Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceSoftware

LanguageValues and typesStandard typesSoftware

SpdxLicence

On this page

A software licence as SPDX writes it: MIT OR Apache-2.0.

Use it for a package's licence.

Shape

One value, held as text in one set form, with no parts: DocumentRef-spdx-tool-1.2:LicenseRef-MIT-Style-2.

Example

example
SpdxLicence("MIT OR Apache-2.0")

SpdxLicence(raw) checks the text, and text that isn't one breaks the format rule.

text.parse(raw, as: SpdxLicence) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as mit, Apache-2 or MIT or Apache-2.0.

Good to know

  • Each name is spelled as the SPDX list has it, so mit and Apache-2 are refused.
  • == tells you whether two are the same. < and list.sort_by don't take it.

In JSON

A string, in a request, a response or json.write:

json
"MIT""Apache-2.0""MIT OR Apache-2.0"

Details

Text form, storage, how it is shown, and operations

SpdxLicence is in the group Software, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: MIT, Apache-2.0 and MIT OR Apache-2.0.

How it is stored

It is stored in one column named for the field, of type text. (MIT OR Apache-2.0) AND BSD-3-Clause is stored as '(MIT OR Apache-2.0) AND BSD-3-Clause'.

How it is shown to people

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

With locale: Locale.en_gb:

Value Shown
MIT MIT
Apache-2.0 Apache-2.0
MIT OR Apache-2.0 MIT OR Apache-2.0
GPL-2.0-or-later WITH Classpath-exception-2.0 GPL-2.0-or-later WITH Classpath-exception-2.0
(MIT OR Apache-2.0) AND BSD-3-Clause (MIT OR Apache-2.0) AND BSD-3-Clause
LGPL-2.1+ LGPL-2.1+
LicenseRef-acme-internal LicenseRef-acme-internal
DocumentRef-spdx-tool-1.2:LicenseRef-MIT-Style-2 DocumentRef-spdx-tool-1.2:LicenseRef-MIT-Style-2

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-spdx-licence.md.Built from Jadpo main at aee2e8f.