public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var semanticModel = await document.ReuseExistingSpeculativeModelAsync(position, cancellationToken).ConfigureAwait(false);
var workspace = document.Project.Solution.Workspace;
var syntaxContext = CSharpSyntaxContext.CreateContext(workspace, semanticModel, position, cancellationToken);
if (!syntaxContext.IsAwaitKeywordContext(position))
{
return;
}
var method = syntaxContext.TargetToken.GetAncestor(node => node.IsAsyncSupportingFunctionSyntax());
var shouldMakeContainerAsync = method is not null && !method.GetModifiers().Any(SyntaxKind.AsyncKeyword);
var completionItem = CommonCompletionItem.Create(
displayText: SyntaxFacts.GetText(SyntaxKind.AwaitKeyword),
displayTextSuffix: "",
rules: CompletionItemRules.Default,
Glyph.Keyword,
description: RecommendedKeyword.CreateDisplayParts(SyntaxFacts.GetText(SyntaxKind.AwaitKeyword), string.Empty),
inlineDescription: shouldMakeContainerAsync ? CSharpFeaturesResources.Make_container_async : null,
isComplexTextEdit: shouldMakeContainerAsync);
context.AddItem(completionItem);
}
protected override CompletionItem CreateItem(RecommendedKeyword keyword, TextSpan span)
{
return(CommonCompletionItem.Create(
displayText: keyword.Keyword,
span: span,
description: keyword.DescriptionFactory(CancellationToken.None),
glyph: Glyph.Keyword,
shouldFormatOnCommit: keyword.ShouldFormatOnCommit));
}
protected override CompletionItem CreateItem(RecommendedKeyword keyword, TextSpan filterSpan)
{
return new CompletionItem(
this,
displayText: keyword.Keyword,
filterSpan: filterSpan,
descriptionFactory: c => Task.FromResult(keyword.DescriptionFactory(c)),
glyph: Glyph.Keyword,
shouldFormatOnCommit: keyword.ShouldFormatOnCommit);
}
protected override CompletionItem CreateItem(RecommendedKeyword keyword, CSharpSyntaxContext context)
{
var rules = context.IsPossibleTupleContext ? s_tupleRules : CompletionItemRules.Default;
return(CommonCompletionItem.Create(
displayText: keyword.Keyword,
description: keyword.DescriptionFactory(CancellationToken.None),
glyph: Glyph.Keyword,
rules: rules.WithMatchPriority(keyword.MatchPriority)
.WithFormatOnCommit(keyword.ShouldFormatOnCommit)));
}
public static ImmutableArray <SymbolDisplayPart> CreateRecommendedKeywordDisplayParts(
string keyword,
string toolTip
) => RecommendedKeyword.CreateDisplayParts(keyword, toolTip);
protected override CompletionItem CreateItem(Workspace workspace, TextSpan span, RecommendedKeyword keyword)
{
return(new CSharpCompletionItem(
workspace,
this,
displayText: keyword.Keyword,
filterSpan: span,
descriptionFactory: (c) => Task.FromResult(keyword.DescriptionFactory(c)),
glyph: Glyph.Keyword,
shouldFormatOnCommit: keyword.ShouldFormatOnCommit));
}
