git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/options/parser.yy

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached Scanner and Parser
   4  *
   5  *  Copyright (C) 2011 DataDifferental, http://datadifferential.com
   6  *
   7  *  This program is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU Affero General Public License as
   9  *  published by the Free Software Foundation, either version 3 of the
  10  *  License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU Affero General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Affero General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 %error-verbose
  22 %debug
  23 %defines
  24 %expect 0
  25 %output "libmemcached/options/parser.cc"
  26 %defines "libmemcached/options/parser.h"
  27 %lex-param { yyscan_t *scanner }
  28 %name-prefix="config_"
  29 %parse-param { Context *context }
  30 %parse-param { yyscan_t *scanner }
  31 %pure-parser
  32 %require "2.2"
  33 %start begin
  34 %verbose
  35
  36 %{
  37
  38 #include <config.h>
  39
  40 #include <stdint.h>
  41
  42 #include <libmemcached/common.h>
  43 #include <libmemcached/options/context.h>
  44 #include <libmemcached/options/symbol.h>
  45 #include <libmemcached/options/scanner.h>
  46
  47 #pragma GCC diagnostic ignored "-Wold-style-cast"
  48
  49 int conf_lex(YYSTYPE* lvalp, void* scanner);
  50
  51 #define parser_abort(A, B) do { (A)->abort((B)); YYABORT; } while (0)
  52
  53 inline void config_error(Context *context, yyscan_t *scanner, const char *error)
  54 {
  55   if (not context->end())
  56     context->abort(error);
  57 }
  58
  59 %}
  60
  61 %token COMMENT
  62 %token END
  63 %token ERROR
  64 %token RESET
  65 %token PARSER_DEBUG
  66 %token INCLUDE
  67 %token CONFIGURE_FILE
  68 %token EMPTY_LINE
  69 %token SERVER
  70 %token SERVERS
  71 %token SERVERS_OPTION
  72 %token UNKNOWN_OPTION
  73 %token UNKNOWN
  74
  75 /* All behavior options */
  76 %token BINARY_PROTOCOL
  77 %token BUFFER_REQUESTS
  78 %token CONNECT_TIMEOUT
  79 %token DISTRIBUTION
  80 %token HASH
  81 %token HASH_WITH_NAMESPACE
  82 %token IO_BYTES_WATERMARK
  83 %token IO_KEY_PREFETCH
  84 %token IO_MSG_WATERMARK
  85 %token KETAMA_HASH
  86 %token KETAMA_WEIGHTED
  87 %token NOREPLY
  88 %token NUMBER_OF_REPLICAS
  89 %token POLL_TIMEOUT
  90 %token RANDOMIZE_REPLICA_READ
  91 %token RCV_TIMEOUT
  92 %token REMOVE_FAILED_SERVERS
  93 %token RETRY_TIMEOUT
  94 %token SND_TIMEOUT
  95 %token SOCKET_RECV_SIZE
  96 %token SOCKET_SEND_SIZE
  97 %token SORT_HOSTS
  98 %token SUPPORT_CAS
  99 %token USER_DATA
 100 %token USE_UDP
 101 %token VERIFY_KEY
 102 %token _TCP_KEEPALIVE
 103 %token _TCP_KEEPIDLE
 104 %token _TCP_NODELAY
 105
 106 /* Callbacks */
 107 %token NAMESPACE
 108
 109 /* Pool */
 110 %token POOL_MIN
 111 %token POOL_MAX
 112
 113 /* Hash types */
 114 %token MD5
 115 %token CRC
 116 %token FNV1_64
 117 %token FNV1A_64
 118 %token FNV1_32
 119 %token FNV1A_32
 120 %token HSIEH
 121 %token MURMUR
 122 %token JENKINS
 123
 124 /* Distributions */
 125 %token CONSISTENT
 126 %token MODULA
 127 %token RANDOM
 128
 129 /* Boolean values */
 130 %token <boolean> TRUE
 131 %token <boolean> FALSE
 132
 133 %nonassoc ','
 134 %nonassoc '='
 135
 136 %token <number> FLOAT
 137 %token <number> NUMBER
 138 %token PORT
 139 %token WEIGHT_START
 140 %token <server> IPADDRESS
 141 %token <server> HOSTNAME
 142 %token <string> STRING
 143 %token <string> QUOTED_STRING
 144 %token <string> FILE_PATH
 145
 146 %type <string> string
 147 %type <distribution> distribution
 148 %type <hash> hash
 149 %type <behavior> behavior_boolean
 150 %type <behavior> behavior_number
 151
 152 %%
 153
 154 begin:
 155           statement
 156         | begin ' ' statement
 157         ;
 158
 159 statement:
 160          expression
 161           { }
 162         | COMMENT
 163           { }
 164         | EMPTY_LINE
 165           { }
 166         | END
 167           {
 168             context->set_end();
 169             YYACCEPT;
 170           }
 171         | ERROR
 172           {
 173             context->rc= MEMCACHED_PARSE_USER_ERROR;
 174             parser_abort(context, NULL);
 175           }
 176         | RESET
 177           {
