mirror of
https://git.proxmox.com/git/mirror_iproute2
synced 2025-08-16 00:15:11 +00:00
5f78bc3e1d
config: put YACC in config.mk and use environmental variable if present ss: use YACC variable instead of hardcoding bison place options before source file argument use -b to specify file prefix instead of output file, as -o isn't POSIX compatible, this generates ssfilter.tab.c instead of ssfilter.c replace any references to ssfilter.c with references to ssfilter.tab.c tc: use -p flag to set name prefix instead of bison-specific api.prefix directive remove unneeded bison-specific directives use -b instead of -o, replace references to previously generated emp_ematch.yacc.[ch] with references to newly generated emp_ematch.tab.[ch] Signed-off-by: Ethan Sommer <e5ten.arch@gmail.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
96 lines
1.2 KiB
Plaintext
96 lines
1.2 KiB
Plaintext
%{
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <malloc.h>
|
|
#include <string.h>
|
|
#include "m_ematch.h"
|
|
%}
|
|
|
|
%union {
|
|
unsigned int i;
|
|
struct bstr *b;
|
|
struct ematch *e;
|
|
}
|
|
|
|
%{
|
|
extern int ematch_lex(void);
|
|
extern void yyerror(const char *s);
|
|
extern struct ematch *ematch_root;
|
|
extern char *ematch_err;
|
|
%}
|
|
|
|
%token <i> ERROR
|
|
%token <b> ATTRIBUTE
|
|
%token <i> AND OR NOT
|
|
%type <i> invert relation
|
|
%type <e> match expr
|
|
%type <b> args
|
|
%right AND OR
|
|
%start input
|
|
%%
|
|
input:
|
|
/* empty */
|
|
| expr
|
|
{ ematch_root = $1; }
|
|
| expr error
|
|
{
|
|
ematch_root = $1;
|
|
YYACCEPT;
|
|
}
|
|
;
|
|
|
|
expr:
|
|
match
|
|
{ $$ = $1; }
|
|
| match relation expr
|
|
{
|
|
$1->relation = $2;
|
|
$1->next = $3;
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
match:
|
|
invert ATTRIBUTE '(' args ')'
|
|
{
|
|
$2->next = $4;
|
|
$$ = new_ematch($2, $1);
|
|
if ($$ == NULL)
|
|
YYABORT;
|
|
}
|
|
| invert '(' expr ')'
|
|
{
|
|
$$ = new_ematch(NULL, $1);
|
|
if ($$ == NULL)
|
|
YYABORT;
|
|
$$->child = $3;
|
|
}
|
|
;
|
|
|
|
args:
|
|
ATTRIBUTE
|
|
{ $$ = $1; }
|
|
| ATTRIBUTE args
|
|
{ $1->next = $2; }
|
|
;
|
|
|
|
relation:
|
|
AND
|
|
{ $$ = TCF_EM_REL_AND; }
|
|
| OR
|
|
{ $$ = TCF_EM_REL_OR; }
|
|
;
|
|
|
|
invert:
|
|
/* empty */
|
|
{ $$ = 0; }
|
|
| NOT
|
|
{ $$ = 1; }
|
|
;
|
|
%%
|
|
|
|
void yyerror(const char *s)
|
|
{
|
|
ematch_err = strdup(s);
|
|
}
|