# HG changeset patch
# User wenzelm
# Date 769356996 -7200
# Node ID a8d204d8071d392250bba4a738554466d383c7c9
# Parent  fcea89074e4c1cbc8e6828f4c3305e8ae558a710
support for new style mixfix annotations;
part of the pure syntax as mixfix (supports axclasses);

diff -r fcea89074e4c -r a8d204d8071d src/Pure/Syntax/mixfix.ML
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/Syntax/mixfix.ML	Thu May 19 16:16:36 1994 +0200
@@ -0,0 +1,174 @@
+(*  Title:      Pure/Syntax/mixfix.ML
+    ID:         $Id$
+    Author:     Markus Wenzel, TU Muenchen
+
+Mixfix declarations, infixes, binders. Part of the Pure syntax.
+
+TODO:
+  note: needs mk_binder_tr/tr'
+  Mixfix.mixfix -> mixfix
+  remove ....Mixfix
+*)
+
+signature MIXFIX0 =
+sig
+  datatype mixfix =
+    NoSyn |
+    Mixfix of string * int list * int |
+    Delimfix of string |
+    Infixl of int |
+    Infixr of int |
+    Binder of string * int
+  val max_pri: int
+end;
+
+signature MIXFIX1 =
+sig
+  include MIXFIX0
+  val type_name: string -> mixfix -> string
+  val const_name: string -> mixfix -> string
+  val pure_types: (string * int * mixfix) list
+  val pure_syntax: (string * string * mixfix) list
+end;
+
+signature MIXFIX =
+sig
+  include MIXFIX1
+  structure SynExt: SYN_EXT
+  local open SynExt in
+    val syn_ext_types: string list -> (string * int * mixfix) list -> syn_ext
+    val syn_ext_consts: string list -> (string * typ * mixfix) list -> syn_ext
+  end
+end;
+
+functor MixfixFun(structure Lexicon: LEXICON and SynExt: SYN_EXT
+  and SExtension: SEXTENSION): MIXFIX =
+struct
+
+structure SynExt = SynExt;
+open Lexicon SynExt SynExt.Ast SExtension;
+
+
+(** mixfix declarations **)
+
+datatype mixfix =
+  NoSyn |
+  Mixfix of string * int list * int |
+  Delimfix of string |
+  Infixl of int |
+  Infixr of int |
+  Binder of string * int;
+
+
+(* type / const names *)
+
+fun strip ("'" :: c :: cs) = c :: strip cs
+  | strip ["'"] = []
+  | strip (c :: cs) = c :: strip cs
+  | strip [] = [];
+
+val strip_esc = implode o strip o explode;
+
+
+fun type_name t (Infixl _) = strip_esc t
+  | type_name t (Infixr _) = strip_esc t
+  | type_name t _ = t;
+
+fun infix_name c = "op " ^ strip_esc c;
+
+fun const_name c (Infixl _) = infix_name c
+  | const_name c (Infixr _) = infix_name c
+  | const_name c _ = c;
+
+
+(* syn_ext_types *)
+
+fun syn_ext_types all_roots type_decls =
+  let
+    fun name_of (t, _, mx) = type_name t mx;
+
+    fun mk_infix t p1 p2 p3 =
+      Mfix ("(_ " ^ t ^ "/ _)", [typeT, typeT] ---> typeT,
+        strip_esc t, [p1, p2], p3);
+
+    fun mfix_of (_, _, NoSyn) = None
+      | mfix_of (t, 2, Infixl p) = Some (mk_infix t p (p + 1) p)
+      | mfix_of (t, 2, Infixr p) = Some (mk_infix t (p + 1) p p)
+      | mfix_of decl = error ("Bad mixfix declaration for type " ^
+          quote (name_of decl));
+
+    val mfix = mapfilter mfix_of type_decls;
+    val xconsts = map name_of type_decls;
+  in
+    syn_ext all_roots [] mfix xconsts ([], [], [], []) ([], [])
