1 files changed, 58 insertions, 0 deletions
diff --git a/V8Binding/v8/v8_utility.h b/V8Binding/v8/v8_utility.h
new file mode 100644
index 0000000..620c04c
--- /dev/null
+++ b/V8Binding/v8/v8_utility.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2006-2008 The Chromium 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_UTILITY_H__
+#define V8_UTILITY_H__
+
+namespace WebCore {
+
+class AllowAllocation {
+ public:
+  inline AllowAllocation() {
+    m_prev = m_current;
+    m_current = true;
+  }
+  inline ~AllowAllocation() {
+    m_current = m_prev;
+  }
+  static bool m_current;
+ private:
+  bool m_prev;
+};
+
+class SafeAllocation {
+ public:
+  static inline v8::Local<v8::Object> NewInstance(
+      v8::Handle<v8::Function> fun);
+  static inline v8::Local<v8::Object> NewInstance(
+      v8::Handle<v8::ObjectTemplate> templ);
+  static inline v8::Local<v8::Object> NewInstance(
+      v8::Handle<v8::Function> fun, int argc, v8::Handle<v8::Value> argv[]);
+};
+
+v8::Local<v8::Object> SafeAllocation::NewInstance(
+    v8::Handle<v8::Function> fun) {
+  if (fun.IsEmpty())
+    return v8::Local<v8::Object>();
+  AllowAllocation allow;
+  return fun->NewInstance();
+}
+
+v8::Local<v8::Object> SafeAllocation::NewInstance(
+    v8::Handle<v8::ObjectTemplate> templ) {
+  if (templ.IsEmpty()) return v8::Local<v8::Object>();
+  AllowAllocation allow;
+  return templ->NewInstance();
+}
+
+v8::Local<v8::Object> SafeAllocation::NewInstance(
+    v8::Handle<v8::Function> fun, int argc, v8::Handle<v8::Value> argv[]) {
+  if (fun.IsEmpty()) return v8::Local<v8::Object>();
+  AllowAllocation allow;
+  return fun->NewInstance(argc, argv);
+}
+
+}  // namespace WebCore
+
+#endif   // V8_UTILITY_H__