SDL

Aliases: Specification and Description Language

Provenance: commit 48aff0b7e9 · authored 2026-02-12T12:18:02+01:00 · agent claude-code · model sonnet

2 sources · pl_id: pl/sdl

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. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

SYSTEM SimpleSystem;

BLOCK SimpleBlock;

PROCESS SimpleProcess;

    START;
        NEXTSTATE Waiting;

    STATE Waiting;
        INPUT Signal1;
            TASK 'Process Signal1';
            OUTPUT Ack TO SENDER;
            NEXTSTATE Waiting;

        INPUT Signal2;
            TASK 'Process Signal2';
            NEXTSTATE Done;

    STATE Done;
        STOP;

ENDPROCESS SimpleProcess;

ENDBLOCK SimpleBlock;

ENDSYSTEM SimpleSystem;