compiler/java/com/google/dart/compiler/util/apache/mutable/MutableInt.java - sdk.git - Git at Google

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You 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.
  */
 package com.google.dart.compiler.util.apache.mutable;

 /**
  * A mutable <code>int</code> wrapper.
  * <p>
  * Note that as MutableInt does not extend Integer, it is not treated by String.format as an Integer parameter.
  * <p>
  * NOTICE: This file is modified copy of its original Apache library.
  * It was moved to the different package, and changed to reduce number of dependencies.
  *
  * @see Integer
  * @since 2.1
  * @version $Id: MutableInt.java 1160571 2011-08-23 07:36:08Z bayard $
  */
 public class MutableInt extends Number implements Comparable<MutableInt>, Mutable<Number> {

     /**
      * Required for serialization support.
      *
      * @see java.io.Serializable
      */
     private static final long serialVersionUID = 512176391864L;

     /** The mutable value. */
     private int value;

     /**
      * Constructs a new MutableInt with the default value of zero.
      */
     public MutableInt() {
         super();
     }

     /**
      * Constructs a new MutableInt with the specified value.
      *
      * @param value  the initial value to store
      */
     public MutableInt(int value) {
         super();
         this.value = value;
     }

     /**
      * Constructs a new MutableInt with the specified value.
      *
      * @param value  the initial value to store, not null
      * @throws NullPointerException if the object is null
      */
     public MutableInt(Number value) {
         super();
         this.value = value.intValue();
     }

     /**
      * Constructs a new MutableInt parsing the given string.
      *
      * @param value  the string to parse, not null
      * @throws NumberFormatException if the string cannot be parsed into an int
      * @since 2.5
      */
     public MutableInt(String value) throws NumberFormatException {
         super();
         this.value = Integer.parseInt(value);
     }

     //-----------------------------------------------------------------------
     /**
      * Gets the value as a Integer instance.
      *
      * @return the value as a Integer, never null
      */
     public Integer getValue() {
         return Integer.valueOf(this.value);
     }

     /**
      * Sets the value.
      *
      * @param value  the value to set
      */
     public void setValue(int value) {
         this.value = value;
     }

     /**
      * Sets the value from any Number instance.
      *
      * @param value  the value to set, not null
      * @throws NullPointerException if the object is null
      */
     public void setValue(Number value) {
         this.value = value.intValue();
     }

     //-----------------------------------------------------------------------
     /**
      * Increments the value.
      *
      * @since Commons Lang 2.2
      */
     public void increment() {
         value++;
     }

     /**
      * Decrements the value.
      *
      * @since Commons Lang 2.2
      */
     public void decrement() {
         value--;
     }

     //-----------------------------------------------------------------------
     /**
      * Adds a value to the value of this instance.
      *
      * @param operand  the value to add, not null
      * @since Commons Lang 2.2
      */
     public void add(int operand) {
         this.value += operand;
     }

     /**
      * Adds a value to the value of this instance.
      *
      * @param operand  the value to add, not null
      * @throws NullPointerException if the object is null
      * @since Commons Lang 2.2
      */
     public void add(Number operand) {
         this.value += operand.intValue();
     }

     /**
      * Subtracts a value from the value of this instance.
      *
      * @param operand  the value to subtract, not null
      * @since Commons Lang 2.2
      */
     public void subtract(int operand) {
         this.value -= operand;
     }

     /**
      * Subtracts a value from the value of this instance.
      *
      * @param operand  the value to subtract, not null
      * @throws NullPointerException if the object is null
      * @since Commons Lang 2.2
      */
     public void subtract(Number operand) {
         this.value -= operand.intValue();
     }

     //-----------------------------------------------------------------------
     // shortValue and byteValue rely on Number implementation
     /**
      * Returns the value of this MutableInt as an int.
      *
      * @return the numeric value represented by this object after conversion to type int.
      */
     @Override
     public int intValue() {
         return value;
     }

     /**
      * Returns the value of this MutableInt as a long.
      *
      * @return the numeric value represented by this object after conversion to type long.
      */
     @Override
     public long longValue() {
         return value;
     }

