rust.yml

name: Rust

on:
  push:
    branches: [ master ]
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    branches: [ master ]

concurrency:
  group: ${{ github.ref }}-${{ github.workflow }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always

jobs:
  formatting:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3

    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: stable
        components: rustfmt

    - name: Check formatting
      run: cargo fmt --all -- --check

  build-nostd:
    runs-on: ubuntu-latest
    if: github.event.pull_request.draft == false

    needs:
    - formatting

    steps:
    - uses: actions/checkout@v3

    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: nightly
        targets: thumbv7em-none-eabihf

    - name: Build no_std
      run: cargo build --target thumbv7em-none-eabihf -Z avoid-dev-deps

  tests:
    runs-on: ubuntu-latest
    if: github.event.pull_request.draft == false

    needs:
    - formatting

    strategy:
      matrix:
        rust:
          - stable
          - beta
          - nightly
          - 1.61.0  # MSRV

    steps:
    - uses: actions/checkout@v3

    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: ${{ matrix.rust }}

    - name: Check
      run: cargo c

    - name: Check examples
      run: cargo c --examples

    - name: Run tests
      run: cargo test --lib

  docs:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3

    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: stable
    
    - name: Check doc links
      run: |
        cargo doc --color=never &> ./out
        cat ./out
        ! grep "^warning:" ./out