ENH: add strings() and words() method to NamedEnum

- for situations where a list of strings/words is more useful than a
  raw array of C-strings

src/OpenFOAM/containers/NamedEnum/NamedEnum.C

@@ -24,7 +24,6 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "NamedEnum.H"
-#include "stringList.H"
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
@@ -85,4 +84,42 @@ void Foam::NamedEnum<Enum, nEnum>::write(const Enum e, Ostream& os) const
 }
 
 
+template<class Enum, int nEnum>
+Foam::stringList Foam::NamedEnum<Enum, nEnum>::strings()
+{
+    stringList lst(nEnum);
+
+    label nElem = 0;
+    for (int enumI = 0; enumI < nEnum; ++enumI)
+    {
+        if (names[enumI] && names[enumI][0])
+        {
+            lst[nElem++] = names[enumI];
+        }
+    }
+
+    lst.setSize(nElem);
+    return lst;
+}
+
+
+template<class Enum, int nEnum>
+Foam::wordList Foam::NamedEnum<Enum, nEnum>::words()
+{
+    wordList lst(nEnum);
+
+    label nElem = 0;
+    for (int enumI = 0; enumI < nEnum; ++enumI)
+    {
+        if (names[enumI] && names[enumI][0])
+        {
+            lst[nElem++] = names[enumI];
+        }
+    }
+
+    lst.setSize(nElem);
+    return lst;
+}
+
+
 // ************************************************************************* //

src/OpenFOAM/containers/NamedEnum/NamedEnum.H

@@ -37,6 +37,8 @@ SourceFiles
 
 #include "HashTable.H"
 #include "StaticAssert.H"
+#include "stringList.H"
+#include "wordList.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -87,6 +89,12 @@ public:
         //- Write the name representation of the enumeration to an Ostream
         void write(const Enum e, Ostream&) const;
 
+        //- The set of names as a list of strings
+        static stringList strings();
+
+        //- The set of names as a list of words
+        static wordList words();
+
 
     // Member Operators