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Side by Side Diff: net/spdy/hpack_entry.h

Issue 485833002: HTTP2 draft 14 support (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Add ignore_result(). Created 6 years, 4 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_HPACK_ENTRY_H_ 5 #ifndef NET_SPDY_HPACK_ENTRY_H_
6 #define NET_SPDY_HPACK_ENTRY_H_ 6 #define NET_SPDY_HPACK_ENTRY_H_
7 7
8 #include <cstddef> 8 #include <cstddef>
9 #include <set> 9 #include <set>
10 #include <string> 10 #include <string>
11 11
12 #include "base/basictypes.h" 12 #include "base/basictypes.h"
13 #include "base/macros.h" 13 #include "base/macros.h"
14 #include "base/strings/string_piece.h" 14 #include "base/strings/string_piece.h"
15 #include "net/base/net_export.h" 15 #include "net/base/net_export.h"
16 16
17 // All section references below are to 17 // All section references below are to
18 // http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-08 18 // http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-08
19 19
20 namespace net { 20 namespace net {
21 21
22 // A structure for an entry in the header table (3.2) and the 22 // A structure for an entry in the static table (3.3.1)
23 // reference set (3.3). 23 // and the header table (3.3.2).
24 class NET_EXPORT_PRIVATE HpackEntry { 24 class NET_EXPORT_PRIVATE HpackEntry {
25 public: 25 public:
26 // The constant amount added to name().size() and value().size() to 26 // The constant amount added to name().size() and value().size() to
27 // get the size of an HpackEntry as defined in 5.1. 27 // get the size of an HpackEntry as defined in 5.1.
28 static const size_t kSizeOverhead; 28 static const size_t kSizeOverhead;
29 29
30 // Creates an entry. Preconditions: 30 // Creates an entry. Preconditions:
31 // - |is_static| captures whether this entry is a member of the static 31 // - |is_static| captures whether this entry is a member of the static
32 // or dynamic header table. 32 // or dynamic header table.
33 // - |insertion_index| is this entry's index in the total set of entries ever 33 // - |insertion_index| is this entry's index in the total set of entries ever
(...skipping 19 matching lines...) Expand all
53 const std::string& name() const { return name_; } 53 const std::string& name() const { return name_; }
54 const std::string& value() const { return value_; } 54 const std::string& value() const { return value_; }
55 55
56 // Returns whether this entry is a member of the static (as opposed to 56 // Returns whether this entry is a member of the static (as opposed to
57 // dynamic) table. 57 // dynamic) table.
58 bool IsStatic() const { return type_ == STATIC; } 58 bool IsStatic() const { return type_ == STATIC; }
59 59
60 // Returns whether this entry is a lookup-only entry. 60 // Returns whether this entry is a lookup-only entry.
61 bool IsLookup() const { return type_ == LOOKUP; } 61 bool IsLookup() const { return type_ == LOOKUP; }
62 62
63 // Returns and sets the state of the entry, or zero if never set.
64 // The semantics of |state| are specific to the encoder or decoder.
65 uint8 state() const { return state_; }
66 void set_state(uint8 state) { state_ = state; }
67
68 // Used to compute the entry's index in the header table. 63 // Used to compute the entry's index in the header table.
69 size_t InsertionIndex() const { return insertion_index_; } 64 size_t InsertionIndex() const { return insertion_index_; }
70 65
71 // Returns the size of an entry as defined in 5.1. 66 // Returns the size of an entry as defined in 5.1.
72 static size_t Size(base::StringPiece name, base::StringPiece value); 67 static size_t Size(base::StringPiece name, base::StringPiece value);
73 size_t Size() const; 68 size_t Size() const;
74 69
75 std::string GetDebugString() const; 70 std::string GetDebugString() const;
76 71
77 private: 72 private:
78 enum EntryType { 73 enum EntryType {
79 LOOKUP, 74 LOOKUP,
80 DYNAMIC, 75 DYNAMIC,
81 STATIC, 76 STATIC,
82 }; 77 };
83 78
84 // TODO(jgraettinger): Reduce copies, possibly via SpdyPinnableBufferPiece. 79 // TODO(jgraettinger): Reduce copies, possibly via SpdyPinnableBufferPiece.
85 std::string name_; 80 std::string name_;
86 std::string value_; 81 std::string value_;
87 82
88 // The entry's index in the total set of entries ever inserted into the header 83 // The entry's index in the total set of entries ever inserted into the header
89 // table. 84 // table.
90 size_t insertion_index_; 85 size_t insertion_index_;
91 86
92 uint8 state_;
93 EntryType type_; 87 EntryType type_;
94 }; 88 };
95 89
96 } // namespace net 90 } // namespace net
97 91
98 #endif // NET_SPDY_HPACK_ENTRY_H_ 92 #endif // NET_SPDY_HPACK_ENTRY_H_
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