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/*
 Copyright (c) 2011, The Staccato-Commons Team

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; version 3 of the License.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 */
package net.sf.staccatocommons.control.monad.internal;

import java.util.concurrent.BlockingQueue;

import net.sf.staccatocommons.control.monad.Monad;
import net.sf.staccatocommons.control.monad.MonadicValue;
import net.sf.staccatocommons.defs.Applicable;

/**
 * @author flbulgarelli
 * 
 */
public class BlockingMonadValue implements MonadicValue {

  private final BlockingQueue queue;

  /**
   * Creates a new {@link BlockingMonadValue}
   */
  public BlockingMonadValue(BlockingQueue queue) {
    this.queue = queue;
  }

  public  void eval(Applicable> function) {
    try {
      while (true)
        function.apply(queue.take()).value();
    } catch (InterruptedException e) {
      // stream end
    }
  }

}