ENH: add objectRegistry handling to expressions driver

- needed for future embedding

src/OpenFOAM/expressions/exprDriver/exprDriver.C

@@ -29,7 +29,7 @@ License
 #include "exprDriver.H"
 #include "expressionEntry.H"
 #include "stringOps.H"
-#include "TimeState.H"
+#include "Time.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
@@ -115,34 +115,40 @@ void Foam::expressions::exprDriver::resetTimeReference(const TimeState& ts)
 }
 
 
+void Foam::expressions::exprDriver::resetDb(const objectRegistry* obrPtr)
+{
+    obrPtr_ = obrPtr;
+}
+
+
+void Foam::expressions::exprDriver::resetDb(const objectRegistry& db)
+{
+    resetDb(&db);
+}
+
+
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::expressions::exprDriver::exprDriver
 (
     enum searchControls search,
-    const dictionary& dict,
-    const TimeState* ts
+    const dictionary& dict
 )
 :
     dict_(dict),
     result_(),
     variableStrings_(),
-    variables_(),
+    variables_(16),
     arg1Value_(0),
-    timeStatePtr_(ts),
+    timeStatePtr_(nullptr),
+    obrPtr_(nullptr),
     stashedTokenId_(0),
 
     // Controls
     debugScanner_(dict.getOrDefault("debugScanner", false)),
     debugParser_(dict.getOrDefault("debugParser", false)),
-    allowShadowing_
-    (
-        dict.getOrDefault("allowShadowing", false)
-    ),
-    prevIterIsOldTime_
-    (
-        dict.getOrDefault("prevIterIsOldTime", false)
-    ),
+    allowShadowing_(dict.getOrDefault("allowShadowing", false)),
+    prevIterIsOldTime_(dict.getOrDefault("prevIterIsOldTime", false)),
     searchCtrl_(search)
 {}
 
@@ -158,8 +164,10 @@ Foam::expressions::exprDriver::exprDriver
     variables_(rhs.variables_),
     arg1Value_(rhs.arg1Value_),
     timeStatePtr_(rhs.timeStatePtr_),
+    obrPtr_(rhs.obrPtr_),
     stashedTokenId_(0),
 
+    // Controls
     debugScanner_(rhs.debugScanner_),
     debugParser_(rhs.debugParser_),
     allowShadowing_(rhs.allowShadowing_),
@@ -171,15 +179,13 @@ Foam::expressions::exprDriver::exprDriver
 
 Foam::expressions::exprDriver::exprDriver
 (
-    const dictionary& dict,
-    const TimeState* ts
+    const dictionary& dict
 )
 :
     exprDriver
     (
         searchControls(exprDriver::getSearchControls(dict)),
-        dict,
-        ts
+        dict
     )
 {
     readDict(dict);
@@ -188,10 +194,18 @@ Foam::expressions::exprDriver::exprDriver
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-const Foam::TimeState* Foam::expressions::exprDriver::timeState() const
+const Foam::TimeState* Foam::expressions::exprDriver::timeState() const noexcept
+{
+    if (timeStatePtr_)
     {
         return timeStatePtr_;
     }
+    else if (obrPtr_)
+    {
+        return &(obrPtr_->time());
+    }
+    return nullptr;
+}
 
 
 Foam::scalar Foam::expressions::exprDriver::timeValue() const
@@ -200,6 +214,10 @@ Foam::scalar Foam::expressions::exprDriver::timeValue() const
     {
         return timeStatePtr_->value();
     }
+    else if (obrPtr_)
+    {
+        return obrPtr_->time().value();
+    }
     return 0;
 }
 
@@ -210,6 +228,10 @@ Foam::scalar Foam::expressions::exprDriver::deltaT() const
     {
         return timeStatePtr_->deltaT().value();
     }
+    else if (obrPtr_)
+    {
+        return obrPtr_->time().deltaT().value();
+    }
     return 0;
 }
 

src/OpenFOAM/expressions/exprDriver/exprDriver.H

@@ -130,6 +130,9 @@ protected:
         //- Reference to the time-state
         mutable const TimeState* timeStatePtr_;
 
+        //- Pointer to an object registry (for functions etc).
+        const objectRegistry* obrPtr_;
+
 
     // Controls, tracing etc.
 
