Introduce LiteralsArray to hide it's implementation.

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
 #include "src/ast-numbering.h"
@@ skipping 5751 matching lines @@
   HConstant* instr = New<HConstant>(expr->value());
   return ast_context()->ReturnInstruction(instr, expr->id());
 }
 
 
 void HOptimizedGraphBuilder::VisitRegExpLiteral(RegExpLiteral* expr) {
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);
   DCHECK(current_block()->HasPredecessor());
   Handle<JSFunction> closure = function_state()->compilation_info()->closure();
-  Handle<FixedArray> literals(closure->literals());
+  Handle<LiteralsArray> literals(closure->literals());
   HRegExpLiteral* instr = New<HRegExpLiteral>(literals,
                                               expr->pattern(),
                                               expr->flags(),
                                               expr->literal_index());
   return ast_context()->ReturnInstruction(instr, expr->id());
 }
 
 
 static bool CanInlinePropertyAccess(Handle<Map> map) {
   if (map->instance_type() == HEAP_NUMBER_TYPE) return true;
@@ skipping 75 matching lines @@
 void HOptimizedGraphBuilder::VisitObjectLiteral(ObjectLiteral* expr) {
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);
   DCHECK(current_block()->HasPredecessor());
 
   Handle<JSFunction> closure = function_state()->compilation_info()->closure();
   HInstruction* literal;
 
   // Check whether to use fast or slow deep-copying for boilerplate.
   int max_properties = kMaxFastLiteralProperties;
-  Handle<Object> literals_cell(closure->literals()->get(expr->literal_index()),
-                               isolate());
+  Handle<Object> literals_cell(
+      closure->literals()->literal(expr->literal_index()), isolate());
   Handle<AllocationSite> site;
   Handle<JSObject> boilerplate;
   if (!literals_cell->IsUndefined()) {
     // Retrieve the boilerplate
     site = Handle<AllocationSite>::cast(literals_cell);
     boilerplate = Handle<JSObject>(JSObject::cast(site->transition_info()),
                                    isolate());
   }
 
   if (!boilerplate.is_null() &&
       IsFastLiteral(boilerplate, kMaxFastLiteralDepth, &max_properties)) {
     AllocationSiteUsageContext site_context(isolate(), site, false);
     site_context.EnterNewScope();
     literal = BuildFastLiteral(boilerplate, &site_context);
     site_context.ExitScope(site, boilerplate);
   } else {
     NoObservableSideEffectsScope no_effects(this);
-    Handle<FixedArray> closure_literals(closure->literals(), isolate());
+    Handle<LiteralsArray> closure_literals(closure->literals(), isolate());
     Handle<FixedArray> constant_properties = expr->constant_properties();
     int literal_index = expr->literal_index();
     int flags = expr->ComputeFlags(true);
 
     Add<HPushArguments>(Add<HConstant>(closure_literals),
                         Add<HConstant>(literal_index),
                         Add<HConstant>(constant_properties),
                         Add<HConstant>(flags));
 
     Runtime::FunctionId function_id = Runtime::kCreateObjectLiteral;
@@ skipping 90 matching lines @@
 void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);
   DCHECK(current_block()->HasPredecessor());
   expr->BuildConstantElements(isolate());
   ZoneList<Expression*>* subexprs = expr->values();
   int length = subexprs->length();
   HInstruction* literal;
 
   Handle<AllocationSite> site;
-  Handle<FixedArray> literals(environment()->closure()->literals(), isolate());
+  Handle<LiteralsArray> literals(environment()->closure()->literals(),
+                                 isolate());
   bool uninitialized = false;
-  Handle<Object> literals_cell(literals->get(expr->literal_index()),
+  Handle<Object> literals_cell(literals->literal(expr->literal_index()),
                                isolate());
   Handle<JSObject> boilerplate_object;
   if (literals_cell->IsUndefined()) {
     uninitialized = true;
     Handle<Object> raw_boilerplate;
     ASSIGN_RETURN_ON_EXCEPTION_VALUE(
         isolate(), raw_boilerplate,
         Runtime::CreateArrayLiteralBoilerplate(
             isolate(), literals, expr->constant_elements(),
             is_strong(function_language_mode())),
         Bailout(kArrayBoilerplateCreationFailed));
 
     boilerplate_object = Handle<JSObject>::cast(raw_boilerplate);
     AllocationSiteCreationContext creation_context(isolate());
     site = creation_context.EnterNewScope();
     if (JSObject::DeepWalk(boilerplate_object, &creation_context).is_null()) {
       return Bailout(kArrayBoilerplateCreationFailed);
     }
     creation_context.ExitScope(site, boilerplate_object);
-    literals->set(expr->literal_index(), *site);
+    literals->set_literal(expr->literal_index(), *site);
 
     if (boilerplate_object->elements()->map() ==
         isolate()->heap()->fixed_cow_array_map()) {
       isolate()->counters()->cow_arrays_created_runtime()->Increment();
     }
   } else {
     DCHECK(literals_cell->IsAllocationSite());
     site = Handle<AllocationSite>::cast(literals_cell);
     boilerplate_object = Handle<JSObject>(
         JSObject::cast(site->transition_info()), isolate());
@@ skipping 7587 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8