src/Pure/Thy/thy_output.ML
author wenzelm
Thu Aug 14 19:52:40 2008 +0200 (2008-08-14)
changeset 27874 f0364f1c0ecf
parent 27809 a1e409db516b
child 27882 eaa9fef9f4c1
permissions -rw-r--r--
antiquotes: proper SymbolPos decoding, adapted Antiquote.read/Antiq;
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(*  Title:      Pure/Thy/thy_output.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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Theory document output.
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*)
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signature THY_OUTPUT =
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sig
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  val display: bool ref
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  val quotes: bool ref
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  val indent: int ref
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  val source: bool ref
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  val add_commands: (string * (Args.src -> Toplevel.node option -> string)) list -> unit
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  val add_options: (string * (string -> (unit -> string) -> unit -> string)) list -> unit
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  val defined_command: string -> bool
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  val defined_option: string -> bool
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  val print_antiquotations: unit -> unit
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  val boolean: string -> bool
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  val integer: string -> int
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  val args: (Context.generic * Args.T list -> 'a * (Context.generic * Args.T list)) ->
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    (Args.src -> Proof.context -> 'a -> string) -> Args.src -> Toplevel.node option -> string
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  datatype markup = Markup | MarkupEnv | Verbatim
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  val modes: string list ref
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  val eval_antiquote: Scan.lexicon -> Toplevel.node option -> SymbolPos.text * Position.T -> string
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  val process_thy: Scan.lexicon -> (string -> string list) -> (markup -> string -> bool) ->
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    Toplevel.transition list -> (OuterLex.token, 'a) Source.source -> Buffer.T
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  val output_list: (Proof.context -> 'a -> Pretty.T) -> Args.src ->
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    Proof.context -> 'a list -> string
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  val output: (Proof.context -> 'a -> Pretty.T) -> Args.src -> Proof.context -> 'a -> string
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end;
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structure ThyOutput: THY_OUTPUT =
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struct
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structure T = OuterLex;
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structure P = OuterParse;
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(** global options **)
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val locale = ref "";
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val display = ref false;
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val quotes = ref false;
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val indent = ref 0;
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val source = ref false;
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val break = ref false;
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(** maintain global commands **)
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local
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val global_commands =
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  ref (Symtab.empty: (Args.src -> Toplevel.node option -> string) Symtab.table);
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val global_options =
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  ref (Symtab.empty: (string -> (unit -> string) -> unit -> string) Symtab.table);
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fun add_item kind (name, x) tab =
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 (if not (Symtab.defined tab name) then ()
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  else warning ("Redefined text antiquotation " ^ kind ^ ": " ^ quote name);
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  Symtab.update (name, x) tab);
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in
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fun add_commands xs = CRITICAL (fn () => change global_commands (fold (add_item "command") xs));
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fun add_options xs = CRITICAL (fn () => change global_options (fold (add_item "option") xs));
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fun defined_command name = Symtab.defined (! global_commands) name;
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fun defined_option name = Symtab.defined (! global_options) name;
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fun command src =
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  let val ((name, _), pos) = Args.dest_src src in
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    (case Symtab.lookup (! global_commands) name of
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      NONE => error ("Unknown text antiquotation command: " ^ quote name ^ Position.str_of pos)
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    | SOME f => f src)
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  end;
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fun option (name, s) f () =
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  (case Symtab.lookup (! global_options) name of
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    NONE => error ("Unknown text antiquotation option: " ^ quote name)
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  | SOME opt => opt s f ());
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fun options [] f = f
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  | options (opt :: opts) f = option opt (options opts f);
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fun print_antiquotations () =
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 [Pretty.big_list "text antiquotation commands:"
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    (map Pretty.str (sort_strings (Symtab.keys (! global_commands)))),
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  Pretty.big_list "text antiquotation options:"
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    (map Pretty.str (sort_strings (Symtab.keys (! global_options))))]
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 |> Pretty.chunks |> Pretty.writeln;
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end;
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(** syntax of antiquotations **)
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(* option values *)
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fun boolean "" = true
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  | boolean "true" = true
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  | boolean "false" = false
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  | boolean s = error ("Bad boolean value: " ^ quote s);
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fun integer s =
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  let
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    fun int ss =
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      (case Library.read_int ss of (i, []) => i
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      | _ => error ("Bad integer value: " ^ quote s));
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  in (case Symbol.explode s of "-" :: ss => ~ (int ss) | ss => int ss) end;
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(* args syntax *)
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fun syntax scan = Args.context_syntax "text antiquotation" scan;
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fun args scan f src node : string =
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  let
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    val loc = if ! locale = "" then NONE else SOME (! locale);
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    val (x, ctxt) = syntax scan src (Toplevel.presentation_context node loc);
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  in f src ctxt x end;
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(* outer syntax *)
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local
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val property = P.xname -- Scan.optional (P.$$$ "=" |-- P.!!! P.xname) "";
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val properties = Scan.optional (P.$$$ "[" |-- P.!!! (P.enum "," property --| P.$$$ "]")) [];
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in
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val antiq = P.!!! (P.position P.xname -- properties -- Args.parse --| Scan.ahead P.eof)
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  >> (fn (((x, pos), y), z) => (y, Args.src ((x, z), pos)));
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end;
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(* eval_antiquote *)
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val modes = ref ([]: string list);
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fun eval_antiquote lex node (txt, pos) =
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  let
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    fun expand (Antiquote.Text s) = s
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      | expand (Antiquote.Antiq x) =
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          let val (opts, src) = Antiquote.read_antiq lex antiq x in
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            options opts (fn () => command src node) ();  (*preview errors!*)
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            PrintMode.with_modes (! modes @ Latex.modes)
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              (Output.no_warnings (options opts (fn () => command src node))) ()
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          end
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      | expand (Antiquote.Open _) = ""
