Compute the derived-term automaton from an expression. More...

#include <derived-term.hh>

Inheritance diagram for vcsn::detail::derived_term_automaton_impl< ExpSet >:

Collaboration diagram for vcsn::detail::derived_term_automaton_impl< ExpSet >:

Public Types
using	expressionset_t = ExpSet

using	expression_t = typename expressionset_t::value_t
	Our state names: expressions. More...

using	context_t = context_t_of< expressionset_t >

using	weightset_t = weightset_t_of< context_t >

using	automaton_t = expression_automaton< mutable_automaton< context_t >>
	The type of the (strict) automaton we build. More...

using	state_t = state_t_of< automaton_t >

using	self_t = derived_term_automaton_impl
	This class. More...

using	super_t = automaton_decorator< automaton_t >
	Base class. More...

using	polynomialset_t = rat::expression_polynomialset_t< expressionset_t >
	The polynomialset for expressions. More...

using	expansionset_t = rat::expansionset< expressionset_t >
	Might be needed to determinize. More...

using	to_expansion_t = rat::to_expansion_visitor< expressionset_t >
	Used for expansions. More...

Public Types inherited from vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >
using	automaton_t = Aut
	The type of automaton to wrap. More...

using	context_t = context_t_of< Aut >

using	element_type = typename automaton_t::element_type
	The automaton type, without shared_ptr. More...

using	fresh_automaton_t = typename element_type::template fresh_automaton_t< Ctx >
	The (shared pointer) type to use it we have to create an automaton of the same (underlying) type. More...

using	kind_t = typename context_t::kind_t

using	labelset_t = typename context_t::labelset_t

using	labelset_ptr = typename context_t::labelset_ptr

using	label_t = typename labelset_t::value_t

using	weightset_t = typename context_t::weightset_t

using	weightset_ptr = typename context_t::weightset_ptr

using	weight_t = typename weightset_t::value_t

using	state_t = state_t_of< automaton_t >

using	transition_t = transition_t_of< automaton_t >

Public Member Functions
std::ostream &	print_set (std::ostream &o, format fmt={}) const

	derived_term_automaton_impl (const expressionset_t &rs, derived_term_algo algo)

automaton_t	operator() (const expression_t &exp)
	Compute the derived-term automaton. More...

automaton_t	via_derivation (const expression_t &exp)
	Compute the derived-term automaton via derivation. More...

automaton_t	via_expansion (const expression_t &exp)
	Compute the derived-term automaton via expansion. More...

void	init_ (const expression_t &exp)
	Initialize the computation: build the initial states. More...

void	complete_ (state_t s) const
	Complete a state: find its outgoing transitions. More...

auto	all_out (state_t s) const -> decltype(vcsn::detail::all_out(aut_, s))
	All the outgoing transitions. More...

template<typename ES = expressionset_t, typename = std::enable_if<labelset_t_of<ES>::is_free()>>
void	complete_via_derivation_ (state_t s, const expression_t &src)
	Compute the outgoing transitions of src. More...

void	complete_via_expansion_ (state_t s, const expression_t &src)
	Compute the outgoing transitions of src. More...

Public Member Functions inherited from vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >
	automaton_decorator (automaton_t aut)

	automaton_decorator (const automaton_decorator &aut)

	automaton_decorator (const context_t &ctx)

	automaton_decorator (automaton_decorator &&aut)

automaton_decorator &	operator= (automaton_decorator &&that)

automaton_t	strip ()
	The automaton we decorate. More...

auto	all_in (Args &&...args) const -> decltype(aut_-> all_in(std::forward< Args >(args)...))

auto	all_out (Args &&...args) const -> decltype(aut_-> all_out(std::forward< Args >(args)...))

auto	all_states (Args &&...args) const -> decltype(aut_-> all_states(std::forward< Args >(args)...))

auto	all_transitions (Args &&...args) const -> decltype(aut_-> all_transitions(std::forward< Args >(args)...))

