8e86c7c2ec
- types.janet: find-var (ctx-based var resolution), alter-meta!, reset-meta! - evaluator.janet: 10 new special-form dispatch arms for var ops - core.janet: 6 new Clojure-level wrappers in core-bindings - core-meta: add var-aware branch (was struct-only) - core-binding macro: use array-map instead of hash-map (PHM incompatibility) - 8 new tests (17: var system, 18: var metadata) — all pass - 317 total tests, 0 failures
1.3 KiB
core-renames MUST match actual function names in core.janet. "-"→core-sub NOT core--. "fn?" was missing entirely (caused silent nil). Missing entries → symbol treated as unknown global, returns nil. When adding: grep core.janet for actual (defn core-XXX) name, add to BOTH core-renames (string table) and core-fn-values (fn value table).
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Bare tuples in Janet's eval are function calls: (eval [1 2 3]) tries to call 1 as function. Always emit ['tuple 1 2 3] or (tuple 1 2 3) in data-structure emitter. Similarly, (eval (try body (sym handler))) fails because catch is not a Janet special form — must be (try body ([sym] handler)). Discovered during Phase 5/6 compiler work.
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Duplicate function definitions in the same file cause hard-to-diagnose "unknown symbol" errors. In compiler.janet, emit-quote-str was defined twice (once before emit-ast dispatch, once before emit-expr section). The second definition compiled but the first was used by emit-ast dispatch — causing "unknown symbol raw-form->janet". Always grep for the fn name before adding a new definition.
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Janet break can't be used inside let blocks — break returns from the innermost loop, and in a let, there's no loop. Pattern: use (var found nil) + (while ... (if condition (do (set found val) (break)))) then check found after loop.