ENH: added timeFunctionObject virtual class in inheritance hierarchy

- simply a functionObject with an additional Time reference, which is
  a combination frequently used by concrete functionObjects

src/functionObjects/utilities/codedFunctionObject/codedFunctionObject.C

@@ -124,13 +124,12 @@ Foam::functionObjects::codedFunctionObject::codeDict() const
 Foam::functionObjects::codedFunctionObject::codedFunctionObject
 (
     const word& name,
-    const Time& time,
+    const Time& runTime,
     const dictionary& dict
 )
 :
-    functionObject(name),
+    timeFunctionObject(name, runTime),
     codedBase(),
-    time_(time),
     dict_(dict)
 {
     read(dict_);
@@ -140,12 +139,6 @@ Foam::functionObjects::codedFunctionObject::codedFunctionObject
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::functionObjects::codedFunctionObject::~codedFunctionObject()
-{}
-
-
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
 Foam::functionObject&

src/functionObjects/utilities/codedFunctionObject/codedFunctionObject.H

@@ -75,7 +75,7 @@ SourceFiles
 #ifndef functionObjects_codedFunctionObject_H
 #define functionObjects_codedFunctionObject_H
 
-#include "functionObject.H"
+#include "timeFunctionObject.H"
 #include "codedBase.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@@ -91,16 +91,13 @@ namespace functionObjects
 
 class codedFunctionObject
 :
-    public functionObject,
+    public functionObjects::timeFunctionObject,
     public codedBase
 {
 protected:
 
     // Protected data
 
-        //- Reference to the time database
-        const Time& time_;
-
         //- Input dictionary
         dictionary dict_;
 
@@ -153,13 +150,13 @@ public:
         codedFunctionObject
         (
             const word& name,
-            const Time& time,
+            const Time& runTime,
             const dictionary& dict
         );
 
 
     //- Destructor
-    virtual ~codedFunctionObject();
+    virtual ~codedFunctionObject() = default;
 
 
     // Member Functions