public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
// first try to get the #r string literal token. If we couldn't, then we're not in a #r
// reference directive and we immediately bail.
SyntaxToken stringLiteral;
if (!TryGetStringLiteralToken(tree, position, out stringLiteral, cancellationToken))
{
return;
}
var textChangeSpan = GetTextChangeSpan(stringLiteral, position);
var gacHelper = new GlobalAssemblyCacheCompletionHelper(this, textChangeSpan, ItemRules.Instance);
var referenceResolver = document.Project.CompilationOptions.MetadataReferenceResolver;
// TODO: https://github.com/dotnet/roslyn/issues/5263
// Avoid dependency on a specific resolvers.
// The search paths should be provided by specialized workspaces:
// - InteractiveWorkspace for interactive window
// - ScriptWorkspace for loose .csx files (we don't have such workspace today)
ImmutableArray<string> searchPaths;
RuntimeMetadataReferenceResolver rtResolver;
WorkspaceMetadataFileReferenceResolver workspaceResolver;
if ((rtResolver = referenceResolver as RuntimeMetadataReferenceResolver) != null)
{
searchPaths = rtResolver.PathResolver.SearchPaths;
}
else if ((workspaceResolver = referenceResolver as WorkspaceMetadataFileReferenceResolver) != null)
{
searchPaths = workspaceResolver.PathResolver.SearchPaths;
}
else
{
return;
}
var fileSystemHelper = new FileSystemCompletionHelper(
this, textChangeSpan,
new CurrentWorkingDirectoryDiscoveryService(Directory.GetCurrentDirectory()),
Microsoft.CodeAnalysis.Glyph.OpenFolder,
Microsoft.CodeAnalysis.Glyph.Assembly, searchPaths, new[] { ".dll", ".exe" }, path => path.Contains(","), ItemRules.Instance);
var pathThroughLastSlash = GetPathThroughLastSlash(stringLiteral, position);
var documentPath = document.Project.IsSubmission ? null : document.FilePath;
context.AddItems(gacHelper.GetItems(pathThroughLastSlash, documentPath));
context.AddItems(fileSystemHelper.GetItems(pathThroughLastSlash, documentPath));
}
private ImmutableArray<CompletionItem> GetItems(SourceText text, int position, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
var line = text.Lines.GetLineFromPosition(position);
var lineText = text.ToString(TextSpan.FromBounds(line.Start, position));
var match = s_directiveRegex.Match(lineText);
if (!match.Success)
{
return ImmutableArray<CompletionItem>.Empty;
}
var quotedPathGroup = match.Groups[1];
var quotedPath = quotedPathGroup.Value;
var endsWithQuote = PathCompletionUtilities.EndsWithQuote(quotedPath);
if (endsWithQuote && (position >= line.Start + match.Length))
{
return ImmutableArray<CompletionItem>.Empty;
}
var buffer = text.Container.GetTextBuffer();
var snapshot = text.FindCorrespondingEditorTextSnapshot();
if (snapshot == null)
{
return ImmutableArray<CompletionItem>.Empty;
}
var fileSystem = CurrentWorkingDirectoryDiscoveryService.GetService(snapshot);
var searchPaths = ImmutableArray.Create(fileSystem.CurrentDirectory);
var helper = new FileSystemCompletionHelper(
this,
GetTextChangeSpan(text, position, quotedPathGroup),
fileSystem,
Glyph.OpenFolder,
Glyph.CSharpFile,
searchPaths: searchPaths,
allowableExtensions: new[] { ".csx" },
itemRules: ItemRules.Instance);
var pathThroughLastSlash = this.GetPathThroughLastSlash(text, position, quotedPathGroup);
return helper.GetItems(pathThroughLastSlash, documentPath: null);
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
// first try to get the #r string literal token. If we couldn't, then we're not in a #r
// reference directive and we immediately bail.
