1 files changed, 76 insertions, 0 deletions
diff --git a/src/qmlcompiler/qqmljsannotation_p.h b/src/qmlcompiler/qqmljsannotation_p.h
new file mode 100644
index 0000000000..1a63e14347
--- /dev/null
+++ b/src/qmlcompiler/qqmljsannotation_p.h
@@ -0,0 +1,76 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef QQMLJSANNOTATION_P_H
+#define QQMLJSANNOTATION_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/qglobal.h>
+#include <QtCore/qhash.h>
+
+#include <variant>
+
+QT_BEGIN_NAMESPACE
+
+struct QQQmlJSDeprecation
+{
+    QString reason;
+};
+
+struct QQmlJSAnnotation
+{
+    using Value = std::variant<QString, double>;
+
+    QString name;
+    QHash<QString, Value> bindings;
+
+    bool isDeprecation() const;
+    QQQmlJSDeprecation deprecation() const;
+
+    friend bool operator==(const QQmlJSAnnotation &a, const QQmlJSAnnotation &b) {
+        return a.name == b.name &&
+               a.bindings == b.bindings;
+    }
+
+    friend bool operator!=(const QQmlJSAnnotation &a, const QQmlJSAnnotation &b) {
+        return !(a == b);
+    }
+
+    friend size_t qHash(const QQmlJSAnnotation &annotation, size_t seed = 0)
+    {
+        QtPrivate::QHashCombine combine;
+        seed = combine(seed, annotation.name);
+
+        for (auto it = annotation.bindings.constBegin(); it != annotation.bindings.constEnd(); ++it) {
+            size_t h = combine(seed, it.key());
+            // use + to keep the result independent of the ordering of the keys
+
+            const auto &var = it.value();
+
+            if (var.index() == std::variant_npos)
+                continue;
+
+            if (std::holds_alternative<double>(var))
+                seed += combine(h, std::get<double>(var));
+            else if (std::holds_alternative<QString>(var))
+                seed += combine(h, std::get<QString>(var));
+            else
+                Q_UNREACHABLE();
+        }
+
+        return seed;
+    }
+};
+
+QT_END_NAMESPACE
+
+#endif // QQMLJSANNOTATION_P_H