| // 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 |