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Improve comments in HIR lowering code

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This commit is contained in:
Jonas Schievink 2020-02-10 18:59:21 +01:00
parent b7fba973cb
commit 37b5bfce76
1 changed files with 3 additions and 2 deletions
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5
src/librustc_ast_lowering/expr.rs
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@ -561,7 +561,7 @@ pub(super) fn make_async_expr(
/// ::std::task::Poll::Ready(result) => break result,
/// ::std::task::Poll::Pending => {}
/// }
/// yield ();
/// task_context = yield ();
/// }
/// }
/// ```
@ -664,6 +664,7 @@ fn lower_expr_await(&mut self, await_span: Span, expr: &Expr) -> hir::ExprKind<'
self.stmt_expr(span, match_expr)
};
// task_context = yield ();
let yield_stmt = {
let unit = self.expr_unit(span);
let yield_expr = self.expr(
@ -687,7 +688,7 @@ fn lower_expr_await(&mut self, await_span: Span, expr: &Expr) -> hir::ExprKind<'
let loop_block = self.block_all(span, arena_vec![self; inner_match_stmt, yield_stmt], None);
// loop { ...; task_context = yield (); }
// loop { .. }
let loop_expr = self.arena.alloc(hir::Expr {
hir_id: loop_hir_id,
kind: hir::ExprKind::Loop(loop_block, None, hir::LoopSource::Loop),