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%{
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "cli_val.h"
extern int yy_cli_def_lineno;
extern char *yy_cli_def_text;
static vtw_def *parse_defp;
static int parse_status;
static boolean cli_def_type_only=0; /*{ if (cli_def_type_only) YYACCEPT;}*/
/* XXX: sigh, the -p flag to yacc should do this for us kkkk*/
#define yystacksize tpltstacksize
#define yysslim tpltsslim
/* forward prototypes */
extern int yy_cli_parse_parse();
extern int yy_cli_def_lex();
extern void yy_cli_parse_error(const char *);
static void cli_deferror(const char *);
extern FILE *yy_cli_def_in;
#define YYDEBUG 1
#define yy_cli_parse_lex yy_cli_def_lex
%}
%token EOL
%token MULTI
%token TAG
%token TYPE
%token HELP
%token DEFAULT
%token PATTERN
%token EXEC
%token SYNTAX
%token COMMIT
%token CHECK
%token DUMMY
%left SEMI
%token <val>VALUE
%token <type>TYPE_DEF
%token <strp>VAR
%token <strp> STRING
%token <strp> EX_STRING
%token SYNTAX_ERROR
%token <action>ACTION
%left ASSIGN
%left OR
%left AND
%right NOT
%left COMMA
%nonassoc <cond>COND
%token RP
%token LP
%type <nodep> val
%type <nodep> exp
%type <val> val0
%type <nodep> action
%type <nodep> action0
%union {
char *strp;
valstruct val;
vtw_type_e type;
vtw_cond_e cond;
vtw_node *nodep;
vtw_act_type action;
}
%%
input: tag
| EOL input
| tag otherinput
;
otherinput: type EOL
| cause EOL
| otherinput type EOL
| otherinput cause EOL
| otherinput EOL
| EOL
| syntax_error
;
tag: /* empty */
| TAG EOL {parse_defp->tag = TRUE;}
| MULTI EOL {parse_defp->multi = TRUE;}
;
type: TYPE TYPE_DEF SEMI STRING
{ parse_defp->def_type = $2;
parse_defp->def_type_help = $4; }
;
type: TYPE TYPE_DEF
{ parse_defp->def_type = $2;
}
;
cause: help_cause
| default_cause
| syntax_cause
| ACTION action { append(parse_defp->actions + $1, $2, 0);}
| dummy_stmt
;
dummy_stmt: DUMMY STRING { /* ignored */ }
;
help_cause: HELP STRING
{ parse_defp->def_node_help = $2; /* no semantics for now */
}
default_cause: DEFAULT VALUE
{
if ($2.val_type != parse_defp->def_type)
yy_cli_parse_error((const char *)"Bad default\n");
parse_defp->def_default = $2.val;
}
default_cause: DEFAULT STRING
{
if (TEXT_TYPE != parse_defp->def_type)
yy_cli_parse_error((const char *)"Bad default\n");
parse_defp->def_default = $2;
}
syntax_cause: SYNTAX exp {append(parse_defp->actions + syntax_act, $2, 0);}
;
syntax_cause: COMMIT exp {append(parse_defp->actions + syntax_act, $2, 1);}
;
action0: STRING { $$ = make_node(EXEC_OP, make_str_node($1),NULL);}
;
action: action0
| action0 SEMI STRING
{$$ = make_node(HELP_OP, $1, make_str_node($3));}
| exp
;
exp: LP exp RP
{$$=$2;}
| exp AND exp {$$ = make_node(AND_OP,$1,$3);}
| exp OR exp {$$ = make_node(OR_OP,$1,$3);}
| val COND val
{$$ = make_node(COND_OP,$1,$3);$$->vtw_node_aux = $2;}
| PATTERN VAR STRING
{ $$ = make_node(PATTERN_OP,make_var_node($2),
make_str_node($3));}
| EXEC STRING
{ $$ = make_node(EXEC_OP,make_str_node($2),NULL);}
| NOT exp {$$ = make_node(NOT_OP,$2,NULL);}
| exp SEMI STRING
{$$ = make_node(HELP_OP, $1, make_str_node($3));}
| VAR ASSIGN val
{$$ = make_node(ASSIGN_OP, make_var_node($1), $3);}
;
val: VAR {$$ = make_var_node($1);}
| val0 {$$ = make_val_node(&($1));}
| EX_STRING {$$=make_str_node0($1, B_QUOTE_OP);}
;
val0: VALUE
| val0 COMMA val0 { add_val(&($1), &($3)); $$=$1; }
| STRING {$$ = str2val($1);}
;
syntax_error: SYNTAX_ERROR {
cli_deferror("syntax error");
}
;
%%
char *parse_path;
int parse_def(vtw_def *defp, char *path, boolean type_only)
{
int status;
yy_cli_def_lineno = 1;
parse_status = 0;
parse_defp = defp;
cli_def_type_only = type_only;
yy_cli_def_in = fopen(path, "r");
#if 0
yy_cli_parse_debug = 1;
#endif
if (!yy_cli_def_in)
return -5;
parse_path = path;
status = yy_cli_parse_parse(); /* 0 is OK */
fclose(yy_cli_def_in);
return status;
}
static void
cli_deferror(const char *s)
{
printf("Error: %s in file [%s], line %d, last token [%s]\n",s, parse_path,
yy_cli_def_lineno, yy_cli_def_text);
}
void yy_cli_parse_error(const char *s)
{
cli_deferror(s);
}
|
