clang-tools 8.0.0

TerminatingContinueCheck.cpp
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1 //===--- TerminatingContinueCheck.cpp - clang-tidy-------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "TerminatingContinueCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13 #include "clang/Lex/Lexer.h"
14 #include "clang/Tooling/FixIt.h"
15
16 using namespace clang::ast_matchers;
17
18 namespace clang {
19 namespace tidy {
20 namespace bugprone {
21
22 void TerminatingContinueCheck::registerMatchers(MatchFinder *Finder) {
23 const auto doWithFalse =
24 doStmt(hasCondition(ignoringImpCasts(
25 anyOf(cxxBoolLiteral(equals(false)), integerLiteral(equals(0)),
26 cxxNullPtrLiteralExpr(), gnuNullExpr()))),
27 equalsBoundNode("closestLoop"));
28
29 Finder->addMatcher(
30 continueStmt(hasAncestor(stmt(anyOf(forStmt(), whileStmt(),
31 cxxForRangeStmt(), doStmt()))
32 .bind("closestLoop")),
33 hasAncestor(doWithFalse))
34 .bind("continue"),
35 this);
36 }
37
38 void TerminatingContinueCheck::check(const MatchFinder::MatchResult &Result) {
39 const auto *ContStmt = Result.Nodes.getNodeAs<ContinueStmt>("continue");
40
41 auto Diag =
42 diag(ContStmt->getBeginLoc(),
43 "'continue' in loop with false condition is equivalent to 'break'")
44 << tooling::fixit::createReplacement(*ContStmt, "break");
45 }
46
47 } // namespace bugprone
48 } // namespace tidy
49 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:15
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18
TerminatingContinueCheck.h