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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* 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 mozStorageBindingParamsArray_h
#define mozStorageBindingParamsArray_h
#include "nsAutoPtr.h"
#include "nsTArray.h"
#include "mozilla/Attributes.h"
#include "mozIStorageBindingParamsArray.h"
namespace mozilla {
namespace storage {
class StorageBaseStatementInternal;
class BindingParamsArray final : public mozIStorageBindingParamsArray
{
typedef nsTArray< nsCOMPtr<mozIStorageBindingParams> > array_type;
~BindingParamsArray() {}
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_MOZISTORAGEBINDINGPARAMSARRAY
explicit BindingParamsArray(StorageBaseStatementInternal *aOwningStatement);
typedef array_type::size_type size_type;
/**
* Locks the array and prevents further modification to it (such as adding
* more elements to it).
*/
void lock();
/**
* @return the pointer to the owning BindingParamsArray.
*/
const StorageBaseStatementInternal *getOwner() const;
/**
* @return the number of elemets the array contains.
*/
size_type length() const { return mArray.Length(); }
class iterator {
public:
iterator(BindingParamsArray *aArray,
uint32_t aIndex)
: mArray(aArray)
, mIndex(aIndex)
{
}
iterator &operator++(int)
{
mIndex++;
return *this;
}
bool operator==(const iterator &aOther) const
{
return mIndex == aOther.mIndex;
}
bool operator!=(const iterator &aOther) const
{
return !(*this == aOther);
}
mozIStorageBindingParams *operator*()
{
NS_ASSERTION(mIndex < mArray->length(),
"Dereferenceing an invalid value!");
return mArray->mArray[mIndex].get();
}
private:
void operator--() { }
BindingParamsArray *mArray;
uint32_t mIndex;
};
/**
* Obtains an iterator pointing to the beginning of the array.
*/
inline iterator begin()
{
NS_ASSERTION(length() != 0,
"Obtaining an iterator to the beginning with no elements!");
return iterator(this, 0);
}
/**
* Obtains an iterator pointing to the end of the array.
*/
inline iterator end()
{
NS_ASSERTION(mLocked,
"Obtaining an iterator to the end when we are not locked!");
return iterator(this, length());
}
private:
nsCOMPtr<StorageBaseStatementInternal> mOwningStatement;
array_type mArray;
bool mLocked;
friend class iterator;
};
} // namespace storage
} // namespace mozilla
#endif // mozStorageBindingParamsArray_h
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