| /* |
| Copyright (C) 2009 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 Library 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public License |
| along with this library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef qscriptengine_p_h |
| #define qscriptengine_p_h |
| |
| #include "qscriptconverter_p.h" |
| #include "qscriptengine.h" |
| #include "qscriptoriginalglobalobject_p.h" |
| #include "qscriptstring_p.h" |
| #include "qscriptsyntaxcheckresult_p.h" |
| #include "qscriptvalue.h" |
| #include <JavaScriptCore/JavaScript.h> |
| #include <JavaScriptCore/JSRetainPtr.h> |
| #include <JSBasePrivate.h> |
| #include <QtCore/qshareddata.h> |
| #include <QtCore/qstring.h> |
| #include <QtCore/qstringlist.h> |
| |
| class QScriptEngine; |
| class QScriptSyntaxCheckResultPrivate; |
| |
| class QScriptEnginePrivate : public QSharedData { |
| public: |
| static QScriptEnginePrivate* get(const QScriptEngine* q) { Q_ASSERT(q); return q->d_ptr.data(); } |
| static QScriptEngine* get(const QScriptEnginePrivate* d) { Q_ASSERT(d); return d->q_ptr; } |
| |
| QScriptEnginePrivate(const QScriptEngine*); |
| ~QScriptEnginePrivate(); |
| |
| enum SetExceptionFlag { |
| IgnoreNullException = 0x01, |
| NotNullException = 0x02, |
| }; |
| |
| QScriptSyntaxCheckResultPrivate* checkSyntax(const QString& program); |
| QScriptValuePrivate* evaluate(const QString& program, const QString& fileName, int lineNumber); |
| QScriptValuePrivate* evaluate(const QScriptProgramPrivate* program); |
| inline JSValueRef evaluate(JSStringRef program, JSStringRef fileName, int lineNumber); |
| |
| inline bool hasUncaughtException() const; |
| QScriptValuePrivate* uncaughtException() const; |
| inline void clearExceptions(); |
| inline void setException(JSValueRef exception, const /* SetExceptionFlags */ unsigned flags = IgnoreNullException); |
| inline int uncaughtExceptionLineNumber() const; |
| inline QStringList uncaughtExceptionBacktrace() const; |
| |
| inline void collectGarbage(); |
| inline void reportAdditionalMemoryCost(int cost); |
| |
| inline JSValueRef makeJSValue(double number) const; |
| inline JSValueRef makeJSValue(int number) const; |
| inline JSValueRef makeJSValue(uint number) const; |
| inline JSValueRef makeJSValue(const QString& string) const; |
| inline JSValueRef makeJSValue(bool number) const; |
| inline JSValueRef makeJSValue(QScriptValue::SpecialValue value) const; |
| |
| QScriptValuePrivate* newFunction(QScriptEngine::FunctionSignature fun, QScriptValuePrivate* prototype, int length); |
| QScriptValuePrivate* newFunction(QScriptEngine::FunctionWithArgSignature fun, void* arg); |
| QScriptValuePrivate* newFunction(JSObjectRef funObject, QScriptValuePrivate* prototype); |
| |
| QScriptValuePrivate* newObject() const; |
| QScriptValuePrivate* newArray(uint length); |
| QScriptValuePrivate* newDate(qsreal value); |
| QScriptValuePrivate* globalObject() const; |
| |
| inline QScriptStringPrivate* toStringHandle(const QString& str) const; |
| |
| inline operator JSGlobalContextRef() const; |
| |
| inline bool isDate(JSValueRef value) const; |
| inline bool isArray(JSValueRef value) const; |
| inline bool isError(JSValueRef value) const; |
| inline bool objectHasOwnProperty(JSObjectRef object, JSStringRef property) const; |
| inline QVector<JSStringRef> objectGetOwnPropertyNames(JSObjectRef object) const; |
| |
| private: |
| QScriptEngine* q_ptr; |
| JSGlobalContextRef m_context; |
| JSValueRef m_exception; |
| |
| QScriptOriginalGlobalObject m_originalGlobalObject; |
| |
| JSClassRef m_nativeFunctionClass; |
| JSClassRef m_nativeFunctionWithArgClass; |
| }; |
| |
| |
| /*! |
| Evaluates given JavaScript program and returns result of the evaluation. |
| \attention this function doesn't take ownership of the parameters. |
| \internal |
| */ |
| JSValueRef QScriptEnginePrivate::evaluate(JSStringRef program, JSStringRef fileName, int lineNumber) |
| { |
| JSValueRef exception; |
| JSValueRef result = JSEvaluateScript(m_context, program, /* Global Object */ 0, fileName, lineNumber, &exception); |
| if (!result) { |
| setException(exception, NotNullException); |
| return exception; // returns an exception |
| } |
| clearExceptions(); |
| return result; |
| } |
| |
| bool QScriptEnginePrivate::hasUncaughtException() const |
| { |
| return m_exception; |
| } |
| |
| void QScriptEnginePrivate::clearExceptions() |
| { |
| if (m_exception) |
| JSValueUnprotect(m_context, m_exception); |
