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 %top{
39 
40 #include <libmemcached/csl/common.h>
41 #include <libmemcached/csl/context.h>
42 #include <libmemcached/csl/parser.h>
43 #include <libmemcached/csl/symbol.h>
44 
45 #ifndef __INTEL_COMPILER
46 #pragma GCC diagnostic ignored "-Wold-style-cast"
47 #pragma GCC diagnostic ignored "-Wsign-compare"
48 #pragma GCC diagnostic ignored "-Wunused-parameter"
49 #pragma GCC diagnostic ignored "-Wmissing-declarations"
50 #pragma GCC diagnostic ignored "-Wunused-result"
51 #pragma GCC diagnostic ignored "-Wmissing-noreturn"
52 #endif
53 
54 #ifdef __clang__
55 #pragma GCC diagnostic ignored "-Wshorten-64-to-32"
56 #endif
57 
58 #ifndef __INTEL_COMPILER
59 #ifndef __clang__
60 #pragma GCC diagnostic ignored "-Wlogical-op"
61 #endif
62 #endif
63 
64 }
65 
66 
67 %{
68 #define PARAM yyget_extra(yyscanner)
69 
70 #define get_lex_chars(buffer, result, max_size, context) \
71 { \
72   if (context->pos >= context->length) \
73   { \
74     result= YY_NULL; \
75   } \
76   else \
77   { \
78     result= (int)(context->length - context->pos); \
79     (size_t)result > (size_t)max_size ? result= max_size : 0; \
80     memcpy(buffer, context->buf + context->pos, result); \
81     context->pos += result; \
82   } \
83 }
84 
85 #define YY_FATAL_ERROR(msg) \
86 { \
87 }
88 
89 
90 #define YY_INPUT(buffer, result, max_size) get_lex_chars(buffer, result, max_size, PARAM)
91 
92 %}
93 
94 %option nostdinit
95 %option 8bit
96 %option warn
97 %option bison-bridge
98 %option never-interactive
99 %option case-insensitive
100 %option nodefault
101 %option noinput
102 %option nounput
103 %option noyywrap
104 %option outfile="libmemcached/csl/scanner.cc" header-file="libmemcached/csl/scanner.h"
105 %option perf-report
106 %option prefix="config_"
107 %option reentrant
108 
109 %%
110 
111 
112 =|,|[ ]       { return yytext[0];}
113 
114 [[:digit:]]+ { yylval->number= atoi(yytext); return (NUMBER); }
115 
116 :[[:digit:]]{1,5} { yylval->number= atoi(yytext +1); return PORT; }
117 
118 "/?"[[:digit:]]{1,5} { yylval->number= atoi(yytext +2); return WEIGHT_START; }
119 
120 [\t\r\n] ; /* skip whitespace */
121 
122 
123 ^#.*$ {
124       return COMMENT;
125     }
126 
127 "--SERVER="                          { yyextra->begin= yytext; yyextra->set_server(); return yyextra->previous_token= SERVER; }
128 
129 "--SOCKET="                          { yyextra->begin= yytext; return yyextra->previous_token= CSL_SOCKET; }
130 
131 "--BINARY-PROTOCOL"			{ yyextra->begin= yytext; return yyextra->previous_token= BINARY_PROTOCOL; }
132 "--BUFFER-REQUESTS"			{ yyextra->begin= yytext; return yyextra->previous_token= BUFFER_REQUESTS; }
133 "--CONFIGURE-FILE="			{ yyextra->begin= yytext; return yyextra->previous_token= CONFIGURE_FILE; }
134 "--CONNECT-TIMEOUT="			{ yyextra->begin= yytext; return yyextra->previous_token= CONNECT_TIMEOUT; }
135 "--DISTRIBUTION="			{ yyextra->begin= yytext; return yyextra->previous_token= DISTRIBUTION; }
136 "--HASH-WITH-NAMESPACE"	        { yyextra->begin= yytext; return yyextra->previous_token= HASH_WITH_NAMESPACE; }
137 "--HASH="			        { yyextra->begin= yytext; return yyextra->previous_token= HASH; }
138 "--IO-BYTES-WATERMARK="	        { yyextra->begin= yytext; return yyextra->previous_token= IO_BYTES_WATERMARK; }
139 "--IO-KEY-PREFETCH="			{ yyextra->begin= yytext; return yyextra->previous_token= IO_KEY_PREFETCH; }
140 "--IO-MSG-WATERMARK="	        { yyextra->begin= yytext; return yyextra->previous_token= IO_MSG_WATERMARK; }
141 "--NOREPLY"                         { yyextra->begin= yytext; return yyextra->previous_token= NOREPLY; }
142 "--NUMBER-OF-REPLICAS="	        { yyextra->begin= yytext; return yyextra->previous_token= NUMBER_OF_REPLICAS; }
143 "--POLL-TIMEOUT="			{ yyextra->begin= yytext; return yyextra->previous_token= POLL_TIMEOUT; }
144 "--RANDOMIZE-REPLICA-READ"	        { yyextra->begin= yytext; return yyextra->previous_token= RANDOMIZE_REPLICA_READ; }
145 "--RCV-TIMEOUT="			{ yyextra->begin= yytext; return yyextra->previous_token= RCV_TIMEOUT; }
