Evaluate expression before NSM

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/ast_transformer.h"
 #include "vm/bootstrap.h"
@@ skipping 10309 matching lines @@
       target_cls = &Class::Handle(Z,
           original->AsLoadStaticFieldNode()->field().owner());
     } else if ((left_ident != NULL) &&
                (original->IsLiteralNode() ||
                 original->IsLoadLocalNode())) {
       name = left_ident->raw();
     }
     if (name.IsNull()) {
       ReportError(left_pos, "expression is not assignable");
     }
-    result = ThrowNoSuchMethodError(
-        original->token_pos(),
-        *target_cls,
-        String::Handle(Z, Field::SetterName(name)),
-        NULL,  // No arguments.
-        InvocationMirror::kStatic,
-        original->IsLoadLocalNode() ?
-            InvocationMirror::kLocalVar : InvocationMirror::kSetter,
-        NULL);  // No existing function.
+    LetNode* let_node = new(Z) LetNode(left_pos);
+    let_node->AddInitializer(rhs);
+    let_node->AddNode(ThrowNoSuchMethodError(
+         original->token_pos(),
+         *target_cls,
+         String::Handle(Z, Field::SetterName(name)),
+         NULL,  // No arguments.
+         InvocationMirror::kStatic,
+         original->IsLoadLocalNode() ?
+         InvocationMirror::kLocalVar : InvocationMirror::kSetter,
+         NULL));  // No existing function.
+    result = let_node;
   } else if (result->IsStoreIndexedNode() ||
              result->IsInstanceSetterNode() ||
              result->IsStaticSetterNode() ||
              result->IsStoreStaticFieldNode() ||
              result->IsStoreLocalNode()) {
     // Ensure that the expression temp is allocated for nodes that may need it.
     EnsureExpressionTemp();
   }
   return result;
 }
@@ skipping 3047 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart