perf/util/expr.y

27 	struct ids {
29 		 * When creating ids, holds the working set of event ids. NULL
32 		struct hashmap *ids;
34 		 * The metric value. When not creating ids this is the value
36 		 * creating ids the value is either a constant or BOTTOM. NAN is
41 	} ids;
56 %type <ids> expr if_expr
57 %destructor { ids__free($$.ids); } <ids>
70  * During compute ids, the special "bottom" value uses NAN to represent the set
75 /* During computing ids, does val represent a constant (non-BOTTOM) value? */
81 static struct ids union_expr(struct ids ids1, struct ids ids2)
83 	struct ids result = {
85 		.ids = ids__union(ids1.ids, ids2.ids),
90 static struct ids handle_id(struct expr_parse_ctx *ctx, char *id,
93 	struct ids result;
108 		result.ids = NULL;
116 		result.ids = ids__new();
117 		if (!result.ids || ids__insert(result.ids, id)) {
126  * If we're not computing ids or $1 and $3 are constants, compute the new
127  * constant value using OP. Its invariant that there are no ids.  If computing
128  * ids for non-constants union the set of IDs that must be computed.
132 		assert(LHS.ids == NULL);				\
133 		assert(RHS.ids == NULL);				\
139 		RESULT.ids = NULL;					\
150 		ctx->ids = ids__union($1.ids, ctx->ids);
165 		$$.ids = $5.ids;
166 		ids__free($1.ids);
167 		ids__free($3.ids);
170 		 * If ids aren't computed then treat the expression as true. If
171 		 * ids are being computed and the IF expr is a non-zero
175 		$$.ids = $1.ids;
176 		ids__free($3.ids);
177 		ids__free($5.ids);
184 		$$.ids = NULL;
185 		ids__free($1.ids);
186 		ids__free($3.ids);
187 		ids__free($5.ids);
202 	$$.ids = NULL;
209 	$$.ids = NULL;
215 	$$.ids = NULL;
221 		assert($1.ids == NULL);
222 		assert($3.ids == NULL);
223 		$$.ids = NULL;
226 		assert($1.ids == NULL);
231 			$$.ids = NULL;
232 			ids__free($3.ids);
235 		assert($3.ids == NULL);
240 			$$.ids = NULL;
241 			ids__free($1.ids);
250 		assert($1.ids == NULL);
251 		assert($3.ids == NULL);
253 		$$.ids = NULL;
255 		assert($1.ids == NULL);
260 			$$.ids = NULL;
261 			ids__free($3.ids);
264 		assert($3.ids == NULL);
269 			$$.ids = NULL;
270 			ids__free($1.ids);
279 		assert($1.ids == NULL);
280 		assert($3.ids == NULL);
282 		$$.ids = NULL;
296 		assert($3.ids == NULL);
298 			ids__free($1.ids);
300 		$$.ids = NULL;
302 		assert($1.ids == NULL);
303 		assert($3.ids == NULL);
305 		$$.ids = NULL;
317 		assert($1.ids == NULL);
318 		assert($3.ids == NULL);
320 		$$.ids = NULL;
333 		assert($5.ids == NULL);
335 		$$.ids = NULL;
336 		ids__free($3.ids);
338 		assert($3.ids == NULL);
339 		assert($5.ids == NULL);
341 		$$.ids = NULL;
350 	$$.ids = $2.ids;
360 		$$.ids = NULL;
369 		$$.ids = NULL;
377 	$$.ids = NULL;