From e7947069d27ce2cbb7c42176660053569236de99 Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Wed, 28 Sep 2022 23:39:12 -0400
Subject: [PATCH] Fix sourcegen compatibility with Python 3.8

---
 interfaces/sourcegen/sourcegen/_HeaderFileParser.py | 3 ++-
 interfaces/sourcegen/sourcegen/_SourceGenerator.py  | 3 ++-
 interfaces/sourcegen/sourcegen/_dataclasses.py      | 5 +++--
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/interfaces/sourcegen/sourcegen/_HeaderFileParser.py b/interfaces/sourcegen/sourcegen/_HeaderFileParser.py
index 02dc42e657b..f355f26ad24 100644
--- a/interfaces/sourcegen/sourcegen/_HeaderFileParser.py
+++ b/interfaces/sourcegen/sourcegen/_HeaderFileParser.py
@@ -3,6 +3,7 @@
 
 from pathlib import Path
 import re
+from typing import List
 
 from ._dataclasses import HeaderFile, Func, Param
 
@@ -28,7 +29,7 @@ def _parse_func(cls, c_func: str) -> Func:
         name = front[-1]
         return Func(ret_type, name, params)
 
-    def __init__(self, path: Path, ignore_funcs: list[str] = None):
+    def __init__(self, path: Path, ignore_funcs: List[str] = None):
         self._path = path
         self._ignore_funcs = ignore_funcs
 
diff --git a/interfaces/sourcegen/sourcegen/_SourceGenerator.py b/interfaces/sourcegen/sourcegen/_SourceGenerator.py
index 368b909a043..9c97445a287 100644
--- a/interfaces/sourcegen/sourcegen/_SourceGenerator.py
+++ b/interfaces/sourcegen/sourcegen/_SourceGenerator.py
@@ -3,6 +3,7 @@
 
 from abc import ABCMeta, abstractmethod
 from pathlib import Path
+from typing import List
 
 from ._dataclasses import HeaderFile
 
@@ -15,5 +16,5 @@ def __init__(self, out_dir: Path, config: dict):
         pass
 
     @abstractmethod
-    def generate_source(self, headers_files: list[HeaderFile]):
+    def generate_source(self, headers_files: List[HeaderFile]):
         pass
diff --git a/interfaces/sourcegen/sourcegen/_dataclasses.py b/interfaces/sourcegen/sourcegen/_dataclasses.py
index 02d5bd9aaf7..3743d9abaea 100644
--- a/interfaces/sourcegen/sourcegen/_dataclasses.py
+++ b/interfaces/sourcegen/sourcegen/_dataclasses.py
@@ -3,6 +3,7 @@
 
 from dataclasses import dataclass
 from pathlib import Path
+from typing import List
 import re
 from ._helpers import with_unpack_iter
 
@@ -23,7 +24,7 @@ class Func:
 
     ret_type: str
     name: str
-    params: list[Param]
+    params: List[Param]
 
 
 @dataclass(frozen=True)
@@ -32,4 +33,4 @@ class HeaderFile:
     """Represents information about a parsed C header file"""
 
     path: Path
-    funcs: list[Func]
+    funcs: List[Func]