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));
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var syntaxTree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
if (syntaxTree.IsInNonUserCode(position, cancellationToken))
{
return;
}
var token = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken);
token = token.GetPreviousTokenIfTouchingWord(position);
if (!token.IsKind(SyntaxKind.OpenParenToken, SyntaxKind.CommaToken))
{
return;
}
var attributeArgumentList = token.Parent as AttributeArgumentListSyntax;
var attributeSyntax = token.Parent.Parent as AttributeSyntax;
if (attributeSyntax == null || attributeArgumentList == null)
{
return;
}
if (IsAfterNameColonArgument(token) || IsAfterNameEqualsArgument(token))
{
context.MakeExclusive(true);
}
// We actually want to collect two sets of named parameters to present the user. The
// normal named parameters that come from the attribute constructors. These will be
// presented like "foo:". And also the named parameters that come from the writable
// fields/properties in the attribute. These will be presented like "bar =".
var existingNamedParameters = GetExistingNamedParameters(attributeArgumentList, position);
var workspace = document.Project.Solution.Workspace;
var semanticModel = await document.GetSemanticModelForNodeAsync(attributeSyntax, cancellationToken).ConfigureAwait(false);
var nameColonItems = await GetNameColonItemsAsync(workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
var nameEqualsItems = await GetNameEqualsItemsAsync(workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
context.AddItems(nameEqualsItems);
// If we're after a name= parameter, then we only want to show name= parameters.
// Otherwise, show name: parameters too.
if (!IsAfterNameEqualsArgument(token))
{
context.AddItems(nameColonItems);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var options = context.Options;
var cancellationToken = context.CancellationToken;
using (Logger.LogBlock(FunctionId.Completion_SnippetCompletionProvider_GetItemsWorker_CSharp, cancellationToken))
{
// TODO (https://github.com/dotnet/roslyn/issues/5107): Enable in Interactive.
var workspace = document.Project.Solution.Workspace;
if (!workspace.CanApplyChange(ApplyChangesKind.ChangeDocument) ||
workspace.Kind == WorkspaceKind.Debugger ||
workspace.Kind == WorkspaceKind.Interactive)
{
return;
}
if (!options.GetOption(CSharpCompletionOptions.IncludeSnippets))
{
return;
}
var snippetCompletionItems = await document.GetUnionItemsFromDocumentAndLinkedDocumentsAsync(
UnionCompletionItemComparer.Instance,
(d, c) => GetSnippetsForDocumentAsync(d, position, workspace, c),
cancellationToken).ConfigureAwait(false);
context.AddItems(snippetCompletionItems);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var state = new ItemGetter(this, context.Document, context.Position, context.CancellationToken);
var items = await state.GetItemsAsync().ConfigureAwait(false);
if (items?.Any() == true)
{
context.MakeExclusive(true);
context.AddItems(items);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var triggerInfo = context.TriggerInfo;
var cancellationToken = context.CancellationToken;
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var items = GetItems(text, position, triggerInfo, cancellationToken);
context.AddItems(items);
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
if (!context.Options.GetOption(CompletionOptions.ShowXmlDocCommentCompletion))
{
return;
}
var items = await GetItemsWorkerAsync(context.Document, context.Position, context.TriggerInfo, context.CancellationToken).ConfigureAwait(false);
if (items != null)
{
context.AddItems(items);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var triggerInfo = context.TriggerInfo;
var options = context.Options;
var cancellationToken = context.CancellationToken;
// If we were triggered by typing a character, then do a semantic check to make sure
// we're still applicable. If not, then return immediately.
if (triggerInfo.TriggerReason == CompletionTriggerReason.TypeCharCommand)
{
var isSemanticTriggerCharacter = await IsSemanticTriggerCharacterAsync(document, position - 1, cancellationToken).ConfigureAwait(false);
if (!isSemanticTriggerCharacter)
{
return;
}
}
if (IsExclusive())
{
context.MakeExclusive(true);
}
using (Logger.LogBlock(FunctionId.Completion_SymbolCompletionProvider_GetItemsWorker, cancellationToken))
{
var regularItems = await GetItemsWorkerAsync(document, position, triggerInfo, options, preselect : false, cancellationToken : cancellationToken).ConfigureAwait(false);
context.AddItems(regularItems);
var preselectedItems = await GetItemsWorkerAsync(document, position, triggerInfo, options, preselect : true, cancellationToken : cancellationToken).ConfigureAwait(false);
context.AddItems(preselectedItems);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var options = context.Options;
var cancellationToken = context.CancellationToken;
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
if (!tree.IsEntirelyWithinCrefSyntax(position, cancellationToken))
{
return;
}
var token = tree.FindTokenOnLeftOfPosition(position, cancellationToken)
.GetPreviousTokenIfTouchingWord(position);
// To get a Speculative SemanticModel (which is much faster), we need to
// walk up to the node the DocumentationTrivia is attached to.
var parentNode = token.Parent.FirstAncestorOrSelf <DocumentationCommentTriviaSyntax>()?.ParentTrivia.Token.Parent;
if (parentNode == null)
{
return;
}
var semanticModel = await document.GetSemanticModelForNodeAsync(parentNode, cancellationToken).ConfigureAwait(false);
var symbols = GetSymbols(token, semanticModel, cancellationToken);
symbols = symbols.FilterToVisibleAndBrowsableSymbols(options.GetOption(CompletionOptions.HideAdvancedMembers, semanticModel.Language), semanticModel.Compilation);
if (!symbols.Any())
{
return;
}
context.MakeExclusive(true);
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var filterSpan = GetTextChangeSpan(text, position);
var items = CreateCompletionItems(document.Project.Solution.Workspace, semanticModel, symbols, token, filterSpan);
context.AddItems(items);
}
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);
DeclarationModifiers modifiers;
SyntaxToken token;
if (!IsPartialCompletionContext(tree, position, cancellationToken, out modifiers, out token))
{
return;
}
var items = await CreatePartialItemsAsync(document, position, modifiers, token, cancellationToken).ConfigureAwait(false);
if (items?.Any() == true)
{
context.MakeExclusive(true);
context.AddItems(items);
}
}
public override async Task ProduceCompletionListAsync(CompletionListContext context)
{
var document = context.Document;
var position = context.Position;
var triggerInfo = context.TriggerInfo;
var options = context.Options;
var cancellationToken = context.CancellationToken;
// If we were triggered by typing a character, then do a semantic check to make sure
// we're still applicable. If not, then return immediately.
if (triggerInfo.TriggerReason == CompletionTriggerReason.TypeCharCommand)
{
var isSemanticTriggerCharacter = await IsSemanticTriggerCharacterAsync(document, position - 1, cancellationToken).ConfigureAwait(false);
if (!isSemanticTriggerCharacter)
{
return;
}
}
if (IsExclusive())
{
context.MakeExclusive(true);
}
using (Logger.LogBlock(FunctionId.Completion_SymbolCompletionProvider_GetItemsWorker, cancellationToken))
{
var regularItems = await GetItemsWorkerAsync(document, position, triggerInfo, options, preselect: false, cancellationToken: cancellationToken).ConfigureAwait(false);
context.AddItems(regularItems);
var preselectedItems = await GetItemsWorkerAsync(document, position, triggerInfo, options, preselect: true, cancellationToken: cancellationToken).ConfigureAwait(false);
context.AddItems(preselectedItems);
}
}