Add 'src/tools/clippy/' from commit 'd2708873ef711ec8ab45df1e984ecf24…

…a96cd369'

git-subtree-dir: src/tools/clippy
git-subtree-mainline: 06c4481
git-subtree-split: d270887

src/tools/clippy/.cargo/config

@@ -0,0 +1,6 @@
+[alias]
+uitest = "test --test compile-test"
+dev = "run --package clippy_dev --bin clippy_dev --manifest-path clippy_dev/Cargo.toml --"
+
+[build]
+rustflags = ["-Zunstable-options"]

src/tools/clippy/.editorconfig

@@ -0,0 +1,19 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.yml]
+indent_size = 2

src/tools/clippy/.gitattributes

@@ -0,0 +1,3 @@
+* text=auto eol=lf
+*.rs text eol=lf whitespace=tab-in-indent,trailing-space,tabwidth=4
+*.fixed linguist-language=Rust

src/tools/clippy/.github/ISSUE_TEMPLATE.md

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+<!--
+Hi there! Whether you've come to make a suggestion for a new lint, an improvement to an existing lint or to report a bug or a false positive in Clippy, you've come to the right place.
+
+For bug reports and false positives, please include the output of `cargo clippy -V` in the report.
+
+Thank you for using Clippy!
+
+Write your comment below this line: -->

src/tools/clippy/.github/PULL_REQUEST_TEMPLATE.md

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+Thank you for making Clippy better!
+
+We're collecting our changelog from pull request descriptions.
+If your PR only updates to the latest nightly, you can leave the
+`changelog` entry as `none`. Otherwise, please write a short comment
+explaining your change.
+
+If your PR fixes an issue, you can add "fixes #issue_number" into this
+PR description. This way the issue will be automatically closed when
+your PR is merged.
+
+If you added a new lint, here's a checklist for things that will be
+checked during review or continuous integration.
+
+- [ ] Followed [lint naming conventions][lint_naming]
+- [ ] Added passing UI tests (including committed `.stderr` file)
+- [ ] `cargo test` passes locally
+- [ ] Executed `cargo dev update_lints`
+- [ ] Added lint documentation
+- [ ] Run `cargo dev fmt`
+
+[lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
+
+Note that you can skip the above if you are just opening a WIP PR in
+order to get feedback.
+
+Delete this line and everything above before opening your PR.
+
+---
+
+changelog: none

src/tools/clippy/.github/deploy.sh

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+#!/bin/bash
+
+set -ex
+
+echo "Removing the current docs for master"
+rm -rf out/master/ || exit 0
+
+echo "Making the docs for master"
+mkdir out/master/
+cp util/gh-pages/index.html out/master
+python3 ./util/export.py out/master/lints.json
+
+if [[ -n $TAG_NAME ]]; then
+  echo "Save the doc for the current tag ($TAG_NAME) and point stable/ to it"
+  cp -r out/master "out/$TAG_NAME"
+  rm -f out/stable
+  ln -s "$TAG_NAME" out/stable
+fi
+
+if [[ $BETA = "true" ]]; then
+  echo "Update documentation for the beta release"
+  cp -r out/master out/beta
+fi
+
+# Generate version index that is shown as root index page
+cp util/gh-pages/versions.html out/index.html
+
+echo "Making the versions.json file"
+python3 ./util/versions.py out
+
+cd out
+# Now let's go have some fun with the cloned repo
+git config user.name "GHA CI"
+git config user.email "gha@ci.invalid"
+
+if git diff --exit-code --quiet; then
+  echo "No changes to the output on this push; exiting."
+  exit 0
+fi
+
+if [[ -n $TAG_NAME ]]; then
+  # Add the new dir
+  git add "$TAG_NAME"
+  # Update the symlink
+  git add stable
+  # Update versions file
+  git add versions.json
+  git commit -m "Add documentation for ${TAG_NAME} release: ${SHA}"
+elif [[ $BETA = "true" ]]; then
+  git add beta
+  git commit -m "Automatic deploy to GitHub Pages (beta): ${SHA}"
+else
+  git add .
+  git commit -m "Automatic deploy to GitHub Pages: ${SHA}"
+fi
+
+git push "$SSH_REPO" "$TARGET_BRANCH"

