replaced string arguments by reference

examples/heat.cc

@@ -31,7 +31,7 @@ int main(int argc, char** argv)
 
   AdaptInfo adaptInfo("adapt");
 
-  double* invTau = probInstat.getInvTau();
+  auto* invTau = probInstat.getInvTau();
 
   auto opTimeLhs = makeOperator(tag::test_trial{}, std::ref(*invTau));
   prob.addMatrixOperator(opTimeLhs, 0, 0);

src/amdis/AMDiS.cpp

@@ -6,7 +6,7 @@
 
 namespace AMDiS
 {
-  Dune::MPIHelper& init(int& argc, char**& argv, std::string initFileName)
+  Dune::MPIHelper& init(int& argc, char**& argv, std::string const& initFileName)
   {
     // Maybe initialize MPI
     Dune::MPIHelper& mpiHelper = Dune::MPIHelper::instance(argc, argv);
@@ -14,10 +14,8 @@ namespace AMDiS
     Parameters::clearData();
 
     if (initFileName == "") {
-      if (argc > 1)
-        Parameters::init(argv[1]);
-      else
-        error_exit("No init file specified!\n");
+      test_exit(argc > 1, "No init file specified!\n");
+      Parameters::init(argv[1]);
     } else {
       Parameters::init(initFileName);
     }

src/amdis/AMDiS.hpp

@@ -12,7 +12,7 @@
 
 namespace AMDiS
 {
-  Dune::MPIHelper& init(int& argc, char**& argv, std::string initFileName = "");
+  Dune::MPIHelper& init(int& argc, char**& argv, std::string const& initFileName = "");
 
   void finalize();
 

src/amdis/AdaptBase.hpp

@@ -15,12 +15,12 @@ namespace AMDiS
   {
   public:
     /// Constructor
-    AdaptBase(std::string name,
+    AdaptBase(std::string const& name,
               ProblemIterationInterface* problemIteration,
               AdaptInfo& adaptInfo,
               ProblemTimeInterface* problemTime = nullptr,
               AdaptInfo* initialAdaptInfo = nullptr)
-      : name_(std::move(name))
+      : name_(name)
       , problemIteration_(problemIteration)
       , adaptInfo_(adaptInfo)
       , problemTime_(problemTime)
@@ -37,7 +37,7 @@ namespace AMDiS
     virtual int adapt() = 0;
 
     /// Returns \ref name
-    std::string getName() const
+    std::string const& getName() const
     {
       return name_;
     }

src/amdis/AdaptInfo.cpp

@@ -9,7 +9,7 @@
 namespace AMDiS
 {
 
-  AdaptInfo::ScalContent::ScalContent(std::string prefix)
+  AdaptInfo::ScalContent::ScalContent(std::string const& prefix)
   {
     Parameters::get(prefix + "->tolerance", spaceTolerance);
     Parameters::get(prefix + "->time tolerance", timeTolerance);
@@ -25,22 +25,22 @@ namespace AMDiS
   }
 
 
-  AdaptInfo::AdaptInfo(std::string name)
-    : name_(std::move(name))
+  AdaptInfo::AdaptInfo(std::string const& name)
+    : name_(name)
   {
     // init();
-    Parameters::get(name_ + "->start time", startTime);
+    Parameters::get(name + "->start time", startTime);
     time = startTime;
 
-    Parameters::get(name_ + "->timestep", timestep);
-    Parameters::get(name_ + "->end time", endTime);
-    Parameters::get(name_ + "->max iteration", maxSpaceIteration);
-    Parameters::get(name_ + "->max timestep iteration", maxTimestepIteration);
-    Parameters::get(name_ + "->max time iteration", maxTimeIteration);
-    Parameters::get(name_ + "->min timestep", minTimestep);
-    Parameters::get(name_ + "->max timestep", maxTimestep);
-    Parameters::get(name_ + "->number of timesteps", nTimesteps);
-    Parameters::get(name_ + "->time tolerance", globalTimeTolerance);
+    Parameters::get(name + "->timestep", timestep);
+    Parameters::get(name + "->end time", endTime);
+    Parameters::get(name + "->max iteration", maxSpaceIteration);
+    Parameters::get(name + "->max timestep iteration", maxTimestepIteration);
+    Parameters::get(name + "->max time iteration", maxTimeIteration);
+    Parameters::get(name + "->min timestep", minTimestep);
+    Parameters::get(name + "->max timestep", maxTimestep);
+    Parameters::get(name + "->number of timesteps", nTimesteps);
+    Parameters::get(name + "->time tolerance", globalTimeTolerance);
   }
 
