1. 21 Mar, 2017 4 commits
  2. 20 Mar, 2017 5 commits
  3. 16 Mar, 2017 10 commits
  4. 15 Mar, 2017 13 commits
  5. 14 Mar, 2017 8 commits
    • Robbert Krebbers's avatar
      Misc properties about languages. · 4e1bdcc7
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
      Shorten a lemma. · 3bdeb62f
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
      Merge branch 'fill_foldl' · 7047a278
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
      Define `fill` in terms of a `foldl` over `fill_item`. · 6fc9c27e
      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 tail-recursive.
      - 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's avatar
      Merge branch 'more_spec_patterns' · 8b10155e
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
      Update proof mode docs. · 805e564a
      Robbert Krebbers authored
    • Robbert Krebbers's avatar
    • Robbert Krebbers's avatar
      Extend specialization patterns. · 87a8a19c
      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.