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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:53:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:53:30 +0000 |
commit | 2c7cac91ed6e7db0f6937923d2b57f97dbdbc337 (patch) | |
tree | c05dc0f8e6aa3accc84e3e5cffc933ed94941383 /lib/command_lex.l | |
parent | Initial commit. (diff) | |
download | frr-upstream.tar.xz frr-upstream.zip |
Adding upstream version 8.4.4.upstream/8.4.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/command_lex.l')
-rw-r--r-- | lib/command_lex.l | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/lib/command_lex.l b/lib/command_lex.l new file mode 100644 index 0000000..ec366ce --- /dev/null +++ b/lib/command_lex.l @@ -0,0 +1,104 @@ +/* + * Command format string lexer for CLI backend. + * + * -- + * Copyright (C) 2015 Cumulus Networks, Inc. + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Zebra; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +%top{ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +} +%{ +/* ignore flex generated code in static analyzer */ +#ifndef __clang_analyzer__ + +/* ignore harmless bugs in old versions of flex */ +#pragma GCC diagnostic ignored "-Wsign-compare" +#pragma GCC diagnostic ignored "-Wmissing-prototypes" + +#include "lib/command_parse.h" + +#define YY_USER_ACTION yylloc->last_column += yyleng; +#define LOC_STEP do { if (yylloc) { \ + yylloc->first_column = yylloc->last_column; \ + yylloc->first_line = yylloc->last_line; \ + } } while(0) +%} + +IPV4 A\.B\.C\.D +IPV4_PREFIX A\.B\.C\.D\/M +IPV6 X:X::X:X +IPV6_PREFIX X:X::X:X\/M +MAC X:X:X:X:X:X +MAC_PREFIX X:X:X:X:X:X\/M +VARIABLE [A-Z][-_A-Z:0-9]+ +WORD (\-|\+)?[a-zA-Z0-9\*][-+_a-zA-Z0-9\*]* +NUMBER (\-|\+)?[0-9]{1,20} +RANGE \({NUMBER}[ ]?\-[ ]?{NUMBER}\) + +/* yytext shall be a pointer */ +%pointer +%option noyywrap +%option nounput +%option noinput +%option outfile="lib/command_lex.c" +%option header-file="lib/command_lex.h" +%option prefix="cmd_yy" +%option reentrant +%option bison-bridge +%option bison-locations + +%% +%{ + LOC_STEP; +%} + +[ \t]+ LOC_STEP /* ignore whitespace */; +{IPV4} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV4;} +{IPV4_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV4_PREFIX;} +{IPV6} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV6;} +{IPV6_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return IPV6_PREFIX;} +{MAC} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return MAC;} +{MAC_PREFIX} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return MAC_PREFIX;} +{VARIABLE} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return VARIABLE;} +{WORD} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return WORD;} +{RANGE} {yylval->string = XSTRDUP(MTYPE_LEX, yytext); return RANGE;} +!\[ {yylval->string = NULL; return EXCL_BRACKET;} +. {return yytext[0];} +%% + +static YY_BUFFER_STATE buffer; + +void set_lexer_string (yyscan_t *scn, const char *string) +{ + *scn = NULL; + yylex_init(scn); + buffer = yy_scan_string (string, *scn); +} + +void cleanup_lexer (yyscan_t *scn) +{ + // yy_delete_buffer (buffer, *scn); + yylex_destroy(*scn); +} + +#endif /* __clang_analyzer__ */ |