Implement canonical name scheme in kernel.

pkg/kernel/lib/clone.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 library kernel.clone;
 
 import 'ast.dart';
 import 'type_algebra.dart';
 
 /// Visitor that return a clone of a tree, maintaining references to cloned
 /// objects.
@@ skipping 50 matching lines @@
   visitVariableGet(VariableGet node) {
     return new VariableGet(
         variables[node.variable], visitOptionalType(node.promotedType));
   }
 
   visitVariableSet(VariableSet node) {
     return new VariableSet(variables[node.variable], clone(node.value));
   }
 
   visitPropertyGet(PropertyGet node) {
-    return new PropertyGet(
-        clone(node.receiver), node.name, node.interfaceTarget);
+    return new PropertyGet.byReference(
+        clone(node.receiver), node.name, node.interfaceTargetReference);
   }
 
   visitPropertySet(PropertySet node) {
-    return new PropertySet(clone(node.receiver), node.name, clone(node.value),
-        node.interfaceTarget);
+    return new PropertySet.byReference(clone(node.receiver), node.name,
+        clone(node.value), node.interfaceTargetReference);
   }
 
   visitDirectPropertyGet(DirectPropertyGet node) {
-    return new DirectPropertyGet(clone(node.receiver), node.target);
+    return new DirectPropertyGet.byReference(
+        clone(node.receiver), node.targetReference);
   }
 
   visitDirectPropertySet(DirectPropertySet node) {
-    return new DirectPropertySet(
-        clone(node.receiver), node.target, clone(node.value));
+    return new DirectPropertySet.byReference(
+        clone(node.receiver), node.targetReference, clone(node.value));
   }
 
   visitSuperPropertyGet(SuperPropertyGet node) {
-    return new SuperPropertyGet(node.name, node.interfaceTarget);
+    return new SuperPropertyGet.byReference(
+        node.name, node.interfaceTargetReference);
   }
 
   visitSuperPropertySet(SuperPropertySet node) {
-    return new SuperPropertySet(
-        node.name, clone(node.value), node.interfaceTarget);
+    return new SuperPropertySet.byReference(
+        node.name, clone(node.value), node.interfaceTargetReference);
   }
 
   visitStaticGet(StaticGet node) {
-    return new StaticGet(node.target);
+    return new StaticGet.byReference(node.targetReference);
   }
 
   visitStaticSet(StaticSet node) {
-    return new StaticSet(node.target, clone(node.value));
+    return new StaticSet.byReference(node.targetReference, clone(node.value));
   }
 
   visitMethodInvocation(MethodInvocation node) {
-    return new MethodInvocation(clone(node.receiver), node.name,
-        clone(node.arguments), node.interfaceTarget);
+    return new MethodInvocation.byReference(clone(node.receiver), node.name,
+        clone(node.arguments), node.interfaceTargetReference);
   }
 
   visitDirectMethodInvocation(DirectMethodInvocation node) {
-    return new DirectMethodInvocation(
-        clone(node.receiver), node.target, clone(node.arguments));
+    return new DirectMethodInvocation.byReference(
+        clone(node.receiver), node.targetReference, clone(node.arguments));
   }
 
   visitSuperMethodInvocation(SuperMethodInvocation node) {
-    return new SuperMethodInvocation(
-        node.name, clone(node.arguments), node.interfaceTarget);
+    return new SuperMethodInvocation.byReference(
+        node.name, clone(node.arguments), node.interfaceTargetReference);
   }
 
   visitStaticInvocation(StaticInvocation node) {
-    return new StaticInvocation(node.target, clone(node.arguments),
+    return new StaticInvocation.byReference(
+        node.targetReference, clone(node.arguments),
         isConst: node.isConst);
   }
 
   visitConstructorInvocation(ConstructorInvocation node) {
-    return new ConstructorInvocation(node.target, clone(node.arguments),
+    return new ConstructorInvocation.byReference(
+        node.targetReference, clone(node.arguments),
         isConst: node.isConst);
   }
 
   visitNot(Not node) {
     return new Not(clone(node.operand));
   }
 
   visitLogicalExpression(LogicalExpression node) {
     return new LogicalExpression(
         clone(node.left), node.operator, clone(node.right));
@@ skipping 257 matching lines @@
   visitArguments(Arguments node) {
     return new Arguments(node.positional.map(clone).toList(),
         types: node.types.map(visitType).toList(),
         named: node.named.map(clone).toList());
   }
 
   visitNamedExpression(NamedExpression node) {
     return new NamedExpression(node.name, clone(node.value));
   }
 }