Struct LocalFrame

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pub struct LocalFrame<'session> { /* private fields */ }
Expand description

栈帧

直接从Rust端调用PB代码时一般需要创建栈帧来释放调用阶段产生的临时资源,比如创建的对象

§Examples

//创建栈帧
let frame = LocalFrame::new(&session);
//手动退出栈帧
//pop调用不是必须的,变量drop时会自动退出
frame.pop();

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impl<'session> LocalFrame<'session>

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pub fn new(session: &Session) -> LocalFrame<'_>

创建栈帧

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pub fn pop(self)

手动退出栈帧

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impl<'session> Drop for LocalFrame<'session>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'session> Freeze for LocalFrame<'session>

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impl<'session> RefUnwindSafe for LocalFrame<'session>

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impl<'session> !Send for LocalFrame<'session>

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impl<'session> !Sync for LocalFrame<'session>

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impl<'session> Unpin for LocalFrame<'session>

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impl<'session> UnwindSafe for LocalFrame<'session>

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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, 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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

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.