SyntaxToken stringLiteral;
if (!TryGetStringLiteralToken(tree, position, out stringLiteral, cancellationToken))
{
return;
}
var textChangeSpan = this.GetTextChangeSpan(stringLiteral, position);
var gacHelper = new GlobalAssemblyCacheCompletionHelper(this, textChangeSpan, itemRules: s_rules);
var text = await document.GetTextAsync(context.CancellationToken).ConfigureAwait(false);
var snapshot = text.FindCorrespondingEditorTextSnapshot();
if (snapshot == null)
{
// Passing null to GetFileSystemDiscoveryService raises an exception.
// Instead, return here since there is no longer snapshot for this document.
return;
}
var referenceResolver = document.Project.CompilationOptions.MetadataReferenceResolver;
// TODO: https://github.com/dotnet/roslyn/issues/5263
// Avoid dependency on a specific resolvers.
// The search paths should be provided by specialized workspaces:
// - InteractiveWorkspace for interactive window
// - ScriptWorkspace for loose .csx files (we don't have such workspace today)
ImmutableArray<string> searchPaths;
RuntimeMetadataReferenceResolver rtResolver;
WorkspaceMetadataFileReferenceResolver workspaceResolver;
if ((rtResolver = referenceResolver as RuntimeMetadataReferenceResolver) != null)
{
searchPaths = rtResolver.PathResolver.SearchPaths;
}
else if ((workspaceResolver = referenceResolver as WorkspaceMetadataFileReferenceResolver) != null)
{
searchPaths = workspaceResolver.PathResolver.SearchPaths;
}
else
{
return;
}
var fileSystemHelper = new FileSystemCompletionHelper(
this, textChangeSpan,
GetFileSystemDiscoveryService(snapshot),
Glyph.OpenFolder,
Glyph.Assembly,
searchPaths: searchPaths,
allowableExtensions: new[] { ".dll", ".exe" },
exclude: path => path.Contains(","),
itemRules: s_rules);
var pathThroughLastSlash = GetPathThroughLastSlash(stringLiteral, position);
var documentPath = document.Project.IsSubmission ? null : document.FilePath;
context.AddItems(gacHelper.GetItems(pathThroughLastSlash, documentPath));
context.AddItems(fileSystemHelper.GetItems(pathThroughLastSlash, documentPath));
}
private ImmutableArray<CompletionItem> GetItems(SourceText text, Document document, int position, CompletionTrigger triggerInfo, CancellationToken cancellationToken)
{
var line = text.Lines.GetLineFromPosition(position);
var lineText = text.ToString(TextSpan.FromBounds(line.Start, position));
var match = s_directiveRegex.Match(lineText);
if (!match.Success)
{
return ImmutableArray<CompletionItem>.Empty;
}
var quotedPathGroup = match.Groups[1];
var quotedPath = quotedPathGroup.Value;
var endsWithQuote = PathCompletionUtilities.EndsWithQuote(quotedPath);
if (endsWithQuote && (position >= line.Start + match.Length))
{
return ImmutableArray<CompletionItem>.Empty;
}
var buffer = text.Container.GetTextBuffer();
var snapshot = text.FindCorrespondingEditorTextSnapshot();
if (snapshot == null)
{
return ImmutableArray<CompletionItem>.Empty;
}
var fileSystem = CurrentWorkingDirectoryDiscoveryService.GetService(snapshot);
// TODO: https://github.com/dotnet/roslyn/issues/5263
// Avoid dependency on a specific resolver.
// The search paths should be provided by specialized workspaces:
// - InteractiveWorkspace for interactive window
// - ScriptWorkspace for loose .csx files (we don't have such workspace today)
var searchPaths = (document.Project.CompilationOptions.SourceReferenceResolver as SourceFileResolver)?.SearchPaths ?? ImmutableArray<string>.Empty;
var helper = new FileSystemCompletionHelper(
this,
GetTextChangeSpan(text, position, quotedPathGroup),
fileSystem,
Glyph.OpenFolder,
Glyph.CSharpFile,
searchPaths: searchPaths,
allowableExtensions: new[] { ".csx" },
itemRules: s_rules);
var pathThroughLastSlash = this.GetPathThroughLastSlash(text, position, quotedPathGroup);
return helper.GetItems(pathThroughLastSlash, documentPath: null);
}