 

src/amdis/AdaptInfo.hpp

@@ -37,7 +37,7 @@ namespace AMDiS
     {
     public:
       /// Constructor.
-      explicit ScalContent(std::string prefix);
+      explicit ScalContent(std::string const& prefix);
 
       /// Sum of all error estimates
       double est_sum = 0.0;
@@ -75,7 +75,7 @@ namespace AMDiS
 
   public:
     /// Constructor.
-    explicit AdaptInfo(std::string name);
+    explicit AdaptInfo(std::string const& name);
 
     /// Destructor.
     virtual ~AdaptInfo() = default;
@@ -468,7 +468,7 @@ namespace AMDiS
     }
 
     /// Gets \ref &time
-    double* getTimePtr()
+    double const* getTimePtr() const
     {
       return &time;
     }
@@ -538,7 +538,7 @@ namespace AMDiS
     }
 
     /// Gets \ref &timestep
-    double* getTimestepPtr()
+    double const* getTimestepPtr() const
     {
       return &timestep;
     }

src/amdis/AdaptInstationary.cpp

@@ -10,12 +10,12 @@
 
 namespace AMDiS
 {
-  AdaptInstationary::AdaptInstationary(std::string name,
+  AdaptInstationary::AdaptInstationary(std::string const& name,
                                        ProblemIterationInterface& problemIteration,
                                        AdaptInfo& adaptInfo,
                                        ProblemTimeInterface& problemTime,
                                        AdaptInfo& initialAdaptInfo)
-    : AdaptBase(std::move(name), &problemIteration, adaptInfo, &problemTime, &initialAdaptInfo)
+    : AdaptBase(name, &problemIteration, adaptInfo, &problemTime, &initialAdaptInfo)
   {
     Parameters::get(name_ + "->strategy", strategy_);
     Parameters::get(name_ + "->time delta 1", timeDelta1_);

src/amdis/AdaptInstationary.hpp

@@ -25,7 +25,7 @@ namespace AMDiS
   public:
     /// Creates a AdaptInstationary object with the given name for the time
     /// dependent problem problemInstat.
-    AdaptInstationary(std::string name,
+    AdaptInstationary(std::string const& name,
                       ProblemIterationInterface& problemStat,
                       AdaptInfo& info,
                       ProblemTimeInterface& problemInstat,

src/amdis/AdaptStationary.cpp

@@ -8,10 +8,10 @@
 
 namespace AMDiS {
 
-AdaptStationary::AdaptStationary(std::string name,
+AdaptStationary::AdaptStationary(std::string const& name,
                                  ProblemIterationInterface& problemIteration,
                                  AdaptInfo& adaptInfo)
-  : AdaptBase(std::move(name), &problemIteration, adaptInfo)
+  : AdaptBase(name, &problemIteration, adaptInfo)
 {}
 
 

src/amdis/AdaptStationary.hpp

@@ -30,7 +30,7 @@ namespace AMDiS
   {
   public:
     /// Creates a AdaptStationary object with given name.
-    AdaptStationary(std::string name,
+    AdaptStationary(std::string const& name,
                     ProblemIterationInterface& problemIteration,
                     AdaptInfo& adaptInfo);
 

src/amdis/FileWriter.hpp

@@ -60,7 +60,7 @@ namespace AMDiS
 
   public:
     /// Constructor.
-    FileWriter(std::string baseName,
+    FileWriter(std::string const& baseName,
                Vector const& dofvector)
       : FileWriterInterface(baseName)
       , dofvector_(dofvector)

src/amdis/Initfile.cpp

@@ -20,14 +20,14 @@ namespace AMDiS
 //     }
 //   }
 
-void Initfile::init(std::string in)
+void Initfile::init(std::string const& in)
 {
   singlett().read(in);
   singlett().getInternalParameters();
 }
 
