[parser] Hide expression classifiers in parser implementation

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/base/hashmap.h"
@@ skipping 764 matching lines @@
     UNREACHABLE();
   }
   Expression ParseFunctionLiteral(
       Identifier name, Scanner::Location function_name_location,
       FunctionNameValidity function_name_validity, FunctionKind kind,
       int function_token_pos, FunctionLiteral::FunctionType function_type,
       LanguageMode language_mode, bool* ok);
   void ParseLazyFunctionLiteralBody(bool* ok,
                                     Scanner::BookmarkScope* bookmark = nullptr);
 
-  PreParserExpression ParseClassLiteral(ExpressionClassifier* classifier,
-                                        PreParserIdentifier name,
+  PreParserExpression ParseClassLiteral(PreParserIdentifier name,
                                         Scanner::Location class_name_location,
                                         bool name_is_strict_reserved, int pos,
                                         bool* ok);
 
   struct TemplateLiteralState {};
 
   V8_INLINE TemplateLiteralState OpenTemplateLiteral(int pos) {
     return TemplateLiteralState();
   }
   V8_INLINE void AddTemplateExpression(TemplateLiteralState* state,
                                        PreParserExpression expression) {}
   V8_INLINE void AddTemplateSpan(TemplateLiteralState* state, bool tail) {}
   V8_INLINE PreParserExpression CloseTemplateLiteral(
       TemplateLiteralState* state, int start, PreParserExpression tag);
   V8_INLINE void CheckConflictingVarDeclarations(Scope* scope, bool* ok) {}
 
   V8_INLINE void MarkCollectedTailCallExpressions() {}
   V8_INLINE void MarkTailPosition(PreParserExpression expression) {}
 
   void ParseAsyncArrowSingleExpressionBody(PreParserStatementList body,
                                            bool accept_IN,
-                                           ExpressionClassifier* classifier,
                                            int pos, bool* ok);
 
   V8_INLINE PreParserExpressionList
   PrepareSpreadArguments(PreParserExpressionList list) {
     return list;
   }
 
   V8_INLINE PreParserExpression SpreadCall(PreParserExpression function,
                                            PreParserExpressionList args,
                                            int pos);
@@ skipping 15 matching lines @@
 
   V8_INLINE PreParserExpression
   RewriteAwaitExpression(PreParserExpression value, int pos) {
     return value;
   }
   V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression generator,
                                                  PreParserExpression expression,
                                                  int pos) {
     return PreParserExpression::Default();
   }
-  V8_INLINE void RewriteNonPattern(ExpressionClassifier* classifier, bool* ok) {
-    ValidateExpression(classifier, ok);
-  }
+  V8_INLINE void RewriteNonPattern(bool* ok) { ValidateExpression(ok); }
 
   V8_INLINE void QueueDestructuringAssignmentForRewriting(
       PreParserExpression assignment) {}
   V8_INLINE void QueueNonPatternForRewriting(PreParserExpression expr,
                                              bool* ok) {}
 
   // Helper functions for recursive descent.
   V8_INLINE bool IsEval(PreParserIdentifier identifier) const {
     return identifier.IsEval();
   }
@@ skipping 233 matching lines @@
 
   V8_INLINE void AddFormalParameter(PreParserFormalParameters* parameters,
                                     PreParserExpression pattern,
                                     PreParserExpression initializer,
                                     int initializer_end_position,
                                     bool is_rest) {
     ++parameters->arity;
   }
 
   V8_INLINE void DeclareFormalParameter(DeclarationScope* scope,
-                                        PreParserIdentifier parameter,
-                                        ExpressionClassifier* classifier) {
-    if (!classifier->is_simple_parameter_list()) {
+                                        PreParserIdentifier parameter) {
+    if (!classifier()->is_simple_parameter_list()) {
       scope->SetHasNonSimpleParameters();
     }
   }
 
   V8_INLINE void ParseArrowFunctionFormalParameterList(
       PreParserFormalParameters* parameters, PreParserExpression params,
       const Scanner::Location& params_loc, Scanner::Location* duplicate_loc,
       const Scope::Snapshot& scope_snapshot, bool* ok) {
     // TODO(wingo): Detect duplicated identifiers in paramlists.  Detect
     // parameter
@@ skipping 80 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H