name: CI

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

env:
  RUST_BACKTRACE: 1

jobs:
  test:
    name: Test Rust - ${{ matrix.build }}
    runs-on: ${{ matrix.os }}
    env:
      CARGO: cargo
      TARGET: ""
    strategy:
      fail-fast: false
      matrix:
        build:
          - macos
          - linux
          - linux32
          - win64-msvc
          - win64-gnu
          - win32-msvc
          - win32-gnu
          - arm32
          - arm64
          - mips32
          - mips64
        include:
          - build: linux
            os: ubuntu-latest
            rust: nightly
          - build: macos
            os: macos-latest
            rust: nightly
          - build: win64-msvc
            os: windows-2019
            rust: nightly
          - build: win64-gnu
            os: windows-2019
            rust: nightly-x86_64-gnu
          - build: win32-msvc
            os: windows-2019
            rust: nightly-i686-msvc
          - build: win32-gnu
            os: windows-2019
            rust: nightly-i686-gnu
          - build: linux32
            os: ubuntu-latest
            rust: nightly
            target: i686-unknown-linux-gnu
          # These should prob. be more generic arm targets and not android.
          - build: arm32
            os: ubuntu-latest
            rust: nightly
            target: armv7-linux-androideabi
          - build: arm64
            os: ubuntu-latest
            rust: nightly
            target: aarch64-linux-android
          # Mips is big endian.
          - build: mips32
            os: ubuntu-latest
            rust: nightly
            target: mips-unknown-linux-gnu
          - build: mips64
            os: ubuntu-latest
            rust: nightly
            target: mips64-unknown-linux-gnuabi64
          - build: riscv
            os: ubuntu-latest
            rust: nightly
            target: riscv64gc-unknown-linux-gnu

    steps:
      - uses: actions/checkout@v2
      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.rust }}
          profile: minimal
          override: true

      - name: Setup cross if needed
        if: matrix.target != ''
        run: |
          cargo install cross
          echo "CARGO=cross" >> $GITHUB_ENV
          echo "TARGET=--target ${{ matrix.target }}" >> $GITHUB_ENV

      - name: Show command used for Cargo
        run: |
          echo "cargo command is: ${{ env.CARGO }}"
          echo "target flag is: ${{ env.TARGET }}"

      - name: Test
        run: ${{ env.CARGO }} test --verbose ${{ env.TARGET }}

  miri:
    name: Miri
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: "-Zrandomize-layout"
      MIRIFLAGS: ""
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - uses: hecrj/setup-rust-action@v1
        with:
          rust-version: nightly
          components: miri
      - name: Run tests
        run: cargo miri test

  cargo-clippy:
    name: Lint
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: -Dwarnings
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - uses: dtolnay/rust-toolchain@nightly
      - name: Run cargo clippy (default features)
        run: cargo clippy --all-targets --verbose -- -D clippy::all

  # Ensure patch is formatted.
  fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - uses: dtolnay/rust-toolchain@nightly
      - name: Check formatting
        run: cargo fmt --all -- --check

  # Check doc reference links are all valid.
  doc:
    name: Doc check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - uses: dtolnay/rust-toolchain@nightly
      - name: Check docs
        # Note: needs cargo rustdoc, not cargo doc.
        run: cargo rustdoc --all-features -- -D warnings

  sanitizers:
    name: Test sanitizer ${{ matrix.sanitizer }}
    runs-on: ubuntu-latest
    env:
      RUST_BACKTRACE: 0
      # only used by asan, but we set it for all of them cuz its easy
      ASAN_OPTIONS: detect_stack_use_after_return=1

    strategy:
      fail-fast: false
      matrix:
        sanitizer: [address, memory]
        include:
          - sanitizer: memory
            extra_rustflags: "-Zsanitizer-memory-track-origins"
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rust-src

      - name: Test with sanitizer
        env:
          RUSTFLAGS: -Zsanitizer=${{ matrix.sanitizer }} ${{ matrix.extra_rustflags }}
          RUSTDOCFLAGS: -Zsanitizer=${{ matrix.sanitizer }} ${{ matrix.extra_rustflags }}
        run: |
          echo "note: RUSTFLAGS='$RUSTFLAGS'"
          cargo -Zbuild-std test --target=x86_64-unknown-linux-gnu