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added closures

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This commit is contained in:
Moritz Gmeiner 2024-08-28 23:58:55 +02:00
commit b425a59db5
5 changed files with 59 additions and 28 deletions
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7
lib/interpreter.ml
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@ -140,7 +140,7 @@ let rec interpret_expr (env : environment) (expr_node : expr_node) : lox_value i
RuntimeError.make pos msg |> error
else
match fn args with Ok value -> Ok value | Error s -> RuntimeError.make pos s |> error)
| Function { name; arity; arg_names; body } -> (
| Function { name; env; arity; arg_names; body } -> (
let args_len = List.length args in
if args_len <> arity then
let msg =
@ -149,7 +149,8 @@ let rec interpret_expr (env : environment) (expr_node : expr_node) : lox_value i
in
RuntimeError.make pos msg |> error
else
let env = Env.push_frame env in
(* let env = Env.push_frame env in *)
let env = Env.enter env in
let () =
List.iter2 (fun name value -> assert (Env.define env name value)) arg_names args
in
@ -190,7 +191,7 @@ and interpret_stmt (env : environment) (stmt_node : stmt_node) : unit interprete
in
RuntimeError.make pos msg |> error
| FunDecl { name; arg_names; body } ->
let fn = make_lox_function name arg_names body in
let fn = make_lox_function name env arg_names body in
let success = Env.define env name fn in
if success then Ok ()
else