Package eu.bandm.tools.lexic

Class TokenRule<T>

java.lang.Object

eu.bandm.tools.lexic.TokenRule<T>

Type Parameters:

T - the type of token types

public class TokenRule<T>
extends Object

Associates a token type with a syntax fragment.

The fragment must not match an empty sequence of code points.

See Also:

• Token

Constructor Summary

Constructors

Constructor	Description
TokenRule(T type, TokenFragment fragment)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
T	getType()	Returns the token type of this rule.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

TokenRule

public TokenRule(@Opt
 T type,
 TokenFragment fragment)

Creates a new instance.

Parameters:

type - the token type; whether null is acceptable is application-dependent

fragment - the syntax fragment

Throws:

NullPointerException - if fragment is null

IllegalArgumentException - if fragment matches an empty sequence of code points

Method Details

getType

@Opt
public T getType()

Returns the token type of this rule.

Returns:

the token type of this rule

toString

public String toString()

Overrides:

toString in class Object