68 lines
1.9 KiB
Swift
68 lines
1.9 KiB
Swift
import SourceKittenFramework
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public struct FatalErrorMessageRule: ASTRule, ConfigurationProviderRule, OptInRule, AutomaticTestableRule {
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public var configuration = SeverityConfiguration(.warning)
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public init() {}
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public static let description = RuleDescription(
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identifier: "fatal_error_message",
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name: "Fatal Error Message",
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description: "A fatalError call should have a message.",
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kind: .idiomatic,
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nonTriggeringExamples: [
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"""
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func foo() {
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fatalError("Foo")
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}
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""",
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"""
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func foo() {
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fatalError(x)
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}
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"""
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],
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triggeringExamples: [
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"""
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func foo() {
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↓fatalError("")
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}
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""",
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"""
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func foo() {
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↓fatalError()
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}
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"""
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]
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)
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public func validate(file: SwiftLintFile, kind: SwiftExpressionKind,
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dictionary: SourceKittenDictionary) -> [StyleViolation] {
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guard kind == .call,
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let offset = dictionary.offset,
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dictionary.name == "fatalError",
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hasEmptyBody(dictionary: dictionary, file: file) else {
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return []
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}
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return [
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StyleViolation(ruleDescription: type(of: self).description,
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severity: configuration.severity,
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location: Location(file: file, byteOffset: offset))
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]
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}
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private func hasEmptyBody(dictionary: SourceKittenDictionary, file: SwiftLintFile) -> Bool {
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guard let bodyRange = dictionary.bodyByteRange else {
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return false
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}
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if bodyRange.length == 0 {
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return true
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}
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let body = file.stringView.substringWithByteRange(bodyRange)
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return body == "\"\""
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}
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}
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