[clang-tools-extra] [clang-tidy] Enhance modernize-use-starts-ends-with to handle substr patterns (PR #116033)

[Piotr Zegar via cfe-commits]

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@@ -183,40 +210,45 @@ void UseStartsEndsWithCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *EndsWithFunction =
       Result.Nodes.getNodeAs<CXXMethodDecl>("ends_with_fun");
   assert(bool(StartsWithFunction) != bool(EndsWithFunction));
+
   const CXXMethodDecl *ReplacementFunction =
       StartsWithFunction ? StartsWithFunction : EndsWithFunction;
 
-  if (ComparisonExpr->getBeginLoc().isMacroID())
+  if (ComparisonExpr->getBeginLoc().isMacroID() ||
+      FindExpr->getBeginLoc().isMacroID())
     return;
 
-  const bool Neg = ComparisonExpr->getOpcode() == BO_NE;
+  const bool Neg = isNegativeComparison(ComparisonExpr);
 
-  auto Diagnostic =
-      diag(FindExpr->getExprLoc(), "use %0 instead of %1() %select{==|!=}2 0")
-      << ReplacementFunction->getName() << FindFun->getName() << Neg;
+  // Retrieve the source text of the search expression.
+  const auto SearchExprText = Lexer::getSourceText(
+      CharSourceRange::getTokenRange(SearchExpr->getSourceRange()),
+      *Result.SourceManager, Result.Context->getLangOpts());
 
-  // Remove possible arguments after search expression and ' [!=]= .+' suffix.
-  Diagnostic << FixItHint::CreateReplacement(
-      CharSourceRange::getTokenRange(
-          Lexer::getLocForEndOfToken(SearchExpr->getEndLoc(), 0,
-                                     *Result.SourceManager, getLangOpts()),
-          ComparisonExpr->getEndLoc()),
-      ")");
+  auto Diag = diag(FindExpr->getExprLoc(),
+                   FindFun->getName() == "substr"
+                       ? "use %0 instead of %1() %select{==|!=}2"
+                       : "use %0 instead of %1() %select{==|!=}2 0")
+              << ReplacementFunction->getName() << FindFun->getName() << Neg;
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PiotrZSL wrote:

this "->getName()" shouldn't be need here.

https://github.com/llvm/llvm-project/pull/116033