DPDA.h

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/*
 * This file is part of Algorithms library toolkit.
 * Copyright (C) 2017 Jan Travnicek (jan.travnicek@fit.cvut.cz)
 
 * Algorithms library toolkit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 
 * Algorithms library toolkit 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.  See the
 * GNU General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with Algorithms library toolkit.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
 
#include <ext/algorithm>
 
#include <alib/set>
#include <alib/map>
#include <alib/vector>
 
#include <core/components.hpp>
 
#include <common/DefaultStateType.h>
#include <common/DefaultSymbolType.h>
 
#include <automaton/AutomatonException.h>
 
#include <core/normalize.hpp>
#include <alphabet/common/SymbolNormalize.h>
#include <automaton/common/AutomatonNormalize.h>
 
namespace automaton {
 
class InputAlphabet;
class PushdownStoreAlphabet;
class InitialSymbol;
class States;
class FinalStates;
class InitialState;
 
template < class InputSymbolTypeT = DefaultSymbolType, class PushdownStoreSymbolTypeT = DefaultSymbolType, class StateTypeT = DefaultStateType >
class DPDA final : public core::Components < DPDA < InputSymbolTypeT, PushdownStoreSymbolTypeT, StateTypeT >, ext::set < InputSymbolTypeT >, component::Set, InputAlphabet, ext::set < PushdownStoreSymbolTypeT >, component::Set, PushdownStoreAlphabet, PushdownStoreSymbolTypeT, component::Value, InitialSymbol, ext::set < StateTypeT >, component::Set, std::tuple < States, FinalStates >, StateTypeT, component::Value, InitialState > {
public:
    typedef InputSymbolTypeT InputSymbolType;
    typedef PushdownStoreSymbolTypeT PushdownStoreSymbolType;
    typedef StateTypeT StateType;
 
private:
    ext::map < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > transitions;
 
public:
    explicit DPDA ( ext::set < StateType > states, ext::set < InputSymbolType > inputAlphabet, ext::set < PushdownStoreSymbolType > pushdownStoreAlphabet, StateType initialState, PushdownStoreSymbolType initialSymbol, ext::set < StateType > finalStates );
 
    explicit DPDA ( StateType initialState, PushdownStoreSymbolType initialPushdownSymbol );
 
    const StateType & getInitialState ( ) const & {
        return this-> template accessComponent < InitialState > ( ).get ( );
    }
 
    StateType && getInitialState ( ) && {
        return std::move ( this-> template accessComponent < InitialState > ( ).get ( ) );
    }
 
    bool setInitialState ( StateType state ) {
        return this-> template accessComponent < InitialState > ( ).set ( std::move ( state ) );
    }
 
    const ext::set < StateType > & getStates ( ) const & {
        return this-> template accessComponent < States > ( ).get ( );
    }
 
    ext::set < StateType > && getStates ( ) && {
        return std::move ( this-> template accessComponent < States > ( ).get ( ) );
    }
 
    bool addState ( StateType state ) {
        return this-> template accessComponent < States > ( ).add ( std::move ( state ) );
    }
 
    void setStates ( ext::set < StateType > states ) {
        this-> template accessComponent < States > ( ).set ( std::move ( states ) );
    }
 
    void removeState ( const StateType & state ) {
        this-> template accessComponent < States > ( ).remove ( state );
    }
 
    const ext::set < StateType > & getFinalStates ( ) const & {
        return this-> template accessComponent < FinalStates > ( ).get ( );
    }
 
    ext::set < StateType > && getFinalStates ( ) && {
        return std::move ( this-> template accessComponent < FinalStates > ( ).get ( ) );
    }
 
    bool addFinalState ( StateType state ) {
        return this-> template accessComponent < FinalStates > ( ).add ( std::move ( state ) );
    }
 
    void setFinalStates ( ext::set < StateType > states ) {
        this-> template accessComponent < FinalStates > ( ).set ( std::move ( states ) );
    }
 
    void removeFinalState ( const StateType & state ) {
        this-> template accessComponent < FinalStates > ( ).remove ( state );
    }
 
    const ext::set < PushdownStoreSymbolType > & getPushdownStoreAlphabet ( ) const & {
        return this->template accessComponent < PushdownStoreAlphabet > ( ).get ( );
    }
 
    ext::set < PushdownStoreSymbolType > && getPushdownStoreAlphabet ( ) && {
        return std::move ( this->template accessComponent < PushdownStoreAlphabet > ( ).get ( ) );
    }
 
    bool addPushdownStoreSymbol ( PushdownStoreSymbolType symbol ) {
        return this->template accessComponent < PushdownStoreAlphabet > ( ).add ( std::move ( symbol ) );
    }
 
