Merge build trunk.
[m6w6/libmemcached] / libmemcached / csl / context.h
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Configure Scripting Language
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38 #pragma once
39
40 #include <libmemcached/csl/common.h>
41 #include <libmemcached/csl/parser.h>
42
43 class Context
44 {
45 public:
46 Context(const char *option_string, size_t option_string_length, memcached_st *memc_arg,
47 memcached_return_t &rc_arg) :
48 previous_token(END),
49 scanner(NULL),
50 begin(NULL),
51 pos(0),
52 memc(NULL),
53 rc(rc_arg),
54 _is_server(false),
55 _end(false),
56 _has_hash(false)
57 {
58 _hostname[0]= 0;
59 buf= option_string;
60 length= option_string_length;
61 memc= memc_arg;
62 init_scanner();
63 rc= MEMCACHED_SUCCESS;
64 }
65
66 bool end()
67 {
68 return _end;
69 }
70
71 void start();
72
73 void set_end()
74 {
75 rc= MEMCACHED_SUCCESS;
76 _end= true;
77 }
78
79 bool set_hash(memcached_hash_t hash);
80
81 void set_server()
82 {
83 _is_server= true;
84 }
85
86 void unset_server()
87 {
88 _is_server= false;
89 }
90
91 bool is_server() const
92 {
93 return _is_server;
94 }
95
96 const char *set_hostname(const char *str, size_t size);
97
98 const char *hostname() const
99 {
100 return _hostname;
101 }
102
103 void abort(const char *, yytokentype, const char *);
104 void error(const char *, yytokentype, const char* );
105
106 ~Context()
107 {
108 destroy_scanner();
109 }
110
111 yytokentype previous_token;
112 void *scanner;
113 const char *buf;
114 const char *begin;
115 size_t pos;
116 size_t length;
117 memcached_st *memc;
118 memcached_return_t &rc;
119
120 protected:
121 void init_scanner();
122 void destroy_scanner();
123
124 private:
125 bool _is_server;
126 bool _end;
127 char _hostname[NI_MAXHOST];
128 bool _has_hash;
129 };