name: ci
on:
  pull_request:
  push:
    branches:
    - master
  schedule:
  - cron: '00 01 * * *'
jobs:
  test:
    name: test
    env:
      # For some builds, we use cross to test on 32-bit and big-endian
      # systems.
      CARGO: cargo
      # When CARGO is set to CROSS, TARGET is set to `--target matrix.target`.
      TARGET:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        build:
        - pinned
        - stable
        - stable-32
        - stable-mips
        - beta
        - nightly
        - macos
        - win-msvc
        - win-gnu
        include:
        - build: pinned
          os: ubuntu-18.04
          rust: 1.28.0
        - build: stable
          os: ubuntu-18.04
          rust: stable
        - build: stable-32
          os: ubuntu-18.04
          rust: stable
          target: i686-unknown-linux-gnu
        - build: stable-mips
          os: ubuntu-18.04
          rust: stable
          target: mips64-unknown-linux-gnuabi64
        - build: beta
          os: ubuntu-18.04
          rust: beta
        - build: nightly
          os: ubuntu-18.04
          rust: nightly
        - build: macos
          os: macos-latest
          rust: stable
        - build: win-msvc
          os: windows-2019
          rust: stable
        - build: win-gnu
          os: windows-2019
          rust: stable-x86_64-gnu
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
        profile: minimal
        override: true
    - name: Use Cross
      if: matrix.target != ''
      run: |
        # FIXME: to work around bugs in latest cross release, install master.
        # See: https://github.com/rust-embedded/cross/issues/357
        cargo install --git https://github.com/rust-embedded/cross
        echo "::set-env name=CARGO::cross"
        echo "::set-env name=TARGET::--target ${{ matrix.target }}"
    - name: Show command used for Cargo
      run: |
        echo "cargo command is: ${{ env.CARGO }}"
        echo "target flag is: ${{ env.TARGET }}"
    - name: Show CPU info for debugging
      if: matrix.os == 'ubuntu-18.04'
      run: lscpu
    - run: ${{ env.CARGO }} build --verbose $TARGET
    - run: ${{ env.CARGO }} build --verbose $TARGET --no-default-features
    - run: ${{ env.CARGO }} doc --verbose $TARGET
    # Our dev dependencies evolve more rapidly than we'd like, so only run
    # tests when we aren't pinning the Rust version.
    - if: matrix.build != 'pinned'
      name: Show byte order for debugging
      run: ${{ env.CARGO }} test --verbose $TARGET byte_order -- --nocapture
    - if: matrix.build != 'pinned'
      run: ${{ env.CARGO }} test --verbose $TARGET
    - if: matrix.build == 'stable'
      name: Run under different SIMD configurations
      run: |
        set -x

        # Enable libc while using SIMD, libc won't be used.
        # (This is to ensure valid logic in the picking process.)
        cargo test --verbose --features libc

        preamble="--cfg memchr_disable_auto_simd"

        # Force use of fallback without libc.
        RUSTFLAGS="$preamble" cargo test --verbose

        # Force use of libc.
        RUSTFLAGS="$preamble" cargo test --verbose --features libc

        preamble="$preamble --cfg memchr_runtime_simd"
        # Force use of fallback even when SIMD is enabled.
        RUSTFLAGS="$preamble" cargo test --verbose

        # For some reason, cargo seems to get confused which results in
        # link errors. So wipe the slate clean.
        cargo clean
        # Force use of sse2 only
        RUSTFLAGS="$preamble --cfg memchr_runtime_sse2" cargo test --verbose

        # ... and wipe it again. So weird.
        cargo clean
        # Force use of avx only
        RUSTFLAGS="$preamble --cfg memchr_runtime_avx" cargo test --verbose
    - if: matrix.build == 'nightly'
      name: Run benchmarks as tests
      run: cargo bench --manifest-path bench/Cargo.toml --verbose -- --test

  build-for-non_sse-target:
    name: build for non-SSE target
    runs-on: ubuntu-18.04
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: nightly
        profile: minimal
        override: true
        components: rust-src
    - run: cargo build -Z build-std=core --target=src/tests/x86_64-soft_float.json --verbose --no-default-features

  test-with-miri:
    name: test with miri
    runs-on: ubuntu-18.04
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: nightly
        profile: minimal
        override: true
        components: miri
    - name: Show CPU info for debugging
      run: lscpu
    - run: cargo miri test --verbose
    - run: cargo miri test --verbose --no-default-features
    - run: cargo miri test --verbose --features libc

  rustfmt:
    name: rustfmt
    runs-on: ubuntu-18.04
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: stable
        override: true
        profile: minimal
        components: rustfmt
    - name: Check formatting
      run: |
        cargo fmt -- --check
    - name: Check formatting on benchmarks
      run: |
        cargo fmt --manifest-path bench/Cargo.toml -- --check