author | wenzelm |
Fri, 05 Feb 1999 21:01:53 +0100 | |
changeset 6241 | d3c6184ca6c5 |
parent 6233 | 9cc37487f995 |
child 6263 | f30d1e31b9df |
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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and user data. |
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TODO: |
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- data: ThyInfoFun; |
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- remove operation (GC!?); |
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- update_all operation (!?); |
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- put_theory: |
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. include data; |
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. allow for undef entry only; |
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. elim (via theory_ref); |
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- stronger handling of missing files (!?!?); |
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- register_theory: do not require final parents (!?) (no?); |
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- observe verbose flag; |
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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 time_use_thy: 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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val verbose: bool ref |
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val names: unit -> string list |
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val get_theory: string -> theory |
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val put_theory: theory -> unit |
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val loaded_files: string -> (Path.T * File.info) list |
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val load_file: bool -> Path.T -> unit |
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val use: string -> unit |
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val use_thy_only: string -> unit |
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val begin_theory: string -> string list -> theory |
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val end_theory: theory -> theory |
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val finalize_all: unit -> unit |
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val register_theory: theory -> unit |
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end; |
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signature PRIVATE_THY_INFO = |
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sig |
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include THY_INFO |
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(* FIXME |
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val init_data: Object.kind -> (Object.T * (Object.T -> Object.T) * |
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(Object.T * Object.T -> Object.T) * (Sign.sg -> Object.T -> unit)) -> unit |
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val print_data: Object.kind -> string -> unit |
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val get_data: Object.kind -> (Object.T -> 'a) -> string -> 'a |
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val put_data: Object.kind -> ('a -> Object.T) -> 'a -> unit |
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*) |
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end; |
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structure ThyInfo: PRIVATE_THY_INFO = |
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struct |
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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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(* verbose mode *) |
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val verbose = ref false; |
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fun if_verbose f x = if ! verbose then f x else (); |
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(* derived graph operations *) (* FIXME more abstract (!?) *) |
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fun add_deps name parents G = |
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foldl (fn (H, parent) => Graph.add_edge_acyclic (parent, name) H) (G, parents) |
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handle Graph.CYCLES namess => error (cat_lines (map (cycle_msg name) namess)); |
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fun del_deps name G = (* FIXME GC (!?!?) *) |
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foldl (fn (H, parent) => Graph.del_edge (parent, name) H) (G, Graph.imm_preds G name); |
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fun update_node name parents entry G = |
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add_deps name parents |
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(if can (Graph.get_node G) name then del_deps name G else Graph.new_node (name, entry) G); |
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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: (Path.T * File.info) list, 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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type thy = deps option * (theory * Object.T Symtab.table) option; |
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type kind = Object.kind * (Object.T * (Object.T -> unit)); |
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local |
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val database = ref (Graph.empty: thy Graph.T, Symtab.empty: kind Symtab.table); |
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in |
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fun get_thys () = #1 (! database); |
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fun get_kinds () = #2 (! database); |
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fun change_thys f = database := (f (get_thys ()), get_kinds ()); |
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fun change_kinds f = database := (get_thys (), f (get_kinds ())); |
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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 () = map #1 (Graph.get_nodes (get_thys ())); |
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(* access thy *) |
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fun lookup_thy name = Some (thy_graph Graph.get_node name) handle Graph.UNDEFINED _ => None; |
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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_final 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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val loaded_files = mapfilter #2 o get_files; |
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(* access theory *) |
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156 |
|
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157 |
fun get_theory name = |
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158 |
(case get_thy 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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161 |
|
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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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164 |
|
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165 |
fun put_theory theory = |
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change_thy (PureThy.get_name theory) (fn (deps, _) => (deps, (Some (theory, Symtab.empty)))); |
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167 |
|
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168 |
|
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169 |
(** thy data **) (* FIXME *) |
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170 |
|
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171 |
|
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172 |
|
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173 |
