com.singularsys.jep.configurableparser.matchers
Class RoundBracketGrammarMatcher

java.lang.Object
  com.singularsys.jep.configurableparser.matchers.RoundBracketGrammarMatcher

All Implemented Interfaces:

GrammarMatcher, java.io.Serializable

public class RoundBracketGrammarMatcher
extends java.lang.Object
implements GrammarMatcher

A GrammarMatcher which matches bracketed expressions.

See Also:

Serialized Form

Constructor Summary

RoundBracketGrammarMatcher(Token open, Token close)
Create a RoundBracketGrammarMatcher

Method Summary

void	init(Jep jep) Delayed initialization, this methods is called whenever components of the jep instance are changed.
Node	match(Lookahead2Iterator<Token> it, GrammarParser parser) Test whether the input matches this pattern.

Methods inherited from class java.lang.Object

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

Constructor Detail

RoundBracketGrammarMatcher

public RoundBracketGrammarMatcher(Token open,
                                  Token close)

Create a RoundBracketGrammarMatcher

Parameters:

open - token representing an opening bracket

close - token representing a closing bracket

Method Detail

init

public void init(Jep jep)

Description copied from interface: GrammarMatcher

Delayed initialization, this methods is called whenever components of the jep instance are changed.

Specified by:

init in interface GrammarMatcher

Parameters:

jep - the current jep instance.

match

public Node match(Lookahead2Iterator<Token> it,
                  GrammarParser parser)
           throws ParseException

Description copied from interface: GrammarMatcher

Test whether the input matches this pattern.

Specified by:

match in interface GrammarMatcher

Parameters:

it - An iterator inspecting the input

parser - the parser to use when evaluating sub expressions

Returns:

if matched returns a node representing the content, return null is does not match

Throws:

ParseException - if there is a syntactical error in the input.