org.eclipse.xtext.nodemodel.impl

Class InvariantChecker

java.lang.Object

org.eclipse.xtext.nodemodel.impl.InvariantChecker

public class InvariantChecker
extends Object

Author:

Sebastian Zarnekow - Initial contribution and API

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	InvariantChecker.InconsistentNodeModelException

Constructor Summary

Constructors

Constructor and Description
InvariantChecker()

Method Summary

Methods

Modifier and Type	Method and Description
void	checkInvariant(INode node) Assert the invariant of completely build node model.
protected int	doCheckChildNodeAndReturnTotalLength(INode child, ICompositeNode parent, int startsAt)
protected int	doCheckCompositeNodeAndReturnTotalLength(ICompositeNode node, int startsAt)
protected void	doCheckInvariant(ICompositeNode rootNode)
protected int	doCheckLeafNodeAndReturnLength(ILeafNode leafNode, int startsAt)

Methods inherited from class java.lang.Object

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

Constructor Detail

InvariantChecker

public InvariantChecker()

Method Detail

checkInvariant

public void checkInvariant(INode node)
                    throws InvariantChecker.InconsistentNodeModelException

Assert the invariant of completely build node model. Checks that every pointer is correct, e.g.

• a parent points to its first child,
• siblings point to the very same parent,
• the offset and length data is in sync, and
• no null fields are present (besides some empty first child pointers).

Parameters:

node - an arbitrary node of the complete node model that should be checked.

Throws:

InvariantChecker.InconsistentNodeModelException - if the node is part of an inconsistent node tree.

doCheckInvariant

protected void doCheckInvariant(ICompositeNode rootNode)

doCheckCompositeNodeAndReturnTotalLength

protected int doCheckCompositeNodeAndReturnTotalLength(ICompositeNode node,
                                           int startsAt)

doCheckChildNodeAndReturnTotalLength

protected int doCheckChildNodeAndReturnTotalLength(INode child,
                                       ICompositeNode parent,
                                       int startsAt)

doCheckLeafNodeAndReturnLength

protected int doCheckLeafNodeAndReturnLength(ILeafNode leafNode,
                                 int startsAt)