27#include <ext/algorithm>
32#include <alib/variant>
46class TerminalAlphabet;
47class NonterminalAlphabet;
65template <
class TerminalSymbolType = DefaultSymbolType,
class NonterminalSymbolType = DefaultSymbolType >
66class CNF final :
public core::Components < CNF < TerminalSymbolType, NonterminalSymbolType >, ext::set < TerminalSymbolType >, component::Set, TerminalAlphabet, ext::set < NonterminalSymbolType >, component::Set, NonterminalAlphabet, NonterminalSymbolType, component::Value, InitialSymbol > {
75 bool generatesEpsilon;
83 explicit CNF ( NonterminalSymbolType initialSymbol );
148 bool removeRule (
const NonterminalSymbolType & leftHandSide,
const TerminalSymbolType & rightHandSide );
166 return this->
template accessComponent < InitialSymbol > ( ).get ( );
175 return std::move ( this->
template accessComponent < InitialSymbol > ( ).
get ( ) );
186 return this->
template accessComponent < InitialSymbol > ( ).set ( std::move ( symbol ) );
195 return this->
template accessComponent < NonterminalAlphabet > ( ).get ( );
204 return std::move ( this->
template accessComponent < NonterminalAlphabet > ( ).
get ( ) );
215 return this->
template accessComponent < NonterminalAlphabet > ( ).add ( std::move ( symbol ) );
224 this->
template accessComponent < NonterminalAlphabet > ( ).set ( std::move ( symbols ) );
233 return this->
template accessComponent < TerminalAlphabet > ( ).get ( );
242 return std::move ( this->
template accessComponent < TerminalAlphabet > ( ).
get ( ) );
253 return this->
template accessComponent < TerminalAlphabet > ( ).add ( std::move ( symbol ) );
262 this->
template accessComponent < TerminalAlphabet > ( ).set ( std::move ( symbols ) );
314 <<
" rules = " << instance.
getRules ( )
320template <
class TerminalSymbolType,
class NonterminalSymbolType >
324template <
class TerminalSymbolType,
class NonterminalSymbolType >
325CNF < TerminalSymbolType, NonterminalSymbolType >::CNF (
ext::set < NonterminalSymbolType > nonterminalAlphabet,
ext::set < TerminalSymbolType > terminalAlphabet, NonterminalSymbolType initialSymbol ) :
core::Components <
CNF,
ext::set < TerminalSymbolType >, component::Set, TerminalAlphabet,
ext::set < NonterminalSymbolType >, component::Set, NonterminalAlphabet, NonterminalSymbolType, component::Value, InitialSymbol > ( std::move ( terminalAlphabet), std::move ( nonterminalAlphabet ), std::move ( initialSymbol ) ), generatesEpsilon (
false ) {
328template <
class TerminalSymbolType,
class NonterminalSymbolType >
330 if ( !getNonterminalAlphabet ( ).count ( leftHandSide ) )
333 if ( rightHandSide.template is < TerminalSymbolType > ( ) ) {
334 if ( !getTerminalAlphabet ( ).count ( rightHandSide.template get < TerminalSymbolType > ( ) ) )
339 if ( !getNonterminalAlphabet ( ).count ( rhs.first ) )
342 if ( !getNonterminalAlphabet ( ).count ( rhs.second ) )
346 return rules[std::move ( leftHandSide )].insert ( std::move ( rightHandSide ) ).second;
349template <
class TerminalSymbolType,
class NonterminalSymbolType >
351 if ( !getNonterminalAlphabet ( ).count ( leftHandSide ) )
355 if ( element.template is < TerminalSymbolType > ( ) ) {
356 if ( !getTerminalAlphabet ( ).count ( element.template get < TerminalSymbolType > ( ) ) )
361 if ( !getNonterminalAlphabet ( ).count ( rhs.first ) )
364 if ( !getNonterminalAlphabet ( ).count ( rhs.second ) )
372template <
class TerminalSymbolType,
class NonterminalSymbolType >
377template <
class TerminalSymbolType,
class NonterminalSymbolType >
379 return std::move ( rules );
382template <
class TerminalSymbolType,
class NonterminalSymbolType >
384 return rules[leftHandSide].erase ( rightHandSide );
387template <
class TerminalSymbolType,
class NonterminalSymbolType >
391 return removeRule ( leftHandSide, rhs );
394template <
