forked from OSchip/llvm-project
70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
//===--- DeletedDefaultCheck.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 "DeletedDefaultCheck.h"
|
|
#include "clang/AST/ASTContext.h"
|
|
#include "clang/ASTMatchers/ASTMatchFinder.h"
|
|
|
|
using namespace clang::ast_matchers;
|
|
|
|
namespace clang {
|
|
namespace tidy {
|
|
namespace readability {
|
|
|
|
void DeletedDefaultCheck::registerMatchers(MatchFinder *Finder) {
|
|
// We match constructors/assignment operators that are:
|
|
// - explicitly marked '= default'
|
|
// - actually deleted
|
|
// - not in template instantiation.
|
|
// We bind the declaration to "method-decl" and also to "constructor" when
|
|
// it is a constructor.
|
|
|
|
Finder->addMatcher(
|
|
cxxMethodDecl(anyOf(cxxConstructorDecl().bind("constructor"),
|
|
isCopyAssignmentOperator(),
|
|
isMoveAssignmentOperator()),
|
|
isDefaulted(), unless(isImplicit()), isDeleted(),
|
|
unless(isInstantiated()))
|
|
.bind("method-decl"),
|
|
this);
|
|
}
|
|
|
|
void DeletedDefaultCheck::check(const MatchFinder::MatchResult &Result) {
|
|
const StringRef Message = "%0 is explicitly defaulted but implicitly "
|
|
"deleted, probably because %1; definition can "
|
|
"either be removed or explicitly deleted";
|
|
if (const auto *Constructor =
|
|
Result.Nodes.getNodeAs<CXXConstructorDecl>("constructor")) {
|
|
auto Diag = diag(Constructor->getLocStart(), Message);
|
|
if (Constructor->isDefaultConstructor()) {
|
|
Diag << "default constructor"
|
|
<< "a non-static data member or a base class is lacking a default "
|
|
"constructor";
|
|
} else if (Constructor->isCopyConstructor()) {
|
|
Diag << "copy constructor"
|
|
<< "a non-static data member or a base class is not copyable";
|
|
} else if (Constructor->isMoveConstructor()) {
|
|
Diag << "move constructor"
|
|
<< "a non-static data member or a base class is neither copyable "
|
|
"nor movable";
|
|
}
|
|
} else if (const auto *Assignment =
|
|
Result.Nodes.getNodeAs<CXXMethodDecl>("method-decl")) {
|
|
diag(Assignment->getLocStart(), Message)
|
|
<< (Assignment->isCopyAssignmentOperator() ? "copy assignment operator"
|
|
: "move assignment operator")
|
|
<< "a base class or a non-static data member is not assignable, e.g. "
|
|
"because the latter is marked 'const'";
|
|
}
|
|
}
|
|
|
|
} // namespace readability
|
|
} // namespace tidy
|
|
} // namespace clang
|