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// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include <cstddef>
#include <span>
#include "pw_bytes/span.h"
#include "pw_status/status.h"
#include "pw_status/status_with_size.h"
#include "pw_stream/stream.h"
namespace pw::stream {
// Stream writer which quietly drops all of the data, similar to /dev/null.
class NullWriter final : public Writer {
public:
size_t ConservativeWriteLimit() const override {
// In theory this can sink as much as is addressable, however this way it is
// compliant with pw::StatusWithSize.
return StatusWithSize::max_size();
}
private:
Status DoWrite(ConstByteSpan data) override { return Status::Ok(); }
};
} // namespace pw::stream
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