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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.Utilities
Namespace Microsoft.CodeAnalysis.VisualBasic.Completion.KeywordRecommenders.Declarations
''' <summary>
''' Recommends the "Sub" keyword in member declaration contexts
''' </summary>
Friend Class SubKeywordRecommender
Inherits AbstractKeywordRecommender
Protected Overrides Function RecommendKeywords(context As VisualBasicSyntaxContext, cancellationToken As CancellationToken) As ImmutableArray(Of RecommendedKeyword)
If context.IsTypeMemberDeclarationKeywordContext OrElse context.IsInterfaceMemberDeclarationKeywordContext Then
Dim modifiers = context.ModifierCollectionFacts
If modifiers.CouldApplyToOneOf(PossibleDeclarationTypes.Method) AndAlso
modifiers.IteratorKeyword.Kind = SyntaxKind.None Then
Return ImmutableArray.Create(New RecommendedKeyword("Sub", VBFeaturesResources.Declares_the_name_parameters_and_code_that_define_a_Sub_procedure_that_is_a_procedure_that_does_not_return_a_value_to_the_calling_code))
End If
End If
' Exit Sub
If context.FollowsEndOfStatement Then
Return ImmutableArray(Of RecommendedKeyword).Empty
End If
Dim targetToken = context.TargetToken
If targetToken.IsKindOrHasMatchingText(SyntaxKind.ExitKeyword) AndAlso
context.IsInStatementBlockOfKind(SyntaxKind.SubBlock, SyntaxKind.MultiLineSubLambdaExpression) AndAlso
Not context.IsInStatementBlockOfKind(SyntaxKind.FinallyBlock) Then
Return ImmutableArray.Create(New RecommendedKeyword("Sub", VBFeaturesResources.Exits_a_Sub_procedure_and_transfers_execution_immediately_to_the_statement_following_the_call_to_the_Sub_procedure))
End If
Return ImmutableArray(Of RecommendedKeyword).Empty
End Function
End Class
End Namespace
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