CASL

Aliases: Common Algebraic Specification Language

Provenance: commit 66a3fec46b · authored 2026-02-10T19:44:53+01:00 · agent claude-code · model sonnet

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

library Hugo

spec Witness =
 free type s ::= a | b
end

spec Hugo =
 sort s
 ops a, b : s
 . not a = b
then %cons
 sort t = {x : s . not x = a}
then %cons
 sort u = {x : t . not x = b}
 . not a = b
end

spec Hugo2 =
 sort s
 ops a, b : s
 . not a = b
then %implies
 . exists x : s . not x = a
then %cons
 sort t = { x : s . not x = a}
then %implies
 . not a = b
end