static XmlDiffPathNodeList SelectAllChildren(XmlDiffViewParentNode parentNode)
{
if (parentNode._childNodes == null)
{
OnNoMatchingNode("*");
return(null);
}
else if (parentNode._childNodes._nextSibbling == null)
{
XmlDiffPathNodeList nodeList = new XmlDiffPathSingleNodeList();
nodeList.AddNode(parentNode._childNodes);
return(nodeList);
}
else
{
XmlDiffPathNodeList nodeList = new XmlDiffPathMultiNodeList();
XmlDiffViewNode childNode = parentNode._childNodes;
while (childNode != null)
{
nodeList.AddNode(childNode);
childNode = childNode._nextSibbling;
}
return(nodeList);
}
}
static XmlDiffPathNodeList SelectAbsoluteNodes(XmlDiffViewParentNode rootNode, string path)
{
Debug.Assert(path[0] == '/');
int pos = 1;
XmlDiffViewNode node = rootNode;
//why??this line screws up ncover: for (;;)
while (true)
{
int startPos = pos;
int nodePos = ReadPosition(path, ref pos);
if (pos == path.Length || path[pos] == '/')
{
if (node.FirstChildNode == null)
{
OnNoMatchingNode(path);
}
XmlDiffViewParentNode parentNode = (XmlDiffViewParentNode)node;
if (nodePos <= 0 || nodePos > parentNode._sourceChildNodesCount)
{
OnNoMatchingNode(path);
}
node = parentNode.GetSourceChildNode(nodePos - 1);
if (pos == path.Length)
{
XmlDiffPathNodeList list = new XmlDiffPathSingleNodeList();
list.AddNode(node);
return(list);
}
pos++;
}
else
{
if (path[pos] == '-' || path[pos] == '|')
{
if (node.FirstChildNode == null)
{
OnNoMatchingNode(path);
}
return(SelectChildNodes(((XmlDiffViewParentNode)node), path, startPos));
}
OnInvalidExpression(path);
}
}
throw new InvalidOperationException(); // This is necessary for NCover. Otherwise NCover screws up the output when instrumenting.
}
static XmlDiffPathNodeList SelectAttributes(XmlDiffViewElement parentElement, string path)
{
Debug.Assert(path[0] == '@');
int pos = 1;
XmlDiffPathNodeList nodeList = null;
//NCOVER DOESN'T LIKE: for (;;)
while (true)
{
string name = ReadAttrName(path, ref pos);
if (nodeList == null)
{
if (pos == path.Length)
{
nodeList = new XmlDiffPathSingleNodeList();
}
else
{
nodeList = new XmlDiffPathMultiNodeList();
}
}
XmlDiffViewAttribute attr = parentElement.GetAttribute(name);
if (attr == null)
{
OnNoMatchingNode(path);
}
nodeList.AddNode(attr);
if (pos == path.Length)
{
break;
}
else if (path[pos] == '|')
{
pos++;
if (path[pos] != '@')
{
OnInvalidExpression(path);
}
pos++;
}
else
{
OnInvalidExpression(path);
}
}
return(nodeList);
}
static XmlDiffPathNodeList SelectAllAttributes(XmlDiffViewElement parentElement)
{
if (parentElement._attributes == null)
{
OnNoMatchingNode("@*");
return(null);
}
else if (parentElement._attributes._nextSibbling == null)
{
XmlDiffPathNodeList nodeList = new XmlDiffPathSingleNodeList();
nodeList.AddNode(parentElement._attributes);
return(nodeList);
}
else
{
XmlDiffPathNodeList nodeList = new XmlDiffPathMultiNodeList();
XmlDiffViewAttribute curAttr = parentElement._attributes;
while (curAttr != null)
{
nodeList.AddNode(curAttr);
}
return(nodeList);
}
}
static XmlDiffPathNodeList SelectChildNodes(XmlDiffViewParentNode parentNode, string path, int startPos)
{
int pos = startPos;
XmlDiffPathNodeList nodeList = null;
//NCOVER DOESN'T LIKE: for (;;)
while (true)
{
int nodePos = ReadPosition(path, ref pos);
if (pos == path.Length)
{
nodeList = new XmlDiffPathSingleNodeList();
}
else
{
nodeList = new XmlDiffPathMultiNodeList();
}
if (nodePos <= 0 || nodePos > parentNode._sourceChildNodesCount)
{
OnNoMatchingNode(path);
}
nodeList.AddNode(parentNode.GetSourceChildNode(nodePos - 1));
if (pos == path.Length)
{
break;
}
else if (path[pos] == '|')
{
pos++;
}
else if (path[pos] == '-')
{
pos++;
int endNodePos = ReadPosition(path, ref pos);
if (endNodePos <= 0 || endNodePos > parentNode._sourceChildNodesCount)
{
OnNoMatchingNode(path);
}
while (nodePos < endNodePos)
{
nodePos++;
nodeList.AddNode(parentNode.GetSourceChildNode(nodePos - 1));
}
if (pos == path.Length)
{
break;
}
else if (path[pos] == '|')
{
pos++;
}
else
{
OnInvalidExpression(path);
}
}
}
return(nodeList);
}
