bjoernager/rust
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Always format to internal String in FmtPrinter

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This avoids monomorphizing for different parameters, decreasing generic code
instantiated downstream from rustc_middle.
This commit is contained in:
Mark Rousskov 2022-02-18 16:15:29 -05:00
parent 45e2c2881d
commit efb99d780d
10 changed files with 82 additions and 80 deletions
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12
compiler/rustc_borrowck/src/diagnostics/mod.rs
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@ -488,8 +488,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
/// Return the name of the provided `Ty` (that must be a reference) with a synthesized lifetime
/// name where required.
pub(super) fn get_name_for_ty(&self, ty: Ty<'tcx>, counter: usize) -> String {
let mut s = String::new();
let mut printer = ty::print::FmtPrinter::new(self.infcx.tcx, &mut s, Namespace::TypeNS);
let mut printer = ty::print::FmtPrinter::new(self.infcx.tcx, Namespace::TypeNS);
// We need to add synthesized lifetimes where appropriate. We do
// this by hooking into the pretty printer and telling it to label the
@ -504,15 +503,13 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
}
}
let _ = ty.print(printer);
s
ty.print(printer).unwrap().into_buffer()
}
/// Returns the name of the provided `Ty` (that must be a reference)'s region with a
/// synthesized lifetime name where required.
pub(super) fn get_region_name_for_ty(&self, ty: Ty<'tcx>, counter: usize) -> String {
let mut s = String::new();
let mut printer = ty::print::FmtPrinter::new(self.infcx.tcx, &mut s, Namespace::TypeNS);
let mut printer = ty::print::FmtPrinter::new(self.infcx.tcx, Namespace::TypeNS);
let region = if let ty::Ref(region, ..) = ty.kind() {
match **region {
@ -527,8 +524,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
bug!("ty for annotation of borrow region is not a reference");
};
let _ = region.print(printer);
s
region.print(printer).unwrap().into_buffer()
}
}