class TerminalSymbolType,
class NonterminalSymbolType >
398 return removeRule ( leftHandSide, rhs );
401template <
class TerminalSymbolType,
class NonterminalSymbolType >
403 generatesEpsilon = genEps;
406template <
class TerminalSymbolType,
class NonterminalSymbolType >
408 return generatesEpsilon;
421template <
class TerminalSymbolType,
class NonterminalSymbolType >
422class SetConstraint<
grammar::CNF < TerminalSymbolType, NonterminalSymbolType >, TerminalSymbolType, grammar::TerminalAlphabet > {
435 if ( ( rhs.template is < TerminalSymbolType > ( ) && ( rhs.template get < TerminalSymbolType > ( ) == symbol ) ) )
462 if (
grammar.template accessComponent < grammar::NonterminalAlphabet > ( ).get ( ).count (
ext::poly_comp ( symbol ) ) )
473template <
class TerminalSymbolType,
class NonterminalSymbolType >
474class SetConstraint<
grammar::CNF < TerminalSymbolType, NonterminalSymbolType >, NonterminalSymbolType, grammar::NonterminalAlphabet > {
486 if ( rule.first == symbol )
490 if ( rhs.template is < TerminalSymbolType > ( ) )
499 return grammar.template accessComponent < grammar::InitialSymbol > ( ).get ( ) == symbol;
523 if (
grammar.template accessComponent < grammar::TerminalAlphabet > ( ).get ( ).count (
ext::poly_comp ( symbol ) ) )
534template <
class TerminalSymbolType,
class NonterminalSymbolType >
535class ElementConstraint<
grammar::CNF < TerminalSymbolType, NonterminalSymbolType >, NonterminalSymbolType, grammar::InitialSymbol > {
546 return grammar.template accessComponent < grammar::NonterminalAlphabet > ( ).get ( ).count ( symbol );
564template <
class TerminalSymbolType,
class NonterminalSymbolType >
571 grammar::CNF < > res ( std::move ( nonterminals ), std::move ( terminals ), std::move ( initialSymbol ) );
581 res.addRules ( std::move ( lhs ), std::move ( rhs ) );
584 res.setGeneratesEpsilon ( value.getGeneratesEpsilon ( ) );
static ext::set< DefaultSymbolType > normalizeAlphabet(ext::set< SymbolType > &&symbols)
Definition: SymbolNormalize.h:50
static DefaultSymbolType normalizeSymbol(SymbolType &&symbol)
Definition: SymbolNormalize.h:68
Definition: components.hpp:181
static void valid(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &, const NonterminalSymbolType &)
Definition: CNF.h:555
static bool available(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &grammar, const NonterminalSymbolType &symbol)
Definition: CNF.h:545
Definition: components.hpp:25
static bool used(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &grammar, const NonterminalSymbolType &symbol)
Definition: CNF.h:484
static bool available(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &, const NonterminalSymbolType &)
Definition: CNF.h:510
static void valid(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &grammar, const NonterminalSymbolType &symbol)
Definition: CNF.h:522
static void valid(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &grammar, const TerminalSymbolType &symbol)
Definition: CNF.h:461
static bool available(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &, const TerminalSymbolType &)
Definition: CNF.h:449
static bool used(const grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &grammar, const TerminalSymbolType &symbol)
Definition: CNF.h:432
Definition: setComponents.hpp:26
Class extending the map class from the standard library. Original reason is to allow printing of the ...
Definition: map.hpp:48
Class extending the pair class from the standard library. Original reason is to allow printing of the...
Definition: pair.hpp:43
Implementation of the variant class allowing to store any type of those listed in the template parame...
Definition: variant.hpp:98
Chomsky normal form of a context free grammar in Chomsky hierarchy or type 2 in Chomsky hierarchy....
