Add helper function to extract IFCPatch arguments

src/blenderbim/blenderbim/bim/module/patch/helper.py

@@ -0,0 +1,51 @@
+import typing
+import inspect
+import collections
+
+
+def extract_docs(patcher, boilerplate_args=None):
+    inputs = collections.OrderedDict()
+    function_init = patcher.__init__
+    node_data = {"patcher": patcher}
+
+    signature = inspect.signature(function_init)
+    for name, parameter in signature.parameters.items():
+        if name == "self":
+            continue
+        inputs[name] = {"name": name}
+        if isinstance(parameter.default, (str, float, int, bool)):
+            inputs[name]["default"] = parameter.default
+
+    type_hints = typing.get_type_hints(function_init)
+    for name, socket_data in inputs.items():
+        type_hint = type_hints.get(name, None)
+        if type_hint is None: # The argument is not type-hinted. (Or hinted to None ??)
+            continue
+        if isinstance(type_hint, typing._UnionGenericAlias):
+            inputs[name]["type"] = [t.__name__ for t in typing.get_args(type_hint)]
+        else:
+            inputs[name]["type"] = type_hint.__name__
+
+    description = ""
+    doc = function_init.__doc__
+    if doc is not None:
+        for i, line in enumerate(doc.split("\n")):
+            line = line.strip()
+            if i == 0:
+                node_data["name"] = line
+            elif line.startswith(":return:"):
+                node_data["output"] = {"name": line.split(":")[2].strip(), "description": line.split(":")[3].strip()}
+            elif line.startswith(":param"):
+                param_name = line.split(":")[1].strip().replace("param ", "")
+                inputs[param_name]["description"] = line.split(":")[2].strip()
+            elif i >= 2:
+                description += line
+            
+        node_data["description"] = description.strip()
+    node_data["inputs"] = inputs
+
+    if boilerplate_args is not None:
+        for arg in boilerplate_args: # Remove boilerplate arguments
+            node_data["inputs"].pop(arg, None)
+    return node_data
+