[strong] Allow mutually recursive classes.

src/parser.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
 #include "src/base/platform/platform.h"
@@ skipping 1911 matching lines @@
   // the caller's scope so we declare all locals, too.
   if (declaration_scope->is_function_scope() ||
       declaration_scope->is_strict_eval_scope() ||
       declaration_scope->is_block_scope() ||
       declaration_scope->is_module_scope() ||
       declaration_scope->is_script_scope()) {
     // Declare the variable in the declaration scope.
     var = declaration_scope->LookupLocal(name);
     if (var == NULL) {
       // Declare the name.
+      Variable::Kind kind = Variable::NORMAL;
+      if (declaration->IsFunctionDeclaration()) {
+        kind = Variable::FUNCTION;
+      } else if (declaration->IsVariableDeclaration() &&
+                 declaration->AsVariableDeclaration()->is_class_declaration()) {
+        kind = Variable::CLASS;
+      }
       var = declaration_scope->DeclareLocal(
-          name, mode, declaration->initialization(),
-          declaration->IsFunctionDeclaration() ? Variable::FUNCTION
-                                               : Variable::NORMAL,
-          kNotAssigned);
+          name, mode, declaration->initialization(), kind, kNotAssigned);
     } else if (IsLexicalVariableMode(mode) ||
                IsLexicalVariableMode(var->mode()) ||
                ((mode == CONST_LEGACY || var->mode() == CONST_LEGACY) &&
                 !declaration_scope->is_script_scope())) {
       // The name was declared in this scope before; check for conflicting
       // re-declarations. We have a conflict if either of the declarations is
       // not a var (in script scope, we also have to ignore legacy const for
       // compatibility). There is similar code in runtime.cc in the Declare
       // functions. The function CheckConflictingVarDeclarations checks for
       // var and let bindings from different scopes whereas this is a check for
@@ skipping 197 matching lines @@
 
   int pos = position();
   bool is_strict_reserved = false;
   const AstRawString* name =
       ParseIdentifierOrStrictReservedWord(&is_strict_reserved, CHECK_OK);
   ClassLiteral* value = ParseClassLiteral(name, scanner()->location(),
                                           is_strict_reserved, pos, CHECK_OK);
 
   VariableMode mode = is_strong(language_mode()) ? CONST : LET;
   VariableProxy* proxy = NewUnresolved(name, mode);
-  Declaration* declaration =
-      factory()->NewVariableDeclaration(proxy, mode, scope_, pos);
+  const bool is_class_declaration = true;
+  Declaration* declaration = factory()->NewVariableDeclaration(
+      proxy, mode, scope_, pos, is_class_declaration);
   Declare(declaration, true, CHECK_OK);
   proxy->var()->set_initializer_position(position());
 
   Token::Value init_op =
       is_strong(language_mode()) ? Token::INIT_CONST : Token::INIT_LET;
   Assignment* assignment = factory()->NewAssignment(init_op, proxy, value, pos);
   Statement* assignment_statement =
       factory()->NewExpressionStatement(assignment, RelocInfo::kNoPosition);
   if (names) names->Add(name, zone());
   return assignment_statement;
@@ skipping 3607 matching lines @@
 
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
   return factory()->NewCallRuntime(
       ast_value_factory()->reflect_construct_string(), NULL, args, pos);
 }
 } }  // namespace v8::internal