Add Doxygen stuff as it appears pybind macros require it.

docs/doxygen/doxyxml/text.py

@@ -0,0 +1,45 @@
+#
+# Copyright 2010 Free Software Foundation, Inc.
+#
+# This file was generated by gr_modtool, a tool from the GNU Radio framework
+# This file is a part of gr-air-modes
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+#
+"""
+Utilities for extracting text from generated classes.
+"""
+
+def is_string(txt):
+    if isinstance(txt, str):
+        return True
+    try:
+        if isinstance(txt, str):
+            return True
+    except NameError:
+        pass
+    return False
+
+def description(obj):
+    if obj is None:
+        return None
+    return description_bit(obj).strip()
+
+def description_bit(obj):
+    if hasattr(obj, 'content'):
+        contents = [description_bit(item) for item in obj.content]
+        result = ''.join(contents)
+    elif hasattr(obj, 'content_'):
+        contents = [description_bit(item) for item in obj.content_]
+        result = ''.join(contents)
+    elif hasattr(obj, 'value'):
+        result = description_bit(obj.value)
+    elif is_string(obj):
+        return obj
+    else:
+        raise Exception('Expecting a string or something with content, content_ or value attribute')
+    # If this bit is a paragraph then add one some line breaks.
+    if hasattr(obj, 'name') and obj.name == 'para':
+        result += "\n\n"
+    return result