SwiftLint/Source/SwiftLintCore/Rules/CustomRules.swift

96 lines
3.4 KiB
Swift

import Foundation
// MARK: - CustomRulesConfiguration
struct CustomRulesConfiguration: RuleConfiguration, Equatable, CacheDescriptionProvider {
var consoleDescription: String { return "user-defined" }
var cacheDescription: String {
return customRuleConfigurations
.sorted { $0.identifier < $1.identifier }
.map { $0.cacheDescription }
.joined(separator: "\n")
}
var customRuleConfigurations = [RegexConfiguration]()
mutating func apply(configuration: Any) throws {
guard let configurationDict = configuration as? [String: Any] else {
throw Issue.unknownConfiguration
}
for (key, value) in configurationDict {
var ruleConfiguration = RegexConfiguration(identifier: key)
do {
try ruleConfiguration.apply(configuration: value)
} catch {
queuedPrintError("warning: Invalid configuration for custom rule '\(key)'.")
continue
}
customRuleConfigurations.append(ruleConfiguration)
}
}
}
// MARK: - CustomRules
struct CustomRules: Rule, ConfigurationProviderRule, CacheDescriptionProvider {
var cacheDescription: String {
return configuration.cacheDescription
}
static let description = RuleDescription(
identifier: "custom_rules",
name: "Custom Rules",
description: """
Create custom rules by providing a regex string. Optionally specify what syntax kinds to match against, \
the severity level, and what message to display.
""",
kind: .style)
var configuration = CustomRulesConfiguration()
func validate(file: SwiftLintFile) -> [StyleViolation] {
var configurations = configuration.customRuleConfigurations
guard configurations.isNotEmpty else {
return []
}
if let path = file.path {
configurations = configurations.filter { config in
config.shouldValidate(filePath: path)
}
}
return configurations.flatMap { configuration -> [StyleViolation] in
let start = Date()
defer {
CustomRuleTimer.shared.register(time: -start.timeIntervalSinceNow, forRuleID: configuration.identifier)
}
let pattern = configuration.regex.pattern
let captureGroup = configuration.captureGroup
let excludingKinds = configuration.excludedMatchKinds
return file.match(pattern: pattern, excludingSyntaxKinds: excludingKinds, captureGroup: captureGroup).map({
StyleViolation(ruleDescription: configuration.description,
severity: configuration.severity,
location: Location(file: file, characterOffset: $0.location),
reason: configuration.message)
}).filter { violation in
guard let region = file.regions().first(where: { $0.contains(violation.location) }) else {
return true
}
return !region.isRuleDisabled(customRuleIdentifier: configuration.identifier)
}
}
}
}
private extension Region {
func isRuleDisabled(customRuleIdentifier: String) -> Bool {
return disabledRuleIdentifiers.contains(RuleIdentifier(customRuleIdentifier))
}
}