org.jmlspecs.models
Class JMLEqualsObjectPair

java.lang.Object
  org.jmlspecs.models.JMLEqualsObjectPair

All Implemented Interfaces:

Cloneable, JMLType, Serializable

public class JMLEqualsObjectPair

extends Object

implements JMLType

Pairs of Object and Object, used in the types JMLEqualsToObjectRelation and JMLEqualsToObjectMap.

In a pair the first element is called the "key" and the second the "value". Both the key and the value in a pair must be non-null.

Version:

$Revision: 1.31 $

Author:

Gary T. Leavens, Clyde Ruby

See Also:

JMLEqualsToObjectRelation, JMLEqualsToObjectMap

Class Specifications

public invariant this.owner == null;

Specifications inherited from class Object

represents objectState <- org.jmlspecs.lang.JMLDataGroup.IT; public represents _getClass <- \typeof(this);

Model Field Summary

 

Model fields inherited from class java.lang.Object

_getClass, objectState, theString

 

Ghost Field Summary

 

Ghost fields inherited from class java.lang.Object

objectTimesFinalized, owner

 

Field Summary
Object	key           The key of this pair.
Object	value           The value of this pair.

 

Constructor Summary

JMLEqualsObjectPair(non_null Object dv, non_null Object rv)           Initialize the key and value of this pair.

 

Model Method Summary

 

Model methods inherited from class java.lang.Object

hashValue

 

Method Summary
Object	clone()           Return a clone of this object.
boolean	equals(nullable Object obj)           Test whether this object's value is equal to the given argument.
int	hashCode()           Return a hash code for this object.
boolean	keyEquals(Object dv)           Tell whether this object's key is equal to the given key.
String	toString()           Return a string representation of this object.
boolean	valueEquals(Object rv)           Tell whether this object's key is equal to the given key.

 

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

key

public final Object key

The key of this pair.

Specifications: non_null

value

public final Object value

The value of this pair.

Specifications: non_null

JMLEqualsObjectPair

public JMLEqualsObjectPair(non_null Object dv,
                           non_null Object rv)
                    throws NullPointerException

Initialize the key and value of this pair.

Throws:

NullPointerException

Specifications: (class)pure

ensures dv != null&&rv != null;
signals_only java.lang.NullPointerException;
signals (java.lang.NullPointerException) dv == null||rv == null;

clone

public Object clone()

Description copied from interface: JMLType

Return a clone of this object.

Specified by:

clone in interface JMLType

Overrides:

clone in class Object

Specifications: non_null (class)pure

     also

public model_program { ... }

Specifications inherited from overridden method in class Object:
       non_null

protected normal_behavior
requires this instanceof java.lang.Cloneable;
assignable \nothing;
ensures \result != null;
ensures \typeof(\result ) == \typeof(this);
ensures (* \result is a clone of this *);

     also

protected normal_behavior
requires this.getClass().isArray();
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((java.lang.Object[])\result ).length == ((java.lang.Object[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((java.lang.Object[])this).length; ((java.lang.Object[])\result )[i] == ((java.lang.Object[])this)[i]);

     also

requires this.getClass().isArray();
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures java.lang.reflect.Array.getLength(\result ) == java.lang.reflect.Array.getLength(this);
ensures ( \forall int i; 0 <= i&&i < java.lang.reflect.Array.getLength(this); ( \exists java.lang.Object result_i; result_i == java.lang.reflect.Array.get(\result ,i); (result_i == null&&java.lang.reflect.Array.get(this,i) == null)||(result_i != null&&result_i.equals(java.lang.reflect.Array.get(this,i)))));

     also

protected exceptional_behavior
requires !(this instanceof java.lang.Cloneable);
assignable \nothing;
signals_only java.lang.CloneNotSupportedException;

     also

protected normal_behavior
requires \elemtype(\typeof(this)) <: \type(java.lang.Object);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((java.lang.Object[])\result ).length == ((java.lang.Object[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((java.lang.Object[])this).length; ((java.lang.Object[])\result )[i] == ((java.lang.Object[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(int);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((int[])\result ).length == ((int[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((int[])this).length; ((int[])\result )[i] == ((int[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(byte);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((byte[])\result ).length == ((byte[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((byte[])this).length; ((byte[])\result )[i] == ((byte[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(char);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((char[])\result ).length == ((char[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((char[])this).length; ((char[])\result )[i] == ((char[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(long);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((long[])\result ).length == ((long[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((long[])this).length; ((long[])\result )[i] == ((long[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(short);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((short[])\result ).length == ((short[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((short[])this).length; ((short[])\result )[i] == ((short[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(boolean);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((boolean[])\result ).length == ((boolean[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((boolean[])this).length; ((boolean[])\result )[i] == ((boolean[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(float);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((float[])\result ).length == ((float[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((float[])this).length; (java.lang.Float.isNaN(((float[])\result )[i])&&java.lang.Float.isNaN(((float[])this)[i]))||((float[])\result )[i] == ((float[])this)[i]);

