Align the latest SwiftSyntax changes

Author: kishikawakatsumi

Package.resolved

@@ -0,0 +1,31 @@
+import Foundation
+import SwiftSyntax
+import SwiftOperators
+import SwiftParser
+
+struct SyntaxParser {
+  static func parse(code: String, options: [String] = []) throws -> SyntaxResponse {
+    let sourceFile = Parser.parse(source: code)
+
+    let syntax: Syntax
+    if options.contains("fold") {
+      syntax = OperatorTable.standardOperators.foldAll(sourceFile, errorHandler: { _ in })
+    } else {
+      syntax = Syntax(sourceFile)
+    }
+
+    let visitor = TokenVisitor(
+      locationConverter: SourceLocationConverter(fileName: "", tree: sourceFile),
+      showMissingTokens: options.contains("showmissing")
+    )
+    _ = visitor.rewrite(syntax)
+
+    let html = "\(visitor.list.joined())"
+
+    let tree = visitor.tree
+    let encoder = JSONEncoder()
+    let json = String(decoding: try encoder.encode(tree), as: UTF8.self)
+
+    return SyntaxResponse(syntaxHTML: html, syntaxJSON: json, swiftVersion: "5.9")
+  }
+}