diff options
18 files changed, 656 insertions, 43 deletions
diff --git a/qmake/generators/win32/msbuild_objectmodel.cpp b/qmake/generators/win32/msbuild_objectmodel.cpp index bf874b2..75fc910 100644 --- a/qmake/generators/win32/msbuild_objectmodel.cpp +++ b/qmake/generators/win32/msbuild_objectmodel.cpp @@ -385,7 +385,6 @@ VCXCLCompilerTool::VCXCLCompilerTool() DisableLanguageExtensions(unset), EnableFiberSafeOptimizations(unset), EnablePREfast(unset), - ExceptionHandling("false"), ExpandAttributedSource(unset), FloatingPointExceptions(unset), ForceConformanceInForLoopScope(unset), diff --git a/qmake/generators/win32/msvc_objectmodel.cpp b/qmake/generators/win32/msvc_objectmodel.cpp index e23e119..1e060a0 100644 --- a/qmake/generators/win32/msvc_objectmodel.cpp +++ b/qmake/generators/win32/msvc_objectmodel.cpp @@ -360,11 +360,8 @@ inline XmlOutput::xml_output xformUsePrecompiledHeaderForNET2005(pchOption whatP inline XmlOutput::xml_output xformExceptionHandlingNET2005(exceptionHandling eh, DotNET compilerVersion) { - if (eh == ehDefault) { - if (compilerVersion >= NET2005) - return attrE(_ExceptionHandling, ehNone); - return attrS(_ExceptionHandling, "false"); - } + if (eh == ehDefault) + return noxml(); if (compilerVersion >= NET2005) return attrE(_ExceptionHandling, eh); diff --git a/qmake/generators/win32/msvc_vcproj.cpp b/qmake/generators/win32/msvc_vcproj.cpp index 35e4896..8686ae8 100644 --- a/qmake/generators/win32/msvc_vcproj.cpp +++ b/qmake/generators/win32/msvc_vcproj.cpp @@ -900,6 +900,7 @@ void VcprojGenerator::initCompilerTool() conf.compiler.AssemblerListingLocation = placement ; conf.compiler.ProgramDataBaseFileName = ".\\" ; conf.compiler.ObjectFile = placement ; + conf.compiler.ExceptionHandling = ehNone; // PCH if (usePCH) { conf.compiler.UsePrecompiledHeader = pchUseUsingSpecific; diff --git a/qmake/generators/win32/msvc_vcxproj.cpp b/qmake/generators/win32/msvc_vcxproj.cpp index 05c1511..f68a435 100644 --- a/qmake/generators/win32/msvc_vcxproj.cpp +++ b/qmake/generators/win32/msvc_vcxproj.cpp @@ -274,6 +274,7 @@ void VcxprojGenerator::initCompilerTool() conf.compiler.AssemblerListingLocation = placement ; conf.compiler.ProgramDataBaseFileName = ".\\" ; conf.compiler.ObjectFileName = placement ; + conf.compiler.ExceptionHandling = "false"; // PCH if (usePCH) { conf.compiler.PrecompiledHeader = "Use"; diff --git a/src/declarative/qml/qdeclarativecontext.cpp b/src/declarative/qml/qdeclarativecontext.cpp index 2221d78..60e9dd3 100644 --- a/src/declarative/qml/qdeclarativecontext.cpp +++ b/src/declarative/qml/qdeclarativecontext.cpp @@ -660,10 +660,9 @@ void QDeclarativeContextData::addImportedScript(const QDeclarativeParser::Object QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine); scriptContext->pushScope(enginePriv->contextClass->newUrlContext(url)); - scriptContext->pushScope(enginePriv->globalClass->globalObject()); + scriptContext->pushScope(enginePriv->globalClass->staticGlobalObject()); - QScriptValue scope = scriptEngine->newObject(); - scriptContext->setActivationObject(scope); + QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(scriptEngine); scriptContext->pushScope(scope); scriptEngine->evaluate(code, url, 1); @@ -686,10 +685,9 @@ void QDeclarativeContextData::addImportedScript(const QDeclarativeParser::Object QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine); scriptContext->pushScope(enginePriv->contextClass->newUrlContext(this, 0, url)); - scriptContext->pushScope(enginePriv->globalClass->globalObject()); - - QScriptValue scope = scriptEngine->newObject(); - scriptContext->setActivationObject(scope); + scriptContext->pushScope(enginePriv->globalClass->staticGlobalObject()); + + QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(scriptEngine); scriptContext->pushScope(scope); scriptEngine->evaluate(code, url, 1); diff --git a/src/declarative/qml/qdeclarativeexpression.cpp b/src/declarative/qml/qdeclarativeexpression.cpp index b1aecfa..8ae5f2f 100644 --- a/src/declarative/qml/qdeclarativeexpression.cpp +++ b/src/declarative/qml/qdeclarativeexpression.cpp @@ -145,7 +145,7 @@ void QDeclarativeExpressionPrivate::init(QDeclarativeContextData *ctxt, void *ex if (!dd->cachedClosures.at(progIdx)) { QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine); scriptContext->pushScope(ep->contextClass->newSharedContext()); - scriptContext->pushScope(ep->globalClass->globalObject()); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); dd->cachedClosures[progIdx] = new