dtolnay/cxx

Support rust::Vec and std::vector of SharedPtr to Opaque types

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#741 opened on Mar 17, 2021

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help wanted

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Description

I understand, why we can't hold opaque types in both vectors, but why we can't hold SharedPtrs to this types?

Those functions are currently unavailable.

#[cxx::bridge]
mod ffi {
  unsafe extern "C++" {
    fn opaqueVector() -> &'static CxxVector<SharedPtr<CxxString>>;
    fn opacueVec() -> Vec<SharedPtr<CxxString>>;
  }
}

Contributor guide

Research direction
Understand why opaque types in vectors are unsupported, then implement support for SharedPtr<T> in CxxVector and Vec by adding necessary trait implementations and code generation for vector element types.
Tech stack
rust
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustC++
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40