clang-tools  9.0.0
ThrowKeywordMissingCheck.cpp
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1 //===--- ThrowKeywordMissingCheck.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 
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang {
16 namespace tidy {
17 namespace bugprone {
18 
19 void ThrowKeywordMissingCheck::registerMatchers(MatchFinder *Finder) {
20  if (!getLangOpts().CPlusPlus)
21  return;
22 
23  auto CtorInitializerList =
24  cxxConstructorDecl(hasAnyConstructorInitializer(anything()));
25 
26  Finder->addMatcher(
27  expr(anyOf(cxxFunctionalCastExpr(), cxxBindTemporaryExpr(),
28  cxxTemporaryObjectExpr()),
29  hasType(cxxRecordDecl(
30  isSameOrDerivedFrom(matchesName("[Ee]xception|EXCEPTION")))),
31  unless(anyOf(hasAncestor(stmt(
32  anyOf(cxxThrowExpr(), callExpr(), returnStmt()))),
33  hasAncestor(varDecl()),
34  allOf(hasAncestor(CtorInitializerList),
35  unless(hasAncestor(cxxCatchStmt()))))))
36  .bind("temporary-exception-not-thrown"),
37  this);
38 }
39 
40 void ThrowKeywordMissingCheck::check(const MatchFinder::MatchResult &Result) {
41  const auto *TemporaryExpr =
42  Result.Nodes.getNodeAs<Expr>("temporary-exception-not-thrown");
43 
44  diag(TemporaryExpr->getBeginLoc(), "suspicious exception object created but "
45  "not thrown; did you mean 'throw %0'?")
46  << TemporaryExpr->getType().getBaseTypeIdentifier()->getName();
47 }
48 
49 } // namespace bugprone
50 } // namespace tidy
51 } // namespace clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: Rename.cpp:36