22769 2013-07-23 10:21:08 +0000 insertRule() should parse generic qualified rules / at-rules further 2013-08-26 14:29:02 +0000 1 1 1 Unclassified CSS CSSOM unspecified PC Linux RESOLVED FIXED P2 normal --- 1 simon.sapin zcorpan zcorpan public-css-bugzilla oldest_to_newest 91124 0 simon.sapin 2013-07-23 10:21:08 +0000 The CSSStyleSheet and CSSGroupingRule interfaces both have a insertRule() method that refers (indirectly) to the "Parse a rule" algorithm of CSS Syntax. The result of "Parse a rule" (when it’s not a syntax error) is a generic qualified rule or at-rule whose prelude and block can contain anything. These concepts of generic rules exist for separation of concerns so that Syntax does not have to know about Selectors, every CSS at-rule, etc. For example, a valid qualified rule can be an invalid style rule if its prelude is an invalid list of selectors. Perhaps I’m splitting hairs, but I think that CSSOM is missing a step where the results from Syntax are parsed further into specific rules, as defined in their respective specification. This can return a syntax error even if Syntax’s "Parse a rule" did not, in which case insertRule() should throw. 92573 1 zcorpan 2013-08-26 14:29:02 +0000 https://dvcs.w3.org/hg/csswg/rev/b47ea7ac01c7