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//===--- SpecialMemberFunctionsCheck.h - clang-tidy--------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SPECIAL_MEMBER_FUNCTIONS_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SPECIAL_MEMBER_FUNCTIONS_H
#include "../ClangTidy.h"
#include "llvm/ADT/DenseMapInfo.h"
namespace clang {
namespace tidy {
namespace cppcoreguidelines {
/// Checks for classes where some, but not all, of the special member functions
/// are defined.
///
/// For the user-facing documentation see:
/// http://clang.llvm.org/extra/clang-tidy/checks/cppcoreguidelines-special-member-functions.html
class SpecialMemberFunctionsCheck : public ClangTidyCheck {
public:
SpecialMemberFunctionsCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
void onEndOfTranslationUnit() override;
enum class SpecialMemberFunctionKind : uint8_t {
Destructor,
CopyConstructor,
CopyAssignment,
MoveConstructor,
MoveAssignment
};
using ClassDefId = std::pair<SourceLocation, std::string>;
using ClassDefiningSpecialMembersMap =
llvm::DenseMap<ClassDefId,
llvm::SmallVector<SpecialMemberFunctionKind, 5>>;
private:
ClassDefiningSpecialMembersMap ClassWithSpecialMembers;
};
} // namespace cppcoreguidelines
} // namespace tidy
} // namespace clang
namespace llvm {
/// Specialisation of DenseMapInfo to allow ClassDefId objects in DenseMaps
/// FIXME: Move this to the corresponding cpp file as is done for
/// clang-tidy/readability/IdentifierNamingCheck.cpp.
template <>
struct DenseMapInfo<
clang::tidy::cppcoreguidelines::SpecialMemberFunctionsCheck::ClassDefId> {
using ClassDefId =
clang::tidy::cppcoreguidelines::SpecialMemberFunctionsCheck::ClassDefId;
static inline ClassDefId getEmptyKey() {
return ClassDefId(
clang::SourceLocation::getFromRawEncoding(static_cast<unsigned>(-1)),
"EMPTY");
}
static inline ClassDefId getTombstoneKey() {
return ClassDefId(
clang::SourceLocation::getFromRawEncoding(static_cast<unsigned>(-2)),
"TOMBSTONE");
}
static unsigned getHashValue(ClassDefId Val) {
assert(Val != getEmptyKey() && "Cannot hash the empty key!");
assert(Val != getTombstoneKey() && "Cannot hash the tombstone key!");
std::hash<ClassDefId::second_type> SecondHash;
return Val.first.getRawEncoding() + SecondHash(Val.second);
}
static bool isEqual(ClassDefId LHS, ClassDefId RHS) {
if (RHS == getEmptyKey())
return LHS == getEmptyKey();
if (RHS == getTombstoneKey())
return LHS == getTombstoneKey();
return LHS == RHS;
}
};
} // namespace llvm
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SPECIAL_MEMBER_FUNCTIONS_H
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