0.52.1: Crisp Clear Pleats

Bug Fixes

• Let the validates_start_with_lowercase option in name configurations expect a severity (warning or error). Not setting it disables the check. Boolean values are now deprecated. A true value enables the check as an error for the time being to keep the previous behavior.
  SimplyDanny #2180

• Fixed a false positive in unhandled_throwing_task.
  kylebshr #4984

• Fix Bazel release tarball for compiling on macOS.
  JP Simard #4985

0.52.0: Crisp Clear Pleats

Breaking

• The attributes rule now expects attributes with arguments to be placed on their own line above the declaration they are supposed to influence. This applies to attributes with any kinds of arguments including single key path arguments which were previously handled in a different way. This behavior can be turned off by setting attributes_with_arguments_always_on_line_above to `false.
  SimplyDanny #4843

• The internal module structure for SwiftLint has changed to split the monolithic SwiftLintFramework into new SwiftLintCore for core linter infrastructure, SwiftLintBuiltInRules for built-in rules and SwiftLintExtraRules to add your own native rules to SwiftLint.
  JP Simard

Experimental

• None.

Enhancements

• Add new superfluous_else rule that triggers on if-statements when an attached else-block can be removed, because all branches of the previous if-block(s) would certainly exit the current scope already.
  SimplyDanny

• Add sorted_enum_cases rule which warns when enum cases are not sorted.
  kimdv

• Add new redundant_self_in_closure rule that triggers in closures on explicitly used self when it's actually not needed due to:

  • Strongly captured self ({ [self] in ... })
  • Closure used in a struct declaration (self can always be omitted)
  • Anonymous closures that are directly called ({ ... }()) as they are definitly not escaping
  • Weakly captured self with explicit unwrapping

  SimplyDanny #59

• Extend xct_specific_matcher rule to check for boolean asserts on (un)equal comparisons. The rule can be configured with the matchers that should trigger rule violations. By default, all matchers trigger, but that can be limited to just one-argument-asserts or two-argument-asserts.
  SimplyDanny JP Simard #3726

• Trigger prefer_self_in_static_references rule on more type references.
  SimplyDanny

• Adds a new reporters command, to improve discoverability of reporters.
  Martin Redington #4819

• Adds test_parent_classes option to the no_magic_numbers rule. Violations within test classes will now be ignored by default.
  Martin Redington #4896

• Stop enforcing calls to super from the override functions setUp(), tearDown(), setUpWithError(), and tearDownWithError() in XCTestCase subclasses.
  AndrewDMontgomery #4875

• Prepend warning: to error messages so that they show in Xcode.
  whiteio #4923

• The attributes rule received a new boolean option attributes_with_arguments_always_on_line_above which is true by default. Setting it to false ensures that attributes with arguments like @Persisted(primaryKey: true) don't violate the rule if they are on the same line with the variable declaration.
  SimplyDanny #4843

• Add new unhandled_throwing_task rule that triggers when a Task with an implicit error type has unhandled trys or errors thrown inside its body. This results in errors being silently discarded, which may be unexpected. See this forum thread for more details: https://forums.swift.org/t/56066
  kylebshr

Bug Fixes

• Fix lower_acl_than_parent rule rewriter by preserving leading whitespace.
  SimplyDanny #4860

• Ignore block comments in let_var_whitespace rule.
  SimplyDanny #4871

• Fix false positives in indentation_width rule.
  Sven Münnich

• Do not trigger reduce_boolean on reduce methods with a first named argument that is different from into.
  SimplyDanny #4894

• Work around dyld warning about duplicate SwiftSyntax classes.
  keith #4782

• Improve lint times of SwiftLintPlugin by moving the excludedPaths(fileManager:) operation out of the linting iterations.
  andyyhope #4844

Using Bazel

With bzlmod:

bazel_dep(name = "swiftlint", version = "0.52.1", repo_name = "SwiftLint")

Without bzlmod, put this in your WORKSPACE:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "build_bazel_rules_apple",
    sha256 = "9e26307516c4d5f2ad4aee90ac01eb8cd31f9b8d6ea93619fc64b3cbc81b0944",
    url = "https://github.com/bazelbuild/rules_apple/releases/download/2.2.0/rules_apple.2.2.0.tar.gz",
)

load(
    "@build_bazel_rules_apple//apple:repositories.bzl",
    "apple_rules_dependencies",
)

apple_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:repositories.bzl",
    "swift_rules_dependencies",
)

swift_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:extras.bzl",
    "swift_rules_extra_dependencies",
)

swift_rules_extra_dependencies()

http_archive(
    name = "SwiftLint",
    sha256 = "22973f004310a1e5611ae6d08077e907be4883929d10c049cc0b9846463b3d9a",
    url = "https://github.com/realm/SwiftLint/releases/download/0.52.1/bazel.tar.gz",
)

load("@SwiftLint//bazel:repos.bzl", "swiftlint_repos")

swiftlint_repos()

load("@SwiftLint//bazel:deps.bzl", "swiftlint_deps")

swiftlint_deps()

Then you can run SwiftLint in the current directory with this command:

bazel run @SwiftLint//:swiftlint -- --help