forked from OSchip/llvm-project
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
|
//===--- TriviallyDestructibleCheck.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 "TriviallyDestructibleCheck.h"
|
||
|
|
#include "../utils/LexerUtils.h"
|
||
|
|
#include "../utils/Matchers.h"
|
||
|
|
#include "clang/AST/ASTContext.h"
|
||
|
|
#include "clang/ASTMatchers/ASTMatchFinder.h"
|
||
|
|
|
||
|
|
using namespace clang::ast_matchers;
|
||
|
|
using namespace clang::ast_matchers::internal;
|
||
|
|
using namespace clang::tidy::matchers;
|
||
|
|
|
||
|
|
namespace clang {
|
||
|
|
namespace tidy {
|
||
|
|
namespace performance {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
AST_MATCHER(Decl, isFirstDecl) { return Node.isFirstDecl(); }
|
||
|
|
|
||
|
|
AST_MATCHER_P(CXXRecordDecl, hasBase, Matcher<QualType>, InnerMatcher) {
|
||
|
|
for (const CXXBaseSpecifier &BaseSpec : Node.bases()) {
|
||
|
|
QualType BaseType = BaseSpec.getType();
|
||
|
|
if (InnerMatcher.matches(BaseType, Finder, Builder))
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
void TriviallyDestructibleCheck::registerMatchers(MatchFinder *Finder) {
|
||
|
|
Finder->addMatcher(
|
||
|
|
cxxDestructorDecl(
|
||
|
|
isDefaulted(),
|
||
|
|
unless(anyOf(isFirstDecl(), isVirtual(),
|
||
|
|
ofClass(cxxRecordDecl(
|
||
|
|
anyOf(hasBase(unless(isTriviallyDestructible())),
|
||
|
|
has(fieldDecl(unless(
|
||
|
|
hasType(isTriviallyDestructible()))))))))))
|
||
|
|
.bind("decl"),
|
||
|
|
this);
|
||
|
|
}
|
||
|
|
|
||
|
|
void TriviallyDestructibleCheck::check(const MatchFinder::MatchResult &Result) {
|
||
|
|
const auto *MatchedDecl = Result.Nodes.getNodeAs<CXXDestructorDecl>("decl");
|
||
|
|
|
||
|
|
// Get locations of both first and out-of-line declarations.
|
||
|
|
SourceManager &SM = *Result.SourceManager;
|
||
|
|
const auto *FirstDecl = cast<CXXMethodDecl>(MatchedDecl->getFirstDecl());
|
||
|
|
const SourceLocation FirstDeclEnd = utils::lexer::findNextTerminator(
|
||
|
|
FirstDecl->getEndLoc(), SM, getLangOpts());
|
||
|
|
const CharSourceRange SecondDeclRange = CharSourceRange::getTokenRange(
|
||
|
|
MatchedDecl->getBeginLoc(),
|
||
|
|
utils::lexer::findNextTerminator(MatchedDecl->getEndLoc(), SM,
|
||
|
|
getLangOpts()));
|
||
|
|
if (FirstDeclEnd.isInvalid() || SecondDeclRange.isInvalid())
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Report diagnostic.
|
||
|
|
diag(FirstDecl->getLocation(),
|
||
|
|
"class %0 can be made trivially destructible by defaulting the "
|
||
|
|
"destructor on its first declaration")
|
||
|
|
<< FirstDecl->getParent()
|
||
|
|
<< FixItHint::CreateInsertion(FirstDeclEnd, " = default")
|
||
|
|
<< FixItHint::CreateRemoval(SecondDeclRange);
|
||
|
|
diag(MatchedDecl->getLocation(), "destructor definition is here",
|
||
|
|
DiagnosticIDs::Note);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace performance
|
||
|
|
} // namespace tidy
|
||
|
|
} // namespace clang
|