Struct swc_common::ExpnInfo

pub struct ExpnInfo {
    pub call_site: Span,
    pub def_site: Option<Span>,
}

Extra information for tracking spans of macro and syntax sugar expansion

Fields

call_site: Span

The location of the actual macro invocation or syntax sugar , e.g. let x = foo!(); or if let Some(y) = x {}

This may recursively refer to other macro invocations, e.g., if foo!() invoked bar!() internally, and there was an expression inside bar!; the call_site of the expression in the expansion would point to the bar! invocation; that call_site span would have its own ExpnInfo, with the call_site pointing to the foo! invocation.

def_site: Option<Span>

The span of the macro definition itself. The macro may not have a sensible definition span (e.g., something defined completely inside libsyntax) in which case this is None. This span serves only informational purpose and is not used for resolution.

Trait Implementations

impl Clone for ExpnInfo

fn clone(&self) -> ExpnInfo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExpnInfo

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

Formats the value using the given formatter.

impl Hash for ExpnInfo

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].