clang-tools 8.0.0

ThrowKeywordMissingCheck.cpp
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1 //===--- ThrowKeywordMissingCheck.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 "ThrowKeywordMissingCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13
14 using namespace clang::ast_matchers;
15
16 namespace clang {
17 namespace tidy {
18 namespace bugprone {
19
20 void ThrowKeywordMissingCheck::registerMatchers(MatchFinder *Finder) {
21 if (!getLangOpts().CPlusPlus)
22 return;
23
24 auto CtorInitializerList =
25 cxxConstructorDecl(hasAnyConstructorInitializer(anything()));
26
27 Finder->addMatcher(
28 expr(anyOf(cxxFunctionalCastExpr(), cxxBindTemporaryExpr(),
29 cxxTemporaryObjectExpr()),
30 hasType(cxxRecordDecl(
31 isSameOrDerivedFrom(matchesName("[Ee]xception|EXCEPTION")))),
32 unless(anyOf(hasAncestor(stmt(
33 anyOf(cxxThrowExpr(), callExpr(), returnStmt()))),
34 hasAncestor(varDecl()),
35 allOf(hasAncestor(CtorInitializerList),
36 unless(hasAncestor(cxxCatchStmt()))))))
37 .bind("temporary-exception-not-thrown"),
38 this);
39 }
40
41 void ThrowKeywordMissingCheck::check(const MatchFinder::MatchResult &Result) {
42 const auto *TemporaryExpr =
43 Result.Nodes.getNodeAs<Expr>("temporary-exception-not-thrown");
44
45 diag(TemporaryExpr->getBeginLoc(), "suspicious exception object created but "
46 "not thrown; did you mean 'throw %0'?")
47 << TemporaryExpr->getType().getBaseTypeIdentifier()->getName();
48 }
49
50 } // namespace bugprone
51 } // namespace tidy
52 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:15
ThrowKeywordMissingCheck.h
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18