Added draft dataset types

sasdata/dataset_types.py

@@ -0,0 +1,76 @@
+""" Information used for providing guesses about what text based files contain """
+
+from dataclasses import dataclass
+
+#
+#   VERY ROUGH DRAFT - FOR PROTOTYPING PURPOSES
+#
+
+@dataclass
+class DatasetType:
+    name: str
+    required: list[str]
+    optional: list[str]
+    expected_orders: list[list[str]]
+
+
+one_dim = DatasetType(
+            name="1D I vs Q",
+            required=["Q", "I"],
+            optional=["dI", "dQ", "shadow"],
+            expected_orders=[
+                ["Q", "I", "dI"],
+                ["Q", "dQ", "I", "dI"]])
+
+two_dim = DatasetType(
+            name="2D I vs Q",
+            required=["Qx", "Qy", "I"],
+            optional=["dQx", "dQy", "dI", "Qz", "shadow"],
+            expected_orders=[
+                ["Qx", "Qy", "I"],
+                ["Qx", "Qy", "I", "dI"],
+                ["Qx", "Qy", "dQx", "dQy", "I", "dI"]])
+
+sesans = DatasetType(
+    name="SESANS",
+    required=["z", "G"],
+    optional=["stuff", "other stuff", "more stuff"],
+    expected_orders=[["z", "G"]])
+
+dataset_types = {dataset.name for dataset in [one_dim, two_dim, sesans]}
+
+
+#
+# Some default units, this is not how they should be represented, some might not be correct
+#
+# The unit options should only be those compatible with the field
+#
+default_units = {
+    "Q": "1/A",
+    "I": "1/cm",
+    "Qx": "1/A",
+    "Qy": "1/A",
+    "Qz": "1/A",
+    "dI": "1/A",
+    "dQ": "1/A",
+    "dQx": "1/A",
+    "dQy": "1/A",
+    "dQz": "1/A",
+    "z": "A",
+    "G": "<none>",
+    "shaddow": "<none>",
+    "temperature": "K",
+    "magnetic field": "T"
+}
+
+#
+# Other possible fields. Ultimately, these should come out of the metadata structure
+#
+
+metadata_fields = [
+    "temperature",
+    "magnetic field",
+]
+
+
+