A translation (line-by-line in many cases) of Swift's Demangler.cpp into Swift.

I usually place my code under an ISC-style license but since this project is derived from the Swift project, it is covered by that project's Apache License 2.0 with runtime library exception.

Parse a String containing a mangled Swift symbol with the parseMangledSwiftSymbol function:

let swiftSymbol = try parseMangledSwiftSymbol(input)

Print the symbol to a string with description (to get the .default printing options) or use the print(using:) function, e.g.:

let result = swiftSymbol.print(using:
   SymbolPrintOptions.default.union(.synthesizeSugarOnTypes))

Read more about this project in the associated article on Cocoa with Love: Comparing Swift to C++ for parsing