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 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);
}
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> ();
}
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> ();
}
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);
}
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;
}
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);
}
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>();
}
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;
}
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);
}
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;
}
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 async Task<bool> IsExclusiveAsync (CompletionContext completionContext, SyntaxContext ctx, CompletionTriggerInfo triggerInfo, 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 false;
}
if (!IsPartialCompletionContext (tree, position, cancellationToken/*, out modifiers*/, out token)) {
return false;
}
return true;
}
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);
}
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);
}
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)));
}
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);
}
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 workspace = document.Project.Solution.Workspace;
var semanticModel = await document.GetSemanticModelForSpanAsync(new TextSpan (position, 0), cancellationToken).ConfigureAwait(false);
var typeAndLocation = GetInitializedType(document, semanticModel, position, cancellationToken);
if (typeAndLocation == null)
{
return(Enumerable.Empty <CompletionData> ());
}
var initializedType = typeAndLocation.Item1 as INamedTypeSymbol;
var initializerLocation = typeAndLocation.Item2;
if (initializedType == null)
{
return(Enumerable.Empty <CompletionData> ());
}
// 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, initializedType) &&
m.CanBeReferencedByName &&
IsLegalFieldOrProperty(m) &&
!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());
// var text = await semanticModel.SyntaxTree.GetTextAsync(cancellationToken).ConfigureAwait(false);
// var changes = GetTextChangeSpan(text, position);
var list = new List <CompletionData> ();
// Return the members
foreach (var member in uninitializedMembers)
{
list.Add(engine.Factory.CreateSymbolCompletionData(this, member));
}
return(list);
}
protected override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var model = ctx.SemanticModel;
if (ctx.CSharpSyntaxContext.IsInNonUserCode)
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
if (ctx.TargetToken.IsKind(SyntaxKind.OverrideKeyword))
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
if (info.CompletionTriggerReason == CompletionTriggerReason.CharTyped && info.TriggerCharacter == ' ')
{
if (!ctx.CSharpSyntaxContext.IsEnumBaseListContext && !ctx.LeftToken.IsKind(SyntaxKind.EqualsToken) && !ctx.LeftToken.IsKind(SyntaxKind.EqualsEqualsToken))
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
// completionResult.AutoCompleteEmptyMatch = false;
}
var result = new List <CompletionData> ();
foreach (var r in recommender)
{
var recommended = r.RecommendKeywords(completionContext.Position, ctx.CSharpSyntaxContext, cancellationToken);
if (recommended == null)
{
continue;
}
foreach (var kw in recommended)
{
result.Add(engine.Factory.CreateKeywordCompletion(this, kw.Keyword, kw.Kind));
}
}
// if (ctx.IsPreProcessorKeywordContext) {
// foreach (var kw in preprocessorKeywords)
// result.Add(factory.CreateGenericData (this, kw, GenericDataType.PreprocessorKeyword));
// }
//
// if (parent.IsKind(SyntaxKind.TypeParameterConstraintClause)) {
// result.Add(factory.CreateGenericData (this, "new()", GenericDataType.PreprocessorKeyword));
// }
return(Task.FromResult((IEnumerable <CompletionData>)result));
}
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);
}
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));
}
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.OpenBracketToken &&
token.Kind() != SyntaxKind.CommaToken)
{
return(null);
}
var argumentList = token.Parent as BaseArgumentListSyntax;
if (argumentList == null)
{
return(null);
}
var semanticModel = await document.GetCSharpSemanticModelForNodeAsync(argumentList, cancellationToken).ConfigureAwait(false);
var parameterLists = GetParameterLists(semanticModel, position, argumentList.Parent, cancellationToken);
if (parameterLists == null)
{
return(null);
}
