flan/test/programs/reload-v6.flan
Joseph Ferano a4c6b996ff def re-runs its initialiser, and defvar is renamed defonce
The trio the author decided on 2026-09-20 is now all built: def is CL's
defparameter — its initialiser runs on every daemon re-run, unguarded, so
an edited initialiser repaints the same storage on C-c C-c plus re-run —
defonce (Clojure's name for CL's defvar, per the author) initialises once
behind the .init~once. flag, and defconst stays the image.

One parse arm reads both forms; the difference is Ast.reinit, carried to
Tast.global's grerun. Emit.startup_plan gives a def no guard flag, and
Check.check_global lifts every def initialiser — zero and literal
included — into global/<n>, so the host's startup reaches it through the
function cell and a re-evaluated def swaps it (Session's def_inits;
Emit.redefinition declares the cell for a non-sibling target). The old
defvar spelling is refused with the rename and both compiling spellings,
and every program, test, doc and editor list is swept — except sand.flan,
the author's live WIP, whose seven defvar lines are flagged in FIX.org
and keep its three dependent tests red on this branch.
2026-09-21 07:12:04 +07:00

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;;;; A run-time-new global with a value of its own, which is the half of the
;;;; new-name path that a zeroed defonce cannot measure: [flan_dev_global]
;;;; allocates with calloc, so a global declared zero looks right whether or
;;;; not its initial value travelled with the module. [tuning] is 42, and the
;;;; transcript is the number the host prints, so an image that never arrived
;;;; prints 4 rather than 88.
(defonce counter i64)
(defonce tuning i64 42)
(defn helper [x i64] i64 (* x 2))
(defn bump [] i64
(println "v6")
(set counter (+ counter tuning 1))
(helper counter))
(defn outer [] i64 (bump))