Fix analyzer RCS0053 - preprocessor directive (#1547)

ChangeLog.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix analyzer [RCS0053](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS0053) ([PR](https://github.com/dotnet/roslynator/pull/1547))
+
 ## [4.12.7] - 2024-10-01
 
 ### Fixed

src/Common/CSharp/SyntaxTriviaAnalysis.cs

@@ -226,9 +226,12 @@ public static IEnumerable<IndentationInfo> FindIndentations(SyntaxNode node, Tex
  {
  foreach (SyntaxTrivia trivia in node.DescendantTrivia(span))
  {
- if (trivia.IsKind(SyntaxKind.EndOfLineTrivia, SyntaxKind.SingleLineDocumentationCommentTrivia))
+ if (trivia.IsKind(SyntaxKind.EndOfLineTrivia, SyntaxKind.SingleLineDocumentationCommentTrivia)
+ || SyntaxFacts.IsPreprocessorDirective(trivia.Kind()))
  {
- int position = trivia.Span.End;
+ int position = (SyntaxFacts.IsPreprocessorDirective(trivia.Kind()))
+ ? trivia.FullSpan.End
+ : trivia.Span.End;
 
  if (span.Contains(position))
  {

src/Tests/Formatting.Analyzers.Tests/RCS0053FixFormattingOfListTests.cs

@@ -1111,6 +1111,48 @@ void M()
 """);
  }
 
+ [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.FixFormattingOfList)]
+ public async Task Test_Multiline_PreprocessorDirectives()
+ {
+ await VerifyDiagnosticAndFixAsync("""
+#define FOO
+using System.Collections.Generic;
+
+class C
+{
+ void M()
+ {
+ var x = new List<string>([|new string[]
+ {
+ "",
+ "",
+#if FOO
+ "",
+#endif
+ }|]);
+ }
+}
+""", """
+#define FOO
+using System.Collections.Generic;
+
+class C
+{
+ void M()
+ {
+ var x = new List<string>(new string[]
+ {
+ "",
+ "",
+#if FOO
+ "",
+#endif
+ });
+ }
+}
+""");
+ }
+
  [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.FixFormattingOfList)]
  public async Task TestNoDiagnostic_Singleline()
  {