author | wenzelm |
Thu, 13 Jul 2000 23:20:14 +0200 | |
changeset 9327 | 07598d493d33 |
parent 9137 | bec42c975d13 |
child 9332 | ff3a86a00ea5 |
permissions | -rw-r--r-- |
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(* Title: Pure/Thy/thy_info.ML |
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ID: $Id$ |
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Author: Markus Wenzel, TU Muenchen |
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License: GPL (GNU GENERAL PUBLIC LICENSE) |
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Theory loader database, including theory and file dependencies. |
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*) |
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signature BASIC_THY_INFO = |
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sig |
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val theory: string -> theory |
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val theory_of_sign: Sign.sg -> theory |
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val theory_of_thm: thm -> theory |
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(*val use: string -> unit*) (*exported later*) |
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val time_use: string -> unit |
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val touch_thy: string -> unit |
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val use_thy: string -> unit |
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val update_thy: string -> unit |
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val remove_thy: string -> unit |
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val time_use_thy: string -> unit |
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val use_thy_only: string -> unit |
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val update_thy_only: string -> unit |
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end; |
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signature THY_INFO = |
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sig |
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include BASIC_THY_INFO |
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datatype action = Update | Outdate | Remove |
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val str_of_action: action -> string |
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val add_hook: (action -> string -> unit) -> unit |
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val names: unit -> string list |
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val known_thy: string -> bool |
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val check_known_thy: string -> bool |
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val if_known_thy: (string -> unit) -> string -> unit |
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val lookup_theory: string -> theory option |
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val get_theory: string -> theory |
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val get_preds: string -> string list |
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val loaded_files: string -> Path.T list |
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val touch_child_thys: string -> unit |
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val touch_all_thys: unit -> unit |
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val load_file: bool -> Path.T -> unit |
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val use: string -> unit |
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val quiet_update_thy: bool -> string -> unit |
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val begin_theory: (string -> string list -> (Path.T * bool) list -> theory -> theory) -> |
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bool -> string -> string list -> (Path.T * bool) list -> theory |
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val end_theory: theory -> theory |
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val finish: unit -> unit |
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val register_theory: theory -> unit |
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end; |
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structure ThyInfo: THY_INFO = |
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struct |
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(** theory loader actions and hooks **) |
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datatype action = Update | Outdate | Remove; |
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val str_of_action = fn Update => "Update" | Outdate => "Outdate" | Remove => "Remove"; |
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local |
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val hooks = ref ([]: (action -> string -> unit) list); |
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in |
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fun add_hook f = hooks := f :: ! hooks; |
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fun perform action name = seq (fn f => (try (fn () => f action name) (); ())) (! hooks); |
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end; |
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(** thy database **) |
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(* messages *) |
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fun gen_msg txt [] = txt |
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| gen_msg txt names = txt ^ " " ^ commas_quote names; |
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fun loader_msg txt names = gen_msg ("Theory loader: " ^ txt) names; |
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val show_path = space_implode " via " o map quote; |
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fun cycle_msg name names = loader_msg ("cyclic dependency of " ^ show_path (name :: names)) []; |
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(* derived graph operations *) |
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fun add_deps name parents G = Graph.add_deps_acyclic (name, parents) G |
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handle Graph.CYCLES namess => error (cat_lines (map (cycle_msg name) namess)); |
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fun upd_deps name entry G = |
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foldl (fn (H, parent) => Graph.del_edge (parent, name) H) (G, Graph.imm_preds G name) |
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|> Graph.map_node name (K entry); |
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fun update_node name parents entry G = |
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(if can (Graph.get_node G) name then upd_deps name entry G else Graph.new_node (name, entry) G) |
