From 59b75a0c3b934cd1e886b3d55c47b314661dc334 Mon Sep 17 00:00:00 2001
From: Steve Baer <steve@mcneel.com>
Date: Thu, 7 Sep 2023 17:57:58 -0700
Subject: [PATCH] add indexer support

---
 src/Parse/ParsedMember.cs     | 21 +++++++++++++++++++++
 src/Parse/SourceFileWalker.cs |  7 +++++++
 2 files changed, 28 insertions(+)

diff --git a/src/Parse/ParsedMember.cs b/src/Parse/ParsedMember.cs
index 20e79fe4..5cae9faa 100644
--- a/src/Parse/ParsedMember.cs
+++ b/src/Parse/ParsedMember.cs
@@ -425,6 +425,27 @@ public string Signature(bool forSorting)
                     return signature;
                 }
             }
+            {
+                IndexerDeclarationSyntax indexerMember = Member as IndexerDeclarationSyntax;
+                if (indexerMember != null)
+                {
+                    var signature = new System.Text.StringBuilder();
+                    if (forSorting)
+                    {
+                        signature.Append($"{ClassPath}.this[{indexerMember.ParameterList.Parameters[0]}]");
+                    }
+                    else
+                    {
+                        string proptype = $"{indexerMember.Type}";
+                        int index = proptype.LastIndexOf('.');
+                        if (index > 0)
+                            proptype = proptype.Substring(index + 1);
+                        signature.Append($"{prefix}{proptype} this[{indexerMember.ParameterList.Parameters[0]}]");
+                    }
+                    return signature.ToString();
+
+                }
+            }
             throw new NotImplementedException();
         }
 
diff --git a/src/Parse/SourceFileWalker.cs b/src/Parse/SourceFileWalker.cs
index a3698624..58430494 100644
--- a/src/Parse/SourceFileWalker.cs
+++ b/src/Parse/SourceFileWalker.cs
@@ -76,6 +76,13 @@ public override void VisitMethodDeclaration(MethodDeclarationSyntax node)
             base.VisitMethodDeclaration(node);
         }
 
+        public override void VisitIndexerDeclaration(IndexerDeclarationSyntax node)
+        {
+            var docComment = node.GetLeadingTrivia().Select(i => i.GetStructure()).OfType<DocumentationCommentTriviaSyntax>().FirstOrDefault();
+            _parsedMembers.Add(new ParsedMember(node, docComment, _usingDirectives));
+            base.VisitIndexerDeclaration(node);
+        }
+
         public override void VisitPropertyDeclaration(PropertyDeclarationSyntax node)
         {
             var docComment = node.GetLeadingTrivia().Select(i => i.GetStructure()).OfType<DocumentationCommentTriviaSyntax>().FirstOrDefault();