org.metasyntactic.math.automata.tool
Class BaseToken

java.lang.Object
  |
  +--org.metasyntactic.math.automata.tool.BaseToken

All Implemented Interfaces:

Token

public class BaseToken

extends java.lang.Object

implements Token

The most basic token that a lexical analyzer can pass to the parser. This class should be subclassed to add functionality such as: Keyword, Storing

Field Summary

protected java.util.List	lexeme The actual elements matched
protected int	location The position in the original input where the first element of the lexeme was matched
protected RegularExpression	pattern The pattern that matched this token

Constructor Summary

protected	BaseToken() Only for subclasses to call
	BaseToken(RegularExpression pattern, java.util.List lexeme, int location)

Method Summary

boolean	equals(java.lang.Object o)
boolean	equals(Token t)
java.util.List	getLexeme()
int	getLocation()
RegularExpression	getPattern()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

pattern

protected RegularExpression pattern

The pattern that matched this token

lexeme

protected java.util.List lexeme

The actual elements matched

location

protected int location

The position in the original input where the first element of the lexeme was matched

Constructor Detail

BaseToken

protected BaseToken()

Only for subclasses to call

BaseToken

public BaseToken(RegularExpression pattern,
                 java.util.List lexeme,
                 int location)

Method Detail

getPattern

public RegularExpression getPattern()

Specified by:

getPattern in interface Token

getLexeme

public java.util.List getLexeme()

Specified by:

getLexeme in interface Token

getLocation

public int getLocation()

Specified by:

getLocation in interface Token

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(Token t)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object