--- a/src/Pure/Isar/locale.ML Wed Nov 21 00:36:51 2001 +0100
+++ b/src/Pure/Isar/locale.ML Wed Nov 21 20:20:18 2001 +0100
@@ -5,7 +5,7 @@
Locales -- Isar proof contexts as meta-level predicates, with local
syntax and implicit structures. Draws basic ideas from Florian
-Kammueller's original version of locales, but uses the rich
+Kammüller's original version of locales, but uses the rich
infrastructure of Isar instead of the raw meta-logic.
*)
@@ -19,7 +19,10 @@
sig
include BASIC_LOCALE
type context
- type expression
+ datatype expression =
+ Locale of string |
+ Merge of expression list |
+ Rename of expression * string option list
datatype ('typ, 'term, 'fact, 'att) elem =
Fixes of (string * 'typ option * mixfix option) list |
Assumes of ((string * 'att list) * ('term * ('term list * 'term list)) list) list |
@@ -52,7 +55,10 @@
type context = ProofContext.context;
-type expression = string;
+datatype expression =
+ Locale of string |
+ Merge of expression list |
+ Rename of expression * string option list;
datatype ('typ, 'term, 'fact, 'att) elem =
Fixes of (string * 'typ option * mixfix option) list |
@@ -65,12 +71,15 @@
type 'att element_i = (typ, term, thm list, 'att) elem;
type locale =
- {imports: expression list, elements: context attribute element_i list, closed: bool};
+ {imports: string list,
+ elements: context attribute element_i list,
+ params: (string * typ) list,
+ text: ((string * typ) list * term) option,
+ closed: bool};
-fun make_locale imports elements closed =
- {imports = imports, elements = elements, closed = closed}: locale;
-
-fun close_locale {imports, elements, closed = _} = make_locale imports elements true;
+fun make_locale imports elements params text closed =
+ {imports = imports, elements = elements, params = params,
+ text = text, closed = closed}: locale;
@@ -85,7 +94,11 @@
val empty = (NameSpace.empty, Symtab.empty);
val copy = I;
- fun finish (space, locales) = (space, Symtab.map close_locale locales);
+
+ fun close {imports, elements, params, text, closed = _} =
+ make_locale imports elements params text true;
+ fun finish (space, locales) = (space, Symtab.map close locales);
+
val prep_ext = I;
fun merge ((space1, locales1), (space2, locales2)) =
(NameSpace.merge (space1, space2), Symtab.merge (K true) (locales1, locales2));
@@ -121,7 +134,11 @@
(** internalize elements **)
-(* read_elem *)
+(* read *)
+
+fun read_expression ctxt (Locale xname) = Locale (intern (ProofContext.sign_of ctxt) xname)
+ | read_expression ctxt (Merge exprs) = Merge (map (read_expression ctxt) exprs)
+ | read_expression ctxt (Rename (expr, xs)) = Rename (read_expression ctxt expr, xs);
fun read_elem ctxt =
fn Fixes fixes =>
@@ -136,7 +153,7 @@
in Defines (map #1 defs ~~ map (fn [(t', (ps', []))] => (t', ps')) propps) end
| Notes facts =>
Notes (map (apsnd (map (apfst (ProofContext.get_thms ctxt)))) facts)
- | Uses xname => Uses (intern (ProofContext.sign_of ctxt) xname);
+ | Uses expr => Uses (read_expression ctxt expr);
(* prepare attributes *)
@@ -148,11 +165,50 @@
| attribute attrib (Defines defs) = Defines (map (apfst (int_att attrib)) defs)
| attribute attrib (Notes facts) =
Notes (map (apfst (int_att attrib) o apsnd (map (int_att attrib))) facts)
- | attribute _ (Uses name) = Uses name;
+ | attribute _ (Uses expr) = Uses expr;
end;
