Struct ASTNode

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pub struct ASTNode {
    pub node_type: ASTNodeType,
    pub source_location: Option<SourceLocation>,
    pub children: Vec<ASTNode>,
}
Expand description

AST 节点结构体。

表示 Onion 语言的抽象语法树节点,是构成整个语法树的基本单元。

§字段说明

  • node_type:节点类型,定义了该节点的语法角色和语义
  • source_location:源码位置信息,用于错误报告和调试
  • children:子节点列表,构成树形结构

§设计原则

§递归结构

AST 节点通过 children 字段形成递归的树形结构,每个节点可以包含任意数量的子节点。

§位置信息

每个节点都可以携带源码位置信息,便于在编译时提供准确的错误定位。

§类型安全

通过 ASTNodeType 枚举确保节点类型的类型安全,避免无效的语法树结构。

Fields§

§node_type: ASTNodeType§source_location: Option<SourceLocation>§children: Vec<ASTNode>

Implementations§

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impl ASTNode

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pub fn new( node_type: ASTNodeType, source_location: Option<SourceLocation>, children: Vec<ASTNode>, ) -> ASTNode

创建新的 AST 节点。

§参数
  • node_type:节点类型
  • source_location:源码位置信息(可选)
  • children:子节点列表
§返回

新创建的 AST 节点实例

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pub fn formatted_print(&self, indent: usize)

格式化打印 AST 节点树。

以缩进的形式递归打印整个 AST 结构,用于调试和可视化。

§参数
  • indent:当前缩进级别

Trait Implementations§

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impl Clone for ASTNode

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fn clone(&self) -> ASTNode

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 ASTNode

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for ASTNode

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for ASTNode

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for ASTNode

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. 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.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,