generate.yml

name: cargo-generate

on:
  push:
    branches-ignore: [
        # Branches with the `gh-readonly-queue` prefix are used by the
        # merge queue, so they are already covered by the `merge_group` event.
        "gh-readonly-queue/**",
      ]
  pull_request:
  merge_group:

env:
  #
  # Dependency versioning
  #

  # This is the MSRV used by `wgpu` itself.
  WGPU_MSRV: "1.87"
  RUSTFLAGS: -D warnings

# Every time a PR is pushed to, cancel any previous jobs. This
# makes us behave nicer to github and get faster turnaround times
# on PRs that are pushed to multiple times in rapid succession.
concurrency:
  group: ${{github.workflow}}-${{github.ref}}
  cancel-in-progress: ${{github.event_name == 'pull_request'}}

jobs:
  discover-standalone-examples:
    permissions: {}

    timeout-minutes: 5

    runs-on: ubuntu-latest

    name: "Discover Standalone Examples"

    outputs:
      matrix: ${{ steps.discover.outputs.matrix }}

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Find standalone examples
        id: discover
        run: |
          matrix=$(jq -nc --args '{
            include: [$ARGS.positional[] | rtrimstr("/") | {
              path: .,
              name: (split("/")[-1] | gsub("_"; "-"))
            }]
          }' examples/standalone/*/)
          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
          echo "$matrix"

  cargo-generate:
    permissions: {}

    timeout-minutes: 5

    runs-on: ubuntu-latest

    needs: discover-standalone-examples

    strategy:
      fail-fast: false
      matrix: ${{ fromJSON(needs.discover-standalone-examples.outputs.matrix) }}

    name: "${{ matrix.name }}"

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      # We can't rely on an override here, as that would only set
      # the toolchain for the current directory, not the newly generated project.
      - name: Install repo MSRV toolchain
        run: |
          rustup toolchain install ${{ env.WGPU_MSRV }} --no-self-update --profile=minimal
          cargo -V

      - name: Disable debug symbols
        shell: bash
        run: |
          mkdir -p .cargo

          cat <<EOF >> .cargo/config.toml
            [profile.dev]
            debug = false
          EOF

      - name: Caching
        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
        with:
          key: cargo-generate-${{ matrix.name }}
          env-vars: ImageVersion
          save-if: ${{ github.ref == 'refs/heads/trunk' }}

      - name: Install `cargo-generate`
        uses: taiki-e/install-action@43aecc8d72668fbcfe75c31400bc4f890f1c5853 # v2.83.2
        with:
          tool: cargo-generate

      - name: Run `cargo-generate`
        env:
          MATRIX_NAME: ${{ matrix.name }}
          MATRIX_PATH: ${{ matrix.path }}
        run: |
          cd ..
          cargo generate --path wgpu --name ${MATRIX_NAME} ${MATRIX_PATH}

      - name: Check generated files
        env:
          MATRIX_NAME: ${{ matrix.name }}
        run: |
          cd ../${MATRIX_NAME}/
          cat <<EOF >> Cargo.toml
            [patch.crates-io]
            wgpu = { path = "../wgpu/wgpu" }
          EOF
          cargo +${{ env.WGPU_MSRV }} check