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|> add_deps name parents; |
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(* thy database *) |
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type deps = |
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{present: bool, outdated: bool, |
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master: ThyLoad.master option, files: (Path.T * (Path.T * File.info) option) list}; |
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fun make_deps present outdated master files = |
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{present = present, outdated = outdated, master = master, files = files}: deps; |
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fun init_deps master files = Some (make_deps false true master (map (rpair None) files)); |
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type thy = deps option * theory option; |
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local |
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val database = ref (Graph.empty: thy Graph.T); |
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in |
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fun get_thys () = ! database; |
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val change_thys = Library.change database; |
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end; |
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(* access thy graph *) |
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fun thy_graph f x = f (get_thys ()) x; |
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fun get_names () = Graph.keys (get_thys ()); |
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(* access thy *) |
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fun lookup_thy name = |
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Some (thy_graph Graph.get_node name) handle Graph.UNDEF _ => None; |
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val known_thy = is_some o lookup_thy; |
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fun check_known_thy name = known_thy name orelse (warning ("Unknown theory " ^ quote name); false); |
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fun if_known_thy f name = if check_known_thy name then f name else (); |
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fun get_thy name = |
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(case lookup_thy name of |
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Some thy => thy |
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| None => error (loader_msg "nothing known about theory" [name])); |
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fun change_thy name f = (get_thy name; change_thys (Graph.map_node name f)); |
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(* access deps *) |
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val lookup_deps = apsome #1 o lookup_thy; |
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val get_deps = #1 o get_thy; |
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fun change_deps name f = change_thy name (fn (deps, x) => (f deps, x)); |
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fun is_finished name = is_none (get_deps name); |
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fun get_files name = (case get_deps name of Some {files, ...} => files | _ => []); |
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fun loaded_files name = |
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(case get_deps name of |
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None => [] |
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| Some {master, files, ...} => |
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(case master of Some m => [#1 (ThyLoad.get_thy m)] | None => []) @ |
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(mapfilter (apsome #1 o #2) files)); |
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fun get_preds name = |
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(thy_graph Graph.imm_preds name) handle Graph.UNDEF _ => |
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error (loader_msg "nothing known about theory" [name]); |
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(* access theory *) |
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fun lookup_theory name = |
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(case lookup_thy name of |
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Some (_, Some thy) => Some thy |
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| _ => None); |
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fun get_theory name = |
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(case lookup_theory name of |
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(Some theory) => theory |
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| _ => error (loader_msg "undefined theory entry for" [name])); |
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val theory_of_sign = get_theory o Sign.name_of; |
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val theory_of_thm = theory_of_sign o Thm.sign_of_thm; |
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fun put_theory name theory = change_thy name (fn (deps, _) => (deps, Some theory)); |
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(** thy operations **) |
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(* maintain 'outdated' flag *) |
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local |
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fun is_outdated name = |
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(case lookup_deps name of |
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Some (Some {outdated, ...}) => outdated |
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| _ => false); |
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fun outdate_thy name = |
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if is_finished name orelse is_outdated name then () |
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else (change_deps name (apsome (fn {present, outdated = _, master, files} => |
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make_deps present true master files)); perform Outdate name); |
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fun check_unfinished name = |
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if is_finished name then (warning (loader_msg "tried to touch finished theory" [name]); None) |
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else Some name; |
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in |
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fun touch_thys names = |
