1 files changed, 62 insertions, 0 deletions
diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
new file mode 100644
index 000000000..d6c1668dc
--- /dev/null
+++ b/tools/perf/util/expr.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef PARSE_CTX_H
+#define PARSE_CTX_H 1
+
+#ifdef HAVE_LIBBPF_SUPPORT
+#include <bpf/hashmap.h>
+#else
+#include "util/hashmap.h"
+#endif
+
+struct metric_ref;
+
+struct expr_scanner_ctx {
+	char *user_requested_cpu_list;
+	int runtime;
+	bool system_wide;
+};
+
+struct expr_parse_ctx {
+	struct hashmap	*ids;
+	struct expr_scanner_ctx sctx;
+};
+
+struct expr_id_data;
+
+struct hashmap *ids__new(void);
+void ids__free(struct hashmap *ids);
+int ids__insert(struct hashmap *ids, const char *id);
+/*
+ * Union two sets of ids (hashmaps) and construct a third, freeing ids1 and
+ * ids2.
+ */
+struct hashmap *ids__union(struct hashmap *ids1, struct hashmap *ids2);
+
+struct expr_parse_ctx *expr__ctx_new(void);
+void expr__ctx_clear(struct expr_parse_ctx *ctx);
+void expr__ctx_free(struct expr_parse_ctx *ctx);
+
+void expr__del_id(struct expr_parse_ctx *ctx, const char *id);
+int expr__add_id(struct expr_parse_ctx *ctx, const char *id);
+int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val);
+int expr__add_id_val_source_count(struct expr_parse_ctx *ctx, const char *id,
+				double val, int source_count);
+int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref);
+int expr__get_id(struct expr_parse_ctx *ctx, const char *id,
+		 struct expr_id_data **data);
+bool expr__subset_of_ids(struct expr_parse_ctx *haystack,
+			 struct expr_parse_ctx *needles);
+int expr__resolve_id(struct expr_parse_ctx *ctx, const char *id,
+		     struct expr_id_data **datap);
+
+int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
+		const char *expr);
+
+int expr__find_ids(const char *expr, const char *one,
+		   struct expr_parse_ctx *ids);
+
+double expr_id_data__value(const struct expr_id_data *data);
+double expr_id_data__source_count(const struct expr_id_data *data);
+double expr__get_literal(const char *literal, const struct expr_scanner_ctx *ctx);
+
+#endif