JSCDataModel.h

Go to the documentation of this file.

#ifndef JSCDATAMODEL_H_KN8TWG0V
#define JSCDATAMODEL_H_KN8TWG0V

#include "uscxml/config.h"
#include "uscxml/plugins/DataModelImpl.h"
#include <list>
#include <set>
#include <mutex>

#if defined(HAS_JSC_JAVASCRIPTCORE_H)
#include <JavaScriptCore/JavaScriptCore.h>
#elif defined(HAS_JSC_JAVASCRIPT_H)
#include <JavaScriptCore/JavaScript.h>
#else
#error "Did not find header for JSC?"
#endif

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

namespace uscxml {
class Event;
class Data;
}

namespace uscxml {

class JSCDataModel : public DataModelImpl {
public:
    JSCDataModel();
    virtual ~JSCDataModel();
    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 Data getAsData(const std::string& content);
    virtual Data evalAsData(const std::string& expr);
    virtual bool evalAsBool(const std::string& expr);

    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 JSClassDefinition jsInClassDef;
    static JSValueRef jsIn(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception);
    static JSClassDefinition jsPrintClassDef;
    static JSValueRef jsPrint(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception);
    static JSClassDefinition jsExtensionClassDef;
    static JSValueRef jsExtension(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception);

    static JSClassDefinition jsIOProcessorsClassDef;
    static bool jsIOProcessorHasProp(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName);
    static JSValueRef jsIOProcessorGetProp(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception);
    static void jsIOProcessorListProps(JSContextRef ctx, JSObjectRef object, JSPropertyNameAccumulatorRef propertyNames);

    static JSClassDefinition jsInvokersClassDef;
    static bool jsInvokerHasProp(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName);
    static JSValueRef jsInvokerGetProp(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception);
    static void jsInvokerListProps(JSContextRef ctx, JSObjectRef object, JSPropertyNameAccumulatorRef propertyNames);

    JSValueRef getNodeAsValue(const XERCESC_NS::DOMNode* node);
    JSValueRef getDataAsValue(const Data& data);
    Data getValueAsData(const JSValueRef value);
    JSValueRef evalAsValue(const std::string& expr, bool dontThrow = false);

    void handleException(JSValueRef exception);

    std::string _sessionId;
    std::string _name;

    std::set<DataModelExtension*> _extensions;

    Event _event;
    JSGlobalContextRef _ctx;

    static std::mutex _initMutex;

};

#ifdef BUILD_AS_PLUGINS
PLUMA_INHERIT_PROVIDER(JSCDataModel, DataModelImpl)
#endif

}

#endif /* end of include guard: JSCDATAMODEL_H_KN8TWG0V */