QScriptValue(scriptEngine->evaluate(data->expression, data->url, data->line)); scriptEngine->popContext(); } @@ -188,7 +188,7 @@ QScriptValue QDeclarativeExpressionPrivate::evalInObjectScope(QDeclarativeContex } else { scriptContext->pushScope(ep->contextClass->newContext(context, object)); } - scriptContext->pushScope(ep->globalClass->globalObject()); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); QScriptValue rv = ep->scriptEngine.evaluate(program, fileName, lineNumber); ep->scriptEngine.popContext(); return rv; @@ -206,7 +206,7 @@ QScriptValue QDeclarativeExpressionPrivate::evalInObjectScope(QDeclarativeContex } else { scriptContext->pushScope(ep->contextClass->newContext(context, object)); } - scriptContext->pushScope(ep->globalClass->globalObject()); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); QScriptValue rv = ep->scriptEngine.evaluate(program); ep->scriptEngine.popContext(); return rv; @@ -369,7 +369,7 @@ QScriptValue QDeclarativeExpressionPrivate::eval(QObject *secondaryScope, bool * QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine); data->expressionContext = ep->contextClass->newContext(data->context(), data->me); scriptContext->pushScope(data->expressionContext); - scriptContext->pushScope(ep->globalClass->globalObject()); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); if (data->expressionRewritten) { data->expressionFunction = scriptEngine->evaluate(data->expression, diff --git a/src/declarative/qml/qdeclarativeglobalscriptclass.cpp b/src/declarative/qml/qdeclarativeglobalscriptclass.cpp index 6e107fb..39ea101 100644 --- a/src/declarative/qml/qdeclarativeglobalscriptclass.cpp +++ b/src/declarative/qml/qdeclarativeglobalscriptclass.cpp @@ -41,10 +41,13 @@ #include "private/qdeclarativeglobalscriptclass_p.h" +#include <QtCore/qvector.h> #include <QtScript/qscriptstring.h> #include <QtScript/qscriptengine.h> #include <QtScript/qscriptvalueiterator.h> +#include <private/qscriptdeclarativeclass_p.h> + QT_BEGIN_NAMESPACE /* @@ -55,23 +58,31 @@ QDeclarativeGlobalScriptClass::QDeclarativeGlobalScriptClass(QScriptEngine *engi { QString eval = QLatin1String("eval"); - QScriptValue globalObject = engine->globalObject(); + QScriptValue originalGlobalObject = engine->globalObject(); - m_globalObject = engine->newObject(); QScriptValue newGlobalObject = engine->newObject(); - QScriptValueIterator iter(globalObject); - - while (iter.hasNext()) { - iter.next(); - - QString name = iter.name(); - - if (name != eval) - m_globalObject.setProperty(iter.scriptName(), iter.value()); - newGlobalObject.setProperty(iter.scriptName(), iter.value()); - - m_illegalNames.insert(name); + { + QScriptValueIterator iter(originalGlobalObject); + QVector<QString> names; + QVector<QScriptValue> values; + QVector<QScriptValue::PropertyFlags> flags; + while (iter.hasNext()) { + iter.next(); + + QString name = iter.name(); + + if (name != eval) { + names.append(name); + values.append(iter.value()); + flags.append(iter.flags() | QScriptValue::Undeletable); + } + newGlobalObject.setProperty(iter.scriptName(), iter.value()); + + m_illegalNames.insert(name); + } + m_staticGlobalObject = QScriptDeclarativeClass::newStaticScopeObject( + engine, names.size(), names.constData(), values.constData(), flags.constData()); } newGlobalObject.setScriptClass(this); diff --git a/src/declarative/qml/qdeclarativeglobalscriptclass_p.h b/src/declarative/qml/qdeclarativeglobalscriptclass_p.h index 7690edd..414bf02 100644 --- a/src/declarative/qml/qdeclarativeglobalscriptclass_p.h +++ b/src/declarative/qml/qdeclarativeglobalscriptclass_p.h @@ -75,13 +75,13 @@ public: void explicitSetProperty(const QString &, const QScriptValue &); - const QScriptValue &globalObject() const { return m_globalObject; } + const QScriptValue &staticGlobalObject() const { return m_staticGlobalObject; } const QSet<QString> &illegalNames() const { return m_illegalNames; } private: QSet<QString> m_illegalNames; - QScriptValue m_globalObject; + QScriptValue m_staticGlobalObject; }; QT_END_NAMESPACE diff --git a/src/declarative/qml/qdeclarativeinclude.cpp b/src/declarative/qml/qdeclarativeinclude.cpp index c29005a..f26b54f 100644 --- a/src/declarative/qml/qdeclarativeinclude.cpp +++ b/src/declarative/qml/qdeclarativeinclude.cpp @@ -240,7 +240,7 @@ QScriptValue QDeclarativeInclude::include(QScriptContext *ctxt, QScriptEngine *e QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(engine); scriptContext->pushScope(ep->contextClass->newUrlContext(context, 0, urlString)); - scriptContext->pushScope(ep->globalClass->globalObject()); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); QScriptValue scope = QScriptDeclarativeClass::scopeChainValue(ctxt, -5); scriptContext->pushScope(scope); scriptContext->setActivationObject(scope); diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp index e2999c1..655026c 100644 --- a/src/script/api/qscriptengine.cpp +++ b/src/script/api/qscriptengine.cpp @@ -64,6 +64,7 @@ #include "bridge/qscriptqobject_p.h" #include "bridge/qscriptglobalobject_p.h" #include "bridge/qscriptactivationobject_p.h" +#include "bridge/qscriptstaticscopeobject_p.h" #ifndef QT_NO_QOBJECT #include <QtCore/qcoreapplication.h> @@ -905,6 +906,7 @@ QScriptEnginePrivate::QScriptEnginePrivate() JSC::ExecState* exec = globalObject->globalExec(); scriptObjectStructure = QScriptObject::createStructure(globalObject->objectPrototype()); + staticScopeObjectStructure = QScriptStaticScopeObject::createStructure(JSC::jsNull()); qobjectPrototype = new (exec) QScript::QObjectPrototype(exec, QScript::QObjectPrototype::createStructure(globalObject->objectPrototype()), globalObject->prototypeFunctionStructure()); qobjectWrapperObjectStructure = QScriptObject::createStructure(qobjectPrototype); @@ -1770,15 +1772,7 @@ void QScriptEnginePrivate::setProperty(JSC::ExecState *exec, JSC::JSValue object } else if (flags != QScriptValue::KeepExistingFlags) { if (thisObject->hasOwnProperty(exec, id)) thisObject->deleteProperty(exec, id); // ### hmmm - can't we just update the attributes? - unsigned attribs = 0; - if (flags & QScriptValue::ReadOnly) - attribs |= JSC::ReadOnly; - if (flags & QScriptValue::SkipInEnumeration) - attribs |= JSC::DontEnum; - if (flags & QScriptValue::Undeletable) - attribs |= JSC::DontDelete; - attribs |= flags & QScriptValue::UserRange; - thisObject->putWithAttributes(exec, id, value, attribs); + thisObject->putWithAttributes(exec, id, value, propertyFlagsToJSCAttributes(flags)); } else { JSC::PutPropertySlot slot; thisObject->put(exec, id, value, slot); diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h index 56366e2..1b35704 100644 --- a/src/script/api/qscriptengine_p.h +++ b/src/script/api/qscriptengine_p.h @@ -205,6 +205,7 @@ public: inline QScriptValue scriptValueFromJSCValue(JSC::JSValue value); inline JSC::JSValue scriptValueToJSCValue(const QScriptValue &value); + static inline unsigned propertyFlagsToJSCAttributes(const QScriptValue::PropertyFlags &flags); static inline JSC::JSValue jscValueFromVariant(JSC::ExecState*, const QVariant &value); static QVariant jscValueToVariant(JSC::ExecState*, JSC::JSValue value, int targetType); @@ -346,6 +347,7 @@ public: JSC::ExecState *currentFrame; WTF::RefPtr<JSC::Structure> scriptObjectStructure; + WTF::RefPtr<JSC::Structure> staticScopeObjectStructure; QScript::QObjectPrototype *qobjectPrototype; WTF::RefPtr<JSC::Structure> qobjectWrapperObjectStructure; @@ -639,6 +641,19 @@ inline JSC::JSValue QScriptEnginePrivate::scriptValueToJSCValue(const QScriptVal return vv->jscValue; } +inline unsigned QScriptEnginePrivate::propertyFlagsToJSCAttributes(const QScriptValue::PropertyFlags &flags) +{ + unsigned attribs = 0; + if (flags & QScriptValue::ReadOnly) + attribs |= JSC::ReadOnly; + if (flags & QScriptValue::SkipInEnumeration) + attribs |= JSC::DontEnum; + if (flags & QScriptValue::Undeletable) + attribs |= JSC::DontDelete; + attribs |= flags & QScriptValue::UserRange; + return attribs; +} + inline QScriptValuePrivate::~QScriptValuePrivate() { if (engine) diff --git a/src/script/bridge/bridge.pri b/src/script/bridge/bridge.pri index 09e2dfb..ab0a322 100644 --- a/src/script/bridge/bridge.pri +++ b/src/script/bridge/bridge.pri @@ -6,6 +6,7 @@ SOURCES += \ $$PWD/qscriptqobject.cpp \ $$PWD/qscriptglobalobject.cpp \ $$PWD/qscriptactivationobject.cpp \ + $$PWD/qscriptstaticscopeobject.cpp \ $$PWD/qscriptdeclarativeobject.cpp \ $$PWD/qscriptdeclarativeclass.cpp @@ -17,5 +18,6 @@ HEADERS += \ $$PWD/qscriptqobject_p.h \ $$PWD/qscriptglobalobject_p.h \ $$PWD/qscriptactivationobject_p.h \ + $$PWD/qscriptstaticscopeobject_p.h \ $$PWD/qscriptdeclarativeobject_p.h \ $$PWD/qscriptdeclarativeclass_p.h diff --git a/src/script/bridge/qscriptdeclarativeclass.cpp b/src/script/bridge/qscriptdeclarativeclass.cpp