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This is a parser combinator library with an emphasis on being typed. This allows you to parse a string into structured data in a single step.

For example, if we had a list of users along with their login counts, we could parse it easily like so

Example:

import nort
import std/[strutils, strformat]
# Data we are going to parse
const data = """
  jdog1 attempts:5 failed:3
  robot attempts:700 failed:0
  """.unindent()

# Unlike regex, we can build up the grammar to make it easier to read
let
  # `expect` is the main function for mapping
  name = +(expect IdentChars) # Username is anything that isn't Whitespace
  # `e` is an alias for expect
  attempts = e"attempts:" * digit()$count # We can capture and store in a name with `$`
  failed = e"failed:" * digit()$count
  # `*` is used to join items
  line = name$name * (e' ') * attempts$attempt * (e' ') * failed$failure
  # Just like regex, * and + can be used to repeat items. They need to be
  # prefixes though
  everything = *line

echo name.match("jgod1")

for line in everything.match(data).get():
  # Each line has a tuple with the names we binded
  if line.failure.count == 0: # Count was actually parsed as an int!
    echo fmt"{line.name} never failed!"

There are many combinators built into the library which you can find in combinators. There are also some pre-built helpers that can come in handy