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author | 2014-11-16 12:52:13 +0100 | |
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committer | 2014-11-16 15:22:36 +0100 | |
commit | 364decf59c14ec8a672d3c4d46fa1939ea0e52d3 (patch) | |
tree | fd774da7b8f5b98f7e8fe47a2065881e6bc85aee /grammar | |
parent | 4c576db3ed40328caa37144eb228365f497293e5 (diff) |
Enforcing a stronger difference between the two syntaxes "simpl
reference" and "simpl pattern" in the code (maybe we should have
merged them instead, but I finally decided to enforce their
difference, even if some compatibility is to be preversed - the idea
is that at some time "simpl reference" would only call a weak-head
simpl (or eventually cbn), leading e.g. to reduce 2+n into S(1+n)
rather than S(S(n)) which could be useful for better using induction
hypotheses.
In the process we also implement the following:
- 'simpl "+"' is accepted to reduce all applicative subterms whose
head symbol is written "+" (in the toplevel scope); idem for
vm_compute and native_compute
- 'simpl reference' works even if reference has maximally inserted
implicit arguments (this solves the "simpl fst" incompatibility)
- compatibility of ltac expressions referring to vm_compute and
native_compute with functor application should now work (i.e.
vm_compute and native_compute are now taken into account in
tacsubst.ml)
- for compatibility, "simpl eq" (assuming no maximal implicit args in
eq) or "simpl @eq" to mean "simpl (eq _ _)" are still allowed.
By the way, is "mul" on nat defined optimally? "3*n" simplifies to
"n+(n+(n+0))". Are there some advantages of this compared to have it
simplified to "n+n+n" (i.e. to "(n+n)+n").
Diffstat (limited to 'grammar')
-rw-r--r-- | grammar/q_coqast.ml4 | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/grammar/q_coqast.ml4 b/grammar/q_coqast.ml4 index 02becc496..d6d13375e 100644 --- a/grammar/q_coqast.ml4 +++ b/grammar/q_coqast.ml4 @@ -46,6 +46,10 @@ let mlexpr_of_reference = function | Libnames.Ident (loc,id) -> let loc = of_coqloc loc in <:expr< Libnames.Ident $dloc$ $mlexpr_of_ident id$ >> +let mlexpr_of_union f g = function + | Util.Inl a -> <:expr< Util.Inl $f a$ >> + | Util.Inr b -> <:expr< Util.Inr $g b$ >> + let mlexpr_of_located f (loc,x) = let loc = of_coqloc loc in <:expr< ($dloc$, $f x$) >> @@ -184,10 +188,15 @@ let rec mlexpr_of_constr = function let mlexpr_of_occ_constr = mlexpr_of_occurrences mlexpr_of_constr +let mlexpr_of_occ_ref_or_constr = + mlexpr_of_occurrences + (mlexpr_of_union + (mlexpr_of_by_notation mlexpr_of_reference) mlexpr_of_constr) + let mlexpr_of_red_expr = function | Genredexpr.Red b -> <:expr< Genredexpr.Red $mlexpr_of_bool b$ >> | Genredexpr.Hnf -> <:expr< Genredexpr.Hnf >> - | Genredexpr.Simpl o -> <:expr< Genredexpr.Simpl $mlexpr_of_option mlexpr_of_occ_constr o$ >> + | Genredexpr.Simpl o -> <:expr< Genredexpr.Simpl $mlexpr_of_option mlexpr_of_occ_ref_or_constr o$ >> | Genredexpr.Cbv f -> <:expr< Genredexpr.Cbv $mlexpr_of_red_flags f$ >> | Genredexpr.Cbn f -> @@ -203,8 +212,8 @@ let mlexpr_of_red_expr = function | Genredexpr.Pattern l -> let f = mlexpr_of_list mlexpr_of_occ_constr in <:expr< Genredexpr.Pattern $f l$ >> - | Genredexpr.CbvVm o -> <:expr< Genredexpr.CbvVm $mlexpr_of_option mlexpr_of_occ_constr o$ >> - | Genredexpr.CbvNative o -> <:expr< Genredexpr.CbvNative $mlexpr_of_option mlexpr_of_occ_constr o$ >> + | Genredexpr.CbvVm o -> <:expr< Genredexpr.CbvVm $mlexpr_of_option mlexpr_of_occ_ref_or_constr o$ >> + | Genredexpr.CbvNative o -> <:expr< Genredexpr.CbvNative $mlexpr_of_option mlexpr_of_occ_ref_or_constr o$ >> | Genredexpr.ExtraRedExpr s -> <:expr< Genredexpr.ExtraRedExpr $mlexpr_of_string s$ >> |