(*  Title:      Pure/System/build.ML

     Author:     Makarius

 Build Isabelle sessions.

 *)

 signature BUILD =

 sig

   val build: string -> unit

 end;

 structure Build: BUILD =

 struct

 local

 fun use_thys options =

   Thy_Info.use_thys

     |> Unsynchronized.setmp Proofterm.proofs (Options.int options "proofs")

     |> Unsynchronized.setmp print_mode

         (space_explode "," (Options.string options "print_mode") @ print_mode_value ())

     |> Unsynchronized.setmp Goal.parallel_proofs (Options.int options "parallel_proofs")

     |> Unsynchronized.setmp Goal.parallel_proofs_threshold

         (Options.int options "parallel_proofs_threshold")

     |> Unsynchronized.setmp Multithreading.trace (Options.int options "threads_trace")

     |> Unsynchronized.setmp Multithreading.max_threads (Options.int options "threads")

     |> (case Options.string options "document" of "" => true | "false" => true | _ => false) ?

         Present.no_document

     |> Unsynchronized.setmp quick_and_dirty (Options.bool options "quick_and_dirty");

 fun use_theories (options, thys) =

   let val condition = space_explode "," (Options.string options "condition") in

     (case filter_out (can getenv_strict) condition of

       [] => use_thys options thys

     | conds =>

         Output.physical_stderr ("Ignoring theories " ^ commas_quote thys ^

           " (missing " ^ commas conds ^ ")\n"))

   end;

 in

 fun build args_file =

   let

     val (save, (options, (timing, (verbose, (browser_info, (parent,

         (name, (base_name, theories)))))))) =

       File.read (Path.explode args_file) |> YXML.parse_body |>

         let open XML.Decode in

           pair bool (pair Options.decode (pair bool (pair bool (pair string (pair string

             (pair string (pair string ((list (pair Options.decode (list string)))))))))))

         end;

     val _ =

       Session.init save false

         (Options.bool options "browser_info") browser_info

         (Options.string options "document")

         (Options.bool options "document_graph")

         (space_explode ":" (Options.string options "document_variants"))

         parent base_name

         (not (Options.bool options "document_dump_only"), Options.string options "document_dump")

         (Options.string options "browser_info_remote")

         verbose;

     val _ = Session.with_timing name timing (List.app use_theories) theories;

     val _ = Session.finish ();

     val _ = if save then () else quit ();

   in () end

   handle exn => (Output.error_msg (ML_Compiler.exn_message exn); exit 1);

 end;

 end;