Struct rustc_ast::ast::Block

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pub struct Block {
    pub stmts: Vec<Stmt>,
    pub id: NodeId,
    pub rules: BlockCheckMode,
    pub span: Span,
    pub tokens: Option<LazyAttrTokenStream>,
    pub could_be_bare_literal: bool,
}
Expand description

A block ({ .. }).

E.g., { .. } as in fn foo() { .. }.

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§stmts: Vec<Stmt>

The statements in the block.

§id: NodeId§rules: BlockCheckMode

Distinguishes between unsafe { ... } and { ... }.

§span: Span§tokens: Option<LazyAttrTokenStream>§could_be_bare_literal: bool

The following isn’t a parse error, but will cause multiple errors in following stages.

let x = {
    foo: var
};

#34255

Trait Implementations§

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impl Clone for Block

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fn clone(&self) -> Block

Returns a copy 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 Block

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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<__D: Decoder> Decodable<__D> for Block

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fn decode(__decoder: &mut __D) -> Self

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impl DummyAstNode for Block

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fn dummy() -> Self

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impl<__E: Encoder> Encodable<__E> for Block

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fn encode(&self, __encoder: &mut __E)

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impl HasAttrs for Block

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const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false

This is true if this HasAttrs might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes. Read more
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fn attrs(&self) -> &[Attribute]

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fn visit_attrs(&mut self, _f: impl FnOnce(&mut AttrVec))

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impl HasSpan for Block

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fn span(&self) -> Span

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impl HasTokens for Block

Auto Trait Implementations§

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impl !RefUnwindSafe for Block

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impl !Send for Block

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impl !Sync for Block

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impl Unpin for Block

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impl !UnwindSafe for Block

Blanket Implementations§

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impl<T> Any for Twhere
    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 Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

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 Twhere
    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 Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 48 bytes