git.m6w6.name Git - m6w6/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/options/context.h>
  43 #include <libmemcached/options/build.h>
  44 #include <libmemcached/options/string.h>
  45 #include <libmemcached/options/symbol.h>
  46 #include <libmemcached/visibility.h>
  47 #include <libmemcached/prefix_key.h>
  48
  49 #pragma GCC diagnostic ignored "-Wold-style-cast"
  50 #include <libmemcached/options/scanner.h>
  51
  52 int conf_lex(YYSTYPE* lvalp, void* scanner);
  53
  54 #define parser_abort(A, B) do { parser::abort_func((A), (B)); YYABORT; } while (0)
  55
  56 inline void config_error(Context *context, yyscan_t *scanner, const char *error)
  57 {
  58   if (not context->end())
  59     parser::abort_func(context, error);
  60 }
  61
  62 %}
  63
  64 %token COMMENT
  65 %token END
  66 %token ERROR
  67 %token RESET
  68 %token PARSER_DEBUG
  69 %token INCLUDE
  70 %token CONFIGURE_FILE
  71 %token EMPTY_LINE
  72 %token SERVER
  73 %token SERVERS
  74 %token SERVERS_OPTION
  75 %token UNKNOWN_OPTION
  76 %token UNKNOWN
  77
  78 /* All behavior options */
  79 %token AUTO_EJECT_HOSTS
  80 %token BINARY_PROTOCOL
  81 %token BUFFER_REQUESTS
  82 %token CONNECT_TIMEOUT
  83 %token DISTRIBUTION
  84 %token HASH
  85 %token HASH_WITH_PREFIX_KEY
  86 %token IO_BYTES_WATERMARK
  87 %token IO_KEY_PREFETCH
  88 %token IO_MSG_WATERMARK
  89 %token KETAMA_HASH
  90 %token KETAMA_WEIGHTED
  91 %token NOREPLY
  92 %token NUMBER_OF_REPLICAS
  93 %token POLL_TIMEOUT
  94 %token RANDOMIZE_REPLICA_READ
  95 %token RCV_TIMEOUT
  96 %token RETRY_TIMEOUT
  97 %token SERVER_FAILURE_LIMIT
  98 %token SND_TIMEOUT
  99 %token SOCKET_RECV_SIZE
 100 %token SOCKET_SEND_SIZE
 101 %token SORT_HOSTS
 102 %token SUPPORT_CAS
 103 %token _TCP_NODELAY
 104 %token _TCP_KEEPALIVE
 105 %token _TCP_KEEPIDLE
 106 %token USER_DATA
 107 %token USE_UDP
 108 %token VERIFY_KEY
 109
 110 /* Callbacks */
 111 %token PREFIX_KEY
 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.length)) != 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.length);
 214           }
 215         | behaviors
 216         ;
 217
 218 behaviors:
 219           PREFIX_KEY string
 220           {
 221             if ((context->rc= memcached_set_prefix_key(context->memc, $2.c_str, $2.length)) != MEMCACHED_SUCCESS)
 222             {
 223               parser_abort(context, NULL);;
 224             }
 225           }
 226         | DISTRIBUTION distribution
 227           {
 228             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 229             {
 230               parser_abort(context, NULL);;
 231             }
 232           }
 233         | DISTRIBUTION distribution ',' hash
 234           {
 235             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 236             {
 237               parser_abort(context, NULL);;
 238             }
 239             if ((context->rc= memcached_behavior_set_distribution_hash(context->memc, $4)) != MEMCACHED_SUCCESS)
 240             {
 241               parser_abort(context, NULL);;
 242             }
 243           }
 244         | HASH hash
 245           {
 246             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_HASH, $2)) != MEMCACHED_SUCCESS)
 247             {
 248               parser_abort(context, NULL);;
 249             }
 250           }
 251         | behavior_number NUMBER
 252           {
 253             if ((context->rc= memcached_behavior_set(context->memc, $1, $2)) != MEMCACHED_SUCCESS)
 254             {
 255               parser_abort(context, NULL);;
 256             }
 257           }
 258         | behavior_boolean
 259           {
 260             if ((context->rc= memcached_behavior_set(context->memc, $1, true)) != MEMCACHED_SUCCESS)
 261             {
 262               parser_abort(context, NULL);;
 263             }
 264           }
 265         |  USER_DATA
 266           {
 267           }
 268         ;
 269
 270 behavior_number:
 271           CONNECT_TIMEOUT
 272           {
 273             $$= MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT;
 274           }
 275         | IO_MSG_WATERMARK
 276           {
 277             $$= MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK;
 278           }
 279         | IO_BYTES_WATERMARK
 280           {
 281             $$= MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK;
 282           }
 283         | IO_KEY_PREFETCH
 284           {
 285             $$= MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH;
 286           }
 287         | NUMBER_OF_REPLICAS
 288           {
