Trait rustc_ast::ast_like::AstLike

pub trait AstLike: Sized + Debug {
    const SUPPORTS_CUSTOM_INNER_ATTRS: bool;

    fn attrs(&self) -> &[Attribute];
    fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>));
    fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>;
}

An AstLike represents an AST node (or some wrapper around and AST node) which stores some combination of attributes and tokens.

Associated Constants

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

This is true if this AstLike might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes

If this is false, then this AstLike definitely does not support ‘custom’ inner attributes, which enables some optimizations during token collection.

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Required methods

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

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Implementations on Foreign Types

impl<T: AstLike> AstLike for Option<T>

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

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Implementors

impl AstLike for StmtKind

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Nonterminal

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Arm

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for AttrItem

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Attribute

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Block

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Expr

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for ExprField

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for FieldDef

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for GenericParam

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Item

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Local

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for MacCallStmt

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Param

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Pat

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for PatField

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Path

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Stmt

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Ty

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Variant

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for Visibility

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for AssocItem

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl AstLike for ForeignItem

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl<T: AstLike + 'static> AstLike for P<T>

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

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