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);
// var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
return(unspecifiedParameters
.Select(p => engine.Factory.CreateGenericData(this, p.Name + ":", GenericDataType.NamedParameter)));
}
protected async Task<bool> IsExclusiveAsync(Document document, int caretPosition, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
var syntaxTree = await document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = syntaxTree.FindTokenOnLeftOfPosition(caretPosition, cancellationToken)
.GetPreviousTokenIfTouchingWord(caretPosition);
return IsAfterNameColonArgument(token) || IsAfterNameEqualsArgument(token);
}
protected async override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
if (info.IsDebugger)
{
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;
}
public override async Task<bool> IsExclusiveAsync(CompletionContext completionContext, SyntaxContext syntaxContext, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
var syntaxTree = await completionContext.Document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = syntaxTree.FindTokenOnLeftOfPosition(completionContext.Position, cancellationToken)
.GetPreviousTokenIfTouchingWord(completionContext.Position);
return IsAfterNameColonArgument(token) || IsAfterNameEqualsArgument(token);
}
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 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));
}
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, primitiveTypesKeywordKinds[i]));
}
return list;
}
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 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> ());
}
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 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 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>());
}
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 async Task <bool> IsExclusiveAsync(Document document, int position, 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 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);
}
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 override Task <bool> IsExclusiveAsync(CompletionContext completionContext, SyntaxContext ctx, CompletionTriggerInfo triggerInfo, 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(false));
}
if (!IsPartialCompletionContext(tree, position, cancellationToken /*, out modifiers*/, out token))
{
return(Task.FromResult(false));
}
return(Task.FromResult(true));
}
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 document = completionContext.Document;
var position = completionContext.Position;
var workspace = document.Project.Solution.Workspace;
var semanticModel = await document.GetSemanticModelForSpanAsync (new TextSpan (position, 0), cancellationToken).ConfigureAwait (false);
var typeAndLocation = GetInitializedType (document, semanticModel, position, cancellationToken);
if (typeAndLocation == null)
return Enumerable.Empty<CompletionData> ();
var initializedType = typeAndLocation.Item1 as INamedTypeSymbol;
var initializerLocation = typeAndLocation.Item2;
if (initializedType == null)
return Enumerable.Empty<CompletionData> ();
// 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, initializedType) &&
m.CanBeReferencedByName &&
IsLegalFieldOrProperty (m) &&
!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 ());
// var text = await semanticModel.SyntaxTree.GetTextAsync(cancellationToken).ConfigureAwait(false);
// var changes = GetTextChangeSpan(text, position);
var list = new List<CompletionData> ();
// Return the members
foreach (var member in uninitializedMembers) {
list.Add (engine.Factory.CreateSymbolCompletionData (this, member));
}
return list;
}
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 || 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 = handler.GetCompletionDataAsync (result, this, completionContext, info, ctx, cancellationToken).Result;
//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;
}
}
return result;
}
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);
}
public async Task <IEnumerable <CompletionData> > GetCompletionDataAsync(CompletionResult result, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken = default(CancellationToken))
{
// If we were triggered by typign a character, then do a semantic check to make sure
// we're still applicable. If not, then return immediately.
if (info.CompletionTriggerReason == CompletionTriggerReason.CharTyped)
{
