make SharedString move operator= inline (tdf#126109)

Calc uses SharedString in mdds::multi_type_vector, which may move
contents of its blocks on some operations, and making this inline
makes such operations faster.

Change-Id: I67d14639cf253c56b8cca5b2837bb06bc9afd7d9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134339
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/svl/sharedstring.hxx b/include/svl/sharedstring.hxx
index 050bd8dd9e55..5b5c35b95a92 100644
--- a/include/svl/sharedstring.hxx
+++ b/include/svl/sharedstring.hxx
@@ -88,6 +88,24 @@ inline SharedString::~SharedString()
         rtl_uString_release(mpDataIgnoreCase);
 }
 
+inline SharedString& SharedString::operator=(SharedString&& r) noexcept
+{
+    // Having this inline helps Calc's mdds::multi_type_vector to do some operations
+    // much faster.
+    if (mpData)
+        rtl_uString_release(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_release(mpDataIgnoreCase);
+
+    mpData = r.mpData;
+    mpDataIgnoreCase = r.mpDataIgnoreCase;
+
+    r.mpData = nullptr;
+    r.mpDataIgnoreCase = nullptr;
+
+    return *this;
+}
+
 inline bool SharedString::operator!= ( const SharedString& r ) const
 {
     return !operator== (r);