Move the import handling code out of qmllint

We want to re-use this logic in other places.

Change-Id: I63cbee86a83265ddd241a4fae9ce8c48f38b5f18
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 105 insertions, 0 deletions

diff --git a/tools/shared/qmljsimporter.h b/tools/shared/qmljsimporter.h
new file mode 100644
index 0000000000..44536acc51
--- /dev/null
+++ b/tools/shared/qmljsimporter.h
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 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 QMLJSIMPORTER_H
+#define QMLJSIMPORTER_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 "scopetree.h"
+#include <QtQml/private/qqmldirparser_p.h>
+
+class QmlJSImporter
+{
+public:
+    struct ImportedTypes
+    {
+        // C++ names used in qmltypes files for non-composite types
+        QHash<QString, ScopeTree::Ptr> cppNames;
+
+        // Names a component intends to export, without prefix
+        QHash<QString, ScopeTree::Ptr> exportedQmlNames;
+
+        // Names the importing component sees, possibly adding a prefix
+        QHash<QString, ScopeTree::Ptr> importedQmlNames;
+    };
+
+    QmlJSImporter(const QString &currentDir, const QStringList &importPaths) :
+        m_currentDir(currentDir), m_importPaths(importPaths) {}
+
+    ImportedTypes importBaseQmlTypes(const QStringList &qmltypesFiles);
+    ImportedTypes importFileOrDirectory(
+            const QString &fileOrDirectory, const QString &prefix = QString());
+    ImportedTypes importModule(
+            const QString &module, const QString &prefix = QString(),
+            QTypeRevision version = QTypeRevision());
+
+    QStringList takeWarnings()
+    {
+        QStringList result = std::move(m_warnings);
+        m_warnings.clear();
+        return result;
+    }
+
+private:
+    struct Import {
+        QHash<QString, ScopeTree::Ptr> objects;
+        QHash<QString, ScopeTree::Ptr> scripts;
+        QList<QQmlDirParser::Import> imports;
+        QList<QQmlDirParser::Import> dependencies;
+    };
+
+    void importHelper(const QString &module, ImportedTypes *types,
+                      const QString &prefix = QString(),
+                      QTypeRevision version = QTypeRevision());
+    void processImport(const Import &import, ImportedTypes *types,
+                       const QString &prefix = QString());
+    void importDependencies(const QmlJSImporter::Import &import,
+                            ImportedTypes *types,
+                            const QString &prefix = QString(),
+                            QTypeRevision version = QTypeRevision());
+    void readQmltypes(const QString &filename, QHash<QString, ScopeTree::Ptr> *objects);
+    Import readQmldir(const QString &dirname);
+    ScopeTree::Ptr localFile2ScopeTree(const QString &filePath);
+
+    QString m_currentDir;
+    QStringList m_importPaths;
+    QHash<QPair<QString, QTypeRevision>, Import> m_seenImports;
+    QHash<QString, ScopeTree::Ptr> m_importedFiles;
+    QStringList m_warnings;
+};
+
+#endif // QMLJSIMPORTER_H