private ICondition ParseConditionElement(XElement element, ParserContext context)
{
var scope = Scope.Url;
var isNumericIndex = false;
string scopeIndexString = null;
var scopeIndexInt = 0;
var indexIsANumber = false;
var isNumericValue = false;
string text = null;
var value = 0;
var defaultValue = 0;
var valueIsANumber = false;
var compareOperation = CompareOperation.MatchRegex;
string customConditionName = null;
var inverted = false;
var ignoreCase = true;
if (element.HasAttributes)
{
foreach (var attribute in element.Attributes())
{
switch (attribute.Name.LocalName.ToLower())
{
case "scope":
if (!Enum.TryParse(attribute.Value, true, out scope))
{
throw new Exception(attribute.Value + " is not a valid scope");
}
break;
case "index":
scopeIndexString = attribute.Value;
indexIsANumber = int.TryParse(attribute.Value, out scopeIndexInt);
break;
case "test":
if (!Enum.TryParse(attribute.Value, true, out compareOperation))
{
customConditionName = attribute.Value;
}
break;
case "value":
text = attribute.Value;
valueIsANumber = int.TryParse(attribute.Value, out value);
break;
case "negate":
inverted = attribute.Value.ToLower() == "true";
break;
case "ignorecase":
ignoreCase = attribute.Value.ToLower() == "true";
break;
}
}
}
switch (scope)
{
case Scope.PathElement:
case Scope.HostElement:
case Scope.OriginalPathElement:
case Scope.ConditionGroup:
case Scope.MatchGroup:
isNumericIndex = true;
isNumericValue = false;
break;
case Scope.ServerVariable:
case Scope.Header:
case Scope.OriginalHeader:
isNumericIndex = false;
isNumericValue = valueIsANumber;
break;
case Scope.Literal:
isNumericIndex = indexIsANumber;
isNumericValue = indexIsANumber;
break;
default:
isNumericIndex = false;
isNumericValue = false;
break;
}
var valueGetter = isNumericIndex
? ConstructValueGetter(scope, scopeIndexInt)
: ConstructValueGetter(scope, scopeIndexString);
if (customConditionName != null)
{
return(_customTypeRegistrar.ConstructCondition(customConditionName, element, valueGetter));
}
if (isNumericValue)
{
return(_factory.Create <INumberMatch>()
.Initialize(valueGetter, compareOperation, value, inverted, defaultValue));
}
return(_factory.Create <IStringMatch>()
.Initialize(valueGetter, compareOperation, text, inverted, ignoreCase));
}