737288bff5
Capture a def's reader metadata on the Chez var. The :def emit now lowers a def
with non-empty metadata to def-var-with-meta!, which stores the user meta
(^:private / ^Type tag / docstring -> {:doc}) in an eq side-table keyed by the
var-cell. jolt-meta of a var-cell merges that onto {:ns :name} derived from the
cell, so every var reports {:ns :name} like Clojure with the def-time meta
layered on. (^{:map} metadata on a def name stays uncompilable for the compiler
generally — analyzer rejects it, the Janet back end punts to its interpreter,
which Chez lacks — so it's out of subset, not a meta-capture gap.)
Added natives-meta.ss to the prelude-cache fingerprint. Prelude parity
1969 -> 1972, 0 new divergences; the three var-metadata allowlist entries
(^:private / ^Type tag / docstring) dropped. New focused gate
test/chez/_var_meta.janet.
45 lines
2.2 KiB
Text
45 lines
2.2 KiB
Text
# jolt-zikh — var def-time metadata capture (^:private / ^Type tag / docstring).
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# (meta (var v)) must carry the def-time reader metadata + :ns/:name, matching the
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# JVM-canonical build/jolt. TDD harness: bin/jolt-chez -e per case, last line ==
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# expected.
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#
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# janet test/chez/_var_meta.janet
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(def jolt-bin (or (os/getenv "JOLT_BIN") "bin/jolt-chez"))
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(def cases
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# NOTE: ^{:map} metadata on a def name (e.g. (def ^{:doc "hi"} dv 1)) reads as
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# (def (with-meta name m) v) and is uncompilable for the COMPILER generally
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# (analyzer.clj rejects it; the Janet back end punts to its interpreter, which
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# Chez lacks) — out of subset, not a meta-capture gap. Shorthand ^:kw / ^Type
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# and the docstring form keep the name a plain symbol, so they're in scope.
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[["^:private on var" "(do (def ^:private pv 1) (:private (meta (var pv))))" "true"]
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["^Type tag on var" "(do (def ^String tv \"a\") (:tag (meta (var tv))))" "String"]
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["(def name doc val)" "(do (def dv2 \"hi\" 1) (:doc (meta (var dv2))))" "hi"]
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["meta carries :name" "(do (def mv 1) (:name (meta (var mv))))" "mv"]
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["meta carries :ns" "(do (def nv 1) (:ns (meta (var nv))))" "user"]
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["plain def: no user meta" "(do (def pl 1) (nil? (:private (meta (var pl)))))" "true"]])
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(defn run-capture [expr]
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(def proc (os/spawn [jolt-bin "-e" expr] :p {:out :pipe :err :pipe}))
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(def out (ev/read (proc :out) 0x100000))
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(def err (ev/read (proc :err) 0x100000))
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(def code (os/proc-wait proc))
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(def lines (filter (fn [l] (not (empty? l)))
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(string/split "\n" (string/trim (if out (string out) "")))))
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[code (if (empty? lines) "" (last lines)) (if err (string err) "")])
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(var pass 0)
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(def fails @[])
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(each [label expr expected] cases
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(def [code got err] (run-capture expr))
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(cond
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(not= code 0) (array/push fails [label (string "exit " code "; err: " (string/trim err))])
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(= got expected) (++ pass)
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(array/push fails [label (string "want `" expected "`, got `" got "`")])))
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(printf "\n_var_meta parity [%s]: %d/%d passed" jolt-bin pass (length cases))
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(when (> (length fails) 0)
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(printf "%d FAIL(s):" (length fails))
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(each [l m] fails (printf " FAIL [%s] %s" l m)))
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(flush)
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(os/exit (if (empty? fails) 0 1))
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