/
lint.swift
executable file
·518 lines (477 loc) · 20 KB
/
lint.swift
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#!/opt/homebrew/bin/swift-sh
import AnyLint // .
import Utility
import ShellOut // @JohnSundell
try Lint.logSummaryAndExit(arguments: CommandLine.arguments) {
// MARK: - Variables
let swiftSourceFiles: Regex = #"Sources/.*\.swift"#
let swiftTestFiles: Regex = #"Tests/.*\.swift"#
let readmeFile: Regex = #"README\.md"#
let changelogFile: Regex = #"^CHANGELOG\.md$"#
let projectName: String = "AnyLint"
// MARK: - Checks
// MARK: Changelog
try Lint.checkFilePaths(
checkInfo: "Changelog: Each project should have a CHANGELOG.md file, tracking the changes within a project over time.",
regex: changelogFile,
matchingExamples: ["CHANGELOG.md"],
nonMatchingExamples: ["CHANGELOG.markdown", "Changelog.md", "ChangeLog.md"],
violateIfNoMatchesFound: true
)
// MARK: ChangelogEntryTrailingWhitespaces
try Lint.checkFileContents(
checkInfo: "ChangelogEntryTrailingWhitespaces: The summary line of a Changelog entry should end with two whitespaces.",
regex: #"\n([-–] (?!None\.).*[^ ])( {0,1}| {3,})\n"#,
matchingExamples: ["\n- Fixed a bug.\n Issue:", "\n- Added a new option. (see [Link](#)) \nPR:"],
nonMatchingExamples: ["\n- Fixed a bug. \n Issue:", "\n- Added a new option. (see [Link](#)) \nPR:"],
includeFilters: [changelogFile],
autoCorrectReplacement: "\n$1 \n",
autoCorrectExamples: [
["before": "\n- Fixed a bug.\n Issue:", "after": "\n- Fixed a bug. \n Issue:"],
["before": "\n- Fixed a bug. \n Issue:", "after": "\n- Fixed a bug. \n Issue:"],
["before": "\n- Fixed a bug. \n Issue:", "after": "\n- Fixed a bug. \n Issue:"],
["before": "\n- Fixed a bug !\n Issue:", "after": "\n- Fixed a bug ! \n Issue:"],
["before": "\n- Fixed a bug ! \n Issue:", "after": "\n- Fixed a bug ! \n Issue:"],
["before": "\n- Fixed a bug ! \n Issue:", "after": "\n- Fixed a bug ! \n Issue:"],
]
)
// MARK: ChangelogEntryLeadingWhitespaces
try Lint.checkFileContents(
checkInfo: "ChangelogEntryLeadingWhitespaces: The links line of a Changelog entry should start with two whitespaces.",
regex: #"\n( {0,1}| {3,})(Tasks?:|Issues?:|PRs?:|Authors?:)"#,
matchingExamples: ["\n- Fixed a bug.\nIssue: [Link](#)", "\n- Fixed a bug. \nIssue: [Link](#)", "\n- Fixed a bug. \nIssue: [Link](#)"],
nonMatchingExamples: ["- Fixed a bug.\n Issue: [Link](#)"],
includeFilters: [changelogFile],
autoCorrectReplacement: "\n $2",
autoCorrectExamples: [
["before": "\n- Fixed a bug.\nIssue: [Link](#)", "after": "\n- Fixed a bug.\n Issue: [Link](#)"],
["before": "\n- Fixed a bug.\n Issue: [Link](#)", "after": "\n- Fixed a bug.\n Issue: [Link](#)"],
["before": "\n- Fixed a bug.\n Issue: [Link](#)", "after": "\n- Fixed a bug.\n Issue: [Link](#)"],
]
)
// MARK: EmptyMethodBody
try Lint.checkFileContents(
checkInfo: "EmptyMethodBody: Don't use whitespace or newlines for the body of empty methods.",
regex: ["declaration": #"(init|func [^\(\s]+)\([^{}]*\)"#, "spacing": #"\s*"#, "body": #"\{\s+\}"#],
matchingExamples: [
"init() { }",
"init() {\n\n}",
"init(\n x: Int,\n y: Int\n) { }",
"func foo2bar() { }",
"func foo2bar(x: Int, y: Int) { }",
"func foo2bar(\n x: Int,\n y: Int\n) {\n \n}",
],
nonMatchingExamples: ["init() { /* comment */ }", "init() {}", "func foo2bar() {}", "func foo2bar(x: Int, y: Int) {}"],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: "$declaration {}",
autoCorrectExamples: [
["before": "init() { }", "after": "init() {}"],
["before": "init(x: Int, y: Int) { }", "after": "init(x: Int, y: Int) {}"],
["before": "init()\n{\n \n}", "after": "init() {}"],
["before": "init(\n x: Int,\n y: Int\n) {\n \n}", "after": "init(\n x: Int,\n y: Int\n) {}"],
["before": "func foo2bar() { }", "after": "func foo2bar() {}"],
