protected override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult result, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var tree = ctx.SyntaxTree;
var model = ctx.SemanticModel;
if (tree.IsInNonUserCode (position, cancellationToken))
return Task.FromResult (Enumerable.Empty<CompletionData> ());
if (!ctx.CSharpSyntaxContext.IsAnyExpressionContext)
return Task.FromResult (Enumerable.Empty<CompletionData> ());
var enclosingType = model.GetEnclosingNamedType (position, cancellationToken);
var memberMethods = enclosingType.GetMembers ().OfType<IMethodSymbol> ().Where (m => m.MethodKind == MethodKind.Ordinary).ToArray ();
var list = new List<CompletionData> ();
foreach (var type in ctx.InferredTypes) {
if (type.TypeKind != TypeKind.Delegate)
continue;
AddCompatibleMethods (engine, list, type, memberMethods, cancellationToken);
string delegateName = null;
if (ctx.TargetToken.IsKind (SyntaxKind.PlusEqualsToken)) {
delegateName = GuessEventHandlerBaseName (ctx.LeftToken.Parent, ctx.ContainingTypeDeclaration);
}
AddDelegateHandlers (list, ctx.TargetToken.Parent, model, engine, result, type, position, delegateName, cancellationToken);
}
if (list.Count > 0) {
result.AutoSelect = false;
}
return Task.FromResult ((IEnumerable<CompletionData>)list);
}
public IEnumerable<Completion> GetCompletionEntries(CompletionContext context)
{
ImageSource imageSource = GetImageSource();
var group = "Main";
try
{
var text = context.Snapshot.GetText().Substring(0, context.SpanStart + context.SpanLength);
var lines = text.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
for (int i = lines.Length - 1; i >= 0; i--)
{
var line = lines[i].Trim();
if (line.StartsWith("group"))
group = line.Replace("group", "").Trim();
}
}
catch (Exception)
{
}
var searchResults =
Paket.Dependencies.Locate(context.Snapshot.TextBuffer.GetFileName())
.GetInstalledPackages()
.Where(x => Paket.Domain.GroupName(x.Item1).Equals(Paket.Domain.GroupName(group)))
.Select(x => x.Item2)
.ToArray();
foreach (var value in searchResults)
{
yield return new Completion2(value, value, null, imageSource, "iconAutomationText");
}
}
protected virtual CompletionContext GetCompletionContext(IEditorView view)
{
var reader = view.GetReader();
var token = reader.ReadTokenReverse();
var completionContext = new CompletionContext();
if (token == null)
return completionContext;
var tokenText = reader.PeekText(token.Length);
if (token.Key == "Identifier" || (token.Key == "Punctuation" && tokenText == "."))
{
var memberExpression = DetermineFullMemberExpression(tokenText, reader);
if (memberExpression.Contains("."))
completionContext.IsObjectMember = true;
if (memberExpression.StartsWith("this."))
{
completionContext.IsDocumentProperty = true;
var completedPath = memberExpression.Substring("this.".Length);
var lastDot = completedPath.LastIndexOf('.');
completedPath = lastDot >= 0 ? completedPath.Substring(0, lastDot) : "";
completionContext.CompletedPropertyPath = completedPath;
}
}
return completionContext;
}
protected override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var position = completionContext.Position;
var document = completionContext.Document;
var syntaxTree = ctx.SyntaxTree;
if (syntaxTree.IsInNonUserCode(position, cancellationToken) ||
syntaxTree.IsPreProcessorDirectiveContext(position, cancellationToken))
return Task.FromResult (Enumerable.Empty<CompletionData> ());
if (!syntaxTree.IsRightOfDotOrArrowOrColonColon(position, cancellationToken))
return Task.FromResult (Enumerable.Empty<CompletionData> ());
var ma = ctx.LeftToken.Parent as MemberAccessExpressionSyntax;
if (ma == null)
return Task.FromResult (Enumerable.Empty<CompletionData> ());
var model = ctx.CSharpSyntaxContext.SemanticModel;
var symbolInfo = model.GetSymbolInfo (ma.Expression);
if (symbolInfo.Symbol == null || symbolInfo.Symbol.Kind != SymbolKind.Parameter)
return Task.FromResult (Enumerable.Empty<CompletionData> ());
var list = new List<CompletionData> ();
var within = model.GetEnclosingNamedTypeOrAssembly(position, cancellationToken);
var addedSymbols = new HashSet<string> ();
foreach (var ano in ma.AncestorsAndSelf ().OfType<AnonymousMethodExpressionSyntax> ()) {
Analyze (engine, model, ma.Expression, within, list, ano.ParameterList, symbolInfo.Symbol, addedSymbols, cancellationToken);
}
foreach (var ano in ma.AncestorsAndSelf ().OfType<ParenthesizedLambdaExpressionSyntax> ()) {
Analyze (engine, model, ma.Expression, within, list, ano.ParameterList, symbolInfo.Symbol, addedSymbols, cancellationToken);
}
return Task.FromResult ((IEnumerable<CompletionData>)list);
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var model = ctx.SemanticModel;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode (completionContext.Position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
var token = tree.FindTokenOnLeftOfPosition (completionContext.Position, cancellationToken);
if (token.IsMandatoryNamedParameterPosition ())
return Enumerable.Empty<CompletionData> ();
var result = new List<CompletionData> ();
// check if it's the first parameter and set autoselect == false if a parameterless version exists.
if (token.IsKind (SyntaxKind.OpenParenToken)) {
var parent = token.Parent?.Parent;
if (parent == null)
return Enumerable.Empty<CompletionData> ();
var symbolInfo = model.GetSymbolInfo (parent);
foreach (var symbol in new [] { symbolInfo.Symbol }.Concat (symbolInfo.CandidateSymbols)) {
if (symbol != null && symbol.IsKind (SymbolKind.Method)) {
if (symbol.GetParameters ().Length == 0) {
completionResult.AutoSelect = false;
break;
}
}
}
}
foreach (var _type in ctx.InferredTypes) {
var type = _type;
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T) {
type = type.GetTypeArguments ().FirstOrDefault ();
if (type == null)
continue;
}
if (type.TypeKind != TypeKind.Enum)
continue;
if (!type.IsEditorBrowsable ())
continue;
// Does type have any aliases?
ISymbol alias = await type.FindApplicableAlias (completionContext.Position, model, cancellationToken).ConfigureAwait (false);
var displayString = RoslynCompletionData.SafeMinimalDisplayString (type, model, completionContext.Position, SymbolDisplayFormat.CSharpErrorMessageFormat);
if (string.IsNullOrEmpty (completionResult.DefaultCompletionString)) {
completionResult.DefaultCompletionString = displayString;
completionResult.AutoCompleteEmptyMatch = true;
}
if (!IsReachable (model, type, token.Parent))
result.Add (engine.Factory.CreateSymbolCompletionData (this, type, displayString));
foreach (IFieldSymbol field in type.GetMembers ().OfType<IFieldSymbol> ()) {
if (field.DeclaredAccessibility == Accessibility.Public && (field.IsConst || field.IsStatic)) {
result.Add (engine.Factory.CreateEnumMemberCompletionData (this, alias, field));
}
}
}
return result;
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var tree = ctx.SyntaxTree;
//DeclarationModifiers modifiers;
SyntaxToken token;
var semanticModel = ctx.SemanticModel;
var enclosingSymbol = semanticModel.GetEnclosingSymbol (position, cancellationToken) as INamedTypeSymbol;
// Only inside classes and structs
if (enclosingSymbol == null || !(enclosingSymbol.TypeKind == TypeKind.Struct || enclosingSymbol.TypeKind == TypeKind.Class)) {
return Enumerable.Empty<CompletionData> ();
}
if (!IsPartialCompletionContext (tree, position, cancellationToken/*, out modifiers*/, out token)) {
if (enclosingSymbol != null && (token.IsKind (SyntaxKind.OpenBraceToken) || token.IsKind (SyntaxKind.CloseBraceToken) || token.IsKind (SyntaxKind.SemicolonToken))) {
return CreateCompletionData (engine, semanticModel, position, enclosingSymbol, token, false, cancellationToken);
}
return Enumerable.Empty<CompletionData> ();
}
return CreateCompletionData (engine, semanticModel, position, enclosingSymbol, token, true, cancellationToken);
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var semanticModel = ctx.SemanticModel;
if (ctx.TargetToken.Parent != null && ctx.TargetToken.Parent.Parent != null &&
ctx.TargetToken.Parent.Parent.IsKind(SyntaxKind.Argument)) {
SourceText text;
if (!completionContext.Document.TryGetText (out text)) {
text = await completionContext.Document.GetTextAsync ();
}
var currentChar = text [completionContext.Position - 1];
if (ctx.TargetToken.Parent == null || !ctx.TargetToken.Parent.IsKind(SyntaxKind.StringLiteralExpression) ||
ctx.TargetToken.Parent.Parent == null || !ctx.TargetToken.Parent.Parent.IsKind(SyntaxKind.Argument) ||
ctx.TargetToken.Parent.Parent.Parent == null || !ctx.TargetToken.Parent.Parent.Parent.IsKind(SyntaxKind.ArgumentList) ||
ctx.TargetToken.Parent.Parent.Parent.Parent == null || !ctx.TargetToken.Parent.Parent.Parent.Parent.IsKind(SyntaxKind.InvocationExpression)) {
return Enumerable.Empty<CompletionData> ();
}
var formatArgument = GetFormatItemNumber(document, position);
var invocationExpression = ctx.TargetToken.Parent.Parent.Parent.Parent as InvocationExpressionSyntax;
return GetFormatCompletionData(engine, semanticModel, invocationExpression, formatArgument, currentChar);
}
return Enumerable.Empty<CompletionData> ();
}
public IEnumerable<Completion> GetCompletionEntries(CompletionContext context)
{
ImageSource imageSource = GetImageSource();
if (searchResults != null)
{
foreach (var value in searchResults)
{
yield return new Completion2(value, value, null, imageSource, "iconAutomationText");
}
searchResults = null;
}
else
{
Action<CompletionEntry> action = entry =>
{
string searchTerm = context.Snapshot.GetText(context.SpanStart, context.SpanLength);
entry.UpdateDisplayText(searchTerm);
ExecuteSearch(searchTerm);
};
yield return new CompletionEntry("Search remote NuGet packages...", null, null, imageSource, commitAction: action);
}
}
public async sealed override Task ProvideCompletionsAsync(CompletionContext completionContext)
{
var document = completionContext.Document;
var position = completionContext.Position;
var cancellationToken = completionContext.CancellationToken;
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var node = GetPartialTypeSyntaxNode(tree, position, cancellationToken);
if (node != null)
{
var semanticModel = await document.GetSemanticModelForNodeAsync(node, cancellationToken).ConfigureAwait(false);
var syntaxContext = await CreateSyntaxContextAsync(document, semanticModel, position, cancellationToken).ConfigureAwait(false);
var declaredSymbol = semanticModel.GetDeclaredSymbol(node, cancellationToken) as INamedTypeSymbol;
if (declaredSymbol != null)
{
var symbols = LookupCandidateSymbols(syntaxContext, declaredSymbol, cancellationToken);
var items = symbols?.Select(s => CreateCompletionItem(s, syntaxContext));
if (items != null)
{
completionContext.AddItems(items);
}
}
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode(position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
var targetToken = tree.FindTokenOnLeftOfPosition(position, cancellationToken).GetPreviousTokenIfTouchingWord(position);