     also

protected normal_behavior
requires \elemtype(\typeof(this)) == \type(double);
assignable \nothing;
ensures \elemtype(\typeof(\result )) == \elemtype(\typeof(this));
ensures ((double[])\result ).length == ((double[])this).length;
ensures ( \forall int i; 0 <= i&&i < ((double[])this).length; (java.lang.Double.isNaN(((double[])\result )[i])&&java.lang.Double.isNaN(((double[])this)[i]))||((double[])\result )[i] == ((double[])this)[i]);

Specifications inherited from overridden method in interface JMLType:
       pure

     also

public normal_behavior
ensures \result != null;
ensures \result instanceof org.jmlspecs.models.JMLType;
ensures ((org.jmlspecs.models.JMLType)\result ).equals(this);

    implies_that

ensures \result != null&&\typeof(\result ) <: \type(org.jmlspecs.models.JMLType);

keyEquals

public boolean keyEquals(Object dv)

Tell whether this object's key is equal to the given key.

See Also:

equals(java.lang.Object)

Specifications: (class)pure

public normal_behavior
ensures \result == (this.key.equals(dv));

valueEquals

public boolean valueEquals(Object rv)

Tell whether this object's key is equal to the given key.

See Also:

equals(java.lang.Object)

Specifications: (class)pure

public normal_behavior
ensures \result == (this.value == rv);

equals

public boolean equals(nullable Object obj)

Test whether this object's value is equal to the given argument.

Specified by:

equals in interface JMLType

Overrides:

equals in class Object

See Also:

keyEquals(java.lang.Object)

Specifications: (class)pure

     also

public normal_behavior
requires obj != null&&obj instanceof org.jmlspecs.models.JMLEqualsObjectPair;
ensures \result == (((org.jmlspecs.models.JMLEqualsObjectPair)obj).key.equals(this.key)&&((org.jmlspecs.models.JMLEqualsObjectPair)obj).value == this.value);

     also

public normal_behavior
requires obj == null||!(obj instanceof org.jmlspecs.models.JMLEqualsObjectPair);
ensures !\result ;

Specifications inherited from overridden method equals(Object obj) in class Object:
       pure

public normal_behavior
requires obj != null;
ensures (* \result is true when obj is "equal to" this object *);

     also

public normal_behavior
requires this == obj;
ensures \result ;

     also

public code normal_behavior
requires obj != null;
ensures \result <==> this == obj;

     also

diverges false;
ensures obj == null ==> !\result ;

Specifications inherited from overridden method equals(Object ob2) in interface JMLType:
       pure

     also

public normal_behavior
ensures \result ==> ob2 != null&&(* ob2 is not distinguishable from this, except by using mutation or == *);

    implies_that

public normal_behavior

{|

requires ob2 != null&&ob2 instanceof org.jmlspecs.models.JMLType;
ensures ((org.jmlspecs.models.JMLType)ob2).equals(this) == \result ;

also

requires ob2 == this;
ensures \result <==> true;

|}

hashCode

public int hashCode()

Return a hash code for this object.

Specified by:

hashCode in interface JMLType

Overrides:

hashCode in class Object

Specifications: (class)pure

Specifications inherited from overridden method in class Object:

public behavior
assignable objectState;
ensures (* \result is a hash code for this object *);

     also

public code normal_behavior
assignable \nothing;

Specifications inherited from overridden method in interface JMLType:
       pure

toString

public String toString()

Return a string representation of this object.

Overrides:

toString in class Object

Specifications: non_null (class)pure

     also

public normal_behavior
ensures (* \result is a string that starts with a '(' followed by the strings representing key and value separated by a comma and ends with a ')' *);

    for_example

public normal_example
requires (* key is 4 and value is 2 *);
ensures (* \result is the string "(4, 2)" *);

Specifications inherited from overridden method in class Object:
       non_null

public normal_behavior
assignable objectState;
ensures \result != null&&\result .equals(this.theString);
ensures (* \result is a string representation of this object *);

     also

public code normal_behavior
assignable \nothing;
ensures \result != null&&(* \result is the instance's class name, followed by an @, followed by the instance's hashcode in hex *);

     also

public code model_program { ... }

    implies_that

assignable objectState;
ensures \result != null;