Enum rustc_ap_rustc_ast::ast::MacArgs

pub enum MacArgs {
    Empty,
    Delimited(DelimSpan, MacDelimiter, TokenStream),
    Eq(Span, TokenStream),
}

Arguments passed to an attribute or a function-like macro.

Variants

Empty

No arguments - #[attr].

Delimited(DelimSpan, MacDelimiter, TokenStream)

Delimited arguments - #[attr()/[]/{}] or mac!()/[]/{}.

Eq(Span, TokenStream)

Arguments of a key-value attribute - #[attr = "value"].

Implementations

impl MacArgs

pub fn delim(&self) -> DelimToken

pub fn span(&self) -> Option<Span>

pub fn inner_tokens(&self) -> TokenStream

Tokens inside the delimiters or after =. Proc macros see these tokens, for example.

pub fn outer_tokens(&self) -> TokenStream

Tokens together with the delimiters or =. Use of this method generally means that something suboptimal or hacky is happening.

pub fn need_semicolon(&self) -> bool

Whether a macro with these arguments needs a semicolon when used as a standalone item or statement.

Trait Implementations

impl Clone for MacArgs

fn clone(&self) -> MacArgs

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MacArgs

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for MacArgs

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

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

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<__CTX> HashStable<__CTX> for MacArgs where
    __CTX: HashStableContext, 

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)