 289             $$= MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS;
 290           }
 291         | POLL_TIMEOUT
 292           {
 293             $$= MEMCACHED_BEHAVIOR_POLL_TIMEOUT;
 294           }
 295         |  RCV_TIMEOUT
 296           {
 297             $$= MEMCACHED_BEHAVIOR_RCV_TIMEOUT;
 298           }
 299         |  RETRY_TIMEOUT
 300           {
 301             $$= MEMCACHED_BEHAVIOR_RETRY_TIMEOUT;
 302           }
 303         |  SERVER_FAILURE_LIMIT
 304           {
 305             $$= MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT;
 306           }
 307         |  SND_TIMEOUT
 308           {
 309             $$= MEMCACHED_BEHAVIOR_SND_TIMEOUT;
 310           }
 311         |  SOCKET_RECV_SIZE
 312           {
 313             $$= MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE;
 314           }
 315         |  SOCKET_SEND_SIZE
 316           {
 317             $$= MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE;
 318           }
 319         ;
 320
 321 behavior_boolean:
 322           AUTO_EJECT_HOSTS
 323           {
 324             $$= MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS;
 325           }
 326         | BINARY_PROTOCOL
 327           {
 328             $$= MEMCACHED_BEHAVIOR_BINARY_PROTOCOL;
 329           }
 330         | BUFFER_REQUESTS
 331           {
 332             $$= MEMCACHED_BEHAVIOR_BUFFER_REQUESTS;
 333           }
 334         | HASH_WITH_PREFIX_KEY
 335           {
 336             $$= MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY;
 337           }
 338         | NOREPLY
 339           {
 340             $$= MEMCACHED_BEHAVIOR_NOREPLY;
 341           }
 342         |  RANDOMIZE_REPLICA_READ
 343           {
 344             $$= MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ;
 345           }
 346         |  SORT_HOSTS
 347           {
 348             $$= MEMCACHED_BEHAVIOR_SORT_HOSTS;
 349           }
 350         |  SUPPORT_CAS
 351           {
 352             $$= MEMCACHED_BEHAVIOR_SUPPORT_CAS;
 353           }
 354         |  _TCP_NODELAY
 355           {
 356             $$= MEMCACHED_BEHAVIOR_TCP_NODELAY;
 357           }
 358         |  _TCP_KEEPALIVE
 359           {
 360             $$= MEMCACHED_BEHAVIOR_TCP_KEEPALIVE;
 361           }
 362         |  _TCP_KEEPIDLE
 363           {
 364             $$= MEMCACHED_BEHAVIOR_TCP_KEEPIDLE;
 365           }
 366         |  USE_UDP
 367           {
 368             $$= MEMCACHED_BEHAVIOR_USE_UDP;
 369           }
 370         |  VERIFY_KEY
 371           {
 372             $$= MEMCACHED_BEHAVIOR_VERIFY_KEY;
 373           }
 374
 375
 376 optional_port:
 377           { }
 378         | PORT
 379           { };
 380         ;
 381
 382 optional_weight:
 383           { }
 384         | WEIGHT_START
 385           { }
 386         ;
 387
 388 hash:
 389           MD5
 390           {
 391             $$= MEMCACHED_HASH_MD5;
 392           }
 393         | CRC
 394           {
 395             $$= MEMCACHED_HASH_CRC;
 396           }
 397         | FNV1_64
 398           {
 399             $$= MEMCACHED_HASH_FNV1_64;
 400           }
 401         | FNV1A_64
 402           {
 403             $$= MEMCACHED_HASH_FNV1A_64;
 404           }
 405         | FNV1_32
 406           {
 407             $$= MEMCACHED_HASH_FNV1_32;
 408           }
 409         | FNV1A_32
 410           {
 411             $$= MEMCACHED_HASH_FNV1A_32;
 412           }
 413         | HSIEH
 414           {
 415             $$= MEMCACHED_HASH_HSIEH;
 416           }
 417         | MURMUR
 418           {
 419             $$= MEMCACHED_HASH_MURMUR;
 420           }
 421         | JENKINS
 422           {
 423             $$= MEMCACHED_HASH_JENKINS;
 424           }
 425         ;
 426
 427 string:
 428           STRING
 429           {
 430             $$= $1;
 431           }
 432         | QUOTED_STRING
 433           {
 434             $$.c_str= $1.c_str +1; // +1 to move use passed the initial quote
 435             $$.length= $1.length -1; // -1 removes the end quote
 436           }
 437         ;
 438
 439 distribution:
 440           CONSISTENT
 441           {
 442             $$= MEMCACHED_DISTRIBUTION_CONSISTENT;
 443           }
 444         | MODULA
 445           {
 446             $$= MEMCACHED_DISTRIBUTION_MODULA;
 447           }
 448         | RANDOM
 449           {
 450             $$= MEMCACHED_DISTRIBUTION_RANDOM;
 451           }
 452         ;
 453
 454 %%
 455
 456 void Context::start()
 457 {
 458   config_parse(this, (void **)scanner);
 459 }
 460