tetengo::lattice::node Class Reference

A node. More...

#include <node.hpp>

Inheritance diagram for tetengo::lattice::node:

Collaboration diagram for tetengo::lattice::node:

Public Member Functions
constexpr	node (const input *p_key, const std::any *p_value, std::size_t index_in_step, std::size_t preceding_step, const std::vector< int > *p_preceding_edge_costs, std::size_t best_preceding_node, int node_cost, int path_cost)
	Creates a node.
constexpr	node (const entry_view &entry, std::size_t index_in_step, std::size_t preceding_step, const std::vector< int > *p_preceding_edge_costs, std::size_t best_preceding_node, int path_cost)
	Creates a node from a vocabulary entry.
constexpr const input *	p_key () const
	Returns the key.
constexpr const std::any &	value () const
	Returns the value.
constexpr std::size_t	index_in_step () const
	Returns the index in the step.
constexpr std::size_t	preceding_step () const
	Returns the index of the preceding step.
constexpr const std::vector< int > &	preceding_edge_costs () const
	Returns the preceding edge costs.
constexpr std::size_t	best_preceding_node () const
	Returns the index of the best preceding node.
constexpr int	node_cost () const
	Returns the node cost.
constexpr int	path_cost () const
	Returns the path cost.
bool	is_bos () const
	Returns true is this node is the BOS.

Static Public Member Functions
static node	bos (const std::vector< int > *p_preceding_edge_costs)
	Returns the BOS (Beginning of Sequence).
static node	eos (std::size_t preceding_step, const std::vector< int > *p_preceding_edge_costs, std::size_t best_preceding_node, int path_cost)
	Returns an EOS (End of Sequence).

Friends
constexpr bool	operator== (const node &one, const node &another)
	Returns true if one node is equal to another.

Detailed Description

A node.

Constructor & Destructor Documentation

node() [1/2]

constexpr tetengo::lattice::node::node ( const input *  p_key, const std::any *  p_value, std::size_t  index_in_step, std::size_t  preceding_step, const std::vector< int > *  p_preceding_edge_costs, std::size_t  best_preceding_node, int  node_cost, int  path_cost  )

inlineconstexpr

Creates a node.

Parameters

p_key	A pointer to a key.
p_value	A pointer to a value.
index_in_step	An index in the step.
preceding_step	An index of a preceding step.
p_preceding_edge_costs	A pointer to preceding edge costs.
best_preceding_node	An index of a best preceding node.
node_cost	A node cost.
path_cost	A path cost.

node() [2/2]

constexpr tetengo::lattice::node::node ( const entry_view &  entry, std::size_t  index_in_step, std::size_t  preceding_step, const std::vector< int > *  p_preceding_edge_costs, std::size_t  best_preceding_node, int  path_cost  )

inlineconstexpr

Creates a node from a vocabulary entry.

Parameters

entry	An entry.
index_in_step	An index in the step.
preceding_step	An index of a preceding step.
p_preceding_edge_costs	A pointer to preceding edge costs.
best_preceding_node	An index of a best preceding node.
path_cost	A path cost.

Exceptions

std::invalid_argument

When p_preceding_edge_costs is nullptr.

Member Function Documentation

best_preceding_node()

constexpr std::size_t tetengo::lattice::node::best_preceding_node ( ) const

inlineconstexpr

Returns the index of the best preceding node.

Returns

The index of the best preceding node.

bos()

static node tetengo::lattice::node::bos ( const std::vector< int > *  p_preceding_edge_costs )

static

Returns the BOS (Beginning of Sequence).

Parameters

p_preceding_edge_costs

A pointer to preceding edge costs.

Returns

The BOS.

Exceptions

std::invalid_argument

When p_preceding_edge_costs is nullptr.

eos()

static node tetengo::lattice::node::eos ( std::size_t  preceding_step, const std::vector< int > *  p_preceding_edge_costs, std::size_t  best_preceding_node, int  path_cost  )

static

Returns an EOS (End of Sequence).

Parameters

preceding_step	An index of a preceding step.
p_preceding_edge_costs	A pointer to preceding edge costs.
best_preceding_node	An index of a best preceding node.
path_cost	A path cost.

Returns

An EOS.

Exceptions

std::invalid_argument

When p_preceding_edge_costs is nullptr.

index_in_step()

constexpr std::size_t tetengo::lattice::node::index_in_step ( ) const

inlineconstexpr

Returns the index in the step.

Returns

The index in the step.

is_bos()

bool tetengo::lattice::node::is_bos

(

)

const

Returns true is this node is the BOS.

Return values

true	When this node is the BOS.
false	Otherwise.

node_cost()

constexpr int tetengo::lattice::node::node_cost ( ) const

inlineconstexpr

Returns the node cost.

Returns

The node cost.

p_key()

constexpr const input * tetengo::lattice::node::p_key ( ) const

inlineconstexpr

Returns the key.

Returns

The key.

path_cost()

constexpr int tetengo::lattice::node::path_cost ( ) const

inlineconstexpr

Returns the path cost.

Returns

The path cost.

preceding_edge_costs()

constexpr const std::vector< int > & tetengo::lattice::node::preceding_edge_costs ( ) const

inlineconstexpr

Returns the preceding edge costs.

Returns

The preceding edge costs.

preceding_step()

constexpr std::size_t tetengo::lattice::node::preceding_step ( ) const

inlineconstexpr

Returns the index of the preceding step.

Returns

The index of the preceding step.

value()

constexpr const std::any & tetengo::lattice::node::value ( ) const

inlineconstexpr

Returns the value.

Returns

The value.

Friends And Related Symbol Documentation

operator==

constexpr bool operator== ( const node &  one, const node &  another  )

friend

Returns true if one node is equal to another.

Parameters

one	One node.
another	Another node.

Return values

true	When one node is equal to another.
valse	Otherwise.

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

• library/lattice/cpp/include/tetengo/lattice/node.hpp