if (targetToken.IsKind(SyntaxKind.AliasKeyword) && targetToken.Parent.IsKind(SyntaxKind.ExternAliasDirective))
{
var compilation = await document.GetCSharpCompilationAsync(cancellationToken).ConfigureAwait(false);
var aliases = compilation.ExternalReferences.Where(r => r.Properties.Aliases != null).SelectMany(r => r.Properties.Aliases).ToSet();
if (aliases.Any())
{
var root = await tree.GetRootAsync(cancellationToken).ConfigureAwait(false);
var usedAliases = root.ChildNodes().OfType<ExternAliasDirectiveSyntax>().Where(e => !e.Identifier.IsMissing).Select(e => e.Identifier.ValueText);
foreach (var used in usedAliases) {
aliases.Remove (used);
}
aliases.Remove(MetadataReferenceProperties.GlobalAlias);
return aliases.Select (e => engine.Factory.CreateGenericData (this, e, GenericDataType.Undefined));
}
}
return Enumerable.Empty<CompletionData> ();
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var position = completionContext.Position;
var document = completionContext.Document;
var span = new TextSpan(position, 0);
var semanticModel = await document.GetCSharpSemanticModelForSpanAsync(span, cancellationToken).ConfigureAwait(false);
var syntaxTree = semanticModel.SyntaxTree;
// var ctx = await completionContext.GetSyntaxContextAsync (engine.Workspace, cancellationToken).ConfigureAwait (false);
if (syntaxTree.IsInNonUserCode(position, cancellationToken) ||
syntaxTree.IsPreProcessorDirectiveContext(position, cancellationToken))
{
return Enumerable.Empty<CompletionData> ();
}
if (!syntaxTree.IsRightOfDotOrArrowOrColonColon(position, cancellationToken))
{
return Enumerable.Empty<CompletionData> ();
}
var node = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken)
.GetPreviousTokenIfTouchingWord(position)
.Parent;
if (node.Kind() == SyntaxKind.ExplicitInterfaceSpecifier)
{
return await GetCompletionsOffOfExplicitInterfaceAsync(
engine, document, semanticModel, position, ((ExplicitInterfaceSpecifierSyntax)node).Name, cancellationToken).ConfigureAwait(false);
}
return Enumerable.Empty<CompletionData> ();
}
public IEnumerable<Completion> GetCompletionEntries(CompletionContext context)
{
var feeds = Paket.Dependencies.Locate().GetDefinedNuGetFeeds();
foreach (var feed in feeds)
{
yield return new Completion2(feed, feed, null, null, "iconAutomationText");
}
}
private void ExecuteSearch(CompletionContext context, string searchTerm)
{
ThreadPool.QueueUserWorkItem(state =>
{
DteHelper.ExecuteCommand("Edit.CompleteWord");
});
}
public override async Task<bool> IsExclusiveAsync (CompletionContext completionContext, SyntaxContext syntaxContext, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
// We're exclusive if this context could only be an object initializer and not also a
// collection initializer. If we're initializing something that could be initialized as
// an object or as a collection, say we're not exclusive. That way the rest of
// intellisense can be used in the collection intitializer.
//
// Consider this case:
// class c : IEnumerable<int>
// {
// public void Add(int addend) { }
// public int foo;
// }
// void foo()
// {
// var b = new c {|
// }
// There we could initialize b using either an object initializer or a collection
// initializer. Since we don't know which the user will use, we'll be non-exclusive, so
// the other providers can help the user write the collection initializer, if they want
// to.
var document = completionContext.Document;
var position = completionContext.Position;
var tree = await document.GetCSharpSyntaxTreeAsync (cancellationToken).ConfigureAwait (false);
if (tree.IsInNonUserCode (position, cancellationToken)) {
return false;
}
var token = tree.FindTokenOnLeftOfPosition (position, cancellationToken);
token = token.GetPreviousTokenIfTouchingWord (position);
if (token.Parent == null) {
return false;
}
var expression = token.Parent.Parent as ExpressionSyntax;
if (expression == null) {
return false;
}
var semanticModel = await document.GetCSharpSemanticModelForNodeAsync (expression, cancellationToken).ConfigureAwait (false);
var initializedType = semanticModel.GetTypeInfo (expression, cancellationToken).Type;
if (initializedType == null) {
return false;
}
// Non-exclusive if initializedType can be initialized as a collection.
if (initializedType.CanSupportCollectionInitializer ()) {
return false;
}
// By default, only our member names will show up.
return true;
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var workspace = document.Project.Solution.Workspace;
var semanticModel = await document.GetSemanticModelForSpanAsync(new TextSpan(position, length: 0), cancellationToken).ConfigureAwait(false);
var typeAndLocation = GetInitializedType(document, semanticModel, position, cancellationToken);
if (typeAndLocation == null)
{
return;
}
var initializedType = typeAndLocation.Item1 as INamedTypeSymbol;
var initializerLocation = typeAndLocation.Item2;
if (initializedType == null)
{
return;
}
if (await IsExclusiveAsync(document, position, cancellationToken).ConfigureAwait(false))
{
context.IsExclusive = true;
}
var enclosing = semanticModel.GetEnclosingNamedType(position, cancellationToken);
// Find the members that can be initialized. If we have a NamedTypeSymbol, also get the overridden members.
IEnumerable<ISymbol> members = semanticModel.LookupSymbols(position, initializedType);
members = members.Where(m => IsInitializable(m, enclosing) &&
m.CanBeReferencedByName &&
IsLegalFieldOrProperty(m, enclosing) &&
!m.IsImplicitlyDeclared);
// Filter out those members that have already been typed
var alreadyTypedMembers = GetInitializedMembers(semanticModel.SyntaxTree, position, cancellationToken);
var uninitializedMembers = members.Where(m => !alreadyTypedMembers.Contains(m.Name));
uninitializedMembers = uninitializedMembers.Where(m => m.IsEditorBrowsable(document.ShouldHideAdvancedMembers(), semanticModel.Compilation));
var text = await semanticModel.SyntaxTree.GetTextAsync(cancellationToken).ConfigureAwait(false);
foreach (var uninitializedMember in uninitializedMembers)
{
context.AddItem(SymbolCompletionItem.Create(
displayText: uninitializedMember.Name,
insertionText: null,
span: context.DefaultItemSpan,
symbol: uninitializedMember,
descriptionPosition: initializerLocation.SourceSpan.Start,
rules: s_rules
));
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
return await document.GetUnionResultsFromDocumentAndLinks(
UnionCompletionItemComparer.Instance,
async (doc, ct) => await GetSpeculativeTCompletions(engine, doc, position, ct).ConfigureAwait(false),
cancellationToken).ConfigureAwait(false);
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var state = await ItemGetter.CreateAsync(this, context.Document, context.Position, context.CancellationToken).ConfigureAwait(false);
var items = await state.GetItemsAsync().ConfigureAwait(false);
if (items?.Any() == true)
{
context.IsExclusive = true;
context.AddItems(items);
}
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
if (context.Options.GetOption(CompletionControllerOptions.AlwaysShowBuilder))
{
var text = await context.Document.GetTextAsync(context.CancellationToken).ConfigureAwait(false);
context.SuggestionModeItem = this.CreateEmptySuggestionModeItem(context.DefaultItemSpan);
}
else
{
context.SuggestionModeItem = await this.GetSuggestionModeItemAsync(context.Document, context.Position, context.DefaultItemSpan, context.Trigger, context.CancellationToken).ConfigureAwait(false);
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var syntaxTree = await document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
if (syntaxTree.IsInNonUserCode(position, cancellationToken) ||
syntaxTree.IsRightOfDotOrArrowOrColonColon(position, cancellationToken) ||
syntaxTree.GetContainingTypeOrEnumDeclaration(position, cancellationToken) is EnumDeclarationSyntax)
{
return Enumerable.Empty<CompletionData>();
}
// var span = new TextSpan(position, 0);
// var semanticModel = await document.GetCSharpSemanticModelForSpanAsync(span, cancellationToken).ConfigureAwait(false);
if (syntaxTree.IsPreProcessorDirectiveContext(position, cancellationToken))
{
var directive = syntaxTree.GetRoot(cancellationToken).FindTokenOnLeftOfPosition(position, includeDirectives: true).GetAncestor<DirectiveTriviaSyntax>();
if (directive.DirectiveNameToken.IsKind(
SyntaxKind.IfKeyword,
SyntaxKind.RegionKeyword,
SyntaxKind.ElseKeyword,
SyntaxKind.ElifKeyword,
SyntaxKind.ErrorKeyword,
SyntaxKind.LineKeyword,
SyntaxKind.PragmaKeyword,
SyntaxKind.EndIfKeyword,
SyntaxKind.UndefKeyword,
SyntaxKind.EndRegionKeyword,
SyntaxKind.WarningKeyword))
{
return Enumerable.Empty<CompletionData>();
}
return await GetSnippetCompletionItemsAsync(cancellationToken).ConfigureAwait(false);
}
var tokenLeftOfPosition = syntaxTree.FindTokenOnLeftOfPosition (position, cancellationToken);
if (syntaxTree.IsGlobalStatementContext(position, cancellationToken) ||
syntaxTree.IsExpressionContext(position, tokenLeftOfPosition, true, cancellationToken) ||
syntaxTree.IsStatementContext(position, tokenLeftOfPosition, cancellationToken) ||
syntaxTree.IsTypeContext(position, cancellationToken) ||
syntaxTree.IsTypeDeclarationContext(position, tokenLeftOfPosition, cancellationToken) ||
syntaxTree.IsNamespaceContext(position, cancellationToken) ||
syntaxTree.IsMemberDeclarationContext(position, tokenLeftOfPosition, cancellationToken) ||
syntaxTree.IsLabelContext(position, cancellationToken))
{
return await GetSnippetCompletionItemsAsync(cancellationToken).ConfigureAwait(false);
}
return Enumerable.Empty<CompletionData>();
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
if (!context.Options.GetOption(CompletionControllerOptions.ShowXmlDocCommentCompletion))
{
return;
}
var items = await GetItemsWorkerAsync(context.Document, context.Position, context.DefaultItemSpan, context.Trigger, context.CancellationToken).ConfigureAwait(false);
if (items != null)
{
context.AddItems(items);
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var model = ctx.SemanticModel;
var result = new List<CompletionData> ();
if (ctx.IsPreProcessorExpressionContext) {
var parseOptions = model.SyntaxTree.Options as CSharpParseOptions;
foreach (var define in parseOptions.PreprocessorSymbolNames) {
result.Add(engine.Factory.CreateGenericData (this, define, GenericDataType.PreprocessorSymbol));
}
}
return result;
}
public IEnumerable<Completion> GetCompletionEntries(CompletionContext context)
{
ImageSource imageSource = GetImageSource();
var searchResults =
Paket.Dependencies.Locate(context.Snapshot.TextBuffer.GetFileName())
.GetInstalledPackages().Select(x => x.Item1);
foreach (var value in searchResults)
{
yield return new Completion2(value, value, null, imageSource, "iconAutomationText");
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
