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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"
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(qualType(hasCanonicalType(
hasDeclaration(cxxRecordDecl(isSameOrDerivedFrom(
hasName("std::exception")))))))))),
has(expr(unless(cxxUnresolvedConstructExpr()))),
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->getSubExpr()->getLocStart(), "throwing an exception whose "
"type %0 is not derived from "
"'std::exception'")
<< BadThrow->getSubExpr()->getType() << 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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