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Using FQN instead of adding import during ENC session #35194

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Apr 25, 2019
Merged

Using FQN instead of adding import during ENC session #35194

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33 changes: 26 additions & 7 deletions src/Features/Core/Portable/Completion/Providers/AbstractTypeImportCompletionProvider.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.AddImports;
using Microsoft.CodeAnalysis.Debugging;
using Microsoft.CodeAnalysis.Editing;
using Microsoft.CodeAnalysis.Experiments;
using Microsoft.CodeAnalysis.Formatting;
Expand Down Expand Up @@ -174,7 +175,14 @@ internal override async Task<CompletionChange> GetChangeAsync(Document document,
var containingNamespace = TypeImportCompletionItem.GetContainingNamespace(completionItem);
Debug.Assert(containingNamespace != null);

if (document.Project.Solution.Workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
if (ShouldCompleteWithFullyQualifyTypeName(document))
{
var fullyQualifiedName = $"{containingNamespace}.{completionItem.DisplayText}";
var change = new TextChange(completionListSpan, fullyQualifiedName);

return CompletionChange.Create(change);
}
else
{
// Find context node so we can use it to decide where to insert using/imports.
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
Expand Down Expand Up @@ -218,14 +226,25 @@ internal override async Task<CompletionChange> GetChangeAsync(Document document,

return CompletionChange.Create(Utilities.Collapse(newText, builder.ToImmutableAndFree()));
}
else

static bool ShouldCompleteWithFullyQualifyTypeName(Document document)
{
// For workspace that doesn't support document change, e.g. DebuggerIntellisense
// we complete the type name in its fully qualified form instead.
var fullyQualifiedName = $"{containingNamespace}.{completionItem.DisplayText}";
var change = new TextChange(completionListSpan, fullyQualifiedName);
var workspace = document.Project.Solution.Workspace;

return CompletionChange.Create(change);
// Certain types of workspace don't support document change, e.g. DebuggerIntellisense
if (!workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
return true;
}

// During an EnC session, adding import is not supported.
var encService = workspace.Services.GetService<IDebuggingWorkspaceService>()?.EditAndContinueServiceOpt;
if (encService?.EditSession != null)
{
return true;
}

return false;
}
}

Expand Down