[vala/wip/printer: 3/6] vala: Add CodeNode reference to SourceReference

[Rico Tzschichholz <ricotz src gnome org>]

commit 1a3f054ec71ebfc67bdde5fb612929eae1ff06f0
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Apr 8 16:43:03 2020 +0200

    vala: Add CodeNode reference to SourceReference

 vala/valacodenode.vala        | 14 +++++++++++++-
 vala/valasourcereference.vala |  5 +++++
 2 files changed, 18 insertions(+), 1 deletion(-)
---
diff --git a/vala/valacodenode.vala b/vala/valacodenode.vala
index 05ba53a0a..21dca7c88 100644
--- a/vala/valacodenode.vala
+++ b/vala/valacodenode.vala
@@ -38,7 +38,18 @@ public abstract class Vala.CodeNode {
         * References the location in the source file where this code node has
         * been written.
         */
-       public SourceReference? source_reference { get; set; }
+       public SourceReference? source_reference {
+               get {
+                       return _source_reference;
+               }
+               set {
+                       _source_reference = value;
+                       // source references are re-used in transformed nodes, keep original node reference
+                       if (_source_reference != null && _source_reference.node == null) {
+                               _source_reference.node = this;
+                       }
+               }
+       }
 
        public bool unreachable { get; set; }
 
@@ -70,6 +81,7 @@ public abstract class Vala.CodeNode {
        }
 
        private AttributeCache[] attributes_cache;
+       SourceReference? _source_reference;
 
        static int last_temp_nr = 0;
        static int next_attribute_cache_index = 0;
diff --git a/vala/valasourcereference.vala b/vala/valasourcereference.vala
index d0680f705..be79e197e 100644
--- a/vala/valasourcereference.vala
+++ b/vala/valasourcereference.vala
@@ -31,6 +31,11 @@ public class Vala.SourceReference {
         */
        public weak SourceFile file { get; set; }
 
+       /**
+        * The code node of the referenced source code.
+        */
+       public weak CodeNode? node { get; set; }
+
        /**
         * The begin of the referenced source code.
         */