 
-void Initfile::read(std::string fn, bool /*force*/)
+void Initfile::read(std::string const& fn, bool /*force*/)
 {
   InitfileParser::readInitfile(fn, pt_);
 }
@@ -35,20 +35,12 @@ void Initfile::read(std::string fn, bool /*force*/)
 
 void Initfile::getInternalParameters()
 {
-  int val = 0;
-  get("level of information", val);
-  msgInfo = val;
+  get("level of information", msgInfo_);
+  get("parameter information", paramInfo_);
+  get("break on missing tag", breakOnMissingTag_);
 
-  val = 1;
-  get("parameter information", val);
-  paramInfo = val;
-
-  val = 0;
-  get("break on missing tag", val);
-  breakOnMissingTag = val;
-
-  if (msgInfo == 0)
-    paramInfo = 0;
+  if (msgInfo_ == 0)
+    paramInfo_ = 0;
 }
 
 

src/amdis/Initfile.hpp

@@ -13,7 +13,7 @@ namespace AMDiS
   {
   public:
     /// initialize singleton object and global parameters
-    static void init(std::string in);
+    static void init(std::string const& in);
 
     /// \brief Get parameter-values from parameter-tree
     /**
@@ -23,7 +23,7 @@ namespace AMDiS
      * Does not thrown an exception if something goes wrong!
      **/
     template <class T>
-    static Dune::Std::optional<T> get(std::string key)
+    static Dune::Std::optional<T> get(std::string const& key)
     {
       try {
         return pt().get<T>(key);
@@ -42,7 +42,7 @@ namespace AMDiS
      *  \param value: The default value and result.
      **/
     template <class T>
-    static void get(std::string key, T& value)
+    static void get(std::string const& key, T& value)
     {
       value = pt().get(key, value);
     }
@@ -50,7 +50,7 @@ namespace AMDiS
     /// Returns specified info level
     static int getMsgInfo()
     {
-      return singlett().msgInfo;
+      return singlett().msgInfo_;
     }
 
     /// print all data in singleton to std::cout
@@ -75,15 +75,15 @@ namespace AMDiS
     }
 
     /// Fill an parametr-tree from a file with filename fn
-    void read(std::string fn, bool force = false);
-    void write(std::string fn);
+    void read(std::string const& fn, bool force = false);
+    void write(std::string const& fn);
 
     /// read standard values for output and information of parameter-values
     void getInternalParameters();
 
-    int msgInfo = 0;
-    int paramInfo = 1;
-    int breakOnMissingTag = 0;
+    int msgInfo_ = 0;
+    int paramInfo_ = 1;
+    bool breakOnMissingTag_ = false;
 
     /// ParameterTree to read/store parameter values
     Dune::ParameterTree pt_;

src/amdis/InitfileParser.cpp

@@ -6,10 +6,9 @@
 
 namespace AMDiS {
 
-void InitfileParser::readInitfile(std::string fn, Dune::ParameterTree& pt, bool overwrite)
+void InitfileParser::readInitfile(std::string const& fn, Dune::ParameterTree& pt, bool overwrite)
 {
-  test_exit(filesystem::exists(fn),
-            "init-file '{}' cannot be opened for reading", fn);
+  test_exit(filesystem::exists(fn), "Init-file '{}' cannot be opened for reading", fn);
 
   // read file if its not parsed already
   auto ins = includeList().insert(fn);
@@ -37,8 +36,7 @@ void InitfileParser::readInitfile(std::istream& in, Dune::ParameterTree& pt, boo
     {
       // parse line and extract map: tag->value
       std::size_t pos = sw.find(':');
-      if (pos == std::string::npos)
-	      throw std::runtime_error("cannot find the delimiter ':' in line '" + sw + "'");
+      test_exit(pos != std::string::npos, "Cannot find the delimiter ':' in line '{}'", sw);
 
       std::string name = sw.substr(0, pos);
       std::string value = sw.substr(pos + 1, sw.length() - (pos + 1));
@@ -73,11 +71,10 @@ void InitfileParser::readInitfile(std::istream& in, Dune::ParameterTree& pt, boo
           epos = sw.find_first_of(delimiter, pos);
           fn = sw.substr(pos, epos - pos);
 
