@ -124,7 +124,12 @@ int ast_yyerror(const char *,YYLTYPE *, struct parse_io *);
some useful info about the error. Not as easy as it looks, but it
is possible. */
#define ast_yyerror(x) ast_yyerror(x,&yyloc,parseio)
#define DESTROY(x) { \
if ((x)->type == AST_EXPR_numeric_string || (x)->type == AST_EXPR_string) \
free((x)->u.s); \
(x)->u.s = 0; \
free(x); \
}
%}
%pure-parser
@ -158,69 +163,91 @@ extern int ast_yylex __P((YYSTYPE *, YYLTYPE *, yyscan_t));
%%
start: expr { ((struct parse_io *)parseio)->val = (struct val *)calloc(sizeof(struct val),1);
((struct parse_io *)parseio)->val->type = $$ ->type;
if( $$ ->type == AST_EXPR_integer )
((struct parse_io *)parseio)->val->u.i = $$ ->u.i;
((struct parse_io *)parseio)->val->type = $1 ->type;
if( $1 ->type == AST_EXPR_integer )
((struct parse_io *)parseio)->val->u.i = $1 ->u.i;
else
((struct parse_io *)parseio)->val->u.s = $$->u.s; }
((struct parse_io *)parseio)->val->u.s = $1->u.s;
free($1);
}
;
expr: TOKEN { $$= $1;}
| TOK_LP expr TOK_RP { $$ = $2;
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
@$.first_line=0; @$.last_line=0;
DESTROY($1); DESTROY($3); }
| expr TOK_OR expr { $$ = op_or ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_AND expr { $$ = op_and ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_EQ expr { $$ = op_eq ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_GT expr { $$ = op_gt ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_LT expr { $$ = op_lt ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_GE expr { $$ = op_ge ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_LE expr { $$ = op_le ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_NE expr { $$ = op_ne ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_PLUS expr { $$ = op_plus ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_MINUS expr { $$ = op_minus ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| TOK_MINUS expr %prec TOK_COMPL { $$ = op_negate ($2);
DESTROY($1);
@$.first_column = @1.first_column; @$.last_column = @2.last_column;
@$.first_line=0; @$.last_line=0;}
| TOK_COMPL expr { $$ = op_compl ($2);
DESTROY($1);
@$.first_column = @1.first_column; @$.last_column = @2.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_MULT expr { $$ = op_times ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_DIV expr { $$ = op_div ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_MOD expr { $$ = op_rem ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_COLON expr { $$ = op_colon ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_EQTILDE expr { $$ = op_eqtilde ($1, $3);
DESTROY($2);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
| expr TOK_COND expr TOK_COLONCOLON expr { $$ = op_cond ($1, $3, $5);
DESTROY($2);
DESTROY($4);
@$.first_column = @1.first_column; @$.last_column = @3.last_column;
@$.first_line=0; @$.last_line=0;}
;
@ -281,6 +308,7 @@ free_value (struct val *vp)
}
if (vp->type == AST_EXPR_string || vp->type == AST_EXPR_numeric_string)
free (vp->u.s);
free(vp);
}