[isabelle-dev] NEWS: method facts
makarius at sketis.net
Wed Jun 8 19:46:00 CEST 2016
*** Isar ***
* Proof methods may refer to the main facts via the dynamic fact
"method_facts". This is particularly useful for Eisbach method
* Eisbach provides method "use" to modify the main facts of a given
method expression, e.g.
(use facts in simp)
(use facts in ‹simp add: ...›)
This refers to Isabelle/29fe61d5f748.
An example application is here in AFP:
date: Wed Jun 08 19:41:05 2016 +0200
clarified handling of method_facts, like SIMPLE_METHOD;
There are further possibilities for "use", e.g. to eliminate auxiliary
"-" or "insert" steps, notably:
qed (insert a, auto) ~> qed (use a in auto)
The plan to support (use [[simproc a]] in simp) did not work out yet: I
need to rework the parsers for thms and attrib first.
More information about the isabelle-dev