STYLE: make polyMesh constructor explicit

- use polyMesh::defaultRegion instead of fvMesh::defaultRegion and
  others via static inheritance. (92 vs ~25 occurrences)

applications/solvers/compressible/rhoSimpleFoam/overRhoSimpleFoam/createUpdatedDynamicFvMesh.H

@@ -7,7 +7,7 @@
         (
             IOobject
             (
-                dynamicFvMesh::defaultRegion,
+                polyMesh::defaultRegion,
                 runTime.timeName(),
                 runTime,
                 IOobject::MUST_READ

applications/solvers/incompressible/simpleFoam/overSimpleFoam/createUpdatedDynamicFvMesh.H

@@ -7,7 +7,7 @@
         (
             IOobject
             (
-                dynamicFvMesh::defaultRegion,
+                polyMesh::defaultRegion,
                 runTime.timeName(),
                 runTime,
                 IOobject::MUST_READ

applications/test/mesh/Test-mesh.C

@@ -47,7 +47,7 @@ int main(int argc, char *argv[])
     (
         IOobject
         (
-            fvMesh::defaultRegion,
+            polyMesh::defaultRegion,
             runTime.timeName(),
             runTime,
             IOobject::MUST_READ

applications/utilities/mesh/advanced/refinementLevel/refinementLevel.C

@@ -212,7 +212,7 @@ int main(int argc, char *argv[])
     (
         IOobject
         (
-            fvMesh::defaultRegion,
+            polyMesh::defaultRegion,
             runTime.timeName(),
             runTime,
             IOobject::NO_READ,

applications/utilities/mesh/conversion/foamMeshToFluent/fluentFvMesh.H

@@ -56,7 +56,7 @@ public:
     // Constructors
 
         //- Construct from IOobject
-        fluentFvMesh(const IOobject& io);
+        explicit fluentFvMesh(const IOobject& io);
 
 
     // Member functions

applications/utilities/mesh/conversion/foamMeshToFluent/foamMeshToFluent.C

@@ -59,7 +59,7 @@ int main(int argc, char *argv[])
     (
         IOobject
         (
-            fluentFvMesh::defaultRegion,
+            polyMesh::defaultRegion,
             runTime.constant(),
             runTime
         )

applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C

@@ -233,7 +233,7 @@ int main(int argc, char *argv[])
     }
     else
     {
-        regionName = fvMesh::defaultRegion;
+        regionName = polyMesh::defaultRegion;
         Info<< "Create mesh for time = "
             << runTimeExtruded.timeName() << nl << endl;
     }
@@ -787,7 +787,7 @@ int main(int argc, char *argv[])
             (
                 IOobject
                 (
-                    extrudedMesh::defaultRegion,
+                    polyMesh::defaultRegion,
                     runTimeExtruded.constant(),
                     runTimeExtruded
                 ),

applications/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C

@@ -73,7 +73,7 @@ int main(int argc, char *argv[])
     (
         IOobject
         (
-            mirrorFvMesh::defaultRegion,
+            polyMesh::defaultRegion,
             runTime.constant(),
             runTime
         ),

applications/utilities/parallelProcessing/redistributePar/redistributePar.C

@@ -2905,7 +2905,7 @@ int main(int argc, char *argv[])
             const word& regionName = regionNames[regioni];
             const fileName meshSubDir
             (
-                regionName == fvMesh::defaultRegion
+                regionName == polyMesh::defaultRegion
               ? fileName(polyMesh::meshSubDir)
               : regionNames[regioni]/polyMesh::meshSubDir
             );

applications/utilities/preProcessing/changeDictionary/changeDictionary.C

@@ -499,7 +499,7 @@ int main(int argc, char *argv[])
 
 
         fileName regionPrefix;
-        if (regionName != fvMesh::defaultRegion)
+        if (regionName != polyMesh::defaultRegion)
         {
             regionPrefix = regionName;
         }

applications/utilities/preProcessing/createExternalCoupledPatchGeometry/createExternalCoupledPatchGeometry.C

@@ -89,7 +89,7 @@ int main(int argc, char *argv[])
     #include "setRootCase.H"
     #include "createTime.H"
 
-    wordList regionNames(1, fvMesh::defaultRegion);
+    wordList regionNames(1, polyMesh::defaultRegion);
     if (!args.readIfPresent("region", regionNames.first()))
     {
         args.readIfPresent("regions", regionNames);

applications/utilities/preProcessing/mapFields/mapFields.C

@@ -291,7 +291,7 @@ int main(int argc, char *argv[])
     const fileName caseDirSource = casePath.name();
 
     Info<< "Source: " << rootDirSource << " " << caseDirSource << endl;
-    word sourceRegion = fvMesh::defaultRegion;
+    word sourceRegion = polyMesh::defaultRegion;
     if (args.found("sourceRegion"))
     {
         sourceRegion = args["sourceRegion"];
@@ -299,7 +299,7 @@ int main(int argc, char *argv[])
     }
 
     Info<< "Target: " << rootDirTarget << " " << caseDirTarget << endl;
-    word targetRegion = fvMesh::defaultRegion;
+    word targetRegion = polyMesh::defaultRegion;
     if (args.found("targetRegion"))
     {
         targetRegion = args["targetRegion"];

applications/utilities/preProcessing/mapFieldsPar/mapFieldsPar.C

@@ -219,14 +219,14 @@ int main(int argc, char *argv[])
     const fileName caseDirSource = casePath.name();
 
