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Propagate source position through macroexpansion

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hc-expand-1 now carries the macro call form's :line/:column onto the top of a
list expansion that has none of its own (merged under any meta the macro set),
so errors and stack traces in macro-generated code point at the call site —
Clojure parity. The analyze recursion re-expands inner macros, so each level's
top form picks it up, matching the reference compiler. (meta (macroexpand-1
'(when x y))) now reports the call-site line.

A direct-link fn defined through a user macro (build-app's defguarded) registers
with a real line, so build-smoke's trace assertion covers macro-defined fns.

Runtime .ss (host-contract.ss) — no re-mint; selfhost holds.

Phase 3's optional items are deferred: :line-in-ex-data has no clean consumer
(it would pollute ex-data, break = and printing, and positions already surface
via the trace + top-level location), and Chez source-object emission is a large
backend change the jv$-name registry already sidesteps.
This commit is contained in:
Yogthos 2026-06-25 21:56:08 -04:00
parent 57bab5d409
commit 8fd5cf9f68
3 changed files with 30 additions and 4 deletions
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3
test/chez/unit.edn
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@ -339,6 +339,9 @@
{:suite "reader" :expr "(nil? (meta (read-string \"()\")))" :expected "true"}
{:suite "reader" :expr "(:foo (meta (read-string \"^:foo (x y)\")))" :expected "true"}
{:suite "reader" :expr "(:line (meta (read-string \"^:foo (x y)\")))" :expected "1"}
{:suite "reader" :expr "(:line (meta (macroexpand-1 (read-string \"(when x y)\"))))" :expected "1"}
{:suite "reader" :expr "(:line (meta (macroexpand-1 (read-string \"\\n\\n(when x y)\"))))" :expected "3"}
{:suite "reader" :expr "(:column (meta (macroexpand-1 (read-string \"(when x y)\"))))" :expected "1"}
{:suite "reader" :expr "(= 42 (with-in-str \"42\" (read)))" :expected "true"}
{:suite "reader" :expr "(= (quote (+ 1 2)) (with-in-str \"(+ 1 2)\" (read)))" :expected "true"}
{:suite "reader" :expr "(with-in-str \"1 2\" [(read) (read)])" :expected "[1 2]"}