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

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions are
   9  *  met:
  10  *
  11  *      * Redistributions of source code must retain the above copyright
  12  *  notice, this list of conditions and the following disclaimer.
  13  *
  14  *      * Redistributions in binary form must reproduce the above
  15  *  copyright notice, this list of conditions and the following disclaimer
  16  *  in the documentation and/or other materials provided with the
  17  *  distribution.
  18  *
  19  *      * The names of its contributors may not be used to endorse or
  20  *  promote products derived from this software without specific prior
  21  *  written permission.
  22  *
  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  29  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  30  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  *
  35  */
  36
  37 %{
  38
  39 #include <libmemcached/csl/common.h>
  40
  41 class Context;
  42
  43 %}
  44
  45 %error-verbose
  46 %debug
  47 %defines
  48 %expect 0
  49 %output "libmemcached/csl/parser.cc"
  50 %defines "libmemcached/csl/parser.h"
  51 %lex-param { yyscan_t *scanner }
  52 %name-prefix="config_"
  53 %parse-param { class Context *context }
  54 %parse-param { yyscan_t *scanner }
  55 %pure-parser
  56 %require "2.5"
  57 %start begin
  58 %verbose
  59
  60 %{
  61
  62 #include <libmemcached/options.hpp>
  63
  64 #include <libmemcached/csl/context.h>
  65 #include <libmemcached/csl/symbol.h>
  66 #include <libmemcached/csl/scanner.h>
  67
  68 #ifndef __INTEL_COMPILER
  69 # pragma GCC diagnostic ignored "-Wold-style-cast"
  70 #endif
  71
  72 #ifndef __INTEL_COMPILER
  73 # ifndef __clang__
  74 #  pragma GCC diagnostic ignored "-Wlogical-op"
  75 #  pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"
  76 # endif
  77 #endif
  78
  79 int conf_lex(YYSTYPE* lvalp, void* scanner);
  80
  81 #define select_yychar(__context) yychar == UNKNOWN ? ( (__context)->previous_token == END ? UNKNOWN : (__context)->previous_token ) : yychar
  82
  83 #define stryytname(__yytokentype) ((__yytokentype) <  YYNTOKENS ) ? yytname[(__yytokentype)] : ""
  84
  85 #define parser_abort(__context, __error_message) do { (__context)->abort((__error_message), yytokentype(select_yychar(__context)), stryytname(YYTRANSLATE(select_yychar(__context)))); YYABORT; } while (0)
  86
  87 // This is bison calling error.
  88 inline void __config_error(Context *context, yyscan_t *scanner, const char *error, int last_token, const char *last_token_str)
  89 {
  90   if (not context->end())
  91   {
  92     context->error(error, yytokentype(last_token), last_token_str);
  93   }
  94   else
  95   {
  96     context->error(error, yytokentype(last_token), last_token_str);
  97   }
  98 }
  99
 100 #define config_error(__context, __scanner, __error_msg) do { __config_error((__context), (__scanner), (__error_msg), select_yychar(__context), stryytname(YYTRANSLATE(select_yychar(__context)))); } while (0)
 101
 102
 103 %}
 104
 105 %token COMMENT
 106 %token END
 107 %token CSL_ERROR
 108 %token RESET
 109 %token PARSER_DEBUG
 110 %token INCLUDE
 111 %token CONFIGURE_FILE
 112 %token EMPTY_LINE
 113 %token SERVER
 114 %token CSL_SOCKET
 115 %token SERVERS
 116 %token SERVERS_OPTION
 117 %token UNKNOWN_OPTION
 118 %token UNKNOWN
 119
 120 /* All behavior options */
 121 %token BINARY_PROTOCOL
 122 %token BUFFER_REQUESTS
 123 %token CONNECT_TIMEOUT
 124 %token DISTRIBUTION
 125 %token HASH
 126 %token HASH_WITH_NAMESPACE
 127 %token IO_BYTES_WATERMARK
 128 %token IO_KEY_PREFETCH
 129 %token IO_MSG_WATERMARK
 130 %token KETAMA_HASH
 131 %token KETAMA_WEIGHTED
 132 %token NOREPLY
 133 %token NUMBER_OF_REPLICAS
 134 %token POLL_TIMEOUT
 135 %token RANDOMIZE_REPLICA_READ
 136 %token RCV_TIMEOUT
 137 %token REMOVE_FAILED_SERVERS
 138 %token RETRY_TIMEOUT
 139 %token SND_TIMEOUT
 140 %token SOCKET_RECV_SIZE
 141 %token SOCKET_SEND_SIZE
 142 %token SORT_HOSTS
 143 %token SUPPORT_CAS