+(** renaming **)
+
+fun rename ren x = if_none (assoc_string (ren, x)) x;
+
+fun rename_term ren (Free (x, T)) = Free (rename ren x, T)
+ | rename_term ren (t $ u) = rename_term ren t $ rename_term ren u
+ | rename_term ren (Abs (x, T, t)) = Abs (x, T, rename_term ren t)
+ | rename_term _ a = a;
+
+fun rename_thm ren th =
+ let
+ val {sign, hyps, prop, maxidx, ...} = Thm.rep_thm th;
+ val cert = Thm.cterm_of sign;
+ val (xs, Ts) = Library.split_list (foldl Drule.add_frees ([], prop :: hyps));
+ val xs' = map (rename ren) xs;
+ fun cert_frees names = map (cert o Free) (names ~~ Ts);
+ fun cert_vars names = map (cert o Var o apfst (rpair (maxidx + 1))) (names ~~ Ts);
+ in
+ if xs = xs' then th
+ else
+ th
+ |> Drule.implies_intr_list (map cert hyps)
+ |> Drule.forall_intr_list (cert_frees xs)
+ |> Drule.forall_elim_list (cert_vars xs)
+ |> Thm.instantiate ([], cert_vars xs ~~ cert_frees xs')
+ |> (fn th' => Drule.implies_elim_list th' (map (Thm.assume o cert o rename_term ren) hyps))
+ end;
+
+
+fun rename_elem ren (Fixes fixes) = Fixes (map (fn (x, T, mx) =>
+ (rename ren x, T, if mx = None then mx else Some Syntax.NoSyn)) fixes)
+ | rename_elem ren (Assumes asms) = Assumes (map (apsnd (map (fn (t, (ps, qs)) =>
+ (rename_term ren t, (map (rename_term ren) ps, map (rename_term ren) qs))))) asms)
+ | rename_elem ren (Defines defs) = Defines (map (apsnd (fn (t, ps) =>
+ (rename_term ren t, map (rename_term ren) ps))) defs)
+ | rename_elem ren (Notes facts) = Notes (map (apsnd (map (apfst (map (rename_thm ren))))) facts)
+ | rename_elem ren (Uses expr) = sys_error "FIXME";
+
+
(** activate locales **)
@@ -167,28 +223,44 @@
let val (c, t') = ProofContext.cert_def ctxt t
in ((if name = "" then Thm.def_name c else name, atts), [(t', (ps, []))]) end) defs) ctxt)
| activate (ctxt, Notes facts) = #1 (ProofContext.have_thmss facts ctxt)
- | activate (ctxt, Uses name) = activate_locale_i name ctxt
+ | activate (ctxt, Uses expr) = activate_expression [] (ctxt, expr)
and activate_elements_i elems ctxt = foldl activate (ctxt, elems)
-and activate_locale_elements (ctxt, name) =
+and activate_expression rs (ctxt, Locale name) = activate_loc rs name ctxt
+ | activate_expression rs (ctxt, Merge exprs) = foldl (activate_expression rs) (ctxt, exprs)
+ | activate_expression rs (ctxt, Rename (expr, xs)) = activate_expression (xs :: rs) (ctxt, expr)
+
+and activate_locale_elements rs (ctxt, name) =
let
val thy = ProofContext.theory_of ctxt;
- val {elements, ...} = the_locale thy name; (*exception ERROR*)
+ val {elements, params, ...} = the_locale thy name; (*exception ERROR*)
+ val param_names = map #1 params;
+
+ fun replace (opt_x :: xs, y :: ys) = if_none opt_x y :: replace (xs, ys)
+ | replace ([], ys) = ys
+ | replace (_ :: _, []) = raise ProofContext.CONTEXT
+ ("Too many parameters in renaming of locale " ^ quote name, ctxt);
+
+ val elements' =
+ if null rs then elements
+ else map (rename_elem (param_names ~~ foldr replace (rs, param_names))) elements;
in
- activate_elements_i elements ctxt handle ProofContext.CONTEXT (msg, c) =>
+ activate_elements_i elements' ctxt handle ProofContext.CONTEXT (msg, c) =>
raise ProofContext.CONTEXT (msg ^ "\nThe error(s) above occurred in locale " ^
quote (cond_extern (Theory.sign_of thy) name), c)
end
-and activate_locale_i name ctxt =
