Parser::State Class Reference

Parser base state. More...

#include <State.h>

Inheritance diagram for Parser::State:

Collaboration diagram for Parser::State:

List of all members.

Public Member Functions
	State (Sentence const &sentence, GlobalInfo *globalInfo)
	Constructor.
	State (State const &state)
bool	hasNext ()
State *	transition (Action action)
	Perform action represented by Action action.
State *	Shift ()
	Parsing actions.
State *	Right (Action action)
State *	Left (Action action)
State *	right (Action action)
State *	left (char const *action)
State *	DepLink (Action action)
State *	Extract ()
State *	Insert ()
Sentence *	getSentence ()
void	showStatus ()
Public Attributes
Sentence	sentence
	The current sentence.
TreeToken *	rootNode
	Dummy root node.
std::string	splitFeature
	used to split SVMs
Static Public Attributes
static Tanl::Text::RegExp::Pattern	ispunct
	Pattern for detecting punctuation:.
Protected Member Functions
virtual TreeToken *	copy (TreeToken *x)
void	predicates (Features &preds, Action action=0)
	Collect features representing context.
Protected Attributes
SentenceInfo *	sentenceInfo
std::vector< TreeToken * >	input
	Stack from which input tokens are extracted.
std::vector< TreeToken * >	stack
	Stack where analyzed tokens are accumulated.
std::vector< TreeToken * >	extracted
	Stack where extracted tokens are accumulated.
State const *	previous
	The previous State in the derivation.
Action	action
	The action that lead to this state.
int	verbCount
	Number of verbs so far.
Static Protected Attributes
static Tanl::Text::RegExp::Pattern	nonWordAscii
	Weird version of ispunct.

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Detailed Description

Parser base state.

Definition at line 72 of file State.h.

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Constructor & Destructor Documentation

Parser::State::State	(	Sentence const &	sentence,
		GlobalInfo *	globalInfo
	)

Constructor.

Parameters:

	sentence	the sentence to be parsed.
	globalInfo,global	parse information.

Definition at line 124 of file State.cpp.

References input, rootNode, and stack.

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Member Function Documentation

bool Parser::State::hasNext

(

)

Returns:

whether this is a final state.

Reimplemented in Parser::TrainState, and Parser::ParseState.

Definition at line 138 of file State.cpp.

References input.

State * Parser::State::transition

(

Action

action

)

Perform action represented by Action action.

Perform a parsing action.

Returns:

next State, or NULL if action failed.

Actions can be: Left, Right, Shift, Left2, Right2, Left3, Right3, Extract, Insert. Left and Right operate on top of stack and next sentence token. Left2 and Right2 operate on second top of stack and next sentence token. Left3 and Right3 operate on third top of stack and next sentence token. Extract and Insert, move/restore token to/from extracted.

The reduce actions (Left/Right) are combined with the deprel to be assigned to the link created. If CompositeAction is false, instead, there are separate additional actions DepLeft and DepRight, used to assign the label to a link created with the preceding reduce action. DepLeft and DepRight are paired with the dependency label to be assigned.

Returns:

the new State after the transition.

Reimplemented in Parser::ParseState.

Definition at line 336 of file State.cpp.

References input, Shift(), and stack.

Referenced by Parser::EventStream::next(), and Parser::ParseState::transition().

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

• src/State.h
• src/State.cpp