Drizzled Public API Documentation

context.h
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2  *
3  * Drizzle Execute Parser
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 <config.h>
41 #include <cstdlib>
42 #include <vector>
43 #include <string>
44 #include <drizzled/error_t.h>
45 
46 
47 namespace drizzled {
48 namespace execute {
49 
50 class Context
51 {
52 public:
53  Context(const char *option_string, size_t option_string_length, drizzled::error_t &rc_arg) :
54  scanner(NULL),
55  begin(NULL),
56  pos(0),
57  rc(rc_arg),
58  _is_server(false),
59  _end(false)
60  {
61  buf= option_string;
62  length= option_string_length;
63  init_scanner();
64  rc= EE_OK;
65  }
66 
67  bool end() const
68  {
69  return _end;
70  }
71 
72  std::vector<std::string> start();
73 
74  void set_end()
75  {
76  rc= EE_OK;
77  _end= true;
78  }
79 
80  ~Context()
81  {
82  destroy_scanner();
83  }
84 
85  void *scanner;
86  const char *buf;
87  const char *begin;
88  size_t pos;
89  size_t length;
90  drizzled::error_t &rc;
91  bool _is_server;
92 
93 protected:
94  void init_scanner();
95  void destroy_scanner();
96 
97 private:
98  bool _end;
99 };
100 
101 } // namespace execute
102 } // namespace drizzled
TODO: Rename this file - func.h is stupid.