54 lines
1.9 KiB
Swift
54 lines
1.9 KiB
Swift
import SwiftSyntax
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struct DynamicInlineRule: SwiftSyntaxRule, ConfigurationProviderRule {
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var configuration = SeverityConfiguration(.error)
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init() {}
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static let description = RuleDescription(
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identifier: "dynamic_inline",
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name: "Dynamic Inline",
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description: "Avoid using 'dynamic' and '@inline(__always)' together",
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kind: .lint,
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nonTriggeringExamples: [
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Example("class C {\ndynamic func f() {}}"),
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Example("class C {\n@inline(__always) func f() {}}"),
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Example("class C {\n@inline(never) dynamic func f() {}}")
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],
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triggeringExamples: [
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Example("class C {\n@inline(__always) dynamic ↓func f() {}\n}"),
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Example("class C {\n@inline(__always) public dynamic ↓func f() {}\n}"),
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Example("class C {\n@inline(__always) dynamic internal ↓func f() {}\n}"),
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Example("class C {\n@inline(__always)\ndynamic ↓func f() {}\n}"),
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Example("class C {\n@inline(__always)\ndynamic\n↓func f() {}\n}")
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]
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)
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func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
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Visitor(viewMode: .sourceAccurate)
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}
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}
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private extension DynamicInlineRule {
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private final class Visitor: ViolationsSyntaxVisitor {
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override func visitPost(_ node: FunctionDeclSyntax) {
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guard let modifiers = node.modifiers,
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let attributes = node.attributes,
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modifiers.contains(where: { $0.name.text == "dynamic" }),
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attributes.contains(where: { $0.as(AttributeSyntax.self)?.isInlineAlways == true })
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else {
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return
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}
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violations.append(node.funcKeyword.positionAfterSkippingLeadingTrivia)
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}
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}
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}
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private extension AttributeSyntax {
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var isInlineAlways: Bool {
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attributeName.text == "inline" &&
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argument?.firstToken?.tokenKind == .identifier("__always")
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}
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}
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