private void AppendDescriptors( Diffgram diffgram )
{
IDictionaryEnumerator en = _moveDescriptors.GetEnumerator();
while ( en.MoveNext() )
diffgram.AddDescriptor( new OperationDescrMove( (ulong)en.Value ) );
NamespaceChange nsChange = _namespaceChangeDescr;
while ( nsChange != null )
{
diffgram.AddDescriptor( new OperationDescrNamespaceChange( nsChange ) );
nsChange = nsChange._next;
}
PrefixChange prefixChange = _prefixChangeDescr;
while ( prefixChange != null )
{
diffgram.AddDescriptor( new OperationDescrPrefixChange( prefixChange ) );
prefixChange = prefixChange._next;
}
}
// Methods
internal Diffgram GenerateFromEditScript( EditScript editScript )
{
Debug.Assert( editScript != null );
Debug.Assert( _xmlDiff._sourceNodes != null );
Debug.Assert( _xmlDiff._targetNodes != null );
_sourceNodes = _xmlDiff._sourceNodes;
_targetNodes = _xmlDiff._targetNodes;
Diffgram diffgram = new Diffgram( _xmlDiff );
// root nodes always match; remove them from the edit script
EditScriptMatch esm = editScript as EditScriptMatch;
if ( editScript.Operation == EditScriptOperation.Match &&
( esm._firstSourceIndex + esm._length == _sourceNodes.Length &&
esm._firstTargetIndex + esm._length == _targetNodes.Length ) )
{
esm._length--;
if ( esm._length == 0 )
editScript = esm._nextEditScript;
}
else
Debug.Assert( false, "The root nodes does not match!" );
// init globals
_curSourceIndex = _sourceNodes.Length - 2;
_curTargetIndex = _targetNodes.Length - 2;
_editScript = editScript;
// generate diffgram
GenerateDiffgramMatch( diffgram, 1, 1 );
// add descriptors
AppendDescriptors( diffgram );
return diffgram;
}
// Walktree diffgram generation
internal Diffgram GenerateFromWalkTree()
{
Diffgram diffgram = new Diffgram( _xmlDiff );
WalkTreeGenerateDiffgramMatch( diffgram, _xmlDiff._sourceDoc, _xmlDiff._targetDoc );
AppendDescriptors( diffgram );
return diffgram;
}