Files
dimgigov 21f8b2e85a feat: async/await/spawn + fix else-if lowering bug
Self-hosted compiler (buxc2):
- Add async/await/spawn tokens, parsing, HIR, lowering, C emission
- Fix pointer type emission (*T -> T*) in C backend
- Fix sizeof(Type) parsing with parentheses
- Fix import ::{...} infinite loop guard
- Fix int64 emission by avoiding else-if chain workaround
- Add debug-free cli and hir_lower

Bootstrap compiler (Nim):
- Fix critical else-if lowering bug in hir_lower.nim:
  when both elseIfs and else block exist, elseIfs were dropped
  causing all else-if chains to collapse to if+else only

Runtime:
- Fix bux_async_await memory corruption (don't free in run)
- Add bux_remove_from_ready for safe cleanup
- Fix forward declaration and deduplicate bux_now_ms

Docs & examples:
- Update async.bux example with proper int64 params
- Update README, LanguageRef, Stdlib, PLAN for async features
- Mark Phase 7.10 bootstrap loop as completed

All 27 examples pass. buxc2 check/build work on all examples.
2026-06-01 02:57:46 +03:00

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import Std::Io::{PrintLine, PrintInt};
extern func bux_async_yield();
extern func bux_async_run();
extern func bux_async_spawn(fn: *void) -> *void;
extern func bux_async_await(handle: *void) -> *void;
extern func bux_async_return(value: *void, size: int64);
extern func bux_async_sleep(ms: int64);
async func Compute() -> int {
PrintLine("Compute: start");
bux_async_sleep(100);
PrintLine("Compute: after 100ms");
let result: int = 42;
bux_async_return((&result) as *void, sizeof(int));
return result;
}
async func Double() -> int {
PrintLine("Double: start");
bux_async_sleep(50);
PrintLine("Double: after 50ms");
let result: int = 84;
bux_async_return((&result) as *void, sizeof(int));
return result;
}
func Main() -> int {
PrintLine("Main: start");
let h1: *void = spawn Compute();
let h2: *void = spawn Double();
let r1Ptr: *int = h1.await as *int;
let r2Ptr: *int = h2.await as *int;
let r1: int = *r1Ptr;
let r2: int = *r2Ptr;
PrintLine("Results:");
PrintInt(r1);
PrintLine("");
PrintInt(r2);
PrintLine("");
PrintLine("Main: done");
return 0;
}