.travis.yml

sudo: required

language: rust

# only build pushes to master
# prs are build separately
# https://docs.travis-ci.com/user/pull-requests/#how-pull-requests-are-built
branches:
  only:
  - master

matrix:
  fast_finish: true
  include:
    - rust: nightly-2018-10-16
    - rust: beta
    - rust: stable

script:
- |
  if [[ "$TRAVIS_RUST_VERSION" == nightly-2018-10-16 ]]; then
    cargo fmt --all -- --check
  fi
- cargo test
- |
  if [[ "$TRAVIS_RUST_VERSION" == nightly-2018-10-16 ]]; then
    cargo bench
  fi

# Cache `cargo install`ed tools, but don't cache the project's `target`
# directory (which ends up over-caching and filling all disk space!)
# https://levans.fr/rust_travis_cache.html
cache:
  directories:
    - /home/travis/.cargo

before_cache:
  # But don't cache the cargo registry
  - rm -rf /home/travis/.cargo/registry
  # Travis can't cache files that are not readable by "others"
  - chmod -R a+r $HOME/.cargo

addons:
  apt:
    packages:
      # required by tarpaulin code coverage tool
      - libssl-dev

install: |
  # should only be necessary until rustfmt produces consistent results in stable/nightly
  # see also https://github.com/xd009642/tarpaulin/issues/150 for tarpaulin nightly dependency
  if [[ "$TRAVIS_RUST_VERSION" == nightly-2018-10-16 ]]; then
    `RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install --force cargo-tarpaulin`
    rustup component add rustfmt-preview
  fi

after_success:
  # report coverage to coveralls
  # see https://github.com/xd009642/tarpaulin for more information
  - '[ $TRAVIS_EVENT_TYPE != "cron" ] &&
    [ $TRAVIS_RUST_VERSION = nightly-2018-10-16 ] &&
    [ $TRAVIS_BRANCH = master ] &&
    [ $TRAVIS_PULL_REQUEST = false ] &&
    cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID || true'
  - >-
    [ $TRAVIS_RUST_VERSION = stable ] && [ $TRAVIS_BRANCH = master ] && [
    $TRAVIS_PULL_REQUEST = false ] && cargo doc --no-deps && echo "<meta
    http-equiv=refresh content=0;url=`echo $TRAVIS_REPO_SLUG | cut -d / -f
    2`/index.html>" > target/doc/index.html

deploy:
  provider: pages
  skip-cleanup: true
  github-token: $GH_TOKEN
  local-dir: target/doc
  keep-history: false
  on:
    branch: master
    condition: $TRAVIS_RUST_VERSION = stable