/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.access.boolex;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import ch.qos.logback.access.spi.IAccessEvent;
  import ch.qos.logback.core.CoreConstants;
  import ch.qos.logback.core.boolex.JaninoEventEvaluatorBase;
  import ch.qos.logback.core.boolex.Matcher;
  
  public class JaninoEventEvaluator extends JaninoEventEvaluatorBase<IAccessEvent> {
  
    public final static List<String> DEFAULT_PARAM_NAME_LIST = new ArrayList<String>();
    public final static List<Class> DEFAULT_PARAM_TYPE_LIST = new ArrayList<Class>();
  
    static {
      DEFAULT_PARAM_NAME_LIST.add("event");
      DEFAULT_PARAM_TYPE_LIST.add(IAccessEvent.class);
    }
  
  
    protected String getDecoratedExpression() {
      String expression = getExpression();
      if (!expression.contains("return")) {
        expression = "return " + expression + ";";
        addInfo("Adding [return] prefix and a semicolon suffix. Expression becomes [" + expression + "]");
        addInfo("See also " + CoreConstants.CODES_URL + "#block");
      }
      return expression;
    }
  
    protected String[] getParameterNames() {
      List<String> fullNameList = new ArrayList<String>();
      fullNameList.addAll(DEFAULT_PARAM_NAME_LIST);
  
      for (int i = 0; i < matcherList.size(); i++) {
        Matcher m = (Matcher) matcherList.get(i);
        fullNameList.add(m.getName());
      }
  
      return (String[]) fullNameList.toArray(CoreConstants.EMPTY_STRING_ARRAY);
    }
  
    protected Class[] getParameterTypes() {
      List<Class> fullTypeList = new ArrayList<Class>();
      fullTypeList.addAll(DEFAULT_PARAM_TYPE_LIST);
      for (int i = 0; i < matcherList.size(); i++) {
        fullTypeList.add(Matcher.class);
      }
      return (Class[]) fullTypeList.toArray(CoreConstants.EMPTY_CLASS_ARRAY);
    }
  
    protected Object[] getParameterValues(IAccessEvent accessEvent) {
      final int matcherListSize = matcherList.size();
  
      int i = 0;
      Object[] values = new Object[DEFAULT_PARAM_NAME_LIST.size() + matcherListSize];
  
      values[i++] = accessEvent;
  
      for (int j = 0; j < matcherListSize; j++) {
        values[i++] = matcherList.get(j);
      }
  
      return values;
    }
  
  }