diff options
Diffstat (limited to 'tools/perf/util/expr.y')
| -rw-r--r-- | tools/perf/util/expr.y | 41 |
1 files changed, 18 insertions, 23 deletions
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index cd17486c1c5d..bf3e898e3055 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -27,6 +27,7 @@ %token EXPR_PARSE EXPR_OTHER EXPR_ERROR %token <num> NUMBER %token <str> ID +%destructor { free ($$); } <str> %token MIN MAX IF ELSE SMT_ON %left MIN MAX IF %left '|' @@ -46,19 +47,6 @@ static void expr_error(double *final_val __maybe_unused, pr_debug("%s\n", s); } -static int lookup_id(struct expr_parse_ctx *ctx, char *id, double *val) -{ - int i; - - for (i = 0; i < ctx->num_ids; i++) { - if (!strcasecmp(ctx->ids[i].name, id)) { - *val = ctx->ids[i].val; - return 0; - } - } - return -1; -} - %} %% @@ -72,15 +60,10 @@ all_other: all_other other other: ID { - if (ctx->num_ids + 1 >= EXPR_MAX_OTHER) { - pr_err("failed: way too many variables"); - YYABORT; - } - - ctx->ids[ctx->num_ids++].name = $1; + expr__add_id(ctx, $1, 0.0); } | -MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/' | '%' | '(' | ')' +MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/' | '%' | '(' | ')' | ',' all_expr: if_expr { *final_val = $1; } @@ -92,10 +75,12 @@ if_expr: ; expr: NUMBER - | ID { if (lookup_id(ctx, $1, &$$) < 0) { + | ID { if (expr__get_id(ctx, $1, &$$)) { pr_debug("%s not found\n", $1); + free($1); YYABORT; } + free($1); } | expr '|' expr { $$ = (long)$1 | (long)$3; } | expr '&' expr { $$ = (long)$1 & (long)$3; } @@ -103,8 +88,18 @@ expr: NUMBER | expr '+' expr { $$ = $1 + $3; } | expr '-' expr { $$ = $1 - $3; } | expr '*' expr { $$ = $1 * $3; } - | expr '/' expr { if ($3 == 0) YYABORT; $$ = $1 / $3; } - | expr '%' expr { if ((long)$3 == 0) YYABORT; $$ = (long)$1 % (long)$3; } + | expr '/' expr { if ($3 == 0) { + pr_debug("division by zero\n"); + YYABORT; + } + $$ = $1 / $3; + } + | expr '%' expr { if ((long)$3 == 0) { + pr_debug("division by zero\n"); + YYABORT; + } + $$ = (long)$1 % (long)$3; + } | '-' expr %prec NEG { $$ = -$2; } | '(' if_expr ')' { $$ = $2; } | MIN '(' expr ',' expr ')' { $$ = $3 < $5 ? $3 : $5; } |