feat: precheck (#30)

perform DRC checks on GDS files submitted to Tiny Tapeout

precheck/klayout_tools.py

@@ -0,0 +1,42 @@
+import xml.etree.ElementTree as ET
+from typing import Dict
+
+
+class LayerInfo:
+    def __init__(self, name: str, source: str, layer: int, data_type: int):
+        self.name = name
+        self.source = source
+        self.layer = layer
+        self.data_type = data_type
+
+    def __repr__(self):
+        return f"LayerInfo(name={self.name}, source={self.source}, layer={self.layer}, data_type={self.data_type})"
+
+
+def parse_lyp_layers(lyp_file: str):
+    with open(lyp_file) as f:
+        xml_content = f.read()
+    root = ET.fromstring(xml_content)
+
+    layers_dict: Dict[str, LayerInfo] = {}
+
+    for properties in root.findall("properties"):
+        name = properties.find("name")
+        source = properties.find("source")
+        valid = properties.find("valid")
+
+        if valid is not None and valid.text == "false":
+            continue
+
+        if name is not None and source is not None:
+            name_key = name.text.split("-")[0].strip()
+            layer, data_type = source.text.split("@")[0].split("/")
+            # Add the 'source' text as the value in the dictionary
+            layers_dict[name_key] = LayerInfo(
+                name=name.text,
+                source=source.text,
+                layer=int(layer),
+                data_type=int(data_type),
+            )
+
+    return layers_dict