private async Task <TextSpan> GetTextChangeSpanAsync(Document document, int position, CancellationToken cancellationToken)
{
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
return(CompletionUtilities.GetTextChangeSpan(text, position));
}
public override bool IsTriggerCharacter(SourceText text, int characterPosition, OptionSet options)
{
return(CompletionUtilities.IsTriggerAfterSpaceOrStartOfWordCharacter(text, characterPosition, options));
}
public override TextSpan GetDefaultCompletionListSpan(SourceText text, int caretPosition)
{
return(CompletionUtilities.GetCompletionItemSpan(text, caretPosition));
}
internal override bool IsInsertionTrigger(SourceText text, int insertedCharacterPosition, OptionSet options)
{
return(CompletionUtilities.IsTriggerCharacter(text, insertedCharacterPosition, options));
}
public override bool SendEnterThroughToEditor(CompletionItem completionItem, string textTypedSoFar)
{
return(CompletionUtilities.SendEnterThroughToEditor(completionItem, textTypedSoFar));
}
public override bool IsCommitCharacter(CompletionItem completionItem, char ch, string textTypedSoFar)
{
return(CompletionUtilities.IsCommitCharacter(completionItem, ch, textTypedSoFar));
}
protected override TextSpan GetFilterSpan(SourceText text, int position)
{
return(CompletionUtilities.GetTextChangeSpan(text, position));
}
protected override async Task <IEnumerable <CompletionItem> > GetItemsWorkerAsync(Document document, int position, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
if (triggerInfo.IsDebugger)
{
return(null);
}
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = tree.FindTokenOnLeftOfPosition(position, cancellationToken);
var parentTrivia = token.GetAncestor <DocumentationCommentTriviaSyntax>();
if (parentTrivia == null)
{
return(null);
}
var items = new List <CompletionItem>();
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var span = CompletionUtilities.GetTextChangeSpan(text, position);
var attachedToken = parentTrivia.ParentTrivia.Token;
if (attachedToken.Kind() == SyntaxKind.None)
{
return(null);
}
var semanticModel = await document.GetSemanticModelForNodeAsync(attachedToken.Parent, cancellationToken).ConfigureAwait(false);
ISymbol declaredSymbol = null;
var memberDeclaration = attachedToken.GetAncestor <MemberDeclarationSyntax>();
if (memberDeclaration != null)
{
declaredSymbol = semanticModel.GetDeclaredSymbol(memberDeclaration, cancellationToken);
}
else
{
var typeDeclaration = attachedToken.GetAncestor <TypeDeclarationSyntax>();
if (typeDeclaration != null)
{
declaredSymbol = semanticModel.GetDeclaredSymbol(typeDeclaration, cancellationToken);
}
}
if (declaredSymbol != null)
{
items.AddRange(GetTagsForSymbol(declaredSymbol, span, parentTrivia, token));
}
if (token.Parent.Kind() == SyntaxKind.XmlEmptyElement || token.Parent.Kind() == SyntaxKind.XmlText ||
(token.Parent.IsKind(SyntaxKind.XmlElementEndTag) && token.IsKind(SyntaxKind.GreaterThanToken)) ||
(token.Parent.IsKind(SyntaxKind.XmlName) && token.Parent.IsParentKind(SyntaxKind.XmlEmptyElement)))
{
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement)
{
items.AddRange(GetNestedTags(span));
}
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement && ((XmlElementSyntax)token.Parent.Parent).StartTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(span));
}
if (token.Parent.IsParentKind(SyntaxKind.XmlEmptyElement) & token.Parent.Parent.IsParentKind(SyntaxKind.XmlElement))
{
var element = (XmlElementSyntax)token.Parent.Parent.Parent;
if (element.StartTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(span));
}
}
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement && ((XmlElementSyntax)token.Parent.Parent).StartTag.Name.LocalName.ValueText == "listheader")
{
items.AddRange(GetListHeaderItems(span));
}
if (token.Parent.Parent is DocumentationCommentTriviaSyntax)
{
items.AddRange(GetTopLevelSingleUseNames(parentTrivia, span));
items.AddRange(GetTopLevelRepeatableItems(span));
}
}
if (token.Parent.Kind() == SyntaxKind.XmlElementStartTag)
{
var startTag = (XmlElementStartTagSyntax)token.Parent;
if (token == startTag.GreaterThanToken && startTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(span));
}
if (token == startTag.GreaterThanToken && startTag.Name.LocalName.ValueText == "listheader")
{
items.AddRange(GetListHeaderItems(span));
}
}
items.AddRange(GetAlwaysVisibleItems(span));
return(items);
}
public override bool IsTriggerCharacter(SourceText text, int characterPosition, OptionSet options)
{
var ch = text[characterPosition];
return(ch == ' ' || (CompletionUtilities.IsStartingNewWord(text, characterPosition) && options.GetOption(CompletionOptions.TriggerOnTypingLetters, LanguageNames.CSharp)));
}