@@ -274,19 +277,14 @@ public:
         explicit exprDriver
         (
             enum searchControls search = searchControls::DEFAULT_SEARCH,
-            const dictionary& dict = dictionary::null,
-            const TimeState* ts = nullptr
+            const dictionary& dict = dictionary::null
         );
 
         //- Copy construct
         exprDriver(const exprDriver& rhs);
 
         //- Construct from a dictionary
-        explicit exprDriver
-        (
-            const dictionary& dict,
-            const TimeState* ts = nullptr
-        );
+        explicit exprDriver(const dictionary& dict);
 
 
     //- Destructor
@@ -308,7 +306,7 @@ public:
         }
 
         //- Reference to the current time-state (can be nullptr)
-        const TimeState* timeState() const;
+        const TimeState* timeState() const noexcept;
 
         //- The current time value
         virtual scalar timeValue() const;
@@ -349,6 +347,15 @@ public:
         }
 
 
+    // External References
+
+        //- Reset the objectRegistry (for functions)
+        void resetDb(const objectRegistry* obrPtr = nullptr);
+
+        //- Reset the objectRegistry (for functions)
+        void resetDb(const objectRegistry& db);
+
+
     // Specials
 
         //- Get special-purpose scalar reference argument.

src/OpenFOAM/expressions/exprDriver/exprDriverI.H

@@ -82,7 +82,6 @@ inline void Foam::expressions::exprDriver::addUniformVariable
 }
 
 
-
 template<class Type>
 Foam::tmp<Foam::Field<Type>> Foam::expressions::exprDriver::evaluate
 (

src/OpenFOAM/expressions/exprDriver/exprDriverTemplates.C

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2010-2018
+    Copyright (C) 2010-2018 Bernhard Gschaider
     Copyright (C) 2019-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
@@ -201,9 +201,8 @@ bool Foam::expressions::exprDriver::isLocalVariable
         const exprResult& var = variable(name);
 
         DebugInfo
-            << " - found (" << var.valueType() << ' '
-            << var.isPointData() << ')';
-
+            << " - found (" << var.valueType()
+            << (var.isPointData() ? " point" : "") << ')';
 
         good = (var.isType<Type>() && var.isPointData(wantPointData));
 

src/finiteVolume/expressions/base/fvExprDriver.C

@@ -95,11 +95,10 @@ const Foam::fvMesh* Foam::expressions::fvExprDriver::resetDefaultMesh
 Foam::expressions::fvExprDriver::fvExprDriver
 (
     enum exprDriver::searchControls search,
-    const dictionary& dict,
-    const TimeState* ts
+    const dictionary& dict
 )
 :
-    expressions::exprDriver(search, dict, ts),
+    expressions::exprDriver(search, dict),
     globalScopes_(),
     delayedVariables_(),
     storedVariables_(),
@@ -126,11 +125,10 @@ Foam::expressions::fvExprDriver::fvExprDriver
 
 Foam::expressions::fvExprDriver::fvExprDriver
 (
-    const dictionary& dict,
-    const TimeState* ts
+    const dictionary& dict
 )
 :
-    expressions::exprDriver(dict, ts),
+    expressions::exprDriver(dict),
     globalScopes_(),
     delayedVariables_(),
     storedVariables_(),

src/finiteVolume/expressions/base/fvExprDriver.H

@@ -365,19 +365,14 @@ public:
         (
             enum exprDriver::searchControls search =
                 exprDriver::searchControls::DEFAULT_SEARCH,
-            const dictionary& dict = dictionary::null,
-            const TimeState* ts = nullptr
+            const dictionary& dict = dictionary::null
         );
 
         //- Copy construct
         fvExprDriver(const fvExprDriver&);
 
