ENH: Refactored stateFunctionObject

- created new functionObjects::properties class derived from IOdictionary
  - replaces raw state IOdictionary owned by functionObjectList
  - state dictionary access/manipulators moved from stateFunctionObject
- stateFunctionObject now acts as a light wrapper around
  functionObjecties::properties
- updated dependent code

src/OpenFOAM/db/functionObjects/functionObjectProperties/functionObjectPropertiesTemplates.C

@@ -0,0 +1,163 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2021 OpenCFD Ltd.
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "IOdictionary.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+template<class Type>
+Type Foam::functionObjects::properties::getObjectProperty
+(
+    const word& objectName,
+    const word& entryName,
+    const Type& defaultValue
+) const
+{
+    Type result = defaultValue;
+    getObjectProperty(objectName, entryName, result);
+    return result;
+}
+
+
+template<class Type>
+bool Foam::functionObjects::properties::getObjectProperty
+(
+    const word& objectName,
+    const word& entryName,
+    Type& value
+) const
+{
+    if (this->found(objectName))
+    {
+        const dictionary& baseDict = this->subDict(objectName);
+        return baseDict.readIfPresent(entryName, value);
+    }
+
+    return false;
+}
+
+
+template<class Type>
+void Foam::functionObjects::properties::setObjectProperty
+(
+    const word& objectName,
+    const word& entryName,
+    const Type& value
+)
+{
+    if (!this->found(objectName))
+    {
+        this->add(objectName, dictionary());
+    }
+
+    dictionary& baseDict = this->subDict(objectName);
+    baseDict.add(entryName, value, true);
+}
+
+
+template<class Type>
+void Foam::functionObjects::properties::setObjectResult
+(
+    const word& objectName,
+    const word& entryName,
+    const Type& value
+)
+{
+    if (!this->found(resultsName_))
+    {
+        this->add(resultsName_, dictionary());
+    }
+
+    dictionary& resultsDict = this->subDict(resultsName_);
+
+    if (!resultsDict.found(objectName))
+    {
+        resultsDict.add(objectName, dictionary());
+    }
+
+    dictionary& objectDict = resultsDict.subDict(objectName);
+
+    const word& dictTypeName = pTraits<Type>::typeName;
+
+    if (!objectDict.found(dictTypeName))
+    {
+        objectDict.add(dictTypeName, dictionary());
+    }
+
+    dictionary& resultTypeDict = objectDict.subDict(dictTypeName);
+
+    resultTypeDict.add(entryName, value, true);
+}
+
+
+template<class Type>
+Type Foam::functionObjects::properties::getObjectResult
+(
+    const word& objectName,
+    const word& entryName,
+    const Type& defaultValue
+) const
+{
+    Type result = defaultValue;
+    (void)getObjectResult(objectName, entryName, result);
+    return result;
+}
+
+
+template<class Type>
+bool Foam::functionObjects::properties::getObjectResult
+(
+    const word& objectName,
+    const word& entryName,
+    Type& value
+) const
+{
+    if (this->found(resultsName_))
+    {
+        const dictionary& resultsDict = this->subDict(resultsName_);
+
+        if (resultsDict.found(objectName))
+        {
+            const dictionary& objectDict = resultsDict.subDict(objectName);
+
+            const word& dictTypeName = pTraits<Type>::typeName;
+
+            if (objectDict.found(dictTypeName))
+            {
+                const dictionary& resultTypeDict =
+                    objectDict.subDict(dictTypeName);
+
+                return resultTypeDict.readIfPresent<Type>(entryName, value);
+            }
+        }
+    }
+
+    return false;
+}
+
+
+// ************************************************************************* //