+  end;
+
+
+(* syn_ext_consts *)
+
+fun syn_ext_consts all_roots const_decls =
+  let
+    fun name_of (c, _, mx) = const_name c mx;
+
+    fun mk_infix sy ty c p1 p2 p3 =
+      [Mfix ("(_ " ^ sy ^ "/ _)", ty, c, [p1, p2], p3),
+       Mfix ("op " ^ sy, ty, c, [], max_pri)];
+
+    fun binder_typ _ (Type ("fun", [Type ("fun", [_, ty2]), ty3])) =
+          [Type ("idts", []), ty2] ---> ty3
+      | binder_typ c _ = error ("Bad type of binder " ^ quote c);
+
+    fun mfix_of (_, _, NoSyn) = []
+      | mfix_of (c, ty, Mixfix (sy, ps, p)) = [Mfix (sy, ty, c, ps, p)]
+      | mfix_of (c, ty, Delimfix sy) = [Mfix (sy, ty, c, [], max_pri)]
+      | mfix_of (sy, ty, Infixl p) = mk_infix sy ty (infix_name sy) p (p + 1) p
+      | mfix_of (sy, ty, Infixr p) = mk_infix sy ty (infix_name sy) (p + 1) p p
+      | mfix_of (c, ty, Binder (sy, p)) =
+          [Mfix ("(3" ^ sy ^ "_./ _)", binder_typ c ty, sy, [], p)];
+
+    fun binder (c, _, Binder (sy, _)) = Some (sy, c)
+      | binder _ = None;
+
+    val mfix = flat (map mfix_of const_decls);
+    val xconsts = map name_of const_decls;
+    val binders = mapfilter binder const_decls;
+    val binder_trs = map mk_binder_tr binders;
+    val binder_trs' = map (mk_binder_tr' o swap) binders;
+  in
+    syn_ext all_roots [] mfix xconsts ([], binder_trs, binder_trs', []) ([], [])
+  end;
+
+
+
+(** Pure syntax **)
+
+val pure_types =
+  map (fn t => (t, 0, NoSyn))
+    (terminals @ [logic, "type", "types", "sort", "classes", args, "idt",
+      "idts", "aprop", "asms"]);
+
+val pure_syntax =
+ [("_lambda",   "[idts, 'a] => ('b => 'a)",       Mixfix ("(3%_./ _)", [], 0)),
+  ("",          "'a => " ^ args,                  Delimfix "_"),
+  ("_args",     "['a, " ^ args ^ "] => " ^ args,  Delimfix "_,/ _"),
+  ("",          "id => idt",                      Delimfix "_"),
+  ("_idtyp",    "[id, type] => idt",              Mixfix ("_::_", [], 0)),
+  ("",          "idt => idt",                     Delimfix "'(_')"),
+  ("",          "idt => idts",                    Delimfix "_"),
+  ("_idts",     "[idt, idts] => idts",            Mixfix ("_/ _", [1, 0], 0)),
+  ("",          "id => aprop",                    Delimfix "_"),
+  ("",          "var => aprop",                   Delimfix "_"),
+  (applC,       "[('b => 'a), " ^ args ^ "] => aprop",
+    Mixfix ("(1_/(1'(_')))", [max_pri, 0], max_pri)),
+  ("_aprop",    "aprop => prop",                  Delimfix "PROP _"),
+  ("",          "prop => asms",                   Delimfix "_"),
+  ("_asms",     "[prop, asms] => asms",           Delimfix "_;/ _"),
+  ("_bigimpl",  "[asms, prop] => prop",           Mixfix ("((3[| _ |]) ==>/ _)", [0, 1], 1)),
+  ("_insort",   "[type, 'a] => prop",             Delimfix "(2'(| _ :/ _ |'))"),
+  ("_K",        "'a",                             NoSyn),
+  ("_explode",  "'a",                             NoSyn),
+  ("_implode",  "'a",                             NoSyn)];
+
+
+end;
+