// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/debug/crash_logging.h"

namespace base {
namespace debug {

namespace {

CrashKeyImplementation* g_crash_key_impl = nullptr;

}  // namespace

CrashKeyString* AllocateCrashKeyString(const char name[],
                                       CrashKeySize value_length) {
  if (!g_crash_key_impl)
    return nullptr;

  return g_crash_key_impl->Allocate(name, value_length);
}

void SetCrashKeyString(CrashKeyString* crash_key, base::StringPiece value) {
  if (!g_crash_key_impl || !crash_key)
    return;

  g_crash_key_impl->Set(crash_key, value);
}

void ClearCrashKeyString(CrashKeyString* crash_key) {
  if (!g_crash_key_impl || !crash_key)
    return;

  g_crash_key_impl->Clear(crash_key);
}

BASE_EXPORT void OutputCrashKeysToStream(std::ostream& out) {
  if (!g_crash_key_impl)
    return;

  g_crash_key_impl->OutputCrashKeysToStream(out);
}

ScopedCrashKeyString::ScopedCrashKeyString(CrashKeyString* crash_key,
                                           base::StringPiece value)
    : crash_key_(crash_key) {
  SetCrashKeyString(crash_key_, value);
}

ScopedCrashKeyString::ScopedCrashKeyString(ScopedCrashKeyString&& other)
    : crash_key_(std::exchange(other.crash_key_, nullptr)) {}

ScopedCrashKeyString::~ScopedCrashKeyString() {
  ClearCrashKeyString(crash_key_);
}

void SetCrashKeyImplementation(std::unique_ptr<CrashKeyImplementation> impl) {
  delete g_crash_key_impl;
  g_crash_key_impl = impl.release();
}

}  // namespace debug
}  // namespace base
