Represents a transition taken by the parser. More...

#include <transition.h>

Inheritance diagram for meta::parser::transition:

Classes
class	exception
	Exception thrown during interactions with transitions. More...

Public Types
enum	type_t { SHIFT = 0, REDUCE_L, REDUCE_R, UNARY, FINALIZE, IDLE }
	The transition types.

Public Member Functions
	transition (type_t t)
	Constructs a transition given a type. More...

	transition (type_t t, class_label lbl)
	Constructs a transition given a type and label. More...

type_t	type () const

const class_label &	label () const

bool	operator< (const transition &rhs) const

Private Attributes
type_t	type_
	The type of this transition.

util::optional< class_label >	label_
	The label of this transition, if it exists.

Detailed Description

Represents a transition taken by the parser.

Consists of a type and, for UNARY or REDUCE_L and REDUCE_R actions, a label.

Constructor & Destructor Documentation

meta::parser::transition::transition ( type_t t )

Constructs a transition given a type.

This constructor should be used for SHIFT, FINALIZE, and IDLE transitions.

Parameters

t	The transition type

meta::parser::transition::transition	(	type_t	t,
		class_label	lbl
	)

Constructs a transition given a type and label.

This constructor should be used for REDUCE_L, REDUCE_R, and UNARY transitions.

Parameters

t	The transition type
lbl	The label for the transition.

auto meta::parser::transition::type ( ) const

const class_label & meta::parser::transition::label ( ) const

bool meta::parser::transition::operator< ( const transition & rhs ) const

Parameters

rhs	The transition to compare against

Returns: whether the current transition is lexicographically less than the other transition

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