["before": "func foo2bar(x: Int, y: Int) { }", "after": "func foo2bar(x: Int, y: Int) {}"],
["before": "func foo2bar()\n{\n \n}", "after": "func foo2bar() {}"],
["before": "func foo2bar(\n x: Int,\n y: Int\n) {\n \n}", "after": "func foo2bar(\n x: Int,\n y: Int\n) {}"],
]
)
// MARK: EmptyTodo
try Lint.checkFileContents(
checkInfo: "EmptyTodo: `// TODO:` comments should not be empty.",
regex: #"// TODO: ?(\[[\d\-_a-z]+\])? *\n"#,
matchingExamples: ["// TODO:\n", "// TODO: [2020-03-19]\n", "// TODO: [cg_2020-03-19] \n"],
nonMatchingExamples: ["// TODO: refactor", "// TODO: not yet implemented", "// TODO: [cg_2020-03-19] not yet implemented"],
includeFilters: [swiftSourceFiles, swiftTestFiles]
)
// MARK: EmptyType
try Lint.checkFileContents(
checkInfo: "EmptyType: Don't keep empty types in code without commenting inside why they are needed.",
regex: #"(class|protocol|struct|enum) [^\{]+\{\s*\}"#,
matchingExamples: ["class Foo {}", "enum Constants {\n \n}", "struct MyViewModel(x: Int, y: Int, closure: () -> Void) {}"],
nonMatchingExamples: ["class Foo { /* TODO: not yet implemented */ }", "func foo() {}", "init() {}", "enum Bar { case x, y }"],
includeFilters: [swiftSourceFiles, swiftTestFiles]
)
// MARK: GuardMultiline2
try Lint.checkFileContents(
checkInfo: "GuardMultiline2: Close a multiline guard via `else {` on a new line indented like the opening `guard`.",
regex: [
"newline": #"\n"#,
"guardIndent": #" *"#,
"guard": #"guard *"#,
"line1": #"[^\n]+,"#,
"line1Indent": #"\n *"#,
"line2": #"[^\n]*\S"#,
"else": #"\s*else\s*\{\s*"#
],
matchingExamples: [
"""
guard let x1 = y1?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
"""
],
nonMatchingExamples: [
"""
guard
let x1 = y1?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
""",
"""
guard let url = URL(string: self, relativeTo: fileManager.currentDirectoryUrl) else {
return 2
}
""",
],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: """
$guardIndentguard
$guardIndent $line1
$guardIndent $line2
$guardIndentelse {
$guardIndent\u{0020}\u{0020}\u{0020}\u{0020}
""",
autoCorrectExamples: [
[
"before": """
let x = 15
guard let x1 = y1?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
""",
"after": """
let x = 15
guard
let x1 = y1?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
"""
],
]
)
// MARK: GuardMultiline3
try Lint.checkFileContents(
checkInfo: "GuardMultiline3: Close a multiline guard via `else {` on a new line indented like the opening `guard`.",
regex: [
"newline": #"\n"#,
"guardIndent": #" *"#,
"guard": #"guard *"#,
"line1": #"[^\n]+,"#,
"line1Indent": #"\n *"#,
"line2": #"[^\n]+,"#,
"line2Indent": #"\n *"#,
"line3": #"[^\n]*\S"#,
"else": #"\s*else\s*\{\s*"#
],
matchingExamples: [
"""
guard let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
"""
],
nonMatchingExamples: [
"""
guard
let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
""",
"""
guard let url = URL(x: 1, y: 2, relativeTo: fileManager.currentDirectoryUrl) else {
return 2
}
""",
],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: """
$guardIndentguard
$guardIndent $line1
$guardIndent $line2
$guardIndent $line3
$guardIndentelse {
$guardIndent\u{0020}\u{0020}\u{0020}\u{0020}
""",
autoCorrectExamples: [
[
"before": """
let x = 15
guard let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
""",
"after": """
let x = 15
guard
let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
"""
],
]
)
// MARK: GuardMultiline4
try Lint.checkFileContents(
checkInfo: "GuardMultiline4: Close a multiline guard via `else {` on a new line indented like the opening `guard`.",
regex: [
"newline": #"\n"#,
"guardIndent": #" *"#,
"guard": #"guard *"#,
"line1": #"[^\n]+,"#,
"line1Indent": #"\n *"#,
