Macro

The macro implementation is here:

https://github.com/bennn/syntax-parse-example/pull/26

The purpose of the macro is to allow dot notation for field and method acccess for objects.
The macro also supports properties for non-object types.
The underscore notation can be used for indexing of vectors and strings.

Example

https://github.com/bennn/syntax-parse-example/blob/8549f617cdeafe136cea7a285eb03b7e00a3ab20/dot-underscore/test-dot-underscore.rkt

Before and After

Licence

https://github.com/racket/racket/blob/master/racket/src/LICENSE-MIT.txt
http://creativecommons.org/licenses/by/4.0/