146 "--REMOVE-FAILED-SERVERS="			{ yyextra->begin= yytext; return yyextra->previous_token= REMOVE_FAILED_SERVERS; }
147 "--RETRY-TIMEOUT="			{ yyextra->begin= yytext; return yyextra->previous_token= RETRY_TIMEOUT; }
148 "--SND-TIMEOUT="			{ yyextra->begin= yytext; return yyextra->previous_token= SND_TIMEOUT; }
149 "--SOCKET-RECV-SIZE="	        { yyextra->begin= yytext; return yyextra->previous_token= SOCKET_RECV_SIZE; }
150 "--SOCKET-SEND-SIZE="	        { yyextra->begin= yytext; return yyextra->previous_token= SOCKET_SEND_SIZE; }
151 "--SORT-HOSTS"			{ yyextra->begin= yytext; return yyextra->previous_token= SORT_HOSTS; }
152 "--SUPPORT-CAS"			{ yyextra->begin= yytext; return yyextra->previous_token= SUPPORT_CAS; }
153 "--TCP-KEEPALIVE"			{ yyextra->begin= yytext; return yyextra->previous_token= _TCP_KEEPALIVE; }
154 "--TCP-KEEPIDLE"			{ yyextra->begin= yytext; return yyextra->previous_token= _TCP_KEEPIDLE; }
155 "--TCP-NODELAY"			{ yyextra->begin= yytext; return yyextra->previous_token= _TCP_NODELAY; }
156 "--USE-UDP"	       		        { yyextra->begin= yytext; return yyextra->previous_token= USE_UDP; }
157 "--USER-DATA"			{ yyextra->begin= yytext; return yyextra->previous_token= USER_DATA; }
158 "--VERIFY-KEY"                      { yyextra->begin= yytext; return yyextra->previous_token= VERIFY_KEY; }
159 
160 "--POOL-MIN="	       		        { yyextra->begin= yytext; return yyextra->previous_token= POOL_MIN; }
161 "--POOL-MAX="	       		        { yyextra->begin= yytext; return yyextra->previous_token= POOL_MAX; }
162 
163 "--NAMESPACE="	       		        { yyextra->begin= yytext; return yyextra->previous_token= NAMESPACE; }
164 
165 "--FETCH-VERSION"	       		        { yyextra->begin= yytext; return yyextra->previous_token= FETCH_VERSION; }
166 
167 INCLUDE           { yyextra->begin= yytext; return yyextra->previous_token= INCLUDE; }
168 RESET           { yyextra->begin= yytext; return yyextra->previous_token= RESET; }
169 DEBUG           { yyextra->begin= yytext; return yyextra->previous_token= PARSER_DEBUG; }
170 SERVERS           { yyextra->begin= yytext; return yyextra->previous_token= SERVERS; }
171 END           { yyextra->begin= yytext; return yyextra->previous_token= END; }
172 CSL_ERROR           { yyextra->begin= yytext; return yyextra->previous_token= CSL_ERROR; }
173 
174 TRUE           { return yyextra->previous_token= CSL_TRUE; }
175 FALSE           { return yyextra->previous_token= CSL_FALSE; }
176 
177 
178 "--"[[:alnum:]]*   {
179       yyextra->begin= yytext;
180       return UNKNOWN_OPTION;
181     }
182 
183 CONSISTENT      { return CONSISTENT; }
184 MODULA          { return MODULA; }
185 RANDOM          { return RANDOM; }
186 
187 MD5			{ return MD5; }
188 CRC			{ return CRC; }
189 FNV1_64			{ return FNV1_64; }
190 FNV1A_64			{ return FNV1A_64; }
191 FNV1_32			{ return FNV1_32; }
192 FNV1A_32			{ return FNV1A_32; }
193 HSIEH			{ return HSIEH; }
194 MURMUR			{ return MURMUR; }
195 JENKINS			{ return JENKINS; }
196 
197 (([[:digit:]]{1,3}"."){3}([[:digit:]]{1,3})) {
198       yyextra->hostname(yytext, yyleng, yylval->server);
199       return IPADDRESS;
200     }
201 
202 [[:alnum:]]["."[:alnum:]_-]+[[:alnum:]] {
203       if (yyextra->is_server())
204       {
205         yyextra->hostname(yytext, yyleng, yylval->server);
206 
207         return HOSTNAME;
208       }
209 
210       yyextra->string_buffer(yytext, yyleng, yylval->string);
211 
212       return STRING;
213     }
214 
215 L?\"(\\.|[^\\"])*\" {
216       yyget_text(yyscanner)[yyleng -1]= 0;
217       yyextra->string_buffer(yytext +1, yyleng -2, yylval->string);
218       return QUOTED_STRING;
219     }
220 
221 .   {
222       yyextra->begin= yytext;
223       return UNKNOWN;
224     }
225 
226 %%
227 
228 void Context::init_scanner()
229 {
230   yylex_init(&scanner);
231   yyset_extra(this, scanner);
232 }
233 
234 void Context::destroy_scanner()
235 {
236   (void)yy_fatal_error; // Removes warning about unused yy_fatal_error()
237   yylex_destroy(scanner);
238 }
239 
240