Add Rust wrapper for score::cpp::stop_token

[eclipse-impl]

No description provided.

[github-actions]

The created documentation from the pull request is available at: docu-html

[Copilot]

Pull request overview

Adds CXX-based Rust bindings for FutureCpp stop tokens and sources.

Changes:

• Exposes stop-state creation, querying, equality, and cancellation.
• Adds C++ bridge adapters and Rust unit tests.
• Integrates the crate with Bazel and Cargo.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
score/language/rust/stop_token/src/lib.rs	Implements the Rust API and tests.
score/language/rust/stop_token/cpp/stop_token_adapter.h	Declares C++ bridge functions.
score/language/rust/stop_token/cpp/stop_token_adapter.cpp	Implements FutureCpp forwarding.
score/language/rust/stop_token/Cargo.toml	Defines the Rust crate.
score/language/rust/stop_token/BUILD	Adds Bazel bridge, library, and test targets.
Cargo.toml	Registers the workspace member.
Cargo.lock	Locks the new CXX dependency graph.

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[arkjedrz]

What happens when You cargo build the project?

[eclipse-impl]

it works:

$ cargo build
   Compiling score_log_fmt v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/log_rust/score_log_fmt)
   Compiling foldhash v0.2.0
   Compiling memres v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/language/rust/memres)
   Compiling libc v0.2.189
   Compiling syn v2.0.119
   Compiling link-cplusplus v1.0.12
warning: missing documentation for a struct field
   --> score/language/rust/memres/src/lib.rs:141:17
    |
141 |     Monotonic { size: usize },
    |                 ^^^^^^^^^^^
    |
    = note: requested on the command line with `-W missing-docs`

warning: `memres` (lib) generated 1 warning
   Compiling cxx v1.0.199
   Compiling stop_token v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/language/rust/stop_token)
   Compiling score_log_fmt_macro v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/log_rust/score_log_fmt_macro)
   Compiling libcpp_derive v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/language/rust/libcpp_derive)
warning: missing documentation for the crate
   --> score/language/rust/libcpp_derive/lib.rs:14:1
    |
 14 | / use proc_macro2::TokenStream;
 15 | | use quote::{format_ident, quote};
 16 | | use syn::parse::Parse;
 17 | | use syn::spanned::Spanned;
...   |
234 | | }
    | |_^
    |
    = note: requested on the command line with `-W missing-docs`

warning: `libcpp_derive` (lib) generated 1 warning
   Compiling libcpp v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/language/rust/libcpp)
   Compiling score_log v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/log_rust/score_log)
   Compiling result_rs v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/result/rust)
warning: missing documentation for a struct
   --> score/result/rust/result.rs:156:5
    |
156 |     pub struct Expected<T, E> {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: requested on the command line with `-W missing-docs`

   Compiling allocator v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/allocator)
   Compiling stdout_logger v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/log_rust/stdout_logger)
   Compiling pal v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/pal)
warning: `result_rs` (lib) generated 1 warning
   Compiling sync v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/sync)
   Compiling containers v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/containers_rust)
   Compiling thread v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/thread)
   Compiling score_testing_macros v0.0.1 (/home/q474126/code/eclipse-score-baselibs/score/testing_macros)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.65s

[arkjedrz]

Replace with a regular FFI layer.