|
// 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 System.Linq;
using Microsoft.CodeAnalysis.Indentation;
using Microsoft.CodeAnalysis.Text;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Shared.Extensions;
namespace Microsoft.CodeAnalysis.Wrapping;
/// <summary>
/// Common implementation of all <see cref="ISyntaxWrapper"/>. This type takes care of a lot of common logic for
/// all of them, including:
///
/// 1. Keeping track of code action invocations, allowing code actions to then be prioritized on
/// subsequent invocations.
///
/// 2. Checking nodes and tokens to make sure they are safe to be wrapped.
///
/// Individual subclasses may be targeted at specific syntactic forms. For example, wrapping
/// lists, or wrapping logical expressions.
/// </summary>
internal abstract partial class AbstractSyntaxWrapper : ISyntaxWrapper
{
protected IIndentationService IndentationService { get; }
protected AbstractSyntaxWrapper(IIndentationService indentationService)
=> IndentationService = indentationService;
public abstract Task<ICodeActionComputer?> TryCreateComputerAsync(
Document document, int position, SyntaxNode node, SyntaxWrappingOptions options, bool containsSyntaxError, CancellationToken cancellationToken);
protected static async Task<bool> ContainsUnformattableContentAsync(
Document document, IEnumerable<SyntaxNodeOrToken> nodesAndTokens, CancellationToken cancellationToken)
{
// For now, don't offer if any item spans multiple lines. We'll very likely screw up
// formatting badly. If this is really important to support, we can put in the effort
// to properly move multi-line items around (which would involve properly fixing up the
// indentation of lines within them.
//
// https://github.com/dotnet/roslyn/issues/31575
var sourceText = await document.GetValueTextAsync(cancellationToken).ConfigureAwait(false);
foreach (var item in nodesAndTokens)
{
if (item == null || item.Span.IsEmpty || item.IsMissing)
return true;
var firstToken = item.IsToken ? item.AsToken() : item.AsNode()!.GetFirstToken();
var lastToken = item.IsToken ? item.AsToken() : item.AsNode()!.GetLastToken();
// Note: we check if things are on the same line, even in the case of a single token.
// This is so that we don't try to wrap multiline tokens either (like a multi-line
// string).
if (!sourceText.AreOnSameLine(firstToken, lastToken))
return true;
}
return false;
}
protected static bool ContainsOverlappingSyntaxError(SyntaxNode declaration, TextSpan headerSpan)
=> declaration.GetDiagnostics().Any(d => d.Severity == DiagnosticSeverity.Error && d.Location.SourceSpan.OverlapsWith(headerSpan));
}
|