diff options
author | Manoj Srivastava <srivasta@debian.org> | 2016-07-29 18:07:24 -0700 |
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committer | Manoj Srivastava <srivasta@debian.org> | 2016-07-29 18:07:24 -0700 |
commit | f1d010bed8760aa87f9c72eded97d4d9b98cc620 (patch) | |
tree | 439628ed03b3b68404b7198883f993d1ef2b6753 /tests/bison_yylval_scanner.l |
Import flex_2.6.1.orig.tar.gz
[dgit import orig flex_2.6.1.orig.tar.gz]
Diffstat (limited to 'tests/bison_yylval_scanner.l')
-rw-r--r-- | tests/bison_yylval_scanner.l | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tests/bison_yylval_scanner.l b/tests/bison_yylval_scanner.l new file mode 100644 index 0000000..1e93fc1 --- /dev/null +++ b/tests/bison_yylval_scanner.l @@ -0,0 +1,81 @@ +/* + * This file is part of flex. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. + */ + +%{ +/* The scanner expects to link to bison yylval . */ +#include <stdio.h> +#include <stdlib.h> +#include "bison_yylval_parser.h" +#include "config.h" +static char* STRDUP(char* s1); + +enum yesno_t { no=0, yes=1 }; +#define YY_EXTRA_TYPE enum yesno_t +%} + +%option 8bit prefix="test" +%option reentrant bison-bridge +%option header="bison_yylval_scanner.h" +%option noyywrap nomain nounput noyy_top_state noyywrap nodefault noinput warn +%option stack + + +%x IN_TAG +%x DISCARD_THRU_GT +%% + + #define YY_USER_INIT yyextra = no; + #define NEED_TAG_NAME yyextra + + +<INITIAL>{ +"</" { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return LTSLASH;} +"<"[^[:alpha:]] { yy_push_state(DISCARD_THRU_GT,yyscanner); } +"<" { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return LT; } +[^<]{1,512} { yyget_lval(yyscanner)->str = STRDUP(yytext); return TEXT;} +} +<IN_TAG>{ +">" { yy_pop_state( yyscanner ); return GT; } +[[:alpha:]][[:alnum:]]* { + if( NEED_TAG_NAME == yes){ + NEED_TAG_NAME=no; + yylval->str = STRDUP(yytext); + return TAGNAME; + } + } + +.|\r|\n { } +} +<DISCARD_THRU_GT>{ +[^>]{1,512} { } +">" { yy_pop_state(yyscanner);} +} +%% + + +static char* STRDUP(char* s1) +{ + char* s2 = malloc(strlen(s1)+1); + sprintf(s2,"%s",s1); + return s2; +} |