- activate_locale_elements (foldl activate_locale_elements
+and activate_loc rs name ctxt =
+ activate_locale_elements rs (foldl (activate_locale_elements rs)
(ctxt, #imports (the_locale (ProofContext.theory_of ctxt) name)), name);
fun activate_elements elems ctxt =
foldl ((fn (ctxt, elem) => activate (ctxt, read_elem ctxt elem))) (ctxt, elems);
+val activate_locale_i = activate_loc [];
+
fun activate_locale xname ctxt =
activate_locale_i (intern (ProofContext.sign_of ctxt) xname) ctxt;
@@ -200,7 +272,7 @@
let
val sg = Theory.sign_of thy;
val name = intern sg xname;
- val {imports, elements, closed = _} = the_locale thy name;
+ val {imports, elements, params = _, text = _, closed = _} = the_locale thy name;
val locale_ctxt = ProofContext.init thy |> activate_locale_i name;
val prt_typ = Pretty.quote o ProofContext.pretty_typ locale_ctxt;
@@ -227,11 +299,18 @@
| prt_fact ((a, _), ths) = Pretty.block
(Pretty.breaks (Pretty.str (a ^ ":") :: map prt_thm (flat (map fst ths))));
+ fun prt_expr (Locale name) = Pretty.str (cond_extern sg name)
+ | prt_expr (Merge exprs) = Pretty.enclose "(" ")"
+ (flat (separate [Pretty.str " +", Pretty.brk 1]
+ (map (single o prt_expr) exprs)))
+ | prt_expr (Rename (expr, xs)) = Pretty.enclose "(" ")"
+ (Pretty.breaks (prt_expr expr :: map (fn x => Pretty.str (if_none x "_")) xs));
+
fun prt_elem (Fixes fixes) = Pretty.big_list "fixes" (map prt_fix fixes)
| prt_elem (Assumes asms) = Pretty.big_list "assumes" (map prt_asm asms)
| prt_elem (Defines defs) = Pretty.big_list "defines" (map prt_def defs)
| prt_elem (Notes facts) = Pretty.big_list "notes" (map prt_fact facts)
- | prt_elem (Uses name) = Pretty.str ("uses " ^ cond_extern sg name);
+ | prt_elem (Uses expr) = Pretty.block [Pretty.str "uses", Pretty.brk 1, prt_expr expr];
val prt_header = Pretty.block (Pretty.str ("locale " ^ cond_extern sg name ^ " =") ::
(if null imports then [] else
@@ -273,15 +352,17 @@
error ("Duplicate definition of locale " ^ quote name);
val imports = map (prep_locale sign) raw_imports;
- val imports_ctxt = foldl activate_locale_elements (ProofContext.init thy, imports);
+ val imports_ctxt = foldl (activate_locale_elements []) (ProofContext.init thy, imports);
fun prep (ctxt, raw_elem) =
let val elem = closeup ctxt (prep_elem ctxt raw_elem)
in (activate (ctxt, elem), elem) end;
val (locale_ctxt, elems) = foldl_map prep (imports_ctxt, raw_elems);
+ val params = []; (* FIXME *)
+ val text = None; (* FIXME *)
in
thy
|> declare_locale name
- |> put_locale name (make_locale imports elems false)
+ |> put_locale name (make_locale imports elems params text false)
end;
val add_locale = gen_add_locale intern read_elem;
@@ -293,14 +374,14 @@
fun add_thmss name args thy =
let
- val {imports, elements, closed} = the_locale thy name;
+ val {imports, elements, params, text, closed} = the_locale thy name;
val _ = conditional closed (fn () =>
error ("Cannot store results in closed locale: " ^ quote name));
val note = Notes (map (fn ((a, ths), atts) =>
((a, atts), [(map (curry Thm.name_thm a) ths, [])])) args);
in
activate (thy |> ProofContext.init |> activate_locale_i name, note); (*test attributes!*)
- thy |> put_locale name (make_locale imports (elements @ [note]) closed)
+ thy |> put_locale name (make_locale imports (elements @ [note]) params text closed)
end;