Refactor index operator in SimpleTypeInferrer.

pkg/compiler/lib/src/resolution/send_structure.dart

Index: pkg/compiler/lib/src/resolution/send_structure.dart
diff --git a/pkg/compiler/lib/src/resolution/send_structure.dart b/pkg/compiler/lib/src/resolution/send_structure.dart
index 475451f23fa7a9a8a52ac5e9134899b2442e7443..c34a6a6ec2ea38bf755931b6e7caaaf994971487 100644
--- a/pkg/compiler/lib/src/resolution/send_structure.dart
+++ b/pkg/compiler/lib/src/resolution/send_structure.dart
@@ -1019,8 +1019,7 @@ class IndexSetStructure<R, A> implements SendStructure<R, A> {
             arg);
       case AccessKind.UNRESOLVED_SUPER:
       case AccessKind.UNRESOLVED:
-        // TODO(johnniwinther): Support these through [AccessKind.COMPOUND].
-        return visitor.errorUnresolvedSuperIndexSet(
+        return visitor.visitUnresolvedSuperIndexSet(
             node,
             semantics.element,
             node.arguments.first,
@@ -1068,15 +1067,6 @@ class IndexPrefixStructure<R, A> implements SendStructure<R, A> {
             node.arguments.single,
             operator,
             arg);
-      case AccessKind.UNRESOLVED_SUPER:
-      case AccessKind.UNRESOLVED:
-        // TODO(johnniwinther): Support these through [AccessKind.COMPOUND].
-        return visitor.errorUnresolvedSuperIndexPrefix(
-            node,
-            semantics.element,
-            node.arguments.single,
-            operator,
-            arg);
       case AccessKind.COMPOUND:
         CompoundAccessSemantics compoundSemantics = semantics;
         switch (compoundSemantics.compoundAccessKind) {
@@ -1088,6 +1078,21 @@ class IndexPrefixStructure<R, A> implements SendStructure<R, A> {
                 node.arguments.single,
                 operator,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+            return visitor.visitUnresolvedSuperGetterIndexPrefix(
+                node,
+                compoundSemantics.getter,
+                node.arguments.single,
+                operator,
+                arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            return visitor.visitUnresolvedSuperSetterIndexPrefix(
+                node,
+                compoundSemantics.getter,
+                compoundSemantics.setter,
+                node.arguments.single,
+                operator,
+                arg);
           default:
             // This is not a valid case.
             break;
@@ -1133,15 +1138,6 @@ class IndexPostfixStructure<R, A> implements SendStructure<R, A> {
             node.arguments.single,
             operator,
             arg);
-      case AccessKind.UNRESOLVED_SUPER:
-      case AccessKind.UNRESOLVED:
-        // TODO(johnniwinther): Support these through [AccessKind.COMPOUND].
-        return visitor.errorUnresolvedSuperIndexPostfix(
-            node,
-            semantics.element,
-            node.arguments.single,
-            operator,
-            arg);
       case AccessKind.COMPOUND:
         CompoundAccessSemantics compoundSemantics = semantics;
         switch (compoundSemantics.compoundAccessKind) {
@@ -1153,6 +1149,21 @@ class IndexPostfixStructure<R, A> implements SendStructure<R, A> {
                 node.arguments.single,
                 operator,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+            return visitor.visitUnresolvedSuperGetterIndexPostfix(
+                node,
+                compoundSemantics.getter,
+                node.arguments.single,
+                operator,
+                arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            return visitor.visitUnresolvedSuperSetterIndexPostfix(
+                node,
+                compoundSemantics.getter,
+                compoundSemantics.setter,
+                node.arguments.single,
+                operator,
+                arg);
           default:
             // This is not a valid case.
             break;
@@ -1391,6 +1402,16 @@ class CompoundStructure<R, A> implements SendStructure<R, A> {
                 operator,
                 node.arguments.single,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            // TODO(johnniwinther): Handle these separately.
+            return visitor.errorUnresolvedCompound(
+                node,
+                semantics.element,
+                operator,
+                node.arguments.single,
+                arg);
+            break;
         }
         break;
     }
@@ -1430,16 +1451,6 @@ class CompoundIndexSetStructure<R, A> implements SendStructure<R, A> {
             operator,
             node.arguments.tail.head,
             arg);
-      case AccessKind.UNRESOLVED_SUPER:
-      case AccessKind.UNRESOLVED:
-        // TODO(johnniwinther): Support these through [AccessKind.COMPOUND].
-        return visitor.errorUnresolvedSuperCompoundIndexSet(
-            node,
-            semantics.element,
-            node.arguments.first,
-            operator,
-            node.arguments.tail.head,
-            arg);
       case AccessKind.COMPOUND:
         CompoundAccessSemantics compoundSemantics = semantics;
         switch (compoundSemantics.compoundAccessKind) {
@@ -1452,6 +1463,23 @@ class CompoundIndexSetStructure<R, A> implements SendStructure<R, A> {
                 operator,
                 node.arguments.tail.head,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+            return visitor.visitUnresolvedSuperGetterCompoundIndexSet(
+                node,
+                compoundSemantics.getter,
+                node.arguments.first,
+                operator,
+                node.arguments.tail.head,
+                arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            return visitor.visitUnresolvedSuperSetterCompoundIndexSet(
+                node,
+                compoundSemantics.getter,
+                compoundSemantics.setter,
+                node.arguments.first,
+                operator,
+                node.arguments.tail.head,
+                arg);
           default:
             // This is not a valid case.
             break;
@@ -1675,6 +1703,14 @@ class PrefixStructure<R, A> implements SendStructure<R, A> {
                 compoundSemantics.setter,
                 operator,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            // TODO(johnniwinther): Handle these directly.
+            return visitor.errorUnresolvedPrefix(
+                node,
+                semantics.element,
+                operator,
+                arg);
         }
     }
     throw new SpannableAssertionFailure(node,
@@ -1891,6 +1927,14 @@ class PostfixStructure<R, A> implements SendStructure<R, A> {
                 compoundSemantics.setter,
                 operator,
                 arg);
+          case CompoundAccessKind.UNRESOLVED_SUPER_GETTER:
+          case CompoundAccessKind.UNRESOLVED_SUPER_SETTER:
+            // TODO(johnniwinther): Handle these directly.
+            return visitor.errorUnresolvedPostfix(
+                node,
+                semantics.element,
+                operator,
+                arg);
         }
     }
     throw new SpannableAssertionFailure(node,