git.m6w6.name Git - awesomized/libmemcached/blob - 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 };