public override CompletionStartData InitializeCompletion(CompletionTrigger trigger, SnapshotPoint triggerLocation, CancellationToken token)
{
//we don't care need a real document here we're doing very basic resolution for triggering
var spine = GetSpineParser(triggerLocation);
var rr = MSBuildResolver.Resolve(spine, triggerLocation.Snapshot.GetTextSource(), MSBuildRootDocument.Empty, null);
if (rr?.LanguageElement != null)
{
if (ExpressionCompletion.IsPossibleExpressionCompletionContext(spine))
{
string expression = GetAttributeOrElementValueToCaret(spine, triggerLocation);
var triggerState = ExpressionCompletion.GetTriggerState(
expression,
trigger.Character,
rr.IsCondition(),
out int triggerLength,
out ExpressionNode triggerExpression,
out var listKind,
out IReadOnlyList <ExpressionNode> comparandVariables
);
if (triggerState != ExpressionCompletion.TriggerState.None)
{
return(new CompletionStartData(CompletionParticipation.ProvidesItems, new SnapshotSpan(triggerLocation.Snapshot, triggerLocation.Position - triggerLength, triggerLength)));
}
}
}
return(base.InitializeCompletion(trigger, triggerLocation, token));
}
public override CompletionStartData InitializeCompletion(CompletionTrigger trigger, SnapshotPoint triggerLocation, CancellationToken token)
{
//we don't care need a real document here we're doing very basic resolution for triggering
var spine = XmlParser.GetSpineParser(triggerLocation);
var rr = MSBuildResolver.Resolve(spine.Clone(), triggerLocation.Snapshot.GetTextSource(), MSBuildRootDocument.Empty, null, token);
if (rr?.ElementSyntax != null)
{
var reason = ConvertReason(trigger.Reason, trigger.Character);
if (reason.HasValue && IsPossibleExpressionCompletionContext(spine))
{
string expression = spine.GetIncompleteValue(triggerLocation.Snapshot);
var triggerState = GetTriggerState(
expression,
reason.Value,
trigger.Character,
rr.IsCondition(),
out int triggerLength,
out ExpressionNode _,
out var _,
out IReadOnlyList <ExpressionNode> _
);
if (triggerState != TriggerState.None)
{
return(new CompletionStartData(CompletionParticipation.ProvidesItems, new SnapshotSpan(triggerLocation.Snapshot, triggerLocation.Position - triggerLength, triggerLength)));
}
}
}
return(base.InitializeCompletion(trigger, triggerLocation, token));
}
List <(int offset, MSBuildResolveResult result)> Resolve(string doc)
{
var functionTypeProvider = new RoslynFunctionTypeProvider(null);
return(MSBuildTestHelpers
.SelectAtMarkers(doc, "hello.csproj", (state) => MSBuildResolver.Resolve(state.parser.Clone(), state.textSource, state.doc, functionTypeProvider))
.ToList());
}
internal MSBuildResolveResult ResolveCurrentLocation()
{
var doc = GetDocument();
if (Tracker == null || doc == null)
{
return(null);
}
Tracker.UpdateEngine();
return(MSBuildResolver.Resolve(Tracker.Engine, Editor.CreateDocumentSnapshot(), doc));
}
public async Task <QuickInfoItem> GetQuickInfoItemAsync(IAsyncQuickInfoSession session, CancellationToken cancellationToken)
{
var snapshot = textBuffer.CurrentSnapshot;
var result = await parser.GetOrProcessAsync(snapshot, cancellationToken);
var doc = result?.MSBuildDocument;
if (doc == null)
{
return(null);
}
var trigger = session.GetTriggerPoint(textBuffer);
var offset = trigger.GetPosition(snapshot);
var spine = parser.XmlParser.GetSpineParser(new SnapshotPoint(snapshot, offset));
var annotations = MSBuildNavigation.GetAnnotationsAtOffset <NavigationAnnotation> (doc, offset)?.ToList();
if (annotations != null && annotations.Count > 0)
{
return(CreateQuickInfo(snapshot, annotations));
}
//FIXME: can we avoid awaiting this unless we actually need to resolve a function? need to propagate async downwards
await provider.FunctionTypeProvider.EnsureInitialized(cancellationToken);
var rr = MSBuildResolver.Resolve(
spine, snapshot.GetTextSource(), doc, provider.FunctionTypeProvider, cancellationToken
);
if (rr != null)
{
if (rr.ReferenceKind == MSBuildReferenceKind.NuGetID)
{
return(await CreateNuGetQuickInfo(snapshot, doc, rr, cancellationToken));
}
var info = rr.GetResolvedReference(doc, provider.FunctionTypeProvider);
if (info != null)
{
var element = await provider.DisplayElementFactory.GetInfoTooltipElement(
session.TextView.TextBuffer, doc, info, rr, cancellationToken
);
return(new QuickInfoItem(
snapshot.CreateTrackingSpan(rr.ReferenceOffset, rr.ReferenceLength, SpanTrackingMode.EdgeInclusive),
element));
}
}
return(null);
}
// this is primarily used to pass info from GetCompletionContextAsync to GetDocumentationAsync
// but also reuses the values calculated for expression completion in GetCompletionContextAsync
// if it's determined not be be expression completion but actually ends up
