Struct VariableContext

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pub struct VariableContext { /* private fields */ }
Expand description

变量上下文管理器。

管理多层嵌套的作用域,支持上下文和帧的推入/弹出操作。 用于跟踪不同作用域中的变量定义和可见性。

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impl VariableContext

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pub fn all_contexts(&self) -> &Vec<Vec<VariableFrame>>

获取所有上下文的引用。

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impl VariableContext

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pub fn new() -> Self

创建新的变量上下文。

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pub fn define_variable(&mut self, name: String, var: Variable)

在当前作用域定义变量。

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pub fn get_variable(&self, name: &str) -> Option<&Variable>

查找变量(搜索所有上下文和帧)。

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pub fn get_variable_current_context(&self, name: &str) -> Option<&Variable>

在当前上下文中查找变量。

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pub fn push_frame(&mut self)

推入新的作用域帧。

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pub fn pop_frame(&mut self) -> Result<(), String>

弹出作用域帧。

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pub fn push_context(&mut self)

推入新的上下文。

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pub fn pop_context(&mut self) -> Result<(), String>

弹出上下文。

Trait Implementations§

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impl Clone for VariableContext

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fn clone(&self) -> VariableContext

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for VariableContext

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.