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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/InterpreterRC.h"
#include <DOM/Document.hpp>
#include <DOM/Node.hpp>
#include <XPath/XPath.hpp>
#include <ostream>
#include <list>
namespace uscxml {
class GlobalState;
class GlobalTransition;
class ChartToFSM;
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;
}
static uint64_t stateMachineComplexity(const Arabica::DOM::Element<std::string>& root);
protected:
static Complexity calculateStateMachineComplexity(const Arabica::DOM::Element<std::string>& root);
uint64_t value;
std::list<uint64_t> history;
};
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,
ChartToFSM* flattener);
std::set<int> activeStatesRefs;
std::set<int> alreadyEnteredStatesRefs;
std::map<std::string, std::set<int> > historyStatesRefs;
Arabica::XPath::NodeSet<std::string> getActiveStates();
Arabica::XPath::NodeSet<std::string> getAlreadyEnteredStates();
std::map<std::string, Arabica::XPath::NodeSet<std::string> > getHistoryStates();
std::list<GlobalTransition*> sortedOutgoing;
std::string stateId;
std::string activeId;
long index;
bool isFinal;
ChartToFSM* interpreter;
};
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, ChartToFSM* 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
bool hasExecutableContent;
uint32_t eventsRaised; // internal events this transition will raise
uint32_t eventsSent; // external events this transition will send
uint32_t eventsChainRaised; // maximum number of internal events raised when taking this transition in a chain
uint32_t eventsChainSent; // maximum number of external events raised when taking this transition in a chain
std::set<int> startTransitionRefs; // indices of eventful transitions that might trigger this transition
std::set<int> transitionRefs; // indizes of constituting transitions
Arabica::XPath::NodeSet<std::string> getTransitions() const;
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
std::string members; // a convenience string listing all constituting transitions
// executable content we gathered when we took the transition
std::list<Action> actions;
std::string transitionId;
std::string source;
std::string destination;
long index;
ChartToFSM* interpreter;
bool operator< (const GlobalTransition& other) const;
protected:
std::list<std::string> getCommonEvents(const Arabica::XPath::NodeSet<std::string>& transitions);
};
class USCXML_API ChartToFSM : public InterpreterRC, public InterpreterMonitor {
public:
virtual ~ChartToFSM();
protected:
ChartToFSM(const Interpreter& other);
Arabica::DOM::Document<std::string> getDocument() const; // overwrite to return flat FSM
InterpreterState interpret();
Arabica::XPath::NodeSet<std::string> refsToStates(const std::set<int>&);
Arabica::XPath::NodeSet<std::string> refsToTransitions(const std::set<int>&);
std::vector<Arabica::DOM::Element<std::string> > indexedTransitions;
std::vector<Arabica::DOM::Element<std::string> > indexedStates;
// 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 getPotentialTransitionsForConf(const Arabica::XPath::NodeSet<std::string>& conf, std::map<std::string, GlobalTransition*>& outMap);
// void labelTransitions();
void indexTransitions(const Arabica::DOM::Element<std::string>& root);
void annotateRaiseAndSend(const Arabica::DOM::Element<std::string>& root);
bool hasForeachInBetween(const Arabica::DOM::Node<std::string>& ancestor, const Arabica::DOM::Node<std::string>& child);
void updateRaisedAndSendChains(GlobalState* state, GlobalTransition* source, std::set<GlobalTransition*> visited);
uint32_t getMinInternalQueueLength(uint32_t defaultVal);
uint32_t getMinExternalQueueLength(uint32_t defaultVal);
std::list<GlobalTransition*> sortTransitions(std::list<GlobalTransition*> list);
// we need this static as we use it in a sort function
static std::map<Arabica::DOM::Node<std::string>, Arabica::DOM::Node<std::string> > _transParents;
static bool filterSameState(const Arabica::XPath::NodeSet<std::string>& transitions);
uint64_t _perfTransProcessed;
uint64_t _perfTransTotal;
uint64_t _perfStatesProcessed;
uint64_t _perfStatesSkippedProcessed;
uint64_t _perfStatesSkippedTotal;
uint64_t _perfStatesCachedProcessed;
uint64_t _perfStatesCachedTotal;
uint64_t _lastTimeStamp;
size_t _lastTransientStateId;
size_t _lastStateIndex;
size_t _lastTransIndex;
size_t _maxEventSentChain;
size_t _maxEventRaisedChain;
size_t _doneEventRaiseTolerance;
GlobalState* _start;
GlobalTransition* _currGlobalTransition;
Arabica::DOM::Document<std::string> _flatDoc;
std::map<std::string, GlobalState*> _globalConf;
std::map<std::string, GlobalState*> _transPerActiveConf; // potentially enabled transition sets per active configuration
friend class GlobalTransition;
friend class GlobalState;
};
}
#endif /* end of include guard: CHARTTOFSM_H_IOKPYEBY */
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