Improve re-throwing of UNO exceptions

(*) if we are already throwing a Wrapped*Exception, get the
exception using cppu::getCaughtexception.

(*) when catching and then immediately throwing UNO exceptions,
use cppu::getCaughtException to prevent exception slicing

(*) if we are going to catch an exception and then
immediately throw a RuntimeException, rather throw a
WrappedTargetRuntimeException and preserve the original exception information.

Change-Id: Ia7a501a50ae0e6f4d05186333c8517fdcb17d558
Reviewed-on: https://gerrit.libreoffice.org/54692
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

2 files changed, 12 insertions, 6 deletions

diff --git a/scripting/source/provider/ActiveMSPList.cxx b/scripting/source/provider/ActiveMSPList.cxx
index 6b1da6093352..5411b5a474ef 100644
--- a/scripting/source/provider/ActiveMSPList.cxx
+++ b/scripting/source/provider/ActiveMSPList.cxx
@@ -218,10 +218,11 @@ Reference< provider::XScriptProvider >
     }
     catch( const Exception& )
     {
+        css::uno::Any anyEx = cppu::getCaughtException();
         throw lang::WrappedTargetRuntimeException(
             "Failed to create MasterScriptProvider for context '"
             + context + "'.",
-            *this, ::cppu::getCaughtException() );
+            *this, anyEx );
     }
     return msp;
 }
diff --git a/scripting/source/provider/ProviderCache.cxx b/scripting/source/provider/ProviderCache.cxx
index 98103a8984e3..09cfbcb6c988 100644
--- a/scripting/source/provider/ProviderCache.cxx
+++ b/scripting/source/provider/ProviderCache.cxx
@@ -22,6 +22,7 @@
 #include <tools/diagnose_ex.h>
 
 #include <com/sun/star/container/XContentEnumerationAccess.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
 #include "ProviderCache.hxx"
 
 using namespace com::sun::star;
@@ -168,10 +169,11 @@ ProviderCache::populateCache()
     }
     catch ( const Exception &e )
     {
-        OUString temp =
-            "ProviderCache::populateCache: couldn't obtain XSingleComponentFactory for "
-            + serviceName;
-        throw RuntimeException( temp.concat( e.Message ) );
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+                "ProviderCache::populateCache: couldn't obtain XSingleComponentFactory for " + serviceName
+                + " " + e.Message,
+                nullptr, anyEx );
     }
 }
 
@@ -185,7 +187,10 @@ ProviderCache::createProvider( ProviderDetails& details )
     }
     catch ( const Exception& e )
     {
-        throw RuntimeException( "ProviderCache::createProvider() Error creating provider from factory. " + e.Message );
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+                "ProviderCache::createProvider() Error creating provider from factory. " + e.Message,
+                nullptr, anyEx );
     }
 
     return details.provider;