ELSupport.java

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 *
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
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 * "Portions Copyright [2014] [David Tesler (https://github.com/protobufel)]"
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package com.github.protobufel.el;

/**
 * Useful utility methods, taken from javax.el package in the modified and unmodified form. 
 *  
 * @author protobufel@gmail.com David Tesler
 */
public final class ELSupport {
  private ELSupport() {}
  
  public static int toInteger(final Object p) {
    if (p instanceof Integer) {
      return ((Integer) p).intValue();
    }
    if (p instanceof Character) {
      return ((Character) p).charValue();
    }
    if (p instanceof Number) {
      return ((Number) p).intValue();
    }
    if (p instanceof String) {
      return Integer.parseInt((String) p);
    }
    throw new IllegalArgumentException();
  }
}