# Alconna Graia
该项目为 [`Alconna`](https://github.com/ArcletProject/Alconna) 为 [`GraiaProject`](https://github.com/GraiaProject) 下项目的内建支持
包括解析器、Dispatcher、SayaSchema 和 附加组件
## 快速使用
### 单文件
```python
from arclet.alconna.graia import AlconnaDispatcher, Match, AlconnaProperty
from arclet.alconna import Alconna, Args
...
app = Ariadne(...)
alc = Alconna("!jrrp", Args["sth", str, 1123])
@app.broadcast.receiver(
GroupMessage,
dispatchers=[AlconnaDispatcher(alc, send_flag='stay')]
)
async def test2(
group: Group,
result: AlconnaProperty[GroupMessage],
sth: Match[str]
):
print("sign:", result.result)
print("sender:", group)
print("match", sth.available, sth.result)
```
### 使用 Saya
in module.py:
```python
from arclet.alconna.graia import Alc, Match, AlconnaProperty, AlconnaSchema
from arclet.alconna import Alconna, Args
...
channel = Channel.current()
alc = Alconna("!jrrp", Args["sth", str, 1123])
@channel.use(AlconnaSchema(Alc(alc)))
@channel.use(ListenerSchema([GroupMessage]))
async def test2(group: Group, result: AlconnaProperty[GroupMessage], sth: Match[str]):
print("sign:", result.result)
print("sender:", group)
print("match", sth.available, sth.result)
```
in main.py:
```python
from arclet.alconna.graia import AlconnaBehaviour
from creart import create
...
saya = create(Saya)
create(AlconnaBehaviour)
with saya.module_context():
saya.require("module")
```
### 使用 Saya Util
in module.py:
```python
from graia.ariadne.util.saya import listen
from arclet.alconna.graia import Match, alcommand, from_command, startswith, endswith
from arclet.alconna import Alconna, Args, Arpamar
...
@alcommand(Alconna("!jrrp", Args["sth", str, 1123]), private=False)
async def test1(group: Group, result: Arpamar, sth: Match[str]):
print("sign:", result)
print("sender:", group)
print("match", sth.available, sth.result)
@alcommand("[!|.]hello <name:str>;say <word>", send_error=True)
async def test1(group: Group, result: Arpamar, name: Match[str]):
print("sign:", result)
print("sender:", group)
print("match", name.available, name.result)
@from_command("foo bar {baz}")
@listen(GroupMessage)
async def test2(baz: int):
print("baz", baz)
@startswith("foo bar")
@listen(GroupMessage)
async def test3(event: GroupMessage):
...
@endswith(int)
@listen(GroupMessage)
async def test4(event: GroupMessage):
...
```
in main.py:
```python
from creart import create
...
saya = create(Saya)
with saya.module_context():
saya.require("module")
```
## AlconnaDispatcher 参数说明
```python
class AlconnaDispatcher(BaseDispatcher):
def __init__(
self,
command: Union[Alconna, AlconnaGroup],
*,
send_flag: Literal["reply", "post", "stay"] = "stay",
skip_for_unmatch: bool = True,
send_handler: Optional[Callable[[str], MessageChain]] = None,
allow_quote: bool = False
): ...
```
`command`: 使用的 Alconna 指令
`send_flag`: 解析期间输出信息的发送方式
- reply: 直接发送给指令发送者
- post: 以事件通过 Broadcast 广播
- stay: 存入 AlconnaProperty 传递给事件处理器
`skip_for_unmatch`: 解析失败时是否跳过, 否则错误信息按 send_flag 处理
`send_handler`: send_flag 为 reply 时 输出信息的预处理器
`allow_quote`: 是否允许以回复的方式触发指令
## 附加组件
- `Match`: 查询某个参数是否匹配,如`foo: Match[int]`。使用时以 `Match.available` 判断是否匹配成功,以
`Match.result` 获取匹配结果
- `Query`: 查询某个参数路径是否存在,如`sth: Query[int] = Query("foo.bar")`;可以指定默认值如
`Query("foo.bar", 1234)`。使用时以 `Query.available` 判断是否匹配成功,以 `Query.result` 获取匹配结果
- `assign`: 依托路径是否匹配成功为命令分发处理器。
```python
from arclet.alconna.graia import alcommand, assign
from arclet.alconna import Alconna, Args, Arpamar
...
alc = Alconna(...)
@alcommand(alc, private=False)
@assign("foo")
async def foo(group: Group, result: Arpamar):
...
@alcommand(alc, private=False)
@assign("bar.baz", 1)
async def bar_baz_1(group: Group, result: Arpamar):
...
```
## 便捷方法
```python
from arclet.alconna.graia import Alc, Match
...
app = Ariadne(...)
@app.broadcast.receiver(
GroupMessage, dispatchers=[Alc.from_format("foo bar {baz:int}")]
)
async def test2(group: Group, baz: Match[int]):
print("sender:", group)
print("match", baz.available, baz.result)
```
or
```python
from arclet.alconna.graia import Match, AlconnaSchema
...
channel = Channel.current()
@channel.use(AlconnaSchema.from_("foo <arg:str>", "bar"))
@channel.use(ListenerSchema([GroupMessage]))
async def test2(group: Group, sth: Match[str]):
print("sender:", group)
print("match", sth.available, sth.result)
```
## 文档
[链接](https://graiax.cn/guide/alconna.html#kirakira%E2%98%86dokidoki%E7%9A%84dispatcher)