مستقبل

Compatibility annotation for asynchronous posture.

Syntax: @ مستقبل

Category#

async

Related#

• futura
• annotation-sugar

Examples#

radix/corpus/annotation-sugar/futura-braced.fab (canonical · annotation)#

Braced canonical @ مستقبل unit marker.

@ future { }
fn f() → void {
    return
}

main {
    print "futura-braced"
}

Expected output:

futura-braced

radix/corpus/futura/futura.fab (canonical · annotation)#

Compatibility annotation for asynchronous posture.

# =============================================================================
# مستقبل — Compatibility annotation for asynchronous posture
# =============================================================================
#
# What this teaches:
#   • Preferred async posture — write `غيرمتزامن` for a finite async function.
#   • Compatibility annotation — `@ مستقبل` remains accepted and preserved as
#     the legacy spelling for async posture.
#   • Related keywords: cursor, انتظر_ثابت, انتظر
#
# Common mistakes:
#   • Calling an async function and forgetting to consume the وعد with
#     `انتظر_ثابت`, `انتظر_متغير`, `أعد_منتظرا`, or `انتظر`.
#
# See also: cursor, انتظر_ثابت, انتظر
# =============================================================================

# @ مستقبل — compatibility async function annotation
#
# @ مستقبل
# دالة اسم(…) → نمط { … }
#
# GRAMMAR:
#   annotatedFunc :← '@' 'مستقبل' funcDecl
#   callablePosture :← 'غيرمتزامن'
#
# EXPECTED OUTPUT:
#   none — Rust async runtime whitelist (compile-only in harness)
#
# BACKEND:
#   Rust async runtime not linked in exempla harness (whitelist: مستقبل/futura.fab).

@ future { }
fn responde() → int {
    return 42
}

async_main {
    # انتظر_ثابت awaits the وعد and binds the resolved value
    await_const int responsum ← responde()
    print responsum
}

Expected output:

42