// in GetElementCompletionsAsync or GetAttributeCompletionsAsync
async Task <MSBuildCompletionSessionContext> GetSessionContext(IAsyncCompletionSession session, SnapshotPoint triggerLocation, CancellationToken token)
{
if (session.Properties.TryGetProperty <MSBuildCompletionSessionContext> (typeof(MSBuildCompletionSessionContext), out var context))
{
return(context);
}
var parser = GetParser();
var parseResult = await parser.GetOrParseAsync((ITextSnapshot2)triggerLocation.Snapshot, token);
var doc = parseResult.MSBuildDocument ?? MSBuildRootDocument.Empty;
var spine = parser.GetSpineParser(triggerLocation);
var rr = MSBuildResolver.Resolve(GetSpineParser(triggerLocation), triggerLocation.Snapshot.GetTextSource(), doc, provider.FunctionTypeProvider);
context = new MSBuildCompletionSessionContext {
doc = doc, rr = rr, spine = spine
};
session.Properties.AddProperty(typeof(MSBuildCompletionSessionContext), context);
return(context);
}
// this is primarily used to pass info from GetCompletionContextAsync to GetDocumentationAsync
// but also reuses the values calculated for expression completion in GetCompletionContextAsync
// if it's determined not be be expression completion but actually ends up
// in GetElementCompletionsAsync or GetAttributeCompletionsAsync
async Task <MSBuildCompletionSessionContext> GetSessionContext(IAsyncCompletionSession session, SnapshotPoint triggerLocation, CancellationToken token)
{
if (session.Properties.TryGetProperty <MSBuildCompletionSessionContext> (typeof(MSBuildCompletionSessionContext), out var context))
{
return(context);
}
MSBuildParseResult parseResult = parser.LastOutput ?? await parser.GetOrProcessAsync(triggerLocation.Snapshot, token);
var doc = parseResult.MSBuildDocument ?? MSBuildRootDocument.Empty;
var spine = XmlParser.GetSpineParser(triggerLocation);
// clone the spine because the resolver alters it
var rr = MSBuildResolver.Resolve(spine.Clone(), triggerLocation.Snapshot.GetTextSource(), doc, provider.FunctionTypeProvider, token);
context = new MSBuildCompletionSessionContext {
doc = doc, rr = rr, spine = spine
};
session.Properties.AddProperty(typeof(MSBuildCompletionSessionContext), context);
return(context);
}
GetHighlightsAsync(SnapshotPoint caretLocation, CancellationToken token)
{
var snapshot = caretLocation.Snapshot;
var spineParser = parser.XmlParser.GetSpineParser(caretLocation);
var textSource = snapshot.GetTextSource();
var doc = parser.LastOutput?.MSBuildDocument;
if (doc == null)
{
return(Empty);
}
var rr = MSBuildResolver.Resolve(spineParser, textSource, doc, provider.FunctionTypeProvider, token);
if (!MSBuildReferenceCollector.CanCreate(rr))
{
return(Empty);
}
var parseResult = await parser.GetOrProcessAsync(snapshot, token).ConfigureAwait(false);
doc = parseResult?.MSBuildDocument;
if (doc == null)
{
return(Empty);
}
var references = new List <(ReferenceUsage usage, SnapshotSpan span)> ();
var collector = MSBuildReferenceCollector.Create(
rr, provider.FunctionTypeProvider,
r => references.Add((r.Usage, new SnapshotSpan(snapshot, r.Offset, r.Length))));
await Task.Run(() => collector.Run(doc, token: token), token);
return(
new SnapshotSpan(caretLocation.Snapshot, rr.ReferenceOffset, rr.ReferenceLength),
references.ToImmutableArray());
}
/// <summary>
/// Gets a resolved reference from the document. The schema may be stale, in which case it returns false.
/// </summary>
public bool GetResolvedReference(ITextBuffer buffer, SnapshotPoint position, out MSBuildRootDocument doc, out MSBuildResolveResult rr)
{
// grab the field into a local to make this thread safe
var cached = this.cached;
// if the cached result is up to date, return it
if (cached.Position == position)
{
doc = cached.Doc;
rr = cached.Result;
return(true);
}
var parser = ParserProvider.GetParser(buffer);
var lastResult = parser.LastOutput;
// if it's still at the same position and the last result is the same stale version, there's no point trying again
if (cached.Position == position && lastResult.MSBuildDocument == cached.Doc)
{
doc = cached.Doc;
rr = cached.Result;
return(false);
}
// actually do the work
cached.Doc = doc = lastResult.MSBuildDocument;
cached.Result = rr = MSBuildResolver.Resolve(
parser.XmlParser.GetSpineParser(position),
position.Snapshot.GetTextSource(),
doc, FunctionTypeProvider);
cached.Position = position;
this.cached = cached;
return(lastResult.Snapshot == position.Snapshot);
}
List <(int offset, MSBuildResolveResult result)> Resolve(string doc)
{
return(MSBuildTestHelpers
.SelectAtMarkers(doc, "hello.csproj", (state) => MSBuildResolver.Resolve(state.parser, state.textDoc, state.doc))
.ToList());
}