78 lines
3.3 KiB
C#
78 lines
3.3 KiB
C#
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// Copyright (c) Microsoft. All Rights Reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.ComponentModel.Composition;
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using dnSpy.Roslyn.EditorFeatures.Editor;
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using dnSpy.Roslyn.EditorFeatures.Host;
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using dnSpy.Roslyn.EditorFeatures.TextStructureNavigation;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using Microsoft.CodeAnalysis.CSharp.Extensions;
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using Microsoft.VisualStudio.Text;
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using Microsoft.VisualStudio.Text.Operations;
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using Microsoft.VisualStudio.Utilities;
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namespace dnSpy.Roslyn.CSharp.EditorFeatures.TextStructureNavigation
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{
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[Export(typeof(ITextStructureNavigatorProvider))]
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[ContentType(ContentTypeNames.CSharpContentType)]
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internal class TextStructureNavigatorProvider : AbstractTextStructureNavigatorProvider
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{
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[ImportingConstructor]
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internal TextStructureNavigatorProvider(
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ITextStructureNavigatorSelectorService selectorService,
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IContentTypeRegistryService contentTypeService,
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IWaitIndicator waitIndicator)
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: base(selectorService, contentTypeService, waitIndicator)
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{
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}
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protected override bool ShouldSelectEntireTriviaFromStart(SyntaxTrivia trivia)
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{
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return trivia.IsRegularOrDocComment();
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}
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protected override bool IsWithinNaturalLanguage(SyntaxToken token, int position)
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{
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switch (token.Kind())
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{
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case SyntaxKind.StringLiteralToken:
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// This, in combination with the override of GetExtentOfWordFromToken() below, treats the closing
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// quote as a separate token. This maintains behavior with VS2013.
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if (position == token.Span.End - 1 && token.Text.EndsWith("\"", StringComparison.Ordinal))
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{
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return false;
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}
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return true;
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case SyntaxKind.CharacterLiteralToken:
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// Before the ' is considered outside the character
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return position != token.SpanStart;
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case SyntaxKind.InterpolatedStringTextToken:
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case SyntaxKind.XmlTextLiteralToken:
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return true;
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}
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return false;
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}
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protected override TextExtent GetExtentOfWordFromToken(SyntaxToken token, SnapshotPoint position)
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{
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if (token.Kind() == SyntaxKind.StringLiteralToken && position.Position == token.Span.End - 1 && token.Text.EndsWith("\"", StringComparison.Ordinal))
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{
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// Special case to treat the closing quote of a string literal as a separate token. This allows the
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// cursor to stop during word navigation (Ctrl+LeftArrow, etc.) immediately before AND after the
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// closing quote, just like it did in VS2013 and like it currently does for interpolated strings.
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var span = new Span(position.Position, 1);
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return new TextExtent(new SnapshotSpan(position.Snapshot, span), isSignificant: true);
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}
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else
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{
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return base.GetExtentOfWordFromToken(token, position);
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}
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}
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}
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}
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