"line2": #"[^\n]+,"#,
"line2Indent": #"\n *"#,
"line3": #"[^\n]+,"#,
"line3Indent": #"\n *"#,
"line4": #"[^\n]*\S"#,
"else": #"\s*else\s*\{\s*"#
],
matchingExamples: [
"""
guard let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
"""
],
nonMatchingExamples: [
"""
guard
let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
""",
"""
guard let url = URL(x: 1, y: 2, z: 3, relativeTo: fileManager.currentDirectoryUrl) else {
return 2
}
""",
],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: """
$guardIndentguard
$guardIndent $line1
$guardIndent $line2
$guardIndent $line3
$guardIndent $line4
$guardIndentelse {
$guardIndent\u{0020}\u{0020}\u{0020}\u{0020}
""",
autoCorrectExamples: [
[
"before": """
let x = 15
guard let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
""",
"after": """
let x = 15
guard
let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
"""
],
]
)
// MARK: GuardMultilineN
try Lint.checkFileContents(
checkInfo: "GuardMultilineN: Close a multiline guard via `else {` on a new line indented like the opening `guard`.",
regex: #"\n *guard *([^\n]+,\n){4,}[^\n]*\S\s*else\s*\{\s*"#,
matchingExamples: [
"""
guard let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let x4 = y4?.imagePath,
let x5 = y5?.imagePath,
let z = EnumType(rawValue: 15) else {
return 2
}
"""
],
nonMatchingExamples: [
"""
guard
let x1 = y1?.imagePath,
let x2 = y2?.imagePath,
let x3 = y3?.imagePath,
let x4 = y4?.imagePath,
let x5 = y5?.imagePath,
let z = EnumType(rawValue: 15)
else {
return 2
}
""",
"""
guard let url = URL(x1: 1, x2: 2, x3: 3, x4: 4, x5: 5, relativeTo: fileManager.currentDirectoryUrl) else {
return 2
}
""",
],
includeFilters: [swiftSourceFiles, swiftTestFiles]
)
// MARK: IfAsGuard
try Lint.checkFileContents(
checkInfo: "IfAsGuard: Don't use an if statement to just return – use guard for such cases instead.",
regex: #" +if [^\{]+\{\s*return\s*[^\}]*\}(?! *else)"#,
matchingExamples: [" if x == 5 { return }", " if x == 5 {\n return nil\n}", " if x == 5 { return 500 }", " if x == 5 { return do(x: 500, y: 200) }"],
nonMatchingExamples: [" if x == 5 {\n let y = 200\n return y\n}", " if x == 5 { someMethod(x: 500, y: 200) }", " if x == 500 { return } else {"],
includeFilters: [swiftSourceFiles, swiftTestFiles]
)
// MARK: LateForceUnwrapping3
try Lint.checkFileContents(
checkInfo: "LateForceUnwrapping3: Don't use ? first to force unwrap later – directly unwrap within the parantheses.",
regex: [
"openingBrace": #"\("#,
"callPart1": #"[^\s\?\.]+"#,
"separator1": #"\?\."#,
"callPart2": #"[^\s\?\.]+"#,
"separator2": #"\?\."#,
"callPart3": #"[^\s\?\.]+"#,
"separator3": #"\?\."#,
"callPart4": #"[^\s\?\.]+"#,
"closingBraceUnwrap": #"\)!"#,
],
matchingExamples: ["let x = (viewModel?.user?.profile?.imagePath)!\n"],
nonMatchingExamples: ["call(x: (viewModel?.username)!)", "let x = viewModel!.user!.profile!.imagePath\n"],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: "$callPart1!.$callPart2!.$callPart3!.$callPart4",
autoCorrectExamples: [
["before": "let x = (viewModel?.user?.profile?.imagePath)!\n", "after": "let x = viewModel!.user!.profile!.imagePath\n"],
]
)
// MARK: LateForceUnwrapping2
try Lint.checkFileContents(
checkInfo: "LateForceUnwrapping2: Don't use ? first to force unwrap later – directly unwrap within the parantheses.",
regex: [
"openingBrace": #"\("#,
"callPart1": #"[^\s\?\.]+"#,
"separator1": #"\?\."#,
"callPart2": #"[^\s\?\.]+"#,
"separator2": #"\?\."#,
"callPart3": #"[^\s\?\.]+"#,
"closingBraceUnwrap": #"\)!"#,
],
matchingExamples: ["call(x: (viewModel?.profile?.username)!)"],
nonMatchingExamples: ["let x = (viewModel?.user?.profile?.imagePath)!\n", "let x = viewModel!.profile!.imagePath\n"],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: "$callPart1!.$callPart2!.$callPart3",
