BUG: codedFunctionObject: add timeSet functionality

src/postProcessing/functionObjects/utilities/codedFunctionObject/codedFunctionObject.H

@@ -31,6 +31,39 @@ Description
     This function object provides a general interface to enable dynamic code
     compilation.
 
+    The entries are
+        code        : c++; upon functionObject::write()
+        codeInclude : include files
+        codeOptions : include paths; inserted into EXE_INC in Make/options
+        codeLibs    : link line; inserted into LIB_LIBS in Make/options
+
+        codeExecute : c++;upon functionObject::execute();
+        codeRead    : c++; upon functionObject::read();
+        codeEnd     : c++; upon functionObject::end();
+        codeData    : c++; local member data (null constructed);
+        codeTimeSet : c++; upon functionObject::timeSet();
+        localCode   : c++; local static functions
+
+    Example of function object specification:
+    \verbatim
+    difference
+    {
+        functionObjectLibs ("libutilityFunctionObjects.so");
+
+        type coded;
+        // Name of on-the-fly generated functionObject
+        redirectType writeMagU;
+        code
+        #{
+            // Lookup U
+            const volVectorField& U = mesh().lookupObject<volVectorField>("U");
+            // Write
+            mag(U).write();
+        }
+    }
+    \endverbatim
+
+
 SeeAlso
     Foam::functionObject
     Foam::OutputFilterFunctionObject
@@ -77,6 +110,7 @@ protected:
         string codeRead_;
         string codeExecute_;
         string codeEnd_;
+        string codeTimeSet_;
 
         //- Underlying functionObject
         mutable autoPtr<functionObject> redirectFunctionObjectPtr_;