 144 %token USER_DATA
 145 %token USE_UDP
 146 %token VERIFY_KEY
 147 %token _TCP_KEEPALIVE
 148 %token _TCP_KEEPIDLE
 149 %token _TCP_NODELAY
 150 %token FETCH_VERSION
 151
 152 /* Callbacks */
 153 %token NAMESPACE
 154
 155 /* Pool */
 156 %token POOL_MIN
 157 %token POOL_MAX
 158
 159 /* Hash types */
 160 %token MD5
 161 %token CRC
 162 %token FNV1_64
 163 %token FNV1A_64
 164 %token FNV1_32
 165 %token FNV1A_32
 166 %token HSIEH
 167 %token MURMUR
 168 %token JENKINS
 169
 170 /* Distributions */
 171 %token CONSISTENT
 172 %token MODULA
 173 %token RANDOM
 174
 175 /* Boolean values */
 176 %token <boolean> CSL_TRUE
 177 %token <boolean> CSL_FALSE
 178
 179 %nonassoc ','
 180 %nonassoc '='
 181
 182 %token <number> CSL_FLOAT
 183 %token <number> NUMBER
 184 %token <number> PORT
 185 %token <number> WEIGHT_START
 186 %token <server> IPADDRESS
 187 %token <server> HOSTNAME
 188 %token <string> STRING
 189 %token <string> QUOTED_STRING
 190 %token <string> FILE_PATH
 191
 192 %type <behavior> behavior_boolean
 193 %type <behavior> behavior_number
 194 %type <distribution> distribution
 195 %type <hash> hash
 196 %type <number> optional_port
 197 %type <number> optional_weight
 198 %type <string> string
 199
 200 %%
 201
 202 begin:
 203           statement
 204         | begin ' ' statement
 205         ;
 206
 207 statement:
 208          expression
 209           { }
 210         | COMMENT
 211           { }
 212         | EMPTY_LINE
 213           { }
 214         | END
 215           {
 216             context->set_end();
 217             YYACCEPT;
 218           }
 219         | CSL_ERROR
 220           {
 221             context->rc= MEMCACHED_PARSE_USER_ERROR;
 222             parser_abort(context, "ERROR called directly");
 223           }
 224         | RESET
 225           {
 226             memcached_reset(context->memc);
 227           }
 228         | PARSER_DEBUG
 229           {
 230             yydebug= 1;
 231           }
 232         | INCLUDE ' ' string
 233           {
 234             if ((context->rc= memcached_parse_configure_file(*context->memc, $3.c_str, $3.size)) != MEMCACHED_SUCCESS)
 235             {
 236               parser_abort(context, "Failed to parse configuration file");
 237             }
 238           }
 239         ;
 240
 241
 242 expression:
 243           SERVER HOSTNAME optional_port optional_weight
 244           {
 245             if (memcached_failed(context->rc= memcached_server_add_with_weight(context->memc, $2.c_str, $3, uint32_t($4))))
 246             {
 247               char buffer[1024];
 248               snprintf(buffer, sizeof(buffer), "Failed to add server: %s:%u", $2.c_str, uint32_t($3));
 249               parser_abort(context, buffer);
 250             }
 251             context->unset_server();
 252           }
 253         | SERVER IPADDRESS optional_port optional_weight
 254           {
 255             if (memcached_failed(context->rc= memcached_server_add_with_weight(context->memc, $2.c_str, $3, uint32_t($4))))
 256             {
 257               char buffer[1024];
 258               snprintf(buffer, sizeof(buffer), "Failed to add server: %s:%u", $2.c_str, uint32_t($3));
 259               parser_abort(context, buffer);
 260             }
 261             context->unset_server();
 262           }
 263         | CSL_SOCKET string optional_weight
 264           {
 265             if (memcached_failed(context->rc= memcached_server_add_unix_socket_with_weight(context->memc, $2.c_str, uint32_t($3))))
 266             {
 267               char buffer[1024];
 268               snprintf(buffer, sizeof(buffer), "Failed to add socket: %s", $2.c_str);
 269               parser_abort(context, buffer);
 270             }
 271           }
 272         | CONFIGURE_FILE string
 273           {
 274             memcached_set_configuration_file(context->memc, $2.c_str, $2.size);
 275           }
 276         | POOL_MIN NUMBER
 277           {
 278             context->memc->configure.initial_pool_size= uint32_t($2);
