Enum rustc_ap_syntax::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"].

Methods

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 Decodable for MacArgs

fn decode<__D: Decoder>(d: &mut __D) -> Result<MacArgs, __D::Error>

impl Encodable for MacArgs

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

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

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