public async Task TestGetSignatureHelpAsync()
{
var markup =
@"class A
{
void M()
{
M2({|caret:|}'a');
}
/// <summary>
/// M2 is a method.
/// </summary>
int M2(string a)
{
return 1;
}
}";
using var testLspServer = await CreateTestLspServerAsync(markup);
var expected = new LSP.SignatureHelp()
{
ActiveParameter = 0,
ActiveSignature = 0,
Signatures = new LSP.SignatureInformation[] { CreateSignatureInformation("int A.M2(string a)", "M2 is a method.", "a", "") }
};
var results = await RunGetSignatureHelpAsync(testLspServer, testLspServer.GetLocations("caret").Single());
AssertJsonEquals(expected, results);
}
public async Task TestGetSignatureHelpAsync()
{
var markup =
@"class A
{
void M()
{
M2({|caret:|}'a');
}
/// <summary>
/// M2 is a method.
/// </summary>
int M2(string a)
{
return 1;
}
}";
using var workspace = CreateTestWorkspace(markup, out var locations);
var expected = new LSP.SignatureHelp()
{
ActiveParameter = 0,
ActiveSignature = 0,
Signatures = new LSP.SignatureInformation[] { CreateSignatureInformation("int A.M2(string a)", "M2 is a method.", "a", "") }
};
var results = await RunGetSignatureHelpAsync(workspace.CurrentSolution, locations["caret"].Single());
AssertJsonEquals(expected, results);
}
public override async Task <LSP.SignatureHelp?> HandleRequestAsync(
LSP.TextDocumentPositionParams request,
RequestContext context,
CancellationToken cancellationToken
)
{
var document = context.Document;
if (document == null)
{
return(null);
}
var position = await document
.GetPositionFromLinePositionAsync(
ProtocolConversions.PositionToLinePosition(request.Position),
cancellationToken
)
.ConfigureAwait(false);
var providers = _allProviders.Where(
p => p.Metadata.Language == document.Project.Language
);
var triggerInfo = new SignatureHelpTriggerInfo(
SignatureHelpTriggerReason.InvokeSignatureHelpCommand
);
foreach (var provider in providers)
{
var items = await provider.Value
.GetItemsAsync(document, position, triggerInfo, cancellationToken)
.ConfigureAwait(false);
if (items != null)
{
var sigInfos = new ArrayBuilder <LSP.SignatureInformation>();
foreach (var item in items.Items)
{
LSP.SignatureInformation sigInfo;
if (context.ClientCapabilities?.HasVisualStudioLspCapability() == true)
{
sigInfo = new LSP.VSSignatureInformation
{
ColorizedLabel = GetSignatureClassifiedText(item)
};
}
else
{
sigInfo = new LSP.SignatureInformation();
}
sigInfo.Label = GetSignatureText(item);
sigInfo.Documentation = new LSP.MarkupContent
{
Kind = LSP.MarkupKind.PlainText,
Value = item.DocumentationFactory(cancellationToken).GetFullText()
};
sigInfo.Parameters = item.Parameters
.Select(
p =>
new LSP.ParameterInformation
{
Label = p.Name,
Documentation = new LSP.MarkupContent
{
Kind = LSP.MarkupKind.PlainText,
Value = p.DocumentationFactory(cancellationToken)
.GetFullText()
}
}
)
.ToArray();
sigInfos.Add(sigInfo);
}
var sigHelp = new LSP.SignatureHelp
{
ActiveSignature = GetActiveSignature(items),
ActiveParameter = items.ArgumentIndex,
Signatures = sigInfos.ToArrayAndFree()
};
return(sigHelp);
}
}
return(null);
}
