New function CallAndCatchPybind11Exceptions, to convert all pybind11 exceptions into absl::Status.

PiperOrigin-RevId: 858213368

Author: pybind11_abseil authors

pybind11_abseil/compat/BUILD

@@ -44,3 +44,13 @@ pybind_library(
         "@com_google_absl//absl/status",
     ],
 )
+
+pybind_library(
+    name = "status_from_cpp_exc",
+    hdrs = ["status_from_cpp_exc.h"],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":status_from_py_exc",
+        "@com_google_absl//absl/log:check",
+    ],
+)

pybind11_abseil/compat/status_from_cpp_exc.h

@@ -0,0 +1,37 @@
+#ifndef PYBIND11_ABSEIL_COMPAT_STATUS_FROM_CPP_EXC_H_
+#define PYBIND11_ABSEIL_COMPAT_STATUS_FROM_CPP_EXC_H_
+
+#include "absl/log/check.h"
+#include "third_party/pybind11/include/pybind11/pytypes.h"
+#include "pybind11_abseil/compat/status_from_py_exc.h"
+
+namespace pybind11_abseil::compat {
+
+// This function is intended for C++ code which uses pybind11 code,
+// from a C++ thread of from an embedded Python interpreter.
+//
+// It executes the given function, catches potential C++ exceptions
+// and converts them to absl::Status.
+//
+// The status code depends on the exception type (see
+//   GetPyExceptionStatusCodeMap).
+// The status message always starts with the Python exception class name.
+// The Python traceback is not preserved.
+template <typename Func>
+inline decltype(std::declval<Func>()()) CallAndCatchPybind11Exceptions(
+    Func&& func) {
+  DCHECK(PyGILState_Check());
+  try {
+    return std::forward<Func>(func)();
+  } catch (pybind11::error_already_set& e) {
+    e.restore();
+    return StatusFromPyExcGivenErrOccurred();
+  } catch (pybind11::builtin_exception& e) {
+    e.set_error();
+    return StatusFromPyExcGivenErrOccurred();
+  }
+}
+
+}  // namespace pybind11_abseil::compat
+
+#endif  // PYBIND11_ABSEIL_COMPAT_STATUS_FROM_CPP_EXC_H_