src/Pure/pure_syn.ML

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/pure_syn.ML	Wed Aug 22 12:07:11 2012 +0200
@@ -0,0 +1,34 @@
+(*  Title:      Pure/pure_syn.ML
+    Author:     Makarius
+
+Minimal outer syntax for bootstrapping Pure.
+*)
+
+structure Pure_Syn: sig end =
+struct
+
+val _ =
+  Outer_Syntax.command
+    (("theory", Keyword.tag_theory Keyword.thy_begin), Position.none) "begin theory context"
+    (Thy_Header.args >> (fn header =>
+      Toplevel.print o
+        Toplevel.init_theory
+          (fn () => Thy_Info.toplevel_begin_theory (Thy_Load.get_master_path ()) header)));
+
+val _ =
+  Outer_Syntax.command
+    (("ML_file", Keyword.tag_ml Keyword.thy_load), Position.none) "ML text from file"
+    (Scan.ahead Parse.path -- Thy_Load.parse_files "ML_file"
+      >> (fn (src_path, files) => Toplevel.generic_theory (fn gthy =>
+        let
+          val (dir, [(txt, pos)]) = files (Context.theory_of gthy);
+          val provide = Thy_Load.provide (src_path, (File.full_path dir src_path, SHA1.digest txt));
+        in
+          gthy
+          |> ML_Context.exec (fn () => ML_Context.eval_text true pos txt)
+          |> Local_Theory.propagate_ml_env
+          |> Context.mapping provide (Local_Theory.background_theory provide)
+        end)));
+
+end;
+