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NoExtensionAccessModifierRule.swift
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NoExtensionAccessModifierRule.swift
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//
// NoExtensionAccessModifier.swift
// SwiftLint
//
// Created by Jose Cheyo Jimenez on 04/23/17.
// Copyright © 2017 Realm. All rights reserved.
//
import Foundation
import SourceKittenFramework
public struct NoExtensionAccessModifierRule: ASTRule, OptInRule, ConfigurationProviderRule {
public var configuration = SeverityConfiguration(.error)
public init() {}
public static let description = RuleDescription(
identifier: "no_extension_access_modifier",
name: "No Extension Access Modifier",
description: "Prefer not to use extension access modifiers",
kind: .idiomatic,
nonTriggeringExamples: [
"extension String {}",
"\n\n extension String {}"
],
triggeringExamples: [
"↓private extension String {}",
"↓public \n extension String {}",
"↓open extension String {}",
"↓internal extension String {}",
"↓fileprivate extension String {}"
]
)
public func validate(file: File, kind: SwiftDeclarationKind,
dictionary: [String : SourceKitRepresentable]) -> [StyleViolation] {
guard kind == .extension, let offset = dictionary.offset else {
return []
}
let syntaxTokens = file.syntaxMap.tokens
let parts = syntaxTokens.prefix(while: { offset > $0.offset })
guard let aclToken = parts.last, file.isACL(token: aclToken) else {
return []
}
return [
StyleViolation(ruleDescription: type(of: self).description,
severity: configuration.severity,
location: Location(file: file, byteOffset: aclToken.offset))
]
}
}