1. 04 Oct, 2018 1 commit
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  3. 25 Apr, 2018 1 commit
  4. 07 Feb, 2018 1 commit
  5. 23 Dec, 2017 1 commit
  6. 04 Dec, 2017 1 commit
  7. 13 Nov, 2017 1 commit
  8. 25 Oct, 2017 2 commits
  9. 25 Sep, 2017 1 commit
  10. 17 Sep, 2017 1 commit
  11. 09 Sep, 2017 1 commit
  12. 24 Mar, 2017 1 commit
  13. 27 Jan, 2017 1 commit
  14. 09 Jan, 2017 1 commit
  15. 06 Jan, 2017 1 commit
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  17. 03 Jan, 2017 1 commit
  18. 09 Dec, 2016 3 commits
  19. 08 Dec, 2016 1 commit
  20. 06 Dec, 2016 2 commits
  21. 22 Nov, 2016 1 commit
  22. 17 Nov, 2016 1 commit
  23. 03 Nov, 2016 1 commit
    • Robbert Krebbers's avatar
      Use symbol ∗ for separating conjunction. · cc31476d
      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.
      cc31476d
  24. 01 Nov, 2016 4 commits
  25. 27 Oct, 2016 2 commits
  26. 25 Oct, 2016 2 commits
    • Robbert Krebbers's avatar
      Generalize update tactics into iMod and iModIntro for modalities. · fc30ca08
      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.
      fc30ca08
    • Robbert Krebbers's avatar
      Rename rvs -> bupd (basic update), pvs -> fupd (fancy update). · 1b85d654
      Robbert Krebbers authored
      And also rename the corresponding proof mode tactics.
      1b85d654
  27. 06 Oct, 2016 1 commit
  28. 05 Oct, 2016 1 commit
  29. 09 Sep, 2016 1 commit
    • Robbert Krebbers's avatar
      Support for specialization of P₁ -★ .. -★ Pₙ -★ Q where Q is persistent. · 090aaea3
      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.
      090aaea3
  30. 06 Sep, 2016 2 commits