Remove backticks when creating Identifier

Added a new Identifier type which contains a name property

This name property contains a sanitized version of the TokenSyntax's
text property which for now only consists of trimming backticks

Author: adammcarter

Sources/SwiftSyntax/Identifier.swift

@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+import Foundation
+
+/// An abstraction for sanitized values on a token.
+public struct Identifier {
+  /// The sanitized `text` of a token.
+  public let name: String
+
+  public init(_ token: TokenSyntax) {
+    self.name = sanitizing(token.text)
+  }
+}
+
+private func sanitizing(_ name: String) -> String {
+  guard name.contains("`") else {
+    return name
+  }
+
+  return name.trimmingCharacters(in: CharacterSet(charactersIn: "`"))
+}

Tests/SwiftSyntaxTest/IdentifierTests.swift

@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+import SwiftSyntax
+import XCTest
+
+class IdentifierTests: XCTestCase {
+  public func testInit() {
+    let basicToken = TokenSyntax(stringLiteral: "sometoken")
+    XCTAssertEqual(Identifier(basicToken).name, "sometoken")
+
+    let backtickedToken = TokenSyntax(stringLiteral: "`backtickedtoken`")
+    XCTAssertEqual(Identifier(backtickedToken).name, "backtickedtoken")
+  }
+}