// var ctx = await completionContext.GetSyntaxContextAsync (engine.Workspace, cancellationToken).ConfigureAwait (false);
var document = completionContext.Document;
var semanticModel = ctx.SemanticModel;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode(completionContext.Position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
var text = await document.GetTextAsync (cancellationToken).ConfigureAwait (false);
var startLineNumber = text.Lines.IndexOf (completionContext.Position);
// modifiers* override modifiers* type? |
Accessibility seenAccessibility;
//DeclarationModifiers modifiers;
var token = tree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (token.Parent == null)
return Enumerable.Empty<CompletionData> ();
var parentMember = token.Parent.AncestorsAndSelf ().OfType<MemberDeclarationSyntax> ().FirstOrDefault (m => !m.IsKind (SyntaxKind.IncompleteMember));
if (!(parentMember is BaseTypeDeclarationSyntax) &&
/* May happen in case:
*
* override $
* public override string Foo () {}
*/
!(token.IsKind (SyntaxKind.OverrideKeyword) && token.Span.Start <= parentMember.Span.Start))
return Enumerable.Empty<CompletionData> ();
var position = completionContext.Position;
var startToken = token.GetPreviousTokenIfTouchingWord(position);
ITypeSymbol returnType;
SyntaxToken tokenBeforeReturnType;
TryDetermineReturnType (startToken, semanticModel, cancellationToken, out returnType, out tokenBeforeReturnType);
if (returnType == null) {
var enclosingType = semanticModel.GetEnclosingSymbol (position, cancellationToken) as INamedTypeSymbol;
if (enclosingType != null && (startToken.IsKind (SyntaxKind.OpenBraceToken) || startToken.IsKind (SyntaxKind.CloseBraceToken) || startToken.IsKind (SyntaxKind.SemicolonToken))) {
return CreateCompletionData (engine, semanticModel, position, returnType, Accessibility.NotApplicable, startToken, tokenBeforeReturnType, false, cancellationToken);
}
}
if (!TryDetermineModifiers(ref tokenBeforeReturnType, text, startLineNumber, out seenAccessibility/*, out modifiers*/) ||
!TryCheckForTrailingTokens (tree, text, startLineNumber, position, cancellationToken)) {
return Enumerable.Empty<CompletionData> ();
}
return CreateCompletionData (engine, semanticModel, position, returnType, seenAccessibility, startToken, tokenBeforeReturnType, true, cancellationToken);
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var syntaxTree = ctx.SyntaxTree;
if (syntaxTree.IsInNonUserCode(position, cancellationToken))
{
return null;
}
var token = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken);
token = token.GetPreviousTokenIfTouchingWord(position);
if (token.Kind() != SyntaxKind.OpenParenToken && token.Kind() != SyntaxKind.CommaToken)
{
return null;
}
var attributeArgumentList = token.Parent as AttributeArgumentListSyntax;
var attributeSyntax = token.Parent.Parent as AttributeSyntax;
if (attributeSyntax == null || attributeArgumentList == null)
{
return null;
}
// 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.GetCSharpSemanticModelForNodeAsync(attributeSyntax, cancellationToken).ConfigureAwait(false);
var nameColonItems = await GetNameColonItemsAsync(engine, workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
var nameEqualsItems = await GetNameEqualsItemsAsync(engine, workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
// If we're after a name= parameter, then we only want to show name= parameters.
if (IsAfterNameEqualsArgument(token))
{
return nameEqualsItems;
}
return nameColonItems.Concat(nameEqualsItems);
}
public IEnumerable<Completion> GetCompletionEntries(CompletionContext context)
{
ImageSource imageSource = GetImageSource();
string searchTerm = context.Snapshot.GetText(context.SpanStart, context.SpanLength);
var searchResults =
FSharpAsync.RunSynchronously(
NuGetV3.FindPackages(FSharpOption<Paket.PackageSources.NugetSourceAuthentication>.None, Constants.DefaultNuGetStream, searchTerm, 20),
FSharpOption<int>.None,
FSharpOption<CancellationToken>.None);
foreach (var value in searchResults)
{
yield return new Completion2(value, value, null, imageSource, "iconAutomationText");
}
}
protected override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var semanticModel = ctx.SemanticModel;
if (info.TriggerCharacter == '\\') {
if (ctx.TargetToken.Parent != null && ctx.TargetToken.Parent.Parent != null &&
ctx.TargetToken.Parent.Parent.IsKind (SyntaxKind.Argument)) {
var argument = ctx.TargetToken.Parent.Parent as ArgumentSyntax;
var symbolInfo = semanticModel.GetSymbolInfo (ctx.TargetToken.Parent.Parent.Parent.Parent);
if (symbolInfo.Symbol == null)
return TaskUtil.EmptyEnumerable<CompletionData> ();
if (SemanticHighlightingVisitor<int>.IsRegexMatchMethod (symbolInfo)) {
if (((ArgumentListSyntax)argument.Parent).Arguments [1] != argument)
return TaskUtil.EmptyEnumerable<CompletionData> ();
completionResult.AutoSelect = false;
return Task.FromResult (GetFormatCompletionData (engine, argument.Expression.ToString () [0] == '@'));
}
if (SemanticHighlightingVisitor<int>.IsRegexConstructor (symbolInfo)) {
if (((ArgumentListSyntax)argument.Parent).Arguments [0] != argument)
return TaskUtil.EmptyEnumerable<CompletionData> ();
completionResult.AutoSelect = false;
return Task.FromResult (GetFormatCompletionData (engine, argument.Expression.ToString () [0] == '@'));
}
}
} else {
var ma = ctx.TargetToken.Parent as MemberAccessExpressionSyntax;
if (ma != null) {
var symbolInfo = semanticModel.GetSymbolInfo (ma.Expression);
var typeInfo = semanticModel.GetTypeInfo (ma.Expression);
var type = typeInfo.Type;
if (type != null && type.Name == "Match" && type.ContainingNamespace.GetFullName () == "System.Text.RegularExpressions" ) {
var items = new List<CompletionData>();
foreach (var grp in GetGroups (ctx, symbolInfo.Symbol)) {
items.Add (engine.Factory.CreateGenericData (this, "Groups[\"" + grp + "\"]", GenericDataType.Undefined));
}
return Task.FromResult ((IEnumerable<CompletionData>)items);
}
}
}
return TaskUtil.EmptyEnumerable<CompletionData> ();
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult result, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var list = new List<CompletionData> ();
var newExpression = GetObjectCreationNewExpression (ctx.SyntaxTree, completionContext.Position, cancellationToken);
if (newExpression == null) {
if (ctx.SyntaxTree.IsInNonUserCode(completionContext.Position, cancellationToken) ||
ctx.SyntaxTree.IsPreProcessorDirectiveContext(completionContext.Position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
// if (!nkr.IsValid (completionContext.Position, ctx.CSharpSyntaxContext, cancellationToken))
// return Enumerable.Empty<ICompletionData> ();
var tokenOnLeftOfPosition = ctx.SyntaxTree.FindTokenOnLeftOfPosition (completionContext.Position, cancellationToken);
if (!tokenOnLeftOfPosition.IsKind (SyntaxKind.EqualsToken) && !tokenOnLeftOfPosition.Parent.IsKind (SyntaxKind.EqualsValueClause))
return Enumerable.Empty<CompletionData> ();
foreach (var inferredType in SyntaxContext.InferenceService.InferTypes (ctx.CSharpSyntaxContext.SemanticModel, completionContext.Position, cancellationToken)) {
if (inferredType.IsEnumType () || inferredType.IsInterfaceType () || inferredType.IsAbstract)
continue;
foreach (var symbol in await GetPreselectedSymbolsWorker(ctx.CSharpSyntaxContext, inferredType, completionContext.Position - 1, cancellationToken)) {
var symbolCompletionData = engine.Factory.CreateObjectCreation (this, inferredType, symbol, completionContext.Position, false);
list.Add (symbolCompletionData);
}
}
return list;
}
var type = SyntaxContext.InferenceService.InferType (ctx.CSharpSyntaxContext.SemanticModel, newExpression, objectAsDefault: false, cancellationToken: cancellationToken);
foreach (var symbol in await GetPreselectedSymbolsWorker(ctx.CSharpSyntaxContext, type, completionContext.Position, cancellationToken)) {
var symbolCompletionData = engine.Factory.CreateObjectCreation (this, type, symbol, newExpression.SpanStart, true);
list.Add (symbolCompletionData);
if (string.IsNullOrEmpty (result.DefaultCompletionString))
result.DefaultCompletionString = symbolCompletionData.DisplayText;
}
foreach (var keyword in primitiveTypesKeywords) {
list.Add (engine.Factory.CreateGenericData (this, keyword, GenericDataType.Keyword));
}
return list;
}
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);
if (!IsPartialMethodCompletionContext(tree, position, cancellationToken, out var modifiers, out var token))
{
return;
}
var items = await CreatePartialItemsAsync(
document, position, context.CompletionListSpan, modifiers, token, cancellationToken).ConfigureAwait(false);
if (items?.Any() == true)
{
context.IsExclusive = true;
context.AddItems(items);
}
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var position = completionContext.Position;
var document = completionContext.Document;
var syntaxTree = ctx.SyntaxTree;
if (syntaxTree.IsInNonUserCode(position, cancellationToken) ||
syntaxTree.IsPreProcessorDirectiveContext(position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
if (!syntaxTree.IsRightOfDotOrArrowOrColonColon(position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
var ma = ctx.LeftToken.Parent as MemberAccessExpressionSyntax;
if (ma == null)
return Enumerable.Empty<CompletionData> ();
var model = ctx.CSharpSyntaxContext.SemanticModel;
var symbolInfo = model.GetSymbolInfo (ma.Expression);
if (symbolInfo.Symbol == null)
return Enumerable.Empty<CompletionData> ();
var list = new List<CompletionData> ();
var within = model.GetEnclosingNamedTypeOrAssembly(position, cancellationToken);
var addedSymbols = new HashSet<string> ();
foreach (var ifStmSyntax in ma.Expression.AncestorsAndSelf ().OfType<IfStatementSyntax> ()) {
var condition = ifStmSyntax.Condition.SkipParens ();
if (condition == null || !condition.IsKind (SyntaxKind.IsExpression))
continue;
var isExpr = ((BinaryExpressionSyntax)condition);
var leftSymbol = model.GetSymbolInfo (isExpr.Left);
if (leftSymbol.Symbol == symbolInfo.Symbol) {
var type = model.GetTypeInfo (isExpr.Right).Type;
if (type != null) {
Analyze (engine, ma.Expression, type, within, list, addedSymbols, cancellationToken);
}
}
}
return list;
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var model = ctx.SemanticModel;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode(completionContext.Position, cancellationToken))
return Enumerable.Empty<CompletionData> ();
var token = tree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (token.IsMandatoryNamedParameterPosition())
return Enumerable.Empty<CompletionData> ();
var result = new List<CompletionData> ();
foreach (var _type in ctx.InferredTypes) {
var type = _type;
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T) {
type = type.GetTypeArguments().FirstOrDefault();
if (type == null)
continue;
}
if (type.TypeKind != TypeKind.Enum)
continue;
if (!type.IsEditorBrowsable ())
continue;
// Does type have any aliases?
