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Util.h
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <algorithm>
#include <memory>
#include <utility>
#define CHECK(cond, ...) \
do { \
auto cond_eval = (cond); \
if (!cond_eval) { \
fprintf(stderr, "%s:%d CHECK(%s) failed.", __FILE__, __LINE__, #cond); \
fprintf(stderr, " " __VA_ARGS__); \
fprintf(stderr, "\n"); \
} \
} while (0)
#define UNCOPYABLE(klass) \
klass(const klass&) = delete; \
klass& operator=(const klass&) = delete;
#define MOVABLE(klass) \
klass(klass&&) = default; \
klass& operator=(klass&&) = default;
#ifdef __GNUC__
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
/**
* Insert into the proper location in a sorted container.
*/
template <class Container, class T, class Compare>
void insert_sorted(Container& c, const T& e, Compare comp) {
c.insert(std::lower_bound(c.begin(), c.end(), e, comp), e);
}
template <typename T>
struct fake_dependency : public std::false_type {};
#define DISALLOW_DEFAULT_COMPARATOR(klass) \
namespace std { \
template <typename T, typename A> \
class map<const klass*, T, std::less<const klass*>, A> { \
static_assert(fake_dependency<T>::value, \
#klass \
" must not use default pointer comparison in std::map"); \
}; \
template <typename T, typename A> \
class multimap<const klass*, T, std::less<const klass*>, A> { \
static_assert( \
fake_dependency<T>::value, \
#klass " must not use default pointer comparison in std::multimap"); \
}; \
template <typename A> \
class set<const klass*, std::less<const klass*>, A> { \
static_assert(fake_dependency<A>::value, \
#klass \
" must not use default pointer comparison in std::set"); \
}; \
template <typename A> \
class multiset<const klass*, std::less<const klass*>, A> { \
static_assert( \
fake_dependency<A>::value, \
#klass " must not use default pointer comparison in std::multiset"); \
}; \
\
template <typename T, typename A> \
class map<klass*, T, std::less<klass*>, A> { \
static_assert(fake_dependency<T>::value, \
#klass \
" must not use default pointer comparison in std::map"); \
}; \
template <typename T, typename A> \
class multimap<klass*, T, std::less<klass*>, A> { \
static_assert( \
fake_dependency<T>::value, \
#klass " must not use default pointer comparison in std::multimap"); \
}; \
template <typename A> \
class set<klass*, std::less<klass*>, A> { \
static_assert(fake_dependency<A>::value, \
#klass \
" must not use default pointer comparison in std::set"); \
}; \
template <typename A> \
class multiset<klass*, std::less<klass*>, A> { \
static_assert( \
fake_dependency<A>::value, \
#klass " must not use default pointer comparison in std::multiset"); \
}; \
}
#ifdef __GNUC__
#define PACKED(class_to_pack) class_to_pack __attribute__((packed))
#elif _MSC_VER
#define PACKED(class_to_pack) \
__pragma(pack(push, 1)) class_to_pack __pragma(pack(pop))
#else
#error "Please define PACKED"
#endif
#ifdef _MSC_VER
#include <BaseTsd.h>
using ssize_t = SSIZE_T;
#endif
#if defined(__clang__) || defined (__GNUC__)
# define NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
#else
# define NO_SANITIZE_ADDRESS
#endif