From 5c76f35bb793cd58fa7cf4729db840f217c3521f Mon Sep 17 00:00:00 2001
From: Benjamin Popp <haven1433@gmail.com>
Date: Wed, 14 Apr 2021 20:36:24 -0500
Subject: [PATCH] Provide custom headers for anchors that are pointed to by
 named tables

---
 src/HexManiac.Core/Models/PokemonModel.cs | 24 +++++++++++++++++------
 src/HexManiac.Tests/TableTests.cs         | 11 ++++++++++-
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/src/HexManiac.Core/Models/PokemonModel.cs b/src/HexManiac.Core/Models/PokemonModel.cs
index d7dc0a97..31856313 100644
--- a/src/HexManiac.Core/Models/PokemonModel.cs
+++ b/src/HexManiac.Core/Models/PokemonModel.cs
@@ -767,14 +767,26 @@ namespace HavenSoft.HexManiac.Core.Models {
          // only produce headers for arrays with length based on other arrays that start with a text member.
          var run = GetNextRun(address);
          if (run.Start > address) return false;
-         if (!(run is ArrayRun array)) return false;
+         if (!(run is ArrayRun array)) {
+            if (run.PointerSources != null && run.PointerSources.Count > 0 && run.Start == address) {
+               var parentRun = GetNextRun(run.PointerSources[0]);
+               if (parentRun is ArrayRun parentArray) {
+                  array = parentArray;
+                  var arrayIndex = parentArray.ConvertByteOffsetToArrayOffset(run.PointerSources[0]).ElementIndex;
+                  address = parentArray.Start + arrayIndex * parentArray.ElementLength;
+               } else {
+                  return false;
+               }
+            } else {
+               return false;
+            }
+         }
+
          if ((address - array.Start) % array.ElementLength != 0) return false;
 
-         using (ModelCacheScope.CreateScope(this)) {
-            var index = (address - array.Start) / array.ElementLength;
-            if (array.ElementNames.Count <= index) return false;
-            header = array.ElementNames[index];
-         }
+         var index = (address - array.Start) / array.ElementLength;
+         if (array.ElementNames.Count <= index) return false;
+         header = array.ElementNames[index];
 
          return true;
       }
diff --git a/src/HexManiac.Tests/TableTests.cs b/src/HexManiac.Tests/TableTests.cs
index 247d2098..4cec8d29 100644
--- a/src/HexManiac.Tests/TableTests.cs
+++ b/src/HexManiac.Tests/TableTests.cs
@@ -632,7 +632,6 @@ namespace HavenSoft.HexManiac.Tests {
          Assert.Equal(1, table.ElementCount);
       }
 
-
       [Fact]
       public void TableWithNegativeOffset_ShrinkAndGrowParent_ChildLengthRestored() {
          CreateTextTable("names", 0, "adam", "bob", "carl", "dave");
@@ -661,6 +660,16 @@ namespace HavenSoft.HexManiac.Tests {
          Assert.Equal(12, Model.ReadMultiByteValue(4, 2));
       }
 
+      [Fact]
+      public void PointerTable_RequestHeaderForDestination_GetTableIndexName() {
+         Model.SetList("options", new[] { "Adam", "Bob", "Carl", "Dave" });
+         ViewPort.Edit("^table[entry<>]options <100> <120> <140> <160>");
+
+         Model.TryGetUsefulHeader(0x120, out var header);
+
+         Assert.Equal("Bob", header);
+      }
+
       private void ArrangeTrainerPokemonTeamData(byte structType, byte pokemonCount, int trainerCount) {
          CreateTextTable(HardcodeTablesModel.PokemonNameTable, 0x180, "ABCDEFGHIJKLMNOP".Select(c => c.ToString()).ToArray());
          CreateTextTable(HardcodeTablesModel.MoveNamesTable, 0x1B0, "qrstuvwxyz".Select(c => c.ToString()).ToArray());