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Phase 3d: declaration modifiers become @annotations (Rule A)

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edge/pure/export prefix keywords retired; modifiers are now leading @annotations
(@export, @edge, @pure, @deterministic). parse_one_decl collects a leading @anno
run and @export sets the fn export flag; dead edge-dispatch removed from
parse_system. Migrated examples/lib/combat.ludic; old prefixes now rejected.

Behavior-identical: the export flag is parse-only in the self-hosted emitter
(emits @fn_<name> for every fn, never reads the flag), so IR is byte-identical.
Reseeded, fixpoint holds, test.sh 14/14. Docs updated. Phase 3 complete.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-27 16:16:16 +03:00
parent b643037d8f
commit 9a558d6b58
9 changed files with 782 additions and 765 deletions
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1476
selfhost/ludicc.seed.ll
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17
selfhost/parse.ludic
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@ -272,8 +272,18 @@ fn already_loaded(full: ptr) -> bool {
return false
}
# parse one top-level declaration (or resolve an import) into `prog`
# parse one top-level declaration (or resolve an import) into `prog`.
# Modifiers are `@annotations` in front of the declaration: `@export`, `@edge`,
# `@pure`, `@deterministic`, … — one channel, not a zoo of prefix keywords.
fn parse_one_decl() -> void {
let is_export = false
while is_op("@") {
pi = pi + 1; let a = eat_id() # collect a leading @annotation
if streq(a, "export") { is_export = true }
if is_op("(") { let d = 0 # optional @anno(args) — skipped
while true { if is_op("(") { d = d + 1 }; if is_op(")") { d = d - 1 }; pi = pi + 1; if d == 0 { break } } }
skipnl()
}
if is_id("import") { pi = pi + 1
let t = toks[pi]
if t.kind != TK_STR { perr("expected \"path\" after import") }
@ -284,12 +294,11 @@ fn parse_one_decl() -> void {
if is_id("struct") { push(prog, parse_struct()); return }
if is_id("component") { push(prog, parse_component()); return }
if is_id("archetype") { push(prog, parse_archetype()); return }
if is_id("system") or is_id("edge") { push(prog, parse_system()); return }
if is_id("system") { push(prog, parse_system()); return }
if is_id("ui") { push(prog, parse_ui()); return }
if is_id("var") { push(prog, parse_var()); return }
if is_id("const") { push(prog, parse_const()); return }
if is_id("export") { pi = pi + 1; let f = parse_fn(); f.ival = 1; push(prog, f); return }
if is_id("fn") or is_id("pure") { if is_id("pure") { pi = pi + 1 }; push(prog, parse_fn()); return }
if is_id("fn") { let f = parse_fn(); if is_export { f.ival = 1 }; push(prog, f); return }
if is_id("extern") { push(prog, parse_extern()); return }
if is_id("main") { push(prog, parse_main()); return }
perr("expected declaration")

1
selfhost/parse_game.ludic
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@ -20,7 +20,6 @@ fn skip_clause() -> void {
}
fn parse_system() -> Node {
if is_id("edge") { pi = pi + 1 } # optional `edge` modifier before `system`
pi = pi + 1; let n = node(N_SYS); n.s = eat_id(); n.ty = "Update"
# clauses: @anno, phase X, reads/writes/needs/uses [..], query (..) [..]
# A `query (vars) [terms] where c` clause desugars to a body wrapped in one