|
// 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.
using Microsoft.CodeAnalysis.Text;
using Microsoft.CodeAnalysis.LanguageService;
using System.Diagnostics.CodeAnalysis;
namespace Microsoft.CodeAnalysis;
internal sealed class SnippetUtilities
{
public static bool TryGetWordOnLeft(int position, SourceText currentText, ISyntaxFactsService syntaxFactsService, [NotNullWhen(true)] out TextSpan? wordSpan)
{
var endPosition = position;
var startPosition = endPosition;
// Find the snippet shortcut
while (startPosition > 0)
{
var c = currentText[startPosition - 1];
if (!syntaxFactsService.IsIdentifierPartCharacter(c) && c != '#' && c != '~')
{
break;
}
startPosition--;
}
if (startPosition == endPosition)
{
wordSpan = null;
return false;
}
wordSpan = TextSpan.FromBounds(startPosition, endPosition);
return true;
}
}
|