 178             memcached_reset(context->memc);
 179           }
 180         | PARSER_DEBUG
 181           {
 182             yydebug= 1;
 183           }
 184         | INCLUDE ' ' string
 185           {
 186             if ((context->rc= memcached_parse_configure_file(context->memc, $3.c_str, $3.size)) != MEMCACHED_SUCCESS)
 187             {
 188               parser_abort(context, NULL);
 189             }
 190           }
 191         ;
 192
 193
 194 expression:
 195           SERVER HOSTNAME optional_port optional_weight
 196           {
 197             if ((context->rc= memcached_server_add_with_weight(context->memc, $2.c_str, $2.port, $2.weight)) != MEMCACHED_SUCCESS)
 198             {
 199               parser_abort(context, NULL);
 200             }
 201             context->unset_server();
 202           }
 203         | SERVER IPADDRESS optional_port optional_weight
 204           {
 205             if ((context->rc= memcached_server_add_with_weight(context->memc, $2.c_str, $2.port, $2.weight)) != MEMCACHED_SUCCESS)
 206             {
 207               parser_abort(context, NULL);
 208             }
 209             context->unset_server();
 210           }
 211         | CONFIGURE_FILE string
 212           {
 213             memcached_set_configuration_file(context->memc, $2.c_str, $2.size);
 214           }
 215         | POOL_MIN NUMBER
 216           {
 217             context->memc->configure.initial_pool_size= $2;
 218           }
 219         | POOL_MAX NUMBER
 220           {
 221             context->memc->configure.max_pool_size= $2;
 222           }
 223         | behaviors
 224         ;
 225
 226 behaviors:
 227           NAMESPACE string
 228           {
 229             if ((context->rc= memcached_set_prefix_key(context->memc, $2.c_str, $2.size)) != MEMCACHED_SUCCESS)
 230             {
 231               parser_abort(context, NULL);;
 232             }
 233           }
 234         | DISTRIBUTION distribution
 235           {
 236             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 237             {
 238               parser_abort(context, NULL);;
 239             }
 240           }
 241         | DISTRIBUTION distribution ',' hash
 242           {
 243             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 244             {
 245               parser_abort(context, NULL);;
 246             }
 247             if ((context->rc= memcached_behavior_set_distribution_hash(context->memc, $4)) != MEMCACHED_SUCCESS)
 248             {
 249               parser_abort(context, NULL);;
 250             }
 251           }
 252         | HASH hash
 253           {
 254             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_HASH, $2)) != MEMCACHED_SUCCESS)
 255             {
 256               parser_abort(context, NULL);;
 257             }
 258           }
 259         | behavior_number NUMBER
 260           {
 261             if ((context->rc= memcached_behavior_set(context->memc, $1, $2)) != MEMCACHED_SUCCESS)
 262             {
 263               parser_abort(context, NULL);;
 264             }
 265           }
 266         | behavior_boolean
 267           {
 268             if ((context->rc= memcached_behavior_set(context->memc, $1, true)) != MEMCACHED_SUCCESS)
 269             {
 270               parser_abort(context, NULL);;
 271             }
 272           }
 273         |  USER_DATA
 274           {
 275           }
 276         ;
 277
 278 behavior_number:
 279           REMOVE_FAILED_SERVERS
 280           {
 281             $$= MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS;
 282           }
 283         | CONNECT_TIMEOUT
 284           {
 285             $$= MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT;
 286           }
 287         | IO_MSG_WATERMARK
 288           {
 289             $$= MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK;
 290           }
 291         | IO_BYTES_WATERMARK
 292           {
 293             $$= MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK;
 294           }
 295         | IO_KEY_PREFETCH
 296           {
 297             $$= MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH;
 298           }
 299         | NUMBER_OF_REPLICAS
 300           {