-          if (sw[epos]!=c)
-            throw std::runtime_error("filename in #include not terminated by " + std::to_string(c));
+          test_exit(sw[epos]==c, "Filename in #include not terminated by {}.", std::to_string(c));
           break;
         default:
-          throw std::runtime_error("no filename given for #include");
+          error_exit("No filename given for #include");
       }
 
       readInitfile(fn, pt, overwrite);
@@ -89,7 +86,7 @@ void InitfileParser::readInitfile(std::istream& in, Dune::ParameterTree& pt, boo
 }
 
 
-std::string InitfileParser::replaceVariable(Dune::ParameterTree const& pt, std::string input)
+std::string InitfileParser::replaceVariable(Dune::ParameterTree const& pt, std::string const& input)
 {
   std::string whitespaces = " \t\r\f";
   std::string allowedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_";
@@ -112,8 +109,8 @@ std::string InitfileParser::replaceVariable(Dune::ParameterTree const& pt, std::
 
     // if varname is found in parameter list then replace variable by value
     // otherwise throw tagNotFound exception
-    if (!pt.hasKey(varName))
-      throw std::runtime_error("required tag '" + varName + "' for variable substitution not found");
+    test_exit(pt.hasKey(varName),
+      "Required tag '{}' for variable substitution not found", varName);
 
     std::string varParam = pt[varName];
 
@@ -127,7 +124,7 @@ std::string InitfileParser::replaceVariable(Dune::ParameterTree const& pt, std::
 }
 
 
-std::string InitfileParser::replaceExpression(Dune::ParameterTree const& pt, std::string input)
+std::string InitfileParser::replaceExpression(Dune::ParameterTree const& pt, std::string const& input)
 {
 #if 0
   std::string whitespaces = " \t\r\f";

src/amdis/InitfileParser.hpp

@@ -30,7 +30,7 @@ namespace AMDiS
     static void readInitfile(std::istream& in, Dune::ParameterTree& pt, bool overwrite);
 
     /// Read initfile from input stream into parameter-tree
-    static void readInitfile(std::string fn, Dune::ParameterTree& pt, bool overwrite = true);
+    static void readInitfile(std::string const& fn, Dune::ParameterTree& pt, bool overwrite = true);
 
   private:
     /// Provide a list of already read files. This is necessary to not double include the same file.
@@ -45,13 +45,13 @@ namespace AMDiS
      * Replaces variables of the form ${variablename} or $variablename in the `input`
      * by a corresponding value already stored in the parameter tree `pt`.
      */
-    static std::string replaceVariable(Dune::ParameterTree const& pt, std::string input);
+    static std::string replaceVariable(Dune::ParameterTree const& pt, std::string const& input);
 
     /// \brief Evaluate an expression. NOTE: currently not implemented
     /**
      * Evaluates expressions of the form $(expression) in the `input`
      **/
-    static std::string replaceExpression(Dune::ParameterTree const& pt, std::string input);
+    static std::string replaceExpression(Dune::ParameterTree const& pt, std::string const& input);
   };
 
 } // end namespace AMDiS

src/amdis/Marker.hpp

@@ -33,7 +33,7 @@ namespace AMDiS {
     Marker() {}
 
     /// Constructor.
-    Marker(std::string name, std::string component, Estimates const& est,
+    Marker(std::string const& name, std::string const& component, Estimates const& est,
            std::shared_ptr<Grid> const& grid)
       : name_(name)
       , component_(component)
@@ -41,10 +41,10 @@ namespace AMDiS {
       , est_(est)
       , maximumMarking_(false)
     {
-      Parameters::get(name_ + "->p", p_);
-      Parameters::get(name_ + "->info", info_);
-      Parameters::get(name_ + "->max refinement level", maxRefineLevel_);
-      Parameters::get(name_ + "->min refinement level", minRefineLevel_);
+      Parameters::get(name + "->p", p_);
+      Parameters::get(name + "->info", info_);
+      Parameters::get(name + "->max refinement level", maxRefineLevel_);
+      Parameters::get(name + "->min refinement level", minRefineLevel_);
     }
 
