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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
/// A canonicalized representation of an identifier that strips away backticks.
public struct Identifier: Equatable, Hashable, Sendable {
/// The sanitized `text` of a token.
public var name: String {
String(syntaxText: raw.name)
}
@_spi(RawSyntax)
public let raw: RawIdentifier
private let arena: SyntaxArenaRef
public init?(_ token: TokenSyntax) {
guard case .identifier = token.tokenKind else {
return nil
}
self.raw = RawIdentifier(token.tokenView)
self.arena = token.tokenView.raw.arenaReference
}
}
@_spi(RawSyntax)
public struct RawIdentifier: Equatable, Hashable, Sendable {
public let name: SyntaxText
@_spi(RawSyntax)
fileprivate init(_ raw: RawSyntaxTokenView) {
let backtick = SyntaxText("`")
if raw.rawText.count > 2 && raw.rawText.hasPrefix(backtick) && raw.rawText.hasSuffix(backtick) {
let startIndex = raw.rawText.index(after: raw.rawText.startIndex)
let endIndex = raw.rawText.index(before: raw.rawText.endIndex)
self.name = SyntaxText(rebasing: raw.rawText[startIndex..<endIndex])
} else {
self.name = raw.rawText
}
}
}
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