diff --git a/src/eval_visualization/eval_visualization_builtin_view_rules.c b/src/eval_visualization/eval_visualization_builtin_view_rules.c
index 2379124c..bda1f397 100644
--- a/src/eval_visualization/eval_visualization_builtin_view_rules.c
+++ b/src/eval_visualization/eval_visualization_builtin_view_rules.c
@@ -151,6 +151,13 @@ EV_VIEW_RULE_BLOCK_PROD_FUNCTION_DEF(default)
       EV_ViewRuleList *child_view_rules = ev_view_rule_list_from_inheritance(arena, view_rules);
       {
         String8 view_rule_string = ev_view_rule_from_key(view, child->key);
+        if(view_rule_string.size == 0)
+        {
+          Temp scratch = scratch_begin(&arena, 1);
+          E_IRTreeAndType irtree = e_irtree_and_type_from_expr(arena, child_expr);
+          view_rule_string = ev_auto_view_rule_from_type_key(irtree.type_key);
+          scratch_end(scratch);
+        }
         if(view_rule_string.size != 0)
         {
           ev_view_rule_list_push_string(arena, child_view_rules, view_rule_string);
@@ -219,6 +226,13 @@ EV_VIEW_RULE_BLOCK_PROD_FUNCTION_DEF(default)
       EV_ViewRuleList *child_view_rules = ev_view_rule_list_from_inheritance(arena, view_rules);
       {
         String8 view_rule_string = ev_view_rule_from_key(view, child->key);
+        if(view_rule_string.size == 0)
+        {
+          Temp scratch = scratch_begin(&arena, 1);
+          E_IRTreeAndType irtree = e_irtree_and_type_from_expr(arena, child_expr);
+          view_rule_string = ev_auto_view_rule_from_type_key(irtree.type_key);
+          scratch_end(scratch);
+        }
         if(view_rule_string.size != 0)
         {
           ev_view_rule_list_push_string(arena, child_view_rules, view_rule_string);
@@ -236,13 +250,21 @@ EV_VIEW_RULE_BLOCK_PROD_FUNCTION_DEF(default)
   //
   else if(e_type_kind_is_pointer_or_ref(type_kind) && e_type_kind_is_pointer_or_ref(direct_type_kind))
   {
-    // rjf: compute key
+    // rjf: compute key, compute expr
     EV_Key child_key = ev_key_make(ev_hash_from_key(key), 1);
+    E_Expr *child_expr = e_expr_ref_deref(arena, expr);
     
     // rjf: build child view rules
     EV_ViewRuleList *child_view_rules = ev_view_rule_list_from_inheritance(arena, view_rules);
     {
       String8 view_rule_string = ev_view_rule_from_key(view, child_key);
+      if(view_rule_string.size == 0)
+      {
+        Temp scratch = scratch_begin(&arena, 1);
+        E_IRTreeAndType irtree = e_irtree_and_type_from_expr(arena, child_expr);
+        view_rule_string = ev_auto_view_rule_from_type_key(irtree.type_key);
+        scratch_end(scratch);
+      }
       if(view_rule_string.size != 0)
       {
         ev_view_rule_list_push_string(arena, child_view_rules, view_rule_string);
@@ -250,7 +272,6 @@ EV_VIEW_RULE_BLOCK_PROD_FUNCTION_DEF(default)
     }
     
     // rjf: recurse for child
-    E_Expr *child_expr = e_expr_ref_deref(arena, expr);
     ev_append_expr_blocks__rec(arena, view, key, child_key, str8_zero(), child_expr, child_view_rules, depth, out);
   }
   
diff --git a/src/eval_visualization/eval_visualization_core.c b/src/eval_visualization/eval_visualization_core.c
index 8101f336..5a513df6 100644
--- a/src/eval_visualization/eval_visualization_core.c
+++ b/src/eval_visualization/eval_visualization_core.c
@@ -352,6 +352,67 @@ ev_view_rule_info_from_string(String8 string)
   return info;
 }
 
+////////////////////////////////
+//~ rjf: Automatic Type -> View Rule Table Building / Selection / Lookups
+
+internal void
+ev_auto_view_rule_table_push_new(Arena *arena, EV_AutoViewRuleTable *table, E_TypeKey type_key, String8 view_rule)
+{
+  if(table->slots_count == 0)
+  {
+    table->slots_count = 4096;
+    table->slots = push_array(arena, EV_AutoViewRuleSlot, table->slots_count);
+  }
+  U64 hash = e_hash_from_string(5381, str8_struct(&type_key));
+  U64 slot_idx = hash%ev_auto_view_rule_table->slots_count;
+  EV_AutoViewRuleSlot *slot = &ev_auto_view_rule_table->slots[slot_idx];
+  EV_AutoViewRuleNode *node = 0;
+  for(EV_AutoViewRuleNode *n = slot->first; n != 0; n = n->next)
+  {
+    if(e_type_match(n->key, type_key))
+    {
+      node = n;
+      break;
+    }
+  }
+  if(node == 0)
+  {
+    node = push_array(arena, EV_AutoViewRuleNode, 1);
+    node->key = type_key;
+    node->view_rule = push_str8_copy(arena, view_rule);
+    SLLQueuePush(slot->first, slot->last, node);
+  }
+}
+
+internal void
+ev_select_auto_view_rule_table(EV_AutoViewRuleTable *table)
+{
+  ev_auto_view_rule_table = table;
+}
+
+internal String8
+ev_auto_view_rule_from_type_key(E_TypeKey type_key)
+{
+  U64 hash = e_hash_from_string(5381, str8_struct(&type_key));
+  U64 slot_idx = hash%ev_auto_view_rule_table->slots_count;
+  EV_AutoViewRuleSlot *slot = &ev_auto_view_rule_table->slots[slot_idx];
+  EV_AutoViewRuleNode *node = 0;
+  for(EV_AutoViewRuleNode *n = slot->first; n != 0; n = n->next)
+  {
+    if(e_type_match(n->key, type_key))
+    {
+      node = n;
+      break;
+    }
+  }
+  String8 string = {0};
+  if(node != 0)
+  {
+    string = node->view_rule;
+  }
+  return string;
+}
+
 ////////////////////////////////
 //~ rjf: View Rule Instance List Building
 
