[Interpreter] Minimal bytecode generator.

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
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+// 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_INTERPRETER_BYTECODE_GENERATOR_H_
+#define V8_INTERPRETER_BYTECODE_GENERATOR_H_
+
+#include "src/ast.h"
+#include "src/interpreter/bytecode-array-builder.h"
+#include "src/interpreter/bytecodes.h"
+
+namespace v8 {
+namespace internal {
+namespace interpreter {
+
+class BytecodeGenerator : public AstVisitor {
+ public:
+  BytecodeGenerator(Isolate* isolate, Zone* zone);
+  virtual ~BytecodeGenerator();
+
+  Handle<BytecodeArray> MakeBytecode(CompilationInfo* info);
+
+#define DECLARE_VISIT(type) void Visit##type(type* node) override;
+  AST_NODE_LIST(DECLARE_VISIT)
+#undef DECLARE_VISIT
+
+ private:
+  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+
+  void VisitArithmeticExpression(BinaryOperation* binop);
+
+  inline BytecodeArrayBuilder& builder() { return builder_; }
+  inline Scope* scope() const { return scope_; }
+  inline void set_scope(Scope* s) { scope_ = s; }
+
+  BytecodeArrayBuilder builder_;
+  Scope* scope_;
+};
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_