index 1093448..8080b9f 100644 --- a/src/script/bridge/qscriptdeclarativeclass.cpp +++ b/src/script/bridge/qscriptdeclarativeclass.cpp @@ -24,6 +24,7 @@ #include "qscriptdeclarativeclass_p.h" #include "qscriptdeclarativeobject_p.h" #include "qscriptobject_p.h" +#include "qscriptstaticscopeobject_p.h" #include <QtScript/qscriptstring.h> #include <QtScript/qscriptengine.h> #include <QtScript/qscriptengineagent.h> @@ -549,4 +550,39 @@ QScriptContext *QScriptDeclarativeClass::context() const return d_ptr->context; } +/*! + Creates a scope object with a fixed set of undeletable properties. +*/ +QScriptValue QScriptDeclarativeClass::newStaticScopeObject( + QScriptEngine *engine, int propertyCount, const QString *names, + const QScriptValue *values, const QScriptValue::PropertyFlags *flags) +{ + QScriptEnginePrivate *eng_p = QScriptEnginePrivate::get(engine); + QScript::APIShim shim(eng_p); + JSC::ExecState *exec = eng_p->currentFrame; + QScriptStaticScopeObject::PropertyInfo *props = new QScriptStaticScopeObject::PropertyInfo[propertyCount]; + for (int i = 0; i < propertyCount; ++i) { + unsigned attribs = QScriptEnginePrivate::propertyFlagsToJSCAttributes(flags[i]); + Q_ASSERT_X(attribs & JSC::DontDelete, Q_FUNC_INFO, "All properties must be undeletable"); + JSC::Identifier id = JSC::Identifier(exec, names[i]); + JSC::JSValue jsval = eng_p->scriptValueToJSCValue(values[i]); + props[i] = QScriptStaticScopeObject::PropertyInfo(id, jsval, attribs); + } + QScriptValue result = eng_p->scriptValueFromJSCValue(new (exec)QScriptStaticScopeObject(eng_p->staticScopeObjectStructure, + propertyCount, props)); + delete[] props; + return result; +} + +/*! + Creates a static scope object that's initially empty, but to which new + properties can be added. +*/ +QScriptValue QScriptDeclarativeClass::newStaticScopeObject(QScriptEngine *engine) +{ + QScriptEnginePrivate *eng_p = QScriptEnginePrivate::get(engine); + QScript::APIShim shim(eng_p); + return eng_p->scriptValueFromJSCValue(new (eng_p->currentFrame)QScriptStaticScopeObject(eng_p->staticScopeObjectStructure)); +} + QT_END_NAMESPACE diff --git a/src/script/bridge/qscriptdeclarativeclass_p.h b/src/script/bridge/qscriptdeclarativeclass_p.h index 714a67c..420b133 100644 --- a/src/script/bridge/qscriptdeclarativeclass_p.h +++ b/src/script/bridge/qscriptdeclarativeclass_p.h @@ -92,6 +92,11 @@ public: static QScriptValue scopeChainValue(QScriptContext *, int index); static QScriptContext *pushCleanContext(QScriptEngine *); + static QScriptValue newStaticScopeObject( + QScriptEngine *, int propertyCount, const QString *names, + const QScriptValue *values, const QScriptValue::PropertyFlags *flags); + static QScriptValue newStaticScopeObject(QScriptEngine *); + class Q_SCRIPT_EXPORT PersistentIdentifier { public: diff --git a/src/script/bridge/qscriptstaticscopeobject.cpp b/src/script/bridge/qscriptstaticscopeobject.cpp new file mode 100644 index 0000000..44548a4 --- /dev/null +++ b/src/script/bridge/qscriptstaticscopeobject.cpp @@ -0,0 +1,157 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL-ONLY$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "config.h" +#include "qscriptstaticscopeobject_p.h" + +namespace JSC +{ + ASSERT_CLASS_FITS_IN_CELL(QT_PREPEND_NAMESPACE(QScriptStaticScopeObject)); +} + +QT_BEGIN_NAMESPACE + +/*! + \class QScriptStaticScopeObject + \internal + + Represents a static scope object. + + This class allows the VM to determine at JS script compile time whether + the object has a given property or not. If the object has the property, + a fast, index-based read/write operation will be used. If the object + doesn't have the property, the compiler knows it can safely skip this + object when dynamically resolving the property. Either way, this can + greatly improve performance. + + \sa QScriptContext::pushScope() +*/ + +const JSC::ClassInfo QScriptStaticScopeObject::info = { "QScriptStaticScopeObject", 0, 0, 0 }; + +/*! + Creates a static scope object with a fixed set of undeletable properties. + + It's not possible to add new properties to the object after construction. +*/ +QScriptStaticScopeObject::QScriptStaticScopeObject(WTF::NonNullPassRefPtr<JSC::Structure> structure, + int propertyCount, const PropertyInfo* props) + : JSC::JSVariableObject(structure, new Data(/*canGrow=*/false)) +{ + int index = growRegisterArray(propertyCount); + for (int i = 0; i < propertyCount; ++i, --index) { + const