Checkpoint initial implementation

tungston/core/geology/mineralcatalog.py

@@ -0,0 +1,26 @@
+from tungston.core.geology.mineral import Mineral
+from typing import Iterator
+
+
+# Class ############################################################################################
+
+class MineralCatalog:
+
+    def __init__(self, minerals:tuple[Mineral]=None):
+        self._minerals = {}
+
+        for mineral in (minerals or []):
+            self.add(mineral)
+
+    def add(self, mineral:Mineral) -> "MineralCatalog":
+        if mineral.name in self._minerals:
+            raise Exception(f"Catalog already contains an entry for {mineral.name}")
+
+        self._minerals[mineral.name] = mineral
+
+    def all(self) -> Iterator[Mineral]:
+        for mineral in self._minerals.values():
+            yield mineral
+
+    def get(self, name:str) -> Mineral|None:
+        return self._minerals.get(name, None)