Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 1 Nov 2026. What's built · Install 0.2.0
jadpo
Reference: Standard library

Standard types

Cookie

On this page

A cookie as a server sets it (RFC 6265 and RFC 6265bis's SameSite): its name and value, then its attributes after ; in the RFC's order and spelling, SID=31d4d96e; Path=/; Secure; HttpOnly. Personal data.

Web and network; not ordered; personal data (online); since Jadpo 0.1.0.

Make one

Build one from its text, Cookie("lang=en-GB"), which checks it: text that isn't one breaks format.

text.parse(raw, as: Cookie) reads one from its text; text that isn't one at all fails malformed, such as SID=31d4 d96e, SID=31d4d96e; secure or SID=31d4d96e; HttpOnly; Secure.

Text, JSON and storage

text.from writes its canonical text, the one form text.parse reads back. JSON sends its canonical text as a string.

Text JSON
lang=en-GB "lang=en-GB"
SID=31d4d96e407aad42; Path=/; Secure; HttpOnly; SameSite=Lax "SID=31d4d96e407aad42; Path=/; Secure; HttpOnly; SameSite=Lax"
lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com "lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com"
__Host-SID=31d4d96e407aad42; Max-Age=3600; Path=/; Secure; SameSite=None "__Host-SID=31d4d96e407aad42; Max-Age=3600; Path=/; Secure; SameSite=None"

It is stored in one column named for the field, of type text. lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com is stored as 'lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com'.

Shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value Shown
lang=en-GB lang=en-GB
SID=31d4d96e407aad42; Path=/; Secure; HttpOnly; SameSite=Lax SID=31d4d96e407aad42; Path=/; Secure; HttpOnly; SameSite=Lax
lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com lang=en-US; Expires=Wed, 21 Oct 2026 07:28:00 GMT; Domain=example.com
__Host-SID=31d4d96e407aad42; Max-Age=3600; Path=/; Secure; SameSite=None __Host-SID=31d4d96e407aad42; Max-Age=3600; Path=/; Secure; SameSite=None

Operations

It has the contract's own operations: text.parse, text.from, text.format, json.read, json.write and ==. It isn't ordered, so < and sorting don't take it. Every standard type meets one contract says how they work.

Markdown for agents: /docs/types/type-cookie.md.Built from Jadpo main at e00e61f.