lint.yml

name: Lint
on: [pull_request, workflow_dispatch]

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

jobs:
  lint:
    name: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            compiler: g++
          - os: macOS-latest
            compiler: clang++
    runs-on: ${{ matrix.os }}
    timeout-minutes: 15
    defaults:
      run:
        shell: bash -l {0}
    env:
      CXX: "ccache ${{ matrix.compiler }}"
      CXXFLAGS: "-O2 -g"
      UV_NO_SYNC: "1"
      LD_LIBRARY_PATH: "/usr/local/lib"
    steps:
      # Setup environment
      - uses: actions/checkout@v6
      - name: Set up Python . . .
        uses: actions/setup-python@v6
        with:
          python-version-file: "pyproject.toml"
      - name: Install uv . . .
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true
      - name: "Install libsemigroups_pybind11 dependencies . . ."
        run: uv sync --verbose --locked --no-install-project --no-dev --group lint
      - name: "Find the names of the Python files that will be linted"
        run: echo "PYTHON_FILES=$(uv run ruff check --show-files | grep '\.py$' |  tr -s '\n' ' ')" >> $GITHUB_ENV

      # Lint with ruff and cpplint
      - name: "Lint with ruff . . ."
        run: uv run ruff check
      - name: "Check ruff formatting . . ."
        run: uv run ruff format --diff
      - name: "Lint with cpplint . . ."
        run: uv run cpplint src/*.hpp src/*.cpp

      # Build libsemigroups
      - name: "macOS only: Install libsemigroups dependencies . . ."
        if: ${{ matrix.os == 'macOS-latest' }}
        run: brew install autoconf automake libtool
      - name: "Setup ccache . . ."
        uses: Chocobo1/setup-ccache-action@v1
        with:
          update_packager_index: false
          install_ccache: true
      - name: "Install libsemigroups . . ."
        run: |
          git clone --depth 1 --branch main https://github.com/libsemigroups/libsemigroups.git
          cd libsemigroups
          ./autogen.sh && ./configure CXX="$CXX" CXXFLAGS="$CXXFLAGS" && sudo make install -j4
          ccache -s

      # Build libsemigroups_pybind11
      - name: "Install libsemigroups_pybind11 . . ."
        run: uv sync --verbose --locked --all-extras --no-dev --group lint

      # Lint with ruff and cpplint
      - name: "Lint with pylint . . ."
        run: uv run pylint $PYTHON_FILES
  clang-format:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - name: Run clang-format style check on src
        uses: jidicula/clang-format-action@v4.18.0
        with:
          clang-format-version: 15
          check-path: "src"