Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/ast/ast-expression-visitor.h b/src/ast/ast-expression-visitor.h
new file mode 100644
index 0000000..cda624d
--- /dev/null
+++ b/src/ast/ast-expression-visitor.h
@@ -0,0 +1,50 @@
+// Copyright 2015 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.
+
+#ifndef V8_AST_AST_EXPRESSION_VISITOR_H_
+#define V8_AST_AST_EXPRESSION_VISITOR_H_
+
+#include "src/allocation.h"
+#include "src/ast/ast.h"
+#include "src/ast/scopes.h"
+#include "src/effects.h"
+#include "src/type-info.h"
+#include "src/types.h"
+#include "src/zone.h"
+
+namespace v8 {
+namespace internal {
+
+// A Visitor over a CompilationInfo's AST that invokes
+// VisitExpression on each expression node.
+
+class AstExpressionVisitor : public AstVisitor {
+ public:
+ AstExpressionVisitor(Isolate* isolate, Expression* root);
+ AstExpressionVisitor(uintptr_t stack_limit, Expression* root);
+ void Run();
+
+ protected:
+ virtual void VisitExpression(Expression* expression) = 0;
+ int depth() { return depth_; }
+
+ private:
+ void VisitDeclarations(ZoneList<Declaration*>* d) override;
+ void VisitStatements(ZoneList<Statement*>* s) override;
+
+ DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+
+#define DECLARE_VISIT(type) void Visit##type(type* node) override;
+ AST_NODE_LIST(DECLARE_VISIT)
+#undef DECLARE_VISIT
+
+ Expression* root_;
+ int depth_;
+
+ DISALLOW_COPY_AND_ASSIGN(AstExpressionVisitor);
+};
+} // namespace internal
+} // namespace v8
+
+#endif // V8_AST_AST_EXPRESSION_VISITOR_H_