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Step 18 (part 4): _hyperscript compiler — AST → SX expressions
lib/hyperscript/compiler.sx — transforms parsed hyperscript AST into
SX expressions targeting web/lib/dom.sx primitives. Two entry points:
hs-to-sx — AST node → SX expression
hs-to-sx-from-source — source string → SX (tokenize+parse+emit)
Compiler handles:
Expressions: me/it/event, refs, queries, attrs, styles, locals,
arithmetic, comparison, boolean, array literals, property access,
DOM traversal (closest/next/previous/first/last), type conversion,
membership test, exists/empty/matches/contains predicates
Commands: add/remove/toggle class, set (var/attr/style/prop dispatch),
put, if/else, do, wait, wait-for, log, send, trigger, hide, show,
transition, repeat, fetch, call, return, throw, settle, go, append,
tell (rebinds me), for, take, make, install, measure, inc/dec
Features: on (with from/filter/every), init, def, behavior
Maps to SX primitives: dom-add-class, dom-set-attr, dom-set-style,
dom-set-prop, dom-query, dom-closest, dom-dispatch, dom-append, etc.
33 compiler tests across 10 suites. 3076/3076 full build, zero regressions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-04-06 08:31:32 +00:00 |
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