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Side by Side Diff: net/spdy/core/hpack/hpack_huffman_table.h

Issue 2839373002: Implement SPDY_EXPORT and SPDY_EXPORT_PRIVATE macros. (Closed)
Patch Set: Rebase: manually resolve trivial merge conflicts. Created 3 years, 7 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_ 5 #ifndef NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_
6 #define NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_ 6 #define NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 9
10 #include <cstddef> 10 #include <cstddef>
11 #include <vector> 11 #include <vector>
12 12
13 #include "net/base/net_export.h"
14 #include "net/spdy/core/hpack/hpack_constants.h" 13 #include "net/spdy/core/hpack/hpack_constants.h"
14 #include "net/spdy/platform/api/spdy_export.h"
15 #include "net/spdy/platform/api/spdy_string.h" 15 #include "net/spdy/platform/api/spdy_string.h"
16 #include "net/spdy/platform/api/spdy_string_piece.h" 16 #include "net/spdy/platform/api/spdy_string_piece.h"
17 17
18 namespace net { 18 namespace net {
19 19
20 namespace test { 20 namespace test {
21 class HpackHuffmanTablePeer; 21 class HpackHuffmanTablePeer;
22 } // namespace test 22 } // namespace test
23 23
24 class HpackInputStream; 24 class HpackInputStream;
25 class HpackOutputStream; 25 class HpackOutputStream;
26 26
27 // HpackHuffmanTable encodes and decodes string literals using a constructed 27 // HpackHuffmanTable encodes and decodes string literals using a constructed
28 // canonical Huffman code. Once initialized, an instance is read only and 28 // canonical Huffman code. Once initialized, an instance is read only and
29 // may be accessed only through its const interface. 29 // may be accessed only through its const interface.
30 class NET_EXPORT_PRIVATE HpackHuffmanTable { 30 class SPDY_EXPORT_PRIVATE HpackHuffmanTable {
31 public: 31 public:
32 friend class test::HpackHuffmanTablePeer; 32 friend class test::HpackHuffmanTablePeer;
33 33
34 typedef HpackHuffmanSymbol Symbol; 34 typedef HpackHuffmanSymbol Symbol;
35 35
36 // DecodeTables are multilevel indexes on code prefixes. Each table indexes 36 // DecodeTables are multilevel indexes on code prefixes. Each table indexes
37 // a portion of the prefix mapped to DecodeEntry, which in turn either 37 // a portion of the prefix mapped to DecodeEntry, which in turn either
38 // captures a terminal symbol, or points to the next DecodeTable to consult 38 // captures a terminal symbol, or points to the next DecodeTable to consult
39 // with successive portions of the prefix. 39 // with successive portions of the prefix.
40 struct NET_EXPORT_PRIVATE DecodeEntry { 40 struct SPDY_EXPORT_PRIVATE DecodeEntry {
41 DecodeEntry(); 41 DecodeEntry();
42 DecodeEntry(uint8_t next_table_index, uint8_t length, uint16_t symbol_id); 42 DecodeEntry(uint8_t next_table_index, uint8_t length, uint16_t symbol_id);
43 43
44 // The next table to consult. If this is a terminal, 44 // The next table to consult. If this is a terminal,
45 // |next_table_index| will be self-referential. 45 // |next_table_index| will be self-referential.
46 uint8_t next_table_index; 46 uint8_t next_table_index;
47 // Bit-length of terminal code, if this is a terminal. Length of the 47 // Bit-length of terminal code, if this is a terminal. Length of the
48 // longest code having this prefix, if non-terminal. 48 // longest code having this prefix, if non-terminal.
49 uint8_t length; 49 uint8_t length;
50 // Set only for terminal entries. 50 // Set only for terminal entries.
51 uint16_t symbol_id; 51 uint16_t symbol_id;
52 }; 52 };
53 struct NET_EXPORT_PRIVATE DecodeTable { 53 struct SPDY_EXPORT_PRIVATE DecodeTable {
54 // Number of bits indexed by the chain leading to this table. 54 // Number of bits indexed by the chain leading to this table.
55 uint8_t prefix_length; 55 uint8_t prefix_length;
56 // Number of additional prefix bits this table indexes. 56 // Number of additional prefix bits this table indexes.
57 uint8_t indexed_length; 57 uint8_t indexed_length;
58 // Entries are represented as a length |size()| slice into 58 // Entries are represented as a length |size()| slice into
59 // |decode_entries_| beginning at |entries_offset|. 59 // |decode_entries_| beginning at |entries_offset|.
60 size_t entries_offset; 60 size_t entries_offset;
61 // Returns |1 << indexed_length|. 61 // Returns |1 << indexed_length|.
62 size_t size() const; 62 size_t size() const;
63 }; 63 };
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125 uint8_t pad_bits_; 125 uint8_t pad_bits_;
126 126
127 // If initialization fails, preserve the symbol ID which failed validation 127 // If initialization fails, preserve the symbol ID which failed validation
128 // for examination in tests. 128 // for examination in tests.
129 uint16_t failed_symbol_id_; 129 uint16_t failed_symbol_id_;
130 }; 130 };
131 131
132 } // namespace net 132 } // namespace net
133 133
134 #endif // NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_ 134 #endif // NET_SPDY_CORE_HPACK_HPACK_HUFFMAN_TABLE_H_
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