collection resolver progress

source/core/CMakeLists.txt

@@ -120,6 +120,8 @@ add_library(matador-core STATIC
   utils/uuid.cpp
   utils/value.cpp
   utils/version.cpp
+  ../../include/matador/object/collection_utils.hpp
+  object/collection_utils.cpp
 )
 
 target_link_libraries(matador-core ${CMAKE_DL_LIBS})

source/core/object/collection_utils.cpp

@@ -0,0 +1,22 @@
+#include "matador/object/collection_utils.hpp"
+
+namespace matador::object {
+bool collection_composite_key::operator==(const collection_composite_key &other) const {
+  return root_type == other.root_type &&
+         type == other.type &&
+         name == other.name;
+}
+
+std::size_t collection_composite_key_hash::operator()(const collection_composite_key &k) const noexcept {
+  const std::size_t h1 = std::hash<std::type_index>{}(k.root_type);
+  const std::size_t h2 = std::hash<std::type_index>{}(k.type);
+  const std::size_t h3 = std::hash<std::string>{}(k.name);
+
+  // Klassische Hash-Kombination (Boost-Style)
+  std::size_t seed = h1;
+  seed ^= h2 + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+  seed ^= h3 + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+
+  return seed;
+}
+}