ISymbol alias = await type.FindApplicableAlias(completionContext.Position, model, cancellationToken).ConfigureAwait(false);
if (string.IsNullOrEmpty(completionResult.DefaultCompletionString))
completionResult.DefaultCompletionString = type.Name;
result.Add (engine.Factory.CreateSymbolCompletionData(this, type, RoslynCompletionData.SafeMinimalDisplayString (type, model, completionContext.Position, SymbolDisplayFormat.CSharpErrorMessageFormat)));
foreach (IFieldSymbol field in type.GetMembers().OfType<IFieldSymbol>()) {
if (field.DeclaredAccessibility == Accessibility.Public && (field.IsConst || field.IsStatic)) {
result.Add (engine.Factory.CreateEnumMemberCompletionData(this, alias, field));
}
}
}
return result;
}
public override void Complete(CompletionContext context)
{
if (declarationBegin > context.StartOffset)
{
base.Complete(context);
return;
}
TypeSystemAstBuilder b = new TypeSystemAstBuilder(contextAtCaret);
b.ShowTypeParameterConstraints = false;
b.GenerateBody = true;
var entityDeclaration = b.ConvertEntity(this.Entity);
entityDeclaration.Modifiers &= ~(Modifiers.Virt | Modifiers.Abstract);
entityDeclaration.Modifiers |= Modifiers.Override;
var body = entityDeclaration.GetChildByRole(Roles.Body);
Statement baseCallStatement = body.Children.OfType <Statement>().FirstOrDefault();
if (!this.Entity.IsAbstract)
{
// modify body to call the base method
if (this.Entity.SymbolKind == SymbolKind.Method)
{
var baseCall = new BaseReferenceExpression().Invoke(this.Entity.Name, new Expression[] { });
if (((IMethod)this.Entity).ReturnType.IsKnownType(KnownTypeCode.Void))
{
baseCallStatement = new ExpressionStatement(baseCall);
}
else
{
baseCallStatement = new ReturnStatement(baseCall);
}
// Clear body of inserted method
entityDeclaration.GetChildByRole(Roles.Body).Statements.Clear();
}
}
var document = context.Editor.Document;
StringWriter w = new StringWriter();
var formattingOptions = AlFormattingPolicies.Instance.GetProjectOptions(contextAtCaret.Compilation.GetProject());
var segmentDict = SegmentTrackingOutputFormatter.WriteNode(
w, entityDeclaration, formattingOptions.OptionsContainer.GetEffectiveOptions(), context.Editor.Options);
using (document.OpenUndoGroup()) {
InsertionContext insertionContext = new InsertionContext(context.Editor.GetService(typeof(TextArea)) as TextArea, declarationBegin);
insertionContext.InsertionPosition = context.Editor.Caret.Offset;
string newText = w.ToString().TrimEnd();
document.Replace(declarationBegin, context.EndOffset - declarationBegin, newText);
var throwStatement = entityDeclaration.Descendants.FirstOrDefault(n => n is ThrowStatement);
if (throwStatement != null)
{
var segment = segmentDict[throwStatement];
context.Editor.Select(declarationBegin + segment.Offset, segment.Length);
}
AlFormatterHelper.Format(context.Editor, declarationBegin, newText.Length, formattingOptions.OptionsContainer);
var refactoringContext = SDRefactoringContext.Create(context.Editor, CancellationToken.None);
var typeResolveContext = refactoringContext.GetTypeResolveContext();
if (typeResolveContext == null)
{
return;
}
var resolvedCurrent = typeResolveContext.CurrentTypeDefinition;
IEditorUIService uiService = context.Editor.GetService(typeof(IEditorUIService)) as IEditorUIService;
ITextAnchor endAnchor = context.Editor.Document.CreateAnchor(context.Editor.Caret.Offset);
endAnchor.MovementType = AnchorMovementType.AfterInsertion;
ITextAnchor startAnchor = context.Editor.Document.CreateAnchor(context.Editor.Caret.Offset);
startAnchor.MovementType = AnchorMovementType.BeforeInsertion;
ITextAnchor insertionPos = context.Editor.Document.CreateAnchor(endAnchor.Offset);
insertionPos.MovementType = AnchorMovementType.BeforeInsertion;
var current = typeResolveContext.CurrentTypeDefinition;
AbstractInlineRefactorDialog dialog = new OverrideEqualsGetHashCodeMethodsDialog(insertionContext, context.Editor, endAnchor, insertionPos, current, Entity as IMethod, baseCallStatement);
dialog.Element = uiService.CreateInlineUIElement(insertionPos, dialog);
insertionContext.RegisterActiveElement(new InlineRefactorSnippetElement(cxt => null, ""), dialog);
insertionContext.RaiseInsertionCompleted(EventArgs.Empty);
}
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
try
{
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.IsInNonUserCode(position, cancellationToken))
{
return;
}
var token = tree.FindTokenOnLeftOfPosition(position, cancellationToken)
.GetPreviousTokenIfTouchingWord(position);
if (token.IsMandatoryNamedParameterPosition())
{
return;
}
// Don't show up within member access
// This previously worked because the type inferrer didn't work
// in member access expressions.
// The regular SymbolCompletionProvider will handle completion after .
if (token.IsKind(SyntaxKind.DotToken))
{
return;
}
var typeInferenceService = document.GetLanguageService <ITypeInferenceService>();
Contract.ThrowIfNull(typeInferenceService, nameof(typeInferenceService));
var span = new TextSpan(position, 0);
var semanticModel = await document.GetSemanticModelForSpanAsync(span, cancellationToken).ConfigureAwait(false);
var type = typeInferenceService.InferType(semanticModel, position,
objectAsDefault: true,
cancellationToken: cancellationToken);
// If we have a Nullable<T>, unwrap it.
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T)
{
type = type.GetTypeArguments().FirstOrDefault();
if (type == null)
{
return;
}
}
if (type.TypeKind != TypeKind.Enum)
{
type = TryGetEnumTypeInEnumInitializer(semanticModel, token, type, cancellationToken) ??
TryGetCompletionListType(type, semanticModel.GetEnclosingNamedType(position, cancellationToken), semanticModel.Compilation);
if (type == null)
{
return;
}
}
if (!type.IsEditorBrowsable(options.GetOption(CompletionOptions.HideAdvancedMembers, semanticModel.Language), semanticModel.Compilation))
{
return;
}
// Does type have any aliases?