var isSemanticTriggerCharacter = await IsSemanticTriggerCharacterAsync(completionContext.Document, completionContext.Position - 1, cancellationToken).ConfigureAwait(false);
if (!isSemanticTriggerCharacter)
{
return(null);
}
}
return(await GetItemsWorkerAsync(result, engine, completionContext, info, ctx, cancellationToken).ConfigureAwait(false));
}
protected override Task<IEnumerable<CompletionData>> GetItemsWorkerAsync (CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var semanticModel = ctx.SemanticModel;
var result = new List<CompletionData> ();
if (info.TriggerCharacter == ' ') {
var newExpression = ObjectCreationContextHandler.GetObjectCreationNewExpression (ctx.SyntaxTree, completionContext.Position, cancellationToken);
if (newExpression == null && info.CompletionTriggerReason == CompletionTriggerReason.CharTyped && !ctx.LeftToken.IsKind (SyntaxKind.EqualsToken) && !ctx.LeftToken.IsKind (SyntaxKind.EqualsEqualsToken))
return Task.FromResult (Enumerable.Empty<CompletionData> ());
completionResult.AutoCompleteEmptyMatch = false;
}
var parent = ctx.TargetToken.Parent;
bool isInAttribute = ctx.CSharpSyntaxContext.IsAttributeNameContext;
bool isInBaseList = parent != null && parent.IsKind (SyntaxKind.BaseList);
bool isInUsingDirective = parent != null && parent.Parent != null && parent.Parent.IsKind (SyntaxKind.UsingDirective) && !parent.IsKind (SyntaxKind.QualifiedName);
var isInQuery = ctx.CSharpSyntaxContext.IsInQuery;
var completionDataLookup = new Dictionary<Tuple<string, SymbolKind>, ISymbolCompletionData> ();
bool isInCatchTypeExpression = parent != null && parent.IsKind (SyntaxKind.CatchDeclaration) ||
parent.IsKind (SyntaxKind.QualifiedName) && parent.Parent != null && parent.Parent.IsKind (SyntaxKind.CatchDeclaration);
Action<ISymbolCompletionData> addData = d => {
var key = Tuple.Create (d.DisplayText, d.Symbol.Kind);
ISymbolCompletionData data;
if (completionDataLookup.TryGetValue (key, out data)) {
data.AddOverload (d);
return;
}
completionDataLookup.Add (key, d);
result.Add (d);
};
var completionCategoryLookup = new Dictionary<string, CompletionCategory> ();
foreach (var symbol in Recommender.GetRecommendedSymbolsAtPosition (semanticModel, completionContext.Position, engine.Workspace, null, cancellationToken)) {
if (symbol.Kind == SymbolKind.NamedType) {
if (isInAttribute) {
var type = (ITypeSymbol)symbol;
if (type.IsAttribute ()) {
var v = type.Name.Substring (0, type.Name.Length - "Attribute".Length);
var needsEscaping = SyntaxFacts.GetKeywordKind(v) != SyntaxKind.None;
needsEscaping = needsEscaping || (isInQuery && SyntaxFacts.IsQueryContextualKeyword(SyntaxFacts.GetContextualKeywordKind(v)));
if (!needsEscaping) {
addData (engine.Factory.CreateSymbolCompletionData (this, symbol, v));
continue;
}
}
}
if (isInBaseList) {
var type = (ITypeSymbol)symbol;
if (type.IsSealed || type.IsStatic)
continue;
}
if (isInCatchTypeExpression) {
var type = (ITypeSymbol)symbol;
if (!IsException (type))
continue;
}
}
if (isInUsingDirective && symbol.Kind != SymbolKind.Namespace)
continue;
var newData = engine.Factory.CreateSymbolCompletionData (this, symbol, symbol.Name.EscapeIdentifier (isInQuery));
ISymbol categorySymbol;
var method = symbol as IMethodSymbol;
if (method != null) {
if (method.IsReducedExtension ()) {
categorySymbol = method.ReceiverType;
} else {
categorySymbol = (ISymbol)symbol.ContainingType;
}
} else {
categorySymbol = (ISymbol)symbol.ContainingType ?? symbol.ContainingNamespace;
}
if (categorySymbol != null) {
CompletionCategory category;
var key = categorySymbol.ToDisplayString ();
if (!completionCategoryLookup.TryGetValue (key, out category)) {
completionCategoryLookup [key] = category = engine.Factory.CreateCompletionDataCategory (categorySymbol);
}
newData.CompletionCategory = category;
}
addData (newData);
}
return Task.FromResult ((IEnumerable<CompletionData>)result);
}
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)
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
var list = new List <CompletionData> ();
var within = model.GetEnclosingNamedTypeOrAssembly(position, cancellationToken);
var addedSymbols = new HashSet <string> ();
SyntaxNode ancestor = ma.Expression;
while (ancestor != null)
{
// check parent if for direct type check
var ifStmSyntax = ancestor as IfStatementSyntax;
if (ifStmSyntax != null)
{
var condition = SkipParens(ifStmSyntax.Condition);
if (condition != null && condition.IsKind(SyntaxKind.IsExpression))
{
