 23 Nov, 2016 1 commit


Robbert Krebbers authored

 22 Nov, 2016 1 commit


Ralf Jung authored

 20 Nov, 2016 1 commit


Robbert Krebbers authored

 10 Nov, 2016 1 commit


Robbert Krebbers authored
This way we avoid the env_cbv tactic unfolding string related stuff that appears in the goal and hypotheses of the proof mode.

 03 Nov, 2016 1 commit


Robbert Krebbers authored
The old choice for ★ was a arbitrary: the precedence of the ASCII asterisk * was fixed at a wrong level in Coq, so we had to pick another symbol. The ★ was a random choice from a unicode chart. The new symbol ∗ (as proposed by David Swasey) corresponds better to conventional practise and matches the symbol we use on paper.

 27 Oct, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored
Since env_cbv does not unfold these apps, we should do it ourselves, to avoid ending up with partially evaluated terms.

 26 Oct, 2016 1 commit


Robbert Krebbers authored
This fixes issue 39.

 25 Oct, 2016 6 commits


Robbert Krebbers authored

Robbert Krebbers authored
There are now two proof mode tactics for dealing with modalities:  `iModIntro` : introduction of a modality  `iMod pm_trm as (x1 ... xn) "ipat"` : eliminate a modality The behavior of these tactics can be controlled by instances of the `IntroModal` and `ElimModal` type class. We have declared instances for later, except 0, basic updates and fancy updates. The tactic `iMod` is flexible enough that it can also eliminate an updates around a weakest pre, and so forth. The corresponding introduction patterns of these tactics are `!>` and `>`. These tactics replace the tactics `iUpdIntro`, `iUpd` and `iTimeless`. Source of backwards incompatability: the introduction pattern `!>` is used for introduction of arbitrary modalities. It used to introduce laters by stripping of a later of each hypotheses.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
And also rename the corresponding proof mode tactics.

 13 Oct, 2016 1 commit


Ralf Jung authored

 05 Oct, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored

 27 Sep, 2016 4 commits


Robbert Krebbers authored
Used in iRevert, iClear, iFrame, and for generalizing the IH in iInduction and iLöb.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
As proposed by JH Jourdan in issue 34.

 20 Sep, 2016 4 commits


Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
Before, it failed when these tactics were invoked with persistent hypotheses. The new behavior is more convenient when using these tactics to build other tactics.

 19 Sep, 2016 5 commits


Robbert Krebbers authored
This comment mostly addresses issue #34. There are still some issues:  For iLöb we can write `iLöb (x1 .. xn) as "IH"` to revert x1 .. xn before performing Löb induction. An analogue notation for iInduction results in parsing conflicts.  The names of the induction hypotheses in the Coq intro pattern are ignored. Instead, when using `iInduction x as pat "IH"` the induction hypotheses are given fresh names starting with "IH". The problem here is that the names in the introduction pattern are idents, whereas the induction hypotheses are inserted into the proof mode context, and thus need to have strings as names.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
This closes issue 32.

Robbert Krebbers authored
This solves issue 33.

 09 Sep, 2016 3 commits


Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
Before this commit, given "HP" : P and "H" : P ★ Q with Q persistent, one could write: iSpecialize ("H" with "#HP") to eliminate the wand in "H" while keeping the resource "HP". The lemma: own_valid : own γ x ⊢ ✓ x was the prototypical example where this pattern (using the #) was used. However, the pattern was too limited. For example, given "H" : P₁ ★ P₂ ★ Q", one could not write iSpecialize ("H" with "#HP₁") because P₂ ★ Q is not persistent, even when Q is. So, instead, this commit introduces the following tactic: iSpecialize pm_trm as # which allows one to eliminate implications and wands while being able to use all hypotheses to prove the premises, as well as being able to use all hypotheses to prove the resulting goal. In the case of iDestruct, we now check whether all branches of the introduction pattern start with an `#` (moving the hypothesis to the persistent context) or `%` (moving the hypothesis to the pure Coq context). If this is the case, we allow one to use all hypotheses for proving the premises, as well as for proving the resulting goal.

 05 Sep, 2016 1 commit


Robbert Krebbers authored

 30 Aug, 2016 1 commit


Robbert Krebbers authored

 25 Aug, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored
Following the time anology of later, the stepindex 0 corresponds does not correspond to 'now', but rather to the end of time (i.e. 'last').

 24 Aug, 2016 1 commit


Robbert Krebbers authored
This is allowed as long as one of the conjuncts is thrown away (i.e. is a wildcard _ in the introduction pattern). It corresponds to the principle of "external choice" in linear logic.

 08 Aug, 2016 1 commit


Robbert Krebbers authored
In most cases it is a temporary whose name is useless and just clutters the error message.

 05 Aug, 2016 1 commit


Robbert Krebbers authored
This fixes issue #25.
