[help]: command line argument parser

[hamidb80]

[help]: command line argument parser

[kgscialdone]

The many function doesn't know you want the characters it's parsing to end up as a string; it only knows how to make seqs. You can use the join function to coalesce those seqs into strings, and the asSeq function to wrap as needed so & doesn't complain about mismatched result types.

If you'd like some more complex examples than the admittedly limited ones in the documentation site, you can check out the integrations test suite towards the bottom of tests/tests.nim.

import honeycomb, print

const text = "make global -orient RXY -name vff"

let parser = (
  (many(letter).join << whitespace).asSeq &
  many((many(c('-') | alphanumeric).join << whitespace) & (many(letter).join << optional(whitespace))) <<
  eof
)

print parser.parse text

ParseResult[seq[seq[string]]](
  kind: success, 
  value: @[
    @["make"], 
    @["global", ""], 
    @["-orient", "RXY"], 
    @["-name", "vff"]
  ], 
  tail: "", 
  fromInput: "make global -orient RXY -name vff"
)

[kgscialdone]

You absolutely can, while it's not using Honeycomb specifically you can check out the parser I wrote for my language SeekWhence, which uses a very similar library in Python called parsy.

[hamidb80]

I guess there should be a "add result after previous result" operator like ><. ( because & is not satisfies my need )

[hamidb80]

If you'd like some more complex examples than the admittedly limited ones in the documentation site, you can check out the integrations test suite towards the bottom of tests/tests.nim.

sorry for interruption,
can I use honeycomb to parse nested things? [like arrays or objects in JSON]
I couldn't find any examples