implement a fair amount of the QScriptClass functionality

Enumeration is missing, as is the ability to change the class
of an object after it has been created.

4 files changed, 209 insertions, 15 deletions

diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp
index e8a2436..be6cdba 100644
--- a/src/script/api/qscriptengine.cpp
+++ b/src/script/api/qscriptengine.cpp
@@ -19,6 +19,7 @@
 #include "qscriptstring_p.h"
 #include "qscriptvalue_p.h"
 #include "qscriptvalueiterator.h"
+#include "qscriptclass.h"
 
 #include <QtCore/qstringlist.h>
 #include <QtCore/qmetaobject.h>
@@ -292,6 +293,122 @@ QString qtStringFromJSCUString(const JSC::UString &str)
     return QString(reinterpret_cast<const QChar*>(str.data()), str.size());
 }
 
+// ### move
+const JSC::ClassInfo ClassObject::info = { "QScript::ClassObject", 0, 0, 0 };
+
+ClassObject::ClassObject(QScriptClass *scriptClass, WTF::PassRefPtr<JSC::Structure> sid)
+    : JSC::JSObject(sid), data(new Data(scriptClass))
+{
+}
+
+ClassObject::~ClassObject()
+{
+    delete data;
+}
+
+bool ClassObject::getOwnPropertySlot(JSC::ExecState *exec,
+                                     const JSC::Identifier &propertyName,
+                                     JSC::PropertySlot &slot)
+{
+    QScriptEnginePrivate *engine = static_cast<QScript::GlobalObject*>(exec->dynamicGlobalObject())->engine;
+    QScriptValue scriptObject = engine->scriptValueFromJSCValue(this);
+    QString name = qtStringFromJSCUString(propertyName.ustring());
+    QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
+    uint id = 0;
+    QScriptClass::QueryFlags flags = data->scriptClass->queryProperty(
+        scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
+    if (flags & QScriptClass::HandlesReadAccess) {
+        QScriptValue value = data->scriptClass->property(scriptObject, scriptName, id);
+        slot.setValue(engine->scriptValueToJSCValue(value));
+        return true;
+    }
+    return JSC::JSObject::getOwnPropertySlot(exec, propertyName, slot);
+}
+
+void ClassObject::put(JSC::ExecState *exec, const JSC::Identifier &propertyName,
+                      JSC::JSValue value, JSC::PutPropertySlot &slot)
+{
+    QScriptEnginePrivate *engine = static_cast<QScript::GlobalObject*>(exec->dynamicGlobalObject())->engine;
+    QScriptValue scriptObject = engine->scriptValueFromJSCValue(this);
+    QString name = qtStringFromJSCUString(propertyName.ustring());
+    QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
+    uint id = 0;
+    QScriptClass::QueryFlags flags = data->scriptClass->queryProperty(
+        scriptObject, scriptName, QScriptClass::HandlesWriteAccess, &id);
+    if (flags & QScriptClass::HandlesWriteAccess) {
+        data->scriptClass->setProperty(scriptObject, scriptName, id, engine->scriptValueFromJSCValue(value));
+        return;
+    }
+    JSC::JSObject::put(exec, propertyName, value, slot);
+}
+
+bool ClassObject::deleteProperty(JSC::ExecState *exec,
+                                 const JSC::Identifier &propertyName)
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO, "implement me");
+    return JSC::JSObject::deleteProperty(exec, propertyName);
+}
+
+bool ClassObject::getPropertyAttributes(JSC::ExecState *exec,
+                                        const JSC::Identifier &propertyName,
+                                        unsigned &attribs) const
+{
+    QScriptEnginePrivate *engine = static_cast<QScript::GlobalObject*>(exec->dynamicGlobalObject())->engine;
+    QScriptValue scriptObject = engine->scriptValueFromJSCValue(this);
+    QString name = qtStringFromJSCUString(propertyName.ustring());
+    QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
+    uint id = 0;
+    QScriptClass::QueryFlags flags = data->scriptClass->queryProperty(
+        scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
+    if (flags & QScriptClass::HandlesReadAccess) {
+        QScriptValue::PropertyFlags flags = data->scriptClass->propertyFlags(scriptObject, scriptName, id);
+        attribs = 0;
+        if (flags & QScriptValue::ReadOnly)
+            attribs |= JSC::ReadOnly;
+        if (flags & QScriptValue::SkipInEnumeration)
+            attribs |= JSC::DontEnum;
+        if (flags & QScriptValue::Undeletable)
+            attribs |= JSC::DontDelete;
+        if (flags & QScriptValue::PropertyGetter)
+            attribs |= JSC::Getter;
+        if (flags & QScriptValue::PropertySetter)
+            attribs |= JSC::Setter;
+        attribs |= flags & QScriptValue::UserRange;
+        return true;
+    }
+    return JSC::JSObject::getPropertyAttributes(exec, propertyName, attribs);
+}
+
+void ClassObject::getPropertyNames(JSC::ExecState *exec,
+                                   JSC::PropertyNameArray &propertyNames)
+{
+    qWarning("Enumeration of custom script objects not implemented");
+    JSC::JSObject::getPropertyNames(exec, propertyNames);
+}
+
+const JSC::ClassInfo* ClassObject::classInfo() const
+{
+    // ### respect QScriptClass::name()
+    return &info;
+}
+
+QScriptClass *ClassObject::scriptClass() const
+{
+    return data->scriptClass;
+}
+
+void ClassObject::setScriptClass(QScriptClass *scriptClass)
+{
+    data->scriptClass = scriptClass;
+}
+
+ClassObjectPrototype::ClassObjectPrototype(JSC::ExecState* exec, WTF::PassRefPtr<JSC::Structure> structure,
+                                           JSC::Structure* prototypeFunctionStructure)
+    : ClassObject(/*scriptClass=*/0, structure)
+{
+}
+
+
 bool isFunction(JSC::JSValue value)
 {
     if (!value || !value.isObject())
@@ -667,11 +784,16 @@ QScriptEnginePrivate::QScriptEnginePrivate()
 