@@ -562,6 +623,11 @@ ev_block_list_from_view_expr_keys(Arena *arena, EV_View *view, EV_ViewRuleList *
       }
     }
     String8 view_rule_string = ev_view_rule_from_key(view, key);
+    if(view_rule_string.size == 0)
+    {
+      E_IRTreeAndType irtree = e_irtree_and_type_from_expr(arena, parse.expr);
+      view_rule_string = ev_auto_view_rule_from_type_key(irtree.type_key);
+    }
     EV_ViewRuleList *view_rule_list = ev_view_rule_list_copy(arena, view_rules);
     for(String8Node *n = default_view_rules.first; n != 0; n = n->next)
     {
@@ -849,6 +915,13 @@ ev_row_list_push_new(Arena *arena, EV_View *view, EV_WindowedRowList *rows, EV_B
     {
       view_rules = ev_view_rule_list_from_inheritance(arena, block->view_rules);
       String8 row_view_rules = ev_view_rule_from_key(view, key);
+      if(row_view_rules.size == 0)
+      {
+        Temp scratch = scratch_begin(&arena, 1);
+        E_IRTreeAndType irtree = e_irtree_and_type_from_expr(arena, expr);
+        row_view_rules = ev_auto_view_rule_from_type_key(irtree.type_key);
+        scratch_end(scratch);
+      }
       if(row_view_rules.size != 0)
       {
         ev_view_rule_list_push_string(arena, view_rules, row_view_rules);
diff --git a/src/eval_visualization/eval_visualization_core.h b/src/eval_visualization/eval_visualization_core.h
index 63189c18..cff14315 100644
--- a/src/eval_visualization/eval_visualization_core.h
+++ b/src/eval_visualization/eval_visualization_core.h
@@ -224,6 +224,32 @@ struct EV_ViewRuleInfoTable
   U64 slots_count;
 };
 
+////////////////////////////////
+//~ rjf: Automatic Type -> View Rule Map Types
+
+typedef struct EV_AutoViewRuleNode EV_AutoViewRuleNode;
+struct EV_AutoViewRuleNode
+{
+  EV_AutoViewRuleNode *next;
+  E_TypeKey key;
+  String8 view_rule;
+};
+
+typedef struct EV_AutoViewRuleSlot EV_AutoViewRuleSlot;
+struct EV_AutoViewRuleSlot
+{
+  EV_AutoViewRuleNode *first;
+  EV_AutoViewRuleNode *last;
+  U64 count;
+};
+
+typedef struct EV_AutoViewRuleTable EV_AutoViewRuleTable;
+struct EV_AutoViewRuleTable
+{
+  EV_AutoViewRuleSlot *slots;
+  U64 slots_count;
+};
+
 ////////////////////////////////
 //~ rjf: Generated Code
 
@@ -279,6 +305,7 @@ struct EV_WindowedRowList
 global read_only EV_ViewRuleInfo ev_nil_view_rule_info = {0};
 thread_static EV_ViewRuleInfoTable *ev_view_rule_info_table = 0;
 global read_only EV_ViewRuleList ev_nil_view_rule_list = {0};
+thread_static EV_AutoViewRuleTable *ev_auto_view_rule_table = 0;
 
 ////////////////////////////////
 //~ rjf: Key Functions
@@ -318,6 +345,13 @@ internal void ev_view_rule_info_table_push_builtins(Arena *arena, EV_ViewRuleInf
 internal void ev_select_view_rule_info_table(EV_ViewRuleInfoTable *table);
 internal EV_ViewRuleInfo *ev_view_rule_info_from_string(String8 string);
 
+////////////////////////////////
+//~ rjf: Automatic Type -> View Rule Table Building / Selection / Lookups
+
+internal void ev_auto_view_rule_table_push_new(Arena *arena, EV_AutoViewRuleTable *table, E_TypeKey type_key, String8 view_rule);
+internal void ev_select_auto_view_rule_table(EV_AutoViewRuleTable *table);
+internal String8 ev_auto_view_rule_from_type_key(E_TypeKey type_key);
+
 ////////////////////////////////
 //~ rjf: View Rule Instance List Building