PropertyInfo& prop = props[i]; + JSC::SymbolTableEntry entry(index, prop.attributes); + symbolTable().add(prop.identifier.ustring().rep(), entry); + registerAt(index) = prop.value; + } +} + +/*! + Creates an empty static scope object. + + Properties can be added to the object after construction, either by + calling QScriptValue::setProperty(), or by pushing the object on the + scope chain; variable declarations ("var" statements) and function + declarations in JavaScript will create properties on the scope object. + + Note that once the scope object has been used in a closure and the + resulting function has been compiled, it's no longer safe to add + properties to the scope object (because the VM will bypass this + object the next time the function is executed). +*/ +QScriptStaticScopeObject::QScriptStaticScopeObject(WTF::NonNullPassRefPtr<JSC::Structure> structure) + : JSC::JSVariableObject(structure, new Data(/*canGrow=*/true)) +{ +} + +QScriptStaticScopeObject::~QScriptStaticScopeObject() +{ + delete d; +} + +bool QScriptStaticScopeObject::getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertySlot& slot) +{ + return symbolTableGet(propertyName, slot); +} + +bool QScriptStaticScopeObject::getOwnPropertyDescriptor(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertyDescriptor& descriptor) +{ + return symbolTableGet(propertyName, descriptor); +} + +void QScriptStaticScopeObject::putWithAttributes(JSC::ExecState* exec, const JSC::Identifier &propertyName, JSC::JSValue value, unsigned attributes) +{ + if (symbolTablePutWithAttributes(propertyName, value, attributes)) + return; + Q_ASSERT(d_ptr()->canGrow); + addSymbolTableProperty(propertyName, value, attributes); +} + +void QScriptStaticScopeObject::put(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSValue value, JSC::PutPropertySlot&) +{ + if (symbolTablePut(propertyName, value)) + return; + Q_ASSERT(d_ptr()->canGrow); + addSymbolTableProperty(propertyName, value, /*attributes=*/0); +} + +bool QScriptStaticScopeObject::deleteProperty(JSC::ExecState*, const JSC::Identifier&) +{ + return false; +} + +void QScriptStaticScopeObject::markChildren(JSC::MarkStack& markStack) +{ + JSC::Register* registerArray = d_ptr()->registerArray.get(); + if (!registerArray) + return; + markStack.appendValues(reinterpret_cast<JSC::JSValue*>(registerArray), d_ptr()->registerArraySize); +} + +void QScriptStaticScopeObject::addSymbolTableProperty(const JSC::Identifier& name, JSC::JSValue value, unsigned attributes) +{ + int index = growRegisterArray(1); + JSC::SymbolTableEntry newEntry(index, attributes | JSC::DontDelete); + symbolTable().add(name.ustring().rep(), newEntry); + registerAt(index) = value; +} + +/*! + Grows the register array by \a count elements, and returns the offset of + the newly added elements (note that the register file grows downwards, + starting at index -1). +*/ +int QScriptStaticScopeObject::growRegisterArray(int count) +{ + size_t oldSize = d_ptr()->registerArraySize; + size_t newSize = oldSize + count; + JSC::Register* registerArray = new JSC::Register[newSize]; + if (d_ptr()->registerArray) + memcpy(registerArray + count, d_ptr()->registerArray.get(), oldSize * sizeof(JSC::Register)); + setRegisters(registerArray + newSize, registerArray); + d_ptr()->registerArraySize = newSize; + return -oldSize - 1; +} + +QT_END_NAMESPACE diff --git a/src/script/bridge/qscriptstaticscopeobject_p.h b/src/script/bridge/qscriptstaticscopeobject_p.h new file mode 100644 index 0000000..0a0e7ef --- /dev/null +++ b/src/script/bridge/qscriptstaticscopeobject_p.h @@ -0,0 +1,103 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL-ONLY$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSCRIPTSTATICSCOPEOBJECT_P_H +#define QSCRIPTSTATICSCOPEOBJECT_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qobjectdefs.h> + +#include "JSVariableObject.h" + +QT_BEGIN_NAMESPACE + +class QScriptStaticScopeObject : public JSC::JSVariableObject { +public: + struct PropertyInfo { + PropertyInfo(const JSC::Identifier& i, JSC::JSValue v, unsigned a) + : identifier(i), value(v), attributes(a) + { } + PropertyInfo() {} + + JSC::Identifier identifier; + JSC::JSValue value; + unsigned attributes; + }; + + QScriptStaticScopeObject(WTF::NonNullPassRefPtr<JSC::Structure> structure, + int propertyCount, const PropertyInfo*); + QScriptStaticScopeObject(WTF::NonNullPassRefPtr<JSC::Structure> structure); + virtual ~QScriptStaticScopeObject(); + + virtual bool isDynamicScope() const { return false; } + + virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertySlot&); + virtual bool getOwnPropertyDescriptor(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertyDescriptor&); + + virtual void putWithAttributes(JSC::ExecState *exec, const JSC::Identifier &propertyName, JSC::JSValue value, unsigned attributes); + virtual void put(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSValue value, JSC::PutPropertySlot&); + + virtual bool deleteProperty(JSC::ExecState*, const JSC::Identifier& propertyName); + + virtual void markChildren(JSC::MarkStack&); + + virtual const JSC::ClassInfo* classInfo() const { return &info; } + static const JSC::ClassInfo info; + + static WTF::PassRefPtr<JSC::Structure> createStructure(JSC::JSValue proto) { + return JSC::Structure::create(proto, JSC::TypeInfo(JSC::ObjectType, StructureFlags)); + } + +protected: + static const unsigned StructureFlags = JSC::OverridesGetOwnPropertySlot | JSC::NeedsThisConversion | JSC::OverridesMarkChildren | JSC::OverridesGetPropertyNames | JSC::JSVariableObject::StructureFlags; + + struct Data : public JSVariableObjectData { + Data(bool canGrow_) + : JSVariableObjectData(&symbolTable, /*registers=*/0), + canGrow(canGrow_), registerArraySize(0) + { } + bool canGrow; + int registerArraySize; + JSC::SymbolTable symbolTable; + }; + + Data* d_ptr() const { return static_cast<Data*>(JSVariableObject::d); } + +private: + void addSymbolTableProperty(const JSC::Identifier&, JSC::JSValue, unsigned attributes); + int growRegisterArray(int); +}; + +QT_END_NAMESPACE + +#endif diff --git a/tests/auto/qscriptengine/tst_qscriptengine.cpp b/tests/auto/qscriptengine/tst_qscriptengine.cpp index 5e59950..6885adf 100644 --- a/tests/auto/qscriptengine/tst_qscriptengine.cpp +++ b/tests/auto/qscriptengine/tst_qscriptengine.cpp @@ -51,6 +51,8 @@ #include <QtCore/qnumeric.h> #include <stdlib.h> +#include <QtScript/private/qscriptdeclarativeclass_p.h> + Q_DECLARE_METATYPE(QList<int>) Q_DECLARE_METATYPE(QObjectList) Q_DECLARE_METATYPE(QScriptProgram) @@ -169,6 +171,8 @@ private slots: void qRegExpInport_data(); void qRegExpInport(); void reentrency(); + void newFixedStaticScopeObject(); + void newGrowingStaticScopeObject(); }; tst_QScriptEngine::tst_QScriptEngine() @@ -4955,5 +4959,243 @@ void tst_QScriptEngine::reentrency() QCOMPARE(eng.evaluate("foo() + hello").toInt32(), 5+6+9); } +void tst_QScriptEngine::newFixedStaticScopeObject() +{ + QScriptEngine eng; + static const int propertyCount = 4; + QString names[] = { "foo", "bar", "baz", "Math" }; + QScriptValue values[] = { 123, "ciao", true, false }; + QScriptValue::PropertyFlags flags[] = { QScriptValue::Undeletable, + QScriptValue::ReadOnly | QScriptValue::Undeletable, + QScriptValue::SkipInEnumeration | QScriptValue::Undeletable, + QScriptValue::Undeletable }; + QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(&eng, propertyCount, names, values, flags); + + // Query property. + for (int i = 0; i < propertyCount; ++i) { + for (int x = 0; x < 2; ++x) { + if (x) { + // Properties can't be deleted. + scope.setProperty(names[i], QScriptValue()); + } + QVERIFY(scope.property(names[i]).equals(values[i])); + QCOMPARE(scope.propertyFlags(names[i]), flags[i]); + } + } + + // Property that doesn't exist. + QVERIFY(!scope.property("noSuchProperty").isValid()); + QCOMPARE(scope.propertyFlags("noSuchProperty"), QScriptValue::PropertyFlags()); + + // Write to writable property. + { + QScriptValue oldValue = scope.property("foo"); + QVERIFY(oldValue.isNumber()); + QScriptValue newValue = oldValue.toNumber() * 2; + scope.setProperty("foo", newValue); + QVERIFY(scope.property("foo").equals(newValue)); + scope.setProperty("foo", oldValue); + QVERIFY(scope.property("foo").equals(oldValue)); + } + + // Write to read-only property. + scope.setProperty("bar", 456); + QVERIFY(scope.property("bar").equals("ciao")); + + // Iterate. + { + QScriptValueIterator it(scope); + QSet<QString> iteratedNames; + while (it.hasNext()) { + it.next(); + iteratedNames.insert(it.name()); + } + for (int i = 0; i < propertyCount; ++i) + QVERIFY(iteratedNames.contains(names[i])); + } + + // Push it on the scope chain of a new context. + QScriptContext *ctx = eng.pushContext(); + ctx->pushScope(scope); + QCOMPARE(ctx->scopeChain().size(), 3); // Global Object, native activation, custom scope + QVERIFY(ctx->activationObject().equals(scope)); + + // Read property from JS. + for (int i = 0; i < propertyCount; ++i) { + for (int x = 0; x < 2; ++x) { + if (x) { + // Property can't be deleted from JS. + QScriptValue ret = eng.evaluate(QString::fromLatin1("delete %0").arg(names[i])); + QVERIFY(ret.equals(false)); + } + QVERIFY(eng.evaluate(names[i]).equals(values[i])); + } + } + + // Property that doesn't exist. + QVERIFY(eng.evaluate("noSuchProperty").equals("ReferenceError: Can't find variable: noSuchProperty")); + + // Write property from JS. + { + QScriptValue oldValue = eng.evaluate("foo"); + QVERIFY(oldValue.isNumber()); + QScriptValue newValue = oldValue.toNumber() * 2; + QVERIFY(eng.evaluate("foo = foo * 2; foo").equals(newValue)); + scope.setProperty("foo", oldValue); + QVERIFY(eng.evaluate("foo").equals(oldValue)); + } + + // Write to read-only property. + QVERIFY(eng.evaluate("bar = 456; bar").equals("ciao")); + + // Create a closure and return properties from there. + { + QScriptValue props = eng.evaluate("(function() { var baz = 'shadow'; return [foo, bar, baz, Math, Array]; })()"); + QVERIFY(props.isArray()); + // "foo" and "bar" come from scope object. + QVERIFY(props.property(0).equals(scope.property("foo"))); + QVERIFY(props.property(1).equals(scope.property("bar"))); + // "baz" shadows property in scope object. + QVERIFY(props.property(2).equals("shadow")); + // "Math" comes from scope object, and shadows Global Object's "Math". + QVERIFY(props.property(3).equals(scope.property("Math"))); + QVERIFY(!props.property(3).equals(eng.globalObject().property("Math"))); + // "Array" comes from Global Object. + QVERIFY(props.property(4).equals(eng.globalObject().property("Array"))); + } + + // As with normal JS, assigning to an undefined variable will create + // the property on the Global Object, not the inner scope. + QVERIFY(!eng.globalObject().property("newProperty").isValid()); + QVERIFY(eng.evaluate("(function() { newProperty = 789; })()").isUndefined()); + QVERIFY(!scope.property("newProperty").isValid()); + QVERIFY(eng.globalObject().property("newProperty").isNumber()); + + // Nested static scope. + { + static const int propertyCount2 = 2; + QString names2[] = { "foo", "hum" }; + QScriptValue values2[] = { 321, "hello" }; + QScriptValue::PropertyFlags flags2[] = { QScriptValue::Undeletable, + QScriptValue::ReadOnly | QScriptValue::Undeletable }; + QScriptValue scope2 = QScriptDeclarativeClass::newStaticScopeObject(&eng, propertyCount2, names2, values2, flags2); + ctx->pushScope(scope2); + + // "foo" shadows scope.foo. + QVERIFY(eng.evaluate("foo").equals(scope2.property("foo"))); + QVERIFY(!eng.evaluate("foo").equals(scope.property("foo"))); + // "hum" comes from scope2. + QVERIFY(eng.evaluate("hum").equals(scope2.property("hum"))); + // "Array" comes from Global Object. + QVERIFY(eng.evaluate("Array").equals(eng.globalObject().property("Array"))); + + ctx->popScope(); + } + + QScriptValue fun = eng.evaluate("(function() { return foo; })"); + QVERIFY(fun.isFunction()); + eng.popContext(); + // Function's scope chain persists after popContext(). + QVERIFY(fun.call().equals(scope.property("foo"))); +} + +void tst_QScriptEngine::newGrowingStaticScopeObject() +{ + QScriptEngine eng; + QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(&eng); + + // Initially empty. + QVERIFY(!QScriptValueIterator(scope).hasNext()); + QVERIFY(!scope.property("foo").isValid()); + + // Add a static property. + scope.setProperty("foo", 123); + QVERIFY(scope.property("foo").equals(123)); + QCOMPARE(scope.propertyFlags("foo"), QScriptValue::Undeletable); + + // Modify existing property. + scope.setProperty("foo", 456); + QVERIFY(scope.property("foo").equals(456)); + + // Add a read-only property. + scope.setProperty("bar", "ciao", QScriptValue::ReadOnly); + QVERIFY(scope.property("bar").equals("ciao")); + QCOMPARE(scope.propertyFlags("bar"), QScriptValue::ReadOnly | QScriptValue::Undeletable); + + // Attempt to modify read-only property. + scope.setProperty("bar", "hello"); + QVERIFY(scope.property("bar").equals("ciao")); + + // Properties can't be deleted. + scope.setProperty("foo", QScriptValue()); + QVERIFY(scope.property("foo").equals(456)); + scope.setProperty("bar", QScriptValue()); + QVERIFY(scope.property("bar").equals("ciao")); + + // Iterate. + { + QScriptValueIterator it(scope); + QSet<QString> iteratedNames; + while (it.hasNext()) { + it.next(); + iteratedNames.insert(it.name()); + } + QCOMPARE(iteratedNames.size(), 2); + QVERIFY(iteratedNames.contains("foo")); + QVERIFY(iteratedNames.contains("bar")); + } + + // Push it on the scope chain of a new context. + QScriptContext *ctx = eng.pushContext(); + ctx->pushScope(scope); + QCOMPARE(ctx->scopeChain().size(), 3); // Global Object, native activation, custom scope + QVERIFY(ctx->activationObject().equals(scope)); + + // Read property from JS. + QVERIFY(eng.evaluate("foo").equals(scope.property("foo"))); + QVERIFY(eng.evaluate("bar").equals(scope.property("bar"))); + + // Write property from JS. + { + QScriptValue oldValue = eng.evaluate("foo"); + QVERIFY(oldValue.isNumber()); + QScriptValue newValue = oldValue.toNumber() * 2; + QVERIFY(eng.evaluate("foo = foo * 2; foo").equals(newValue)); + scope.setProperty("foo", oldValue); + QVERIFY(eng.evaluate("foo").equals(oldValue)); + } + + // Write to read-only property. + QVERIFY(eng.evaluate("bar = 456; bar").equals("ciao")); + + // Shadow property. + QVERIFY(eng.evaluate("Math").equals(eng.globalObject().property("Math"))); + scope.setProperty("Math", "fake Math"); + QVERIFY(eng.evaluate("Math").equals(scope.property("Math"))); + + // Variable declarations will create properties on the scope. + eng.evaluate("var baz = 456"); + QVERIFY(scope.property("baz").equals(456)); + + // Function declarations will create properties on the scope. + eng.evaluate("function fun() { return baz; }"); + QVERIFY(scope.property("fun").isFunction()); + QVERIFY(scope.property("fun").call().equals(scope.property("baz"))); + + // Demonstrate the limitation of a growable static scope: Once a function that + // uses the scope has been compiled, it won't pick up properties that are added + // to the scope later. + { + QScriptValue fun = eng.evaluate("(function() { return futureProperty; })"); + QVERIFY(fun.isFunction()); + QCOMPARE(fun.call().toString(), QString::fromLatin1("ReferenceError: Can't find variable: futureProperty")); + scope.setProperty("futureProperty", "added after the function was compiled"); + // If scope were dynamic, this would return the new property. + QCOMPARE(fun.call().toString(), QString::fromLatin1("ReferenceError: Can't find variable: futureProperty")); + } + + eng.popContext(); +} + QTEST_MAIN(tst_QScriptEngine) #include "tst_qscriptengine.moc" diff --git a/tests/benchmarks/script/qscriptengine/tst_qscriptengine.cpp b/tests/benchmarks/script/qscriptengine/tst_qscriptengine.cpp index 35e2f28..4610046 100644 --- a/tests/benchmarks/script/qscriptengine/tst_qscriptengine.cpp +++ b/tests/benchmarks/script/qscriptengine/tst_qscriptengine.cpp @@ -42,6 +42,8 @@ #include <qtest.h> #include <QtScript> +#include <QtScript/private/qscriptdeclarativeclass_p.h> + //TESTED_FILES= class tst_QScriptEngine : public QObject @@ -74,6 +76,8 @@ private slots: void nativeCall(); void translation_data(); void translation(); + void readScopeProperty_data(); + void readScopeProperty(); }; tst_QScriptEngine::tst_QScriptEngine() @@ -288,5 +292,53 @@ void tst_QScriptEngine::translation() } } +void tst_QScriptEngine::readScopeProperty_data() +{ + QTest::addColumn<bool>("staticScope"); + QTest::addColumn<bool>("nestedScope"); + QTest::newRow("single dynamic scope") << false << false; + QTest::newRow("single static scope") << true << false; + QTest::newRow("double dynamic scope") << false << true; + QTest::newRow("double static scope") << true << true; +} + +void tst_QScriptEngine::readScopeProperty() +{ + QFETCH(bool, staticScope); + QFETCH(bool, nestedScope); + + QScriptEngine engine; + QScriptContext *ctx = engine.pushContext(); + + QScriptValue scope; + if (staticScope) + scope = QScriptDeclarativeClass::newStaticScopeObject(&engine); + else + scope = engine.newObject(); + scope.setProperty("foo", 123); + ctx->pushScope(scope); + + if (nestedScope) { + QScriptValue scope2; + if (staticScope) + scope2 = QScriptDeclarativeClass::newStaticScopeObject(&engine); + else + scope2 = engine.newObject(); + scope2.setProperty("bar", 456); // ensure a miss in inner scope + ctx->pushScope(scope2); + } + + QScriptValue fun = engine.evaluate("(function() {\n" + " for (var i = 0; i < 10000; ++i) {\n" + " foo; foo; foo; foo; foo; foo; foo; foo;\n" + " }\n" + "})"); + engine.popContext(); + QVERIFY(fun.isFunction()); + QBENCHMARK { + fun.call(); + } +} + QTEST_MAIN(tst_QScriptEngine) #include "tst_qscriptengine.moc" |