Improve error handling when writing type conversion functions

Add an errorMessage parameter to
ShibokenGenerator::buildAbstractMetaTypeFromString()
and output the message in
ShibokenGenerator::replaceConverterTypeSystemVariable().

Change-Id: I249778b3efe89c265590a7d4977cf2a4e76063f9
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/sources/shiboken2/generator/shiboken2/shibokengenerator.h b/sources/shiboken2/generator/shiboken2/shibokengenerator.h
index d44f4aa66..3271d741d 100644
--- a/sources/shiboken2/generator/shiboken2/shibokengenerator.h
+++ b/sources/shiboken2/generator/shiboken2/shibokengenerator.h
@@ -467,7 +467,8 @@ public:
      *   \param typeSignature The string describing the type to be built.
      *   \return A new AbstractMetaType object that must be deleted by the caller, or a NULL pointer in case of failure.
      */
-    AbstractMetaType* buildAbstractMetaTypeFromString(QString typeSignature);
+    AbstractMetaType *buildAbstractMetaTypeFromString(QString typeSignature,
+                                                      QString *errorMessage = nullptr);
 
     /// Creates an AbstractMetaType object from a TypeEntry.
     AbstractMetaType* buildAbstractMetaTypeFromTypeEntry(const TypeEntry* typeEntry);