(** thy operations **) |
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174 |
|
6241 | 175 |
(* maintain 'outdated' flag *) |
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176 |
|
6241 | 177 |
fun is_outdated name = |
178 |
(case lookup_deps name of |
|
179 |
Some (Some {outdated, ...}) => outdated |
|
180 |
| _ => false); |
|
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181 |
|
6241 | 182 |
fun outdate_thy name = |
183 |
if is_final name then () |
|
184 |
else change_deps name (apsome (fn {present, outdated = _, master, files} => |
|
185 |
make_deps present true master files)); |
|
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186 |
|
6241 | 187 |
fun touch_thy name = |
188 |
if is_outdated name then () |
|
189 |
else if is_final name then warning (loader_msg "tried to touch final theory" [name]) |
|
190 |
else |
|
191 |
(case filter_out is_outdated (thy_graph Graph.all_succs [name]) \ name of |
|
192 |
[] => outdate_thy name |
|
193 |
| names => |
|
194 |
(warning (loader_msg "the following theories become out-of-date:" names); |
|
195 |
seq outdate_thy names; outdate_thy name)); |
|
196 |
||
197 |
val untouch_deps = apsome (fn {present, outdated = _, master, files}: deps => |
|
198 |
make_deps present false master files); |
|
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199 |
|
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200 |
|
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201 |
(* load_thy *) |
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202 |
|
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203 |
fun required_by [] = "" |
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| required_by initiators = " (required by " ^ show_path (rev initiators) ^ ")"; |
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205 |
|
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206 |
fun load_thy ml time initiators name parents = |
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207 |
let |
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val _ = if name mem_string initiators then error (cycle_msg name (rev initiators)) else (); |
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val _ = writeln ("Loading theory " ^ quote name ^ required_by initiators); |
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210 |
|
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211 |
val _ = seq touch_thy (thy_graph Graph.all_succs [name]); |
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val master = ThyLoad.load_thy name ml time; |
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213 |
|
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214 |
val files = get_files name; |
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215 |
val missing_files = mapfilter (fn (path, None) => Some (Path.pack path) | _ => None) files; |
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216 |
in |
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217 |
if null missing_files then () |
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218 |
else warning (loader_msg ("unresolved dependencies on file(s) " ^ commas_quote missing_files ^ |
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"\nfor theory") [name]); |
6241 | 220 |
change_deps name (fn _ => Some (make_deps true false master files)) |
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221 |
end; |
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222 |
|
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223 |
|
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224 |
(* load_file *) |
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225 |
|
6241 | 226 |
fun run_file path = |
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227 |
let |
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228 |
fun provide name info (deps as Some {present, outdated, master, files}) = |
6241 | 229 |
if present then deps |
230 |
else if exists (equal path o #1) files then |
|
231 |
Some (make_deps present outdated master (overwrite (files, (path, Some info)))) |
|
232 |
else (warning (loader_msg "undeclared dependency of theory" [name] ^ |
|
233 |
": " ^ quote (Path.pack path)); deps) |
|
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234 |
| provide _ _ None = None; |
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235 |
in |
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236 |
(case apsome PureThy.get_name (Context.get_context ()) of |
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None => (ThyLoad.load_file path; ()) |
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238 |
| Some name => |
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239 |
if is_some (lookup_thy name) then change_deps name (provide name (ThyLoad.load_file path)) |
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240 |
else (ThyLoad.load_file path; ())) |
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241 |
end; |
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242 |
|
6241 | 243 |
fun load_file false path = run_file path |
244 |
| load_file true path = |
|
245 |
let val name = Path.pack path in |
|
246 |
timeit (fn () => |
|
247 |
(writeln ("\n**** Starting file " ^ quote name ^ " ****"); |
|
248 |
run_file path; |
|
249 |
writeln ("**** Finished file " ^ quote name ^ " ****\n"))) |
|
250 |
end; |
|
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251 |
|
6241 | 252 |
val use = load_file false o Path.unpack; |
253 |
val time_use = load_file true o Path.unpack; |
|
6233 | 254 |
|
255 |
||
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256 |
(* require_thy *) |
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257 |
|
6241 | 258 |
fun init_deps master files = Some (make_deps false false master (map (rpair None) files)); |
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259 |
|
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260 |
fun load_deps name ml = |
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261 |
let val (master, (parents, files)) = ThyLoad.deps_thy name ml |
6233 | 262 |
in (Some (init_deps master files), parents) end; |
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263 |
|
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264 |
fun file_current (_, None) = false |
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265 |
| file_current (path, info) = info = ThyLoad.check_file path; |
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266 |
|
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267 |
fun current_deps ml strict name = |
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268 |
(case lookup_deps name of |
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269 |
None => (false, load_deps name ml) |
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270 |
| Some deps => |
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271 |
let val same_deps = (None, thy_graph Graph.imm_preds name) in |
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272 |
(case deps of |
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273 |
None => (true, same_deps) |
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274 |
| Some {present, outdated, master, files} => |
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275 |
if present andalso not strict then (true, same_deps) |
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276 |
else |
6233 | 277 |
let val master' = ThyLoad.check_thy name ml in |
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278 |
if master <> master' then (false, load_deps name ml) |
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279 |
else (not outdated andalso forall file_current files, same_deps) |
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280 |
end) |
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281 |
end); |
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282 |
|
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283 |
fun require_thy ml time strict keep_strict initiators name = |