var alias = await type.FindApplicableAlias(position, semanticModel, cancellationToken).ConfigureAwait(false);
var displayService = document.GetLanguageService <ISymbolDisplayService>();
var displayText = alias != null
? alias.Name
: displayService.ToMinimalDisplayString(semanticModel, position, type);
var workspace = document.Project.Solution.Workspace;
var text = await semanticModel.SyntaxTree.GetTextAsync(cancellationToken).ConfigureAwait(false);
var item = SymbolCompletionItem.CreateWithSymbolId(
displayText: displayText,
symbols: ImmutableArray.Create(alias ?? type),
rules: s_rules.WithMatchPriority(MatchPriority.Preselect),
contextPosition: position);
context.AddItem(item);
}
catch (Exception e) when(FatalError.ReportUnlessCanceled(e))
{
throw ExceptionUtilities.Unreachable;
}
}
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
if (info.IsDebugger)
{
return(null);
}
if (info.CompletionTriggerReason == CompletionTriggerReason.BackspaceOrDeleteCommand)
{
return(null);
}
var document = completionContext.Document;
var position = completionContext.Position;
var tree = await document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = tree.FindTokenOnLeftOfPosition(position, cancellationToken);
var parentTrivia = token.GetAncestor <DocumentationCommentTriviaSyntax>();
if (parentTrivia == null)
{
return(null);
}
var items = new List <CompletionData>();
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var span = GetTextChangeSpan(text, position);
var attachedToken = parentTrivia.ParentTrivia.Token;
if (attachedToken.Kind() == SyntaxKind.None)
{
return(null);
}
var semanticModel = await document.GetCSharpSemanticModelForNodeAsync(attachedToken.Parent, cancellationToken).ConfigureAwait(false);
ISymbol declaredSymbol = null;
var memberDeclaration = attachedToken.GetAncestor <MemberDeclarationSyntax>();
if (memberDeclaration != null)
{
declaredSymbol = semanticModel.GetDeclaredSymbol(memberDeclaration, cancellationToken);
}
else
{
var typeDeclaration = attachedToken.GetAncestor <TypeDeclarationSyntax>();
if (typeDeclaration != null)
{
declaredSymbol = semanticModel.GetDeclaredSymbol(typeDeclaration, cancellationToken);
}
}
if (declaredSymbol != null)
{
items.AddRange(GetTagsForSymbol(engine, declaredSymbol, span, parentTrivia, token));
}
if (token.Parent.Kind() == SyntaxKind.XmlEmptyElement || token.Parent.Kind() == SyntaxKind.XmlText ||
(token.Parent.IsKind(SyntaxKind.XmlElementEndTag) && token.IsKind(SyntaxKind.GreaterThanToken)) ||
(token.Parent.IsKind(SyntaxKind.XmlName) && token.Parent.IsParentKind(SyntaxKind.XmlEmptyElement)))
{
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement)
{
items.AddRange(GetNestedTags(engine, span));
}
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement && ((XmlElementSyntax)token.Parent.Parent).StartTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(engine, span));
}
if (token.Parent.IsParentKind(SyntaxKind.XmlEmptyElement) & token.Parent.Parent.IsParentKind(SyntaxKind.XmlElement))
{
var element = (XmlElementSyntax)token.Parent.Parent.Parent;
if (element.StartTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(engine, span));
}
}
if (token.Parent.Parent.Kind() == SyntaxKind.XmlElement && ((XmlElementSyntax)token.Parent.Parent).StartTag.Name.LocalName.ValueText == "listheader")
{
items.AddRange(GetListHeaderItems(engine, span));
}
if (token.Parent.Parent is DocumentationCommentTriviaSyntax)
{
items.AddRange(GetTopLevelSingleUseNames(engine, parentTrivia, span));
items.AddRange(GetTopLevelRepeatableItems(engine, span));
}
}
if (token.Parent.Kind() == SyntaxKind.XmlElementStartTag)
{
var startTag = (XmlElementStartTagSyntax)token.Parent;
if (token == startTag.GreaterThanToken && startTag.Name.LocalName.ValueText == "list")
{
items.AddRange(GetListItems(engine, span));
}
if (token == startTag.GreaterThanToken && startTag.Name.LocalName.ValueText == "listheader")
{
items.AddRange(GetListHeaderItems(engine, span));
}
}
items.AddRange(GetAlwaysVisibleItems(engine, span));
return(items);
}
private async Task AddCompletionItemsAsync(CompletionContext completionContext, SyntaxContext syntaxContext, TelemetryCounter telemetryCounter, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var project = document.Project;
var workspace = project.Solution.Workspace;
var typeImportCompletionService = document.GetLanguageService <ITypeImportCompletionService>();
// Find all namespaces in scope at current cursor location,
// which will be used to filter so the provider only returns out-of-scope types.
var namespacesInScope = GetNamespacesInScope(document, syntaxContext, cancellationToken);
// Get completion items from current project.
var compilation = await project.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
await typeImportCompletionService.GetTopLevelTypesAsync(project, syntaxContext, HandlePublicAndInternalItem, cancellationToken)
.ConfigureAwait(false);
// Get declarations from directly referenced projects and PEs
var referencedAssemblySymbols = compilation.GetReferencedAssemblySymbols();
foreach (var assembly in referencedAssemblySymbols)
{
cancellationToken.ThrowIfCancellationRequested();
// Skip reference with only non-global alias.
var metadataReference = compilation.GetMetadataReference(assembly);
if (metadataReference.Properties.Aliases.IsEmpty ||
metadataReference.Properties.Aliases.Any(alias => alias == MetadataReferenceProperties.GlobalAlias))
{
var assemblyProject = project.Solution.GetProject(assembly, cancellationToken);
if (assemblyProject != null && assemblyProject.SupportsCompilation)
{
await typeImportCompletionService.GetTopLevelTypesAsync(
assemblyProject,
syntaxContext,
GetHandler(compilation.Assembly, assembly),
cancellationToken).ConfigureAwait(false);
}
else if (metadataReference is PortableExecutableReference peReference)
{
typeImportCompletionService.GetTopLevelTypesFromPEReference(
project.Solution,
compilation,
peReference,
syntaxContext,
GetHandler(compilation.Assembly, assembly),
cancellationToken);
}
}
}
telemetryCounter.ReferenceCount = referencedAssemblySymbols.Length;
return;
// Decide which item handler to use based on IVT
Action <CompletionItem, bool> GetHandler(IAssemblySymbol assembly, IAssemblySymbol referencedAssembly)
=> assembly.IsSameAssemblyOrHasFriendAccessTo(referencedAssembly)
? (Action <CompletionItem, bool>)HandlePublicAndInternalItem
: HandlePublicItem;
// Add only public types to completion list
void HandlePublicItem(CompletionItem item, bool isPublic)
=> AddItems(item, isPublic, isInternalsVisible: false, completionContext, namespacesInScope, telemetryCounter);
// Add both public and internal types to completion list
void HandlePublicAndInternalItem(CompletionItem item, bool isPublic)
=> AddItems(item, isPublic, isInternalsVisible: true, completionContext, namespacesInScope, telemetryCounter);
private static void GetGlobalCompletions(SemanticModel semanticModel, SourceLocation position, CompletionContext context)
{
var symbols = semanticModel.LookupSymbols(position)
.Where(x => !(x is SemanticSymbol))
.Where(x => !(x is AttributeSymbol))
.Where(x => x.Locations.Length == 0 || x.Locations.Any(l => l.End < position));
if (!((SyntaxTree)semanticModel.SyntaxTree).PossiblyInTypeName(position))
{
symbols = symbols.Where(x => !(x is TypeSymbol));
}
CreateSymbolCompletions(symbols.Cast <Symbol>(), context);
}
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var model = ctx.SemanticModel;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode(completionContext.Position, cancellationToken))
{
return(Enumerable.Empty <CompletionData> ());
}
var token = tree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (token.IsKind(SyntaxKind.DotToken) || token.IsMandatoryNamedParameterPosition())
{
return(Enumerable.Empty <CompletionData> ());
}
var result = new List <CompletionData> ();
// check if it's the first parameter and set autoselect == false if a parameterless version exists.
if (token.IsKind(SyntaxKind.OpenParenToken))
{
var parent = token.Parent?.Parent;
if (parent == null)
{
return(Enumerable.Empty <CompletionData> ());
}
var symbolInfo = model.GetSymbolInfo(parent);
foreach (var symbol in new [] { symbolInfo.Symbol }.Concat(symbolInfo.CandidateSymbols))
{
if (symbol != null && symbol.IsKind(SymbolKind.Method))
{
if (symbol.GetParameters().Length == 0)
{
completionResult.AutoSelect = false;
break;
}
}
}
}
foreach (var _type in ctx.InferredTypes)
{
var type = _type;
if (type.OriginalDefinition.SpecialType == SpecialType.System_Nullable_T)
{
type = type.GetTypeArguments().FirstOrDefault();
if (type == null)
{
continue;
}
}
if (type.TypeKind != TypeKind.Enum)
{
continue;
}
if (!type.IsEditorBrowsable())
{
continue;
}
// Does type have any aliases?
ISymbol alias = await type.FindApplicableAlias(completionContext.Position, model, cancellationToken).ConfigureAwait(false);
var displayString = RoslynCompletionData.SafeMinimalDisplayString(type, model, completionContext.Position, SymbolDisplayFormat.CSharpErrorMessageFormat);
if (string.IsNullOrEmpty(completionResult.DefaultCompletionString))
{
completionResult.DefaultCompletionString = displayString;
completionResult.AutoCompleteEmptyMatch = true;
}
if (!IsReachable(model, type, token.Parent))
{
result.Add(engine.Factory.CreateSymbolCompletionData(this, type, displayString));
}
foreach (IFieldSymbol field in type.GetMembers().OfType <IFieldSymbol> ())
{
if (field.DeclaredAccessibility == Accessibility.Public && (field.IsConst || field.IsStatic))
{
result.Add(engine.Factory.CreateEnumMemberCompletionData(this, alias, field));
}
}
}
return(result);
}
void AddDelegateHandlers(CompletionContext context, SyntaxNode parent, SemanticModel semanticModel, ITypeSymbol delegateType, int position, string optDelegateName, CancellationToken cancellationToken)
{
var delegateMethod = delegateType.GetDelegateInvokeMethod();
string EolMarker = "\n";
bool addSemicolon = true;
bool addDefault = true;
string delegateEndString = EolMarker + thisLineIndentMarker + "}" + (addSemicolon ? ";" : "");
CompletionItem item;
if (addDefault)
{
item = CreateCompletionItem(
"delegate",
"Creates anonymous delegate.",
"delegate {" + EolMarker + thisLineIndentMarker + eolMarker,
delegateEndString,
position
);
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item);
}
//if (LanguageVersion.Major >= 5)
item = CreateCompletionItem(
"async delegate",
"Creates anonymous async delegate.",
"async delegate {" + EolMarker + thisLineIndentMarker + eolMarker,
delegateEndString,
position
);
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item);
}
}
var sb = StringBuilderCache.Allocate("(");
var sbWithoutTypes = StringBuilderCache.Allocate("(");
for (int k = 0; k < delegateMethod.Parameters.Length; k++)
{
if (k > 0)
{
sb.Append(", ");
sbWithoutTypes.Append(", ");
}
sb.Append(CSharpAmbience.SafeMinimalDisplayString(delegateMethod.Parameters [k], semanticModel, position, overrideNameFormat));
sbWithoutTypes.Append(delegateMethod.Parameters [k].Name);
}
sb.Append(")");
sbWithoutTypes.Append(")");
var signature = StringBuilderCache.ReturnAndFree(sb)
.Replace(", params ", ", ")
.Replace("(params ", "(");
if (context.Items.All(data => data.DisplayText != signature))
{
item = CreateCompletionItem(
signature + " =>",
"Creates typed lambda expression.",
signature + " => ",
(addSemicolon ? ";" : ""),
position
);
//item.CompletionCategory = category;
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item);
}
// if (LanguageVersion.Major >= 5) {
item = CreateCompletionItem(
"async " + signature + " =>",
"Creates typed async lambda expression.",
"async " + signature + " => ",
(addSemicolon ? ";" : ""),
position
);
//item.CompletionCategory = category;
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item);
}
var signatureWithoutTypes = sbWithoutTypes.ToString();
