diff options
Diffstat (limited to 'third_party/heimdal/lib/com_err/parse.y')
| -rw-r--r-- | third_party/heimdal/lib/com_err/parse.y | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/com_err/parse.y b/third_party/heimdal/lib/com_err/parse.y new file mode 100644 index 0000000..bcb9b05 --- /dev/null +++ b/third_party/heimdal/lib/com_err/parse.y @@ -0,0 +1,175 @@ +%{ +/* + * Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * 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. + * + * 3. Neither the name of the Institute 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 BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "compile_et.h" +#include "lex.h" + +void yyerror (const char *s); +#define yyerror yyerror +static long name2number(const char *str); + +extern char *yytext; + +/* This is for bison */ + +#if !defined(alloca) && !defined(HAVE_ALLOCA) +#define alloca(x) malloc(x) +#endif + +#define YYMALLOC malloc +#define YYFREE free + +%} + +%union { + char *string; + int number; +} + +%token ET INDEX PREFIX EC ID END +%token <string> STRING +%token <number> NUMBER + +%% + +file : /* */ + | header statements + ; + +header : id et + | et + ; + +id : ID STRING + { + id_str = $2; + } + ; + +et : ET STRING + { + base_id = name2number($2); + strlcpy(name, $2, sizeof(name)); + free($2); + } + | ET STRING STRING + { + base_id = name2number($2); + strlcpy(name, $3, sizeof(name)); + free($2); + free($3); + } + ; + +statements : statement + | statements statement + ; + +statement : INDEX NUMBER + { + number = $2; + } + | PREFIX STRING + { + free(prefix); + asprintf (&prefix, "%s_", $2); + if (prefix == NULL) + errx(1, "malloc"); + free($2); + } + | PREFIX + { + prefix = realloc(prefix, 1); + if (prefix == NULL) + errx(1, "malloc"); + *prefix = '\0'; + } + | EC STRING ',' STRING + { + struct error_code *ec = malloc(sizeof(*ec)); + + if (ec == NULL) + errx(1, "malloc"); + + ec->next = NULL; + ec->number = number; + if(prefix && *prefix != '\0') { + asprintf (&ec->name, "%s%s", prefix, $2); + if (ec->name == NULL) + errx(1, "malloc"); + free($2); + } else + ec->name = $2; + ec->string = $4; + APPEND(codes, ec); + number++; + } + | END + { + YYACCEPT; + } + ; + +%% + +static long +name2number(const char *str) +{ + const char *p; + long num = 0; + const char *x = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz0123456789_"; + if(strlen(str) > 4) { + yyerror("table name too long"); + return 0; + } + for(p = str; *p; p++){ + char *q = strchr(x, *p); + if(q == NULL) { + yyerror("invalid character in table name"); + return 0; + } + num = (num << 6) + (q - x) + 1; + } + num <<= 8; + if(num > 0x7fffffff) + num = -(0xffffffff - num + 1); + return num; +} + +void +yyerror (const char *s) +{ + _lex_error_message ("%s\n", s); +} |