 279           }
 280         | POOL_MAX NUMBER
 281           {
 282             context->memc->configure.max_pool_size= uint32_t($2);
 283           }
 284         | behaviors
 285         ;
 286
 287 behaviors:
 288           NAMESPACE string
 289           {
 290             if (memcached_callback_get(context->memc, MEMCACHED_CALLBACK_PREFIX_KEY, NULL))
 291             {
 292               parser_abort(context, "--NAMESPACE can only be called once");
 293             }
 294
 295             if ((context->rc= memcached_set_namespace(*context->memc, $2.c_str, $2.size)) != MEMCACHED_SUCCESS)
 296             {
 297               parser_abort(context, memcached_last_error_message(context->memc));
 298             }
 299           }
 300         | FETCH_VERSION
 301           {
 302             memcached_flag(*context->memc, MEMCACHED_FLAG_IS_FETCHING_VERSION, true);
 303           }
 304         | DISTRIBUTION distribution
 305           {
 306             // Check to see if DISTRIBUTION has already been set
 307             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 308             {
 309               parser_abort(context, "--DISTRIBUTION can only be called once");
 310             }
 311
 312             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 313             {
 314               parser_abort(context, memcached_last_error_message(context->memc));;
 315             }
 316           }
 317         | DISTRIBUTION distribution ',' hash
 318           {
 319             // Check to see if DISTRIBUTION has already been set
 320             if ((context->rc= memcached_behavior_set(context->memc, MEMCACHED_BEHAVIOR_DISTRIBUTION, $2)) != MEMCACHED_SUCCESS)
 321             {
 322               parser_abort(context, "--DISTRIBUTION can only be called once");
 323             }
 324
 325             if ((context->rc= memcached_behavior_set_distribution_hash(context->memc, $4)) != MEMCACHED_SUCCESS)
 326             {
 327               parser_abort(context, "Unable to set the hash for the DISTRIBUTION requested");
 328             }
 329           }
 330         | HASH hash
 331           {
 332             if (context->set_hash($2) == false)
 333             {
 334               parser_abort(context, "--HASH can only be set once");
 335             }
 336           }
 337         | behavior_number NUMBER
 338           {
 339             if ((context->rc= memcached_behavior_set(context->memc, $1, $2)) != MEMCACHED_SUCCESS)
 340             {
 341               parser_abort(context, "Unable to set behavior");
 342             }
 343           }
 344         | behavior_boolean
 345           {
 346             if ((context->rc= memcached_behavior_set(context->memc, $1, true)) != MEMCACHED_SUCCESS)
 347             {
 348               char buffer[1024];
 349               snprintf(buffer, sizeof(buffer), "Could not set: %s", libmemcached_string_behavior($1));
 350               parser_abort(context, buffer);
 351             }
 352           }
 353         |  USER_DATA
 354           {
 355           }
 356         ;
 357
 358 behavior_number:
 359           REMOVE_FAILED_SERVERS
 360           {
 361             $$= MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS;
 362           }
 363         | CONNECT_TIMEOUT
 364           {
 365             $$= MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT;
 366           }
 367         | IO_MSG_WATERMARK
 368           {
 369             $$= MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK;
 370           }
 371         | IO_BYTES_WATERMARK
 372           {
 373             $$= MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK;
 374           }
 375         | IO_KEY_PREFETCH
 376           {
 377             $$= MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH;
 378           }
 379         | NUMBER_OF_REPLICAS
 380           {
 381             $$= MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS;
 382           }
 383         | POLL_TIMEOUT
 384           {
