Keep a parent LocalDefId in SpanData.

Author: cjgillot

src/macros.rs

@@ -1270,7 +1270,12 @@ impl MacroParser {
                 let data = delimited_span.entire().data();
                 (
                     data.hi,
-                    Span::new(data.lo + BytePos(1), data.hi - BytePos(1), data.ctxt),
+                    Span::new(
+                        data.lo + BytePos(1),
+                        data.hi - BytePos(1),
+                        data.ctxt,
+                        data.parent,
+                    ),
                     delimited_span.entire(),
                 )
             }

src/utils.rs

@@ -356,11 +356,11 @@ macro_rules! source {
 }
 
 pub(crate) fn mk_sp(lo: BytePos, hi: BytePos) -> Span {
-    Span::new(lo, hi, SyntaxContext::root())
+    Span::new(lo, hi, SyntaxContext::root(), None)
 }
 
 pub(crate) fn mk_sp_lo_plus_one(lo: BytePos) -> Span {
-    Span::new(lo, lo + BytePos(1), SyntaxContext::root())
+    Span::new(lo, lo + BytePos(1), SyntaxContext::root(), None)
 }
 
 // Returns `true` if the given span does not intersect with file lines.