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| author | Camille GILLOT <gillot.camille@gmail.com> | 2021-04-18 21:28:23 +0200 |
|---|---|---|
| committer | Camille GILLOT <gillot.camille@gmail.com> | 2021-09-10 20:18:36 +0200 |
| commit | f84856cbb0bcba3fae1a74a7e913e1a42d7144f0 (patch) | |
| tree | 4b8dacedfd9944ab86052327b2a4345ccad20402 /compiler/rustc_ast_lowering/src/lib.rs | |
| parent | 6f782c4e114c2913d5f3e8034664852e7b36452a (diff) | |
| download | rust-f84856cbb0bcba3fae1a74a7e913e1a42d7144f0.tar.gz rust-f84856cbb0bcba3fae1a74a7e913e1a42d7144f0.zip | |
Give spans their parent item during lowering.
We only do this operation when incremental compilation is enabled. This avoids pessimizing the span handling for non-incremental compilation.
Diffstat (limited to 'compiler/rustc_ast_lowering/src/lib.rs')
| -rw-r--r-- | compiler/rustc_ast_lowering/src/lib.rs | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index 9edc30ceb19..8d731d7a578 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -718,9 +718,14 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { } /// Intercept all spans entering HIR. - /// For now we are not doing anything with the intercepted spans. + /// Mark a span as relative to the current owning item. fn lower_span(&self, span: Span) -> Span { - span + if self.sess.opts.debugging_opts.incremental_relative_spans { + span.with_parent(Some(self.current_hir_id_owner.0)) + } else { + // Do not make spans relative when not using incremental compilation. + span + } } fn lower_ident(&self, ident: Ident) -> Ident { |