Variant: Parser Combinators (PC), Abstract Syntax Tree (AST)
Source: cfg2kv.js, package.json
To get rid of the separation between scanner and parser, one can use scannerless parsing. One way is the use Haskel Parsec like Parser Combinators like Arcsecond, which also provide Regular Expression based parsers.
RECOMMENDATION: Acceptable for simple formal language structures and limited situations, but usually not worth the effort as it still causes noticable boilerplate code.
| Pros | Cons |
|---|---|
| no separation of scanner and parser | external dependencies |
| everything is plain host language | hard to implement error reporting |
| noticable boilerplate code