| 1 | //===--- TerminatingContinueCheck.cpp - clang-tidy-------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "TerminatingContinueCheck.h" |
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| 10 | #include "clang/AST/ASTContext.h" |
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| 11 | #include "clang/ASTMatchers/ASTMatchFinder.h" |
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| 12 | #include "clang/Lex/Lexer.h" |
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| 13 | #include "clang/Tooling/FixIt.h" |
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| 14 | |
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| 15 | using namespace clang::ast_matchers; |
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| 16 | |
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| 17 | namespace clang::tidy::bugprone { |
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| 18 | |
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| 19 | void TerminatingContinueCheck::registerMatchers(MatchFinder *Finder) { |
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| 20 | const auto DoWithFalse = |
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| 21 | doStmt(hasCondition(InnerMatcher: ignoringImpCasts( |
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| 22 | InnerMatcher: anyOf(cxxBoolLiteral(equals(Value: false)), integerLiteral(equals(Value: 0)), |
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| 23 | cxxNullPtrLiteralExpr(), gnuNullExpr()))), |
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| 24 | equalsBoundNode(ID: "closestLoop" )); |
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| 25 | |
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| 26 | Finder->addMatcher( |
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| 27 | NodeMatch: continueStmt( |
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| 28 | hasAncestor(stmt(anyOf(forStmt(), whileStmt(), cxxForRangeStmt(), |
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| 29 | doStmt(), switchStmt())) |
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| 30 | .bind(ID: "closestLoop" )), |
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| 31 | hasAncestor(DoWithFalse)) |
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| 32 | .bind(ID: "continue" ), |
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| 33 | Action: this); |
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| 34 | } |
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| 35 | |
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| 36 | void TerminatingContinueCheck::check(const MatchFinder::MatchResult &Result) { |
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| 37 | const auto *ContStmt = Result.Nodes.getNodeAs<ContinueStmt>(ID: "continue" ); |
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| 38 | |
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| 39 | auto Diag = |
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| 40 | diag(Loc: ContStmt->getBeginLoc(), |
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| 41 | Description: "'continue' in loop with false condition is equivalent to 'break'" ) |
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| 42 | << tooling::fixit::createReplacement(Destination: *ContStmt, Source: "break" ); |
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| 43 | } |
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| 44 | |
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| 45 | } // namespace clang::tidy::bugprone |
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| 46 | |
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