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The paren printer breaks an if-let as it breaks an if, and a one-key dyn get takes no slot.

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This commit is contained in:
Joseph Ferano 2026-09-26 12:17:47 +07:00
parent 62fd7b19bc
commit 8d08e82b7c
2 changed files with 7 additions and 2 deletions
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7
lib/check.ml
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@ -11016,9 +11016,14 @@ and checked_get ctx ~want loc (target : Tast.expr) (idx : Ast.expr list) =
and dyn_get ctx ~want loc (target : Tast.expr) (keys : Ast.expr list) =
let nil () = rt loc Types.Dyn "flan_dyn_nil" [] in
let one v k = rt loc Types.Dyn "flan_dyn_get_at" [ v; k; here loc ] in
(* A slot per key only when there are several: one key is passed as it
stands, so a single-key get compiles as it always did. *)
let slotted = List.length keys > 1 in
let keys =
map_lr
(fun k -> (fresh_slot ctx Types.Dyn, check ctx ~want:Types.Dyn k))
(fun k ->
let v = check ctx ~want:Types.Dyn k in
((if slotted then fresh_slot ctx Types.Dyn else -1), v))
keys
in
let kvar (s, _) = mk loc Types.Dyn (Tast.Local s) in

2
lib/paren_printer.ml
View File

@ -38,7 +38,7 @@ let rec flat spell (f : Form.t) =
(* Heads whose arguments are statements or clauses rather than values: these
break one argument to a line, never filled. *)
let statement_heads =
[ "let"; "loop"; "set"; "if"; "when"; "unless"; "cond"; "while"; "until";
[ "let"; "loop"; "set"; "if"; "if-let"; "when"; "unless"; "cond"; "while"; "until";
"dotimes"; "match"; "handler-case"; "handler-bind"; "restart-case";
"return"; "defer"; "do"; "fn"; "with-allocator"; "comment"; "quasiquote";
"break"; "continue" ]