expr.h (2000B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef PARSE_CTX_H 3#define PARSE_CTX_H 1 4 5// There are fixes that need to land upstream before we can use libbpf's headers, 6// for now use our copy unconditionally, since the data structures at this point 7// are exactly the same, no problem. 8//#ifdef HAVE_LIBBPF_SUPPORT 9//#include <bpf/hashmap.h> 10//#else 11#include "util/hashmap.h" 12//#endif 13 14struct metric_ref; 15 16struct expr_parse_ctx { 17 struct hashmap *ids; 18 int runtime; 19}; 20 21struct expr_id_data; 22 23struct expr_scanner_ctx { 24 int runtime; 25}; 26 27struct hashmap *ids__new(void); 28void ids__free(struct hashmap *ids); 29int ids__insert(struct hashmap *ids, const char *id); 30/* 31 * Union two sets of ids (hashmaps) and construct a third, freeing ids1 and 32 * ids2. 33 */ 34struct hashmap *ids__union(struct hashmap *ids1, struct hashmap *ids2); 35 36struct expr_parse_ctx *expr__ctx_new(void); 37void expr__ctx_clear(struct expr_parse_ctx *ctx); 38void expr__ctx_free(struct expr_parse_ctx *ctx); 39 40void expr__del_id(struct expr_parse_ctx *ctx, const char *id); 41int expr__add_id(struct expr_parse_ctx *ctx, const char *id); 42int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val); 43int expr__add_id_val_source_count(struct expr_parse_ctx *ctx, const char *id, 44 double val, int source_count); 45int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref); 46int expr__get_id(struct expr_parse_ctx *ctx, const char *id, 47 struct expr_id_data **data); 48bool expr__subset_of_ids(struct expr_parse_ctx *haystack, 49 struct expr_parse_ctx *needles); 50int expr__resolve_id(struct expr_parse_ctx *ctx, const char *id, 51 struct expr_id_data **datap); 52 53int expr__parse(double *final_val, struct expr_parse_ctx *ctx, 54 const char *expr); 55 56int expr__find_ids(const char *expr, const char *one, 57 struct expr_parse_ctx *ids); 58 59double expr_id_data__value(const struct expr_id_data *data); 60double expr_id_data__source_count(const struct expr_id_data *data); 61double expr__get_literal(const char *literal); 62 63#endif