     qobjectPrototype = new (exec) QScript::QObjectPrototype(exec, QScript::QObjectPrototype::createStructure(globalObject->objectPrototype()), globalObject->prototypeFunctionStructure());
     qobjectWrapperObjectStructure = QScript::QObjectWrapperObject::createStructure(qobjectPrototype);
+
     qmetaobjectPrototype = new (exec) QScript::QMetaObjectPrototype(exec, QScript::QMetaObjectPrototype::createStructure(globalObject->objectPrototype()), globalObject->prototypeFunctionStructure());
     qmetaobjectWrapperObjectStructure = QScript::QMetaObjectWrapperObject::createStructure(qmetaobjectPrototype);
+
     variantPrototype = new (exec) QScript::QVariantPrototype(exec, QScript::QVariantPrototype::createStructure(globalObject->objectPrototype()), globalObject->prototypeFunctionStructure());
     variantWrapperObjectStructure = QScript::QVariantWrapperObject::createStructure(variantPrototype);
 
+    classObjectPrototype = new (exec) QScript::ClassObjectPrototype(exec, QScript::ClassObjectPrototype::createStructure(globalObject->objectPrototype()), globalObject->prototypeFunctionStructure());
+    classObjectStructure = QScript::ClassObject::createStructure(classObjectPrototype);
+
     globalObject->putDirectFunction(exec, new (exec)JSC::NativeFunctionWrapper(exec, globalObject->prototypeFunctionStructure(), 1, JSC::Identifier(exec, "print"), QScript::functionPrint));
     globalObject->putDirectFunction(exec, new (exec)JSC::NativeFunctionWrapper(exec, globalObject->prototypeFunctionStructure(), 0, JSC::Identifier(exec, "gc"), QScript::functionGC));
     globalObject->putDirectFunction(exec, new (exec)JSC::NativeFunctionWrapper(exec, globalObject->prototypeFunctionStructure(), 0, JSC::Identifier(exec, "version"), QScript::functionVersion));
@@ -1386,11 +1508,15 @@ QScriptValue QScriptEngine::newObject()
 QScriptValue QScriptEngine::newObject(QScriptClass *scriptClass,
                                       const QScriptValue &data)
 {
-    Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented");
-    // use an internal map from JSObject -> data
-    Q_UNUSED(scriptClass);
-    Q_UNUSED(data);
-    return QScriptValue();
+    Q_D(QScriptEngine);
+    JSC::ExecState* exec = d->globalObject->globalExec();
+    QScript::ClassObject *result = new (exec) QScript::ClassObject(scriptClass, d->classObjectStructure);
+    QScriptValue scriptObject = d->scriptValueFromJSCValue(result);
+    scriptObject.setData(data);
+    QScriptValue proto = scriptClass->prototype();
+    if (proto.isValid())
+        scriptObject.setPrototype(proto);
+    return scriptObject;
 }
 
 /*!
diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h
index 8a81fd3..b1b0d2d 100644
--- a/src/script/api/qscriptengine_p.h
+++ b/src/script/api/qscriptengine_p.h
@@ -48,6 +48,7 @@ namespace QScript
     class QObjectPrototype;
     class QMetaObjectPrototype;
     class QVariantPrototype;
+    class ClassObjectPrototype;
 #ifndef QT_NO_QOBJECT
     class QObjectData;
 #endif
@@ -142,11 +143,16 @@ public:
 
     QScript::QObjectPrototype *qobjectPrototype;
     WTF::RefPtr<JSC::Structure> qobjectWrapperObjectStructure;
+
     QScript::QMetaObjectPrototype *qmetaobjectPrototype;
     WTF::RefPtr<JSC::Structure> qmetaobjectWrapperObjectStructure;
+
     QScript::QVariantPrototype *variantPrototype;
     WTF::RefPtr<JSC::Structure> variantWrapperObjectStructure;
 
