bjoernager/rust
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Expand NtExpr tokens only in key-value attributes

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This commit is contained in:
Vadim Petrochenkov 2020-09-27 16:52:51 +03:00
parent 338f939a8d
commit 19dbb02a89
18 changed files with 402 additions and 134 deletions
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6
compiler/rustc_expand/src/mbe/transcribe.rs
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@ -20,6 +20,10 @@ use std::mem;
struct Marker(ExpnId, Transparency);
impl MutVisitor for Marker {
fn token_visiting_enabled(&self) -> bool {
true
}
fn visit_span(&mut self, span: &mut Span) {
*span = span.apply_mark(self.0, self.1)
}
@ -277,7 +281,7 @@ pub(super) fn transcribe<'a>(
// preserve syntax context.
mbe::TokenTree::Token(token) => {
let mut tt = TokenTree::Token(token);
marker.visit_tt(&mut tt);
mut_visit::visit_tt(&mut tt, &mut marker);
result.push(tt.into());
}

3
compiler/rustc_expand/src/mut_visit/tests.rs
View file

@ -15,6 +15,9 @@ fn fake_print_crate(s: &mut pprust::State<'_>, krate: &ast::Crate) {
struct ToZzIdentMutVisitor;
impl MutVisitor for ToZzIdentMutVisitor {
fn token_visiting_enabled(&self) -> bool {
true
}
fn visit_ident(&mut self, ident: &mut Ident) {
*ident = Ident::from_str("zz");
}