Generalized binding syntax overhaul: only two new binders: `() and `{},

guessing the binding name by default and making all generalized
variables implicit. At the same time, continue refactoring of
Record/Class/Inductive etc.., getting rid of [VernacRecord]
definitively. The AST is not completely satisfying, but leaning towards 
Record/Class as restrictions of inductive (Arnaud, anyone ?).
Now, [Class] declaration bodies are either of the form [meth : type] or 
[{ meth : type ; ... }], distinguishing singleton "definitional" classes
and inductive classes based on records. The constructor syntax is
accepted ([meth1 : type1 | meth1 : type2]) but raises an error
immediately, as support for defining a class by a general inductive type
is not there yet (this is a bugfix!).


git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11679 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 7 insertions, 7 deletions

diff --git a/theories/Classes/SetoidDec.v b/theories/Classes/SetoidDec.v
index ab1fc1ca6..5b44f6848 100644
--- a/theories/Classes/SetoidDec.v
+++ b/theories/Classes/SetoidDec.v
@@ -26,12 +26,12 @@ Require Export Coq.Classes.SetoidClass.
 
 Require Import Coq.Logic.Decidable.
 
-Class DecidableSetoid [ S : Setoid A ] :=
+Class DecidableSetoid `(S : Setoid A) :=
   setoid_decidable : forall x y : A, decidable (x == y).
 
 (** The [EqDec] class gives a decision procedure for a particular setoid equality. *)
 
-Class (( S : Setoid A )) => EqDec :=
+Class EqDec `(S : Setoid A) :=
   equiv_dec : forall x y : A, { x == y } + { x =/= y }.
 
 (** We define the [==] overloaded notation for deciding equality. It does not take precedence
@@ -51,7 +51,7 @@ Open Local Scope program_scope.
 
 (** Invert the branches. *)
 
-Program Definition nequiv_dec [ EqDec A ] (x y : A) : { x =/= y } + { x == y } := swap_sumbool (x == y).
+Program Definition nequiv_dec `{EqDec A} (x y : A) : { x =/= y } + { x == y } := swap_sumbool (x == y).
 
 (** Overloaded notation for inequality. *)
 
@@ -59,10 +59,10 @@ Infix "=/=" := nequiv_dec (no associativity, at level 70).
 
 (** Define boolean versions, losing the logical information. *)
 
-Definition equiv_decb [ EqDec A ] (x y : A) : bool :=
+Definition equiv_decb `{EqDec A} (x y : A) : bool :=
   if x == y then true else false.
 
-Definition nequiv_decb [ EqDec A ] (x y : A) : bool :=
+Definition nequiv_decb `{EqDec A} (x y : A) : bool :=
   negb (equiv_decb x y).
 
 Infix "==b" := equiv_decb (no associativity, at level 70).
@@ -94,7 +94,7 @@ Program Instance unit_eqdec : EqDec (eq_setoid unit) :=
     reflexivity.
   Qed.
 
-Program Instance prod_eqdec [ ! EqDec (eq_setoid A), ! EqDec (eq_setoid B) ] : EqDec (eq_setoid (prod A B)) :=
+Program Instance prod_eqdec `(! EqDec (eq_setoid A), ! EqDec (eq_setoid B)) : EqDec (eq_setoid (prod A B)) :=
   equiv_dec x y := 
     let '(x1, x2) := x in 
     let '(y1, y2) := y in 
@@ -109,7 +109,7 @@ Program Instance prod_eqdec [ ! EqDec (eq_setoid A), ! EqDec (eq_setoid B) ] : E
 
 Require Import Coq.Program.FunctionalExtensionality.
 
-Program Instance bool_function_eqdec [ ! EqDec (eq_setoid A) ] : EqDec (eq_setoid (bool -> A)) :=
+Program Instance bool_function_eqdec `(! EqDec (eq_setoid A)) : EqDec (eq_setoid (bool -> A)) :=
   equiv_dec f g := 
     if f true == g true then
       if f false == g false then in_left