public static XPathExpression Compile(string xpath, IXmlNamespaceResolver nsResolver)
{
bool flag;
CompiledXpathExpr expr = new CompiledXpathExpr(new QueryBuilder().Build(xpath, out flag), xpath, flag);
if (nsResolver != null)
{
expr.SetContext(nsResolver);
}
return(expr);
}
public static XPathExpression Compile(string xpath, IXmlNamespaceResolver nsResolver)
{
bool hasPrefix;
Query query = new QueryBuilder().Build(xpath, out hasPrefix);
CompiledXpathExpr expr = new CompiledXpathExpr(query, xpath, hasPrefix);
if (null != nsResolver)
{
expr.SetContext(nsResolver);
}
return(expr);
}
/// <include file='doc\XPathNavigator.uex' path='docs/doc[@for="XPathNavigator.Evaluate1"]/*' />
public virtual object Evaluate(XPathExpression expr, XPathNodeIterator context)
{
CompiledXpathExpr cexpr = expr as CompiledXpathExpr;
if (cexpr == null)
{
throw new XPathException(Res.Xp_BadQueryObject);
}
IQuery query = cexpr.QueryTree;
query.reset();
XPathNavigator current = (context != null) ? context.Current : this;
if (query.ReturnType() == XPathResultType.NodeSet)
{
return(new XPathSelectionIterator(current, expr));
}
return(query.getValue(current, context));
}
/// <include file='doc\XPathNavigator.uex' path='docs/doc[@for="XPathNavigator.Matches"]/*' />
public virtual bool Matches(XPathExpression expr)
{
CompiledXpathExpr cexpr = expr as CompiledXpathExpr;
if (cexpr == null)
{
throw new XPathException(Res.Xp_BadQueryObject);
}
IQuery query = cexpr.QueryTree;
if (query.ReturnType() != XPathResultType.NodeSet)
{
throw new XPathException(Res.Xp_NodeSetExpected);
}
try {
return(query.MatchNode(this) != null);
}
catch (XPathException) {
throw new XPathException(Res.Xp_InvalidPattern, cexpr.Expression);
}
}
internal TheQuery( CompiledXpathExpr compiledQuery, InputScopeManager manager) {
_CompiledQuery = compiledQuery;
_ScopeManager = manager.Clone();
}
