RegexStepMatcher.java

package org.jbehave.core.parsers;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.jbehave.core.model.StepPattern;
import org.jbehave.core.steps.StepType;

public class RegexStepMatcher implements StepMatcher {

    private final Pattern regexPattern;
	private final String[] parameterNames;
    private final StepPattern stepPattern;
    private Matcher matcher;

	public RegexStepMatcher(StepType stepType, String annotatedPattern, Pattern regexPattern, String[] parameterNames) {
        this.regexPattern = regexPattern;
		this.parameterNames = parameterNames;
        this.stepPattern = new StepPattern(stepType, annotatedPattern, regexPattern.pattern());
    }
	
	public boolean matches(String stepWithoutStartingWord){
		matcher(stepWithoutStartingWord);
		return matcher.matches();
	}

	public boolean find(String stepWithoutStartingWord){
		matcher(stepWithoutStartingWord);
		return matcher.find();
	}
	
	public String parameter(int matchedPosition) {
		return matcher.group(matchedPosition);
	}

	private void matcher(String patternToMatch){
		matcher = regexPattern.matcher(patternToMatch);
	}

	public String[] parameterNames(){
		return parameterNames;
	}

    public StepPattern pattern() {
        return stepPattern;
    }
}