qqmljsmetatypes.cpp

Go to the documentation of this file.

// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
// Qt-Security score:significant
 
#include "qqmljsmetatypes_p.h"
#include "qqmljstyperesolver_p.h"
 
#include "QtQml/private/qqmltranslation_p.h"
 
QT_BEGIN_NAMESPACE
 
/*!
    \class QQmlJSMetaPropertyBinding
    \inmodule QtQmlCompiler
    \internal
 
    Represents a single QML binding of a specific type. Typically, when you
    create a new binding, you know all the details of it already, so you should
    just set all the data at once.
*/
 
/*!
    A binding is valid when it has both a target (m_propertyName is set)
    and some content set (m_bindingType != Invalid).
*/
bool QQmlJSMetaPropertyBinding::isValid() const
{
    return !m_propertyName.isEmpty() && bindingType() != QQmlSA::BindingType::Invalid;
}
 
bool QQmlJSMetaPropertyBinding::boolValue() const
{
    if (auto boolLit = std::get_if<Content::BoolLiteral>(&m_bindingContent))
        return boolLit->value;
    // warn
    return false;
}
 
double QQmlJSMetaPropertyBinding::numberValue() const
{
    if (auto numberLit = std::get_if<Content::NumberLiteral>(&m_bindingContent))
        return numberLit->value;
    // warn
    return 0;
}
 
QString QQmlJSMetaPropertyBinding::stringValue() const
{
    if (auto stringLiteral = std::get_if<Content::StringLiteral>(&m_bindingContent))
        return stringLiteral->value;
    // warn
    return {};
}
 
QString QQmlJSMetaPropertyBinding::regExpValue() const
{
    if (auto regexpLiteral = std::get_if<Content::RegexpLiteral>(&m_bindingContent))
        return regexpLiteral->value;
    // warn
    return {};
}
 
 /*!
 *  Extracts the information about translations from a binding.
 *  An additional context string is needed for text based translation (e.g. with qsTr())
 *  and can be obtained from the name of the qml file.
 *
 *  \sa QQmlTranslation
 */
QQmlTranslation QQmlJSMetaPropertyBinding::translationDataValue(QString qmlFileNameForContext) const
{
    QQmlTranslation::Data data;
    if (auto translation = std::get_if<Content::TranslationById>(&m_bindingContent)) {
        data = QQmlTranslation::QsTrIdData(translation->id, translation->number);
    } else if (auto translation = std::get_if<Content::TranslationString>(&m_bindingContent)) {
        const QString context = translation->context.isEmpty()
                ? QQmlTranslation::contextFromQmlFilename(qmlFileNameForContext)
                : translation->context;
        data = QQmlTranslation::QsTrData(context, translation->text, translation->comment,
                                         translation->number);
    }
    return QQmlTranslation(data);
}
 
/*!
    Uses \a resolver to return the correct type for the stored literal
    and a null scope pointer if the binding does not contain a literal
 */
QSharedPointer<const QQmlJSScope> QQmlJSMetaPropertyBinding::literalType(const QQmlJSTypeResolver *resolver) const
{
    Q_ASSERT(resolver);
    switch (bindingType()) {
    case BindingType::BoolLiteral:
        return resolver->boolType();
    case BindingType::NumberLiteral:
        return resolver->realType();
    case BindingType::Translation: // translations are strings
    case BindingType::TranslationById:
    case BindingType::StringLiteral:
        return resolver->stringType();
    case BindingType::RegExpLiteral:
        return resolver->regexpType();
    case BindingType::Null:
        return resolver->nullType();
    case BindingType::Invalid:
    case BindingType::Script:
    case BindingType::Object:
    case BindingType::Interceptor:
    case BindingType::ValueSource:
    case BindingType::AttachedProperty:
    case BindingType::GroupProperty:
        return {};
    }
    Q_UNREACHABLE_RETURN({});
}
 
QQmlJSMetaPropertyBinding::QQmlJSMetaPropertyBinding() = default;
 
QT_END_NAMESPACE