ci.yml

name: CI

on:
  push:
    branches: [ "master" ]
  pull_request:
  merge_group:
    branches: [ "master" ]


env:
  PROTOC_VERSION: '3.25.3'
  clippy_rust_version: '1.82'

jobs:
  # Depends on all actions that are required for a "successful" CI run.
  tests-pass:
    name: all systems go
    runs-on: ubuntu-latest
    needs:
      - rustfmt
      - toml_validation
      - clippy
      - docs
      - machete
      - unused_dependencies
      - test
      - msrv
      - minimal-versions
      - kani
      - no-std
      - check-readme
    steps:
      - run: exit 0

  rustfmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt --all --check

  toml_validation:
    runs-on: ubuntu-latest
    container:
      image: tamasfe/taplo:0.8.1
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4
      - name: taplo lint
        run: taplo lint
      - name: taplo fmt
        run: taplo fmt --check --diff

  clippy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: 'recursive'
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - name: install ninja
        uses: ./.github/actions/setup-ninja
      - uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: ${{ env.clippy_rust_version }}
          components: clippy
      - run: cargo clippy --workspace --exclude protobuf --all-features --tests -- -D warnings

  docs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: 'recursive'
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - name: install ninja
        uses: ./.github/actions/setup-ninja
      - uses: dtolnay/rust-toolchain@stable
      - name: "doc --lib --all-features"
        run: |
          cargo doc --lib --no-deps --all-features --document-private-items
        env:
          RUSTDOCFLAGS: -Dwarnings

  machete:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-machete
      - name: Check unused dependencies
        run: cargo machete

  unused_dependencies:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: 'recursive'
      - uses: dtolnay/rust-toolchain@nightly
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - name: install ninja
        uses: ./.github/actions/setup-ninja
      - name: install cargo-udeps
        uses: taiki-e/install-action@cargo-udeps
      - name: cargo udeps
        run: cargo +nightly udeps
      - name: cargo udeps all-targets
        run: cargo +nightly udeps --all-targets

  test:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        toolchain:
          - stable
        os:
          - ubuntu-latest
          - macos-latest
          - windows-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: 'recursive'
      - name: install toolchain (${{ matrix.toolchain }})
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.toolchain }}
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - name: install ninja
        uses: ./.github/actions/setup-ninja
      - uses: Swatinem/rust-cache@v2
      - name: test
        run: cargo test
      - name: test no-default-features
        run: cargo test -p prost-build -p prost-derive -p prost-types --no-default-features

  msrv:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - uses: taiki-e/install-action@cargo-hack
      - uses: Swatinem/rust-cache@v2
      - name: check with no-default-features
        run: cargo hack --rust-version --no-private --no-dev-deps check --no-default-features
      - name: check with all-features
        run: cargo hack --rust-version --no-private --no-dev-deps check --all-features

  minimal-versions:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@nightly
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-hack
      - uses: taiki-e/install-action@cargo-minimal-versions
      - run: cargo minimal-versions --no-private check --all-features

  kani:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Verify with Kani
        uses: model-checking/kani-github-action@v1.1
        with:
          args: |
            -p prost-types
  no-std:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@nightly
      - name: install protoc
        uses: taiki-e/install-action@v2
        with:
          tool: protoc@${{ env.PROTOC_VERSION }}
      - uses: Swatinem/rust-cache@v2
      - name: install cargo-no-std-check
        uses: baptiste0928/cargo-install@v3
        with:
          crate: cargo-no-std-check
      - name: prost cargo-no-std-check
        run: cargo no-std-check --manifest-path prost/Cargo.toml --no-default-features
      - name: prost-types cargo-no-std-check
        run: cargo no-std-check --manifest-path prost-types/Cargo.toml --no-default-features
      # prost-build depends on prost with --no-default-features, but when
      # prost-build is built through the workspace, prost typically has default
      # features enabled due to vagaries in Cargo workspace feature resolution.
      # This additional check ensures that prost-build does not rely on any of
      # prost's default features to compile.
      - name: prost-build check
        run: cargo check --manifest-path prost-build/Cargo.toml
      - name: tests-no-std cargo-no-std-check
        run: cargo no-std-check --manifest-path tests-no-std/Cargo.toml

  check-readme:
    name: Check README
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Verify that both READMEs are identical
        run: diff README.md prost/README.md

      - name: Verify that Prost version is up to date in README
        working-directory: prost
        run: grep -q "$(sed '/^version = /!d' Cargo.toml | head -n1)" README.md