/*
 * Copyright (C) 2013 Jason Taylor.
 * Released as open-source under the Apache License, Version 2.0.
 * 
 * ============================================================================
 * | Joise
 * ============================================================================
 * 
 * Copyright (C) 2013 Jason Taylor
 * 
 * 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 is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * ============================================================================
 * | Accidental Noise Library
 * | --------------------------------------------------------------------------
 * | Joise is a derivative work based on Josua Tippetts' C++ library:
 * | http://accidentalnoise.sourceforge.net/index.html
 * ============================================================================
 * 
 * Copyright (C) 2011 Joshua Tippetts
 * 
 *   This software is provided 'as-is', without any express or implied
 *   warranty.  In no event will the authors be held liable for any damages
 *   arising from the use of this software.
 * 
 *   Permission is granted to anyone to use this software for any purpose,
 *   including commercial applications, and to alter it and redistribute it
 *   freely, subject to the following restrictions:
 * 
 *   1. The origin of this software must not be misrepresented; you must not
 *      claim that you wrote the original software. If you use this software
 *      in a product, an acknowledgment in the product documentation would be
 *      appreciated but is not required.
 *   2. Altered source versions must be plainly marked as such, and must not be
 *      misrepresented as being the original software.
 *   3. This notice may not be removed or altered from any source distribution.
 */

package com.sudoplay.joise;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;

import com.sudoplay.joise.module.Module;

@SuppressWarnings("serial")
public class ModuleInstanceMap extends HashMap<String, Module> {

  @Override
  public Module put(String id, Module module) {
    if (id == null) {
      throw new NullPointerException("null id");
    }
    if (module == null) {
      throw new NullPointerException("null module, id=" + id);
    }
    return super.put(id, module);
  }

  @Override
  public Module get(Object key) {
    Module module = super.get(key);
    if (module == null) {
      throw new NullPointerException("null module, id=" + key);
    }
    return module;
  }

  public boolean contains(String id) {
    return super.get(id) != null;
  }

  public Iterator<Entry<String, Module>> iterator() {
    return super.entrySet().iterator();
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("[");

    Iterator<Entry<String, Module>> it = iterator();
    while (it.hasNext()) {
      Entry<String, Module> e = it.next();
      sb.append("[");
      sb.append(e.getKey());
      sb.append("|");
      sb.append(e.getValue());
      sb.append("]");
    }

    sb.append("]");
    return sb.toString();
  }

}