Fix `clippy::unnecessary_first_then_check` lint #656

Workflow file for this run

	env:
	# We aim to always test with the latest stable Rust toolchain, however we pin to a specific
	# version like 1.70. Note that we only specify MAJOR.MINOR and not PATCH so that bugfixes still
	# come automatically. If the version specified here is no longer the latest stable version,
	# then please feel free to submit a PR that adjusts it along with the potential clippy fixes.
	RUST_STABLE_VER: "1.79" # In quotes because otherwise (e.g.) 1.70 would be interpreted as 1.7
	# The purpose of checking with the minimum supported Rust toolchain is to detect its staleness.
	# If the compilation fails, then the version specified here needs to be bumped up to reality.
	# Be sure to also update the rust-version property in the workspace Cargo.toml file,
	# plus all the README.md files of the affected packages.
	RUST_MIN_VER: "1.65"
	# List of packages that will be checked with the minimum supported Rust version.
	# This should be limited to packages that are intended for publishing.
	RUST_MIN_VER_PKGS: "-p kurbo"
	# List of features that depend on the standard library and will be excluded from no_std checks.
	FEATURES_DEPENDING_ON_STD: "std,default,schemars"


	# Rationale
	#
	# We don't run clippy with --all-targets because then even --lib and --bins are compiled with
	# dev dependencies enabled, which does not match how they would be compiled by users.
	# A dev dependency might enable a feature that we need for a regular dependency,
	# and checking with --all-targets would not find our feature requirements lacking.
	# This problem still applies to cargo resolver version 2.
	# Thus we split all the targets into two steps, one with --lib --bins
	# and another with --tests --benches --examples.
	# Also, we can't give --lib --bins explicitly because then cargo will error on binary-only packages.
	# Luckily the default behavior of cargo with no explicit targets is the same but without the error.
	#
	# We use cargo-hack for a similar reason. Cargo's --workspace will do feature unification across
	# the whole workspace. While cargo-hack will instead check each workspace package separately.
	#
	# Using cargo-hack also allows us to more easily test the feature matrix of our packages.
	# We use --each-feature & --optional-deps which will run a separate check for every feature.
	#
	# The MSRV jobs run only cargo check because different clippy versions can disagree on goals and
	# running tests introduces dev dependencies which may require a higher MSRV than the bare package.
	#
	# For no_std checks we target x86_64-unknown-none, because this target doesn't support std
	# and as such will error out if our dependency tree accidentally tries to use std.
	# https://doc.rust-lang.org/stable/rustc/platform-support/x86_64-unknown-none.html
	#
	# We don't save caches in the merge-group cases, because those caches will never be re-used (apart
	# from the very rare cases where there are multiple PRs in the merge queue).
	# This is because GitHub doesn't share caches between merge queues and `main`.

	name: CI

	on:
	pull_request:
	merge_group:
	# We run on push, even though the commit is the same as when we ran in merge_group.
	# This allows the cache to be primed.
	# See https://github.com/orgs/community/discussions/66430
	push:
	branches:
	- main

	jobs:
	fmt:
	name: cargo fmt
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_STABLE_VER }}
	components: rustfmt

	- name: cargo fmt
	run: cargo fmt --all --check

	- name: install ripgrep
	run: \|
	sudo apt update
	sudo apt install ripgrep

	- name: check copyright headers
	run: bash .github/copyright.sh

	clippy-stable:
	name: cargo clippy
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [windows-latest, macos-latest, ubuntu-latest]
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_STABLE_VER }}
	targets: x86_64-unknown-none
	components: clippy

	- name: install cargo-hack
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-hack

	- name: cargo clippy (no_std)
	run: cargo hack clippy --workspace --locked --optional-deps --each-feature --features libm --exclude-features ${{ env.FEATURES_DEPENDING_ON_STD }} --target x86_64-unknown-none -- -D warnings

	- name: cargo clippy
	run: cargo hack clippy --workspace --locked --optional-deps --each-feature --features std -- -D warnings

	- name: cargo clippy (auxiliary)
	run: cargo hack clippy --workspace --locked --optional-deps --each-feature --features std --tests --benches --examples -- -D warnings

	clippy-stable-wasm:
	name: cargo clippy (wasm32)
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_STABLE_VER }}
	targets: wasm32-unknown-unknown
	components: clippy

	- name: install cargo-hack
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-hack

	- name: cargo clippy
	run: cargo hack clippy --workspace --locked --target wasm32-unknown-unknown --optional-deps --each-feature --features std -- -D warnings

	- name: cargo clippy (auxiliary)
	run: cargo hack clippy --workspace --locked --target wasm32-unknown-unknown --optional-deps --each-feature --features std --tests --benches --examples -- -D warnings

	test-stable:
	name: cargo test
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [windows-latest, macos-latest, ubuntu-latest]
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_STABLE_VER }}

	- name: cargo test
	run: cargo test --workspace --locked --all-features

	test-stable-wasm:
	name: cargo test (wasm32)
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install stable toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_STABLE_VER }}
	targets: wasm32-unknown-unknown

	# TODO: Find a way to make tests work. Until then the tests are merely compiled.
	- name: cargo test compile
	run: cargo test --workspace --locked --target wasm32-unknown-unknown --all-features --no-run

	check-msrv:
	name: cargo check (msrv)
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [windows-latest, macos-latest, ubuntu-latest]
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install msrv toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_MIN_VER }}
	targets: x86_64-unknown-none

	- name: install cargo-hack
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-hack

	- name: cargo check (no_std)
	run: cargo hack check ${{ env.RUST_MIN_VER_PKGS }} --locked --optional-deps --each-feature --features libm --exclude-features ${{ env.FEATURES_DEPENDING_ON_STD }} --target x86_64-unknown-none

	- name: cargo check
	run: cargo hack check ${{ env.RUST_MIN_VER_PKGS }} --locked --optional-deps --each-feature --features std

	check-msrv-wasm:
	name: cargo check (msrv) (wasm32)
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install msrv toolchain
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_MIN_VER }}
	targets: wasm32-unknown-unknown

	- name: install cargo-hack
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-hack

	- name: cargo check
	run: cargo hack check ${{ env.RUST_MIN_VER_PKGS }} --locked --target wasm32-unknown-unknown --optional-deps --each-feature --features std

	doc:
	name: cargo doc
	# NOTE: We don't have any platform specific docs in this workspace, so we only run on Ubuntu.
	# If we get per-platform docs (win/macos/linux/wasm32/..) then doc jobs should match that.
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: restore cache
	uses: Swatinem/rust-cache@v2
	with:
	save-if: ${{ github.event_name != 'merge_group' }}

	- name: install nightly toolchain
	uses: dtolnay/rust-toolchain@nightly

	# We test documentation using nightly to match docs.rs. This prevents potential breakages
	- name: cargo doc
	run: cargo doc --workspace --locked --all-features --no-deps --document-private-items -Zunstable-options -Zrustdoc-scrape-examples
	env:
	RUSTDOCFLAGS: '--cfg docsrs'

	# If this fails, consider changing your text or adding something to .typos.toml
	typos:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: check typos
	uses: crate-ci/[email protected]

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Fix `clippy::unnecessary_first_then_check` lint #656

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Fix `clippy::unnecessary_first_then_check` lint #656

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Fix clippy::unnecessary_first_then_check lint #656

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Workflow file for this run

Fix `clippy::unnecessary_first_then_check` lint #656