third_party/WebKit/Source/bindings/core/v8/V8ObjectConstructor.h

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* Copyright (C) 2012 Google Inc. All rights reserved.
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#ifndef V8ObjectConstructor_h
#define V8ObjectConstructor_h

#include "bindings/core/v8/V8PerIsolateData.h"
#include "core/CoreExport.h"
#include "wtf/Allocator.h"

#include <v8.h>

namespace blink {

class Document;

class ConstructorMode {
    STACK_ALLOCATED();
public:
    enum Mode {
        WrapExistingObject,
        CreateNewObject
    };

    ConstructorMode(v8::Isolate* isolate)
        : m_isolate(isolate)
        , m_microtaskSuppression(isolate, v8::MicrotasksScope::kDoNotRunMicrotasks)
    {
        V8PerIsolateData* data = V8PerIsolateData::from(m_isolate);
        m_previous = data->m_constructorMode;
        data->m_constructorMode = WrapExistingObject;
    }

    ~ConstructorMode()
    {
        V8PerIsolateData* data = V8PerIsolateData::from(m_isolate);
        data->m_constructorMode = m_previous;
    }

    static bool current(v8::Isolate* isolate)
    {
        return V8PerIsolateData::from(isolate)->m_constructorMode;
    }

private:
    v8::Isolate* m_isolate;
    bool m_previous;
    v8::MicrotasksScope m_microtaskSuppression;
};

class CORE_EXPORT V8ObjectConstructor {
    STATIC_ONLY(V8ObjectConstructor);
public:
    static v8::MaybeLocal<v8::Object> newInstance(v8::Isolate*, v8::Local<v8::Function>);
    static v8::MaybeLocal<v8::Object> newInstance(v8::Isolate*, v8::Local<v8::Function>, int, v8::Local<v8::Value> argv[]);
    static v8::MaybeLocal<v8::Object> newInstanceInDocument(v8::Isolate*, v8::Local<v8::Function>, int, v8::Local<v8::Value> argv[], Document*);

    static void isValidConstructorMode(const v8::FunctionCallbackInfo<v8::Value>&);
};

} // namespace blink

#endif // V8ObjectConstructor_h