Consume function body if present after trailing return type

cxxheaderparser/parser.py

@@ -1914,11 +1914,12 @@ def _parse_fn_end(self, fn: Function) -> None:
                     fn_template = fn_template[0]
                 fn_template.raw_requires_post = self._parse_requires(rtok)
 
+        if self.lex.token_if("ARROW"):
+            self._parse_trailing_return_type(fn)
+
         if self.lex.token_if("{"):
             self._discard_contents("{", "}")
             fn.has_body = True
-        elif self.lex.token_if("ARROW"):
-            self._parse_trailing_return_type(fn)
 
     def _parse_method_end(self, method: Method) -> None:
         """
@@ -1963,6 +1964,9 @@ def _parse_method_end(self, method: Method) -> None:
                 method.ref_qualifier = tok_value
             elif tok_value == "->":
                 self._parse_trailing_return_type(method)
+                if self.lex.token_if("{"):
+                    self._discard_contents("{", "}")
+                    method.has_body = True
                 break
             elif tok_value == "throw":
                 tok = self._next_token_must_be("(")

tests/test_fn.py

@@ -1194,3 +1194,67 @@ class C {
             ]
         )
     )
+
+
+def test_fn_trailing_return_with_body() -> None:
+    content = """
+      auto test() -> void
+      {
+      }
+    """
+    data = parse_string(content, cleandoc=True)
+
+    assert data == ParsedData(
+        namespace=NamespaceScope(
+            functions=[
+                Function(
+                    return_type=Type(
+                        typename=PQName(segments=[FundamentalSpecifier(name="void")])
+                    ),
+                    name=PQName(segments=[NameSpecifier(name="test")]),
+                    parameters=[],
+                    has_body=True,
+                    has_trailing_return=True,
+                )
+            ]
+        )
+    )
+
+
+def test_method_trailing_return_with_body() -> None:
+    content = """
+      struct X {
+          auto test() -> void
+          {
+          }
+      };
+    """
+    data = parse_string(content, cleandoc=True)
+
+    assert data == ParsedData(
+        namespace=NamespaceScope(
+            classes=[
+                ClassScope(
+                    class_decl=ClassDecl(
+                        typename=PQName(
+                            segments=[NameSpecifier(name="X")], classkey="struct"
+                        )
+                    ),
+                    methods=[
+                        Method(
+                            return_type=Type(
+                                typename=PQName(
+                                    segments=[FundamentalSpecifier(name="void")]
+                                )
+                            ),
+                            name=PQName(segments=[NameSpecifier(name="test")]),
+                            parameters=[],
+                            has_body=True,
+                            has_trailing_return=True,
+                            access="public",
+                        )
+                    ],
+                )
+            ]
+        )
+    )