Re: [PATCH 08/10] perf, tools: Add a simple expression parser for JSON

Jiri Olsa
2017-02-08T11:31:18Z

On Fri, Jan 27, 2017 at 06:03:43PM -0800, Andi Kleen wrote:

SNIP

> diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
> new file mode 100644
> index 000000000000..3b99fa282059
> --- /dev/null
> +++ b/tools/perf/util/expr.h
> @@ -0,0 +1,23 @@
> +#ifndef PARSE_CTX_H
> +#define PARSE_CTX_H 1
> +
> +#define MAX_PARSE_ID 2
> +
> +struct parse_id {
> + const char *name;
> + double val;
> +};
> +
> +struct parse_ctx {
> + int num_ids;
> + struct parse_id ids[MAX_PARSE_ID];
> +};
> +
> +void expr_ctx_init(struct parse_ctx *ctx);
> +void expr_add_id(struct parse_ctx *ctx, const char *id, double val);
> +#ifndef IN_EXPR_Y
> +int expr_parse(double *final_val, struct parse_ctx *ctx, const char **pp);
> +#endif
> +int expr_find_other(const char *p, const char *one, const char **other);

it all looks ok, just please follow the interface function
name style we try to keep with struct name separated with __

thanks,
jirka