Remove half-baked 'opacity' layer qualifier.

Author: graydon

doc/rust.texi

@@ -678,7 +678,6 @@ The keywords are:
 @tab @code{auto}
 @item @code{state}
 @tab @code{gc}
-@tab @code{abs}
 @tab @code{const}
 @tab @code{thread}
 @item @code{auth}

src/boot/fe/ast.ml

@@ -37,11 +37,6 @@ type layer =
   | LAYER_gc
 ;;
 
-type opacity =
-    OPA_transparent
-  | OPA_abstract
-;;
-
 type mutability =
     MUT_mutable
   | MUT_immutable
@@ -720,22 +715,6 @@ and fmt_layer_qual
   fmt_layer ff s;
   if s <> LAYER_value then fmt ff " ";
 
-and fmt_opacity
-    (ff:Format.formatter)
-    (opa:opacity)
-    : unit =
-  match opa with
-      OPA_transparent -> ()
-    | OPA_abstract -> fmt ff "abs"
-
-and fmt_opacity_qual
-    (ff:Format.formatter)
-    (op:opacity)
-    : unit =
-  fmt_opacity ff op;
-  if op <> OPA_transparent then fmt ff " ";
-
-
 and fmt_ty_fn
     (ff:Format.formatter)
     (ident_and_params:(ident * ty_param array) option)

src/boot/fe/item.ml

@@ -609,8 +609,7 @@ and parse_stmts_including_none (ps:pstate) : Ast.stmt array =
             spans ps stmts apos (Ast.STMT_join lval)
 
 
-       | STATE | GC
-       | ABS | NATIVE
+       | STATE | GC | NATIVE
        | MOD | OBJ | TAG | TYPE | FN | USE ->
           let items = ctxt "stmt: decl" parse_mod_item ps in
           let bpos = lexpos ps in
@@ -695,7 +694,6 @@ and parse_stmts_including_none (ps:pstate) : Ast.stmt array =
 
 and parse_ty_param (iref:int ref) (ps:pstate) : Ast.ty_param identified =
   let apos = lexpos ps in
-  let _ = Pexp.parse_opacity ps in
   let s = Pexp.parse_layer ps in
   let ident = Pexp.parse_ident ps in
   let i = !iref in
@@ -990,9 +988,8 @@ and parse_mod_item (ps:pstate)
 
     match peek ps with
 
-        STATE | GC | ABS
+        STATE | GC
       | TYPE | OBJ | TAG | FN | ITER ->
-          let _ = Pexp.parse_opacity ps in
           let layer = Pexp.parse_layer ps in
             begin
               match peek ps with

src/boot/fe/lexer.mll

@@ -95,8 +95,6 @@
                 ("claim", CLAIM);
                 ("prove", PROVE);
 
-                ("abs", ABS);
-
                 ("state", STATE);
                 ("gc", GC);
 

src/boot/fe/pexp.ml

@@ -140,11 +140,6 @@ and parse_optional_trailing_constrs (ps:pstate) : Ast.constrs =
       COLON -> (bump ps; parse_constrs ps)
     | _ -> [| |]
 
-and parse_opacity (ps:pstate) : Ast.opacity =
-  match peek ps with
-      ABS -> bump ps; Ast.OPA_abstract
-    |  _ -> Ast.OPA_transparent
-
 and parse_layer (ps:pstate) : Ast.layer =
   match peek ps with
       STATE -> bump ps; Ast.LAYER_state

src/boot/fe/token.ml

@@ -80,9 +80,6 @@ type token =
   | CLAIM
   | PROVE
 
-  (* Opacity keywords *)
-  | ABS
-
   (* Layer keywords *)
   | STATE
   | GC
@@ -243,9 +240,6 @@ let rec string_of_tok t =
     | CLAIM      -> "claim"
     | PROVE      -> "prove"
 
-    (* Opacity keywords *)
-    | ABS        -> "abs"
-
     (* Layer keywords *)
     | STATE      -> "state"
     | GC         -> "gc"

src/comp/front/ast.rs

@@ -119,11 +119,6 @@ tag mutability {
     maybe_mut;
 }
 
-tag opacity {
-    op_abstract;
-    op_transparent;
-}
-
 tag layer {
     layer_value;
     layer_state;

src/comp/front/lexer.rs

@@ -130,8 +130,6 @@ fn keyword_table() -> std.map.hashmap[str, token.token] {
     keywords.insert("claim", token.CLAIM);
     keywords.insert("prove", token.PROVE);
 
-    keywords.insert("abs", token.ABS);
-
     keywords.insert("state", token.STATE);
     keywords.insert("gc", token.GC);
 

src/comp/front/parser.rs

@@ -1951,7 +1951,6 @@ fn parse_item_native_fn(parser p) -> @ast.native_item {
 }
 
 fn parse_native_item(parser p) -> @ast.native_item {
-    let ast.opacity opa = parse_opacity(p);
     let ast.layer lyr = parse_layer(p);
     alt (p.peek()) {
         case (token.TYPE) {
@@ -2106,18 +2105,6 @@ fn parse_item_tag(parser p) -> @ast.item {
     ret @spanned(lo, hi, item);
 }
 
-fn parse_opacity(parser p) -> ast.opacity {
-    alt (p.peek()) {
-        case (token.ABS) {
-            p.bump();
-            ret ast.op_abstract;
-        }
-        case (_) {
-            ret ast.op_transparent;
-        }
-    }
-    fail;
-}
 
 fn parse_layer(parser p) -> ast.layer {
     alt (p.peek()) {
@@ -2167,7 +2154,6 @@ fn peeking_at_item(parser p) -> bool {
 }
 
 fn parse_item(parser p) -> @ast.item {
-    let ast.opacity opa = parse_opacity(p);
     let ast.layer lyr = parse_layer(p);
 
     alt (p.peek()) {

src/comp/front/token.rs

@@ -93,9 +93,6 @@ tag token {
     CLAIM;
     PROVE;
 
-    /* Opacity keywords */
-    ABS;
-
     /* Layer keywords */
     STATE;
     GC;
@@ -265,9 +262,6 @@ fn to_str(token t) -> str {
         case (CLAIM) { ret "claim"; }
         case (PROVE) { ret "prove"; }
 
-        /* Opacity keywords */
-        case (ABS) { ret "abs"; }
-
         /* Layer keywords */
         case (STATE) { ret "state"; }
         case (GC) { ret "gc"; }

src/lib/map.rs

@@ -6,7 +6,7 @@
 type hashfn[K] = fn(&K) -> uint;
 type eqfn[K] = fn(&K, &K) -> bool;
 
-abs state type hashmap[K, V] = state obj {
+state type hashmap[K, V] = state obj {
                                  fn size() -> uint;
                                  fn insert(&K key, &V val) -> bool;
                                  fn contains_key(&K key) -> bool;
@@ -241,5 +241,5 @@ fn mk_hashmap[K, V](&hashfn[K] hasher, &eqfn[K] eqer) -> hashmap[K, V] {
 // indent-tabs-mode: nil
 // c-basic-offset: 4
 // buffer-file-coding-system: utf-8-unix
-// compile-command: "make -k -C .. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
+// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
 // End: