(* Title: Pure/PIDE/resources.ML
Author: Makarius
Resources for theories and auxiliary files.
*)
signature RESOURCES =
sig
val master_directory: theory -> Path.T
val imports_of: theory -> (string * Position.T) list
val thy_path: Path.T -> Path.T
val check_thy: Path.T -> string ->
{master: Path.T * SHA1.digest, text: string, theory_pos: Position.T,
imports: (string * Position.T) list, keywords: Thy_Header.keywords}
val parse_files: string -> (theory -> Token.file list) parser
val provide: Path.T * SHA1.digest -> theory -> theory
val provide_parse_files: string -> (theory -> Token.file list * theory) parser
val loaded_files_current: theory -> bool
val begin_theory: Path.T -> Thy_Header.header -> theory list -> theory
val load_thy: bool -> (Toplevel.transition -> Time.time option) -> int -> Path.T ->
Thy_Header.header -> Position.T -> string -> theory list -> theory * (unit -> unit) * int
end;
structure Resources: RESOURCES =
struct
(* manage source files *)
type files =
{master_dir: Path.T, (*master directory of theory source*)
imports: (string * Position.T) list, (*source specification of imports*)
provided: (Path.T * SHA1.digest) list}; (*source path, digest*)
fun make_files (master_dir, imports, provided): files =
{master_dir = master_dir, imports = imports, provided = provided};
structure Files = Theory_Data
(
type T = files;
val empty = make_files (Path.current, [], []);
fun extend _ = empty;
fun merge _ = empty;
);
fun map_files f =
Files.map (fn {master_dir, imports, provided} =>
make_files (f (master_dir, imports, provided)));
val master_directory = #master_dir o Files.get;
val imports_of = #imports o Files.get;
fun put_deps master_dir imports = map_files (fn _ => (master_dir, imports, []));
(* theory files *)
val thy_path = Path.ext "thy";
fun check_file dir file = File.check_file (File.full_path dir file);
fun check_thy dir thy_name =
let
val path = thy_path (Path.basic thy_name);
val master_file = check_file dir path;
val text = File.read master_file;
val {name = (name, pos), imports, keywords} =
Thy_Header.read (Path.position master_file) text;
val _ = thy_name <> name andalso
error ("Bad file name " ^ Path.print path ^ " for theory " ^ quote name ^ Position.here pos);
in
{master = (master_file, SHA1.digest text), text = text, theory_pos = pos,
imports = imports, keywords = keywords}
end;
(* load files *)
fun parse_files cmd =
Scan.ahead Parse.not_eof -- Parse.path >> (fn (tok, name) => fn thy =>
(case Token.get_files tok of
[] =>
let
val keywords = Thy_Header.get_keywords thy;
val master_dir = master_directory thy;
val pos = Token.pos_of tok;
val src_paths = Keyword.command_files keywords cmd (Path.explode name);
in map (Command.read_file master_dir pos) src_paths end
| files => map Exn.release files));
fun provide (src_path, id) =
map_files (fn (master_dir, imports, provided) =>
if AList.defined (op =) provided src_path then
error ("Duplicate use of source file: " ^ Path.print src_path)
else (master_dir, imports, (src_path, id) :: provided));
fun provide_parse_files cmd =
parse_files cmd >> (fn files => fn thy =>
let
val fs = files thy;
val thy' = fold (fn {src_path, digest, ...} => provide (src_path, digest)) fs thy;
in (fs, thy') end);
fun load_file thy src_path =
let
val full_path = check_file (master_directory thy) src_path;
val text = File.read full_path;
val id = SHA1.digest text;
in ((full_path, id), text) end;
fun loaded_files_current thy =
#provided (Files.get thy) |>
forall (fn (src_path, id) =>
(case try (load_file thy) src_path of
NONE => false
| SOME ((_, id'), _) => id = id'));
(* load theory *)
fun begin_theory master_dir {name, imports, keywords} parents =
Theory.begin_theory name parents
|> put_deps master_dir imports
|> Thy_Header.add_keywords keywords;
fun excursion keywords master_dir last_timing init elements =
let
fun prepare_span st span =
Command_Span.content span
|> Command.read keywords (Command.read_thy st) master_dir init []
|> (fn tr => Toplevel.put_timing (last_timing tr) tr);
fun element_result span_elem (st, _) =
let
val elem = Thy_Syntax.map_element (prepare_span st) span_elem;
val (results, st') = Toplevel.element_result keywords elem st;
val pos' = Toplevel.pos_of (Thy_Syntax.last_element elem);
in (results, (st', pos')) end;
val (results, (end_state, end_pos)) =
fold_map element_result elements (Toplevel.toplevel, Position.none);
val thy = Toplevel.end_theory end_pos end_state;
in (results, thy) end;
fun load_thy document last_timing update_time master_dir header text_pos text parents =
let
val (name, _) = #name header;
val keywords =
fold (curry Keyword.merge_keywords o Thy_Header.get_keywords) parents
(Keyword.add_keywords (#keywords header) Keyword.empty_keywords);
val toks = Token.explode keywords text_pos text;
val spans = Outer_Syntax.parse_spans toks;
val elements = Thy_Syntax.parse_elements keywords spans;
fun init () =
begin_theory master_dir header parents
|> Present.begin_theory update_time
(fn () => HTML.html_mode (implode o map Thy_Syntax.present_span) spans);
val (results, thy) =
cond_timeit true ("theory " ^ quote name)
(fn () => excursion keywords master_dir last_timing init elements);
fun present () =
let
val res = filter_out (Toplevel.is_ignored o #1) (maps Toplevel.join_results results);
in
if exists (Toplevel.is_skipped_proof o #2) res then
warning ("Cannot present theory with skipped proofs: " ^ quote name)
else
let val tex_source = Thy_Output.present_thy thy res toks |> Buffer.content;
in if document then Present.theory_output name tex_source else () end
end;
in (thy, present, size text) end;
(* antiquotations *)
local
fun check_path strict ctxt dir (name, pos) =
let
val _ = Context_Position.report ctxt pos Markup.language_path;
val path = Path.append dir (Path.explode name)
handle ERROR msg => error (msg ^ Position.here pos);
val _ = Context_Position.report ctxt pos (Markup.path (Path.smart_implode path));
val _ =
if can Path.expand path andalso File.exists path then ()
else
let
val path' = perhaps (try Path.expand) path;
val msg = "Bad file: " ^ Path.print path' ^ Position.here pos;
in
if strict then error msg
else if Context_Position.is_visible ctxt then
Output.report
[Markup.markup (Markup.bad |> Markup.properties (Position.properties_of pos)) msg]
else ()
end;
in path end;
fun file_antiq strict ctxt (name, pos) =
let
val dir = master_directory (Proof_Context.theory_of ctxt);
val _ = check_path strict ctxt dir (name, pos);
in
space_explode "/" name
|> map Latex.output_ascii
|> space_implode (Latex.output_ascii "/" ^ "\\discretionary{}{}{}")
|> enclose "\\isatt{" "}"
end;
in
val _ = Theory.setup
(Thy_Output.antiquotation @{binding file} (Scan.lift (Parse.position Parse.path))
(file_antiq true o #context) #>
Thy_Output.antiquotation @{binding file_unchecked} (Scan.lift (Parse.position Parse.path))
(file_antiq false o #context) #>
ML_Antiquotation.value @{binding path}
(Args.context -- Scan.lift (Parse.position Parse.path) >> (fn (ctxt, arg) =>
let val path = check_path true ctxt Path.current arg
in "Path.explode " ^ ML_Syntax.print_string (Path.implode path) end)));
end;
end;