22878 2013-08-04 13:40:13 +0000 [XSLT 3.0] Compatibility of overriding functions 2014-10-24 13:59:36 +0000 1 1 1 Unclassified XPath / XQuery / XSLT XSLT 3.0 Working drafts PC All CLOSED FIXED P2 normal --- 1 mike mike public-qt-comments oldest_to_newest 91622 0 mike 2013-08-04 13:40:13 +0000 I think the rules for overriding functions in xsl:override should add the constraints: (a) if the overridden function has identity-sensitive="no" then the overriding function must have identity-sensitive="no" (b) if the overridden function has override-extension-functions="no" then the overriding function must have override-extension-functions="no". Justification: (a) the compiler may make optimizations based on the fact that a function was specified to not be identity-sensitive; for example, it may move function calls out of a loop. Overriding this attribute would invalidate such optimizations. (b) when the compiler sees override-extension-functions="no" it should be able to generate a call to an extension function (ignoring the user-defined function) if one is available; since this may usefully involve generating inline code for the extension function, it should not have to reconsider this decision if the user-defined function is overridden in another package. 93658 1 mike 2013-09-23 17:13:09 +0000 MK and Abel reviewed this proposal and agreed the change was necessary. 113698 2 mike 2014-10-24 13:59:36 +0000 Note that part of this was reverted by a decision on bug #27125