/// <inheritdoc />
public async Task RouteAsync(RouteContext context)
{
foreach (var tree in _trees)
{
var tokenizer = new PathTokenizer(context.HttpContext.Request.Path);
var root = tree.Root;
var treeEnumerator = new TreeEnumerator(root, tokenizer);
// Create a snapshot before processing the route. We'll restore this snapshot before running each
// to restore the state. This is likely an "empty" snapshot, which doesn't allocate.
var snapshot = context.RouteData.PushState(router: null, values: null, dataTokens: null);
while (treeEnumerator.MoveNext())
{
var node = treeEnumerator.Current;
foreach (var item in node.Matches)
{
var entry = item.Entry;
var matcher = item.TemplateMatcher;
if (!matcher.TryMatch(context.HttpContext.Request.Path, context.RouteData.Values))
{
continue;
}
try
{
if (!RouteConstraintMatcher.Match(
entry.Constraints,
context.RouteData.Values,
context.HttpContext,
this,
RouteDirection.IncomingRequest,
_constraintLogger))
{
continue;
}
_logger.MatchedRoute(entry.RouteName, entry.RouteTemplate.TemplateText);
context.RouteData.Routers.Add(entry.Handler);
await entry.Handler.RouteAsync(context);
if (context.Handler != null)
{
return;
}
}
finally
{
if (context.Handler == null)
{
// Restore the original values to prevent polluting the route data.
snapshot.Restore();
}
}
}
}
}
}
/// <inheritdoc />
public async Task RouteAsync(RouteContext context)
{
foreach (var tree in _trees)
{
var tokenizer = new PathTokenizer(context.HttpContext.Request.Path);
var enumerator = tokenizer.GetEnumerator();
var root = tree.Root;
var treeEnumerator = new TreeEnumerator(root, tokenizer);
while (treeEnumerator.MoveNext())
{
var node = treeEnumerator.Current;
foreach (var item in node.Matches)
{
var values = item.TemplateMatcher.Match(context.HttpContext.Request.Path);
if (values == null)
{
continue;
}
var match = new TemplateMatch(item, values);
var snapshot = context.RouteData.PushState(match.Entry.Target, match.Values, dataTokens: null);
try
{
if (!RouteConstraintMatcher.Match(
match.Entry.Constraints,
context.RouteData.Values,
context.HttpContext,
this,
RouteDirection.IncomingRequest,
_constraintLogger))
{
continue;
}
_logger.MatchedRoute(match.Entry.RouteName, match.Entry.RouteTemplate.TemplateText);
await match.Entry.Target.RouteAsync(context);
if (context.Handler != null)
{
return;
}
}
finally
{
if (context.Handler == null)
{
// Restore the original values to prevent polluting the route data.
snapshot.Restore();
}
}
}
}
}
}