clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidDoWhileCheck.cpp

   1 //===--- AvoidDoWhileCheck.cpp - clang-tidy -------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "AvoidDoWhileCheck.h"
  10 #include "clang/AST/ASTContext.h"
  11 #include "clang/ASTMatchers/ASTMatchFinder.h"
  12
  13 using namespace clang::ast_matchers;
  14
  15 namespace clang::tidy::cppcoreguidelines {
  16
  17 AvoidDoWhileCheck::AvoidDoWhileCheck(StringRef Name, ClangTidyContext *Context)
  18     : ClangTidyCheck(Name, Context),
  19       IgnoreMacros(Options.getLocalOrGlobal("IgnoreMacros", false)) {}
  20
  21 void AvoidDoWhileCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
  22   Options.store(Opts, "IgnoreMacros", IgnoreMacros);
  23 }
  24
  25 void AvoidDoWhileCheck::registerMatchers(MatchFinder *Finder) {
  26   Finder->addMatcher(doStmt().bind("x"), this);
  27 }
  28
  29 void AvoidDoWhileCheck::check(const MatchFinder::MatchResult &Result) {
  30   if (const auto *MatchedDecl = Result.Nodes.getNodeAs<DoStmt>("x")) {
  31     if (IgnoreMacros && MatchedDecl->getBeginLoc().isMacroID())
  32       return;
  33     diag(MatchedDecl->getBeginLoc(), "avoid do-while loops");
  34   }
  35 }
  36
  37 } // namespace clang::tidy::cppcoreguidelines