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  • chris martenschrisamaphone@hci.social
    Oct 18, 2026, 4:59 PM

    the other side of this is parsing i guess. i want to be able to write something whose ast is a(b1(c1, c2, c3), b2(c4, c5)) as, say,

    ```
    a > b1 > c1 | b2 > c4
    > c2 | > c5
    > c3 |
    ```

    (the delimiters are because ideally i want to avoid whitespace sensitivity in parsing...)

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  • chris martenschrisamaphone@hci.social
    Oct 18, 2026, 5:14 PM

    the inspiration for this is the grid-based pattern-rewriting language i've been collaborating on with some games people (play around with it at crowdgames.github.io/trrbt/ede !). the first image is the visual syntax in our web-based editor vs. some speculative text-based syntax for the 2d parts

    a visually-laid-out syntax tree for a program that initializes a grid of characters, then has some control flow whose terminal nodes are rewrite rules. they're cellular-automata style rewrites that have a left- and right-hand side, where the idea is if the LHS appears as a subpattern in the grid, it's replaced with the RHS.
    text-based syntax for a single rule and initial board pattern: rule grow = . _ . . _ . . _ . -o . X . . X . . X . pattern init = _ _ _ _ * _ _ _ _ _ _ _ _ & _ _ X _ X _
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