qqmljscontextualtypes_p.h

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// Copyright (C) 2023 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
 
#ifndef QQMLJSCONTEXTUALTYPES_P_H
#define QQMLJSCONTEXTUALTYPES_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/qstring.h>
#include <QtCore/qhash.h>
#include <private/qqmljsscope_p.h>
 
QT_BEGIN_NAMESPACE
 
namespace QQmlJS {
 
// note: like QQmlImportInstance::Precedence, except that inline components are 0 and
// "Precedence::Highest" is 1 instead of 0.
enum PrecedenceValues : quint8 {
    InlineComponent = 0,
    Default = 1,
    ImplicitImport = std::numeric_limits<quint8>::max() >> 1
};
 
struct ContextualType : public ImportedScope<QQmlJSScope::ConstPtr>
{
    ContextualType() : m_precedence(std::numeric_limits<quint8>::max()) { }
    ContextualType(const ImportedScope<QQmlJSScope::ConstPtr> &type, quint8 precedence)
        : ImportedScope<QQmlJSScope::ConstPtr>(type), m_precedence(precedence)
    {
    }
    ContextualType(const QQmlJSScope::ConstPtr &type, QTypeRevision revision, quint8 precedence)
        : ImportedScope<QQmlJSScope::ConstPtr>({ type, revision }), m_precedence(precedence)
    {
    }
    quint8 m_precedence;
};
 
/*! \internal
 *  Maps type names to types and the compile context of the types. The context can be
 *  INTERNAL (for c++ and synthetic jsrootgen types) or QML (for qml types).
 */
struct ContextualTypes
{
    enum CompileContext { INTERNAL, QML };
 
    ContextualTypes(
            CompileContext context,
            const QHash<QString, ContextualType> &types,
            const QMultiHash<QQmlJSScope::ConstPtr, QString> &names,
            const QQmlJSScope::ConstPtr &arrayType)
        : m_types(types)
        , m_names(names)
        , m_context(context)
        , m_arrayType(arrayType)
    {}
 
    CompileContext context() const { return m_context; }
    QQmlJSScope::ConstPtr arrayType() const { return m_arrayType; }
 
    bool hasType(const QString &name) const { return m_types.contains(name); }
 
    ContextualType type(const QString &name) const { return m_types[name]; }
    QString name(const QQmlJSScope::ConstPtr &type) const { return m_names[type]; }
 
    void setType(const QString &name, const ContextualType &type);
    void clearType(const QString &name)
    {
        auto &scope = m_types[name].scope;
        auto it = m_names.find(scope);
        while (it != m_names.end() && it.key() == scope)
            it = m_names.erase(it);
        scope = QQmlJSScope::ConstPtr();
    }
 
    bool isNullType(const QString &name) const
    {
        const auto it = m_types.constFind(name);
        return it != m_types.constEnd() && it->scope.isNull();
    }
 
    void addTypes(const ContextualTypes &types)
    {
        Q_ASSERT(types.m_context == m_context);
        for (auto it = types.m_types.cbegin(), end = types.m_types.cend(); it != end; ++it) {
            setType(it.key(), it.value());
        }
    }
 
    const QHash<QString, ContextualType> &types() const { return m_types; }
    const auto &names() const { return m_names; }
 
    void clearTypes()
    {
        m_names.clear();
        m_types.clear();
    }
 
private:
    QHash<QString, ContextualType> m_types;
    QMultiHash<QQmlJSScope::ConstPtr, QString> m_names;
    CompileContext m_context;
 
    // For resolving sequence types
    QQmlJSScope::ConstPtr m_arrayType;
};
}
 
QT_END_NAMESPACE
 
#endif // QQMLJSCONTEXTUALTYPES_P_H