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//===--- TerminatingContinueCheck.cpp - clang-tidy-------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "TerminatingContinueCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Lex/Lexer.h"
#include "clang/Tooling/FixIt.h"
using namespace clang::ast_matchers;
namespace clang::tidy::bugprone {
void TerminatingContinueCheck::registerMatchers(MatchFinder *Finder) {
const auto DoWithFalse =
doStmt(hasCondition(ignoringImpCasts(
anyOf(cxxBoolLiteral(equals(false)), integerLiteral(equals(0)),
cxxNullPtrLiteralExpr(), gnuNullExpr()))),
equalsBoundNode("closestLoop"));
Finder->addMatcher(
continueStmt(
hasAncestor(stmt(anyOf(forStmt(), whileStmt(), cxxForRangeStmt(),
doStmt(), switchStmt()))
.bind("closestLoop")),
hasAncestor(DoWithFalse))
.bind("continue"),
this);
}
void TerminatingContinueCheck::check(const MatchFinder::MatchResult &Result) {
const auto *ContStmt = Result.Nodes.getNodeAs<ContinueStmt>("continue");
auto Diag =
diag(ContStmt->getBeginLoc(),
"'continue' in loop with false condition is equivalent to 'break'")
<< tooling::fixit::createReplacement(*ContStmt, "break");
}
} // namespace clang::tidy::bugprone
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