shaka-packager/packager/macros.h

85 lines
2.3 KiB
C

// Copyright 2022 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#ifndef PACKAGER_MACROS_H_
#define PACKAGER_MACROS_H_
#include <type_traits>
#include <absl/log/globals.h>
#include <absl/log/log.h>
/// A macro to disable copying and assignment. Usage:
/// class Foo {
/// private:
/// DISALLOW_COPY_AND_ASSIGN(Foo);
/// }
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&) = delete; \
void operator=(const TypeName&) = delete;
/// A macro to disable all implicit constructors (copy, assignment, and default
/// constructor). Usage:
/// class Foo {
/// private:
/// DISALLOW_IMPLICIT_CONSTRUCTORS(Foo);
/// }
#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
TypeName() = delete; \
DISALLOW_COPY_AND_ASSIGN(TypeName);
/// A macro to declare that you intentionally did not use a parameter. Useful
/// when implementing abstract interfaces.
#define UNUSED(x) (void)(x)
/// A macro to declare that you intentionally did not implement a method.
/// You can use the insertion operator to add specific logs to this.
#define NOTIMPLEMENTED() LOG(ERROR) << "NOTIMPLEMENTED: "
/// AES block size in bytes, regardless of key size.
#define AES_BLOCK_SIZE 16
#define VLOG(verboselevel) \
LOG(LEVEL(static_cast<absl::LogSeverity>(-verboselevel)))
#define VLOG_IS_ON(verboselevel) \
(static_cast<int>(absl::MinLogLevel()) <= -verboselevel)
#ifndef NDEBUG
#define DVLOG(verboselevel) VLOG(verboselevel)
#else
// We need this expression to work with << after it, so this is a simple way to
// turn DVLOG into a no-op in release builds.
#define DVLOG(verboselevel) \
if (false) \
VLOG(verboselevel)
#endif
#if defined(SHARED_LIBRARY_BUILD)
#if defined(_WIN32)
#if defined(SHAKA_IMPLEMENTATION)
#define SHAKA_EXPORT __declspec(dllexport)
#else
#define SHAKA_EXPORT __declspec(dllimport)
#endif // defined(SHAKA_IMPLEMENTATION)
#else // defined(_WIN32)
#if defined(SHAKA_IMPLEMENTATION)
#define SHAKA_EXPORT __attribute__((visibility("default")))
#else
#define SHAKA_EXPORT
#endif
#endif // defined(_WIN32)
#else // defined(SHARED_LIBRARY_BUILD)
#define SHAKA_EXPORT
#endif // defined(SHARED_LIBRARY_BUILD)
#endif // PACKAGER_MACROS_H_