autoCorrectExamples: [
["before": "let x = (viewModel?.profile?.imagePath)!\n", "after": "let x = viewModel!.profile!.imagePath\n"],
]
)
// MARK: LateForceUnwrapping1
try Lint.checkFileContents(
checkInfo: "LateForceUnwrapping1: Don't use ? first to force unwrap later – directly unwrap within the parantheses.",
regex: [
"openingBrace": #"\("#,
"callPart1": #"[^\s\?\.]+"#,
"separator1": #"\?\."#,
"callPart2": #"[^\s\?\.]+"#,
"closingBraceUnwrap": #"\)!"#,
],
matchingExamples: ["call(x: (viewModel?.username)!)"],
nonMatchingExamples: ["call(x: (viewModel?.profile?.username)!)", "call(x: viewModel!.username)"],
includeFilters: [swiftSourceFiles, swiftTestFiles],
autoCorrectReplacement: "$callPart1!.$callPart2",
autoCorrectExamples: [
["before": "call(x: (viewModel?.username)!)", "after": "call(x: viewModel!.username)"],
]
)
// MARK: LinuxMainUpToDate
try Lint.customCheck(checkInfo: "LinuxMainUpToDate: The tests in Tests/LinuxMain.swift should be up-to-date.") { checkInfo in
var violations: [Violation] = []
let linuxMainFilePath = "Tests/LinuxMain.swift"
let linuxMainContentsBeforeRegeneration = try! String(contentsOfFile: linuxMainFilePath)
let sourceryDirPath = ".sourcery"
let testsDirPath = "Tests/\(projectName)Tests"
let stencilFilePath = "\(sourceryDirPath)/LinuxMain.stencil"
let generatedLinuxMainFilePath = "\(sourceryDirPath)/LinuxMain.generated.swift"
let sourceryInstallPath = try? shellOut(to: "which", arguments: ["sourcery"])
guard sourceryInstallPath != nil else {
log.message(
"Skipped custom check \(checkInfo) – requires Sourcery to be installed, download from: https://github.com/krzysztofzablocki/Sourcery",
level: .warning
)
return []
}
try! shellOut(to: "sourcery", arguments: ["--sources", testsDirPath, "--templates", stencilFilePath, "--output", sourceryDirPath])
let linuxMainContentsAfterRegeneration = try! String(contentsOfFile: generatedLinuxMainFilePath)
// move generated file to LinuxMain path to update its contents
try! shellOut(to: "mv", arguments: [generatedLinuxMainFilePath, linuxMainFilePath])
if linuxMainContentsBeforeRegeneration != linuxMainContentsAfterRegeneration {
violations.append(
Violation(
checkInfo: checkInfo,
filePath: linuxMainFilePath,
appliedAutoCorrection: AutoCorrection(
before: linuxMainContentsBeforeRegeneration,
after: linuxMainContentsAfterRegeneration
)
)
)
}
return violations
}
// MARK: Logger
try Lint.checkFileContents(
checkInfo: "Logger: Don't use `print` – use `log.message` instead.",
regex: #"print\([^\n]+\)"#,
matchingExamples: [#"print("Hellow World!")"#, #"print(5)"#, #"print(\n "hi"\n)"#],
nonMatchingExamples: [#"log.message("Hello world!")"#],
includeFilters: [swiftSourceFiles, swiftTestFiles],
excludeFilters: [#"Sources/.*/Logger\.swift"#]
)
// MARK: Readme
try Lint.checkFilePaths(
checkInfo: "Readme: Each project should have a README.md file, explaining how to use or contribute to the project.",
regex: #"^README\.md$"#,
matchingExamples: ["README.md"],
nonMatchingExamples: ["README.markdown", "Readme.md", "ReadMe.md"],
violateIfNoMatchesFound: true
)
// MARK: ReadmePath
try Lint.checkFilePaths(
checkInfo: "ReadmePath: The README file should be named exactly `README.md`.",
regex: #"^(.*/)?([Rr][Ee][Aa][Dd][Mm][Ee]\.markdown|readme\.md|Readme\.md|ReadMe\.md)$"#,
matchingExamples: ["README.markdown", "readme.md", "ReadMe.md"],
nonMatchingExamples: ["README.md", "CHANGELOG.md", "CONTRIBUTING.md", "api/help.md"],
autoCorrectReplacement: "$1README.md",
autoCorrectExamples: [
["before": "api/readme.md", "after": "api/README.md"],
["before": "ReadMe.md", "after": "README.md"],
["before": "README.markdown", "after": "README.md"],
]
)
}