 385             $$= MEMCACHED_BEHAVIOR_POLL_TIMEOUT;
 386           }
 387         |  RCV_TIMEOUT
 388           {
 389             $$= MEMCACHED_BEHAVIOR_RCV_TIMEOUT;
 390           }
 391         |  RETRY_TIMEOUT
 392           {
 393             $$= MEMCACHED_BEHAVIOR_RETRY_TIMEOUT;
 394           }
 395         |  SND_TIMEOUT
 396           {
 397             $$= MEMCACHED_BEHAVIOR_SND_TIMEOUT;
 398           }
 399         |  SOCKET_RECV_SIZE
 400           {
 401             $$= MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE;
 402           }
 403         |  SOCKET_SEND_SIZE
 404           {
 405             $$= MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE;
 406           }
 407         ;
 408
 409 behavior_boolean:
 410           BINARY_PROTOCOL
 411           {
 412             $$= MEMCACHED_BEHAVIOR_BINARY_PROTOCOL;
 413           }
 414         | BUFFER_REQUESTS
 415           {
 416             $$= MEMCACHED_BEHAVIOR_BUFFER_REQUESTS;
 417           }
 418         | HASH_WITH_NAMESPACE
 419           {
 420             $$= MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY;
 421           }
 422         | NOREPLY
 423           {
 424             $$= MEMCACHED_BEHAVIOR_NOREPLY;
 425           }
 426         |  RANDOMIZE_REPLICA_READ
 427           {
 428             $$= MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ;
 429           }
 430         |  SORT_HOSTS
 431           {
 432             $$= MEMCACHED_BEHAVIOR_SORT_HOSTS;
 433           }
 434         |  SUPPORT_CAS
 435           {
 436             $$= MEMCACHED_BEHAVIOR_SUPPORT_CAS;
 437           }
 438         |  _TCP_NODELAY
 439           {
 440             $$= MEMCACHED_BEHAVIOR_TCP_NODELAY;
 441           }
 442         |  _TCP_KEEPALIVE
 443           {
 444             $$= MEMCACHED_BEHAVIOR_TCP_KEEPALIVE;
 445           }
 446         |  _TCP_KEEPIDLE
 447           {
 448             $$= MEMCACHED_BEHAVIOR_TCP_KEEPIDLE;
 449           }
 450         |  USE_UDP
 451           {
 452             $$= MEMCACHED_BEHAVIOR_USE_UDP;
 453           }
 454         |  VERIFY_KEY
 455           {
 456             $$= MEMCACHED_BEHAVIOR_VERIFY_KEY;
 457           }
 458
 459
 460 optional_port:
 461           { $$= MEMCACHED_DEFAULT_PORT;}
 462         | PORT
 463           { };
 464         ;
 465
 466 optional_weight:
 467           { $$= 1; }
 468         | WEIGHT_START
 469           { }
 470         ;
 471
 472 hash:
 473           MD5
 474           {
 475             $$= MEMCACHED_HASH_MD5;
 476           }
 477         | CRC
 478           {
 479             $$= MEMCACHED_HASH_CRC;
 480           }
 481         | FNV1_64
 482           {
 483             $$= MEMCACHED_HASH_FNV1_64;
 484           }
 485         | FNV1A_64
 486           {
 487             $$= MEMCACHED_HASH_FNV1A_64;
 488           }
 489         | FNV1_32
 490           {
 491             $$= MEMCACHED_HASH_FNV1_32;
 492           }
 493         | FNV1A_32
 494           {
 495             $$= MEMCACHED_HASH_FNV1A_32;
 496           }
 497         | HSIEH
 498           {
 499             $$= MEMCACHED_HASH_HSIEH;
 500           }
 501         | MURMUR
 502           {
 503             $$= MEMCACHED_HASH_MURMUR;
 504           }
 505         | JENKINS
 506           {
 507             $$= MEMCACHED_HASH_JENKINS;
 508           }
 509         ;
 510
 511 string:
 512           STRING
 513           {
 514             $$= $1;
 515           }
 516         | QUOTED_STRING
 517           {
 518             $$= $1;
 519           }
 520         ;
 521
 522 distribution:
 523           CONSISTENT
 524           {
 525             $$= MEMCACHED_DISTRIBUTION_CONSISTENT;
 526           }
 527         | MODULA
 528           {
 529             $$= MEMCACHED_DISTRIBUTION_MODULA;
 530           }
 531         | RANDOM
 532           {
 533             $$= MEMCACHED_DISTRIBUTION_RANDOM;
 534           }
 535         ;
 536
 537 %%
 538
 539 void Context::start()
 540 {
 541   config_parse(this, (void **)scanner);
 542 }
 543