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App

Struct App 

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pub struct App { /* private fields */ }

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impl App

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pub fn new(reg: &Registry) -> Result<App>

由注册表构建命令树。不可绑定的字段形状(嵌套 struct、元素为 struct 的切片)与有歧义的位置参数(optional 后面的 required)是 配置错误。

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pub fn new_with_options(reg: &Registry, opts: Options) -> Result<App>

带前端选项的构建;None 选项保持默认。

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pub fn set_output( &mut self, out: Option<Box<dyn Write + Send>>, err_out: Option<Box<dyn Write + Send>>, )

重定向输出流;None 保持现状。嵌入大程序/测试必备。

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pub fn use_mw(&mut self, mw: ExecFunc)

追加 Execute 中间件(最外层最先)。next() 续链到 Invoke + 渲染; 中间件可改写入参、短路(跳过 next 自绘)或包装 next 计时。

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pub fn run(&mut self, args: &[String]) -> i32

App 自身的执行入口。

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pub fn run_ctx(&mut self, ctx: &Ctx, args: &[String]) -> i32

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pub fn execute( &mut self, ctx: &Ctx, node: CmdNode, args: &[String], format: Format, bin: &str, ) -> Result<()>

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impl !RefUnwindSafe for App

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impl !UnwindSafe for App

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impl Freeze for App

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impl Send for App

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impl Sync for App

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impl Unpin for App

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impl UnsafeUnpin for App

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more