kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-10-12 15:45:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge murf's generous expression contributions (bug #1292)

Browse Source 
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2855 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-05-02 04:09:35 +00:00
parent cb59df7bed
commit 9d1e203b3d
1 changed files with 114 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

136
ast_expr.y
View File

@@ -48,6 +48,7 @@ struct val {
struct parser_control {
struct val *result;
int pipa;
char *arg_orig;
char *argv;
char *ptrptr;
int firsttoken;
@@ -78,10 +79,30 @@ static struct val *op_rem __P((struct val *, struct val *));
static struct val *op_times __P((struct val *, struct val *));
static quad_t to_integer __P((struct val *));
static void to_string __P((struct val *));
static int ast_yyerror __P((const char *));
/* uh, if I want to predeclare yylex with a YYLTYPE, I have to predeclare the yyltype... sigh */
typedef struct yyltype
{
int first_line;
int first_column;
int last_line;
int last_column;
} yyltype;
# define YYLTYPE yyltype
# define YYLTYPE_IS_TRIVIAL 1
static int ast_yyerror __P((const char *,YYLTYPE *, struct parser_control *));
#define ast_yyerror(x) ast_yyerror(x,&yyloc,kota)
%}
%pure-parser
%locations
/* %debug for when you are having big problems */
/* %name-prefix="ast_yy" */
%union
@@ -90,7 +111,7 @@ static int ast_yyerror __P((const char *));
}
%{
static int ast_yylex __P((YYSTYPE *, struct parser_control *));
static int ast_yylex __P((YYSTYPE *, YYLTYPE *, struct parser_control *));
%}
@@ -110,21 +131,21 @@ start: expr { ((struct parser_control *)kota)->result = $$; }
;
expr: TOKEN
| '(' expr ')' { $$ = $2; }
| expr '|' expr { $$ = op_or ($1, $3); }
| expr '&' expr { $$ = op_and ($1, $3); }
| expr '=' expr { $$ = op_eq ($1, $3); }
| expr '>' expr { $$ = op_gt ($1, $3); }
| expr '<' expr { $$ = op_lt ($1, $3); }
| expr GE expr { $$ = op_ge ($1, $3); }
| expr LE expr { $$ = op_le ($1, $3); }
| expr NE expr { $$ = op_ne ($1, $3); }
| expr '+' expr { $$ = op_plus ($1, $3); }
| expr '-' expr { $$ = op_minus ($1, $3); }
| expr '*' expr { $$ = op_times ($1, $3); }
| expr '/' expr { $$ = op_div ($1, $3); }
| expr '%' expr { $$ = op_rem ($1, $3); }
| expr ':' expr { $$ = op_colon ($1, $3); }
| '(' expr ')' { $$ = $2; @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '|' expr { $$ = op_or ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '&' expr { $$ = op_and ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '=' expr { $$ = op_eq ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '>' expr { $$ = op_gt ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '<' expr { $$ = op_lt ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr GE expr { $$ = op_ge ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr LE expr { $$ = op_le ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr NE expr { $$ = op_ne ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '+' expr { $$ = op_plus ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '-' expr { $$ = op_minus ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '*' expr { $$ = op_times ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '/' expr { $$ = op_div ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr '%' expr { $$ = op_rem ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
| expr ':' expr { $$ = op_colon ($1, $3); @$.first_column = @1.first_column; @$.last_column = @3.last_column; @$.first_line=0; @$.last_line=0;}
;
@@ -250,19 +271,62 @@ struct val *vp;
return (vp->type == string);
}
static int
ast_yylex (YYSTYPE *lvalp, struct parser_control *karoto)
ast_yylex (YYSTYPE *lvalp, YYLTYPE *yylloc, struct parser_control *karoto)
{
char *p;
char *p=0;
char *t1=0;
if (karoto->firsttoken==1) {
p=strtok_r(karoto->argv," ",&(karoto->ptrptr));
t1 = karoto->argv;
karoto->firsttoken = 0;
} else {
p=strtok_r(NULL," ",&(karoto->ptrptr));
t1 = karoto->ptrptr;
}
while(*t1 && *t1 == ' ' ) /* we can remove worries about leading/multiple spaces being present */
t1++;
karoto->ptrptr = t1;
yylloc->first_column = t1 - karoto->argv;
while( *t1 && *t1 != ' ' && *t1 != '"') /* find the next space or quote */
t1++;
if( *t1 == ' ' )
{
*t1 = 0;
p = karoto->ptrptr;
karoto->ptrptr = t1+1;
yylloc->last_column = t1 - karoto->argv;
}
else if (*t1 == '"' )
{
/* opening quote. find the closing quote */
char *t2=t1+1;
while( *t2 && *t2 != '"')
t2++;
if( *t2 == '"' )
{
*t2 = 0;
karoto->ptrptr = t2+1;
p = t1+1;
}
else
{
/* NOT GOOD -- no closing quote! */
p = t1;
karoto->ptrptr = t2;
}
yylloc->last_column = t2 - karoto->argv;
}
else if( *t1 == 0 )
{
/* we are done. That was quick */
p = karoto->ptrptr;
yylloc->last_column = t1 - karoto->argv;
}
if( *p == 0 )
p = 0;
if (p==NULL) {
return (0);
}
@@ -306,6 +370,8 @@ char *ast_expr (char *arg)
karoto.result = NULL;
karoto.firsttoken=1;
karoto.argv=kota;
karoto.arg_orig = arg;
/* ast_yydebug = 1; */
ast_yyparse ((void *)&karoto);
@@ -339,11 +405,31 @@ int main(int argc,char **argv) {
#endif
#undef ast_yyerror
#define ast_yyerror(x) ast_yyerror(x, YYLTYPE *yylloc, struct parser_control *karoto)
static int
ast_yyerror (s)
const char *s;
ast_yyerror (const char *s)
{
ast_log(LOG_WARNING,"ast_yyerror(): syntax error: %s\n",s);
char spacebuf[8000]; /* best safe than sorry */
char spacebuf2[8000]; /* best safe than sorry */
int i=0;
spacebuf[0] = 0;
if( yylloc->first_column > 7990 ) /* if things get out of whack, why crash? */
yylloc->first_column = 7990;
if( yylloc->last_column > 7990 )
yylloc->last_column = 7990;
for(i=0;i<yylloc->first_column;i++) spacebuf[i] = ' ';
for( ;i<yylloc->last_column;i++) spacebuf[i] = '^';
spacebuf[i] = 0;
for(i=0;i<karoto->ptrptr-karoto->argv;i++) spacebuf2[i] = ' ';
spacebuf2[i++]='^';
spacebuf2[i]= 0;
ast_log(LOG_WARNING,"ast_yyerror(): syntax error: %s; Input:\n%s\n%s\n%s\n",s,
karoto->arg_orig,spacebuf,spacebuf2);
return(0);
}