// Determines the full name of the Type of the property corresponding to an attribute with the given name.
private static string GetPropertyType(string name, IEnumerable <TagHelperDescriptor> descriptors)
{
foreach (var descriptor in descriptors)
{
if (TagHelperMatchingConventions.TryGetFirstBoundAttributeMatch(name, descriptor, out var firstBoundAttribute, out var indexerMatch, out var _, out var _))
{
if (indexerMatch)
{
return(firstBoundAttribute.IndexerTypeName);
}
else
{
return(firstBoundAttribute.TypeName);
}
}
}
return(null);
}
// Create a TryParseResult for given name, filling in binding details.
private static TryParseResult CreateTryParseResult(
string name,
IEnumerable <TagHelperDescriptor> descriptors,
HashSet <string> processedBoundAttributeNames)
{
var isBoundAttribute = false;
var isBoundNonStringAttribute = false;
var isBoundBooleanAttribute = false;
var isMissingDictionaryKey = false;
var isDirectiveAttribute = false;
foreach (var descriptor in descriptors)
{
if (TagHelperMatchingConventions.TryGetFirstBoundAttributeMatch(
name,
descriptor,
out var firstBoundAttribute,
out var indexerMatch,
out var parameterMatch,
out var boundAttributeParameter))
{
isBoundAttribute = true;
if (parameterMatch)
{
isBoundNonStringAttribute = !boundAttributeParameter.IsStringProperty;
isBoundBooleanAttribute = boundAttributeParameter.IsBooleanProperty;
isMissingDictionaryKey = false;
}
else
{
isBoundNonStringAttribute = !firstBoundAttribute.ExpectsStringValue(name);
isBoundBooleanAttribute = firstBoundAttribute.ExpectsBooleanValue(name);
isMissingDictionaryKey = firstBoundAttribute.IndexerNamePrefix != null &&
name.Length == firstBoundAttribute.IndexerNamePrefix.Length;
}
isDirectiveAttribute = firstBoundAttribute.IsDirectiveAttribute();
break;
}
}
var isDuplicateAttribute = false;
if (isBoundAttribute && !processedBoundAttributeNames.Add(name))
{
// A bound attribute with the same name has already been processed.
isDuplicateAttribute = true;
}
return(new TryParseResult
{
AttributeName = name,
IsBoundAttribute = isBoundAttribute,
IsBoundNonStringAttribute = isBoundNonStringAttribute,
IsBoundBooleanAttribute = isBoundBooleanAttribute,
IsMissingDictionaryKey = isMissingDictionaryKey,
IsDuplicateAttribute = isDuplicateAttribute,
IsDirectiveAttribute = isDirectiveAttribute
});
}