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// Copyright 2008, Google Inc.
// 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_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__
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