1 files changed, 74 insertions, 0 deletions
diff --git a/deps/v8/src/zone/zone-allocator.h b/deps/v8/src/zone/zone-allocator.h
new file mode 100644
index 0000000000..8370d73e49
--- /dev/null
+++ b/deps/v8/src/zone/zone-allocator.h
@@ -0,0 +1,74 @@
+// Copyright 2014 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_ZONE_ZONE_ALLOCATOR_H_
+#define V8_ZONE_ZONE_ALLOCATOR_H_
+#include <limits>
+
+#include "src/zone/zone.h"
+
+namespace v8 {
+namespace internal {
+
+template <typename T>
+class zone_allocator {
+ public:
+  typedef T* pointer;
+  typedef const T* const_pointer;
+  typedef T& reference;
+  typedef const T& const_reference;
+  typedef T value_type;
+  typedef size_t size_type;
+  typedef ptrdiff_t difference_type;
+  template <class O>
+  struct rebind {
+    typedef zone_allocator<O> other;
+  };
+
+  explicit zone_allocator(Zone* zone) throw() : zone_(zone) {}
+  explicit zone_allocator(const zone_allocator& other) throw()
+      : zone_(other.zone_) {}
+  template <typename U>
+  zone_allocator(const zone_allocator<U>& other) throw() : zone_(other.zone_) {}
+  template <typename U>
+  friend class zone_allocator;
+
+  pointer address(reference x) const { return &x; }
+  const_pointer address(const_reference x) const { return &x; }
+
+  pointer allocate(size_type n, const void* hint = 0) {
+    return static_cast<pointer>(
+        zone_->NewArray<value_type>(static_cast<int>(n)));
+  }
+  void deallocate(pointer p, size_type) { /* noop for Zones */
+  }
+
+  size_type max_size() const throw() {
+    return std::numeric_limits<int>::max() / sizeof(value_type);
+  }
+  void construct(pointer p, const T& val) {
+    new (static_cast<void*>(p)) T(val);
+  }
+  void destroy(pointer p) { p->~T(); }
+
+  bool operator==(zone_allocator const& other) const {
+    return zone_ == other.zone_;
+  }
+  bool operator!=(zone_allocator const& other) const {
+    return zone_ != other.zone_;
+  }
+
+  Zone* zone() { return zone_; }
+
+ private:
+  zone_allocator();
+  Zone* zone_;
+};
+
+typedef zone_allocator<bool> ZoneBoolAllocator;
+typedef zone_allocator<int> ZoneIntAllocator;
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_ZONE_ZONE_ALLOCATOR_H_