instacheck.grammar — kanaka/instacheck 0.6.1

filter-alts clj

(filter-alts weights)

Remove paths for weights that are not alternations (or ordered alternations). Only alternations (igen/freq) are currently affected by the weights so remove everything else.

grammar-seq clj

(grammar-seq grammar)

Return a map of all grammar paths to grammar nodes.

load-grammar clj

(load-grammar ebnf)

Takes an EBNF grammar test string and returns an instacheck grammar (via parser->grammar).

parse-grammar-comments clj

(parse-grammar-comments grammar & [tx])

Takes a grammar, reads edn maps from comments in the grammar and returns a map of grammar paths to parsed comment data. Multiple comments with edn maps at the same path will be merged into a single map. If the optional tx function is provided it will be applied to the merge maps values.

This requires a patched version of instaparse to retain the comments in the grammar on :comments keys.

parser->grammar clj

(parser->grammar parser)

Takes a instaparse parser and returns an instacheck grammar: the :grammar value from the parser with a metadata map containing the start rule (:start).