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Auto merge of #78779 - LeSeulArtichaut:ty-visitor-return, r=oli-obk

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Introduce `TypeVisitor::BreakTy`

Implements MCP rust-lang/compiler-team#383.
r? `@ghost`
cc `@lcnr` `@oli-obk`

~~Blocked on FCP in rust-lang/compiler-team#383.~~
This commit is contained in:
bors 2020-11-17 12:24:34 +00:00
commit e0ef0fc392
32 changed files with 232 additions and 213 deletions
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2
compiler/rustc_middle/src/ty/mod.rs
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@ -1849,7 +1849,7 @@ impl<'tcx> TypeFoldable<'tcx> for ParamEnv<'tcx> {
ParamEnv::new(self.caller_bounds().fold_with(folder), self.reveal().fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.caller_bounds().visit_with(visitor)?;
self.reveal().visit_with(visitor)
}