Add a facility to version type information for debugging

This serves the same purpose as qtbase/corelib/global/qhooks.cpp,
but is meant to be in sync with changes in Qt Declarative internals.

Change-Id: I5a4a7d9ca5c340367581749e05d09380590c46fb
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/qml/debugger/qqmldebug.cpp b/src/qml/debugger/qqmldebug.cpp
index 35dc110e9a..ea98bb16fa 100644
--- a/src/qml/debugger/qqmldebug.cpp
+++ b/src/qml/debugger/qqmldebug.cpp
@@ -119,4 +119,22 @@ bool QQmlDebuggingEnabler::connectToLocalDebugger(const QString &socketFileName,
     return false;
 }
 
+enum { HookCount = 3 };
+
+// Only add to the end, and bump version if you do.
+quintptr Q_QML_EXPORT qtDeclarativeHookData[] = {
+    // Version of this Array. Bump if you add to end.
+    1,
+
+    // Number of entries in this array.
+    HookCount,
+
+    // TypeInformationVersion, an integral value, bumped whenever private
+    // object sizes or member offsets that are used in Qt Creator's
+    // data structure "pretty printing" change.
+    1
+};
+
+Q_STATIC_ASSERT(HookCount == sizeof(qtDeclarativeHookData) / sizeof(qtDeclarativeHookData[0]));
+
 QT_END_NAMESPACE