auto	context (Args &&...args) const -> decltype(aut_-> context(std::forward< Args >(args)...))

auto	dst_of (Args &&...args) const -> decltype(aut_-> dst_of(std::forward< Args >(args)...))

auto	get_final_weight (Args &&...args) const -> decltype(aut_-> get_ final _weight(std

auto	get_initial_weight (Args &&...args) const -> decltype(aut_-> get_initial_weight(std::forward< Args >(args)...))

auto	get_transition (Args &&...args) const -> decltype(aut_-> get_transition(std::forward< Args >(args)...))

auto	has_state (Args &&...args) const -> decltype(aut_-> has_state(std::forward< Args >(args)...))

auto	has_transition (Args &&...args) const -> decltype(aut_-> has_transition(std::forward< Args >(args)...))

auto	is_final (Args &&...args) const -> decltype(aut_-> is_ final(std

auto	is_initial (Args &&...args) const -> decltype(aut_-> is_initial(std::forward< Args >(args)...))

auto	label_of (Args &&...args) const -> decltype(aut_-> label_of(std::forward< Args >(args)...))

auto	labelset (Args &&...args) const -> decltype(aut_-> labelset(std::forward< Args >(args)...))

auto	num_all_states (Args &&...args) const -> decltype(aut_-> num_all_states(std::forward< Args >(args)...))

auto	num_finals (Args &&...args) const -> decltype(aut_-> num_ final s(std

auto	num_initials (Args &&...args) const -> decltype(aut_-> num_initials(std::forward< Args >(args)...))

auto	num_states (Args &&...args) const -> decltype(aut_-> num_states(std::forward< Args >(args)...))

auto	num_transitions (Args &&...args) const -> decltype(aut_-> num_transitions(std::forward< Args >(args)...))

auto	prepost_label (Args &&...args) const -> decltype(aut_-> prepost_label(std::forward< Args >(args)...))

auto	print (Args &&...args) const -> decltype(aut_-> print(std::forward< Args >(args)...))

auto	print_set (Args &&...args) const -> decltype(aut_-> print_set(std::forward< Args >(args)...))

auto	print_state (Args &&...args) const -> decltype(aut_-> print_state(std::forward< Args >(args)...))

auto	print_state_name (Args &&...args) const -> decltype(aut_-> print_state_name(std::forward< Args >(args)...))

auto	src_of (Args &&...args) const -> decltype(aut_-> src_of(std::forward< Args >(args)...))

auto	state_has_name (Args &&...args) const -> decltype(aut_-> state_has_name(std::forward< Args >(args)...))

auto	is_lazy (Args &&...args) const -> decltype(aut_-> is_lazy(std::forward< Args >(args)...))

auto	is_lazy_in (Args &&...args) const -> decltype(aut_-> is_lazy_in(std::forward< Args >(args)...))

auto	states (Args &&...args) const -> decltype(aut_-> states(std::forward< Args >(args)...))

auto	weight_of (Args &&...args) const -> decltype(aut_-> weight_of(std::forward< Args >(args)...))

auto	weightset (Args &&...args) const -> decltype(aut_-> weightset(std::forward< Args >(args)...))

auto	add_final (Args &&...args) -> decltype(aut_-> add_ final(std

auto	add_initial (Args &&...args) -> decltype(aut_-> add_initial(std::forward< Args >(args)...))

auto	add_transition (Args &&...args) -> decltype(aut_-> add_transition(std::forward< Args >(args)...))

auto	add_transition_copy (Args &&...args) -> decltype(aut_-> add_transition_copy(std::forward< Args >(args)...))

auto	add_weight (Args &&...args) -> decltype(aut_-> add_weight(std::forward< Args >(args)...))

auto	del_state (Args &&...args) -> decltype(aut_-> del_state(std::forward< Args >(args)...))

auto	del_transition (Args &&...args) -> decltype(aut_-> del_transition(std::forward< Args >(args)...))

auto	lweight (Args &&...args) -> decltype(aut_-> lweight(std::forward< Args >(args)...))

