Reduce the memory footprint of expression classifiers

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/scopes.h"
 #include "src/bailout-reason.h"
 #include "src/hashmap.h"
@@ skipping 916 matching lines @@
   inline void QueueNonPatternForRewriting(PreParserExpression) {}
 
   void SetFunctionNameFromPropertyName(PreParserExpression,
                                        PreParserIdentifier) {}
   void SetFunctionNameFromIdentifierRef(PreParserExpression,
                                         PreParserExpression) {}
 
   inline void RewriteNonPattern(Type::ExpressionClassifier* classifier,
                                 bool* ok);
 
+  V8_INLINE ZoneList<typename Type::ExpressionClassifier::Error>*
+      GetReportedErrorList() const;
   V8_INLINE Zone* zone() const;
   V8_INLINE ZoneList<PreParserExpression>* GetNonPatternList() const;
 
   inline PreParserExpression RewriteYieldStar(
       PreParserExpression generator, PreParserExpression expr, int pos);
 
  private:
   PreParser* pre_parser_;
 };
 
@@ skipping 173 matching lines @@
   return pre_parser_->ParseDoExpression(ok);
 }
 
 
 void PreParserTraits::RewriteNonPattern(Type::ExpressionClassifier* classifier,
                                         bool* ok) {
   pre_parser_->ValidateExpression(classifier, ok);
 }
 
 
+ZoneList<typename PreParserTraits::Type::ExpressionClassifier::Error>*
+PreParserTraits::GetReportedErrorList() const {
+  return pre_parser_->function_state_->GetReportedErrorList();
+}
+
+
 Zone* PreParserTraits::zone() const {
   return pre_parser_->function_state_->scope()->zone();
 }
 
 
 ZoneList<PreParserExpression>* PreParserTraits::GetNonPatternList() const {
   return pre_parser_->function_state_->non_patterns_to_rewrite();
 }
 
 
@@ skipping 23 matching lines @@
     const PreParserFormalParameters& parameters, FunctionKind kind,
     FunctionLiteral::FunctionType function_type, bool* ok) {
   return pre_parser_->ParseEagerFunctionBody(function_name, pos, parameters,
                                              kind, function_type, ok);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H