private static IReadOnlyDictionary<string, IRouteConstraint> GetRouteConstriants(
IInlineConstraintResolver inlineConstraintResolver,
string template,
RouteTemplate parsedRouteTemplate)
{
var constraintBuilder = new RouteConstraintBuilder(inlineConstraintResolver, template);
foreach (var parameter in parsedRouteTemplate.Parameters)
{
if (parameter.InlineConstraints != null)
{
if (parameter.IsOptional)
{
constraintBuilder.SetOptional(parameter.Name);
}
foreach (var constraint in parameter.InlineConstraints)
{
constraintBuilder.AddResolvedConstraint(parameter.Name, constraint.Constraint);
}
}
}
return constraintBuilder.Build();
}
private static AttributeRouteLinkGenerationEntry CreateGenerationEntry(
string template,
object requiredValues,
int order = 0,
string name = null)
{
var constraintResolver = CreateConstraintResolver();
var entry = new AttributeRouteLinkGenerationEntry();
entry.TemplateText = template;
entry.Template = TemplateParser.Parse(template);
var defaults = entry.Template.Parameters
.Where(p => p.DefaultValue != null)
.ToDictionary(p => p.Name, p => p.DefaultValue);
var constraintBuilder = new RouteConstraintBuilder(CreateConstraintResolver(), template);
foreach (var parameter in entry.Template.Parameters)
{
if (parameter.InlineConstraints != null)
{
if (parameter.IsOptional)
{
constraintBuilder.SetOptional(parameter.Name);
}
foreach (var constraint in parameter.InlineConstraints)
{
constraintBuilder.AddResolvedConstraint(parameter.Name, constraint.Constraint);
}
}
}
var constraints = constraintBuilder.Build();
entry.Constraints = constraints;
entry.Defaults = defaults;
entry.Binder = new TemplateBinder(entry.Template, defaults);
entry.Order = order;
entry.Precedence = AttributeRoutePrecedence.Compute(entry.Template);
entry.RequiredLinkValues = new RouteValueDictionary(requiredValues);
entry.RouteGroup = CreateRouteGroup(order, template);
entry.Name = name;
return entry;
}
private static RouteInfo GetRouteInfo(
IInlineConstraintResolver constraintResolver,
Dictionary<string, RouteTemplate> templateCache,
ActionDescriptor action)
{
var constraint = action.RouteConstraints
.Where(c => c.RouteKey == AttributeRouting.RouteGroupKey)
.FirstOrDefault();
if (constraint == null ||
constraint.KeyHandling != RouteKeyHandling.RequireKey ||
constraint.RouteValue == null)
{
// This can happen if an ActionDescriptor has a route template, but doesn't have one of our
// special route group constraints. This is a good indication that the user is using a 3rd party
// routing system, or has customized their ADs in a way that we can no longer understand them.
//
// We just treat this case as an 'opt-out' of our attribute routing system.
return null;
}
var routeInfo = new RouteInfo()
{
ActionDescriptor = action,
RouteGroup = constraint.RouteValue,
RouteTemplate = action.AttributeRouteInfo.Template,
};
try
{
RouteTemplate parsedTemplate;
if (!templateCache.TryGetValue(action.AttributeRouteInfo.Template, out parsedTemplate))
{
// Parsing with throw if the template is invalid.
parsedTemplate = TemplateParser.Parse(action.AttributeRouteInfo.Template);
templateCache.Add(action.AttributeRouteInfo.Template, parsedTemplate);
}
routeInfo.ParsedTemplate = parsedTemplate;
}
catch (Exception ex)
{
routeInfo.ErrorMessage = ex.Message;
return routeInfo;
}
foreach (var kvp in action.RouteValueDefaults)
{
foreach (var parameter in routeInfo.ParsedTemplate.Parameters)
{
if (string.Equals(kvp.Key, parameter.Name, StringComparison.OrdinalIgnoreCase))
{
routeInfo.ErrorMessage = Resources.FormatAttributeRoute_CannotContainParameter(
routeInfo.RouteTemplate,
kvp.Key,
kvp.Value);
return routeInfo;
}
}
}
routeInfo.Order = action.AttributeRouteInfo.Order;
routeInfo.Precedence = AttributeRoutePrecedence.Compute(routeInfo.ParsedTemplate);
routeInfo.Name = action.AttributeRouteInfo.Name;
var constraintBuilder = new RouteConstraintBuilder(constraintResolver, routeInfo.RouteTemplate);
foreach (var parameter in routeInfo.ParsedTemplate.Parameters)
{
if (parameter.InlineConstraints != null)
{
if (parameter.IsOptional)
{
constraintBuilder.SetOptional(parameter.Name);
}
foreach (var inlineConstraint in parameter.InlineConstraints)
{
constraintBuilder.AddResolvedConstraint(parameter.Name, inlineConstraint.Constraint);
}
}
}
routeInfo.Constraints = constraintBuilder.Build();
routeInfo.Defaults = routeInfo.ParsedTemplate.Parameters
.Where(p => p.DefaultValue != null)
.ToDictionary(p => p.Name, p => p.DefaultValue, StringComparer.OrdinalIgnoreCase);
return routeInfo;
}
/// <summary>
/// Processes the constraints for the specified template.
/// </summary>
/// <param name="rawTemplate">Raw template string</param>
/// <param name="parsedTemplate">Parsed template</param>
/// <returns>The constraints for this route</returns>
private IDictionary<string, object> GetConstraints(string rawTemplate, RouteTemplate parsedTemplate)
{
var constraintBuilder = new RouteConstraintBuilder(_constraintResolver, rawTemplate);
foreach (var parameter in parsedTemplate.Parameters)
{
if (parameter.InlineConstraints != null)
{
if (parameter.IsOptional)
{
constraintBuilder.SetOptional(parameter.Name);
}
foreach (var inlineConstraint in parameter.InlineConstraints)
{
constraintBuilder.AddResolvedConstraint(parameter.Name, inlineConstraint.Constraint);
}
}
}
var constraints = constraintBuilder.Build();
return _constraintsProcessor.ProcessConstraints(constraints);
}
protected static IDictionary<string, IRouteConstraint> GetConstraints(
IInlineConstraintResolver inlineConstraintResolver,
RouteTemplate parsedTemplate,
IDictionary<string, object> constraints)
{
var constraintBuilder = new RouteConstraintBuilder(inlineConstraintResolver, parsedTemplate.TemplateText);
if (constraints != null)
{
foreach (var kvp in constraints)
{
constraintBuilder.AddConstraint(kvp.Key, kvp.Value);
}
}
foreach (var parameter in parsedTemplate.Parameters)
{
if (parameter.IsOptional)
{
constraintBuilder.SetOptional(parameter.Name);
}
foreach (var inlineConstraint in parameter.InlineConstraints)
{
constraintBuilder.AddResolvedConstraint(parameter.Name, inlineConstraint.Constraint);
}
}
return constraintBuilder.Build();
}