 301             $$= MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS;
 302           }
 303         | POLL_TIMEOUT
 304           {
 305             $$= MEMCACHED_BEHAVIOR_POLL_TIMEOUT;
 306           }
 307         |  RCV_TIMEOUT
 308           {
 309             $$= MEMCACHED_BEHAVIOR_RCV_TIMEOUT;
 310           }
 311         |  RETRY_TIMEOUT
 312           {
 313             $$= MEMCACHED_BEHAVIOR_RETRY_TIMEOUT;
 314           }
 315         |  SND_TIMEOUT
 316           {
 317             $$= MEMCACHED_BEHAVIOR_SND_TIMEOUT;
 318           }
 319         |  SOCKET_RECV_SIZE
 320           {
 321             $$= MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE;
 322           }
 323         |  SOCKET_SEND_SIZE
 324           {
 325             $$= MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE;
 326           }
 327         ;
 328
 329 behavior_boolean:
 330           BINARY_PROTOCOL
 331           {
 332             $$= MEMCACHED_BEHAVIOR_BINARY_PROTOCOL;
 333           }
 334         | BUFFER_REQUESTS
 335           {
 336             $$= MEMCACHED_BEHAVIOR_BUFFER_REQUESTS;
 337           }
 338         | HASH_WITH_NAMESPACE
 339           {
 340             $$= MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY;
 341           }
 342         | NOREPLY
 343           {
 344             $$= MEMCACHED_BEHAVIOR_NOREPLY;
 345           }
 346         |  RANDOMIZE_REPLICA_READ
 347           {
 348             $$= MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ;
 349           }
 350         |  SORT_HOSTS
 351           {
 352             $$= MEMCACHED_BEHAVIOR_SORT_HOSTS;
 353           }
 354         |  SUPPORT_CAS
 355           {
 356             $$= MEMCACHED_BEHAVIOR_SUPPORT_CAS;
 357           }
 358         |  _TCP_NODELAY
 359           {
 360             $$= MEMCACHED_BEHAVIOR_TCP_NODELAY;
 361           }
 362         |  _TCP_KEEPALIVE
 363           {
 364             $$= MEMCACHED_BEHAVIOR_TCP_KEEPALIVE;
 365           }
 366         |  _TCP_KEEPIDLE
 367           {
 368             $$= MEMCACHED_BEHAVIOR_TCP_KEEPIDLE;
 369           }
 370         |  USE_UDP
 371           {
 372             $$= MEMCACHED_BEHAVIOR_USE_UDP;
 373           }
 374         |  VERIFY_KEY
 375           {
 376             $$= MEMCACHED_BEHAVIOR_VERIFY_KEY;
 377           }
 378
 379
 380 optional_port:
 381           { }
 382         | PORT
 383           { };
 384         ;
 385
 386 optional_weight:
 387           { }
 388         | WEIGHT_START
 389           { }
 390         ;
 391
 392 hash:
 393           MD5
 394           {
 395             $$= MEMCACHED_HASH_MD5;
 396           }
 397         | CRC
 398           {
 399             $$= MEMCACHED_HASH_CRC;
 400           }
 401         | FNV1_64
 402           {
 403             $$= MEMCACHED_HASH_FNV1_64;
 404           }
 405         | FNV1A_64
 406           {
 407             $$= MEMCACHED_HASH_FNV1A_64;
 408           }
 409         | FNV1_32
 410           {
 411             $$= MEMCACHED_HASH_FNV1_32;
 412           }
 413         | FNV1A_32
 414           {
 415             $$= MEMCACHED_HASH_FNV1A_32;
 416           }
 417         | HSIEH
 418           {
 419             $$= MEMCACHED_HASH_HSIEH;
 420           }
 421         | MURMUR
 422           {
 423             $$= MEMCACHED_HASH_MURMUR;
 424           }
 425         | JENKINS
 426           {
 427             $$= MEMCACHED_HASH_JENKINS;
 428           }
 429         ;
 430
 431 string:
 432           STRING
 433           {
 434             $$= $1;
 435           }
 436         | QUOTED_STRING
 437           {
 438             $$.c_str= $1.c_str +1; // +1 to move use passed the initial quote
 439             $$.size= $1.size -2; // -2 removes the begin and end quote
 440           }
 441         ;
 442
 443 distribution:
 444           CONSISTENT
 445           {
 446             $$= MEMCACHED_DISTRIBUTION_CONSISTENT;
 447           }
 448         | MODULA
 449           {
 450             $$= MEMCACHED_DISTRIBUTION_MODULA;
 451           }
 452         | RANDOM
 453           {
 454             $$= MEMCACHED_DISTRIBUTION_RANDOM;
 455           }
 456         ;
 457
 458 %%
 459
 460 void Context::start()
 461 {
 462   config_parse(this, (void **)scanner);
 463 }
 464