if (!delegateMethod.Parameters.Any(p => p.RefKind != RefKind.None) && context.Items.All(data => data.DisplayText != signatureWithoutTypes))
{
item = CreateCompletionItem(
signatureWithoutTypes + " =>",
"Creates typed lambda expression.",
signatureWithoutTypes + " => ",
(addSemicolon ? ";" : ""),
position
);
//item.CompletionCategory = category;
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item.WithRules(item.Rules.WithMatchPriority(int.MaxValue)));
}
//if (LanguageVersion.Major >= 5) {
item = CreateCompletionItem(
"async " + signatureWithoutTypes + " =>",
"Creates typed async lambda expression.",
"async " + signatureWithoutTypes + " => ",
(addSemicolon ? ";" : ""),
position
);
//item.CompletionCategory = category;
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item);
}
//}
}
}
StringBuilderCache.Free(sbWithoutTypes);
item = CreateNewMethodCreationItem(parent, semanticModel, delegateType, position, optDelegateName, delegateMethod, cancellationToken);
// item.CompletionCategory = category;
if (!context.Items.Any(i => i.DisplayText == item.DisplayText))
{
context.AddItem(item.WithRules(item.Rules.WithMatchPriority(int.MaxValue)));
}
}
public async Task <CompletionResult> GetCompletionDataAsync(CompletionContext completionContext, CompletionTriggerInfo info, CancellationToken cancellationToken = default(CancellationToken))
{
if (completionContext == null)
{
throw new ArgumentNullException("completionContext");
}
var document = completionContext.Document;
var semanticModel = await completionContext.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var position = completionContext.Position;
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var ctx = await completionContext.GetSyntaxContextAsync(workspace, cancellationToken);
ctx.SemanticModel = semanticModel;
// case lambda parameter (n1, $
if (ctx.TargetToken.IsKind(SyntaxKind.CommaToken) &&
ctx.TargetToken.Parent != null && ctx.TargetToken.Parent.Parent != null &&
ctx.TargetToken.Parent.Parent.IsKind(SyntaxKind.ParenthesizedLambdaExpression))
{
return(CompletionResult.Empty);
}
var result = new CompletionResult {
SyntaxContext = ctx
};
if (position > 0)
{
var nonExclusiveHandlers = new List <CompletionContextHandler> ();
var exclusiveHandlers = new List <CompletionContextHandler> ();
var toRetriggerHandlers = new List <CompletionContextHandler> ();
IEnumerable <CompletionContextHandler> handlerList;
if (completionContext.UseDefaultContextHandlers)
{
handlerList = handlers.Concat(completionContext.AdditionalContextHandlers);
}
else
{
handlerList = completionContext.AdditionalContextHandlers;
}
foreach (var handler in handlerList)
{
if (info.CompletionTriggerReason == CompletionTriggerReason.CompletionCommand || info.CompletionTriggerReason == CompletionTriggerReason.BackspaceOrDeleteCommand || handler.IsTriggerCharacter(text, position - 1))
{
if (await handler.IsExclusiveAsync(completionContext, ctx, info, cancellationToken))
{
exclusiveHandlers.Add(handler);
}
else
{
nonExclusiveHandlers.Add(handler);
}
}
else
{
toRetriggerHandlers.Add(handler);
}
}
foreach (var handler in exclusiveHandlers)
{
var handlerResult = await handler.GetCompletionDataAsync(result, this, completionContext, info, ctx, cancellationToken);
//if (handlerResult != null) {
// Console.WriteLine ("-----" + handler);
// foreach (var item in handlerResult) {
// Console.WriteLine (item.DisplayText);
// }
//} else {
// Console.WriteLine ("-----" + handler + " == NULL");
//}
if (handlerResult != null)
{
result.AddRange(handlerResult);
}
}
if (result.Count == 0)
{
foreach (var handler in nonExclusiveHandlers)
{
var handlerResult = await handler.GetCompletionDataAsync(result, this, completionContext, info, ctx, cancellationToken);
//if (handlerResult != null) {
// Console.WriteLine ("-----" + handler);
// foreach (var item in handlerResult) {
// Console.WriteLine (item.DisplayText);
// }
//} else {
// Console.WriteLine ("-----" + handler + " == NULL");
//}
if (handlerResult != null && handlerResult.Any())
{
result.AddRange(handlerResult);
}
else
{
toRetriggerHandlers.Add(handler);
}
}
if (result.Count > 0)
{
info = info.WithCompletionTriggerReason(CompletionTriggerReason.RetriggerCommand);
foreach (var handler in toRetriggerHandlers)
{
var handlerResult = await handler.GetCompletionDataAsync(result, this, completionContext, info, ctx, cancellationToken);
if (handlerResult != null)
{
result.AddRange(handlerResult);
}
}
}
}
}
// prevent auto selection for "<number>." case
if (ctx.TargetToken.IsKind(SyntaxKind.DotToken))
{
var accessExpr = ctx.TargetToken.Parent as MemberAccessExpressionSyntax;
if (accessExpr != null &&
accessExpr.Expression != null &&
accessExpr.Expression.IsKind(SyntaxKind.NumericLiteralExpression))
{
result.AutoSelect = false;
}
}
if (ctx.LeftToken.Parent != null &&
ctx.LeftToken.Parent.Parent != null &&
ctx.TargetToken.Parent != null && !ctx.TargetToken.Parent.IsKind(SyntaxKind.NameEquals) &&
ctx.LeftToken.Parent.Parent.IsKind(SyntaxKind.AnonymousObjectMemberDeclarator))
{
result.AutoSelect = false;
}
if (ctx.TargetToken.IsKind(SyntaxKind.OpenParenToken) && ctx.TargetToken.GetPreviousToken().IsKind(SyntaxKind.OpenParenToken))
{
var validTypes = TypeGuessing.GetValidTypes(semanticModel, ctx.TargetToken.Parent, cancellationToken);
result.AutoSelect = !validTypes.Any(t => t.IsDelegateType());
}
foreach (var type in ctx.InferredTypes)
{
if (type.TypeKind == TypeKind.Delegate)
{
result.AutoSelect = false;
break;
}
}
if (ctx.CSharpSyntaxContext.IsPossibleTupleContext)
{
result.AutoSelect = false;
}
return(result);
}
public CompletionList Completion(TextDocumentIdentifier textDocument, Position position, CompletionContext context)
{
return(new CompletionList(PredefinedCompletionItems));
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var syntaxRoot = await context.Document.GetSyntaxRootAsync(context.CancellationToken);
if (syntaxRoot == null)
{
return;
}
var semanticModel = await context.Document.GetSemanticModelAsync(context.CancellationToken);
var node = syntaxRoot.FindNode(context.CompletionListSpan);
var argumentSyntaxNode = node.AncestorsAndSelf().OfType <ArgumentSyntax>().FirstOrDefault();
if (argumentSyntaxNode == null)
{
return;
}
var lambdaExpression = argumentSyntaxNode.Ancestors().OfType <LambdaExpressionSyntax>().FirstOrDefault();
if (lambdaExpression == null)
{
return;
}
var mockMethod = lambdaExpression.Ancestors().FirstOrDefault(x => semanticModel.GetSymbolInfo(x, context.CancellationToken).CandidateSymbols.Any(s => s.ContainingType.Name == "Mock" && s.ContainingAssembly.Name == "Moq"));
if (mockMethod == null)
{
return;
}
var typingMethod = argumentSyntaxNode.Ancestors().OfType <InvocationExpressionSyntax>().First();
var calingMethod = semanticModel.GetSymbolInfo(typingMethod, context.CancellationToken);
if (!(calingMethod.CandidateSymbols[0] is IMethodSymbol callingMethodSymbol))
{
return;
}
var index = argumentSyntaxNode.Parent.ChildNodes().ToList().FindIndex(x => x.Equals(argumentSyntaxNode));
if (index < callingMethodSymbol.Parameters.Length)
{
context.AddItem(CompletionItem.Create(GetCompletionDisplayText(callingMethodSymbol.Parameters[index].Type),
null, null,
ImmutableDictionary.Create <string, string>(),
ImmutableArray.Create(WellKnownTags.Method),
CompletionItemRules.Create(formatOnCommit: true, matchPriority: MatchPriority.Preselect)));
}
if (index == 0)
{
context.AddItem(CompletionItem.Create(String.Join(", ", callingMethodSymbol.Parameters.Select(x => GetCompletionDisplayText(x.Type))),
null, null,
ImmutableDictionary.Create <string, string>(),
ImmutableArray.Create(WellKnownTags.Method),
CompletionItemRules.Create(formatOnCommit: true)));
}
}
internal override IEnumerable <PSTypeName> GetInferredType(CompletionContext context)
{
return(Ast.EmptyPSTypeNameArray);
}
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult result, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var list = new List <CompletionData> ();
var newExpression = GetObjectCreationNewExpression(ctx.SyntaxTree, completionContext.Position, cancellationToken);
if (newExpression == null)
{
if (ctx.SyntaxTree.IsInNonUserCode(completionContext.Position, cancellationToken) ||
ctx.SyntaxTree.IsPreProcessorDirectiveContext(completionContext.Position, cancellationToken))
{
return(Enumerable.Empty <CompletionData> ());
}
// if (!nkr.IsValid (completionContext.Position, ctx.CSharpSyntaxContext, cancellationToken))
// return Enumerable.Empty<ICompletionData> ();
var tokenOnLeftOfPosition = ctx.SyntaxTree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (!tokenOnLeftOfPosition.IsKind(SyntaxKind.EqualsToken) && !tokenOnLeftOfPosition.Parent.IsKind(SyntaxKind.EqualsValueClause))
{
return(Enumerable.Empty <CompletionData> ());
}
foreach (var inferredType in SyntaxContext.InferenceService.InferTypes(ctx.CSharpSyntaxContext.SemanticModel, completionContext.Position, cancellationToken))
{
if (inferredType.IsEnumType() || inferredType.IsInterfaceType() || inferredType.IsAbstract)
{
continue;
}
foreach (var symbol in await GetPreselectedSymbolsWorker(ctx.CSharpSyntaxContext, inferredType, completionContext.Position - 1, cancellationToken))
{
var symbolCompletionData = engine.Factory.CreateObjectCreation(this, inferredType, symbol, completionContext.Position, false);
list.Add(symbolCompletionData);
}
}
return(list);
}
var expr = newExpression;
var assignmentParent = expr.Parent as AssignmentExpressionSyntax;
// HACK: Work around for a little bug in InferTypes see #41388 - may be obsolete in future roslyn versions. (after 1.2)
bool skipInference = false;
if (assignmentParent?.Left == expr)
{
skipInference = true;
}
if (!skipInference)
{
var type = SyntaxContext.InferenceService.InferType(ctx.CSharpSyntaxContext.SemanticModel, expr, objectAsDefault: false, cancellationToken: cancellationToken);
foreach (var symbol in await GetPreselectedSymbolsWorker(ctx.CSharpSyntaxContext, type, completionContext.Position, cancellationToken))
{
var symbolCompletionData = engine.Factory.CreateObjectCreation(this, type, symbol, newExpression.SpanStart, true);
list.Add(symbolCompletionData);
if (string.IsNullOrEmpty(result.DefaultCompletionString))
{
result.DefaultCompletionString = symbolCompletionData.DisplayText;
result.AutoCompleteEmptyMatch = true;
}
}
}
for (int i = 0; i < primitiveTypesKeywords.Length; i++)
{
var keyword = primitiveTypesKeywords [i];
list.Add(engine.Factory.CreateKeywordCompletion(this, keyword));
}
return(list);
}
private static void GetTypeCompletions(SemanticModel semanticModel, SourceLocation position, CompletionContext context)
{
var symbols = semanticModel.LookupSymbols(position).OfType <TypeSymbol>();
CreateSymbolCompletions(symbols, context);
}
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var syntaxTree = ctx.SyntaxTree;
if (syntaxTree.IsInNonUserCode(position, cancellationToken))
{
return(null);
}
var token = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken);
token = token.GetPreviousTokenIfTouchingWord(position);
if (token.Kind() != SyntaxKind.OpenParenToken && token.Kind() != SyntaxKind.CommaToken)
{
return(null);
}
var attributeArgumentList = token.Parent as AttributeArgumentListSyntax;
var attributeSyntax = token.Parent.Parent as AttributeSyntax;
if (attributeSyntax == null || attributeArgumentList == null)
{
return(null);
}
// 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.GetCSharpSemanticModelForNodeAsync(attributeSyntax, cancellationToken).ConfigureAwait(false);
var nameColonItems = await GetNameColonItemsAsync(engine, workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
var nameEqualsItems = await GetNameEqualsItemsAsync(engine, workspace, semanticModel, position, token, attributeSyntax, existingNamedParameters, cancellationToken).ConfigureAwait(false);
// If we're after a name= parameter, then we only want to show name= parameters.