| m_exception = 0; |
| } |
| |
| void QScriptEnginePrivate::setException(JSValueRef exception, const /* SetExceptionFlags */ unsigned flags) |
| { |
| if (!((flags & NotNullException) || exception)) |
| return; |
| Q_ASSERT(exception); |
| |
| if (m_exception) |
| JSValueUnprotect(m_context, m_exception); |
| JSValueProtect(m_context, exception); |
| m_exception = exception; |
| } |
| |
| int QScriptEnginePrivate::uncaughtExceptionLineNumber() const |
| { |
| if (!hasUncaughtException() || !JSValueIsObject(m_context, m_exception)) |
| return -1; |
| |
| JSValueRef exception = 0; |
| JSRetainPtr<JSStringRef> lineNumberPropertyName(Adopt, QScriptConverter::toString("line")); |
| JSValueRef lineNumber = JSObjectGetProperty(m_context, const_cast<JSObjectRef>(m_exception), lineNumberPropertyName.get(), &exception); |
| int result = JSValueToNumber(m_context, lineNumber, &exception); |
| return exception ? -1 : result; |
| } |
| |
| QStringList QScriptEnginePrivate::uncaughtExceptionBacktrace() const |
| { |
| if (!hasUncaughtException() || !JSValueIsObject(m_context, m_exception)) |
| return QStringList(); |
| |
| JSValueRef exception = 0; |
| JSRetainPtr<JSStringRef> fileNamePropertyName(Adopt, QScriptConverter::toString("sourceURL")); |
| JSRetainPtr<JSStringRef> lineNumberPropertyName(Adopt, QScriptConverter::toString("line")); |
| JSValueRef jsFileName = JSObjectGetProperty(m_context, const_cast<JSObjectRef>(m_exception), fileNamePropertyName.get(), &exception); |
| JSValueRef jsLineNumber = JSObjectGetProperty(m_context, const_cast<JSObjectRef>(m_exception), lineNumberPropertyName.get(), &exception); |
| JSRetainPtr<JSStringRef> fileName(Adopt, JSValueToStringCopy(m_context, jsFileName, &exception)); |
| int lineNumber = JSValueToNumber(m_context, jsLineNumber, &exception); |
| return QStringList(QString::fromLatin1("<anonymous>()@%0:%1") |
| .arg(QScriptConverter::toString(fileName.get())) |
| .arg(QScriptConverter::toString(exception ? -1 : lineNumber))); |
| } |
| |
| void QScriptEnginePrivate::collectGarbage() |
| { |
| JSGarbageCollect(m_context); |
| } |
| |
| void QScriptEnginePrivate::reportAdditionalMemoryCost(int cost) |
| { |
| if (cost > 0) |
| JSReportExtraMemoryCost(m_context, cost); |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(double number) const |
| { |
| return JSValueMakeNumber(m_context, number); |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(int number) const |
| { |
| return JSValueMakeNumber(m_context, number); |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(uint number) const |
| { |
| return JSValueMakeNumber(m_context, number); |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(const QString& string) const |
| { |
| JSStringRef tmp = QScriptConverter::toString(string); |
| JSValueRef result = JSValueMakeString(m_context, tmp); |
| JSStringRelease(tmp); |
| return result; |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(bool value) const |
| { |
| return JSValueMakeBoolean(m_context, value); |
| } |
| |
| JSValueRef QScriptEnginePrivate::makeJSValue(QScriptValue::SpecialValue value) const |
| { |
| if (value == QScriptValue::NullValue) |
| return JSValueMakeNull(m_context); |
| return JSValueMakeUndefined(m_context); |
| } |
| |
| QScriptStringPrivate* QScriptEnginePrivate::toStringHandle(const QString& str) const |
| { |
| return new QScriptStringPrivate(str); |
| } |
| |
| QScriptEnginePrivate::operator JSGlobalContextRef() const |
| { |
| Q_ASSERT(this); |
| return m_context; |
| } |
| |
| bool QScriptEnginePrivate::isDate(JSValueRef value) const |
| { |
| return m_originalGlobalObject.isDate(value); |
| } |
| |
| bool QScriptEnginePrivate::isArray(JSValueRef value) const |
| { |
| return m_originalGlobalObject.isArray(value); |
| } |
| |
| bool QScriptEnginePrivate::isError(JSValueRef value) const |
| { |
| return m_originalGlobalObject.isError(value); |
| } |
| |
| inline bool QScriptEnginePrivate::objectHasOwnProperty(JSObjectRef object, JSStringRef property) const |
| { |
| // FIXME We need a JSC C API function for this. |
| return m_originalGlobalObject.objectHasOwnProperty(object, property); |
| } |
| |
| inline QVector<JSStringRef> QScriptEnginePrivate::objectGetOwnPropertyNames(JSObjectRef object) const |
| { |
| // FIXME We can't use C API function JSObjectGetPropertyNames as it returns only enumerable properties. |
| return m_originalGlobalObject.objectGetOwnPropertyNames(object); |
| } |
| |
| #endif |