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, model.GetTypeInfo(isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
// skip if else ... if else
if (ancestor.Parent is ElseClauseSyntax)
{
while (ancestor is IfStatementSyntax || ancestor is ElseClauseSyntax)
{
ancestor = ancestor.Parent;
}
continue;
}
goto loop;
}
// check parent block if an if is there that checks the type
var blockSyntax = ancestor as BlockSyntax;
if (blockSyntax != null)
{
foreach (var ifStmt in blockSyntax.Statements.OfType <IfStatementSyntax> ())
{
if (ifStmt.Span.End >= ma.Span.Start)
{
break;
}
var condition = SkipParens(ifStmt.Condition);
bool wasNegated = false;
if (condition.IsKind(SyntaxKind.LogicalNotExpression))
{
condition = SkipParens(((PrefixUnaryExpressionSyntax)condition).Operand);
wasNegated = true;
}
if (condition == null || !condition.IsKind(SyntaxKind.IsExpression))
{
goto loop;
}
var stmt = ifStmt.Statement;
if (stmt is BlockSyntax)
{
stmt = ((BlockSyntax)stmt).Statements.LastOrDefault();
}
if (!wasNegated ||
stmt == null ||
!stmt.IsKind(SyntaxKind.ReturnStatement) && !stmt.IsKind(SyntaxKind.ContinueStatement) && !stmt.IsKind(SyntaxKind.BreakStatement) && !stmt.IsKind(SyntaxKind.ThrowStatement))
{
goto loop;
}
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, model.GetTypeInfo(isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
}
var binOp = ancestor as BinaryExpressionSyntax;
if (binOp != null && binOp.IsKind(SyntaxKind.LogicalAndExpression))
{
if (SkipParens(binOp.Left).IsKind(SyntaxKind.IsExpression))
{
var isExpr = (BinaryExpressionSyntax)SkipParens(binOp.Left);
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, model.GetTypeInfo(isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
}
loop : ancestor = ancestor.Parent;
}
return(Task.FromResult((IEnumerable <CompletionData>)list));
}
public override async Task <bool> IsExclusiveAsync(Document document, int position, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
var syntaxTree = await document.GetCSharpSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = syntaxTree.FindTokenOnLeftOfPosition(position, cancellationToken)
.GetPreviousTokenIfTouchingWord(position);
return(IsAfterNameColonArgument(token) || IsAfterNameEqualsArgument(token));
}
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)
return Task.FromResult (Enumerable.Empty<CompletionData> ());
var list = new List<CompletionData> ();
var within = model.GetEnclosingNamedTypeOrAssembly(position, cancellationToken);
var addedSymbols = new HashSet<string> ();
SyntaxNode ancestor = ma.Expression;
while (ancestor != null) {
// check parent if for direct type check
var ifStmSyntax = ancestor as IfStatementSyntax;
if (ifStmSyntax != null) {
var condition = ifStmSyntax.Condition.SkipParens ();
if (condition != null && condition.IsKind (SyntaxKind.IsExpression)) {
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, model.GetTypeInfo (isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
// skip if else ... if else
if (ancestor.Parent is ElseClauseSyntax) {
while (ancestor is IfStatementSyntax || ancestor is ElseClauseSyntax)
ancestor = ancestor.Parent;
continue;
}
goto loop;
}
// check parent block if an if is there that checks the type
var blockSyntax = ancestor as BlockSyntax;
if (blockSyntax != null) {
foreach (var ifStmt in blockSyntax.Statements.OfType<IfStatementSyntax> ()) {
if (ifStmt.Span.End >= ma.Span.Start)
break;
var condition = ifStmt.Condition.SkipParens ();
bool wasNegated = false;
if (condition.IsKind (SyntaxKind.LogicalNotExpression)) {
condition = ((PrefixUnaryExpressionSyntax)condition).Operand.SkipParens ();
wasNegated = true;
}
if (condition == null || !condition.IsKind (SyntaxKind.IsExpression))
goto loop;
var stmt = ifStmt.Statement;
if (stmt is BlockSyntax) {
stmt = ((BlockSyntax)stmt).Statements.LastOrDefault ();
}
if (!wasNegated ||
stmt == null ||
!stmt.IsKind (SyntaxKind.ReturnStatement) && !stmt.IsKind (SyntaxKind.ContinueStatement) && !stmt.IsKind (SyntaxKind.BreakStatement) && !stmt.IsKind (SyntaxKind.ThrowStatement))
goto loop;
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, model.GetTypeInfo (isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
}
var binOp = ancestor as BinaryExpressionSyntax;
if (binOp != null && binOp.IsKind (SyntaxKind.LogicalAndExpression)) {
if (binOp.Left.SkipParens ().IsKind (SyntaxKind.IsExpression)) {
var isExpr = ((BinaryExpressionSyntax)binOp.Left.SkipParens ());