auto	new_state (Args &&...args) -> decltype(aut_-> new_state(std::forward< Args >(args)...))

auto	new_transition (Args &&...args) -> decltype(aut_-> new_transition(std::forward< Args >(args)...))

auto	new_transition_copy (Args &&...args) -> decltype(aut_-> new_transition_copy(std::forward< Args >(args)...))

auto	rweight (Args &&...args) -> decltype(aut_-> rweight(std::forward< Args >(args)...))

auto	set_final (Args &&...args) -> decltype(aut_-> set_ final(std

auto	set_lazy (Args &&...args) -> decltype(aut_-> set_lazy(std::forward< Args >(args)...))

auto	set_lazy_in (Args &&...args) -> decltype(aut_-> set_lazy_in(std::forward< Args >(args)...))

auto	set_initial (Args &&...args) -> decltype(aut_-> set_initial(std::forward< Args >(args)...))

auto	set_transition (Args &&...args) -> decltype(aut_-> set_transition(std::forward< Args >(args)...))

auto	set_weight (Args &&...args) -> decltype(aut_-> set_weight(std::forward< Args >(args)...))

auto	unset_final (Args &&...args) -> decltype(aut_-> unset_ final(std

auto	unset_initial (Args &&...args) -> decltype(aut_-> unset_initial(std::forward< Args >(args)...))

Static Public Member Functions
static symbol	sname ()

Static Public Member Functions inherited from vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >
static constexpr auto	lazy_transition (Args &&...args) -> decltype(element_type::lazy_transition(std::forward< Args >(args)...))

static constexpr auto	null_state (Args &&...args) -> decltype(element_type::null_state(std::forward< Args >(args)...))

static constexpr auto	null_transition (Args &&...args) -> decltype(element_type::null_transition(std::forward< Args >(args)...))

static constexpr auto	post (Args &&...args) -> decltype(element_type::post(std::forward< Args >(args)...))

static constexpr auto	pre (Args &&...args) -> decltype(element_type::pre(std::forward< Args >(args)...))

static constexpr auto	sname (Args &&...args) -> decltype(element_type::sname(std::forward< Args >(args)...))

Public Attributes
expressionset_t	rs_
	The expression's set. More...

weightset_t	ws_ = *rs_.weightset()
	Its weightset. More...

polynomialset_t	ps_ = make_expression_polynomialset(rs_)

derived_term_algo	algo_
	How derived terms are computed. More...

expansionset_t	es_ = {rs_}

to_expansion_t	to_expansion_ = {rs_}

derived_term_automaton_members< expressionset_t >	members_ = {rs_}
	Possibly the generators. More...

Additional Inherited Members
Protected Attributes inherited from vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >
automaton_t	aut_
	The wrapped automaton, possibly const. More...

Detailed Description

template<typename ExpSet>
class vcsn::detail::derived_term_automaton_impl< ExpSet >

Compute the derived-term automaton from an expression.

Supports derivation/expansion as its core computation, with breaking/non breaking flavors for both.

The handling of initial and final states can be simplified by working on a delimited rational expression ( $r$ with $ being the special label), and mapping $r$ to pre(), and \e to post(). Then, there is no special treatment needed to handle the initial split in the case of a breaking derivation, and there is no special need to handle the final transitions.

However there are two problems.

One is that derivation loops over the alphabets, so we have to add $, the special label, to the alphabet. But then, the handling of complement starts making idiotic things by trying to add $-labels in inner transitions. This is a real problem, with no clear work-around.

But this is not an issue for expansion-based construction. However it means that the states are no longer labeled by the expressions as the user would expect them: there is always the terminating $. Not showing it does not address the issue, which is why we'd rather not have it at all.

So, after experimentation, as of 2014-10, I prefer not to use the pre/post based construct in either case.

Definition at line 129 of file derived-term.hh.

Member Typedef Documentation

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::automaton_t = expression_automaton<mutable_automaton<context_t>>

The type of the (strict) automaton we build.

