Revert "AllocationSites for all literals"

src/allocation-site-scopes.h

-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_ALLOCATION_SITE_SCOPES_H_
-#define V8_ALLOCATION_SITE_SCOPES_H_
-
-#include "ast.h"
-#include "handles.h"
-#include "objects.h"
-#include "zone.h"
-
-namespace v8 {
-namespace internal {
-
-
-// AllocationSiteContext is the base class for walking and copying a nested
-// boilerplate with AllocationSite and AllocationMemento support.
-class AllocationSiteContext {
- public:
-  AllocationSiteContext(Isolate* isolate, bool activated) {
-    isolate_ = isolate;
-    activated_ = activated;
-  };
-  virtual ~AllocationSiteContext() {}
-
-  Handle<AllocationSite> top() { return top_; }
-  Handle<AllocationSite> current() { return current_; }
-
-  // If activated, then recursively create mementos
-  bool activated() const { return activated_; }
-
-  // Returns the AllocationSite that matches this scope.
-  virtual Handle<AllocationSite> EnterNewScope() = 0;
-
-  // scope_site should be the handle returned by the matching EnterNewScope()
-  virtual void ExitScope(Handle<AllocationSite> scope_site,
-                         Handle<JSObject> object) = 0;
-
- protected:
-  void update_current_site(AllocationSite* site) {
-    *(current_.location()) = site;
-  }
-
-  Isolate* isolate() { return isolate_; }
-  void InitializeTraversal(Handle<AllocationSite> site) {
-    top_ = site;
-    current_ = Handle<AllocationSite>(*top_, isolate());
-  }
-
- private:
-  Isolate* isolate_;
-  Handle<AllocationSite> top_;
-  Handle<AllocationSite> current_;
-  bool activated_;
-};
-
-
-// AllocationSiteCreationContext aids in the creation of AllocationSites to
-// accompany object literals.
-class AllocationSiteCreationContext : public AllocationSiteContext {
- public:
-  explicit AllocationSiteCreationContext(Isolate* isolate)
-      : AllocationSiteContext(isolate, true) { }
-
-  virtual Handle<AllocationSite> EnterNewScope() V8_OVERRIDE;
-  virtual void ExitScope(Handle<AllocationSite> site,
-                         Handle<JSObject> object) V8_OVERRIDE;
-};
-
-
-// AllocationSiteUsageContext aids in the creation of AllocationMementos placed
-// behind some/all components of a copied object literal.
-class AllocationSiteUsageContext : public AllocationSiteContext {
- public:
-  AllocationSiteUsageContext(Isolate* isolate, Handle<AllocationSite> site,
-                             bool activated)
-      : AllocationSiteContext(isolate, activated),
-        top_site_(site) { }
-
-  virtual Handle<AllocationSite> EnterNewScope() V8_OVERRIDE;
-  virtual void ExitScope(Handle<AllocationSite> site,
-                         Handle<JSObject> object) V8_OVERRIDE;
-
- private:
-  Handle<AllocationSite> top_site_;
-};
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_ALLOCATION_SITE_SCOPES_H_