     /// destructor
@@ -106,13 +106,13 @@ namespace AMDiS {
     }
 
     /// Returns \ref name of the Marker
-    std::string getName() const
+    std::string const& getName() const
     {
       return name_;
     }
 
     /// Creates a scalar marker depending on the strategy set in parameters.
-    static std::shared_ptr<Marker<Traits> > createMarker(std::string name, std::string component, Estimates const& est, std::shared_ptr<Grid> const& grid);
+    static std::unique_ptr<Marker<Traits> > createMarker(std::string const& name, std::string const& component, Estimates const& est, std::shared_ptr<Grid> const& grid);
 
   protected:
     /// Name of the scalar marker.
@@ -186,9 +186,9 @@ namespace AMDiS {
 
   public:
     /// Constructor.
-    GRMarker(std::string name, std::string component, Estimates const& est,
+    GRMarker(std::string const& name, std::string component, Estimates const& est,
              std::shared_ptr<Grid> const& grid)
-      : Marker<Traits>(std::move(name), std::move(component), est, grid)
+      : Marker<Traits>(name, std::move(component), est, grid)
     {}
 
     /// Implementation of Marker::markElement().
@@ -217,12 +217,12 @@ namespace AMDiS {
 
   public:
     /// Constructor.
-    MSMarker(std::string name, std::string component, Estimates const& est,
+    MSMarker(std::string const& name, std::string component, Estimates const& est,
              std::shared_ptr<Grid> const& grid)
-      : Super{std::move(name), std::move(component), est, grid}
+      : Super{name, std::move(component), est, grid}
     {
-      Parameters::get(this->name_ + "->MSGamma", msGamma_);
-      Parameters::get(this->name_ + "->MSGammaC", msGammaC_);
+      Parameters::get(name + "->MSGamma", msGamma_);
+      Parameters::get(name + "->MSGammaC", msGammaC_);
     }
 
     /// Implementation of Marker::initMarking().
@@ -254,12 +254,12 @@ namespace AMDiS {
 
   public:
     /// Constructor.
-    ESMarker(std::string name, std::string component, Estimates const& est,
+    ESMarker(std::string const& name, std::string component, Estimates const& est,
              std::shared_ptr<Grid> const& grid)
-      : Super{std::move(name), std::move(component), est, grid}
+      : Super{name, std::move(component), est, grid}
     {
-      Parameters::get(this->name_ + "->ESTheta", esTheta_);
-      Parameters::get(this->name_ + "->ESThetaC", esThetaC_);
+      Parameters::get(name + "->ESTheta", esTheta_);
+      Parameters::get(name + "->ESThetaC", esThetaC_);
     }
 
     /// Implementation of Marker::initMarking().
@@ -292,13 +292,13 @@ namespace AMDiS {
 
   public:
     /// Constructor.
-    GERSMarker(std::string name, std::string component, Estimates const& est,
+    GERSMarker(std::string const& name, std::string component, Estimates const& est,
                std::shared_ptr<Grid> const& grid)
-      : Super{std::move(name), std::move(component), est, grid}
+      : Super{name, std::move(component), est, grid}
     {
-      Parameters::get(this->name_ + "->GERSThetaStar", gersThetaStar_);
-      Parameters::get(this->name_ + "->GERSNu", gersNu_);
-      Parameters::get(this->name_ + "->GERSThetaC", gersThetaC_);
+      Parameters::get(name + "->GERSThetaStar", gersThetaStar_);
+      Parameters::get(name + "->GERSNu", gersNu_);
+      Parameters::get(name + "->GERSThetaC", gersThetaC_);
     }
 
     /// Implementation of Marker::markGrid().

