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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MemMoveAnnotation_h__
#define MemMoveAnnotation_h__
#include "CustomMatchers.h"
#include "CustomTypeAnnotation.h"
#include "Utils.h"
#include <unordered_set>
class MemMoveAnnotation final : public CustomTypeAnnotation {
public:
MemMoveAnnotation()
: CustomTypeAnnotation(moz_non_memmovable, "non-memmove()able") {}
virtual ~MemMoveAnnotation() {}
protected:
std::string getImplicitReason(const TagDecl *D) const override {
// Annotate everything in ::std, with a few exceptions; see bug
// 1201314 for discussion.
if (getDeclarationNamespace(D) == "std") {
// This doesn't check that it's really ::std::pair and not
// ::std::something_else::pair, but should be good enough.
StringRef Name = getNameChecked(D);
if (isNameExcepted(Name.data())) {
return "";
}
return "it is an stl-provided type not guaranteed to be memmove-able";
}
return "";
}
private:
bool isNameExcepted(const char *Name) const {
static std::unordered_set<std::string> NamesSet = {
{"pair"},
{"atomic"},
// libstdc++ specific names
{"__atomic_base"},
{"atomic_bool"},
{"__cxx_atomic_impl"},
{"__cxx_atomic_base_impl"},
{"__pair_base"},
// MSVCRT specific names
{"_Atomic_impl"},
{"_Atomic_base"},
{"_Atomic_bool"},
{"_Atomic_char"},
{"_Atomic_schar"},
{"_Atomic_uchar"},
{"_Atomic_char16_t"},
{"_Atomic_char32_t"},
{"_Atomic_wchar_t"},
{"_Atomic_short"},
{"_Atomic_ushort"},
{"_Atomic_int"},
{"_Atomic_uint"},
{"_Atomic_long"},
{"_Atomic_ulong"},
{"_Atomic_llong"},
{"_Atomic_ullong"},
{"_Atomic_address"},
// MSVCRT 2019
{"_Atomic_integral"},
{"_Atomic_integral_facade"},
{"_Atomic_padded"},
{"_Atomic_pointer"},
{"_Atomic_storage"}};
return NamesSet.find(Name) != NamesSet.end();
}
};
extern MemMoveAnnotation NonMemMovable;
#endif