[parser] Refactor of ParseClass* and ParseNativeDeclaration

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/parsing/parser-base.h"
 
@@ skipping 709 matching lines @@
   // PreParser doesn't need to store generator variables.
   typedef void Variable;
 
   // Return types for traversing functions.
   typedef PreParserIdentifier Identifier;
   typedef PreParserExpression Expression;
   typedef PreParserExpression FunctionLiteral;
   typedef PreParserExpression ObjectLiteralProperty;
   typedef PreParserExpression ClassLiteralProperty;
   typedef PreParserExpressionList ExpressionList;
-  typedef PreParserExpressionList PropertyList;
+  typedef PreParserExpressionList ObjectPropertyList;
+  typedef PreParserExpressionList ClassPropertyList;
   typedef PreParserFormalParameters FormalParameters;
   typedef PreParserStatement Statement;
   typedef PreParserStatementList StatementList;
   typedef PreParserStatement Block;
   typedef PreParserStatement BreakableStatement;
   typedef PreParserStatement IterationStatement;
 
   // For constructing objects returned by the traversing functions.
   typedef PreParserFactory Factory;
 
@@ skipping 92 matching lines @@
   // to throw the correct syntax error exceptions.
 
   // All ParseXXX functions take as the last argument an *ok parameter
   // which is set to false if parsing failed; it is unchanged otherwise.
   // By making the 'exception handling' explicit, we are forced to check
   // for failure at the call sites.
   Statement ParseFunctionDeclaration(bool* ok);
   Statement ParseAsyncFunctionDeclaration(ZoneList<const AstRawString*>* names,
                                           bool default_export, bool* ok);
   Expression ParseAsyncFunctionExpression(bool* ok);
-  Statement ParseClassDeclaration(ZoneList<const AstRawString*>* names,
-                                  bool default_export, bool* ok);
   Expression ParseConditionalExpression(bool accept_IN, bool* ok);
   Expression ParseObjectLiteral(bool* ok);
 
   V8_INLINE PreParserStatementList ParseEagerFunctionBody(
       PreParserIdentifier function_name, int pos,
       const PreParserFormalParameters& parameters, FunctionKind kind,
       FunctionLiteral::FunctionType function_type, bool* ok);
 
   V8_INLINE LazyParsingResult
   SkipLazyFunctionBody(int* materialized_literal_count,
                        int* expected_property_count, bool may_abort, bool* ok) {
     UNREACHABLE();
     return kLazyParsingComplete;
   }
   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);
   LazyParsingResult ParseLazyFunctionLiteralBody(bool may_abort, bool* ok);
 
-  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);
@@ skipping 59 matching lines @@
   V8_INLINE ZoneList<const AstRawString*>* DeclareLabel(
       ZoneList<const AstRawString*>* labels, PreParserExpression expr,
       bool* ok) {
     DCHECK(!expr.AsIdentifier().IsEnum());
     DCHECK(!parsing_module_ || !expr.AsIdentifier().IsAwait());
     DCHECK(is_sloppy(language_mode()) ||
            !IsFutureStrictReserved(expr.AsIdentifier()));
     return labels;
   }
 
-  V8_INLINE PreParserStatement ParseNativeDeclaration(bool* ok) {
-    UNREACHABLE();
-    return PreParserStatement::Default();
-  }
-
   // TODO(nikolaos): The preparser currently does not keep track of labels.
   V8_INLINE bool ContainsLabel(ZoneList<const AstRawString*>* labels,
                                PreParserIdentifier label) {
     return false;
   }
 
   V8_INLINE PreParserExpression RewriteReturn(PreParserExpression return_value,
                                               int pos) {
     return return_value;
   }
@@ skipping 26 matching lines @@
     return PreParserStatement::Default();
   }
 
   V8_INLINE PreParserStatement DeclareFunction(
       PreParserIdentifier variable_name, PreParserExpression function, int pos,
       bool is_generator, bool is_async, ZoneList<const AstRawString*>* names,
       bool* ok) {
     return Statement::Default();
   }
 
+  V8_INLINE PreParserStatement
+  DeclareClass(PreParserIdentifier variable_name, PreParserExpression value,
+               ZoneList<const AstRawString*>* names, int pos, bool* ok) {
+    return PreParserStatement::Default();
+  }
+  V8_INLINE void DeclareClassVariable(PreParserIdentifier name,
+                                      Scope* block_scope, ClassInfo* class_info,
+                                      int pos, bool* ok) {}
+  V8_INLINE void DeclareClassProperty(PreParserIdentifier class_name,
+                                      PreParserExpression property,
+                                      ClassInfo* class_info, bool* ok) {}
+  V8_INLINE PreParserExpression RewriteClassLiteral(PreParserIdentifier name,
+                                                    ClassInfo* class_info,
+                                                    int pos, bool* ok) {
+    return PreParserExpression::Default();
+  }
+
+  V8_INLINE PreParserStatement DeclareNative(PreParserIdentifier name, int pos,
+                                             bool* ok) {
+    return PreParserStatement::Default();
+  }
+
   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 87 matching lines @@
       PreParserIdentifier* default_string,
       PreParserIdentifier* star_default_star_string) {}
 
   // Functions for encapsulating the differences between parsing and preparsing;
   // operations interleaved with the recursive descent.
   V8_INLINE static void PushLiteralName(PreParserIdentifier id) {}
   V8_INLINE static void PushVariableName(PreParserIdentifier id) {}
   V8_INLINE void PushPropertyName(PreParserExpression expression) {}
   V8_INLINE void PushEnclosingName(PreParserIdentifier name) {}
   V8_INLINE static void InferFunctionName(PreParserExpression expression) {}
+  V8_INLINE static void Infer() {}
 
   V8_INLINE static void CheckAssigningFunctionLiteralToProperty(
       PreParserExpression left, PreParserExpression right) {}
 
   V8_INLINE static PreParserExpression MarkExpressionAsAssigned(
       PreParserExpression expression) {
     // TODO(marja): To be able to produce the same errors, the preparser needs
     // to start tracking which expressions are variables and which are assigned.
     return expression;
   }
@@ skipping 196 matching lines @@
     if (scanner()->UnescapedLiteralMatches("use strict", 10)) {
       return PreParserExpression::UseStrictStringLiteral();
     }
     return PreParserExpression::StringLiteral();
   }
 
   V8_INLINE PreParserExpressionList NewExpressionList(int size) const {
     return PreParserExpressionList();
   }
 
-  V8_INLINE PreParserExpressionList NewPropertyList(int size) const {
+  V8_INLINE PreParserExpressionList NewObjectPropertyList(int size) const {
     return PreParserExpressionList();
   }
 
+  V8_INLINE PreParserExpressionList NewClassPropertyList(int size) const {
+    return PreParserExpressionList();
+  }
+
   V8_INLINE PreParserStatementList NewStatementList(int size) const {
     return PreParserStatementList();
   }
 
   PreParserStatementList NewCaseClauseList(int size) {
     return PreParserStatementList();
   }
 
   V8_INLINE PreParserExpression
   NewV8Intrinsic(PreParserIdentifier name, PreParserExpressionList arguments,
@@ skipping 122 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H