    void addPushdownStoreSymbols ( ext::set < PushdownStoreSymbolType > symbols ) {
        this->template accessComponent < PushdownStoreAlphabet > ( ).add ( std::move ( symbols ) );
    }
 
    void setPushdownStoreAlphabet ( ext::set < PushdownStoreSymbolType > symbols ) {
        this->template accessComponent < PushdownStoreAlphabet > ( ).set ( std::move ( symbols ) );
    }
 
    void removePushdownStoreSymbol ( const PushdownStoreSymbolType & symbol ) {
        this->template accessComponent < PushdownStoreAlphabet > ( ).remove ( symbol );
    }
 
    const PushdownStoreSymbolType & getInitialSymbol ( ) const & {
        return this->template accessComponent < InitialSymbol > ( ).get ( );
    }
 
    PushdownStoreSymbolType && getInitialSymbol ( ) && {
        return std::move ( this->template accessComponent < InitialSymbol > ( ).get ( ) );
    }
 
    bool setInitialSymbol ( PushdownStoreSymbolType symbol ) {
        return this->template accessComponent < InitialSymbol > ( ).set ( std::move ( symbol ) );
    }
 
    const ext::set < InputSymbolType > & getInputAlphabet ( ) const & {
        return this-> template accessComponent < InputAlphabet > ( ).get ( );
    }
 
    ext::set < InputSymbolType > && getInputAlphabet ( ) && {
        return std::move ( this-> template accessComponent < InputAlphabet > ( ).get ( ) );
    }
 
    bool addInputSymbol ( InputSymbolType symbol ) {
        return this-> template accessComponent < InputAlphabet > ( ).add ( std::move ( symbol ) );
    }
 
    void addInputSymbols ( ext::set < InputSymbolType > symbols ) {
        this-> template accessComponent < InputAlphabet > ( ).add ( std::move ( symbols ) );
    }
 
    void setInputAlphabet ( ext::set < InputSymbolType > symbols ) {
        this-> template accessComponent < InputAlphabet > ( ).set ( std::move ( symbols ) );
    }
 
    void removeInputSymbol ( const InputSymbolType & symbol ) {
        this-> template accessComponent < InputAlphabet > ( ).remove ( symbol );
    }
 
    bool addTransition ( StateType from, common::symbol_or_epsilon < InputSymbolType > input, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push );
 
    bool addTransition ( StateType from, InputSymbolType input, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push );
 
    bool addTransition ( StateType from, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push );
 
    bool removeTransition ( const StateType & from, const common::symbol_or_epsilon < InputSymbolType > & input, const ext::vector < PushdownStoreSymbolType > & pop, const StateType & to, const ext::vector < PushdownStoreSymbolType > & push );
 
    bool removeTransition ( const StateType & from, const InputSymbolType & input, const ext::vector < PushdownStoreSymbolType > & pop, const StateType & to, const ext::vector < PushdownStoreSymbolType > & push );
 
    bool removeTransition ( const StateType & from, const ext::vector < PushdownStoreSymbolType > & pop, const StateType & to, const ext::vector < PushdownStoreSymbolType > & push );
 
    const ext::map < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > & getTransitions ( ) const &;
 
    ext::map < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > && getTransitions ( ) &&;
 
    ext::map < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > getTransitionsFromState ( const StateType & from ) const;
 
    ext::map < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > getTransitionsToState ( const StateType & to ) const;
 
    auto operator <=> ( const DPDA & other ) const {
        return std::tie(getStates(), getInputAlphabet(), getInitialState(), getFinalStates(), getPushdownStoreAlphabet(), getInitialSymbol(), transitions) <=> std::tie(other.getStates(), other.getInputAlphabet(), other.getInitialState(), other.getFinalStates(), other.getPushdownStoreAlphabet(), other.getInitialSymbol(), other.transitions);
    }
 
    bool operator == ( const DPDA & other ) const {
        return std::tie(getStates(), getInputAlphabet(), getInitialState(), getFinalStates(), getPushdownStoreAlphabet(), getInitialSymbol(), transitions) == std::tie(other.getStates(), other.getInputAlphabet(), other.getInitialState(), other.getFinalStates(), other.getPushdownStoreAlphabet(), other.getInitialSymbol(), other.transitions);
    }
 
