mypy: add None return types to functions that don't return a value

cxxheaderparser/dump.py

@@ -9,7 +9,7 @@ from .options import ParserOptions
 from .simple import parse_file
 
 
-def dumpmain():
+def dumpmain() -> None:
 
     parser = argparse.ArgumentParser()
     parser.add_argument("header")

cxxheaderparser/gentest.py

@@ -46,7 +46,7 @@ def nondefault_repr(data):
     return _inner_repr(data)
 
 
-def gentest(infile: str, name: str, outfile: str, verbose: bool):
+def gentest(infile: str, name: str, outfile: str, verbose: bool) -> None:
     # Goal is to allow making a unit test as easy as running this dumper
     # on a file and copy/pasting this into a test
 
@@ -64,7 +64,7 @@ def gentest(infile: str, name: str, outfile: str, verbose: bool):
     stmt = inspect.cleandoc(
         f'''
     
-        def test_{name}():
+        def test_{name}() -> None:
             content = """
               {content}
             """

cxxheaderparser/parser.py

@@ -544,7 +544,7 @@ class CxxParser:
 
         return TemplateDecl(params)
 
-    def _parse_template(self, tok: LexToken, doxygen: typing.Optional[str]):
+    def _parse_template(self, tok: LexToken, doxygen: typing.Optional[str]) -> None:
 
         template = self._parse_template_decl()
 
@@ -2128,7 +2128,7 @@ class CxxParser:
         template: typing.Optional[TemplateDecl],
         is_typedef: bool,
         is_friend: bool,
-    ):
+    ) -> None:
         tok = self._next_token_must_be("operator")
 
         if is_typedef:

cxxheaderparser/parserstate.py

@@ -57,7 +57,7 @@ class ExternBlockState(State):
         super().__init__(parent)
         self.linkage = linkage
 
-    def _finish(self, visitor: "CxxVisitor"):
+    def _finish(self, visitor: "CxxVisitor") -> None:
         visitor.on_extern_block_end(self)
 
 

cxxheaderparser/simple.py

@@ -185,7 +185,7 @@ class SimpleCxxVisitor:
     namespace: NamespaceScope
     block: Block
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.namespace = NamespaceScope("")
         self.block = self.namespace
 
@@ -259,7 +259,7 @@ class SimpleCxxVisitor:
         ns = UsingNamespace("::".join(namespace))
         self.block.using_ns.append(ns)
 
-    def on_using_alias(self, state: State, using: UsingAlias):
+    def on_using_alias(self, state: State, using: UsingAlias) -> None:
         self.block.using_alias.append(using)
 
     def on_using_declaration(self, state: State, using: UsingDecl) -> None:
@@ -288,7 +288,7 @@ class SimpleCxxVisitor:
     def on_class_method(self, state: ClassBlockState, method: Method) -> None:
         self.block.methods.append(method)
 
-    def on_class_friend(self, state: ClassBlockState, friend: FriendDecl):
+    def on_class_friend(self, state: ClassBlockState, friend: FriendDecl) -> None:
         self.block.friends.append(friend)
 
     def on_class_end(self, state: ClassBlockState) -> None:

cxxheaderparser/visitor.py

@@ -119,7 +119,7 @@ class CxxVisitor(Protocol):
             using namespace std;
         """
 
-    def on_using_alias(self, state: State, using: UsingAlias):
+    def on_using_alias(self, state: State, using: UsingAlias) -> None:
         """
         .. code-block:: c++
 
@@ -171,7 +171,7 @@ class CxxVisitor(Protocol):
         Called when a field of a class is encountered
         """
 
-    def on_class_friend(self, state: ClassBlockState, friend: FriendDecl):
+    def on_class_friend(self, state: ClassBlockState, friend: FriendDecl) -> None:
         """
         Called when a friend declaration is encountered
         """