Major Refactoring v2.0

1 files changed, 127 insertions, 0 deletions

diff --git a/src/uscxml/interpreter/MicroStepImpl.h b/src/uscxml/interpreter/MicroStepImpl.h
new file mode 100644
index 0000000..71c03b5
--- /dev/null
+++ b/src/uscxml/interpreter/MicroStepImpl.h
@@ -0,0 +1,127 @@
+/**
+ *  @file
+ *  @author     2016 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
+ *  @copyright  Simplified BSD
+ *
+ *  @cond
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the FreeBSD license as published by the FreeBSD
+ *  project.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *  You should have received a copy of the FreeBSD license along with this
+ *  program. If not, see <http://www.opensource.org/licenses/bsd-license>.
+ *  @endcond
+ */
+
+#ifndef MICROSTEPIMPL_H_98233709
+#define MICROSTEPIMPL_H_98233709
+
+#include <memory>
+#include <mutex>
+#include <list>
+#include <map>
+#include <string>
+
+#include "uscxml/Common.h"
+#include "uscxml/messages/Event.h"
+#include "uscxml/interpreter/InterpreterMonitor.h"
+#include "uscxml/util/DOM.h"
+#include <xercesc/dom/DOM.hpp>
+
+namespace uscxml {
+
+enum InterpreterState {
+
+
+	USCXML_FINISHED       = -2,  ///< machine reached a final configuration and is done
+	USCXML_INTERRUPTED    = -1,  ///< machine received the empty event on the external queue
+	USCXML_UNDEF          = 0,   ///< not an actual state
+	USCXML_IDLE           = 1,   ///< stable configuration and queues empty
+	USCXML_INITIALIZED    = 2,   ///< DOM is setup and all external components instantiated
+	USCXML_INSTANTIATED   = 3,   ///< nothing really, just instantiated
+	USCXML_MICROSTEPPED   = 4,   ///< processed one transition set
+	USCXML_MACROSTEPPED   = 5,   ///< processed all transition sets and reached a stable configuration
+	USCXML_CANCELLED      = 6,   ///< machine was cancelled, step once more to finalize
+};
+
+class USCXML_API MicroStepCallbacks {
+public:
+	/** Event Queues / Matching */
+	virtual Event dequeueInternal() = 0;
+	virtual Event dequeueExternal(bool blocking) = 0;
+	virtual bool isMatched(const Event& event, const std::string& eventDesc) = 0;
+	virtual void raiseDoneEvent(xercesc::DOMElement* state, xercesc::DOMElement* doneData) = 0;
+
+	/** Datamodel */
+	virtual bool isTrue(const std::string& expr) = 0;
+	virtual void initData(xercesc::DOMElement* element) = 0;
+
+	/** Executable Content */
+	virtual void process(xercesc::DOMElement* block) = 0;
+
+	/** Invocations */
+	virtual void invoke(xercesc::DOMElement* invoke) = 0;
+	virtual void uninvoke(xercesc::DOMElement* invoke) = 0;
+
+	/** Monitoring */
+	virtual InterpreterMonitor* getMonitor() = 0;
+};
+
+class USCXML_API MicroStepImpl {
+public:
+	enum Binding {
+		EARLY = 0,
+		LATE = 1
+	};
+
+	MicroStepImpl(MicroStepCallbacks* callbacks) : _callbacks(callbacks) {}
+
+	virtual InterpreterState step(bool blocking) = 0;
+	virtual void reset() = 0; ///< Reset state machine
+	virtual bool isInState(const std::string& stateId) = 0;
+	virtual std::list<xercesc::DOMElement*> getConfiguration() = 0;
+
+	virtual void init(xercesc::DOMElement* scxml) = 0;
+	virtual void markAsCancelled() = 0;
+
+protected:
+	MicroStepCallbacks* _callbacks;
+
+};
+
+class USCXML_API MicroStep {
+public:
+	PIMPL_OPERATORS(MicroStep)
+
+	virtual InterpreterState step(bool blocking) {
+		return _impl->step(blocking);
+	}
+	virtual void reset() {
+		return _impl->reset();
+	}
+	virtual bool isInState(const std::string& stateId) {
+		return _impl->isInState(stateId);
+	}
+
+	std::list<xercesc::DOMElement*> getConfiguration() {
+		return _impl->getConfiguration();
+	}
+
+	virtual void init(xercesc::DOMElement* scxml) {
+		_impl->init(scxml);
+	}
+
+	virtual void markAsCancelled() {
+		_impl->markAsCancelled();
+	}
+protected:
+	std::shared_ptr<MicroStepImpl> _impl;
+};
+
+}
+
+#endif /* end of include guard: MICROSTEPIMPL_H_98233709 */