         //- Construct from a dictionary
-        explicit fvExprDriver
-        (
-            const dictionary& dict,
-            const TimeState* ts = nullptr
-        );
+        explicit fvExprDriver(const dictionary& dict);
 
 
         //- Return a reference to the selected value driver

src/finiteVolume/expressions/patch/patchExprDriver.C

@@ -28,9 +28,8 @@ License
 #include "patchExprDriver.H"
 #include "patchExprScanner.H"
 #include "error.H"
-#include "fvPatch.H"
 #include "fvMesh.H"
-#include "className.H"
+#include "fvPatch.H"
 #include "addToRunTimeSelectionTable.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
@@ -70,14 +69,6 @@ addNamedToRunTimeSelectionTable
 namespace Foam
 {
 
-static inline const TimeState* lookupTimeState
-(
-    const fvPatch& p
-)
-{
-    return &static_cast<const TimeState&>(p.boundaryMesh().mesh().time());
-}
-
 static inline const fvPatch& lookupFvPatch
 (
     const fvMesh& mesh,
@@ -115,9 +106,12 @@ Foam::expressions::patchExpr::parseDriver::parseDriver
 )
 :
     parsing::genericRagelLemonDriver(),
-    expressions::fvExprDriver(dict, lookupTimeState(p)),
+    expressions::fvExprDriver(dict),
     patch_(p)
-{}
+{
+    resetTimeReference(nullptr);
+    resetDb(patch_.boundaryMesh().mesh().thisDb());
+}
 
 
 Foam::expressions::patchExpr::parseDriver::parseDriver
@@ -129,7 +123,10 @@ Foam::expressions::patchExpr::parseDriver::parseDriver
     parsing::genericRagelLemonDriver(),
     expressions::fvExprDriver(rhs),
     patch_(p)
-{}
+{
+    resetTimeReference(nullptr);
+    resetDb(patch_.boundaryMesh().mesh().thisDb());
+}
 
 
 Foam::expressions::patchExpr::parseDriver::parseDriver

src/finiteVolume/expressions/volume/volumeExprDriver.C

@@ -81,22 +81,6 @@ addNamedToRunTimeSelectionTable
 } // End namespace Foam
 
 
-// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
-
-namespace Foam
-{
-
-static inline const TimeState* lookupTimeState
-(
-    const polyMesh& m
-)
-{
-    return &static_cast<const TimeState&>(m.time());
-}
-
-} // End namespace Foam
-
-
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::expressions::volumeExpr::parseDriver::parseDriver
@@ -106,13 +90,16 @@ Foam::expressions::volumeExpr::parseDriver::parseDriver
 )
 :
     parsing::genericRagelLemonDriver(),
-    expressions::fvExprDriver(dict, lookupTimeState(mesh)),
+    expressions::fvExprDriver(dict),
     mesh_(mesh),
     resultType_(),
     isLogical_(false),
     fieldGeoType_(NO_DATA),
     resultDimension_()
-{}
+{
+    resetTimeReference(nullptr);
+    resetDb(mesh_.thisDb());
+}
 
 
 Foam::expressions::volumeExpr::parseDriver::parseDriver
@@ -129,7 +116,8 @@ Foam::expressions::volumeExpr::parseDriver::parseDriver
     fieldGeoType_(NO_DATA),
     resultDimension_()
 {
-    resetTimeReference(mesh_.time());  // Extra safety
+    resetTimeReference(nullptr);
+    resetDb(mesh_.thisDb());
 }
 
 
@@ -152,13 +140,16 @@ Foam::expressions::volumeExpr::parseDriver::parseDriver
 )
 :
     parsing::genericRagelLemonDriver(),
-    expressions::fvExprDriver(dict, lookupTimeState(mesh)),
+    expressions::fvExprDriver(dict),
     mesh_(mesh),
     resultType_(),
     isLogical_(false),
     fieldGeoType_(NO_DATA),
     resultDimension_()
-{}
+{
+    resetTimeReference(nullptr);
+    resetDb(mesh_.thisDb());
+}
 
 
 // * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //