Enum rustc_resolve::macros::MacroRulesScope

pub enum MacroRulesScope<'a> {
    Empty,
    Binding(&'a MacroRulesBinding<'a>),
    Invocation(ExpnId),
}

The scope introduced by a macro_rules! macro. This starts at the macro's definition and ends at the end of the macro's parent module (named or unnamed), or even further if it escapes with #[macro_use]. Some macro invocations need to introduce macro_rules scopes too because they can potentially expand into macro definitions.

Variants

Empty

Empty "root" scope at the crate start containing no names.

Binding(&'a MacroRulesBinding<'a>)

The scope introduced by a macro_rules! macro definition.

Invocation(ExpnId)

The scope introduced by a macro invocation that can potentially create a macro_rules! macro definition.

Trait Implementations

impl<'a> Clone for MacroRulesScope<'a>

pub fn clone(&self) -> MacroRulesScope<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for MacroRulesScope<'a>

impl<'a> Debug for MacroRulesScope<'a>

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

Formats the value using the given formatter.