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/**
* @file
* @author 2012-2014 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 CHARTTOFSM_H_IOKPYEBY
#define CHARTTOFSM_H_IOKPYEBY
#include "uscxml/DOMUtils.h"
#include "uscxml/interpreter/InterpreterDraft6.h"
#include <DOM/Document.hpp>
#include <DOM/Node.hpp>
#include <XPath/XPath.hpp>
#include <ostream>
#include <list>
namespace uscxml {
class GlobalState;
class GlobalTransition;
class FlatteningInterpreter;
class USCXML_API GlobalState {
public:
GlobalState() {}
GlobalState(const Arabica::XPath::NodeSet<std::string>& activeStates,
const Arabica::XPath::NodeSet<std::string>& alreadyEnteredStates, // we need to remember for binding=late
const std::map<std::string, Arabica::XPath::NodeSet<std::string> >& historyStates,
const std::string& xmlNSPrefix);
Arabica::XPath::NodeSet<std::string> activeStates;
Arabica::XPath::NodeSet<std::string> alreadyEnteredStates;
std::map<std::string, Arabica::XPath::NodeSet<std::string> > historyStates;
std::map<std::string, GlobalTransition*> incoming;
std::map<std::string, GlobalTransition*> outgoing;
std::string stateId;
static int gIndex;
std::string index;
bool isFinal;
};
class USCXML_API GlobalTransition {
public:
class Action {
public:
Arabica::DOM::Element<std::string> onEntry;
Arabica::DOM::Element<std::string> onExit;
Arabica::DOM::Element<std::string> transition;
Arabica::DOM::Element<std::string> entered;
Arabica::DOM::Element<std::string> exited;
Arabica::DOM::Element<std::string> invoke;
Arabica::DOM::Element<std::string> uninvoke;
};
GlobalTransition(const Arabica::XPath::NodeSet<std::string>& transitions, DataModel dataModel, FlatteningInterpreter* flattener);
bool isValid; // constructor will determine, calling code will delete if not
bool isEventless; // whether or not all our transitions are eventless
bool isTargetless; // whether or not all our transitions are eventless
bool isSubset; // there is a superset to this set
std::vector<long> firstElemPerLevel;
std::vector<long> nrElemPerLevel;
std::vector<long> prioPerLevel;
Arabica::XPath::NodeSet<std::string> transitions; // constituting transitions
std::list<std::string> eventNames; // the list of longest event names that will enable this set
std::string eventDesc; // space-seperated eventnames for convenience
std::string condition; // conjunction of all the set's conditions
// executable content we gathered when we took the transition
std::list<Action> actions;
Arabica::XPath::NodeSet<std::string> entered;
Arabica::XPath::NodeSet<std::string> exited;
Arabica::XPath::NodeSet<std::string> invoke;
Arabica::XPath::NodeSet<std::string> uninvoke;
std::string transitionId;
std::string source;
std::string destination;
std::string index;
FlatteningInterpreter* interpreter;
bool operator< (const GlobalTransition& other) const;
protected:
std::list<std::string> getCommonEvents(const Arabica::XPath::NodeSet<std::string>& transitions);
};
class USCXML_API FlatteningInterpreter : public InterpreterDraft6, public InterpreterMonitor {
public:
FlatteningInterpreter(const Arabica::DOM::Document<std::string>& doc);
virtual ~FlatteningInterpreter();
Arabica::DOM::Document<std::string> getDocument() const; // overwrite to return flat FSM
InterpreterState interpret();
std::list<Arabica::DOM::Element<std::string> > indexedTransitions;
protected:
// gather executable content per microstep
void executeContent(const Arabica::DOM::Element<std::string>& content, bool rethrow = false);
// invoke and uninvoke
virtual void invoke(const Arabica::DOM::Element<std::string>& element);
virtual void cancelInvoke(const Arabica::DOM::Element<std::string>& element);
// override to do nothing
void send(const Arabica::DOM::Element<std::string>& element) {}
void internalDoneSend(const Arabica::DOM::Element<std::string>& state);
// InterpreterMonitor
virtual void beforeMicroStep(Interpreter interpreter);
virtual void onStableConfiguration(Interpreter interpreter);
virtual void beforeExitingState(Interpreter interpreter, const Arabica::DOM::Element<std::string>& state, bool moreComing);
virtual void beforeEnteringState(Interpreter interpreter, const Arabica::DOM::Element<std::string>& state, bool moreComing);
virtual void beforeTakingTransition(Interpreter interpreter, const Arabica::DOM::Element<std::string>& transition, bool moreComing);
void explode();
void labelTransitions();
void weightTransitions();
void createDocument();
void indexTransitions(const Arabica::DOM::Element<std::string>& root);
std::list<GlobalTransition*> sortTransitions(std::list<GlobalTransition*> list);
void appendGlobalStateNode(GlobalState* globalState);
Arabica::DOM::Node<std::string> globalTransitionToNode(GlobalTransition* globalTransition);
GlobalState* _start;
GlobalTransition* _currGlobalTransition;
uint64_t _perfProcessed;
uint64_t _perfTotal;
uint64_t _lastTimeStamp;
int maxDepth;
int maxOrder;
size_t _lastTransientStateId;
Arabica::DOM::Document<std::string> _flatDoc;
std::map<std::string, GlobalState*> _globalConf;
};
class USCXML_API ChartToFSM {
public:
static Interpreter flatten(const Interpreter& other);
static uint64_t stateMachineComplexity(const Arabica::DOM::Element<std::string>& root);
protected:
class USCXML_API Complexity {
public:
Complexity() : value(0) {}
Complexity(uint64_t value) : value(value) {}
Complexity& operator+=(const Complexity& rhs) {
value += rhs.value;
history.insert(history.end(), rhs.history.begin(), rhs.history.end());
return *this;
}
Complexity& operator*=(const Complexity& rhs) {
value *= rhs.value;
history.insert(history.end(), rhs.history.begin(), rhs.history.end());
return *this;
}
uint64_t value;
std::list<uint64_t> history;
};
static Complexity calculateStateMachineComplexity(const Arabica::DOM::Element<std::string>& root);
};
}
#endif /* end of include guard: CHARTTOFSM_H_IOKPYEBY */
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