This is a scala library for writing custom string interpolation implementations via parser combinators.
The parser combinators, in addition to parser leaves that match on parts of a string, such as charWhere,
include leaves that match on the 'hole' or 'arg' parts of interpolated strings.
As such, this can be used to create compile-time checked string interpolators that accept holes;
contrast literally, which cannot accept holes,
or using s to turn the StringContext into a string then parsing the built string, which cannot be checked at compile-time.
The parser can do this while still being easier and faster to create than a hand-rolled parser.
The maven coordinates are "name.rayrobdod" %% "string-context-parser-combinator" % "<version>"
The library itself is contained within the Base/ project. The other projects are sample uses of the library.