Definition at line 141 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::context_t = context_t_of<expressionset_t>

Definition at line 137 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::expansionset_t = rat::expansionset<expressionset_t>

Might be needed to determinize.

Definition at line 301 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::expression_t = typename expressionset_t::value_t

Our state names: expressions.

Definition at line 135 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::expressionset_t = ExpSet

Definition at line 133 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::polynomialset_t = rat::expression_polynomialset_t<expressionset_t>

The polynomialset for expressions.

Definition at line 295 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::self_t = derived_term_automaton_impl

This class.

Definition at line 145 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::state_t = state_t_of<automaton_t>

Definition at line 142 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::super_t = automaton_decorator<automaton_t>

Base class.

Definition at line 147 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::to_expansion_t = rat::to_expansion_visitor<expressionset_t>

Used for expansions.

Definition at line 304 of file derived-term.hh.

template<typename ExpSet >

using vcsn::detail::derived_term_automaton_impl< ExpSet >::weightset_t = weightset_t_of<context_t>

Definition at line 138 of file derived-term.hh.

Constructor & Destructor Documentation

template<typename ExpSet >

vcsn::detail::derived_term_automaton_impl< ExpSet >::derived_term_automaton_impl	(	const expressionset_t &	rs,
		derived_term_algo	algo
	)

inline

Definition at line 163 of file derived-term.hh.

References vcsn::detail::derived_term_automaton_impl< ExpSet >::algo_, vcsn::detail::derived_term_automaton_impl< ExpSet >::members_, vcsn::detail::rs, and vcsn::detail::derived_term_automaton_impl< ExpSet >::rs_.

Member Function Documentation

template<typename ExpSet >

auto vcsn::detail::derived_term_automaton_impl< ExpSet >::all_out ( state_t s ) const -> decltype(vcsn::detail::all_out(aut_, s))

inline

All the outgoing transitions.

Definition at line 236 of file derived-term.hh.

References vcsn::detail::all_out(), vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_(), and vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::is_lazy().

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template<typename ExpSet >

void vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_ ( state_t s ) const

inline

Complete a state: find its outgoing transitions.

Definition at line 228 of file derived-term.hh.

References vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, and vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_().

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::all_out().

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template<typename ExpSet >

template<typename ES = expressionset_t, typename = std::enable_if<labelset_t_of<ES>::is_free()>>

void vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_	(	state_t	s,
		const expression_t &	src
	)

inline

Compute the outgoing transitions of src.

Definition at line 247 of file derived-term.hh.

References vcsn::detail::derived_term_automaton_impl< ExpSet >::algo_, vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, vcsn::detail::derived_term_algo::breaking, vcsn::constant_term(), vcsn::derivation(), vcsn::detail::derived_term_algo::determinize, vcsn::detail::derived_term_automaton_members< ExpSet, bool >::gens, vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::label_of(), vcsn::detail::derived_term_automaton_impl< ExpSet >::members_, vcsn::detail::derived_term_automaton_impl< ExpSet >::ps_, vcsn::detail::derived_term_automaton_impl< ExpSet >::rs_, and vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::weight_of().

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::via_derivation().

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template<typename ExpSet >

void vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_	(	state_t	s,
		const expression_t &	src
	)

inline

Compute the outgoing transitions of src.

Definition at line 266 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::via_expansion().

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template<typename ExpSet >

void vcsn::detail::derived_term_automaton_impl< ExpSet >::init_ ( const expression_t & exp )

inline

Initialize the computation: build the initial states.

Definition at line 218 of file derived-term.hh.

References vcsn::detail::derived_term_automaton_impl< ExpSet >::algo_, vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, vcsn::detail::derived_term_algo::breaking, vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::label_of(), vcsn::detail::derived_term_automaton_impl< ExpSet >::rs_, vcsn::split(), vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::weight_of(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::ws_.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::via_derivation(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::via_expansion().

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template<typename ExpSet >

automaton_t vcsn::detail::derived_term_automaton_impl< ExpSet >::operator() ( const expression_t & exp )

inline

Compute the derived-term automaton.

