Use SwiftOperators to 'fold' the syntax tree and rebuild the tree structure according to operator precedence. This option is enabled by default.
Show Missing Tokens
The Swift parser often automatically inserts tokens that are not present in the source code to recover from syntax errors. This option makes the missing tokens automatically inserted by the parser visible.
There are a few different ways to import code into the code editor:
Drop a file onto the editor
Append a GitHub gist ID to the URL (e.g. swift-ast-explorer.com/<gist_id_goes_here>)