Definition: CNF.h:66
CNF(NonterminalSymbolType initialSymbol)
Creates a new instance of the grammar with a concrete initial symbol.
Definition: CNF.h:321
auto operator<=>(const CNF &other) const
Definition: CNF.h:286
bool addTerminalSymbol(TerminalSymbolType symbol)
Definition: CNF.h:252
void setTerminalAlphabet(ext::set< TerminalSymbolType > symbols)
Definition: CNF.h:261
void addRules(NonterminalSymbolType leftHandSide, ext::set< ext::variant< TerminalSymbolType, ext::pair< NonterminalSymbolType, NonterminalSymbolType > > > rightHandSide)
Add new rules of a grammar.
Definition: CNF.h:350
const NonterminalSymbolType & getInitialSymbol() const &
Definition: CNF.h:165
NonterminalSymbolType && getInitialSymbol() &&
Definition: CNF.h:174
bool addRule(NonterminalSymbolType leftHandSide, ext::variant< TerminalSymbolType, ext::pair< NonterminalSymbolType, NonterminalSymbolType > > rightHandSide)
Add a new rule of a grammar.
Definition: CNF.h:329
const ext::map< NonterminalSymbolType, ext::set< ext::variant< TerminalSymbolType, ext::pair< NonterminalSymbolType, NonterminalSymbolType > > > > & getRules() const &
Definition: CNF.h:373
void setGeneratesEpsilon(bool genEps)
Definition: CNF.h:402
friend ext::ostream & operator<<(ext::ostream &out, const CNF &instance)
Definition: CNF.h:309
void setNonterminalAlphabet(ext::set< NonterminalSymbolType > symbols)
Definition: CNF.h:223
bool getGeneratesEpsilon() const
Definition: CNF.h:407
ext::set< TerminalSymbolType > && getTerminalAlphabet() &&
Definition: CNF.h:241
bool setInitialSymbol(NonterminalSymbolType symbol)
Definition: CNF.h:185
bool removeRule(const NonterminalSymbolType &leftHandSide, const ext::variant< TerminalSymbolType, ext::pair< NonterminalSymbolType, NonterminalSymbolType > > &rightHandSide)
Definition: CNF.h:383
const ext::set< NonterminalSymbolType > & getNonterminalAlphabet() const &
Definition: CNF.h:194
ext::set< NonterminalSymbolType > && getNonterminalAlphabet() &&
Definition: CNF.h:203
bool operator==(const CNF &other) const
Definition: CNF.h:297
bool addNonterminalSymbol(NonterminalSymbolType symbol)
Definition: CNF.h:214
const ext::set< TerminalSymbolType > & getTerminalAlphabet() const &
Definition: CNF.h:232
Definition: GrammarException.h:15
static ext::pair< DefaultSymbolType, ext::vector< DefaultSymbolType > > normalizeRHS(ext::pair< FirstSymbolType, ext::vector< SecondSymbolType > > &&symbol)
Definition: GrammarNormalize.h:40
return res
Definition: MinimizeByPartitioning.h:145
Definition: normalize.hpp:10
constexpr tuple< Elements &... > tie(Elements &... args) noexcept
Helper of extended tuple of references construction. The tuple is constructed to reffer to values in ...
Definition: tuple.hpp:218
reference_mover< T > make_mover(T ¶m)
Move adaptor construction function specialized to lvalue reference parameter.
Definition: iterator.hpp:468
std::string to_string(const T &value)
To string method designated for objects that can be casted to string.
Definition: string.hpp:131
PolyComp< T > poly_comp(const T &inst)
Definition: functional.hpp:60
auto begin(Container &&cont) -> decltype(std::forward(cont).begin())
Definition: iterator.hpp:900
Definition: ToAutomaton.h:24
void end()
Definition: measurements.cpp:19
auto & get(ext::ptr_array< Type, N > &tpl)
Specialisation of get function for pointer arrays.
Definition: ptr_array.hpp:693
static grammar::CNF< > eval(grammar::CNF< TerminalSymbolType, NonterminalSymbolType > &&value)
Definition: CNF.h:566
Definition: normalize.hpp:13