// Copyright 2021 Google LLC
//
// 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
//
//     https://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 THIRD_PARTY_NEARBY_SHARING_INTERNAL_BASE_UTF_STRING_CONFIGURATION_H_
#define THIRD_PARTY_NEARBY_SHARING_INTERNAL_BASE_UTF_STRING_CONFIGURATION_H_

// A set of macros to use for platform detection.
#if defined(__native_client__)
// __native_client__ must be first, so that other OS_ defines are not set.
#define OS_NACL 1
#define OS_NACL_SFI
#elif defined(ANDROID)
#define OS_ANDROID 1
#elif defined(__APPLE__)
// Only include TargetConditionals after testing ANDROID as some Android builds
// on the Mac have this header available and it's not needed unless the target
// is really an Apple platform.
#include <TargetConditionals.h>
#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#define OS_IOS 1
#else
#define OS_MAC 1
#endif  // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#elif defined(__linux__)
#if !defined(OS_CHROMEOS)
// Do not define OS_LINUX on Chrome OS build.
// The OS_CHROMEOS macro is defined in GN.
#define OS_LINUX 1
#endif  // !defined(OS_CHROMEOS)
#if defined(__GLIBC__) && !defined(__UCLIBC__)
// We really are using glibc, not uClibc pretending to be glibc.
#define LIBC_GLIBC 1
#endif
#elif defined(_WIN32)
#define OS_WIN 1
#elif defined(__Fuchsia__)
#define OS_FUCHSIA 1
#elif defined(__FreeBSD__)
#define OS_FREEBSD 1
#elif defined(__NetBSD__)
#define OS_NETBSD 1
#elif defined(__OpenBSD__)
#define OS_OPENBSD 1
#elif defined(__sun)
#define OS_SOLARIS 1
#elif defined(__QNXNTO__)
#define OS_QNX 1
#elif defined(_AIX)
#define OS_AIX 1
#elif defined(__asmjs__) || defined(__wasm__)
#define OS_ASMJS 1
#elif defined(__MVS__)
#define OS_ZOS 1
#else
#error Please add support for your platform in build/build_config.h
#endif
// NOTE: Adding a new port? Please follow
// https://chromium.googlesource.com/chromium/src/+/main/docs/new_port_policy.md

#if defined(OS_MAC) || defined(OS_IOS)
#define OS_APPLE 1
#endif

// For access to standard BSD features, use OS_BSD instead of a
// more specific macro.
#if defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_OPENBSD)
#define OS_BSD 1
#endif

// For access to standard POSIX features, use OS_POSIX instead of a
// more specific macro.
#if defined(OS_AIX) || defined(OS_ANDROID) || defined(OS_ASMJS) ||  \
    defined(OS_FREEBSD) || defined(OS_IOS) || defined(OS_LINUX) ||  \
    defined(OS_CHROMEOS) || defined(OS_MAC) || defined(OS_NACL) ||  \
    defined(OS_NETBSD) || defined(OS_OPENBSD) || defined(OS_QNX) || \
    defined(OS_SOLARIS) || defined(OS_ZOS)
#define OS_POSIX 1
#endif

// Compiler detection. Note: clang masquerades as GCC on POSIX and as MSVC on
// Windows.
#if defined(__GNUC__)
#define COMPILER_GCC 1
#elif defined(_MSC_VER)
#define COMPILER_MSVC 1
#else
#error Please add support for your compiler in build/build_config.h
#endif

// Type detection for wchar_t.
#if defined(OS_WIN)
#define WCHAR_T_IS_UTF16
#elif defined(OS_FUCHSIA)
#define WCHAR_T_IS_UTF32
#elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \
    (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
#define WCHAR_T_IS_UTF32
#elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \
    (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
// compile in this mode (in particular, Chrome doesn't). This is intended for
// other projects using base who manage their own dependencies and make sure
// short wchar works for them.
#define WCHAR_T_IS_UTF16
#else
#error Please add support for your compiler in build/build_config.h
#endif

#endif  // THIRD_PARTY_NEARBY_SHARING_INTERNAL_BASE_UTF_STRING_CONFIGURATION_H_