new classes: special construct stub for derived classs and TDZ for `this`.

src/parser.h

 // 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.
 
 #ifndef V8_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // For CachedDataMode
@@ skipping 545 matching lines @@
   Expression* GetIterator(Expression* iterable, AstNodeFactory* factory);
   ZoneList<v8::internal::Expression*>* NewExpressionList(int size, Zone* zone) {
     return new(zone) ZoneList<v8::internal::Expression*>(size, zone);
   }
   ZoneList<ObjectLiteral::Property*>* NewPropertyList(int size, Zone* zone) {
     return new(zone) ZoneList<ObjectLiteral::Property*>(size, zone);
   }
   ZoneList<v8::internal::Statement*>* NewStatementList(int size, Zone* zone) {
     return new(zone) ZoneList<v8::internal::Statement*>(size, zone);
   }
-  V8_INLINE Scope* NewScope(Scope* parent_scope, ScopeType scope_type);
+  V8_INLINE Scope* NewScope(Scope* parent_scope, ScopeType scope_type,
+                            FunctionKind kind = kNormalFunction);
 
   // Utility functions
   int DeclareArrowParametersFromExpression(Expression* expression, Scope* scope,
                                            Scanner::Location* dupe_loc,
                                            bool* ok);
   V8_INLINE AstValueFactory* ast_value_factory();
 
   // Temporary glue; these functions will move to ParserBase.
   Expression* ParseV8Intrinsic(bool* ok);
   FunctionLiteral* ParseFunctionLiteral(
@@ skipping 268 matching lines @@
                                VariableMode mode,
                                Interface* interface);
   void Declare(Declaration* declaration, bool resolve, bool* ok);
 
   bool TargetStackContainsLabel(const AstRawString* label);
   BreakableStatement* LookupBreakTarget(const AstRawString* label, bool* ok);
   IterationStatement* LookupContinueTarget(const AstRawString* label, bool* ok);
 
   // Factory methods.
 
-  Scope* NewScope(Scope* parent, ScopeType type);
+  Scope* NewScope(Scope* parent, ScopeType type,
+                  FunctionKind kind = kNormalFunction);
 
   FunctionLiteral* DefaultConstructor(bool call_super, Scope* scope, int pos,
                                       int end_pos);
 
   // Skip over a lazy function, either using cached data if we have it, or
   // by parsing the function with PreParser. Consumes the ending }.
   void SkipLazyFunctionBody(const AstRawString* function_name,
                             int* materialized_literal_count,
                             int* expected_property_count,
                             bool* ok);
@@ skipping 40 matching lines @@
   HistogramTimer* pre_parse_timer_;
 };
 
 
 bool ParserTraits::IsFutureStrictReserved(
     const AstRawString* identifier) const {
   return parser_->scanner()->IdentifierIsFutureStrictReserved(identifier);
 }
 
 
-Scope* ParserTraits::NewScope(Scope* parent_scope, ScopeType scope_type) {
-  return parser_->NewScope(parent_scope, scope_type);
+Scope* ParserTraits::NewScope(Scope* parent_scope, ScopeType scope_type,
+                              FunctionKind kind) {
+  return parser_->NewScope(parent_scope, scope_type, kind);
 }
 
 
 const AstRawString* ParserTraits::EmptyIdentifierString() {
   return parser_->ast_value_factory()->empty_string();
 }
 
 
 void ParserTraits::SkipLazyFunctionBody(const AstRawString* function_name,
                                         int* materialized_literal_count,
@@ skipping 67 matching lines @@
 }
 
 
 Expression* ParserTraits::CloseTemplateLiteral(TemplateLiteralState* state,
                                                int start, Expression* tag) {
   return parser_->CloseTemplateLiteral(state, start, tag);
 }
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_