// Internal for testing
internal static bool AtMarkupTransitionCompletionPoint(RazorSyntaxNode owner)
{
/* Only provide IntelliSense for C# code blocks, of the form:
* @{ }, @code{ }, @functions{ }, @if(true){ }
*
* Note for the `< te` and `< te=""` cases:
* The cases are not handled by AtMarkupTransitionCompletionPoint but
* rather by the HtmlFactsService which purposely prohibits the completion
* when it's unable to extract the tag contents. This ensures we aren't
* providing incorrect completion in the above two syntactically invalid
* scenarios.
*/
var encapsulatingMarkupElementNodeSeen = false;
foreach (var ancestor in owner.Ancestors())
{
if (ancestor is MarkupElementSyntax markupNode)
{
if (encapsulatingMarkupElementNodeSeen)
{
return(false);
}
encapsulatingMarkupElementNodeSeen = true;
}
if (ancestor is CSharpCodeBlockSyntax)
{
return(true);
}
}
return(false);
}
// Internal for testing
internal static bool AtMarkupTransitionCompletionPoint(RazorSyntaxNode owner)
{
/* Only provide IntelliSense for C# code blocks, of the form:
* @{ }, @code{ }, @functions{ }, @if(true){ }
*
* Note for the `< te` and `< te=""` cases:
* The cases are not handled by AtMarkupTransitionCompletionPoint but
* rather by the HtmlFactsService which purposely prohibits the completion
* when it's unable to extract the tag contents. This ensures we aren't
* providing incorrect completion in the above two syntactically invalid
* scenarios.
*/
var closestSignificantAncestor = owner.Ancestors().FirstOrDefault(node =>
{
if (node is MarkupElementSyntax markupNode && markupNode.ChildNodes().Count != 1)
{
return(true);
}
if (node is CSharpCodeBlockSyntax)
{
return(true);
}
return(false);
});
return(closestSignificantAncestor is CSharpCodeBlockSyntax);
}
public SyntaxResult(SyntaxNode node, SyntaxKind kind, RazorCodeDocument razorCodeDocument)
{
var range = node.GetRange(razorCodeDocument.Source);
Range = range;
Kind = kind;
}
// Internal for testing
internal static bool TryGetElementInfo(RazorSyntaxNode element, out string containingTagName, out IEnumerable <string> attributeNames)
{
if (element is MarkupStartTagSyntax startTag)
{
containingTagName = startTag.Name.GetContent();
attributeNames = ExtractAttributeNames(startTag.Attributes);
return(true);
}
if (element is MarkupTagHelperStartTagSyntax startTagHelper)
{
containingTagName = startTagHelper.Name.GetContent();
attributeNames = ExtractAttributeNames(startTagHelper.Attributes);
return(true);
}
containingTagName = null;
attributeNames = default;
return(false);
}
// Internal for testing
internal static bool TryGetAttributeInfo(
RazorSyntaxNode attributeLeafOwner,
out TextSpan?prefixLocation,
out string attributeName,
out TextSpan attributeNameLocation,
out string parameterName,
out TextSpan parameterLocation)
{
var attribute = attributeLeafOwner.Parent;
// The null check on the `NamePrefix` field is required for cases like:
// `<svg xml:base=""x| ></svg>` where there's no `NamePrefix` available.
switch (attribute)
{
case MarkupMinimizedAttributeBlockSyntax minimizedMarkupAttribute:
prefixLocation = minimizedMarkupAttribute.NamePrefix?.Span;
TryExtractIncompleteDirectiveAttribute(
minimizedMarkupAttribute.Name.GetContent(),
minimizedMarkupAttribute.Name.Span,
out attributeName,
out attributeNameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupAttributeBlockSyntax markupAttribute:
prefixLocation = markupAttribute.NamePrefix?.Span;
TryExtractIncompleteDirectiveAttribute(
markupAttribute.Name.GetContent(),
markupAttribute.Name.Span,
out attributeName,
out attributeNameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupMinimizedTagHelperAttributeSyntax minimizedTagHelperAttribute:
prefixLocation = minimizedTagHelperAttribute.NamePrefix?.Span;
TryExtractIncompleteDirectiveAttribute(
minimizedTagHelperAttribute.Name.GetContent(),
minimizedTagHelperAttribute.Name.Span,
out attributeName,
out attributeNameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupTagHelperAttributeSyntax tagHelperAttribute:
prefixLocation = tagHelperAttribute.NamePrefix?.Span;
TryExtractIncompleteDirectiveAttribute(
tagHelperAttribute.Name.GetContent(),
tagHelperAttribute.Name.Span,
out attributeName,
out attributeNameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupTagHelperDirectiveAttributeSyntax directiveAttribute:
{
var attributeNameNode = directiveAttribute.Name;
var directiveAttributeTransition = directiveAttribute.Transition;
var nameStart = directiveAttributeTransition?.SpanStart ?? attributeNameNode.SpanStart;
var nameEnd = attributeNameNode?.Span.End ?? directiveAttributeTransition.Span.End;
