org.z3950.zing.cql
Class CQLLexer

java.lang.Object
  org.z3950.zing.cql.CQLLexer

All Implemented Interfaces:

CQLTokenizer

public class CQLLexer
extends Object
implements CQLTokenizer

Implementation of the CQL lexical syntax analyzer

Author:

jakub

Field Summary

Fields inherited from interface org.z3950.zing.cql.CQLTokenizer

TT_AND, TT_EOF, TT_EQEQ, TT_GE, TT_LE, TT_NE, TT_NOT, TT_NOTHING, TT_OR, TT_PROX, TT_SORTBY, TT_STRING, TT_WORD

Constructor Summary

CQLLexer(String cql, boolean debug)

Method Summary

static void	main(String[] args)
void	move() Consume next input token
int	pos()
String	render() Render the type and value of the last consumed token
String	render(int token, boolean quoteChars) Render specified token type
String	value() Return the value of the last consumed token
int	what() Return the type of the last consumed token

Methods inherited from class java.lang.Object

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

Constructor Detail

CQLLexer

public CQLLexer(String cql,
                boolean debug)

Method Detail

move

public void move()

Description copied from interface: CQLTokenizer

Consume next input token

Specified by:

move in interface CQLTokenizer

value

public String value()

Description copied from interface: CQLTokenizer

Return the value of the last consumed token

Specified by:

value in interface CQLTokenizer

Returns:

value of the token

what

public int what()

Description copied from interface: CQLTokenizer

Return the type of the last consumed token

Specified by:

what in interface CQLTokenizer

Returns:

last consumed token

render

public String render()

Description copied from interface: CQLTokenizer

Render the type and value of the last consumed token

Specified by:

render in interface CQLTokenizer

Returns:

human-readable string

render

public String render(int token,
                     boolean quoteChars)

Description copied from interface: CQLTokenizer

Render specified token type

Specified by:

render in interface CQLTokenizer

Parameters:

token - token type

quoteChars - true, if single characters should be quoted for readability

Returns:

human-readable string

pos

public int pos()

Specified by:

pos in interface CQLTokenizer

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception