From ba5f6301c40b91f86634cac89932301c73e25b7b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9o=20Lam?= <leo@leolam.fr>
Date: Mon, 26 Dec 2022 17:57:36 +0100
Subject: [PATCH] py: Fix __contains__ not converting to map key type since
 pybind11 2.8.0

Fixes a pybind11 API breaking change that was uncovered by issue #25
---
 py/pybind11_common.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/py/pybind11_common.h b/py/pybind11_common.h
index 13dd598..1d22a6a 100644
--- a/py/pybind11_common.h
+++ b/py/pybind11_common.h
@@ -140,6 +140,17 @@ py::class_<Map, holder_type> BindMap(py::handle scope, const std::string& name,
                      }),
                      "dictionary"_a)
                 .def(py::self == py::self)
+                .def(
+                    "__contains__",
+                    [](const Map& map, const py::object& arg) {
+                      try {
+                        auto key = py::cast<Key>(arg);
+                        return map.find(key) != map.end();
+                      } catch (const py::cast_error&) {
+                        return false;
+                      }
+                    },
+                    py::prepend{})
                 .def("clear", &Map::clear)
                 .def(
                     "get",