 14 Mar, 2017 8 commits


Robbert Krebbers authored

Robbert Krebbers authored
This has some advantages:  Evaluation contexts behave like a proper "Huet's zipper", and thus: + We no longer need to reverse the list of evaluation context items in the `reshape_expr` tactic. + The `fill` function becomes tailrecursive.  It gives rise to more definitional equalities in simulation proofs using binary logical relations proofs. In the case of binary logical relations, we simulate an expressions in some ambient context, i.e. `fill K e`. Now, whenever we reshape `e` by turning it into `fill K' e'`, we end up with `fill K (fill K' e')`. In order to use the rules for the expression that is being simulated, we need to turn `fill K (fill K' e')` into `fill K'' e'` for some `K'`. In case of the old `foldr`based approach, we had to rewrite using the lemma `fill_app` to achieve that. However, in case of the old `foldl`based `fill`, we have that `fill K (fill K' e')` is definitionally equal to `fill (K' ++ K) e'` provided that `K'` consists of a bunch of `cons`es (which is always the case, since we obtained `K'` by reshaping `e`). Note that this change hardly affected `heap_lang`. Only the proof of `atomic_correct` broke. I fixed this by proving a more general lemma `ectxi_language_atomic` about `ectxi`languages, which should have been there in the first place.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
 Support for a `//` modifier to close the goal using `done`.  Support for framing in the `[#]` specialization pattern for persistent premises, i.e. `[# $H1 $H2]`  Add new "auto framing patterns" `[$]`, `[# $]` and `>[$]` that will try to solve the premise by framing. Hypothesis that are not framed are carried over to the next goal.

Ralf Jung authored

Ralf Jung authored

 12 Mar, 2017 1 commit


Ralf Jung authored

 11 Mar, 2017 2 commits


Robbert Krebbers authored

Robbert Krebbers authored

 10 Mar, 2017 4 commits
 09 Mar, 2017 10 commits


Robbert Krebbers authored
Also, make the setup of IntoLaterN more consistent with that of WandWeaken. Maybe, we should do something similar for other proof mode classes too.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
Now, we never need to unfold LimitPreserving in LambdaRust, and hence the entails_lim tactic is no longer needed.

Ralf Jung authored

Ralf Jung authored

Ralf Jung authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

 07 Mar, 2017 1 commit


Robbert Krebbers authored

 06 Mar, 2017 1 commit


Ralf Jung authored

 01 Mar, 2017 4 commits
 24 Feb, 2017 1 commit


Robbert Krebbers authored

 23 Feb, 2017 1 commit


Ralf Jung authored

 22 Feb, 2017 7 commits



Ralf Jung authored

Robbert Krebbers authored
There is no need to restrict the type class using Hint Mode, we have a default instance that will always be used first. In case of evars, the default instance should apply. The reason for this change is that `iAssumption` should be able to prove `H : ?e  P` and `H : P  ?e`. The former Hint Mode prevented it from doing that.

Robbert Krebbers authored

Robbert Krebbers authored

Ralf Jung authored

Robbert Krebbers authored
I probably tested against a wrong version. This reverts commit 02bc52b4.
