text: //===--- LambdaFunctionNameCheck.h - clang-tidy------------------*- C++ -*-===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_LAMBDAFUNCTIONNAMECHECK_H
  #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_LAMBDAFUNCTIONNAMECHECK_H
  
  #include "../ClangTidy.h"
  
  namespace clang {
  namespace tidy {
  namespace bugprone {
  
  /// Detect when __func__ or __FUNCTION__ is being used from within a lambda. In
  /// that context, those expressions expand to the name of the call operator
  /// (i.e., `operator()`).
  ///
  /// For the user-facing documentation see:
  /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-lambda-function-name.html
  class LambdaFunctionNameCheck : public ClangTidyCheck {
  public:
    struct SourceRangeLessThan {
      bool operator()(const SourceRange &L, const SourceRange &R) const {
        if (L.getBegin() == R.getBegin()) {
          return L.getEnd() < R.getEnd();
        }
        return L.getBegin() < R.getBegin();
      }
    };
    using SourceRangeSet = std::set<SourceRange, SourceRangeLessThan>;
  
    LambdaFunctionNameCheck(StringRef Name, ClangTidyContext *Context)
        : ClangTidyCheck(Name, Context) {}
    void registerMatchers(ast_matchers::MatchFinder *Finder) override;
    void registerPPCallbacks(CompilerInstance &Compiler) override;
    void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
  
  private:
    SourceRangeSet SuppressMacroExpansions;
  };
  
  } // namespace bugprone
  } // namespace tidy
  } // namespace clang
  
  #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_LAMBDAFUNCTIONNAMECHECK_H
  