MA0150 Skip ToString on anonymous types

meziantou · Jan 5, 2024 · 86c9051 · 86c9051
1 parent 4e52050
commit 86c9051
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diff --git a/src/Meziantou.Analyzer/Rules/DoNotUseToStringIfObjectAnalyzer.cs b/src/Meziantou.Analyzer/Rules/DoNotUseToStringIfObjectAnalyzer.cs
@@ -78,6 +78,9 @@ public void AnalyzeInterpolation(OperationAnalysisContext context)
  public void AnalyzeInvocation(OperationAnalysisContext context)
  {
  var operation = (IInvocationOperation)context.Operation;
+ if (operation.Instance?.Type?.IsAnonymousType is true)
+ return;
+
  if (IsDefaultToString(operation.TargetMethod))
  return;
 

diff --git a/tests/Meziantou.Analyzer.Test/Rules/DoNotUseToStringIfObjectAnalyzerTests.cs b/tests/Meziantou.Analyzer.Test/Rules/DoNotUseToStringIfObjectAnalyzerTests.cs
@@ -295,6 +295,17 @@ await CreateProjectBuilder()
  .ValidateAsync();
  }
 
+ [Fact]
+ public async Task ToString_AnonymousType()
+ {
+ var sourceCode = """
+new { FirstName = "" }.ToString();
+""";
+ await CreateProjectBuilder()
+ .WithSourceCode(sourceCode)
+ .ValidateAsync();
+ }
+
  [Fact]
  public async Task Interpolation_ReproCachingIssue()
  {