/*!
Set the location of this expression to \a line of \a url. This information
is used by the script engine.
*/
void QQmlExpression::setSourceLocation(const QString &url, int line, int column)
{
Q_D(QQmlExpression);
d->url = url;
d->line = qmlSourceCoordinate(line);
d->column = qmlSourceCoordinate(column);
}
void QQmlBinding::update(QQmlPropertyPrivate::WriteFlags flags)
{
if (!enabledFlag() || !context() || !context()->isValid())
return;
// Check that the target has not been deleted
if (QQmlData::wasDeleted(object()))
return;
QString url;
quint16 lineNumber;
quint16 columnNumber;
QQmlEnginePrivate *ep = QQmlEnginePrivate::get(context()->engine);
QV4::Scope scope(ep->v4engine());
QV4::ScopedFunctionObject f(scope, v4function.value());
Q_ASSERT(f);
if (f->bindingKeyFlag()) {
Q_ASSERT(f->as<QV4::QQmlBindingFunction>());
QQmlSourceLocation loc = static_cast<QV4::QQmlBindingFunction *>(f.getPointer())->d()->bindingLocation;
url = loc.sourceFile;
lineNumber = loc.line;
columnNumber = loc.column;
} else {
QV4::Function *function = f->asFunctionObject()->function();
Q_ASSERT(function);
url = function->sourceFile();
lineNumber = function->compiledFunction->location.line;
columnNumber = function->compiledFunction->location.column;
}
int lineNo = qmlSourceCoordinate(lineNumber);
int columnNo = qmlSourceCoordinate(columnNumber);
QQmlTrace trace("General Binding Update");
trace.addDetail("URL", url);
trace.addDetail("Line", lineNo);
trace.addDetail("Column", columnNo);
if (!updatingFlag()) {
QQmlBindingProfiler prof(ep->profiler, url, lineNo, columnNo);
setUpdatingFlag(true);
QQmlAbstractExpression::DeleteWatcher watcher(this);
if (m_core.propType == qMetaTypeId<QQmlBinding *>()) {
int idx = m_core.coreIndex;
Q_ASSERT(idx != -1);
QQmlBinding *t = this;
int status = -1;
void *a[] = { &t, 0, &status, &flags };
QMetaObject::metacall(*m_coreObject, QMetaObject::WriteProperty, idx, a);
} else {
ep->referenceScarceResources();
bool isUndefined = false;
QV4::ScopedValue result(scope, QQmlJavaScriptExpression::evaluate(context(), f, &isUndefined));
trace.event("writing binding result");
bool needsErrorLocationData = false;
if (!watcher.wasDeleted() && !hasError())
needsErrorLocationData = !QQmlPropertyPrivate::writeBinding(*m_coreObject, m_core, context(),
this, result, isUndefined, flags);
if (!watcher.wasDeleted()) {
if (needsErrorLocationData)
delayedError()->setErrorLocation(QUrl(url), lineNumber, columnNumber);
if (hasError()) {
if (!delayedError()->addError(ep)) ep->warning(this->error(context()->engine));
} else {
clearError();
}
}
ep->dereferenceScarceResources();
}
if (!watcher.wasDeleted())
setUpdatingFlag(false);
} else {
QQmlProperty p = property();
QQmlAbstractBinding::printBindingLoopError(p);
}
}
/*!
Sets the error \a column number.
*/
void QQmlError::setColumn(int column)
{
if (!d) d = new QQmlErrorPrivate;
d->column = qmlSourceCoordinate(column);
}
/*!
Returns the error column number.
*/
int QQmlError::column() const
{
if (d) return qmlSourceCoordinate(d->column);
else return -1;
}
/*!
Sets the error \a line number.
*/
void QQmlError::setLine(int line)
{
if (!d) d = new QQmlErrorPrivate;
d->line = qmlSourceCoordinate(line);
}
/*!
Returns the error line number.
*/
int QQmlError::line() const
{
if (d) return qmlSourceCoordinate(d->line);
else return -1;
}
void QQmlBinding::update(QQmlPropertyPrivate::WriteFlags flags)
{
if (!enabledFlag() || !context() || !context()->isValid())
return;
// Check that the target has not been deleted
if (QQmlData::wasDeleted(object()))
return;
int lineNo = qmlSourceCoordinate(m_lineNumber);
int columnNo = qmlSourceCoordinate(m_columnNumber);
QQmlTrace trace("General Binding Update");
trace.addDetail("URL", m_url);
trace.addDetail("Line", lineNo);
trace.addDetail("Column", columnNo);
if (!updatingFlag()) {
QQmlBindingProfiler prof(m_url, lineNo, columnNo, QQmlProfilerService::QmlBinding);
setUpdatingFlag(true);
QQmlAbstractExpression::DeleteWatcher watcher(this);
if (m_core.propType == qMetaTypeId<QQmlBinding *>()) {
int idx = m_core.coreIndex;
Q_ASSERT(idx != -1);
QQmlBinding *t = this;
int status = -1;
void *a[] = { &t, 0, &status, &flags };
QMetaObject::metacall(*m_coreObject, QMetaObject::WriteProperty, idx, a);
} else {
QQmlEnginePrivate *ep = QQmlEnginePrivate::get(context()->engine);
ep->referenceScarceResources();
bool isUndefined = false;
v8::HandleScope handle_scope;
v8::Context::Scope scope(ep->v8engine()->context());
v8::Local<v8::Value> result =
QQmlJavaScriptExpression::evaluate(context(), v8function, &isUndefined);
trace.event("writing binding result");
bool needsErrorLocationData = false;
if (!watcher.wasDeleted() && !hasError())
needsErrorLocationData = !QQmlPropertyPrivate::writeBinding(*m_coreObject, m_core, context(),
this, result, isUndefined, flags);
if (!watcher.wasDeleted()) {
if (needsErrorLocationData)
delayedError()->setErrorLocation(QUrl(m_url), m_lineNumber, m_columnNumber);
if (hasError()) {
if (!delayedError()->addError(ep)) ep->warning(this->error(context()->engine));
} else {
clearError();
}
}
ep->dereferenceScarceResources();
}
if (!watcher.wasDeleted())
setUpdatingFlag(false);
} else {
QQmlProperty p = property();
QQmlAbstractBinding::printBindingLoopError(p);
}
}
/*!
Returns the source file column number for this expression. The source location
must have been previously set by calling setSourceLocation().
*/
int QQmlExpression::columnNumber() const
{
Q_D(const QQmlExpression);
return qmlSourceCoordinate(d->column);
}
/*!
Returns the source file line number for this expression. The source location
must have been previously set by calling setSourceLocation().
*/
int QQmlExpression::lineNumber() const
{
Q_D(const QQmlExpression);
return qmlSourceCoordinate(d->line);
}
