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core.actor: try_send()

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This commit is contained in:
Helmut Merz 2026-10-27 09:27:37 +01:00
parent c78e1ac067
commit f0de1a3e7a
1 changed files with 13 additions and 3 deletions
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16
scopes/core/actor.py
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@ -4,9 +4,11 @@ import asyncio
from collections.abc import Awaitable, Callable from collections.abc import Awaitable, Callable
from typing import Any, Optional from typing import Any, Optional
from scopes.util import keywords as k from scopes.util import keywords as k, Symbol
k('full quit')
type Behavior = Callable[[Any], Awaitable[Behavior | None]] type Behavior = Callable[[Any], Awaitable[Behavior | None]]
type Mailbox = asyncio.Queue
async def loop(q: asyncio.Queue, bhv: Behavior) -> None: async def loop(q: asyncio.Queue, bhv: Behavior) -> None:
while True: while True:
@ -14,12 +16,20 @@ async def loop(q: asyncio.Queue, bhv: Behavior) -> None:
if msg is k.quit: if msg is k.quit:
break break
bhv = await bhv(msg) or bhv bhv = await bhv(msg) or bhv
q.task_done()
def create(bhv: Behavior, group: Optional[asyncio.TaskGroup] = None) -> asyncio.Queue: def create(bhv: Behavior, maxsize: int = 0,
q: asyncio.Queue = asyncio.Queue() group: Optional[asyncio.TaskGroup] = None) -> asyncio.Queue:
q: asyncio.Queue = asyncio.Queue(maxsize)
if group is None: if group is None:
asyncio.create_task(loop(q, bhv)) asyncio.create_task(loop(q, bhv))
else: else:
group.create_task(loop(q, bhv)) group.create_task(loop(q, bhv))
return q return q
async def try_send(rcvr: Mailbox, msg: Any) -> Symbol | None:
if rcvr.full():
return k.full
await rcvr.put(msg)
return None