com.sonar.sslr.impl.channel

Class RegexpChannel

java.lang.Object

org.sonar.sslr.channel.Channel<Lexer>

com.sonar.sslr.impl.channel.RegexpChannel

public class RegexpChannel
extends Channel<Lexer>

Creates token of specified type from characters, which match given regular expression.

See Also:

RegexpChannelBuilder

Constructor Summary

Constructors

Constructor and Description
RegexpChannel(TokenType type, String regexp)

Method Summary

Modifier and Type	Method and Description
boolean	consume(CodeReader code, Lexer lexer) Tries to consume the character stream at the current reading cursor position (provided by the CodeReader).

Methods inherited from class java.lang.Object

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

Constructor Detail

RegexpChannel

public RegexpChannel(TokenType type,
                     String regexp)

Throws:

PatternSyntaxException - if the expression's syntax is invalid

Method Detail

consume

public boolean consume(CodeReader code,
                       Lexer lexer)

Description copied from class: Channel

Tries to consume the character stream at the current reading cursor position (provided by the CodeReader). If the character stream is consumed the method must return true and the OUTPUT object can be fed.

Specified by:

consume in class Channel<Lexer>

Parameters:

code - the handle on the input character stream

lexer - the OUTPUT that can be optionally fed by the Channel

Returns:

false if the Channel doesn't want to consume the character stream, true otherwise.