ThrowKeywordMissingCheck.cpp
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//===--- ThrowKeywordMissingCheck.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 "ThrowKeywordMissingCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace bugprone {
void ThrowKeywordMissingCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus)
return;
auto CtorInitializerList =
cxxConstructorDecl(hasAnyConstructorInitializer(anything()));
Finder->addMatcher(
expr(anyOf(cxxFunctionalCastExpr(), cxxBindTemporaryExpr(),
cxxTemporaryObjectExpr()),
hasType(cxxRecordDecl(
isSameOrDerivedFrom(matchesName("[Ee]xception|EXCEPTION")))),
unless(anyOf(hasAncestor(stmt(
anyOf(cxxThrowExpr(), callExpr(), returnStmt()))),
hasAncestor(varDecl()),
allOf(hasAncestor(CtorInitializerList),
unless(hasAncestor(cxxCatchStmt()))))))
.bind("temporary-exception-not-thrown"),
this);
}
void ThrowKeywordMissingCheck::check(const MatchFinder::MatchResult &Result) {
const auto *TemporaryExpr =
Result.Nodes.getNodeAs<Expr>("temporary-exception-not-thrown");
diag(TemporaryExpr->getBeginLoc(), "suspicious exception object created but "
"not thrown; did you mean 'throw %0'?")
<< TemporaryExpr->getType().getBaseTypeIdentifier()->getName();
}
} // namespace bugprone
} // namespace tidy
} // namespace clang