ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

jobs:
  # Find the nightly Rust version and required components from `rust-toolchain.toml` using
  # <https://taplo.tamasfe.dev>, so that we install can install them in later jobs.
  extract-rust-version:
    name: Extract Rust version
    runs-on: ubuntu-latest
    outputs:
      channel: ${{ steps.toolchain.outputs.toolchain }}
      components: ${{ steps.toolchain.outputs.components }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Taplo
        run: |
          curl -fsSL https://github.com/tamasfe/taplo/releases/latest/download/taplo-linux-x86_64.gz \
            | gzip -d - | install -m 755 /dev/stdin /usr/local/bin/taplo

      - name: Extract toolchain
        id: toolchain
        run: |
          TOOLCHAIN=$(taplo get -f='rust-toolchain.toml' 'toolchain.channel')
          COMPONENTS=$(taplo get -f='rust-toolchain.toml' --separator=', ' 'toolchain.components')

          echo toolchain=$TOOLCHAIN >> $GITHUB_OUTPUT
          echo components=$COMPONENTS >> $GITHUB_OUTPUT

  test:
    name: Run tests
    needs: extract-rust-version
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.extract-rust-version.outputs.channel }}
          components: ${{ needs.extract-rust-version.outputs.components }}

      - name: Cache build artifacts
        uses: Leafwing-Studios/cargo-cache@v2
        with:
          sweep-cache: true

      - name: Run tests
        run: |
          cargo test --workspace --all-features --all-targets
          # Workaround for https://github.com/rust-lang/cargo/issues/6669. `--doc` is incompatible
          # with `--all-targets`, so we run them separately.
          cargo test --workspace --all-features --doc

  clippy:
    name: Check with Clippy
    needs: extract-rust-version
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.extract-rust-version.outputs.channel }}
          components: '${{ needs.extract-rust-version.outputs.components }}, clippy'

      - name: Cache build artifacts
        uses: Leafwing-Studios/cargo-cache@v2
        with:
          sweep-cache: true

      - name: Run Clippy
        run: cargo clippy --workspace --all-targets --all-features -- --deny warnings

  rustfmt:
    name: Check with rustfmt
    needs: extract-rust-version
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.extract-rust-version.outputs.channel }}
          components: '${{ needs.extract-rust-version.outputs.components }}, rustfmt'

      - name: Run rustfmt
        run: cargo fmt --all --check

  docs:
    name: Build docs
    needs: extract-rust-version
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.extract-rust-version.outputs.channel }}
          components: ${{ needs.extract-rust-version.outputs.components }}

      - name: Cache build artifacts
        uses: Leafwing-Studios/cargo-cache@v2
        with:
          sweep-cache: true

      - name: Build documentation
        run: cargo doc --workspace --all-features --document-private-items --no-deps