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seq outdate_thy (thy_graph Graph.all_succs (mapfilter check_unfinished names)); |
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fun touch_thy name = touch_thys [name]; |
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fun touch_child_thys name = touch_thys (thy_graph Graph.imm_succs name); |
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fun touch_all_thys () = seq outdate_thy (get_names ()); |
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end; |
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(* check 'finished' state *) |
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fun check_unfinished fail name = |
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if known_thy name andalso is_finished name then |
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fail (loader_msg "cannot update finished theory" [name]) |
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else (); |
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(* load_file *) |
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|
224 |
|
7191 | 225 |
local |
226 |
||
7941 | 227 |
fun provide path name info (deps as Some {present, outdated, master, files}) = |
228 |
(if exists (equal path o #1) files then () |
|
229 |
else warning (loader_msg "undeclared dependency of theory" [name] ^ |
|
230 |
" on file: " ^ quote (Path.pack path)); |
|
231 |
Some (make_deps present outdated master (overwrite (files, (path, Some info))))) |
|
232 |
| provide _ _ _ None = None; |
|
233 |
||
234 |
fun run_file path = |
|
235 |
(case apsome PureThy.get_name (Context.get_context ()) of |
|
236 |
None => (ThyLoad.load_file path; ()) |
|
237 |
| Some name => |
|
238 |
if known_thy name then change_deps name (provide path name (ThyLoad.load_file path)) |
|
239 |
else (ThyLoad.load_file path; ())); |
|
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|
240 |
|
7191 | 241 |
in |
242 |
||
7941 | 243 |
fun load_file time path = |
244 |
if time then |
|
7244 | 245 |
let val name = Path.pack path in |
246 |
timeit (fn () => |
|
247 |
(writeln ("\n**** Starting file " ^ quote name ^ " ****"); |
|
9036 | 248 |
run_file path; |
7244 | 249 |
writeln ("**** Finished file " ^ quote name ^ " ****\n"))) |
250 |
end |
|
7941 | 251 |
else run_file path; |
252 |
||
253 |
val use = load_file false o Path.unpack; |
|
254 |
val time_use = load_file true o Path.unpack; |
|
7191 | 255 |
|
256 |
end; |
|
6233 | 257 |
|
258 |
||
7099 | 259 |
(* load_thy *) |
260 |
||
261 |
fun required_by [] = "" |
|
262 |
| required_by initiators = " (required by " ^ show_path (rev initiators) ^ ")"; |
|
263 |
||
264 |
fun load_thy ml time initiators dir name parents = |
|
265 |
let |
|
266 |
val _ = writeln ("Loading theory " ^ quote name ^ required_by initiators); |
|
267 |
||
268 |
val _ = touch_thy name; |
|
269 |
val master = ThyLoad.load_thy dir name ml time; |
|
270 |
||
271 |
val files = get_files name; |
|
272 |
val missing_files = mapfilter (fn (path, None) => Some (Path.pack path) | _ => None) files; |
|
273 |
in |
|
274 |
if null missing_files then () |
|
275 |
else warning (loader_msg "unresolved dependencies of theory" [name] ^ |
|
7223 | 276 |
" on file(s): " ^ commas_quote missing_files); |
7191 | 277 |
change_deps name (fn _ => Some (make_deps true false (Some master) files)); |
7099 | 278 |
perform Update name |
279 |
end; |
|
280 |
||
281 |
||
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282 |
(* require_thy *) |
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283 |
|
7211 | 284 |
local |
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285 |
|
7941 | 286 |
fun load_deps ml dir name = |
287 |
let val (master, (parents, files)) = ThyLoad.deps_thy dir name ml |
|
7191 | 288 |
in (Some (init_deps (Some master) files), parents) end; |
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|
289 |
|
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290 |
fun file_current (_, None) = false |
7941 | 291 |
| file_current (path, info) = (info = ThyLoad.check_file path); |
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292 |
|
7941 | 293 |
fun current_deps ml strict dir name = |
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294 |
(case lookup_deps name of |
7941 | 295 |
None => (false, load_deps ml dir name) |
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|
296 |
| Some deps => |
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|
297 |
let val same_deps = (None, thy_graph Graph.imm_preds name) in |
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|
298 |
(case deps of |
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|
299 |
None => (true, same_deps) |
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|
300 |
| Some {present, outdated, master, files} => |
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|
301 |
if present andalso not strict then (true, same_deps) |
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302 |
else |
7941 | 303 |
let val master' = Some (ThyLoad.check_thy dir name ml) in |
304 |
if master <> master' then (false, load_deps ml dir name) |
|
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305 |
else (not outdated andalso forall file_current files, same_deps) |
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|
306 |
end) |
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|
307 |
end); |
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|
308 |
|
9036 | 309 |
fun require_thy ml time strict keep_strict initiators prfx (visited, str) = |
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310 |
let |
7066 | 311 |
val path = Path.expand (Path.unpack str); |
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|
312 |
val name = Path.pack (Path.base path); |
7066 | 313 |
in |
7589 | 314 |
if name mem_string initiators then error (cycle_msg name initiators) else (); |
7952 | 315 |
if known_thy name andalso is_finished name orelse name mem_string visited then |
316 |
(visited, (true, name)) |
|
7066 | 317 |
else |
318 |
let |
|
319 |
val dir = Path.append prfx (Path.dir path); |
|
320 |
val req_parent = |
|
7211 | 321 |
require_thy true time (strict andalso keep_strict) keep_strict (name :: initiators) dir; |
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changeset
|
322 |
|
7941 | 323 |
val (current, (new_deps, parents)) = current_deps ml strict dir name handle ERROR => |
7099 | 324 |
error (loader_msg "the error(s) above occurred while examining theory" [name] ^ |
7066 | 325 |
(if null initiators then "" else "\n" ^ required_by initiators)); |
326 |
val (visited', parent_results) = foldl_map req_parent (name :: visited, parents); |
|
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|
327 |
|
7066 | 328 |
val result = |
329 |
if current andalso forall #1 parent_results then true |
|
330 |
else |
|
331 |
