Rust Error Handling

rust,ignore

# // Copyright 2023 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
{{#include ../../../../third_party/cxx/book/snippets.rs:rust_result}}

Rust functions that return Result are translated to exceptions on the C++ side.
The exception thrown will always be of type rust::Error, which primarily exposes a way to get the error message string. The error message will come from the error type's Display impl.
A panic unwinding from Rust to C++ will always cause the process to immediately terminate.

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