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Improve name and documentation of generic_extension

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This function doesn't *create* a (rules based) macro, it *expands* it.
Thus, the documentation was wrong.
This commit is contained in:
est31 2022-05-13 08:42:39 +02:00
parent c6499fd998
commit cc3c5d2700
1 changed files with 4 additions and 3 deletions
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7
compiler/rustc_expand/src/mbe/macro_rules.rs
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@ -175,7 +175,7 @@ impl TTMacroExpander for MacroRulesMacroExpander {
if !self.valid { if !self.valid {
return DummyResult::any(sp); return DummyResult::any(sp);
} }
generic_extension( expand_macro(
cx, cx,
sp, sp,
self.span, self.span,
@ -202,8 +202,9 @@ fn trace_macros_note(cx_expansions: &mut FxHashMap<Span, Vec<String>>, sp: Span,
cx_expansions.entry(sp).or_default().push(message); cx_expansions.entry(sp).or_default().push(message);
} }
/// Given `lhses` and `rhses`, this is the new macro we create /// Expands the rules based macro defined by `lhses` and `rhses` for a given
fn generic_extension<'cx, 'tt>( /// input `arg`.
fn expand_macro<'cx, 'tt>(
cx: &'cx mut ExtCtxt<'_>, cx: &'cx mut ExtCtxt<'_>,
sp: Span, sp: Span,
def_span: Span, def_span: Span,