org.jmlspecs.samples.list.node2
Class OneWayNode

java.lang.Object
  org.jmlspecs.samples.list.node2.OneWayNode

Direct Known Subclasses:

TwoWayNode

public class OneWayNode

extends Object

Class Specifications

protected invariant_redundantly this.nextLink_ != null; protected invariant this.nextNode_ == this.nextLink_.node; public invariant_redundantly this.entries != null&&this.allButFirst != null; public invariant this.entries.equals(this.allButFirst.insertFront(this.theEntry)); protected represents theEntry <- this.entry_; protected represents nextNode <- this.nextNode_; protected represents entries <- this.nextEntries().insertFront(this.entry_); protected represents allButFirst <- this.nextEntries();

Specifications inherited from class Object

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

Model Field Summary
JMLObjectSequence	allButFirst
JMLObjectSequence	entries
OneWayNode	nextNode
Object	theEntry

 

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
protected  Object	entry_
protected  Link	nextLink_
protected  OneWayNode	nextNode_

 

Constructor Summary
protected	OneWayNode()
	OneWayNode(nullable Object ent)
	OneWayNode(nullable Object ent, nullable OneWayNode nxtNode)

 

Model Method Summary
JMLObjectSequence	nextEntries()
JMLObjectSequence	nextEntries(nullable OneWayNode curr)

 

Model methods inherited from class java.lang.Object

hashValue

 

Method Summary
Object	getEntry()
Link	getNextLink()
OneWayNode	getNextNode()
boolean	hasNext()
void	insertAfter(nullable Object newEntry)
void	removeNextNode()
void	setEntry(nullable Object newEntry)
protected  String	stringOfEntries(nullable OneWayNode curr)           Returns the string concatentation of all nodes following this node up to and excluding the end of the chain or this, which ever is reached first (i.e. this method will terminate even for circular lists).
String	toString()

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Model Field Detail

entries

public JMLObjectSequence entries

Specifications:
datagroup contains: org.jmlspecs.samples.list.node2.TwoWayNode.prevEntries allButFirst theEntry entry_ nextNode_.entries

allButFirst

public JMLObjectSequence allButFirst

Specifications:
is in groups: entries
datagroup contains: nextNode nextNode_.entries nextNode_.allButFirst

theEntry

public Object theEntry

Specifications: nullable
is in groups: entries
datagroup contains: entry_

nextNode

public OneWayNode nextNode

Specifications: nullable
is in groups: allButFirst
datagroup contains: org.jmlspecs.samples.list.node2.TwoWayNode.nextDL nextNode_ nextLink_

entry_

protected Object entry_

Specifications: nullable
is in groups: theEntry entries

nextNode_

protected OneWayNode nextNode_

Specifications: nullable
is in groups: nextNode
maps nextNode_.entries \into entries allButFirst, nextNode_.allButFirst \into allButFirst

nextLink_

protected Link nextLink_

Specifications: nullable
is in groups: nextNode

OneWayNode

protected OneWayNode()

OneWayNode

public OneWayNode(nullable Object ent)

Specifications:

public normal_behavior
assignable entries;
ensures this.theEntry == ent&&this.entries.int_size() == 1&&this.entries.itemAt(0) == ent&&this.allButFirst.isEmpty();

OneWayNode

public OneWayNode(nullable Object ent,
                  nullable OneWayNode nxtNode)

Specifications:

public normal_behavior
assignable entries;
ensures this.theEntry == ent&&this.entries.itemAt(0) == ent&&this.nextNode == nxtNode;

nextEntries

public JMLObjectSequence nextEntries()

Specifications: pure

nextEntries

public JMLObjectSequence nextEntries(nullable OneWayNode curr)

Specifications: pure

getEntry

public Object getEntry()

Specifications: pure nullable

public normal_behavior
assignable \nothing;
ensures \result == this.theEntry;

setEntry

public void setEntry(nullable Object newEntry)

Specifications:

public normal_behavior
assignable theEntry;
ensures this.theEntry == newEntry&&this.entries.itemAt(0) == newEntry;

getNextNode

public OneWayNode getNextNode()

Specifications: nullable

protected normal_behavior
assignable \nothing;
ensures \result == this.nextNode;

getNextLink

public Link getNextLink()

Specifications: pure nullable

public normal_behavior
assignable \nothing;
ensures \result .node == this.nextNode;

insertAfter

public void insertAfter(nullable Object newEntry)

Specifications:

public normal_behavior
assignable allButFirst;
ensures this.allButFirst.equals(\old(this.allButFirst).insertFront(newEntry));

removeNextNode

public void removeNextNode()

Specifications:

public normal_behavior
requires !this.allButFirst.isEmpty();
assignable allButFirst;
ensures this.allButFirst.equals(\old(this.allButFirst).trailer());

     also

requires this.allButFirst.isEmpty();
assignable \nothing;
ensures this.allButFirst.isEmpty();

hasNext

public boolean hasNext()

Specifications:

public normal_behavior
assignable \nothing;
ensures \result == (this.nextNode != null);

toString

public String toString()

Overrides:

toString in class Object

Specifications: pure

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;

stringOfEntries

protected String stringOfEntries(nullable OneWayNode curr)

Returns the string concatentation of all nodes following this node up to and excluding the end of the chain or this, which ever is reached first (i.e. this method will terminate even for circular lists).

Specifications: pure