new classes: no longer experimental.

src/full-codegen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/ast.h"
 #include "src/ast-numbering.h"
 #include "src/code-factory.h"
 #include "src/codegen.h"
@@ skipping 845 matching lines @@
     }
   }
 }
 
 
 void FullCodeGenerator::VisitSuperReference(SuperReference* super) {
   __ CallRuntime(Runtime::kThrowUnsupportedSuperError, 0);
 }
 
 
+bool FullCodeGenerator::ValidateSuperCall(Call* expr) {
+  Variable* new_target_var = scope()->DeclarationScope()->new_target_var();
+  if (new_target_var == nullptr) {
+    // TODO(dslomov): this is not exactly correct, the spec requires us
+    // to execute the constructor and only fail when an assigment to 'this'
+    // is attempted. Will implement once we have general new.target support,
+    // but also filed spec bug 3843 to make it an early error.
+    __ CallRuntime(Runtime::kThrowUnsupportedSuperError, 0);
+    RecordJSReturnSite(expr);
+    context()->Plug(result_register());
+    return false;
+  }
+  return true;
+}
+
+
 void FullCodeGenerator::SetExpressionPosition(Expression* expr) {
   if (!info_->is_debug()) {
     CodeGenerator::RecordPositions(masm_, expr->position());
   } else {
     // Check if the expression will be breakable without adding a debug break
     // slot.
     BreakableStatementChecker checker(info_->isolate(), zone());
     checker.Check(expr);
     // Record a statement position right here if the expression is not
     // breakable. For breakable expressions the actual recording of the
@@ skipping 953 matching lines @@
   }
   codegen_->PrepareForBailoutForId(exit_id_, NO_REGISTERS);
   codegen_->scope_ = saved_scope_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal