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/*
 * Copyright (C) 2005, The Beangle Software.
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.beangle.commons.lang.functor

import org.beangle.commons.lang.Strings.*

import java.util.Collection

/** 有效整型判断谓词
  *
  * @author chaostone
  */
class InRange(val floor: Int, val upper: Int) extends Predicate[Number] {

  def apply(value: Number): Boolean =
    if (null == value)
      false
    else {
      val valueInt = value.intValue()
      valueInt <= upper && valueInt >= floor
    }
}

object NotZero extends Predicate[Number] {

  def apply(value: Number): Boolean =
    null != value && 0 != value.asInstanceOf[Number].intValue
}

object NotEmpty extends Predicate[String] {

  def apply(value: String): Boolean =
    (null != value) && (value.isInstanceOf[String]) && isNotEmpty(value.asInstanceOf[String])
}

object SingleWord extends Predicate[String] {

  def apply(str: String): Boolean =
    str.indexOf(DELIMITER) == -1
}

class InStr(val str: String) extends Predicate[String] {

  def apply(arg0: String): Boolean =
    -1 != str.indexOf(arg0.toString)
}

class Contains[T](val objs: Collection[_ <: T]) extends Predicate[T]() {

  def apply(arg0: T): Boolean =
    objs.contains(arg0)
}

class Max1Element extends Predicate[Collection[_]] {

  def apply(col: Collection[_]): Boolean =
    col.size < 2
}