name: Rust

on:
  push:
    branches: [ '**' ]
  pull_request:
    branches: [ '**' ]

env:
  CARGO_TERM_COLOR: always
  RUSTFLAGS: '-D warnings'
  RUSTDOCFLAGS: '-D warnings'

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          # 32-bit target
          - target: i686-unknown-linux-gnu
            deps: sudo apt update && sudo apt install gcc-multilib
          # 64-bit target
          - target: x86_64-unknown-linux-gnu
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
      - run: rustup target add ${{ matrix.target }}
      - run: ${{ matrix.deps }}
      - run: cargo test --target ${{ matrix.target }} --no-default-features --lib --tests
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features alloc --lib
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features fast --lib
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features rand_core --lib --tests
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features alloc,rand_core --lib --tests
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features fast,rand_core --lib --tests
      - run: cargo test --target ${{ matrix.target }} --no-default-features --features alloc,fast,rand_core --lib --tests
      - run: cargo test --target ${{ matrix.target }}
      - run: cargo test --target ${{ matrix.target }} --features batch
      - run: cargo test --target ${{ matrix.target }} --features digest,rand_core
      - run: cargo test --target ${{ matrix.target }} --features serde
      - run: cargo test --target ${{ matrix.target }} --features pem
      - run: cargo test --target ${{ matrix.target }} --all-features

  build-simd:
    name: Test simd backend (nightly)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@nightly
      - env:
          RUSTFLAGS: '--cfg curve25519_dalek_backend="simd" -C target_feature=+avx2'
        run: cargo build --target x86_64-unknown-linux-gnu
      - env:
          RUSTFLAGS: '--cfg curve25519_dalek_backend="simd" -C target_feature=+avx512ifma'
        run: cargo build --target x86_64-unknown-linux-gnu

  msrv:
    name: Current MSRV is 1.60.0
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      # First delete the checked-in `Cargo.lock`. We're going to regenerate it
    - run: rm Cargo.lock
      # Now run `cargo +nightly -Z minimal-verisons check` in order to get a
      # Cargo.lock with the oldest possible deps
    - uses: dtolnay/rust-toolchain@nightly
    - run: cargo -Z minimal-versions check --no-default-features --features serde
      # Now check that `cargo build` works with respect to the oldest possible
      # deps and the stated MSRV
    - uses: dtolnay/rust-toolchain@1.60.0
    - run: cargo build

  bench:
    name: Check that benchmarks compile
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - uses: dtolnay/rust-toolchain@stable
    - run: cargo build --benches --features batch

  rustfmt:
    name: Check formatting
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt --all -- --check

  clippy:
    name: Check that clippy is happy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@1.65
        with:
          components: clippy
      - run: cargo clippy

  doc:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable
      - run: cargo doc --all-features