     Info<< "Source: " << rootDirSource << " " << caseDirSource << endl;
-    word sourceRegion = fvMesh::defaultRegion;
+    word sourceRegion = polyMesh::defaultRegion;
     if (args.readIfPresent("sourceRegion", sourceRegion))
     {
         Info<< "Source region: " << sourceRegion << endl;
     }
 
     Info<< "Target: " << rootDirTarget << " " << caseDirTarget << endl;
-    word targetRegion = fvMesh::defaultRegion;
+    word targetRegion = polyMesh::defaultRegion;
     if (args.readIfPresent("targetRegion", targetRegion))
     {
         Info<< "Target region: " << targetRegion << endl;

src/OpenFOAM/include/createMeshNoClear.H

@@ -33,7 +33,7 @@ Foam::fvMesh mesh
 (
     Foam::IOobject
     (
-        Foam::fvMesh::defaultRegion,
+        Foam::polyMesh::defaultRegion,
         runTime.timeName(),
         runTime,
         Foam::IOobject::MUST_READ

src/OpenFOAM/meshes/polyMesh/polyMesh.H

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017, 2020 OpenFOAM Foundation
-    Copyright (C) 2018-2020 OpenCFD Ltd.
+    Copyright (C) 2018-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -325,7 +325,7 @@ public:
     // Constructors
 
         //- Read construct from IOobject
-        polyMesh(const IOobject& io, const bool doInit = true);
+        explicit polyMesh(const IOobject& io, const bool doInit = true);
 
         //- Construct from IOobject or as zero-sized mesh
         //  Boundary is added using addPatches() member function

src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C

@@ -154,7 +154,7 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New
             (
                 IOobject
                 (
-                    dynamicFvMesh::defaultRegion,
+                    polyMesh::defaultRegion,
                     runTime.timeName(),
                     runTime,
                     IOobject::MUST_READ
@@ -168,7 +168,7 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New
             (
                 IOobject
                 (
-                    dynamicFvMesh::defaultRegion,
+                    polyMesh::defaultRegion,
                     runTime.timeName(),
                     runTime,
                     IOobject::MUST_READ

src/dynamicFvMesh/include/createNamedDynamicFvMesh.H

@@ -1,4 +1,4 @@
-    Foam::word regionName = Foam::fvMesh::defaultRegion;
+    Foam::word regionName = Foam::polyMesh::defaultRegion;
 
     if (args.readIfPresent("region", regionName))
     {

src/dynamicMesh/fvMeshDistribute/fvMeshDistribute.C

@@ -1756,7 +1756,7 @@ Foam::autoPtr<Foam::fvMesh> Foam::fvMeshDistribute::receiveMesh
     (
         IOobject
         (
-            fvMesh::defaultRegion,
+            polyMesh::defaultRegion,
             runTime.timeName(),
             runTime,
             IOobject::NO_READ

src/engine/include/createEngineMesh.H

@@ -7,7 +7,7 @@
         (
             IOobject
             (
-                engineMesh::defaultRegion,
+                polyMesh::defaultRegion,
                 runTime.timeName(),
                 runTime,
                 Foam::IOobject::MUST_READ

src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.C

@@ -103,7 +103,7 @@ bool Foam::simplifiedMeshes::columnFvMeshInfo::setPatchEntries
         (
             runTime,
             runTime.timeName(),
-            (regionName_ == fvMesh::defaultRegion ? "" : regionName_)
+            (regionName_ == polyMesh::defaultRegion ? "" : regionName_)
         );
 
         if (objects.empty())
@@ -411,7 +411,7 @@ Foam::simplifiedMeshes::columnFvMeshInfo::columnFvMeshInfo
     regionName_(regionName),
     regionPrefix_
     (
-        regionName_ == fvMesh::defaultRegion
+        regionName_ == polyMesh::defaultRegion
       ? ""
       : regionName_ + '/'
     ),

src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.H

@@ -149,7 +149,7 @@ public:
     columnFvMesh
     (
         const Time& runTime,
-        const word& regionName = fvMesh::defaultRegion
+        const word& regionName = polyMesh::defaultRegion
     );
 };
 

src/functionObjects/field/streamLine/streamLineBase.C

@@ -663,7 +663,7 @@ bool Foam::functionObjects::streamLineBase::writeToFile()
         (
             time_.globalPath()/functionObject::outputPrefix/"sets"/name()
         );
-        if (mesh_.name() != fvMesh::defaultRegion)
+        if (mesh_.name() != polyMesh::defaultRegion)
         {
             vtkPath = vtkPath/mesh_.name();
         }

src/sampling/sampledSet/sampledSets/sampledSets.C

@@ -104,7 +104,7 @@ Foam::sampledSets::sampledSets
         mesh_.time().globalPath()/functionObject::outputPrefix/name
     );
 
-    if (mesh_.name() != fvMesh::defaultRegion)
+    if (mesh_.name() != polyMesh::defaultRegion)
     {
         outputPath_ = outputPath_/mesh_.name();
     }
@@ -137,7 +137,7 @@ Foam::sampledSets::sampledSets
         mesh_.time().globalPath()/functionObject::outputPrefix/name
     );
 
-    if (mesh_.name() != fvMesh::defaultRegion)
+    if (mesh_.name() != polyMesh::defaultRegion)
     {
         outputPath_ = outputPath_/mesh_.name();
     }