src/Pure/PIDE/isar_document.ML
author wenzelm
Fri, 20 Aug 2010 11:57:43 +0200
changeset 38567 b670faa807c9
parent 38483 3d16bebee1d3
child 41634 28d94383249c
permissions -rw-r--r--
concentrate protocol message formats in Isar_Document;
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(*  Title:      Pure/PIDE/isar_document.ML
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    Author:     Makarius
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Protocol message formats for interactive Isar documents.
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*)
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structure Isar_Document: sig end =
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struct
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val global_state = Synchronized.var "Isar_Document" Document.init_state;
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val change_state = Synchronized.change global_state;
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val _ =
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  Isabelle_Process.add_command "Isar_Document.define_command"
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    (fn [id, text] => change_state (Document.define_command (Document.parse_id id) text));
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val _ =
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  Isabelle_Process.add_command "Isar_Document.edit_version"
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    (fn [old_id_string, new_id_string, edits_yxml] => change_state (fn state =>
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      let
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        val old_id = Document.parse_id old_id_string;
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        val new_id = Document.parse_id new_id_string;
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        val edits =
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          XML_Data.dest_list
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            (XML_Data.dest_pair
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              XML_Data.dest_string
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              (XML_Data.dest_option
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                (XML_Data.dest_list
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                  (XML_Data.dest_pair
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                    (XML_Data.dest_option XML_Data.dest_int)
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                    (XML_Data.dest_option XML_Data.dest_int))))) (YXML.parse_body edits_yxml);
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      val (updates, state') = Document.edit old_id new_id edits state;
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      val _ =
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        implode (map (fn (id, exec_id) => Markup.markup (Markup.edit id exec_id) "") updates)
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        |> Markup.markup (Markup.assign new_id)
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        |> Output.status;
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      val state'' = Document.execute new_id state';
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    in state'' end));
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end;
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