context, m_receiver);
+    JSValueProtect(m_context, m_receiverFunction);
+}
+
+QtConnectionObject::~QtConnectionObject()
+{
+    // We can safely use m_originalSender because connection object will never outlive the sender,
+    // which is its QObject parent.
+    QtRuntimeConnectionMethod::connections.remove(m_originalSender, this);
+
+    JSValueUnprotect(m_context, m_receiver);
+    JSValueUnprotect(m_context, m_receiverFunction);
+}
+
+static const uint qt_meta_data_QtConnectionObject[] = {
+
+ // content:
+       1,       // revision
+       0,       // classname
+       0,    0, // classinfo
+       1,   10, // methods
+       0,    0, // properties
+       0,    0, // enums/sets
+
+ // slots: signature, parameters, type, tag, flags
+      28,   27,   27,   27, 0x0a,
+
+       0        // eod
+};
+
+static const char qt_meta_stringdata_QtConnectionObject[] = {
+    "JSC::Bindings::QtConnectionObject\0\0execute()\0"
+};
+
+const QMetaObject QtConnectionObject::staticMetaObject = {
+    { &QObject::staticMetaObject, qt_meta_stringdata_QtConnectionObject,
+      qt_meta_data_QtConnectionObject, 0 }
+};
+
+const QMetaObject *QtConnectionObject::metaObject() const
+{
+    return &staticMetaObject;
+}
+
+void *QtConnectionObject::qt_metacast(const char *_clname)
+{
+    if (!_clname) return 0;
+    if (!strcmp(_clname, qt_meta_stringdata_QtConnectionObject))
+        return static_cast<void*>(const_cast<QtConnectionObject*>(this));
+    return QObject::qt_metacast(_clname);
+}
+
+// This is what moc would generate except by the fact that we pass all arguments to our execute() slot.
+int QtConnectionObject::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
+{
+    _id = QObject::qt_metacall(_c, _id, _a);
+    if (_id < 0)
+        return _id;
+    if (_c == QMetaObject::InvokeMetaMethod) {
+        switch (_id) {
+        case 0: execute(_a); break;
+        }
+        _id -= 1;
+    }
+    return _id;
+}
+
+static bool isJavaScriptFunction(JSObjectRef object)
+{
+    CallData callData;
+    JSObject* jsObject = toJS(object);
+    return jsObject->methodTable()->getCallData(jsObject, callData) == CallTypeJS;
+}
+
+void QtConnectionObject::execute(void** argv)
+{
+    QObject* sender = m_senderInstance->getObject();
+    if (!sender) {
+        qWarning() << "sender deleted, cannot deliver signal";
+        return;
+    }
+
+    ASSERT(sender == m_originalSender);
+
+    const QMetaObject* meta = sender->metaObject();
+    const QMetaMethod method = meta->method(m_signalIndex);
+
+    QList<QByteArray> parameterTypes = method.parameterTypes();
+
+    JSValueRef* ignoredException = 0;
+    JSRetainPtr<JSStringRef> lengthProperty(JSStringCreateWithUTF8CString("length"));
+    int receiverLength = int(JSValueToNumber(m_context, JSObjectGetProperty(m_context, m_receiverFunction, lengthProperty.get(), ignoredException), ignoredException));
+    int argc = qMax(parameterTypes.count(), receiverLength);
+    WTF::Vector<JSValueRef> args(argc);
+
+    // TODO: remove once conversion functions use JSC API.
+    ExecState* exec = ::toJS(m_context);
+    RefPtr<RootObject> rootObject = m_senderInstance->rootObject();
+
+    for (int i = 0; i < argc; i++) {
+        int argType = QMetaType::type(parameterTypes.at(i));
+        args[i] = ::toRef(exec, convertQVariantToValue(exec, rootObject, QVariant(argType, argv[i+1])));
+    }
+
+    const bool updateQtSender = isJavaScriptFunction(m_receiverFunction);
+    if (updateQtSender)
+        QtInstance::qtSenderStack()->push(QObject::sender());
+
+    JSObjectCallAsFunction(m_context, m_receiverFunction, m_receiver, argc, args.data(), 0);
+
+    if (updateQtSender)
+        QtInstance::qtSenderStack()->pop();
+}
+
+bool QtConnectionObject::match(JSContextRef context, QObject* sender, int signalIndex, JSObjectRef receiver, JSObjectRef receiverFunction)
+{
+    if (sender != m_originalSender || signalIndex != m_signalIndex)
+        return false;
+    JSValueRef* ignoredException = 0;
+    const bool receiverMatch = (!receiver && !m_receiver) || JSValueIsEqual(context, receiver, m_receiver, ignoredException);
+    return receiverMatch && JSValueIsEqual(context, receiverFunction, m_receiverFunction, ignoredException);
+}
+
+QtConnectionObject* QtConnectionObject::createWithInternalJSC(ExecState* exec, PassRefPtr<QtInstance> senderInstance, int signalIndex, JSObject* receiver, JSObject* receiverFunction)
+{
+    return new QtConnectionObject(::toRef(exec), senderInstance, signalIndex, ::toRef(receiver), ::toRef(receiverFunction));
+}
+
+// ===============
+
+template <typename T> QtArray<T>::QtArray(QList<T> list, QMetaType::Type type, PassRefPtr<RootObject> rootObject)
+    : Array(rootObject)
+    , m_list(list)
+    , m_type(type)
+{
+    m_length = m_list.count();
+}
+
+template <typename T> QtArray<T>::~QtArray ()
+{
+}
+
+template <typename T> RootObject* QtArray<T>::rootObject() const
+{
+    return m_rootObject && m_rootObject->isValid() ? m_rootObject.get() : 0;
+}
+
+template <typename T> void QtArray<T>::setValueAt(ExecState* exec, unsigned index, JSValue aValue) const
+{
+    // QtScript sets the value, but doesn't forward it to the original source
+    // (e.g. if you do 'object.intList[5] = 6', the object is not updated, but the
+    // copy of the list is).
+    int dist = -1;
+    QVariant val = convertValueToQVariant(exec, aValue, m_type, &dist);
+
+    if (dist >= 0) {
+        m_list[index] = val.value<T>();
+    }
+}
+
+
+template <typename T> JSValue QtArray<T>::valueAt(ExecState *exec, unsigned int index) const
+{
+    if (index < m_length) {
+        T val = m_list.at(index);
+        return convertQVariantToValue(exec, rootObject(), QVariant::fromValue(val));
+    }
+
+    return jsUndefined();
+}
+
+// ===============
+
+} }