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' Licensed to the .NET Foundation under one or more agreements.
' The .NET Foundation licenses this file to you under the MIT license.
' See the LICENSE file in the project root for more information.
Imports System.Collections.Immutable
Imports System.Threading
Imports Microsoft.CodeAnalysis.Completion.Providers
Imports Microsoft.CodeAnalysis.VisualBasic.Extensions.ContextQuery
Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
Namespace Microsoft.CodeAnalysis.VisualBasic.Completion.KeywordRecommenders.Expressions
''' <summary>
''' Recommends the "New" keyword.
''' </summary>
Friend Class NewKeywordRecommender
Inherits AbstractKeywordRecommender
Private Shared ReadOnly s_keywords As ImmutableArray(Of RecommendedKeyword) =
ImmutableArray.Create(New RecommendedKeyword("New", VBFeaturesResources.Creates_a_new_object_instance))
Protected Overrides Function RecommendKeywords(context As VisualBasicSyntaxContext, cancellationToken As CancellationToken) As ImmutableArray(Of RecommendedKeyword)
If context.IsAnyExpressionContext Then
Return s_keywords
End If
If context.FollowsEndOfStatement Then
Return ImmutableArray(Of RecommendedKeyword).Empty
End If
Dim targetToken = context.TargetToken
If targetToken.IsChildToken(Of AsClauseSyntax)(Function(asClause) asClause.AsKeyword) Then
Dim asClause = targetToken.GetAncestor(Of AsClauseSyntax)()
If asClause.IsParentKind(SyntaxKind.VariableDeclarator) OrElse
(asClause.IsParentKind(SyntaxKind.PropertyStatement) AndAlso
Not DirectCast(asClause.Parent, PropertyStatementSyntax).Modifiers.Any(
Function(m) m.IsKind(SyntaxKind.WriteOnlyKeyword))) Then
Return s_keywords
End If
End If
Return ImmutableArray(Of RecommendedKeyword).Empty
End Function
End Class
End Namespace
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