ch.uzh.ifi.attempto.chartparser
Class CPNextTokenOptions

java.lang.Object
  ch.uzh.ifi.attempto.chartparser.CPNextTokenOptions

All Implemented Interfaces:

NextTokenOptions

public class CPNextTokenOptions
extends java.lang.Object
implements NextTokenOptions

This class represents a set of options that describe how a partial text can be continued according to a given grammar, and contains specific code for its use in the chart parser.

Author:

Tobias Kuhn

Method Summary

boolean	containsCategory(Preterminal c) Returns true if the given pre-terminal category represents a possible next token.
boolean	containsCategory(java.lang.String categoryName) Returns true if the specifed category represents a possible next token.
boolean	containsToken(java.lang.String token) Returns true if the specified token is a possible next token.
java.util.Set<CPAbstractOption>	getAbstractOptions() Returns the abstract options.
java.util.Set<CPAbstractOption>	getAbstractOptions(java.lang.String categoryName) Returns the abstract options that have a pre-terminal category with the specified name.
java.util.Set<CPConcreteOption>	getConcreteOptions() Returns the concrete options.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getAbstractOptions

public java.util.Set<CPAbstractOption> getAbstractOptions()

Description copied from interface: NextTokenOptions

Returns the abstract options.

Specified by:

getAbstractOptions in interface NextTokenOptions

Returns:

The set of abstract options.

getAbstractOptions

public java.util.Set<CPAbstractOption> getAbstractOptions(java.lang.String categoryName)

Returns the abstract options that have a pre-terminal category with the specified name.

Parameters:

categoryName - The name of the category.

Returns:

The set of abstract options with the respective category name.

getConcreteOptions

public java.util.Set<CPConcreteOption> getConcreteOptions()

Description copied from interface: NextTokenOptions

Returns the concrete options.

Specified by:

getConcreteOptions in interface NextTokenOptions

Returns:

The set of concrete options.

containsToken

public boolean containsToken(java.lang.String token)

Description copied from interface: NextTokenOptions

Returns true if the specified token is a possible next token.

Specified by:

containsToken in interface NextTokenOptions

Parameters:

token - The token text.

Returns:

true if it is a possible next token.

containsCategory

public boolean containsCategory(java.lang.String categoryName)

Description copied from interface: NextTokenOptions

Returns true if the specifed category represents a possible next token.

Specified by:

containsCategory in interface NextTokenOptions

Parameters:

categoryName - The name of the category.

Returns:

true if it represents a possible next token.

containsCategory

public boolean containsCategory(Preterminal c)

Returns true if the given pre-terminal category represents a possible next token.

Parameters:

c - The pre-terminal category.

Returns:

true if it represents a possible next token.