if (IsAfterNameEqualsArgument(token))
{
return(nameEqualsItems);
}
return(nameColonItems.Concat(nameEqualsItems));
}
private static void GetMemberCompletions(SemanticModel semanticModel, FieldAccessExpressionSyntax propertyAccessExpression, CompletionContext context)
{
var targetType = semanticModel.GetExpressionType(propertyAccessExpression.Expression);
if (targetType != null && !targetType.IsUnknown() && !targetType.IsError())
{
GetTypeCompletions(targetType, context);
}
}
private static async Task <ImmutableArray <CompletionItem> > GetSnippetsForDocumentAsync(
Document document, CompletionContext completionContext, CancellationToken cancellationToken)
{
var position = completionContext.Position;
var syntaxTree = await document.GetRequiredSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var syntaxFacts = document.GetRequiredLanguageService <ISyntaxFactsService>();
var semanticFacts = document.GetRequiredLanguageService <ISemanticFactsService>();
var root = syntaxTree.GetRoot(cancellationToken);
var leftToken = root.FindTokenOnLeftOfPosition(position, includeDirectives: true);
var targetToken = leftToken.GetPreviousTokenIfTouchingWord(position);
if (syntaxFacts.IsInNonUserCode(syntaxTree, position, cancellationToken) ||
syntaxTree.IsRightOfDotOrArrowOrColonColon(position, targetToken, cancellationToken) ||
syntaxFacts.GetContainingTypeDeclaration(root, position) is EnumDeclarationSyntax ||
syntaxTree.IsPossibleTupleContext(leftToken, position))
{
return(ImmutableArray <CompletionItem> .Empty);
}
var context = await completionContext.GetSyntaxContextWithExistingSpeculativeModelAsync(document, cancellationToken).ConfigureAwait(false);
var semanticModel = context.SemanticModel;
if (context.IsInTaskLikeTypeContext)
{
return(ImmutableArray <CompletionItem> .Empty);
}
if (syntaxFacts.IsPreProcessorDirectiveContext(syntaxTree, position, cancellationToken))
{
var directive = leftToken.GetAncestor <DirectiveTriviaSyntax>();
Contract.ThrowIfNull(directive);
if (!directive.DirectiveNameToken.IsKind(
SyntaxKind.IfKeyword,
SyntaxKind.RegionKeyword,
SyntaxKind.ElseKeyword,
SyntaxKind.ElifKeyword,
SyntaxKind.ErrorKeyword,
SyntaxKind.LineKeyword,
SyntaxKind.PragmaKeyword,
SyntaxKind.EndIfKeyword,
SyntaxKind.UndefKeyword,
SyntaxKind.EndRegionKeyword,
SyntaxKind.WarningKeyword))
{
return(GetSnippetCompletionItems(
document.Project.Solution.Workspace, semanticModel, isPreProcessorContext: true));
}
}
else
{
if (semanticFacts.IsGlobalStatementContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsExpressionContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsStatementContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsTypeContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsTypeDeclarationContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsNamespaceContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsNamespaceDeclarationNameContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsMemberDeclarationContext(semanticModel, position, cancellationToken) ||
semanticFacts.IsLabelContext(semanticModel, position, cancellationToken))
{
return(GetSnippetCompletionItems(
document.Project.Solution.Workspace, semanticModel, isPreProcessorContext: false));
}
}
return(ImmutableArray <CompletionItem> .Empty);
}
static void AddItems(CompletionItem item, bool isPublic, bool isInternalsVisible, CompletionContext completionContext, HashSet <string> namespacesInScope, TelemetryCounter counter)
{
if (isPublic || isInternalsVisible)
{
var containingNamespace = TypeImportCompletionItem.GetContainingNamespace(item);
if (!namespacesInScope.Contains(containingNamespace))
{
// We can return cached item directly, item's span will be fixed by completion service.
// On the other hand, because of this (i.e. mutating the span of cached item for each run),
// the provider can not be used as a service by components that might be run in parallel
// with completion, which would be a race.
completionContext.AddItem(item);
counter.ItemsCount++;;
}
}
}
public CompletionList Completion(TextDocumentIdentifier textDocument, Position position, CompletionContext context)
{
var doc = Session.DocumentStates[textDocument.Uri];
doc.AnalyzeAsync();
return
(Session.Project.GetCompletionList(doc, position, context)); //position, Session.PageInfoStore));
}
/// <summary> /// The decision for whether to provide preselected items can be contextual, e.g. based on trigger character and syntax location /// </summary> protected virtual Task <bool> ShouldProvidePreselectedItemsAsync(CompletionContext completionContext, SyntaxContext syntaxContext, Document document, int position, Lazy <ImmutableArray <ITypeSymbol> > inferredTypes, OptionSet options) => SpecializedTasks.True;
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
// var ctx = await completionContext.GetSyntaxContextAsync (engine.Workspace, cancellationToken).ConfigureAwait (false);
var document = completionContext.Document;
var semanticModel = ctx.SemanticModel;
var tree = ctx.SyntaxTree;
if (tree.IsInNonUserCode(completionContext.Position, cancellationToken))
{
return(Enumerable.Empty <CompletionData> ());
}
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var startLineNumber = text.Lines.IndexOf(completionContext.Position);
// modifiers* override modifiers* type? |
Accessibility seenAccessibility;
//DeclarationModifiers modifiers;
var token = tree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (token.Parent == null)
{
return(Enumerable.Empty <CompletionData> ());
}
var parentMember = token.Parent.AncestorsAndSelf().OfType <MemberDeclarationSyntax> ().FirstOrDefault(m => !m.IsKind(SyntaxKind.IncompleteMember));
if (!(parentMember is BaseTypeDeclarationSyntax) &&
/* May happen in case:
*
* override $
* public override string Foo () {}
*/
!(token.IsKind(SyntaxKind.OverrideKeyword) && token.Span.Start <= parentMember.Span.Start))
{
return(Enumerable.Empty <CompletionData> ());
}
var position = completionContext.Position;
var startToken = token.GetPreviousTokenIfTouchingWord(position);
ITypeSymbol returnType;
SyntaxToken tokenBeforeReturnType;
TryDetermineReturnType(startToken, semanticModel, cancellationToken, out returnType, out tokenBeforeReturnType);
if (returnType == null)
{
var enclosingType = semanticModel.GetEnclosingSymbol(position, cancellationToken) as INamedTypeSymbol;
if (enclosingType != null && (startToken.IsKind(SyntaxKind.OpenBraceToken) || startToken.IsKind(SyntaxKind.CloseBraceToken) || startToken.IsKind(SyntaxKind.SemicolonToken)))
{
return(CreateCompletionData(engine, semanticModel, position, returnType, Accessibility.NotApplicable, startToken, tokenBeforeReturnType, false, cancellationToken));
}
}
if (!TryDetermineModifiers(ref tokenBeforeReturnType, text, startLineNumber, out seenAccessibility /*, out modifiers*/) ||
!TryCheckForTrailingTokens(tree, text, startLineNumber, position, cancellationToken))
{
return(Enumerable.Empty <CompletionData> ());
}
return(CreateCompletionData(engine, semanticModel, position, returnType, seenAccessibility, startToken, tokenBeforeReturnType, true, cancellationToken));
}
public override async Task ProvideCompletionsAsync(CompletionContext 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)
.GetPreviousTokenIfTouchingWord(position);
if (!token.IsKind(SyntaxKind.OpenParenToken, SyntaxKind.OpenBracketToken, SyntaxKind.CommaToken))
{
return;
}
var argumentList = token.Parent as BaseArgumentListSyntax;
if (argumentList == null)
{
return;
}
var semanticModel = await document.GetSemanticModelForNodeAsync(argumentList, cancellationToken).ConfigureAwait(false);
var parameterLists = GetParameterLists(semanticModel, position, argumentList.Parent, cancellationToken);
if (parameterLists == null)
{
return;
}
var existingNamedParameters = GetExistingNamedParameters(argumentList, position);
parameterLists = parameterLists.Where(pl => IsValid(pl, existingNamedParameters));
var unspecifiedParameters = parameterLists.SelectMany(pl => pl)
.Where(p => !existingNamedParameters.Contains(p.Name))
.Distinct(this);
if (!unspecifiedParameters.Any())
{
return;
}
// Consider refining this logic to mandate completion with an argument name, if preceded by an out-of-position name
// See https://github.com/dotnet/roslyn/issues/20657
var languageVersion = ((CSharpParseOptions)document.Project.ParseOptions).LanguageVersion;
if (languageVersion < LanguageVersion.CSharp7_2 && token.IsMandatoryNamedParameterPosition())
{
context.IsExclusive = true;
}
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
var workspace = document.Project.Solution.Workspace;
foreach (var parameter in unspecifiedParameters)
{
// Note: the filter text does not include the ':'. We want to ensure that if
// the user types the name exactly (up to the colon) that it is selected as an
// exact match.
