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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef NET_HTTP2_HPACK_DECODER_HPACK_STRING_DECODER_LISTENER_H_ |
| 6 #define NET_HTTP2_HPACK_DECODER_HPACK_STRING_DECODER_LISTENER_H_ |
| 7 |
| 8 // Defines HpackStringDecoderListener which defines the methods required by an |
| 9 // HpackStringDecoder. Also defines HpackStringDecoderVLoggingListener which |
| 10 // logs before calling another HpackStringDecoderListener implementation. |
| 11 // For now these are only used by tests, so placed in the test namespace. |
| 12 |
| 13 #include <stddef.h> |
| 14 |
| 15 #include "net/base/net_export.h" |
| 16 |
| 17 namespace net { |
| 18 namespace test { |
| 19 |
| 20 // HpackStringDecoder methods require a listener that implements the methods |
| 21 // below, but it is NOT necessary to extend this class because the methods |
| 22 // are templates. |
| 23 class NET_EXPORT_PRIVATE HpackStringDecoderListener { |
| 24 public: |
| 25 virtual ~HpackStringDecoderListener() {} |
| 26 |
| 27 // Called at the start of decoding an HPACK string. The encoded length of the |
| 28 // string is |len| bytes, which may be zero. The string is Huffman encoded |
| 29 // if huffman_encoded is true, else it is plain text (i.e. the encoded length |
| 30 // is then the plain text length). |
| 31 virtual void OnStringStart(bool huffman_encoded, size_t len) = 0; |
| 32 |
| 33 // Called when some data is available, or once when the string length is zero |
| 34 // (to simplify the decoder, it doesn't have a special case for len==0). |
| 35 virtual void OnStringData(const char* data, size_t len) = 0; |
| 36 |
| 37 // Called after OnStringData has provided all of the encoded bytes of the |
| 38 // string. |
| 39 virtual void OnStringEnd() = 0; |
| 40 }; |
| 41 |
| 42 class NET_EXPORT_PRIVATE HpackStringDecoderVLoggingListener |
| 43 : public HpackStringDecoderListener { |
| 44 public: |
| 45 HpackStringDecoderVLoggingListener() : wrapped_(nullptr) {} |
| 46 explicit HpackStringDecoderVLoggingListener( |
| 47 HpackStringDecoderListener* wrapped) |
| 48 : wrapped_(wrapped) {} |
| 49 ~HpackStringDecoderVLoggingListener() override {} |
| 50 |
| 51 void OnStringStart(bool huffman_encoded, size_t len) override; |
| 52 void OnStringData(const char* data, size_t len) override; |
| 53 void OnStringEnd() override; |
| 54 |
| 55 private: |
| 56 HpackStringDecoderListener* const wrapped_; |
| 57 }; |
| 58 |
| 59 } // namespace test |
| 60 } // namespace net |
| 61 |
| 62 #endif // NET_HTTP2_HPACK_DECODER_HPACK_STRING_DECODER_LISTENER_H_ |
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