V8DataModel.h

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#ifndef V8DATAMODEL_H_KN8TWG0V
#define V8DATAMODEL_H_KN8TWG0V

#include "uscxml/config.h"
#include "uscxml/plugins/DataModelImpl.h"

#include <list>
#include <set>
#include <v8.h>

#ifdef BUILD_AS_PLUGINS
#include "uscxml/plugins/Plugins.h"
#endif

namespace uscxml {
class Event;
class Data;
}

namespace uscxml {

class V8DataModel : public DataModelImpl {
public:
    V8DataModel();
    virtual ~V8DataModel();
    virtual std::shared_ptr<DataModelImpl> create(DataModelCallbacks* callbacks);

    virtual void addExtension(DataModelExtension* ext);

    virtual std::list<std::string> getNames() {
        std::list<std::string> names;
        names.push_back("ecmascript");
        return names;
    }

    virtual bool isValidSyntax(const std::string& expr);

    virtual void setEvent(const Event& event);

    // foreach
    virtual uint32_t getLength(const std::string& expr);
    virtual void setForeach(const std::string& item,
                            const std::string& array,
                            const std::string& index,
                            uint32_t iteration);

    virtual bool evalAsBool(const std::string& expr);
    virtual Data evalAsData(const std::string& expr);
    virtual Data getAsData(const std::string& content);

    virtual bool isDeclared(const std::string& expr);

    virtual void assign(const std::string& location,
                        const Data& data,
                        const std::map<std::string, std::string>& attr = std::map<std::string, std::string>());
    virtual void init(const std::string& location,
                      const Data& data,
                      const std::map<std::string, std::string>& attr = std::map<std::string, std::string>());

protected:

    static void jsExtension(const v8::FunctionCallbackInfo<v8::Value>& info);
    static void jsIn(const v8::FunctionCallbackInfo<v8::Value>& info);
    static void jsPrint(const v8::FunctionCallbackInfo<v8::Value>& info);

    //v8::Local<v8::Object> _event; // Persistent events leak ..
    v8::Persistent<v8::Context> _context;
    static v8::Isolate* _isolate;

    v8::Persistent<v8::Object> _ioProcessors;
    v8::Persistent<v8::Object> _invokers;

    static void getIOProcessors(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info);
    static void getInvokers(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info);
    static void getAttribute(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info);
    static void setWithException(v8::Local<v8::String> property,
                                 v8::Local<v8::Value> value,
                                 const v8::PropertyCallbackInfo<void>& info);

    v8::Local<v8::Value> evalAsValue(const std::string& expr, bool dontThrow = false);
    v8::Local<v8::Value> getDataAsValue(const Data& data);
    Data getValueAsData(const v8::Local<v8::Value>& value);
    v8::Local<v8::Value> getNodeAsValue(const XERCESC_NS::DOMNode* node);
    void throwExceptionEvent(const v8::TryCatch& tryCatch);

    std::set<DataModelExtension*> _extensions;

private:
    Data getValueAsData(const v8::Local<v8::Value>& value, std::set<v8::Value*>& alreadySeen);

    static std::mutex _initMutex;

};

#ifdef BUILD_AS_PLUGINS
PLUMA_INHERIT_PROVIDER(V8DataModel, DataModelImpl);
#endif

}

#endif /* end of include guard: V8DATAMODEL_H_KN8TWG0V */