[wip] Set meshesPath and particlesPath as list of regexes

Author: franzpoeschel

include/openPMD/CustomHierarchy.hpp

@@ -28,28 +28,44 @@
 #include "openPMD/backend/Writable.hpp"
 
 #include <iostream>
-#include <set>
+#include <regex>
 #include <string>
 #include <type_traits>
+#include <vector>
 
 namespace openPMD
 {
+class Series;
+
 class CustomHierarchy;
 namespace internal
 {
+    enum class ContainedType
+    {
+        Group,
+        Mesh,
+        Particle
+    };
     struct MeshesParticlesPath
     {
-        std::optional<std::string> meshesPath;
-        std::optional<std::string> particlesPath;
-        [[nodiscard]] bool ignore(std::string const &name) const;
-        [[nodiscard]] inline bool hasMeshes() const noexcept
-        {
-            return meshesPath.has_value();
-        }
-        [[nodiscard]] inline bool hasParticles() const noexcept
-        {
-            return particlesPath.has_value();
-        }
+        std::map<std::string, std::regex> meshesPath;
+        std::map<std::string, std::regex> particlesPath;
+
+        explicit MeshesParticlesPath() = default;
+        MeshesParticlesPath(
+            std::vector<std::string> const &meshes,
+            std::vector<std::string> const &particles);
+        MeshesParticlesPath(Series const &);
+
+        [[nodiscard]] ContainedType determineType(
+            std::vector<std::string> const &path,
+            std::string const &name) const;
+        [[nodiscard]] bool isParticle(
+            std::vector<std::string> const &path,
+            std::string const &name) const;
+        [[nodiscard]] bool isMesh(
+            std::vector<std::string> const &path,
+            std::string const &name) const;
     };
 
     struct CustomHierarchyData : ContainerData<CustomHierarchy>
@@ -86,6 +102,11 @@ class CustomHierarchy : public Container<CustomHierarchy>
     void readMeshes(std::string const &meshesPath);
     void readParticles(std::string const &particlesPath);
 
+    void flush_internal(
+        internal::FlushParams const &,
+        internal::MeshesParticlesPath &,
+        std::vector<std::string> currentPath);
+
 protected:
     CustomHierarchy();
     CustomHierarchy(NoInit);
@@ -97,6 +118,9 @@ class CustomHierarchy : public Container<CustomHierarchy>
     }
 
     void read(internal::MeshesParticlesPath const &);
+    void read(
+        internal::MeshesParticlesPath const &,
+        std::vector<std::string> &currentPath);
 
     void flush(std::string const &path, internal::FlushParams const &) override;
 

include/openPMD/Series.hpp

@@ -295,6 +295,7 @@ class Series : public Attributable
      * <CODE>basePath</CODE>.
      */
     std::string meshesPath() const;
+    std::vector<std::string> meshesPaths() const;
     /** Set the path to <A
      * HREF="https://github.com/openPMD/openPMD-standard/blob/latest/STANDARD.md#mesh-based-records">mesh
      * records</A>, relative(!) to <CODE>basePath</CODE>.
@@ -305,13 +306,15 @@ class Series : public Attributable
      * @return  Reference to modified series.
      */
     Series &setMeshesPath(std::string const &meshesPath);
+    Series &setMeshesPath(std::vector<std::string> const &meshesPath);
 
     /**
      * @throw   no_such_attribute_error If optional attribute is not present.
      * @return  String representing the path to particle species, relative(!) to
      * <CODE>basePath</CODE>.
      */
     std::string particlesPath() const;
+    std::vector<std::string> particlesPaths() const;
     /** Set the path to groups for each <A
      * HREF="https://github.com/openPMD/openPMD-standard/blob/latest/STANDARD.md#particle-records">particle
      * species</A>, relative(!) to <CODE>basePath</CODE>.
@@ -322,6 +325,7 @@ class Series : public Attributable
      * @return  Reference to modified series.
      */
     Series &setParticlesPath(std::string const &particlesPath);
+    Series &setParticlesPath(std::vector<std::string> const &particlesPath);
 
     /**
      * @throw   no_such_attribute_error If optional attribute is not present.
@@ -630,8 +634,6 @@ OPENPMD_private
         iterations_iterator end,
         internal::FlushParams flushParams,
         bool flushIOHandler = true);
-    void flushMeshesPath();
-    void flushParticlesPath();
     void readFileBased();
     void readOneIterationFileBased(std::string const &filePath);
     /**

include/openPMD/backend/Attribute.hpp

@@ -229,6 +229,25 @@ namespace detail
                     "getCast: no scalar to vector conversion possible.")};
             }
         }
+        // conversion cast: turn a 1-element vector into a single value
+        else if constexpr (auxiliary::IsVector_v<T>)
+        {
+            if constexpr (std::is_convertible_v<typename T::value_type, U>)
+            {
+                if (pv->size() != 1)
+                {
+                    return {std::runtime_error(
+                        "getCast: vector to scalar conversion requires "
+                        "single-element vectors")};
+                }
+                return {U(*pv->begin())};
+            }
+            else
+            {
+                return {std::runtime_error(
+                    "getCast: no vector to scalar conversion possible.")};
+            }
+        }
         else
         {
             return {std::runtime_error("getCast: no cast possible.")};