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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QML2CPPCONTEXT_H
#define QML2CPPCONTEXT_H
#include "qmltctyperesolver.h"
#include <private/qqmljsdiagnosticmessage_p.h>
#include <QtQml/private/qqmlirbuilder_p.h>
#include <private/qqmljstyperesolver_p.h>
#include <QtCore/QList>
#include <variant>
#include <functional>
QT_BEGIN_NAMESPACE
struct Qml2CppContext
{
const QmlIR::Document *document = nullptr;
const QmltcTypeResolver *typeResolver = nullptr;
QString documentUrl;
QQmlJSLogger *logger = nullptr;
const QHash<QQmlJSScope::ConstPtr, qsizetype> *typeIndices = nullptr; // TODO: remove this?
void recordError(const QQmlJS::SourceLocation &location, const QString &message) const
{
Q_ASSERT(logger);
logger->log(message, Log_Compiler, location);
}
void recordError(const QV4::CompiledData::Location &location, const QString &message) const
{
recordError(QQmlJS::SourceLocation { 0, 0, location.line, location.column }, message);
}
};
struct Qml2CppObject
{
QmlIR::Object *irObject = nullptr; // raw IR object representation
QQmlJSScope::Ptr type; // Qml/JS type representation for IR object
};
// the corner stone of the compiler: compiler pass function prototype. the main
// idea is that, given "context" as input and object hierarchy as input/output,
// you run an arbitrary function (e.g. to verify that QQmlJSScope::ConstPtr
// types are valid).
using Qml2CppCompilerPass = std::function<void(/* IN */ const Qml2CppContext &,
/* INOUT */ QList<Qml2CppObject> &)>;
class Qml2CppCompilerPassExecutor
{
Qml2CppContext m_context;
QList<Qml2CppObject> &m_objects;
QList<Qml2CppCompilerPass> m_passes;
public:
Qml2CppCompilerPassExecutor(const QmlIR::Document *doc, const QmltcTypeResolver *resolver,
const QString &url, QList<Qml2CppObject> &objects,
const QHash<QQmlJSScope::ConstPtr, qsizetype> &typeIndices)
: m_context { doc, resolver, url, nullptr, &typeIndices }, m_objects { objects }
{
}
// add new pass to the executor. first pass is typically the one that
// populates the Qml2CppObject list
void addPass(Qml2CppCompilerPass pass) { m_passes.append(pass); }
// runs passes in the order of their insertion, populating \a logger on
// errors. right now always stops if new errors are found
void run(QQmlJSLogger *logger)
{
m_context.logger = logger;
for (const auto &pass : m_passes) {
pass(m_context, m_objects);
if (m_context.logger->hasErrors())
return;
}
}
};
QT_END_NAMESPACE
#endif // QML2CPPCONTEXT_H
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