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.
| Language | Source |
|---|---|
| C | src/c |
| C++ | src/cpp |
| Python | src/python |
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" |
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 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
| For | Source |
|---|---|
| lldb | misc/lldb |
| pygments | misc/pygments |
| vim | misc/vim |