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, model.GetTypeInfo (isExpr.Left).Type, within, list, addedSymbols, cancellationToken);
}
}
}
}
loop: ancestor = ancestor.Parent;
}
return Task.FromResult ((IEnumerable<CompletionData>)list);
}
public virtual Task <bool> IsExclusiveAsync(Document document, int position, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
return(Task.FromResult(false));
}
protected async override Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult completionResult, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken)
{
var semanticModel = ctx.SemanticModel;
var result = new List <CompletionData> ();
if (info.TriggerCharacter == ' ')
{
var newExpression = ObjectCreationContextHandler.GetObjectCreationNewExpression(ctx.SyntaxTree, completionContext.Position, cancellationToken);
if (newExpression == null && info.CompletionTriggerReason == CompletionTriggerReason.CharTyped && !ctx.LeftToken.IsKind(SyntaxKind.EqualsToken) && !ctx.LeftToken.IsKind(SyntaxKind.EqualsEqualsToken))
{
return(Enumerable.Empty <CompletionData> ());
}
completionResult.AutoCompleteEmptyMatch = false;
}
var parent = ctx.TargetToken.Parent;
bool isInAttribute = ctx.CSharpSyntaxContext.IsAttributeNameContext;
bool isInBaseList = parent != null && parent.IsKind(SyntaxKind.BaseList);
bool isInUsingDirective = parent != null && parent.Parent != null && parent.Parent.IsKind(SyntaxKind.UsingDirective) && !parent.IsKind(SyntaxKind.QualifiedName);
var isInQuery = ctx.CSharpSyntaxContext.IsInQuery;
var completionDataLookup = new Dictionary <Tuple <string, SymbolKind>, ISymbolCompletionData> ();
bool isInCatchTypeExpression = parent.IsKind(SyntaxKind.CatchDeclaration) ||
parent.IsKind(SyntaxKind.QualifiedName) && parent != null && parent.Parent.IsKind(SyntaxKind.CatchDeclaration);
Action <ISymbolCompletionData> addData = d => {
var key = Tuple.Create(d.DisplayText, d.Symbol.Kind);
ISymbolCompletionData data;
if (completionDataLookup.TryGetValue(key, out data))
{
data.AddOverload(d);
return;
}
completionDataLookup.Add(key, d);
result.Add(d);
};
var completionCategoryLookup = new Dictionary <string, CompletionCategory> ();
foreach (var symbol in Recommender.GetRecommendedSymbolsAtPosition(semanticModel, completionContext.Position, engine.Workspace, null, cancellationToken))
{
if (symbol.Kind == SymbolKind.NamedType)
{
if (isInAttribute)
{
var type = (ITypeSymbol)symbol;
if (type.IsAttribute())
{
var v = type.Name.Substring(0, type.Name.Length - "Attribute".Length);
var needsEscaping = SyntaxFacts.GetKeywordKind(v) != SyntaxKind.None;
needsEscaping = needsEscaping || (isInQuery && SyntaxFacts.IsQueryContextualKeyword(SyntaxFacts.GetContextualKeywordKind(v)));
if (!needsEscaping)
{
addData(engine.Factory.CreateSymbolCompletionData(this, symbol, v));
continue;
}
}
}
if (isInBaseList)
{
var type = (ITypeSymbol)symbol;
if (type.IsSealed || type.IsStatic)
{
continue;
}
}
if (isInCatchTypeExpression)
{
var type = (ITypeSymbol)symbol;
if (!IsException(type))
{
continue;
}
}
}
if (isInUsingDirective && symbol.Kind != SymbolKind.Namespace)
{
continue;
}
var newData = engine.Factory.CreateSymbolCompletionData(this, symbol, symbol.Name.EscapeIdentifier(isInQuery));
var categorySymbol = (ISymbol)symbol.ContainingType ?? symbol.ContainingNamespace;
if (categorySymbol != null)
{
CompletionCategory category;
var key = categorySymbol.ToDisplayString();
if (!completionCategoryLookup.TryGetValue(key, out category))
{
completionCategoryLookup [key] = category = engine.Factory.CreateCompletionDataCategory(categorySymbol);
}
newData.CompletionCategory = category;
}
addData(newData);
}
return(result);
}
protected abstract Task <IEnumerable <CompletionData> > GetItemsWorkerAsync(CompletionResult result, CompletionEngine engine, CompletionContext completionContext, CompletionTriggerInfo info, SyntaxContext ctx, CancellationToken cancellationToken);
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);
if (enclosingType == null)
{
return(Task.FromResult(Enumerable.Empty <CompletionData> ()));
}
var list = new List <CompletionData> ();
foreach (var type in ctx.InferredTypes)
{
if (type.TypeKind != TypeKind.Delegate)
{
continue;
}
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 virtual Task <bool> IsExclusiveAsync(CompletionContext completionContext, SyntaxContext syntaxContext, CompletionTriggerInfo triggerInfo, CancellationToken cancellationToken)
{
return(Task.FromResult(false));
}
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;
}