Procyon

Procyon is a simple object notation. It's a little more than JSON and a lot less than YAML. For a quick introduction, see lang.pn.

• Types
• Tools
  • pnfmt
  • pn2json
• Extras

Repository Structure

Language	Source
C	src/c
C++	src/cpp
Python	src/python

Types

There are eight Procyon types:

Group	Subgroup	Type	Description	Short form
Scalar	Const	Null	Nothing	null
		Boolean	True/False	true, false
	Numeric	Integer	Signed, 64-bit	0, 1, -99
		Float	IEEE 754 double	0.0, 1e100, -inf, nan
Vector	Raw	Data	Binary data	$, $ff0000
		String	Unicode	"", "\u270c!", "🍱"
	Sequence	Array	Ordered list	[1, true, 3.0]
		Map	Key-value pairs	{b: false, i: 0}

In addition to short form, the four vector types have a long form:

Data	String	Array	Map
$ 01234657 $ 89abcdef $ 01234567 $ 89abcdef	> Soft-wrap with “>” | Hard-wrap with “|” > Final \n unless “!” !	* "Bullets" * "Use “*”"	key: "unqoted" "\"": "quoted"

Tools

pnfmt

Procyon notation has a standard style and format. The pnfmt tool will automatically convert files to the standard style and rewrap strings for readability.

usage: pnfmt [-i | -o OUT] [IN]

options:
 -i, --in-place               format file in-place
 -o, --output=FILE            write output to path
 -h, --help                   show this help screen

pn2json

pn2json converts Procyon to JSON, with a few conversions for unsupported types and values:

Procyon	JSON
inf	1e999
nan	null
$0123	"0123"

usage: pn2json [options] [FILE.pn]

options:
     --traditional            format JSON traditionally (default)
     --comma-first            format JSON with comma first
 -m, --minify                 minify JSON
 -r, --root                   print root string or data instead of JSON
 -h, --help                   show this help screen

Extras

For	Source
lldb	misc/lldb
pygments	misc/pygments
vim	misc/vim