     /**
      * Returns the value of this MutableInt as a float.
      *
      * @return the numeric value represented by this object after conversion to type float.
      */
     @Override
     public float floatValue() {
         return value;
     }

     /**
      * Returns the value of this MutableInt as a double.
      *
      * @return the numeric value represented by this object after conversion to type double.
      */
     @Override
     public double doubleValue() {
         return value;
     }

     //-----------------------------------------------------------------------
     /**
      * Gets this mutable as an instance of Integer.
      *
      * @return a Integer instance containing the value from this mutable, never null
      */
     public Integer toInteger() {
         return Integer.valueOf(intValue());
     }

     //-----------------------------------------------------------------------
     /**
      * Compares this object to the specified object. The result is <code>true</code> if and only if the argument is
      * not <code>null</code> and is a <code>MutableInt</code> object that contains the same <code>int</code> value
      * as this object.
      *
      * @param obj  the object to compare with, null returns false
      * @return <code>true</code> if the objects are the same; <code>false</code> otherwise.
      */
     @Override
     public boolean equals(Object obj) {
         if (obj instanceof MutableInt) {
             return value == ((MutableInt) obj).intValue();
         }
         return false;
     }

     /**
      * Returns a suitable hash code for this mutable.
      *
      * @return a suitable hash code
      */
     @Override
     public int hashCode() {
         return value;
     }

     //-----------------------------------------------------------------------
     /**
      * Compares this mutable to another in ascending order.
      *
      * @param other  the other mutable to compare to, not null
      * @return negative if this is less, zero if equal, positive if greater
      */
     public int compareTo(MutableInt other) {
         int anotherVal = other.value;
         return value < anotherVal ? -1 : (value == anotherVal ? 0 : 1);
     }

     //-----------------------------------------------------------------------
     /**
      * Returns the String value of this mutable.
      *
      * @return the mutable value as a string
      */
     @Override
     public String toString() {
         return String.valueOf(value);
     }

 }
	// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
	// for details. All rights reserved. Use of this source code is governed by a
	// BSD-style license that can be found in the LICENSE file.

	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You 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.
	*/
	package com.google.dart.compiler.util.apache.mutable;

	/**
	* A mutable <code>int</code> wrapper.
	* <p>
	* Note that as MutableInt does not extend Integer, it is not treated by String.format as an Integer parameter.
	* <p>
	* NOTICE: This file is modified copy of its original Apache library.
	* It was moved to the different package, and changed to reduce number of dependencies.
	*
	* @see Integer
	* @since 2.1
	* @version $Id: MutableInt.java 1160571 2011-08-23 07:36:08Z bayard $
	*/
	public class MutableInt extends Number implements Comparable<MutableInt>, Mutable<Number> {

	/**
	* Required for serialization support.
	*
	* @see java.io.Serializable
	*/
	private static final long serialVersionUID = 512176391864L;

	/** The mutable value. */
	private int value;

	/**
	* Constructs a new MutableInt with the default value of zero.
	*/
	public MutableInt() {
	super();
	}

	/**
	* Constructs a new MutableInt with the specified value.
	*
	* @param value the initial value to store
	*/
	public MutableInt(int value) {
	super();
	this.value = value;
	}

	/**
	* Constructs a new MutableInt with the specified value.
	*
	* @param value the initial value to store, not null
	* @throws NullPointerException if the object is null
	*/
	public MutableInt(Number value) {
	super();
	this.value = value.intValue();
	}

	/**
	* Constructs a new MutableInt parsing the given string.
	*
	* @param value the string to parse, not null
	* @throws NumberFormatException if the string cannot be parsed into an int
	* @since 2.5
	*/
	public MutableInt(String value) throws NumberFormatException {
	super();
	this.value = Integer.parseInt(value);
	}

	//-----------------------------------------------------------------------
	/**
	* Gets the value as a Integer instance.
	*
	* @return the value as a Integer, never null
	*/
	public Integer getValue() {
	return Integer.valueOf(this.value);
	}