    friend ext::ostream & operator << ( ext::ostream & out, const DPDA & instance ) {
        return out << "(DPDA"
               << " states = " << instance.getStates ( )
               << " inputAlphabet = " << instance.getInputAlphabet ( )
               << " initialState = " << instance.getInitialState ( )
               << " finalStates = " << instance.getFinalStates ( )
               << " pushdownStoreAlphabet = " << instance.getPushdownStoreAlphabet ( )
               << " initialSymbol = " << instance.getInitialSymbol ( )
               << " transitions = " << instance.getTransitions ( )
               << ")";
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::DPDA ( ext::set < StateType > states, ext::set < InputSymbolType > inputAlphabet, ext::set < PushdownStoreSymbolType > pushdownStoreAlphabet, StateType initialState, PushdownStoreSymbolType initialSymbol, ext::set < StateType > finalStates ) : core::Components < DPDA, ext::set < InputSymbolType >, component::Set, InputAlphabet, ext::set < PushdownStoreSymbolType >, component::Set, PushdownStoreAlphabet, PushdownStoreSymbolType, component::Value, InitialSymbol, ext::set < StateType >, component::Set, std::tuple < States, FinalStates >, StateType, component::Value, InitialState > ( std::move ( inputAlphabet ), std::move ( pushdownStoreAlphabet ), std::move ( initialSymbol ), std::move ( states ), std::move ( finalStates ), std::move ( initialState ) ) {
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::DPDA ( StateType initialState, PushdownStoreSymbolType initialPushdownSymbol) : DPDA ( ext::set < StateType > { initialState }, ext::set < InputSymbolType > { }, ext::set < PushdownStoreSymbolType > { initialPushdownSymbol }, initialState, initialPushdownSymbol, ext::set < StateType > { }) {
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::addTransition(StateType from, common::symbol_or_epsilon < InputSymbolType > input, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push) {
    if (! getStates().count(from)) {
        throw AutomatonException("State \"" + ext::to_string ( from ) + "\" doesn't exist.");
    }
 
    if (! input.is_epsilon ( ) && ! getInputAlphabet().count ( input.getSymbol ( ) ) ) {
        throw AutomatonException("Input symbol \"" + ext::to_string ( input ) + "\" doesn't exist.");
    }
 
    if (! getStates().count(to)) {
        throw AutomatonException("State \"" + ext::to_string ( to ) + "\" doesn't exist.");
    }
 
    for(const PushdownStoreSymbolType & popSymbol : pop) {
        if (! getPushdownStoreAlphabet().count(popSymbol)) {
            throw AutomatonException("Pushdown store symbol \"" + ext::to_string ( popSymbol ) + "\" doesn't exist.");
        }
    }
 
    for(const PushdownStoreSymbolType & pushSymbol : push) {
        if (! getPushdownStoreAlphabet().count(pushSymbol)) {
            throw AutomatonException("Pushdown store symbol \"" + ext::to_string ( pushSymbol ) + "\" doesn't exist.");
        }
    }
 
    ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> > key(std::move(from), std::move(input), std::move(pop));
    ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > value = ext::make_pair(std::move(to), std::move(push));
 
    if (transitions.find(key) != transitions.end()) {
        if(transitions.find(key)->second == value)
            return false;
        else
            throw AutomatonException ( "Transition (\"" + ext::to_string ( std::get<0>(key) ) + "\", \"" + ext::to_string ( std::get<1>(key) ) + "\", \"pop\") -> ?? already exists.");
    }
 
    if(std::get<1>(key).is_epsilon()) {
        if(std::any_of(transitions.begin(), transitions.end(), [&](const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > & transition) {
                if(std::get<0>(transition.first) == std::get<0>(key)) {
                    const ext::vector<PushdownStoreSymbolType>& alpha = std::get<2>(transition.first);
                    const ext::vector<PushdownStoreSymbolType>& beta = std::get<2>(key);
 
                    const ext::vector<PushdownStoreSymbolType>& shorter = (alpha.size() < beta.size()) ? alpha : beta;
                    const ext::vector<PushdownStoreSymbolType>& longer = (alpha.size() < beta.size()) ? beta : alpha;
 
                    for(auto itS = shorter.begin(), itL = longer.begin(); itS != shorter.end(); ++itS, ++itL) {
                        if(*itS != *itL) return false;
                    }
                    return true;
                }
                return false;
            }))
                throw AutomatonException("Conflicting transition");
    } else {
        if(std::any_of(transitions.begin(), transitions.end(), [&](const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > & transition) {
                if(std::get<0>(transition.first) == std::get<0>(key) && ( std::get<1>(transition.first) == std::get<1>(key) || std::get<1>(transition.first).is_epsilon() )) {
                    const ext::vector<PushdownStoreSymbolType>& alpha = std::get<2>(transition.first);
                    const ext::vector<PushdownStoreSymbolType>& beta = std::get<2>(key);
 
