major improvements to flattener; almost finished now

[coq-hetmet.git] / src / HaskCoreVars.v

diff --git a/src/HaskCoreVars.v b/src/HaskCoreVars.v
index 954dfc5..d158f05 100644 (file)
--- a/src/HaskCoreVars.v
+++ b/src/HaskCoreVars.v
@@ -6,12 +6,26 @@ Generalizable All Variables.
 Require Import Preamble.
 Require Import General.
 Require Import Coq.Strings.String.
+Require Import HaskLiteralsAndTyCons.
 
 (* GHC uses a single type for expression variables, type variables, and coercion variables; this is that type *)
-Variable CoreVar          : Type.                                               Extract Inlined Constant CoreVar    => "Var.Var".
-Variable coreVar_eq       : forall (a b:CoreVar), sumbool (a=b) (not (a=b)).    Extract Inlined Constant coreVar_eq => "(==)".
-Variable coreVarToString  : CoreVar      -> string.  Extract Inlined Constant coreVarToString         => "outputableToString".
-Axiom    coreVar_eq_refl  : forall v, (coreVar_eq v v) = (left _ (refl_equal v)).
-Instance CoreVarEqDecidable : EqDecidable CoreVar := { eqd_dec            := coreVar_eq }.
-Instance CoreVarToString : ToString CoreVar :=
-  { toString := coreVarToString }.
+Variable CoreVar            : Type.                                               Extract Inlined Constant CoreVar    => "Var.Var".
+Variable coreVar_eq         : forall (a b:CoreVar), sumbool (a=b) (not (a=b)).    Extract Inlined Constant coreVar_eq => "(==)".
+Variable coreVarToString    : CoreVar      -> string.             Extract Inlined Constant coreVarToString => "outputableToString".
+Instance CoreVarEqDecidable : EqDecidable CoreVar := { eqd_dec  := coreVar_eq      }.
+Instance CoreVarToString    : ToString CoreVar    := { toString := coreVarToString }.
+
+Variable CoreTyCon       : Type.                      Extract Inlined Constant CoreTyCon            => "TyCon.TyCon".
+
+(* because Haskell's 3-tuples (triples) are distinct from both ((x,y),z) and (x,(y,z)), we need a new type: *)
+Inductive triple {A B C:Type} :=
+| mkTriple : A -> B -> C -> triple.
+Notation "a ** b ** c" := (mkTriple a b c) (at level 20).
+Extract Inductive triple => "(,,)" [ "(,,)" ].
+
+Inductive CoreAltCon :=
+| DataAlt : CoreDataCon -> CoreAltCon
+| LitAlt  : HaskLiteral -> CoreAltCon
+| DEFAULT :                CoreAltCon.
+Extract Inductive CoreAltCon =>
+  "CoreSyn.AltCon" [ "CoreSyn.DataAlt" "CoreSyn.LitAlt" "CoreSyn.DEFAULT" ].