	/**
	* Sets the value.
	*
	* @param value the value to set
	*/
	public void setValue(int value) {
	this.value = value;
	}

	/**
	* Sets the value from any Number instance.
	*
	* @param value the value to set, not null
	* @throws NullPointerException if the object is null
	*/
	public void setValue(Number value) {
	this.value = value.intValue();
	}

	//-----------------------------------------------------------------------
	/**
	* Increments the value.
	*
	* @since Commons Lang 2.2
	*/
	public void increment() {
	value++;
	}

	/**
	* Decrements the value.
	*
	* @since Commons Lang 2.2
	*/
	public void decrement() {
	value--;
	}

	//-----------------------------------------------------------------------
	/**
	* Adds a value to the value of this instance.
	*
	* @param operand the value to add, not null
	* @since Commons Lang 2.2
	*/
	public void add(int operand) {
	this.value += operand;
	}

	/**
	* Adds a value to the value of this instance.
	*
	* @param operand the value to add, not null
	* @throws NullPointerException if the object is null
	* @since Commons Lang 2.2
	*/
	public void add(Number operand) {
	this.value += operand.intValue();
	}

	/**
	* Subtracts a value from the value of this instance.
	*
	* @param operand the value to subtract, not null
	* @since Commons Lang 2.2
	*/
	public void subtract(int operand) {
	this.value -= operand;
	}

	/**
	* Subtracts a value from the value of this instance.
	*
	* @param operand the value to subtract, not null
	* @throws NullPointerException if the object is null
	* @since Commons Lang 2.2
	*/
	public void subtract(Number operand) {
	this.value -= operand.intValue();
	}

	//-----------------------------------------------------------------------
	// shortValue and byteValue rely on Number implementation
	/**
	* Returns the value of this MutableInt as an int.
	*
	* @return the numeric value represented by this object after conversion to type int.
	*/
	@Override
	public int intValue() {
	return value;
	}

	/**
	* Returns the value of this MutableInt as a long.
	*
	* @return the numeric value represented by this object after conversion to type long.
	*/
	@Override
	public long longValue() {
	return value;
	}

	/**
	* Returns the value of this MutableInt as a float.
	*
	* @return the numeric value represented by this object after conversion to type float.
	*/
	@Override
	public float floatValue() {
	return value;
	}

	/**
	* Returns the value of this MutableInt as a double.
	*
	* @return the numeric value represented by this object after conversion to type double.
	*/
	@Override
	public double doubleValue() {
	return value;
	}

	//-----------------------------------------------------------------------
	/**
	* Gets this mutable as an instance of Integer.
	*
	* @return a Integer instance containing the value from this mutable, never null
	*/
	public Integer toInteger() {
	return Integer.valueOf(intValue());
	}

	//-----------------------------------------------------------------------
	/**
	* Compares this object to the specified object. The result is <code>true</code> if and only if the argument is
	* not <code>null</code> and is a <code>MutableInt</code> object that contains the same <code>int</code> value
	* as this object.
	*
	* @param obj the object to compare with, null returns false
	* @return <code>true</code> if the objects are the same; <code>false</code> otherwise.
	*/
	@Override
	public boolean equals(Object obj) {
	if (obj instanceof MutableInt) {
	return value == ((MutableInt) obj).intValue();
	}
	return false;
	}

	/**
	* Returns a suitable hash code for this mutable.
	*
	* @return a suitable hash code
	*/
	@Override
	public int hashCode() {
	return value;
	}

	//-----------------------------------------------------------------------
	/**
	* Compares this mutable to another in ascending order.
	*
	* @param other the other mutable to compare to, not null
	* @return negative if this is less, zero if equal, positive if greater
	*/
	public int compareTo(MutableInt other) {
	int anotherVal = other.value;
	return value < anotherVal ? -1 : (value == anotherVal ? 0 : 1);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns the String value of this mutable.
	*
	* @return the mutable value as a string
	*/
	@Override
	public String toString() {
	return String.valueOf(value);
	}

	}