                    const ext::vector<PushdownStoreSymbolType>& shorter = (alpha.size() < beta.size()) ? alpha : beta;
                    const ext::vector<PushdownStoreSymbolType>& longer = (alpha.size() < beta.size()) ? beta : alpha;
 
                    for(auto itS = shorter.begin(), itL = longer.begin(); itS != shorter.end(); ++itS, ++itL) {
                        if(*itS != *itL) return false;
                    }
                    return true;
                }
                return false;
            }))
                throw AutomatonException("Conflicting transition");
    }
 
    transitions.insert ( std::move(key), std::move(value) );
    return true;
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::addTransition(StateType from, InputSymbolType input, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push) {
    common::symbol_or_epsilon < InputSymbolType > inputVariant(std::move(input));
    return addTransition(std::move(from), std::move(inputVariant), std::move(pop), std::move(to), std::move(push));
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::addTransition(StateType from, ext::vector < PushdownStoreSymbolType > pop, StateType to, ext::vector < PushdownStoreSymbolType > push) {
    auto inputVariant = common::symbol_or_epsilon < InputSymbolType > ( );
    return addTransition(std::move(from), std::move(inputVariant), std::move(pop), std::move(to), std::move(push));
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::removeTransition(const StateType& from, const common::symbol_or_epsilon < InputSymbolType >& input, const ext::vector < PushdownStoreSymbolType > & pop, const StateType& to, const ext::vector < PushdownStoreSymbolType > & push) {
    ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > > key(from, input, pop);
    ext::pair<StateType, ext::vector < PushdownStoreSymbolType > > value = ext::make_pair(to, push);
 
    if (transitions.find(key) == transitions.end())
        return false;
 
    if(transitions.find(key)->second != value)
        throw AutomatonException( "Transition (\"" + ext::to_string ( from ) + "\", \"" + ext::to_string ( input ) + "\") -> \"to\" doesn't exist.");
 
    transitions.erase(key);
    return true;
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::removeTransition(const StateType& from, const InputSymbolType& input, const ext::vector < PushdownStoreSymbolType > & pop, const StateType& to, const ext::vector < PushdownStoreSymbolType > & push) {
    common::symbol_or_epsilon < InputSymbolType > inputVariant(input);
    return removeTransition(from, inputVariant, pop, to, push);
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
bool DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::removeTransition(const StateType& from, const ext::vector < PushdownStoreSymbolType > & pop, const StateType& to, const ext::vector < PushdownStoreSymbolType > & push) {
    auto inputVariant = common::symbol_or_epsilon < InputSymbolType > ( );
    return removeTransition(from, inputVariant, pop, to, push);
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
const ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > & DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::getTransitions ( ) const & {
    return transitions;
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > && DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::getTransitions ( ) && {
    return std::move ( transitions );
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::getTransitionsFromState(const StateType& from) const {
    if( ! getStates().count(from) )
        throw AutomatonException("State \"" + ext::to_string ( from ) + "\" doesn't exist");
 
    ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > transitionsFromState;
    for ( const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > >& transition : transitions) {
        if (std::get<0>(transition.first) == from) {
            transitionsFromState.insert ( transition.first, transition.second );
        }
    }
 
    return transitionsFromState;
}
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >::getTransitionsToState(const StateType& to) const {
    if( ! getStates().count(to))
        throw AutomatonException("State \"" + ext::to_string ( to ) + "\" doesn't exist");
 
    ext::map<ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > > transitionsToState;
    for ( const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > >& transition : transitions) {
        if (transition.second.first == to) {
            transitionsToState.insert ( transition.first, transition.second );
        }
    }
 
    return transitionsToState;
}
 
} /* namespace automaton */
 
namespace core {
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class SetConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, InputSymbolType, automaton::InputAlphabet > {
public:
    static bool used ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const InputSymbolType & symbol ) {
        for ( const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > >& transition : automaton.getTransitions())
            if ( ! std::get<1>(transition.first).is_epsilon() && symbol == std::get<1>(transition.first).getSymbol())
                return true;
 
        return false;
    }
 
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const InputSymbolType & ) {
        return true;
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const InputSymbolType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class SetConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, PushdownStoreSymbolType, automaton::PushdownStoreAlphabet > {
public:
    static bool used ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const PushdownStoreSymbolType & symbol ) {
        if(automaton.getInitialSymbol() == symbol)
            return true;
 
