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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsAbUtils_h__
#define nsAbUtils_h__

#include "nsMemory.h"

/*
 * Wrapper class to automatically free an array of
 * char* when class goes out of scope
 */
class CharPtrArrayGuard {
 public:
  explicit CharPtrArrayGuard(bool freeElements = true)
      : mFreeElements(freeElements), mArray(0), mSize(0) {}

  ~CharPtrArrayGuard() { Free(); }

  char* operator[](int i) { return mArray[i]; }

  uint32_t* GetSizeAddr(void) { return &mSize; }

  uint32_t GetSize(void) { return mSize; }

  char*** GetArrayAddr(void) { return &mArray; }

  const char** GetArray(void) { return (const char**)mArray; }

 public:
 private:
  bool mFreeElements;
  char** mArray;
  uint32_t mSize;

  void Free() {
    if (!mArray) return;

    if (mFreeElements)
      NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(mSize, mArray);
    else {
      free(mArray);
    }
  }
};

/*
 * Wrapper class to automatically free an array of
 * char16_t* when class goes out of scope
 */
class PRUnicharPtrArrayGuard {
 public:
  explicit PRUnicharPtrArrayGuard(bool freeElements = true)
      : mFreeElements(freeElements), mArray(0), mSize(0) {}

  ~PRUnicharPtrArrayGuard() { Free(); }

  char16_t* operator[](int i) { return mArray[i]; }

  uint32_t* GetSizeAddr(void) { return &mSize; }

  uint32_t GetSize(void) { return mSize; }

  char16_t*** GetArrayAddr(void) { return &mArray; }

  const char16_t** GetArray(void) { return (const char16_t**)mArray; }

 public:
 private:
  bool mFreeElements;
  char16_t** mArray;
  uint32_t mSize;
  void Free() {
    if (!mArray) return;

    if (mFreeElements)
      NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(mSize, mArray);
    else {
      free(mArray);
    }
  }
};

#endif /* nsAbUtils_h__ */