((case new_deps of |
|
7099 | 332 |
Some deps => change_thys (update_node name parents (deps, None)) |
7066 | 333 |
| None => ()); |
9036 | 334 |
load_thy ml (time orelse ! Library.timing) initiators dir name parents; |
7099 | 335 |
false); |
7066 | 336 |
in (visited', (result, name)) end |
337 |
end; |
|
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changeset
|
338 |
|
7066 | 339 |
fun gen_use_thy req s = |
340 |
let val (_, (_, name)) = req [] Path.current ([], s) |
|
341 |
in Context.context (get_theory name) end; |
|
6241 | 342 |
|
7244 | 343 |
fun warn_finished f name = (check_unfinished warning name; f name); |
344 |
||
7211 | 345 |
in |
346 |
||
7952 | 347 |
val weak_use_thy = gen_use_thy (require_thy true false false false); |
348 |
fun quiet_update_thy ml = gen_use_thy (require_thy ml false true true); |
|
7244 | 349 |
|
350 |
val use_thy = warn_finished (gen_use_thy (require_thy true false true false)); |
|
351 |
val time_use_thy = warn_finished (gen_use_thy (require_thy true true true false)); |
|
352 |
val use_thy_only = warn_finished (gen_use_thy (require_thy false false true false)); |
|
353 |
val update_thy = warn_finished (gen_use_thy (require_thy true false true true)); |
|
354 |
val update_thy_only = warn_finished (gen_use_thy (require_thy false false true true)); |
|
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|
355 |
|
7211 | 356 |
end; |
357 |
||
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|
358 |
|
6666 | 359 |
(* remove_thy *) |
360 |
||
361 |
fun remove_thy name = |
|
7910 | 362 |
if is_finished name then error (loader_msg "cannot remove finished theory" [name]) |
6666 | 363 |
else |
364 |
let val succs = thy_graph Graph.all_succs [name] in |
|
365 |
writeln (loader_msg "removing" succs); |
|
7191 | 366 |
seq (perform Remove) succs; |
367 |
change_thys (Graph.del_nodes succs) |
|
6666 | 368 |
end; |
369 |
||
370 |
||
7066 | 371 |
(* begin / end theory *) |
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|
372 |
|
8805 | 373 |
fun begin_theory present upd name parents paths = |
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|
374 |
let |
8805 | 375 |
val assert_thy = if upd then quiet_update_thy true else weak_use_thy; |
7244 | 376 |
val _ = check_unfinished error name; |
7941 | 377 |
val _ = (map Path.basic parents; seq assert_thy parents); |
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|
378 |
val theory = PureThy.begin_theory name (map get_theory parents); |
7952 | 379 |
val deps = |
380 |
if known_thy name then get_deps name |
|
381 |
else (init_deps None (map #1 paths)); (*records additional ML files only!*) |
|
382 |
val _ = change_thys (update_node name parents (deps, Some theory)); |
|
6329 | 383 |
val use_paths = mapfilter (fn (x, true) => Some x | _ => None) paths; |
8805 | 384 |
val theory' = theory |> present name parents paths; |
385 |
val ((), theory'') = Context.pass_theory theory' (seq (load_file false)) use_paths; |
|
386 |
in theory'' end; |
|
7244 | 387 |
|
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|
388 |
fun end_theory theory = |
7099 | 389 |
let |
390 |
val theory' = PureThy.end_theory theory; |
|
391 |
val name = PureThy.get_name theory; |
|
392 |
in put_theory name theory'; theory' end; |
|
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|
393 |
|
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|
394 |
|
6666 | 395 |
(* finish all theories *) |
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|
396 |
|
6666 | 397 |
fun finish () = change_thys (Graph.map_nodes (fn (_, entry) => (None, entry))); |
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changeset
|
398 |
|
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changeset
|
399 |
|
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changeset
|
400 |
(* register existing theories *) |
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|
401 |
|
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|
402 |
fun register_theory theory = |
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changeset
|
403 |
let |
43d0efafa025
Theory loader database: theory and file dependencies, theory values
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|
404 |
val name = PureThy.get_name theory; |
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|
405 |
val parents = Theory.parents_of theory; |
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|
406 |
val parent_names = map PureThy.get_name parents; |
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|
407 |
|
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|
408 |
fun err txt bads = |
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|
409 |
error (loader_msg txt bads ^ "\n" ^ gen_msg "cannot register theory" [name]); |
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changeset
|
410 |
|
6666 | 411 |
val nonfinished = filter_out is_finished parent_names; |
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|
412 |
fun get_variant (x, y_name) = |
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|
413 |
if Theory.eq_thy (x, get_theory y_name) then None |
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|
414 |
else Some y_name; |
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changeset
|
415 |
val variants = mapfilter get_variant (parents ~~ parent_names); |
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changeset
|
416 |
|
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|
417 |
fun register G = |
6362 | 418 |
(Graph.new_node (name, (None, Some theory)) G |
9327 | 419 |
handle Graph.DUP _ => err "duplicate theory entry" []) |
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|
420 |
|> add_deps name parent_names; |
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|
421 |
in |
6666 | 422 |
if not (null nonfinished) then err "non-finished parent theories" nonfinished |
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|
423 |
else if not (null variants) then err "different versions of parent theories" variants |
7099 | 424 |
else (change_thys register; perform Update name) |
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|
425 |
end; |
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|
426 |
|
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changeset
|
427 |
|
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|
428 |
(*final declarations of this structure*) |
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|
429 |
val theory = get_theory; |
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|
430 |
val names = get_names; |
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|
431 |
|
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|
432 |
end; |
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|
433 |
|
5209 | 434 |
structure BasicThyInfo: BASIC_THY_INFO = ThyInfo; |
435 |
open BasicThyInfo; |