        for ( const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > >& transition : automaton.getTransitions()) {
            const auto & popSymbols = std::get<2>(transition.first);
            const auto & pushSymbols = transition.second.second;
            if(ext::contains(popSymbols.begin(), popSymbols.end(), symbol ) || ext::contains(pushSymbols.begin(), pushSymbols.end(), symbol))
                return true;
        }
 
        return false;
    }
 
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const PushdownStoreSymbolType & ) {
        return true;
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const PushdownStoreSymbolType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class ElementConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, PushdownStoreSymbolType, automaton::InitialSymbol > {
public:
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const PushdownStoreSymbolType & symbol ) {
        return automaton.template accessComponent < automaton::PushdownStoreAlphabet > ( ).get ( ).count ( symbol );
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const PushdownStoreSymbolType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class SetConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, StateType, automaton::States > {
public:
    static bool used ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const StateType & state ) {
        if ( automaton.getInitialState ( ) == state )
            return true;
 
        if ( automaton.getFinalStates ( ).count ( state ) )
            return true;
 
        for ( const std::pair<const ext::tuple<StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector<PushdownStoreSymbolType> >, ext::pair<StateType, ext::vector<PushdownStoreSymbolType> > >& transition : automaton.getTransitions())
            if ( state == std::get<0>(transition.first) || transition.second.first == state )
                return true;
 
        return false;
    }
 
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const StateType & ) {
        return true;
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const StateType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class SetConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, StateType, automaton::FinalStates > {
public:
    static bool used ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const StateType & ) {
        return false;
    }
 
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const StateType & state ) {
        return automaton.template accessComponent < automaton::States > ( ).get ( ).count ( state );
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const StateType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
class ElementConstraint< automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType >, StateType, automaton::InitialState > {
public:
    static bool available ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > & automaton, const StateType & state ) {
        return automaton.template accessComponent < automaton::States > ( ).get ( ).count ( state );
    }
 
    static void valid ( const automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > &, const StateType & ) {
    }
};
 
template < class InputSymbolType, class PushdownStoreSymbolType, class StateType >
struct normalize < automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > > {
    static automaton::DPDA < > eval ( automaton::DPDA < InputSymbolType, PushdownStoreSymbolType, StateType > && value ) {
        ext::set < DefaultSymbolType > alphabet = alphabet::SymbolNormalize::normalizeAlphabet ( std::move ( value ).getInputAlphabet ( ) );
        ext::set < DefaultSymbolType > pushdownAlphabet = alphabet::SymbolNormalize::normalizeAlphabet ( std::move ( value ).getPushdownStoreAlphabet ( ) );
        DefaultSymbolType initialSymbol = alphabet::SymbolNormalize::normalizeSymbol ( std::move ( value ).getInitialSymbol ( ) );
        ext::set < DefaultStateType > states = automaton::AutomatonNormalize::normalizeStates ( std::move ( value ).getStates ( ) );
        DefaultStateType initialState = automaton::AutomatonNormalize::normalizeState ( std::move ( value ).getInitialState ( ) );
        ext::set < DefaultStateType > finalStates = automaton::AutomatonNormalize::normalizeStates ( std::move ( value ).getFinalStates ( ) );
 
        automaton::DPDA < > res ( std::move ( states ), std::move ( alphabet ), std::move ( pushdownAlphabet ), std::move ( initialState ), std::move ( initialSymbol ), std::move ( finalStates ) );
 
        for ( std::pair < ext::tuple < StateType, common::symbol_or_epsilon < InputSymbolType >, ext::vector < PushdownStoreSymbolType > >, ext::pair < StateType, ext::vector < PushdownStoreSymbolType > > > && transition : ext::make_mover ( std::move ( value ).getTransitions ( ) ) ) {
            ext::vector < DefaultSymbolType > pop = alphabet::SymbolNormalize::normalizeSymbols ( std::move ( std::get < 2 > ( transition.first ) ) );
            DefaultStateType from = automaton::AutomatonNormalize::normalizeState ( std::move ( std::get < 0 > ( transition.first ) ) );
            common::symbol_or_epsilon < DefaultSymbolType > input = automaton::AutomatonNormalize::normalizeSymbolEpsilon ( std::move ( std::get < 1 > ( transition.first ) ) );
 
            DefaultStateType to = automaton::AutomatonNormalize::normalizeState ( std::move ( transition.second.first ) );
            ext::vector < DefaultSymbolType > push = alphabet::SymbolNormalize::normalizeSymbols ( std::move ( transition.second.second ) );
 
            res.addTransition ( std::move ( from ), std::move ( input ), std::move ( pop ), std::move ( to ), std::move ( push ) );
        }
 
        return res;
    }
};
 
} /* namespace core */
 
extern template class automaton::DPDA < >;