47 lines
1.2 KiB
Swift
47 lines
1.2 KiB
Swift
import Foundation
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import SwiftSyntax
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// workaround for https://bugs.swift.org/browse/SR-10121 so we can use `Self` in a closure
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protocol SwiftLintSyntaxVisitor: SyntaxVisitor {}
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extension SyntaxVisitor: SwiftLintSyntaxVisitor {}
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extension SwiftLintSyntaxVisitor {
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func walk<T>(tree: SourceFileSyntax, handler: (Self) -> T) -> T {
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#if DEBUG
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// workaround for stack overflow when running in debug
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// https://bugs.swift.org/browse/SR-11170
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let lock = NSLock()
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let work = DispatchWorkItem {
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lock.lock()
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self.walk(tree)
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lock.unlock()
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}
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let thread = Thread {
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work.perform()
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}
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thread.stackSize = 8 << 20 // 8 MB.
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thread.start()
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work.wait()
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lock.lock()
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defer {
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lock.unlock()
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}
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return handler(self)
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#else
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walk(tree)
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return handler(self)
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#endif
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}
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func walk<T>(file: SwiftLintFile, handler: (Self) -> [T]) -> [T] {
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guard let syntaxTree = file.syntaxTree else {
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return []
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}
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return walk(tree: syntaxTree, handler: handler)
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}
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}
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