/// <summary>
/// Evaluates the selected <see cref="Pattern"/>.
/// </summary>
/// <remarks>
/// As most of the other evaluation methods, it repositions the
/// <see cref="EvaluationContextBase.Source"/> navigator on the root node.
/// <para>
/// Clears the <see cref="EvaluationContextBase.Matched"/> object before
/// proceeding, as the restriction about node mathing (see <linkref id="schematron" />)
/// applies only inside a single pattern.
/// </para>
/// </remarks>
/// <param name="pattern">The <see cref="Pattern"/> to evaluate.</param>
/// <param name="output">Contains the builder to accumulate messages in.</param>
/// <returns>A boolean indicating if a new message was added.</returns>
private bool Evaluate(Pattern pattern, StringBuilder output)
{
bool failed = false;
Source.MoveToRoot();
StringBuilder sb = new StringBuilder();
// Reset matched nodes, as across patters, nodes can be
// evaluated more than once.
Matched.Clear();
foreach (Rule rule in pattern.Rules)
{
if (Evaluate(rule, sb))
{
failed = true;
}
}
if (failed)
{
Formatter.Format(pattern, Source, sb);
output.Append(sb.ToString());
}
return(failed);
}
void Sort <T>(Func <ManualMatchedPair <TInternal, TExternal>, T> sortKey)
{
var list = Matched.OrderBy(sortKey).ToList();
Matched.Clear();
foreach (var e in list)
{
Matched.Add(e);
}
}
/// <summary>
/// Evaluates the selected <see cref="Pattern"/>.
/// </summary>
/// <remarks>
/// Processing is synchronous, as rules must me evaluated in document order.
/// <para>
/// As most of the other evaluation methods, it repositions the
/// <see cref="EvaluationContextBase.Source"/> navigator on the root node.
/// </para>
/// <para>
/// Clears the <see cref="EvaluationContextBase.Matched"/> object before
/// proceeding, as the restriction about node mathing (see <link ref="schematron" />)
/// applies only inside a single pattern.
/// </para>
/// </remarks>
/// <param name="pattern">The <see cref="Pattern"/> to evaluate.</param>
/// <returns>The messages accumulated by the evaluation of all the child
/// <see cref="Rule"/>, or <see cref="String.Empty"/> if there are no messages.</returns>
private string Evaluate(Pattern pattern)
{
Source.MoveToRoot();
StringBuilder sb = new StringBuilder();
// Reset matched nodes, as across patters, nodes can be
// evaluated more than once.
Matched.Clear();
foreach (Rule rule in pattern.Rules)
{
sb.Append(Evaluate(rule));
}
string res = sb.ToString();
return(Formatter.Format(pattern, res, Source));
}
