Remove class fields desugaring

src/parsing/preparser.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_PARSING_PREPARSER_H
 #define V8_PARSING_PREPARSER_H
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/parsing/parser-base.h"
@@ skipping 304 matching lines @@
   PreParserExpression* operator->() { return this; }
 
   // More dummy implementations of things PreParser doesn't need to track:
   void set_index(int index) {}  // For YieldExpressions
   void SetShouldEagerCompile() {}
   void set_should_be_used_once_hint() {}
 
   int position() const { return kNoSourcePosition; }
   void set_function_token_position(int position) {}
 
-  void set_is_class_field_initializer(bool is_class_field_initializer) {}
-
  private:
   enum Type {
     kEmpty,
     kExpression,
     kIdentifierExpression,
     kStringLiteralExpression,
     kSpreadExpression,
     kObjectLiteralExpression,
     kArrayLiteralExpression
   };
@@ skipping 630 matching lines @@
   V8_INLINE void MarkCollectedTailCallExpressions() {}
   V8_INLINE void MarkTailPosition(PreParserExpression expression) {}
 
   V8_INLINE PreParserExpression SpreadCall(PreParserExpression function,
                                            PreParserExpressionList args,
                                            int pos);
   V8_INLINE PreParserExpression SpreadCallNew(PreParserExpression function,
                                               PreParserExpressionList args,
                                               int pos);
 
-  V8_INLINE PreParserExpression
-  RewriteSuperCall(PreParserExpression call_expression) {
-    return call_expression;
-  }
-
   V8_INLINE void RewriteDestructuringAssignments() {}
 
   V8_INLINE PreParserExpression RewriteExponentiation(PreParserExpression left,
                                                       PreParserExpression right,
                                                       int pos) {
     return left;
   }
   V8_INLINE PreParserExpression RewriteAssignExponentiation(
       PreParserExpression left, PreParserExpression right, int pos) {
     return left;
@@ skipping 84 matching lines @@
     return PreParserStatement::Default();
   }
   V8_INLINE void DeclareClassVariable(PreParserIdentifier name,
                                       Scope* block_scope, ClassInfo* class_info,
                                       int class_token_pos, bool* ok) {}
   V8_INLINE void DeclareClassProperty(PreParserIdentifier class_name,
                                       PreParserExpression property,
                                       ClassLiteralProperty::Kind kind,
                                       bool is_static, bool is_constructor,
                                       ClassInfo* class_info, bool* ok) {
-    if (kind == ClassLiteralProperty::FIELD && !is_static && !is_constructor) {
-      class_info->instance_field_initializers->Add(
-          PreParserExpression::Default(), zone());
-    }
   }
   V8_INLINE PreParserExpression RewriteClassLiteral(PreParserIdentifier name,
                                                     ClassInfo* class_info,
                                                     int pos, bool* ok) {
     bool has_default_constructor = !class_info->has_seen_constructor;
-    bool has_instance_fields =
-        class_info->instance_field_initializers->length() > 0;
     // Account for the default constructor.
     if (has_default_constructor) GetNextFunctionLiteralId();
-    if (allow_harmony_class_fields() && has_instance_fields) {
-      // Account for initializer function.
-      GetNextFunctionLiteralId();
-    }
     return PreParserExpression::Default();
   }
 
   V8_INLINE PreParserStatement DeclareNative(PreParserIdentifier name, int pos,
                                              bool* ok) {
     return PreParserStatement::Default();
   }
 
   V8_INLINE void QueueDestructuringAssignmentForRewriting(
       PreParserExpression assignment) {}
@@ skipping 483 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H