Preparse lazy function parameters

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 869 matching lines @@
   }
 
   // Parses a single function literal, from the opening parentheses before
   // parameters to the closing brace after the body.
   // Returns a FunctionEntry describing the body of the function in enough
   // detail that it can be lazily compiled.
   // The scanner is expected to have matched the "function" or "function*"
   // keyword and parameters, and have consumed the initial '{'.
   // At return, unless an error occurred, the scanner is positioned before the
   // the final '}'.
-  PreParseResult PreParseFunction(DeclarationScope* function_scope,
+  PreParseResult PreParseFunction(FunctionKind kind,
+                                  DeclarationScope* function_scope,
                                   bool parsing_module, SingletonLogger* log,
                                   bool track_unresolved_variables,
                                   bool may_abort, int* use_counts);
 
  private:
   // These types form an algebra over syntactic categories that is just
   // rich enough to let us recognize and propagate the constructs that
   // are either being counted in the preparser data, or is important
   // 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.
 
   V8_INLINE PreParserStatementList ParseEagerFunctionBody(
       PreParserIdentifier function_name, int pos,
       const PreParserFormalParameters& parameters, FunctionKind kind,
       FunctionLiteral::FunctionType function_type, bool* ok);
 
   bool AllowsLazyParsingWithoutUnresolvedVariables() const { return false; }
 
-  V8_INLINE LazyParsingResult SkipLazyFunctionBody(
+  V8_INLINE LazyParsingResult SkipFunction(
+      FunctionKind kind, DeclarationScope* function_scope, int* num_parameters,
+      int* function_length, bool* has_duplicate_parameters,
       int* materialized_literal_count, int* expected_property_count,
-      bool track_unresolved_variables, bool may_abort, bool* ok) {
+      bool is_inner_function, 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 ParseStatementListAndLogFunction(bool may_abort, bool* ok);
+  LazyParsingResult ParseStatementListAndLogFunction(
+      int position_before_formals, PreParserFormalParameters* formals,
+      bool has_duplicate_parameters, bool maybe_abort, 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(
@@ skipping 605 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H