loplugin:singlevalfields improve unaryoperator

when we see a unaryoperator, unless it's one of a small set, we can
know (mostly) that the field will not be written.
there is still a small risk of false+ with code taking references
via conditional expressions.

Change-Id: I96fa808067576a50e5eaf425338e225b4e0bdd4e
Reviewed-on: https://gerrit.libreoffice.org/53263
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 6 insertions, 43 deletions

diff --git a/tools/source/generic/config.cxx b/tools/source/generic/config.cxx
index b5f392de5556..55ce2bdc03b8 100644
--- a/tools/source/generic/config.cxx
+++ b/tools/source/generic/config.cxx
@@ -658,7 +658,6 @@ Config::Config( const OUString& rFileName )
     mpData          = ImplGetConfigData( maFileName );
     mpActGroup      = nullptr;
     mnDataUpdateId  = 0;
-    mnLockCount     = 1;
 
     SAL_INFO("tools.generic", "Config::Config( " << maFileName << " )");
 }
@@ -684,7 +683,7 @@ void Config::SetGroup(const OString& rGroup)
 void Config::DeleteGroup(const OString& rGroup)
 {
     // Update config data if necessary
-    if ( !mnLockCount || !mpData->mbRead )
+    if ( !mpData->mbRead )
     {
         ImplUpdateConfig();
         mpData->mbRead = true;
@@ -721,12 +720,7 @@ void Config::DeleteGroup(const OString& rGroup)
         delete pGroup;
 
         // Rewrite config data
-        if ( !mnLockCount )
-            ImplWriteConfig( mpData );
-        else
-        {
-            mpData->mbModified = true;
-        }
+        mpData->mbModified = true;
 
         mnDataUpdateId = mpData->mnDataUpdateId;
         mpData->mnDataUpdateId++;
@@ -735,10 +729,6 @@ void Config::DeleteGroup(const OString& rGroup)
 
 OString Config::GetGroupName(sal_uInt16 nGroup) const
 {
-    // Update config data if necessary
-    if ( !mnLockCount )
-        ImplUpdateConfig();
-
     ImplGroupData*  pGroup = mpData->mpFirstGroup;
     sal_uInt16          nGroupCount = 0;
     OString aGroupName;
@@ -759,10 +749,6 @@ OString Config::GetGroupName(sal_uInt16 nGroup) const
 
 sal_uInt16 Config::GetGroupCount() const
 {
-    // Update config data if necessary
-    if ( !mnLockCount )
-        ImplUpdateConfig();
-
     ImplGroupData*  pGroup = mpData->mpFirstGroup;
     sal_uInt16          nGroupCount = 0;
     while ( pGroup )
@@ -776,10 +762,6 @@ sal_uInt16 Config::GetGroupCount() const
 
 bool Config::HasGroup(const OString& rGroup) const
 {
-    // Update config data if necessary
-    if ( !mnLockCount )
-        ImplUpdateConfig();
-
     ImplGroupData*  pGroup = mpData->mpFirstGroup;
     bool            bRet = false;
 
@@ -807,10 +789,6 @@ OString Config::ReadKey(const OString& rKey, const OString& rDefault) const
     SAL_INFO("tools.generic", "Config::ReadKey( " << rKey << " ) from " << GetGroup()
                       << " in " << maFileName);
 
-    // Update config data if necessary
-    if ( !mnLockCount )
-        ImplUpdateConfig();
-
     // Search key, return value if found
     ImplGroupData* pGroup = ImplGetGroup();
     if ( pGroup )
@@ -834,7 +812,7 @@ void Config::WriteKey(const OString& rKey, const OString& rStr)
                        << GetGroup() << " in " << maFileName);
 
     // Update config data if necessary
-    if ( !mnLockCount || !mpData->mbRead )
+    if ( !mpData->mbRead )
     {
         ImplUpdateConfig();
         mpData->mbRead = true;
@@ -875,12 +853,7 @@ void Config::WriteKey(const OString& rKey, const OString& rStr)
         {
             pKey->maValue = rStr;
 
-            if ( !mnLockCount )
-                ImplWriteConfig( mpData );
-            else
-            {
-                mpData->mbModified = true;
-            }
+            mpData->mbModified = true;
         }
     }
 }
@@ -888,7 +861,7 @@ void Config::WriteKey(const OString& rKey, const OString& rStr)
 void Config::DeleteKey(const OString& rKey)
 {
     // Update config data if necessary
-    if ( !mnLockCount || !mpData->mbRead )
+    if ( !mpData->mbRead )
     {
         ImplUpdateConfig();
         mpData->mbRead = true;
@@ -918,13 +891,7 @@ void Config::DeleteKey(const OString& rKey)
                 pGroup->mpFirstKey = pKey->mpNext;
             delete pKey;
 
-            // Rewrite config file
-            if ( !mnLockCount )
-                ImplWriteConfig( mpData );
-            else
-            {
-                mpData->mbModified = true;
-            }
+            mpData->mbModified = true;
         }
     }
 }
@@ -933,10 +900,6 @@ sal_uInt16 Config::GetKeyCount() const
 {
     SAL_INFO("tools.generic", "Config::GetKeyCount() from " << GetGroup() << " in " << maFileName);
 
-    // Update config data if necessary
-    if ( !mnLockCount )
-        ImplUpdateConfig();
-
     // Search key and update value
     sal_uInt16 nCount = 0;
     ImplGroupData* pGroup = ImplGetGroup();