+    QScript::ClassObjectPrototype *classObjectPrototype;
+    WTF::RefPtr<JSC::Structure> classObjectStructure;
+
     QScriptEngineAgent *agent;
     QHash<JSC::JSCell*, QBasicAtomicInt> keepAliveValues;
     QHash<int, QScriptTypeInfo*> m_typeInfos;
@@ -176,7 +182,57 @@ public:
     QScriptEnginePrivate *engine;
 };
 
-}
+// ### move
+class ClassObject : public JSC::JSObject
+{
+public:
+     // work around CELL_SIZE limitation
+    struct Data
+    {
+        QScriptClass *scriptClass;
+
+        Data(QScriptClass *sc)
+            : scriptClass(sc) {}
+    };
+
+    explicit ClassObject(QScriptClass *scriptClass,
+                         WTF::PassRefPtr<JSC::Structure> sid);
+    ~ClassObject();
+    
+    virtual bool getOwnPropertySlot(JSC::ExecState*,
+                                    const JSC::Identifier& propertyName,
+                                    JSC::PropertySlot&);
+    virtual void put(JSC::ExecState* exec, const JSC::Identifier& propertyName,
+                     JSC::JSValue, JSC::PutPropertySlot&);
+    virtual bool deleteProperty(JSC::ExecState*,
+                                const JSC::Identifier& propertyName);
+    virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&,
+                                       unsigned&) const;
+    virtual void getPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&);
+
+    virtual const JSC::ClassInfo* classInfo() const;
+    static const JSC::ClassInfo info;
+
+    static WTF::PassRefPtr<JSC::Structure> createStructure(JSC::JSValue prototype)
+    {
+        return JSC::Structure::create(prototype, JSC::TypeInfo(JSC::ObjectType));
+    }
+
+    QScriptClass *scriptClass() const;
+    void setScriptClass(QScriptClass *scriptClass);
+
+private:
+    Data *data;
+};
+
+class ClassObjectPrototype : public ClassObject
+{
+public:
+    ClassObjectPrototype(JSC::ExecState*, WTF::PassRefPtr<JSC::Structure>,
+                         JSC::Structure* prototypeFunctionStructure);
+};
+
+} // namespace QScript
 
 QT_END_NAMESPACE
 
diff --git a/src/script/api/qscriptstring.cpp b/src/script/api/qscriptstring.cpp
index 89ac4ac..ce38d81 100644
--- a/src/script/api/qscriptstring.cpp
+++ b/src/script/api/qscriptstring.cpp
@@ -138,7 +138,9 @@ bool QScriptString::isValid() const
 bool QScriptString::operator==(const QScriptString &other) const
 {
     Q_D(const QScriptString);
-    return (d == other.d_func());
+    // ### change back once proper string handles are implemented
+    return toString() == other.toString();
+//    return (d == other.d_func());
 }
 
 /*!
@@ -148,7 +150,9 @@ bool QScriptString::operator==(const QScriptString &other) const
 bool QScriptString::operator!=(const QScriptString &other) const
 {
     Q_D(const QScriptString);
-    return (d != other.d_func());
+    // ### change back once proper string handles are implemented
+    return toString() != other.toString();
+//    return (d != other.d_func());
 }
 
 /*!
diff --git a/src/script/api/qscriptvalue.cpp b/src/script/api/qscriptvalue.cpp
index 4d8f18a..09f0d0c 100644
--- a/src/script/api/qscriptvalue.cpp
+++ b/src/script/api/qscriptvalue.cpp
@@ -2323,11 +2323,13 @@ void QScriptValue::setData(const QScriptValue &data)
 */
 QScriptClass *QScriptValue::scriptClass() const
 {
-    if (isObject())
+    Q_D(const QScriptValue);
+    if (!d || !d->isJSC() || !d->jscValue.isObject())
         return 0;
-    // ### implement me
-    Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented");
-    return 0;
+    if (!d->jscValue.isObject(&QScript::ClassObject::info))
+        return 0;
+    QScript::ClassObject *instance = static_cast<QScript::ClassObject*>(JSC::asObject(d->jscValue));
+    return instance->scriptClass();
 }
 
 /*!
@@ -2345,9 +2347,15 @@ QScriptClass *QScriptValue::scriptClass() const
 */
 void QScriptValue::setScriptClass(QScriptClass *scriptClass)
 {
-    Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented");
-    // no idea... use a "hidden" property?
-    Q_UNUSED(scriptClass);
+    Q_D(QScriptValue);
+    if (!d || !d->isJSC() || !d->jscValue.isObject())
+        return;
+    if (!d->jscValue.isObject(&QScript::ClassObject::info)) {
+        qWarning("QScriptValue::setScriptClass() not implemented");
+        return;
+    }
+    QScript::ClassObject *instance = static_cast<QScript::ClassObject*>(JSC::asObject(d->jscValue));
+    instance->setScriptClass(scriptClass);
 }
 
 /*!