/*
package regex_parser implements a Pratt parser, also known as a Top-Down
Operator Precedence parser, for parsing tokenized regular expression patterns.

References:
- https://dl.acm.org/doi/10.1145/512927.512931
- https://tdop.github.io/
- http://crockford.com/javascript/tdop/tdop.html
*/
package regex_parser