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|
%{
/*
* gram.y - message definition language
*
* Copyright (c) 2009 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
extern void yyerror (char *s);
extern int yylex (void);
#define YYSTYPE void *
void generate (YYSTYPE);
YYSTYPE add_slist(YYSTYPE, YYSTYPE);
YYSTYPE add_define(YYSTYPE, YYSTYPE);
YYSTYPE suppress_version(void);
YYSTYPE add_defbody(YYSTYPE, YYSTYPE);
YYSTYPE add_primtype(YYSTYPE, YYSTYPE, YYSTYPE);
YYSTYPE add_complex(YYSTYPE, YYSTYPE);
YYSTYPE add_union(YYSTYPE, YYSTYPE);
YYSTYPE add_scalar_vbl(YYSTYPE);
YYSTYPE add_vector_vbl(YYSTYPE, YYSTYPE);
YYSTYPE add_variable_length_vector_vbl(YYSTYPE, YYSTYPE);
YYSTYPE set_flags(YYSTYPE, YYSTYPE);
%}
%token NAME RPAR LPAR SEMI LBRACK RBRACK NUMBER PRIMTYPE BARF
%token TPACKED DEFINE LCURLY RCURLY STRING UNION
%token HELPER_STRING COMMA
%token NOVERSION MANUAL_PRINT MANUAL_ENDIAN TYPEONLY DONT_TRACE
%%
pgm: slist {generate ($1);}
;
slist: slist stmt {$$ = add_slist ($1, $2);}
| stmt {$$ = $1;}
;
stmt: flist defn {$$ = set_flags($1, $2);}
| defn {$$ = $1;}
;
flist: flist flag {$$ = (YYSTYPE)(unsigned long long)
((unsigned long long) $1
| (unsigned long long) $2);}
| flag {$$ = $1;}
;
flag:
MANUAL_PRINT {$$ = $1;}
| MANUAL_ENDIAN {$$ = $1;}
| DONT_TRACE {$$ = $1;}
| TYPEONLY {$$ = $1;}
;
defn: DEFINE NAME LCURLY defbody RCURLY SEMI
{$$ = add_define($2, $4);}
| NOVERSION SEMI
{$$ = suppress_version();}
;
defbody: defbody onedef {$$ = add_defbody($1, $2);}
| onedef {$$ = $1;}
;
onedef: PRIMTYPE vbl SEMI {$$ = add_primtype($1, $2, 0);}
| TPACKED PRIMTYPE vbl SEMI {$$ = add_primtype($1, $2, $3);}
| NAME vbl SEMI {$$ = add_complex($1, $2);}
| UNION NAME LCURLY defbody RCURLY SEMI
{$$ = add_union($2, $4);}
;
vbl: NAME {$$ = add_scalar_vbl($1);}
| NAME LBRACK NUMBER RBRACK {$$ = add_vector_vbl($1, $3);}
| NAME LBRACK NAME RBRACK {$$ = add_variable_length_vector_vbl($1, $3);}
;
|