Definition at line 172 of file derived-term.hh.

References vcsn::detail::derived_term_algo::algo, vcsn::detail::derived_term_automaton_impl< ExpSet >::algo_, vcsn::detail::derived_term_algo::derivation, vcsn::detail::derived_term_automaton_impl< ExpSet >::rs_, vcsn::to_string(), vcsn::detail::derived_term_automaton_impl< ExpSet >::via_derivation(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::via_expansion().

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template<typename ExpSet >

std::ostream& vcsn::detail::derived_term_automaton_impl< ExpSet >::print_set	(	std::ostream &	o,
		format	fmt = `{}`
	)		const

inline

Definition at line 157 of file derived-term.hh.

template<typename ExpSet >

static symbol vcsn::detail::derived_term_automaton_impl< ExpSet >::sname ( )

inlinestatic

Definition at line 149 of file derived-term.hh.

References vcsn::res, and vcsn::sname().

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template<typename ExpSet >

automaton_t vcsn::detail::derived_term_automaton_impl< ExpSet >::via_derivation ( const expression_t & exp )

inline

Compute the derived-term automaton via derivation.

Definition at line 188 of file derived-term.hh.

References vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::init_().

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::operator()().

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template<typename ExpSet >

automaton_t vcsn::detail::derived_term_automaton_impl< ExpSet >::via_expansion ( const expression_t & exp )

inline

Compute the derived-term automaton via expansion.

Definition at line 201 of file derived-term.hh.

References vcsn::detail::automaton_decorator< expression_automaton< mutable_automaton< context_t_of< ExpSet > > > >::aut_, vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::init_().

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::operator()().

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Member Data Documentation

template<typename ExpSet >

derived_term_algo vcsn::detail::derived_term_automaton_impl< ExpSet >::algo_

How derived terms are computed.

Definition at line 298 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_(), vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_(), vcsn::detail::derived_term_automaton_impl< ExpSet >::derived_term_automaton_impl(), vcsn::detail::derived_term_automaton_impl< ExpSet >::init_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::operator()().

template<typename ExpSet >

expansionset_t vcsn::detail::derived_term_automaton_impl< ExpSet >::es_ = {rs_}

Definition at line 302 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_().

template<typename ExpSet >

derived_term_automaton_members<expressionset_t> vcsn::detail::derived_term_automaton_impl< ExpSet >::members_ = {rs_}

Possibly the generators.

Definition at line 307 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::derived_term_automaton_impl().

template<typename ExpSet >

polynomialset_t vcsn::detail::derived_term_automaton_impl< ExpSet >::ps_ = make_expression_polynomialset(rs_)

Definition at line 296 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_().

template<typename ExpSet >

expressionset_t vcsn::detail::derived_term_automaton_impl< ExpSet >::rs_

The expression's set.

Definition at line 291 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_derivation_(), vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_(), vcsn::detail::derived_term_automaton_impl< ExpSet >::derived_term_automaton_impl(), vcsn::detail::derived_term_automaton_impl< ExpSet >::init_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::operator()().

template<typename ExpSet >

to_expansion_t vcsn::detail::derived_term_automaton_impl< ExpSet >::to_expansion_ = {rs_}

Definition at line 305 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_().

template<typename ExpSet >

weightset_t vcsn::detail::derived_term_automaton_impl< ExpSet >::ws_ = *rs_.weightset()

Its weightset.

Definition at line 293 of file derived-term.hh.

Referenced by vcsn::detail::derived_term_automaton_impl< ExpSet >::complete_via_expansion_(), and vcsn::detail::derived_term_automaton_impl< ExpSet >::init_().

The documentation for this class was generated from the following file:

vcsn/algos/derived-term.hh

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

template<typename ExpSet> class vcsn::detail::derived_term_automaton_impl< ExpSet >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename ExpSet>
class vcsn::detail::derived_term_automaton_impl< ExpSet >