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// Copyright 2014 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/logging.h"
#include "base/memory/scoped_ptr.h"
#include "content/browser/indexed_db/leveldb/leveldb_iterator_impl.h"
static leveldb::Slice MakeSlice(const base::StringPiece& s) {
return leveldb::Slice(s.begin(), s.size());
}
static base::StringPiece MakeStringPiece(const leveldb::Slice& s) {
return base::StringPiece(s.data(), s.size());
}
namespace content {
LevelDBIteratorImpl::~LevelDBIteratorImpl() {
}
LevelDBIteratorImpl::LevelDBIteratorImpl(scoped_ptr<leveldb::Iterator> it)
: iterator_(it.Pass()) {
}
void LevelDBIteratorImpl::CheckStatus() {
const leveldb::Status& s = iterator_->status();
if (!s.ok())
LOG(ERROR) << "LevelDB iterator error: " << s.ToString();
}
bool LevelDBIteratorImpl::IsValid() const {
return iterator_->Valid();
}
leveldb::Status LevelDBIteratorImpl::SeekToLast() {
iterator_->SeekToLast();
CheckStatus();
return iterator_->status();
}
leveldb::Status LevelDBIteratorImpl::Seek(const base::StringPiece& target) {
iterator_->Seek(MakeSlice(target));
CheckStatus();
return iterator_->status();
}
leveldb::Status LevelDBIteratorImpl::Next() {
DCHECK(IsValid());
iterator_->Next();
CheckStatus();
return iterator_->status();
}
leveldb::Status LevelDBIteratorImpl::Prev() {
DCHECK(IsValid());
iterator_->Prev();
CheckStatus();
return iterator_->status();
}
base::StringPiece LevelDBIteratorImpl::Key() const {
DCHECK(IsValid());
return MakeStringPiece(iterator_->key());
}
base::StringPiece LevelDBIteratorImpl::Value() const {
DCHECK(IsValid());
return MakeStringPiece(iterator_->value());
}
} // namespace content
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