var escapedName = parameter.Name.ToIdentifierToken().ToString();
context.AddItem(SymbolCompletionItem.CreateWithSymbolId(
displayText: escapedName + ColonString,
symbols: ImmutableArray.Create(parameter),
rules: s_rules.WithMatchPriority(SymbolMatchPriority.PreferNamedArgument),
contextPosition: token.SpanStart,
filterText: escapedName));
}
}
public override Task ProvideCompletionsAsync(CompletionContext context) => Task.CompletedTask;
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var tree = await completionContext.Document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
if (tree.IsInNonUserCode(completionContext.Position, cancellationToken) ||
tree.IsPreProcessorDirectiveContext(completionContext.Position, cancellationToken) ||
info.CompletionTriggerReason != CompletionTriggerReason.CompletionCommand)
{
return(Enumerable.Empty <CompletionData>());
}
var token = tree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken);
if (token.Span.End == completionContext.Position)
{
return(Enumerable.Empty <CompletionData>());
}
var parent = token.Parent.AncestorsAndSelf().OfType <GenericNameSyntax> ().FirstOrDefault() ?? token.Parent;
if (!parent.Parent.IsKind(SyntaxKind.IncompleteMember) &&
!IsLocal(parent) &&
!parent.Parent.IsKind(SyntaxKind.Parameter) &&
!parent.Parent.IsKind(SyntaxKind.ForEachStatement))
{
return(Enumerable.Empty <CompletionData>());
}
if (info.TriggerCharacter != ' ' &&
parent.Parent.IsKind(SyntaxKind.ExpressionStatement))
{
return(Enumerable.Empty <CompletionData>());
}
var list = new List <CompletionData> ();
if (parent.IsKind(SyntaxKind.PredefinedType))
{
switch (token.Kind())
{
case SyntaxKind.ObjectKeyword:
list.Add(engine.Factory.CreateGenericData(this, "o", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "obj", GenericDataType.NameProposal));
return(list);
case SyntaxKind.BoolKeyword:
list.Add(engine.Factory.CreateGenericData(this, "b", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "pred", GenericDataType.NameProposal));
return(list);
case SyntaxKind.CharKeyword:
list.Add(engine.Factory.CreateGenericData(this, "c", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "ch", GenericDataType.NameProposal));
return(list);
case SyntaxKind.StringKeyword:
list.Add(engine.Factory.CreateGenericData(this, "str", GenericDataType.NameProposal));
return(list);
case SyntaxKind.DoubleKeyword:
case SyntaxKind.FloatKeyword:
case SyntaxKind.DecimalKeyword:
list.Add(engine.Factory.CreateGenericData(this, "d", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "f", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "m", GenericDataType.NameProposal));
return(list);
default:
list.Add(engine.Factory.CreateGenericData(this, "i", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "j", GenericDataType.NameProposal));
list.Add(engine.Factory.CreateGenericData(this, "k", GenericDataType.NameProposal));
return(list);
}
}
else
{
var incompleteMember = parent.Parent as IncompleteMemberSyntax;
if (incompleteMember != null)
{
return(list);
}
var gns = parent as GenericNameSyntax;
var names = WordParser.BreakWords(gns != null ? gns.Identifier.ToString() : token.ToString().Trim());
var possibleName = new StringBuilder();
for (int i = 0; i < names.Count; i++)
{
possibleName.Length = 0;
for (int j = i; j < names.Count; j++)
{
if (string.IsNullOrEmpty(names [j]))
{
continue;
}
if (j == i)
{
names [j] = Char.ToLower(names [j] [0]) + names [j].Substring(1);
}
possibleName.Append(names [j]);
}
list.Add(engine.Factory.CreateGenericData(this, possibleName.ToString(), GenericDataType.NameProposal));
}
}
return(list);
}
protected abstract bool ShouldProvideCompletion(CompletionContext completionContext, SyntaxContext syntaxContext);
private static void GetTypeCompletions(TypeSymbol targetType, CompletionContext context)
{
CreateSymbolCompletions(targetType.Members, context);
}
public virtual void Complete(CompletionContext context)
{
context.Editor.Document.Replace(context.StartOffset, context.Length, this.Text);
context.EndOffset = context.StartOffset + this.Text.Length;
}
public override async Task ProvideCompletionsAsync(CompletionContext completionContext)
{
try
{
var position = completionContext.Position;
var document = completionContext.Document;
var cancellationToken = completionContext.CancellationToken;
var semanticModel = await document.ReuseExistingSpeculativeModelAsync(position, cancellationToken).ConfigureAwait(false);
if (!completionContext.CompletionOptions.ShowNameSuggestions)
{
return;
}
var context = CSharpSyntaxContext.CreateContext(document, semanticModel, position, cancellationToken);
if (context.IsInNonUserCode)
{
return;
}
var nameInfo = await NameDeclarationInfo.GetDeclarationInfoAsync(document, position, cancellationToken).ConfigureAwait(false);
using var _ = ArrayBuilder <(string name, SymbolKind kind)> .GetInstance(out var result);
// Suggest names from existing overloads.
if (nameInfo.PossibleSymbolKinds.Any(k => k.SymbolKind == SymbolKind.Parameter))
{
var(_, partialSemanticModel) = await document.GetPartialSemanticModelAsync(cancellationToken).ConfigureAwait(false);
if (partialSemanticModel is not null)
{
AddNamesFromExistingOverloads(context, partialSemanticModel, result, cancellationToken);
}
}
var baseNames = GetBaseNames(semanticModel, nameInfo);
if (baseNames != default)
{
await GetRecommendedNamesAsync(baseNames, nameInfo, context, document, result, cancellationToken).ConfigureAwait(false);
}
var recommendedNames = result.ToImmutable();
if (recommendedNames.IsEmpty)
{
return;
}
var sortValue = 0;
foreach (var(name, kind) in recommendedNames)
{
// We've produced items in the desired order, add a sort text to each item to prevent alphabetization
completionContext.AddItem(CreateCompletionItem(name, GetGlyph(kind, nameInfo.DeclaredAccessibility), sortValue.ToString("D8")));
sortValue++;
}
completionContext.SuggestionModeItem = CommonCompletionItem.Create(
CSharpFeaturesResources.Name, displayTextSuffix: "", CompletionItemRules.Default);
}
catch (Exception e) when(FatalError.ReportAndCatchUnlessCanceled(e, ErrorSeverity.General))
{
// nop
}
}
private static void CreateSymbolCompletions(IEnumerable <Symbol> symbols, CompletionContext context)
{
context.AddItems(symbols
.GroupBy(s => s.Name)
.Select(g => CreateSymbolCompletionGroup(g.Key, g.ToImmutableArray())));
}
public override async Task ProvideCompletionsAsync(CompletionContext context)
{
var document = context.Document;
var position = context.Position;
var options = context.Options;
var cancellationToken = context.CancellationToken;
var span = new TextSpan(position, length: 0);
var semanticModel = await document.GetSemanticModelForSpanAsync(span, cancellationToken).ConfigureAwait(false);
var syntaxTree = semanticModel.SyntaxTree;
var syntaxFacts = document.GetLanguageService <ISyntaxFactsService>();
var semanticFacts = document.GetLanguageService <ISemanticFactsService>();
if (syntaxFacts.IsInNonUserCode(syntaxTree, position, cancellationToken) ||
semanticFacts.IsPreProcessorDirectiveContext(semanticModel, position, cancellationToken))
{
return;
}
if (!syntaxTree.IsRightOfDotOrArrowOrColonColon(position, cancellationToken))
{
return;
}
var node = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken)
.GetPreviousTokenIfTouchingWord(position)
.Parent;
if (node.Kind() != SyntaxKind.ExplicitInterfaceSpecifier)
{
return;
}
// Bind the interface name which is to the left of the dot
var name = ((ExplicitInterfaceSpecifierSyntax)node).Name;
var symbol = semanticModel.GetSymbolInfo(name, cancellationToken).Symbol as ITypeSymbol;
if (symbol?.TypeKind != TypeKind.Interface)
{
return;
}
var members = semanticModel.LookupSymbols(
position: name.SpanStart,
container: symbol)
.Where(s => !s.IsStatic)
.FilterToVisibleAndBrowsableSymbols(options.GetOption(CompletionOptions.HideAdvancedMembers, semanticModel.Language), semanticModel.Compilation);
// We're going to create a entry for each one, including the signature
var namePosition = name.SpanStart;
var text = await syntaxTree.GetTextAsync(cancellationToken).ConfigureAwait(false);
foreach (var member in members)
{
var displayText = member.ToMinimalDisplayString(semanticModel, namePosition, s_signatureDisplayFormat);
var insertionText = displayText;
context.AddItem(SymbolCompletionItem.Create(
displayText,
insertionText: insertionText,
span: context.DefaultItemSpan,
symbol: member,
contextPosition: position,
descriptionPosition: position,
rules: CompletionItemRules.Default));
}
}
protected override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var document = completionContext.Document;
var position = completionContext.Position;
var tree = ctx.SyntaxTree;
//DeclarationModifiers modifiers;
SyntaxToken token;
var semanticModel = ctx.SemanticModel;
var enclosingSymbol = semanticModel.GetEnclosingSymbol(position, cancellationToken) as INamedTypeSymbol;
// Only inside classes and structs
if (enclosingSymbol == null || !(enclosingSymbol.TypeKind == TypeKind.Struct || enclosingSymbol.TypeKind == TypeKind.Class))
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
if (!IsPartialCompletionContext(tree, position, cancellationToken /*, out modifiers*/, out token))
{
if (enclosingSymbol != null && (token.IsKind(SyntaxKind.OpenBraceToken) || token.IsKind(SyntaxKind.CloseBraceToken) || token.IsKind(SyntaxKind.SemicolonToken)))
{
return(Task.FromResult(CreateCompletionData(engine, semanticModel, position, enclosingSymbol, token, false, cancellationToken)));
}
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
return(Task.FromResult(CreateCompletionData(engine, semanticModel, position, enclosingSymbol, token, true, cancellationToken)));
}
