[Interpreter] Add support for new local function context creation.

src/interpreter/bytecode-generator.h

 // 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"
@@ skipping 10 matching lines @@
   Handle<BytecodeArray> MakeBytecode(CompilationInfo* info);
 
 #define DECLARE_VISIT(type) void Visit##type(type* node) override;
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   // Visiting function for declarations list is overridden.
   void VisitDeclarations(ZoneList<Declaration*>* declarations) override;
 
  private:
+  class ContextScope;
   class ControlScope;
   class ControlScopeForIteration;
 
+  void MakeBytecodeBody();
+
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
 
   void VisitArithmeticExpression(BinaryOperation* binop);
   void VisitPropertyLoad(Register obj, Property* expr);
   void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot);
   void VisitVariableAssignment(Variable* variable, FeedbackVectorSlot slot);
+  void VisitNewLocalFunctionContext();
 
   // Dispatched from VisitUnaryOperation.
   void VisitVoid(UnaryOperation* expr);
   void VisitTypeOf(UnaryOperation* expr);
   void VisitNot(UnaryOperation* expr);
 
   inline BytecodeArrayBuilder* builder() { return &builder_; }
+
   inline Scope* scope() const { return scope_; }
   inline void set_scope(Scope* scope) { scope_ = scope; }
+  inline CompilationInfo* info() const { return info_; }
+  inline void set_info(CompilationInfo* info) { info_ = info; }
+
   inline ControlScope* control_scope() const { return control_scope_; }
   inline void set_control_scope(ControlScope* scope) { control_scope_ = scope; }
-  inline CompilationInfo* info() const { return info_; }
-  inline void set_info(CompilationInfo* info) { info_ = info; }
+  inline Register current_context() const { return current_context_; }
+  inline void set_current_context(Register context) {
+    current_context_ = context;
+  }
+
   ZoneVector<Handle<Object>>* globals() { return &globals_; }
-
-  LanguageMode language_mode() const;
+  inline LanguageMode language_mode() const;
   Strength language_mode_strength() const;
   int feedback_index(FeedbackVectorSlot slot) const;
-  Register current_context() const;
 
   BytecodeArrayBuilder builder_;
   CompilationInfo* info_;
   Scope* scope_;
   ZoneVector<Handle<Object>> globals_;
   ControlScope* control_scope_;
 
-  // TODO(rmcilroy): Encapsulate this in an environment object.
   Register current_context_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_