prefixLocation = directiveAttribute.NamePrefix?.Span;
attributeName = string.Concat(directiveAttributeTransition?.GetContent(), attributeNameNode?.GetContent());
attributeNameLocation = new TextSpan(nameStart, nameEnd - nameStart);
parameterName = directiveAttribute.ParameterName?.GetContent();
parameterLocation = directiveAttribute.ParameterName?.Span ?? default;
return(true);
}
case MarkupMinimizedTagHelperDirectiveAttributeSyntax minimizedDirectiveAttribute:
{
var attributeNameNode = minimizedDirectiveAttribute.Name;
var directiveAttributeTransition = minimizedDirectiveAttribute.Transition;
var nameStart = directiveAttributeTransition?.SpanStart ?? attributeNameNode.SpanStart;
var nameEnd = attributeNameNode?.Span.End ?? directiveAttributeTransition.Span.End;
prefixLocation = minimizedDirectiveAttribute.NamePrefix?.Span;
attributeName = string.Concat(directiveAttributeTransition?.GetContent(), attributeNameNode?.GetContent());
attributeNameLocation = new TextSpan(nameStart, nameEnd - nameStart);
parameterName = minimizedDirectiveAttribute.ParameterName?.GetContent();
parameterLocation = minimizedDirectiveAttribute.ParameterName?.Span ?? default;
return(true);
}
}
prefixLocation = default;
attributeName = null;
attributeNameLocation = default;
parameterName = null;
parameterLocation = default;
return(false);
}
// Internal for testing
internal static bool TryGetAttributeInfo(
RazorSyntaxNode attributeLeafOwner,
out TextSpan prefixLocation,
out string name,
out TextSpan nameLocation,
out string parameterName,
out TextSpan parameterLocation)
{
var attribute = attributeLeafOwner.Parent;
switch (attribute)
{
case MarkupMinimizedAttributeBlockSyntax minimizedMarkupAttribute:
prefixLocation = minimizedMarkupAttribute.NamePrefix.Span;
TryExtractIncompleteDirectiveAttribute(
minimizedMarkupAttribute.Name.GetContent(),
minimizedMarkupAttribute.Name.Span,
out name,
out nameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupAttributeBlockSyntax markupAttribute:
prefixLocation = markupAttribute.NamePrefix.Span;
TryExtractIncompleteDirectiveAttribute(
markupAttribute.Name.GetContent(),
markupAttribute.Name.Span,
out name,
out nameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupMinimizedTagHelperAttributeSyntax minimizedTagHelperAttribute:
prefixLocation = minimizedTagHelperAttribute.NamePrefix.Span;
TryExtractIncompleteDirectiveAttribute(
minimizedTagHelperAttribute.Name.GetContent(),
minimizedTagHelperAttribute.Name.Span,
out name,
out nameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupTagHelperAttributeSyntax tagHelperAttribute:
prefixLocation = tagHelperAttribute.NamePrefix.Span;
TryExtractIncompleteDirectiveAttribute(
tagHelperAttribute.Name.GetContent(),
tagHelperAttribute.Name.Span,
out name,
out nameLocation,
out parameterName,
out parameterLocation);
return(true);
case MarkupTagHelperDirectiveAttributeSyntax directiveAttribute:
{
var attributeName = directiveAttribute.Name;
var directiveAttributeTransition = directiveAttribute.Transition;
var nameStart = directiveAttributeTransition?.SpanStart ?? attributeName.SpanStart;
var nameEnd = attributeName?.Span.End ?? directiveAttributeTransition.Span.End;
prefixLocation = directiveAttribute.NamePrefix.Span;
name = string.Concat(directiveAttributeTransition?.GetContent(), attributeName?.GetContent());
nameLocation = new TextSpan(nameStart, nameEnd - nameStart);
parameterName = directiveAttribute.ParameterName?.GetContent();
parameterLocation = directiveAttribute.ParameterName?.Span ?? default;
return(true);
}
case MarkupMinimizedTagHelperDirectiveAttributeSyntax minimizedDirectiveAttribute:
{
var attributeName = minimizedDirectiveAttribute.Name;
var directiveAttributeTransition = minimizedDirectiveAttribute.Transition;
var nameStart = directiveAttributeTransition?.SpanStart ?? attributeName.SpanStart;
var nameEnd = attributeName?.Span.End ?? directiveAttributeTransition.Span.End;
prefixLocation = minimizedDirectiveAttribute.NamePrefix.Span;
name = string.Concat(directiveAttributeTransition?.GetContent(), attributeName?.GetContent());
nameLocation = new TextSpan(nameStart, nameEnd - nameStart);
parameterName = minimizedDirectiveAttribute.ParameterName?.GetContent();
parameterLocation = minimizedDirectiveAttribute.ParameterName?.Span ?? default;
return(true);
}
}
prefixLocation = default;
name = null;
nameLocation = default;
parameterName = null;
parameterLocation = default;
return(false);
}
public SyntaxNode(GreenNode green, SyntaxNode parent, int position)
{
Green = green;
Parent = parent;
Position = position;
}