Thread decls-list through Declaration

src/parsing/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/parsing/parser.h"
 
 #include <memory>
 
 #include "src/api.h"
 #include "src/ast/ast-expression-rewriter.h"
@@ skipping 3621 matching lines @@
 }
 
 
 void Parser::InsertShadowingVarBindingInitializers(Block* inner_block) {
   // For each var-binding that shadows a parameter, insert an assignment
   // initializing the variable with the parameter.
   Scope* inner_scope = inner_block->scope();
   DCHECK(inner_scope->is_declaration_scope());
   Scope* function_scope = inner_scope->outer_scope();
   DCHECK(function_scope->is_function_scope());
-  ZoneList<Declaration*>* decls = inner_scope->declarations();
   BlockState block_state(&scope_state_, inner_scope);
-  for (int i = 0; i < decls->length(); ++i) {
-    Declaration* decl = decls->at(i);
+  for (Declaration* decl : *inner_scope->declarations()) {
     if (decl->proxy()->var()->mode() != VAR || !decl->IsVariableDeclaration()) {
       continue;
     }
     const AstRawString* name = decl->proxy()->raw_name();
     Variable* parameter = function_scope->LookupLocal(name);
     if (parameter == nullptr) continue;
     VariableProxy* to = NewUnresolved(name);
     VariableProxy* from = factory()->NewVariableProxy(parameter);
     Expression* assignment =
         factory()->NewAssignment(Token::ASSIGN, to, from, kNoSourcePosition);
@@ skipping 1750 matching lines @@
 
   return final_loop;
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8