Adding link from member to type

crates/solidity/inputs/language/bindings/rules.msgb

@@ -2087,13 +2087,21 @@ inherit .star_extension
   edge minmax_replace -> @enum.lexical_scope
 }
 
-@enum [EnumDefinition
+@enum [EnumDefinition @name name: [Identifier]
     members: [EnumMembers @item [Identifier]]
 ] {
   node def
   attr (def) node_definition = @item
   attr (def) definiens_node = @item
 
+  node type_of
+  attr (type_of) push_symbol = "@typeof"
+  node type_def
+  attr (type_def) push_symbol =  (source-text @name)
+  edge def -> type_of
+  edge type_of -> type_def
+  edge type_def -> @enum.lexical_scope
+
   edge @enum.members -> def
 }
 

crates/solidity/testing/snapshots/bindings_output/using/binding_enum_member/generated/0.4.11-failure.txt

@@ -0,0 +1,13 @@
+# This file is generated automatically by infrastructure scripts. Please don't edit by hand.
+
+Parse errors:
+Error: Expected ContractKeyword or ImportKeyword or InterfaceKeyword or LibraryKeyword or PragmaKeyword.
+    ╭─[input.sol:1:1]
+    │
+  1 │ ╭─▶ enum Answer {
+    ┆ ┆   
+ 17 │ ├─▶ }
+    │ │       
+    │ ╰─────── Error occurred here.
+────╯
+References and definitions: 

crates/solidity/testing/snapshots/bindings_output/using/binding_enum_member/generated/0.6.0-success.txt

@@ -0,0 +1,50 @@
+# This file is generated automatically by infrastructure scripts. Please don't edit by hand.
+
+References and definitions: 
+    ╭─[input.sol:1:1]
+    │
+  1 │ enum Answer {
+    │      ───┬──  
+    │         ╰──── def: 1
+  2 │   Yes
+    │   ─┬─  
+    │    ╰─── def: 2
+    │ 
+  5 │ library Id {
+    │         ─┬  
+    │          ╰── def: 3
+  6 │   function id(Answer ans) returns (Answer) {
+    │            ─┬ ───┬── ─┬─           ───┬──  
+    │             ╰────────────────────────────── def: 4
+    │                  │    │               │    
+    │                  ╰───────────────────────── ref: 1
+    │                       │               │    
+    │                       ╰──────────────────── def: 5
+    │                                       │    
+    │                                       ╰──── ref: 1
+  7 │     return ans;
+    │            ─┬─  
+    │             ╰─── ref: 5
+    │ 
+ 11 │ contract Test {
+    │          ──┬─  
+    │            ╰─── def: 6
+ 12 │   using Id for Answer;
+    │         ─┬     ───┬──  
+    │          ╰───────────── ref: 3
+    │                   │    
+    │                   ╰──── ref: 1
+    │ 
+ 14 │   function testFunc() returns (Answer) {
+    │            ────┬───            ───┬──  
+    │                ╰─────────────────────── def: 7
+    │                                   │    
+    │                                   ╰──── ref: 1
+ 15 │     Answer.Yes.id();
+    │     ───┬── ─┬─ ─┬  
+    │        ╰─────────── ref: 1
+    │             │   │  
+    │             ╰────── ref: 2
+    │                 │  
+    │                 ╰── ref: 4
+────╯

crates/solidity/testing/snapshots/bindings_output/using/binding_enum_member/input.sol

@@ -0,0 +1,17 @@
+enum Answer {
+  Yes
+}
+
+library Id {
+  function id(Answer ans) returns (Answer) {
+    return ans;
+  }
+}
+
+contract Test {
+  using Id for Answer;
+
+  function testFunc() returns (Answer) {
+    Answer.Yes.id();
+  }
+}