org.unlaxer.tinyexpression.parser.StringExpressionParser Maven / Gradle / Ivy

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package org.unlaxer.tinyexpression.parser;

import java.util.List;

import org.unlaxer.parser.Parser;
import org.unlaxer.parser.Parsers;
import org.unlaxer.parser.ascii.PlusParser;
import org.unlaxer.parser.combinator.Choice;
import org.unlaxer.parser.combinator.WhiteSpaceDelimitedLazyChain;
import org.unlaxer.parser.combinator.ZeroOrMore;

public class StringExpressionParser extends WhiteSpaceDelimitedLazyChain{

	private static final long serialVersionUID = 3057326703009847594L;
	
	
	public StringExpressionParser() {
		super();
	}


	List parsers;

	
	@Override
	public void initialize() {
		
		// StringExpression:=StringTerm('+'StringTerm)*;
		parsers = 
			new Parsers(
				Parser.get(StringTermParser.class),
				new ZeroOrMore(
					new Choice(
						Parser.get(PlusParser.class),
						Parser.get(StringTermParser.class)
					)
				)
			);
	}


	@Override
	public List getLazyParsers() {
		return parsers;
	}
}