//===--- Errors.h - Demangling library error handling -----------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file exists because not every client links to libswiftCore (the
// runtime), so calling swift::fatalError() or swift::warning() from within
// the demangler is not an option.
//
//===----------------------------------------------------------------------===//

#ifndef SWIFT_DEMANGLING_ERRORS_H
#define SWIFT_DEMANGLING_ERRORS_H

#include "swift/Demangling/NamespaceMacros.h"
#include <inttypes.h>
#include <stdarg.h>

#ifndef SWIFT_FORMAT
// SWIFT_FORMAT(fmt,first) marks a function as taking a format string argument
// at argument `fmt`, with the first argument for the format string as `first`.
#if __has_attribute(format)
#define SWIFT_FORMAT(fmt, first) __attribute__((format(printf, fmt, first)))
#else
#define SWIFT_FORMAT(fmt, first)
#endif
#endif

#ifndef SWIFT_VFORMAT
// SWIFT_VFORMAT(fmt) marks a function as taking a format string argument at
// argument `fmt`, with the arguments in a `va_list`.
#if __has_attribute(format)
#define SWIFT_VFORMAT(fmt) __attribute__((format(printf, fmt, 0)))
#else
#define SWIFT_VFORMAT(fmt)
#endif
#endif

#ifndef SWIFT_NORETURN
#if __has_attribute(noreturn)
#define SWIFT_NORETURN __attribute__((__noreturn__))
#else
#define SWIFT_NORETURN
#endif
#endif

namespace swift {
namespace Demangle {
SWIFT_BEGIN_INLINE_NAMESPACE

SWIFT_NORETURN SWIFT_FORMAT(2, 3) void fatal(uint32_t flags, const char *format,
                                             ...);
SWIFT_FORMAT(2, 3) void warn(uint32_t flags, const char *format, ...);

SWIFT_NORETURN SWIFT_VFORMAT(2) void fatalv(uint32_t flags, const char *format,
                                            va_list val);
SWIFT_VFORMAT(2) void warnv(uint32_t flags, const char *format, va_list val);

SWIFT_END_INLINE_NAMESPACE
} // end namespace Demangle
} // end namespace swift

#endif // SWIFT_DEMANGLING_DEMANGLE_H