54 lines
1.8 KiB
OCaml
54 lines
1.8 KiB
OCaml
(**************************************************************************)
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(* *)
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(* Heptagon *)
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(* *)
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(* Author : Marc Pouzet *)
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(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
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(* *)
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(**************************************************************************)
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(** This module simplify static expression of the program and deal with :
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(0^n)[3] ==> 0
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[3,4,5][2] ==> 5
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*)
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open Names
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open Types
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open Static
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open Obc
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open Obc_mapfold
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let extvaluedesc funs acc evd = match evd with
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| Warray (ev,e) ->
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let ev, acc = extvalue_it funs acc ev in
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(match ev.w_desc with
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| Wconst se ->
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let se = simplify QualEnv.empty se in
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(match se.se_desc with
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| Sarray_power (sv, [_]) ->
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Wconst sv, acc
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| Sarray_power (sv, _::idx) ->
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Wconst { se with se_desc = Sarray_power (sv, idx)}, acc
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| Sarray sv_l ->
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(match e.e_desc with
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| Eextvalue { w_desc = Wconst i } ->
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(try
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let indice = int_of_static_exp QualEnv.empty i in
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Wconst (Misc.nth_of_list (indice+1) sv_l), acc
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with _ -> raise Errors.Fallback)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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let program p =
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let funs = { defaults with evdesc = extvaluedesc } in
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let p, _ = program_it funs [] p in
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p
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