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/*
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.
*/
#include "config.h"
#include "qscriptengine_p.h"
#include "qscriptfunction_p.h"
#include "qscriptprogram_p.h"
#include "qscriptvalue_p.h"
/*!
Constructs a default QScriptEnginePrivate object, a new global context will be created.
\internal
*/
QScriptEnginePrivate::QScriptEnginePrivate(const QScriptEngine* engine)
: q_ptr(const_cast<QScriptEngine*>(engine))
, m_context(JSGlobalContextCreate(0))
, m_exception(0)
, m_originalGlobalObject(m_context)
, m_nativeFunctionClass(JSClassCreate(&qt_NativeFunctionClass))
, m_nativeFunctionWithArgClass(JSClassCreate(&qt_NativeFunctionWithArgClass))
{
}
QScriptEnginePrivate::~QScriptEnginePrivate()
{
JSClassRelease(m_nativeFunctionClass);
JSClassRelease(m_nativeFunctionWithArgClass);
if (m_exception)
JSValueUnprotect(m_context, m_exception);
JSGlobalContextRelease(m_context);
}
QScriptSyntaxCheckResultPrivate* QScriptEnginePrivate::checkSyntax(const QString& program)
{
JSValueRef exception;
JSStringRef source = QScriptConverter::toString(program);
bool syntaxIsCorrect = JSCheckScriptSyntax(m_context, source, /* url */ 0, /* starting line */ 1, &exception);
JSStringRelease(source);
if (syntaxIsCorrect) {
return new QScriptSyntaxCheckResultPrivate(this);
}
JSValueProtect(m_context, exception);
return new QScriptSyntaxCheckResultPrivate(this, const_cast<JSObjectRef>(exception));
}
/*!
Evaluates program and returns the result of the evaluation.
\internal
*/
QScriptValuePrivate* QScriptEnginePrivate::evaluate(const QString& program, const QString& fileName, int lineNumber)
{
JSStringRef script = QScriptConverter::toString(program);
JSStringRef file = QScriptConverter::toString(fileName);
QScriptValuePrivate* result = new QScriptValuePrivate(this, evaluate(script, file, lineNumber));
JSStringRelease(script);
JSStringRelease(file);
return result;
}
/*!
Evaluates program and returns the result of the evaluation.
\internal
*/
QScriptValuePrivate* QScriptEnginePrivate::evaluate(const QScriptProgramPrivate* program)
{
if (program->isNull())
return new QScriptValuePrivate;
return new QScriptValuePrivate(this, evaluate(*program, program->file(), program->line()));
}
QScriptValuePrivate* QScriptEnginePrivate::uncaughtException() const
{
return m_exception ? new QScriptValuePrivate(this, m_exception) : new QScriptValuePrivate();
}
QScriptValuePrivate* QScriptEnginePrivate::newFunction(QScriptEngine::FunctionSignature fun, QScriptValuePrivate* prototype, int length)
{
// Note that this private data will be deleted in the object finalize function.
QNativeFunctionData* data = new QNativeFunctionData(this, fun);
JSObjectRef funJS = JSObjectMake(m_context, m_nativeFunctionClass, reinterpret_cast<void*>(data));
QScriptValuePrivate* proto = prototype ? prototype : newObject();
return newFunction(funJS, proto);
}
QScriptValuePrivate* QScriptEnginePrivate::newFunction(QScriptEngine::FunctionWithArgSignature fun, void* arg)
{
// Note that this private data will be deleted in the object finalize function.
QNativeFunctionWithArgData* data = new QNativeFunctionWithArgData(this, fun, arg);
JSObjectRef funJS = JSObjectMake(m_context, m_nativeFunctionWithArgClass, reinterpret_cast<void*>(data));
QScriptValuePrivate* proto = newObject();
return newFunction(funJS, proto);
}
QScriptValuePrivate* QScriptEnginePrivate::newFunction(JSObjectRef funJS, QScriptValuePrivate* prototype)
{
JSObjectSetPrototype(m_context, funJS, m_originalGlobalObject.functionPrototype());
QScriptValuePrivate* result = new QScriptValuePrivate(this, funJS);
static JSStringRef protoName = QScriptConverter::toString("prototype");
static JSStringRef constructorName = QScriptConverter::toString("constructor");
result->setProperty(protoName, prototype, QScriptValue::Undeletable);
prototype->setProperty(constructorName, result, QScriptValue::PropertyFlags(QScriptValue::Undeletable | QScriptValue::SkipInEnumeration));
return result;
}
QScriptValuePrivate* QScriptEnginePrivate::newObject() const
{
return new QScriptValuePrivate(this, JSObjectMake(m_context, /* jsClass */ 0, /* userData */ 0));
}
QScriptValuePrivate* QScriptEnginePrivate::newArray(uint length)
{
JSValueRef exception = 0;
JSObjectRef array = JSObjectMakeArray(m_context, /* argumentCount */ 0, /* arguments */ 0, &exception);
if (!exception) {
if (length > 0) {
JSRetainPtr<JSStringRef> lengthRef(Adopt, JSStringCreateWithUTF8CString("length"));
// array is an Array instance, so an exception should not occure here.
JSObjectSetProperty(m_context, array, lengthRef.get(), JSValueMakeNumber(m_context, length), kJSPropertyAttributeNone, /* exception */ 0);
}
} else {
setException(exception, NotNullException);
return new QScriptValuePrivate();
}
return new QScriptValuePrivate(this, array);
}
QScriptValuePrivate* QScriptEnginePrivate::globalObject() const
{
JSObjectRef globalObject = JSContextGetGlobalObject(m_context);
return new QScriptValuePrivate(this, globalObject);
}
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