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//===--- ExceptionBaseclassCheck.cpp - clang-tidy--------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "ExceptionBaseclassCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include <iostream>
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace hicpp {
void ExceptionBaseclassCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus)
return;
Finder->addMatcher(
cxxThrowExpr(
allOf(
has(expr(unless(hasType(cxxRecordDecl(
isSameOrDerivedFrom(hasName("std::exception"))))))),
eachOf(has(expr(hasType(namedDecl().bind("decl")))), anything())))
.bind("bad_throw"),
this);
}
void ExceptionBaseclassCheck::check(const MatchFinder::MatchResult &Result) {
const auto *BadThrow = Result.Nodes.getNodeAs<CXXThrowExpr>("bad_throw");
diag(BadThrow->getLocStart(),
"throwing an exception whose type is not derived from 'std::exception'")
<< BadThrow->getSourceRange();
const auto *TypeDecl = Result.Nodes.getNodeAs<NamedDecl>("decl");
if (TypeDecl != nullptr)
diag(TypeDecl->getLocStart(), "type defined here", DiagnosticIDs::Note);
}
} // namespace hicpp
} // namespace tidy
} // namespace clang
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