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284 |
let |
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285 |
val require_parent = |
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286 |
require_thy ml time (strict andalso keep_strict) keep_strict (name :: initiators); |
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287 |
val (current, (new_deps, parents)) = current_deps ml strict name handle ERROR => |
6241 | 288 |
error (loader_msg "The error(s) above occurred while examining theory" [name] ^ |
289 |
(if null initiators then "" else "\n" ^ required_by initiators)); |
|
6233 | 290 |
val parents_current = map require_parent parents; |
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291 |
in |
6233 | 292 |
if current andalso forall I parents_current then true |
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293 |
else |
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294 |
((case new_deps of |
6241 | 295 |
Some deps => change_thys (update_node name parents (untouch_deps deps, None)) |
6233 | 296 |
| None => ()); |
297 |
load_thy ml time initiators name parents; |
|
298 |
false) |
|
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299 |
end; |
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300 |
|
6241 | 301 |
fun gen_use_thy f name = (f name; Context.context (get_theory name)); |
302 |
||
303 |
val weak_use_thy = gen_use_thy (require_thy true false false false []); |
|
304 |
val use_thy = gen_use_thy (require_thy true false true false []); |
|
305 |
val update_thy = gen_use_thy (require_thy true false true true []); |
|
306 |
val time_use_thy = gen_use_thy (require_thy true true true false []); |
|
307 |
val use_thy_only = gen_use_thy (require_thy false false true false []); |
|
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308 |
|
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309 |
|
6241 | 310 |
(* begin / end theory *) (* FIXME tune *) |
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311 |
|
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312 |
fun begin_theory name parents = |
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313 |
let |
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314 |
val _ = seq weak_use_thy parents; |
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315 |
val theory = PureThy.begin_theory name (map get_theory parents); |
6233 | 316 |
val _ = change_thys (update_node name parents (init_deps [] [], Some (theory, Symtab.empty))); |
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317 |
in theory end; |
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318 |
|
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319 |
fun end_theory theory = |
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320 |
let val theory' = PureThy.end_theory theory |
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|
321 |
in put_theory theory'; theory' end; |
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322 |
|
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323 |
|
6241 | 324 |
(* finalize entries *) |
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325 |
|
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326 |
(* FIXME |
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327 |
fun finishs names = |
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328 |
let |
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329 |
fun err txt bads = |
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330 |
error (loader_msg txt bads ^ "\n" ^ gen_msg "cannot mark" names ^ " as finished"); |
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|
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val all_preds = thy_graph Graph.all_preds names; |
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val noncurrent = filter_out is_current all_preds; |
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val unfinished = filter_out is_finished (all_preds \\ names); |
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in |
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if not (null noncurrent) then err "non-current theories" noncurrent |
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else if not (null unfinished) then err "unfinished ancestor theories" unfinished |
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else seq (fn name => change_thy name (apfst (K Finished))) |
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end; |
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340 |
|
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fun finish name = finishs [name]; |
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342 |
*) |
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343 |
|
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fun update_all () = (); (* FIXME fake *) |
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|
6241 | 346 |
fun finalize_all () = |
6233 | 347 |
(update_all (); change_thys (Graph.map_nodes (fn (_, entry) => (None, entry)))); |
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|
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349 |
|
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350 |
(* register existing theories *) |
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351 |
|
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fun register_theory theory = |
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let |
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val name = PureThy.get_name theory; |
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val parents = Theory.parents_of theory; |
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val parent_names = map PureThy.get_name parents; |
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357 |
|
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fun err txt bads = |
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error (loader_msg txt bads ^ "\n" ^ gen_msg "cannot register theory" [name]); |
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|
6241 | 361 |
val nonfinal = filter_out is_final parent_names; |
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fun get_variant (x, y_name) = |
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if Theory.eq_thy (x, get_theory y_name) then None |
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else Some y_name; |
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val variants = mapfilter get_variant (parents ~~ parent_names); |
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366 |
|
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fun register G = |
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(Graph.new_node (name, (None, Some (theory, Symtab.empty))) G |
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handle Graph.DUPLICATE _ => err "duplicate theory entry" []) |
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|> add_deps name parent_names; |
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in |
6241 | 372 |
if not (null nonfinal) then err "non-final parent theories" nonfinal |
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else if not (null variants) then err "different versions of parent theories" variants |
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374 |
else change_thys register |
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375 |
end; |
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376 |
|
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377 |
|
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378 |
(*final declarations of this structure*) |
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val theory = get_theory; |
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val names = get_names; |
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381 |
|
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382 |
end; |
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383 |
|
5209 | 384 |
structure BasicThyInfo: BASIC_THY_INFO = ThyInfo; |
385 |
open BasicThyInfo; |