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frame allocs (25.2): @frame on a step list's field, @alloc_ok on a statement, and on an exported function

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A field declared '@frame run: fn(...)' makes every function stored in it a frame root, as a System's
tick is. @alloc_ok("why") before a statement takes that statement out of frame_allocs and makes what
it allocates declared at run time; a function holding one keeps the fence's scope depth and puts it
back at its return, so a return inside the statement cannot leave the scope open. @alloc_ok above
'export function' was lost - export parses the declaration one call down - and is now carried to it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 15:56:32 +03:00
parent b35409254e
commit 1e2a6bab5b
7 changed files with 75754 additions and 74774 deletions
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18
selfhost/frontend/parse.ludic
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@ -470,9 +470,20 @@ function block() -> Node {
# unless the specific rule already set one. The line drives --coverage and the
# panic/expect file:line messages.
function stmt() -> Node {
var aok = false
if is_op("@") and (toks[pi + 1].text == "alloc_ok") { # 25.2: @alloc_ok("why") before one statement
pi += 2
eat_op("(")
let why = expr()
if why.kind != E_STR or len(why.s) == 0 { perr("@alloc_ok needs its reason: @alloc_ok(\"a memo miss, bounded by MM_CAP\")") }
eat_op(")")
skipnl()
aok = true
}
let ln = toks[pi].line
let n = stmt_body()
if n.line == 0 { n.line = ln }
if aok { push(g_aok_nodes, n) }
return n
}
@ -925,7 +936,6 @@ function parse_one_decl() -> void {
var esys_phase: pointer = null
var ns_name: pointer = null # @Namespace(Name) — a package-provided Foo.* namespace (#62)
var is_det = false # @deterministic — no floating point inside (emit_float.ludic)
var is_aok = false # @alloc_ok("why") — not counted by 25.2's frame allocations
while is_op("@") {
pi += 1; let a = eat_id() # collect a leading @annotation
if a == "export" { is_export = true }
@ -959,7 +969,7 @@ function parse_one_decl() -> void {
let why = expr()
if why.kind != E_STR or len(why.s) == 0 { perr("@alloc_ok needs its reason: @alloc_ok(\"a memo miss, bounded by MM_CAP\")") }
eat_op(")")
is_aok = true
g_aok_pending = true # a global: `export` parses the declaration one call down
}
else if a == "ClearColor" { # @ClearColor(colour) — Render auto-clear + auto-present (#86)
eat_op("(")
@ -1032,7 +1042,7 @@ function parse_one_decl() -> void {
if is_id("handler") {
let h = parse_system()
if is_det { push(g_det_names, h.s) }
if is_aok { push(g_alloc_ok_names, h.s) }
if g_aok_pending { push(g_alloc_ok_names, h.s); g_aok_pending = false }
if (role != null) { if (role == "server") { h.ival = 1 } else { h.ival = 2 } } # N5: @Server=1 / @Predicted=2
if (on_event != null) { register_onlisten(on_event, h.a); return } # @On(Event) listener
if (onspawn_model != null) {
@ -1103,7 +1113,7 @@ function parse_one_decl() -> void {
let f = parse_fn()
if is_unsafe { f.uns = 1 }
if is_det { push(g_det_names, f.s) }
if is_aok { push(g_alloc_ok_names, f.s) }
if g_aok_pending { push(g_alloc_ok_names, f.s); g_aok_pending = false }
if is_export { f.ival = 1 }
if (sys_phase != null) { push(g_mod_sys_fn, f.s); push(g_mod_sys_phase, sys_phase) } # #64: register at load
if (esys_comp != null) { push(g_esys_comp, esys_comp); push(g_esys_fn, f.s); push(g_esys_phase, esys_phase) } # #62: package engine system