/*
 * Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef WM_UTIL_HPP
#define WM_UTIL_HPP

#include <functional>
#include <thread>
#include <vector>

#include <sys/poll.h>

#ifndef DO_NOT_USE_AFB
extern "C" {
#include <afb/afb-binding.h>
};
#endif

#define CONCAT_(X, Y) X##Y
#define CONCAT(X, Y) CONCAT_(X, Y)

#ifdef __GNUC__
#define ATTR_FORMAT(stringindex, firsttocheck) \
   __attribute__((format(printf, stringindex, firsttocheck)))
#define ATTR_NORETURN __attribute__((noreturn))
#else
#define ATTR_FORMAT(stringindex, firsttocheck)
#define ATTR_NORETURN
#endif

#ifdef AFB_BINDING_VERSION
#define lognotice(...) AFB_NOTICE(__VA_ARGS__)
#define logerror(...) AFB_ERROR(__VA_ARGS__)
#define fatal(...)            \
   do {                       \
      AFB_ERROR(__VA_ARGS__); \
      abort();                \
   } while (0)
#else
#define lognotice(...)
#define logerror(...)
#define fatal(...)            \
   do {                       \
      abort();                \
   } while (0)
#endif

#ifdef DEBUG_OUTPUT
#ifdef AFB_BINDING_VERSION
#define logdebug(...) AFB_DEBUG(__VA_ARGS__)
#else
#define logdebug(...)
#endif
#else
#define logdebug(...)
#endif

#ifndef SCOPE_TRACING
#define ST()
#define STN(N)
#else
#define ST() \
    ScopeTrace __attribute__((unused)) CONCAT(trace_scope_, __LINE__)(__func__)
#define STN(N) \
    ScopeTrace __attribute__((unused)) CONCAT(named_trace_scope_, __LINE__)(#N)

struct ScopeTrace {
   thread_local static int indent;
   char const *f{};
   explicit ScopeTrace(char const *func);
   ~ScopeTrace();
};
#endif

//      _                   _                 _                       __     _
//  ___| |_ _ __ _   _  ___| |_   _   _ _ __ (_) __ _ _   _  ___     / _| __| |
// / __| __| '__| | | |/ __| __| | | | | '_ \| |/ _` | | | |/ _ \   | |_ / _` |
// \__ \ |_| |  | |_| | (__| |_  | |_| | | | | | (_| | |_| |  __/   |  _| (_| |
// |___/\__|_|   \__,_|\___|\__|  \__,_|_| |_|_|\__, |\__,_|\___|___|_|  \__,_|
//                                                 |_|         |_____|
struct unique_fd {
   int fd{-1};
   unique_fd() = default;
   explicit unique_fd(int f) : fd{f} {}
   operator int() const { return fd; }
   ~unique_fd();
   unique_fd(unique_fd const &) = delete;
   unique_fd &operator=(unique_fd const &) = delete;
   unique_fd(unique_fd &&o) : fd(o.fd) { o.fd = -1; }
   unique_fd &operator=(unique_fd &&o) {
      std::swap(this->fd, o.fd);
      return *this;
   }
};

#endif  // !WM_UTIL_HPP