src/tools/clippy/.github/driver.sh

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+#!/bin/bash
+
+set -ex
+
+# Check sysroot handling
+sysroot=$(./target/debug/clippy-driver --print sysroot)
+test "$sysroot" = "$(rustc --print sysroot)"
+
+if [[ ${OS} == "Windows" ]]; then
+  desired_sysroot=C:/tmp
+else
+  desired_sysroot=/tmp
+fi
+sysroot=$(./target/debug/clippy-driver --sysroot $desired_sysroot --print sysroot)
+test "$sysroot" = $desired_sysroot
+
+sysroot=$(SYSROOT=$desired_sysroot ./target/debug/clippy-driver --print sysroot)
+test "$sysroot" = $desired_sysroot
+
+# Make sure this isn't set - clippy-driver should cope without it
+unset CARGO_MANIFEST_DIR
+
+# Run a lint and make sure it produces the expected output. It's also expected to exit with code 1
+# FIXME: How to match the clippy invocation in compile-test.rs?
+./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/cstring.rs 2> cstring.stderr && exit 1
+sed -e "s,tests/ui,\$DIR," -e "/= help/d" cstring.stderr > normalized.stderr
+diff normalized.stderr tests/ui/cstring.stderr
+
+# TODO: CLIPPY_CONF_DIR / CARGO_MANIFEST_DIR

src/tools/clippy/.github/workflows/clippy.yml

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+name: Clippy Test
+
+on:
+  push:
+    # Ignore bors branches, since they are covered by `clippy_bors.yml`
+    branches-ignore:
+      - auto
+      - try
+    # Don't run Clippy tests, when only textfiles were modified
+    paths-ignore:
+    - 'COPYRIGHT'
+    - 'LICENSE-*'
+    - '**.md'
+    - '**.txt'
+  pull_request:
+    # Don't run Clippy tests, when only textfiles were modified
+    paths-ignore:
+    - 'COPYRIGHT'
+    - 'LICENSE-*'
+    - '**.md'
+    - '**.txt'
+
+env:
+  RUST_BACKTRACE: 1
+  CARGO_TARGET_DIR: '${{ github.workspace }}/target'
+  NO_FMT_TEST: 1
+
+jobs:
+  base:
+    runs-on: ubuntu-latest
+
+    steps:
+    # Setup
+    - uses: rust-lang/simpleinfra/github-actions/cancel-outdated-builds@master
+      with:
+        github_token: "${{ secrets.github_token }}"
+
+    - name: rust-toolchain
+      uses: actions-rs/toolchain@v1.0.3
+      with:
+        toolchain: nightly
+        target: x86_64-unknown-linux-gnu
+        profile: minimal
+
+    - name: Checkout
+      uses: actions/checkout@v2.0.0
+
+    - name: Run cargo update
+      run: cargo update
+
+    - name: Cache cargo dir
+      uses: actions/cache@v1
+      with:
+        path: ~/.cargo
+        key: ${{ runner.os }}-x86_64-unknown-linux-gnu-${{ hashFiles('Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-x86_64-unknown-linux-gnu
+
+    - name: Master Toolchain Setup
+      run: bash setup-toolchain.sh
+
+    # Run
+    - name: Set LD_LIBRARY_PATH (Linux)
+      run: |
+        SYSROOT=$(rustc --print sysroot)
+        echo "::set-env name=LD_LIBRARY_PATH::${SYSROOT}/lib${LD_LIBRARY_PATH+:${LD_LIBRARY_PATH}}"
+
+    - name: Build
+      run: cargo build --features deny-warnings
+
+    - name: Test
+      run: cargo test --features deny-warnings
+
+    - name: Test clippy_lints
+      run: cargo test --features deny-warnings
+      working-directory: clippy_lints
+
+    - name: Test rustc_tools_util
+      run: cargo test --features deny-warnings
+      working-directory: rustc_tools_util
+
+    - name: Test clippy_dev
+      run: cargo test --features deny-warnings
+      working-directory: clippy_dev
+
+    - name: Test cargo-clippy
+      run: ../target/debug/cargo-clippy
+      working-directory: clippy_workspace_tests
+
+    - name: Test clippy-driver
+      run: bash .github/driver.sh
+      env:
+        OS: ${{ runner.os }}
+
+    # Cleanup
+    - name: Run cargo-cache --autoclean
+      run: |
+        cargo +nightly install cargo-cache --no-default-features --features ci-autoclean cargo-cache
+        cargo cache