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1/*
2 * Command format string lexer for CLI backend.
3 *
4 * --
5 * Copyright (C) 2015 Cumulus Networks, Inc.
6 *
7 * This file is part of GNU Zebra.
8 *
9 * GNU Zebra is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2, or (at your option) any
12 * later version.
13 *
14 * GNU Zebra is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with GNU Zebra; see the file COPYING. If not, write to the Free
21 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 * 02111-1307, USA.
23 */
24
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25%top{
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29}
92055a92 30%{
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31/* ignore flex generated code in static analyzer */
32#ifndef __clang_analyzer__
33
a37bd5e0 34/* ignore harmless bugs in old versions of flex */
073845da 35#pragma GCC diagnostic ignored "-Wsign-compare"
a37bd5e0 36#pragma GCC diagnostic ignored "-Wmissing-prototypes"
073845da 37
09781197 38#include "lib/command_parse.h"
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39
40#define YY_USER_ACTION yylloc->last_column += yyleng;
14152706 41#define LOC_STEP do { if (yylloc) { \
8bb647a8 42 yylloc->first_column = yylloc->last_column; \
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43 yylloc->first_line = yylloc->last_line; \
44 } } while(0)
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45%}
46
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47IPV4 A\.B\.C\.D
48IPV4_PREFIX A\.B\.C\.D\/M
49IPV6 X:X::X:X
50IPV6_PREFIX X:X::X:X\/M
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51MAC X:X:X:X:X:X
52MAC_PREFIX X:X:X:X:X:X\/M
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53VARIABLE [A-Z][-_A-Z:0-9]+
54WORD (\-|\+)?[a-zA-Z0-9\*][-+_a-zA-Z0-9\*]*
b3899769 55NUMBER (\-|\+)?[0-9]{1,20}
ef955a80 56RANGE \({NUMBER}[ ]?\-[ ]?{NUMBER}\)
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57
58/* yytext shall be a pointer */
59%pointer
60%option noyywrap
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61%option nounput
62%option noinput
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63%option outfile="lib/command_lex.c"
64%option header-file="lib/command_lex.h"
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65%option prefix="cmd_yy"
66%option reentrant
67%option bison-bridge
8bb647a8 68%option bison-locations
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69
70%%
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71%{
72 LOC_STEP;
73%}
74
75[ \t]+ LOC_STEP /* ignore whitespace */;
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76{IPV4} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV4;}
77{IPV4_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV4_PREFIX;}
78{IPV6} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV6;}
79{IPV6_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV6_PREFIX;}
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80{MAC} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return MAC;}
81{MAC_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return MAC_PREFIX;}
55b7f20f 82{VARIABLE} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return VARIABLE;}
d114b977 83{WORD} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return WORD;}
55b7f20f 84{RANGE} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return RANGE;}
90c8406c 85!\[ {yylval->string = NULL; return EXCL_BRACKET;}
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86. {return yytext[0];}
87%%
2a23ca6e 88
1b3e9a21 89static YY_BUFFER_STATE buffer;
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90
91void set_lexer_string (yyscan_t *scn, const char *string)
2a23ca6e 92{
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93 *scn = NULL;
94 yylex_init(scn);
95 buffer = yy_scan_string (string, *scn);
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96}
97
e9484f70 98void cleanup_lexer (yyscan_t *scn)
4427e9b3 99{
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100 // yy_delete_buffer (buffer, *scn);
101 yylex_destroy(*scn);
2a23ca6e 102}
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103
104#endif /* __clang_analyzer__ */