35 lines
1.1 KiB
Swift
35 lines
1.1 KiB
Swift
import SwiftSyntax
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struct ForceCastRule: ConfigurationProviderRule, SwiftSyntaxRule {
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var configuration = SeverityConfiguration(.error)
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static let description = RuleDescription(
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identifier: "force_cast",
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name: "Force Cast",
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description: "Force casts should be avoided",
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kind: .idiomatic,
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nonTriggeringExamples: [
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Example("NSNumber() as? Int\n")
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],
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triggeringExamples: [ Example("NSNumber() ↓as! Int\n") ]
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)
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func makeVisitor(file: SwiftLintFile) -> ViolationsSyntaxVisitor {
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ForceCastRuleVisitor(viewMode: .sourceAccurate)
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}
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}
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private final class ForceCastRuleVisitor: ViolationsSyntaxVisitor {
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override func visitPost(_ node: AsExprSyntax) {
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if node.questionOrExclamationMark?.tokenKind == .exclamationMark {
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violations.append(node.asTok.positionAfterSkippingLeadingTrivia)
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}
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}
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override func visitPost(_ node: UnresolvedAsExprSyntax) {
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if node.questionOrExclamationMark?.tokenKind == .exclamationMark {
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violations.append(node.asTok.positionAfterSkippingLeadingTrivia)
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}
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}
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}
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