src/amdis/Marker.inc.hpp

@@ -3,37 +3,37 @@
 namespace AMDiS {
 
 template <class Traits>
-std::shared_ptr<Marker<Traits> > Marker<Traits>::createMarker(std::string name, std::string component, Estimates const& est, std::shared_ptr<Grid> const& grid)
+std::unique_ptr<Marker<Traits> > Marker<Traits>::
+createMarker(std::string const& name, std::string const& component,
+             Estimates const& est, std::shared_ptr<Grid> const& grid)
 {
   int strategy = 0;
   Parameters::get(name + "->strategy", strategy);
 
-  std::shared_ptr<Marker<Traits> > marker;
-
   switch (strategy) {
   case 0:  // no refinement/coarsening
     break;
   case 1:
     msg("Creating global refinement (GR) marker");
-    marker = std::make_shared<GRMarker<Traits> >(name, component, est, grid);
+    return std::make_unique<GRMarker<Traits> >(name, component, est, grid);
     break;
   case 2:
     msg("Creating maximum strategy (MS) marker");
-    marker = std::make_shared<MSMarker<Traits> >(name, component, est, grid);
+    return std::make_unique<MSMarker<Traits> >(name, component, est, grid);
     break;
   case 3:
     msg("Creating equidistribution strategy (ES) marker");
-    marker = std::make_shared<ESMarker<Traits> >(name, component, est, grid);
+    return std::make_unique<ESMarker<Traits> >(name, component, est, grid);
     break;
   case 4:
     msg("Creating guaranteed error reduction strategy (GERS) marker");
-    marker = std::make_shared<GERSMarker<Traits> >(name, component, est, grid);
+    return std::make_unique<GERSMarker<Traits> >(name, component, est, grid);
     break;
   default:
     error_exit("invalid strategy");
   }
 
-  return marker;
+  return {};
 }
 
 

src/amdis/Mesh.hpp

@@ -70,7 +70,7 @@ namespace AMDiS
   template <class Grid>
   struct MeshCreator
   {
-    static std::unique_ptr<Grid> create(std::string meshName)
+    static std::unique_ptr<Grid> create(std::string const& meshName)
     {
       error_exit("Creator not yet implemented for this mesh type.");
       return {};
@@ -83,7 +83,7 @@ namespace AMDiS
   {
     using Grid = Dune::AlbertaGrid<dim, dimworld>;
 
-    static std::unique_ptr<Grid> create(std::string meshName)
+    static std::unique_ptr<Grid> create(std::string const& meshName)
     {
       std::string macro_filename = "";
       Parameters::get(meshName + "->macro file name", macro_filename);
@@ -103,31 +103,30 @@ namespace AMDiS
   {
     using Grid = Dune::UGGrid<dim>;
 
-    static std::unique_ptr<Grid> create(std::string meshName)
+    static std::unique_ptr<Grid> create(std::string const& meshName)
     {
 
       std::string filename = "";
       Parameters::get(meshName + "->macro file name", filename);
 
-      if (!filename.empty()) {
-        filesystem::path fn(filename);
-        auto ext = fn.extension();
+      test_exit(!filename.empty(),
+        "Construction of UGGrid without filename not yet implemented!");
 
+      filesystem::path fn(filename);
+      auto ext = fn.extension();
+
+      if (ext == ".msh") {
+        Dune::GmshReader<Grid> reader;
+        return std::unique_ptr<Grid>{reader.read(filename)};
+      }
 #if HAVE_ALBERTA
-        if (ext == ".1d" || ext == ".2d" || ext == ".3d") {
-          Dune::GridFactory<Grid> factory;
-          Dune::AlbertaReader<Grid> reader;
-          reader.readGrid(filename, factory);
-          return std::unique_ptr<Grid>{factory.createGrid()};
-        }
-#endif
-        if (ext == ".msh") {
-          Dune::GmshReader<Grid> reader;
-          return std::unique_ptr<Grid>{reader.read(filename)};
-        }
-      } else {
-        error_exit("Construction of UGGrid without filename not yet implemented!");
+      else if (ext == ".1d" || ext == ".2d" || ext == ".3d") {
+        Dune::GridFactory<Grid> factory;