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      | expand (Antiquote.Close _) = "";
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    val ants = Antiquote.read (SymbolPos.explode (txt, pos), pos);
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  in
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    if is_none node andalso exists Antiquote.is_antiq ants then
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      error ("Unknown context -- cannot expand text antiquotations" ^ Position.str_of pos)
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    else implode (map expand ants)
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  end;
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(** present theory source **)
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(*NB: arranging white space around command spans is a black art.*)
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(* presentation tokens *)
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datatype token =
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    NoToken
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  | BasicToken of T.token
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  | MarkupToken of string * (string * Position.T)
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  | MarkupEnvToken of string * (string * Position.T)
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  | VerbatimToken of string * Position.T;
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fun output_token lex state =
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  let
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    val eval = eval_antiquote lex (try Toplevel.node_of state)
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  in
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    fn NoToken => ""
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     | BasicToken tok => Latex.output_basic tok
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     | MarkupToken (cmd, txt) => Latex.output_markup cmd (eval txt)
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     | MarkupEnvToken (cmd, txt) => Latex.output_markup_env cmd (eval txt)
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     | VerbatimToken txt => Latex.output_verbatim (eval txt)
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  end;
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fun basic_token pred (BasicToken tok) = pred tok
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  | basic_token _ _ = false;
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val improper_token = basic_token (not o T.is_proper);
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val comment_token = basic_token T.is_comment;
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val blank_token = basic_token T.is_blank;
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val newline_token = basic_token T.is_newline;
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(* command spans *)
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type command = string * Position.T * string list;   (*name, position, tags*)
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type source = (token * (string * int)) list;        (*token, markup flag, meta-comment depth*)
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datatype span = Span of command * (source * source * source * source) * bool;
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fun make_span cmd src =
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  let
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    fun take_newline (tok :: toks) =
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          if newline_token (fst tok) then ([tok], toks, true)
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          else ([], tok :: toks, false)
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      | take_newline [] = ([], [], false);
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    val (((src_prefix, src_main), src_suffix1), (src_suffix2, src_appendix, newline)) =
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      src
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      |> take_prefix (improper_token o fst)
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      ||>> take_suffix (improper_token o fst)
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      ||>> take_prefix (comment_token o fst)
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      ||> take_newline;
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  in Span (cmd, (src_prefix, src_main, src_suffix1 @ src_suffix2, src_appendix), newline) end;
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(* present spans *)
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local
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fun err_bad_nesting pos =
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  error ("Bad nesting of commands in presentation" ^ pos);
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fun edge which f (x: string option, y) =
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  if x = y then I
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  else (case which (x, y) of NONE => I | SOME txt => Buffer.add (f txt));
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val begin_tag = edge #2 Latex.begin_tag;
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val end_tag = edge #1 Latex.end_tag;
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fun open_delim delim e = edge #2 Latex.begin_delim e #> delim #> edge #2 Latex.end_delim e;
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fun close_delim delim e = edge #1 Latex.begin_delim e #> delim #> edge #1 Latex.end_delim e;
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in
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fun present_span lex default_tags span state state'
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    (tag_stack, active_tag, newline, buffer, present_cont) =
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  let
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    val present = fold (fn (tok, (flag, 0)) =>
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        Buffer.add (output_token lex state' tok)
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        #> Buffer.add flag
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      | _ => I);
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    val Span ((cmd_name, cmd_pos, cmd_tags), srcs, span_newline) = span;
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    val (tag, tags) = tag_stack;
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    val tag' = try hd (fold OuterKeyword.update_tags cmd_tags (the_list tag));
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    val active_tag' =
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      if is_some tag' then tag'
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      else if cmd_name = "end" andalso not (Toplevel.is_toplevel state') then NONE
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      else try hd (default_tags cmd_name);
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    val edge = (active_tag, active_tag');
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    val newline' =
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      if is_none active_tag' then span_newline else newline;
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    val nesting = Toplevel.level state' - Toplevel.level state;
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    val tag_stack' =
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      if nesting = 0 andalso not (Toplevel.is_proof state) then tag_stack
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      else if nesting >= 0 then (tag', replicate nesting tag @ tags)
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      else
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        (case Library.drop (~ nesting - 1, tags) of
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          tgs :: tgss => (tgs, tgss)
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        | [] => err_bad_nesting (Position.str_of cmd_pos));
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    val buffer' =
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      buffer
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      |> end_tag edge
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      |> close_delim (fst present_cont) edge
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      |> snd present_cont
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      |> open_delim (present (#1 srcs)) edge
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      |> begin_tag edge
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      |> present (#2 srcs);
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    val present_cont' =
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      if newline then (present (#3 srcs), present (#4 srcs))
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      else (I, present (#3 srcs) #> present (#4 srcs));
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  in (tag_stack', active_tag', newline', buffer', present_cont') end;
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fun present_trailer ((_, tags), active_tag, _, buffer, present_cont) =
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  if not (null tags) then err_bad_nesting " at end of theory"
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  else
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    buffer
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    |> end_tag (active_tag, NONE)
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    |> close_delim (fst present_cont) (active_tag, NONE)
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    |> snd present_cont;
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end;
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(* process_thy *)
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datatype markup = Markup | MarkupEnv | Verbatim;
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local
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val space_proper =
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  Scan.one T.is_blank -- Scan.many T.is_comment -- Scan.one T.is_proper;
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val is_improper = not o (T.is_proper orf T.is_begin_ignore orf T.is_end_ignore);
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val improper = Scan.many is_improper;
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val improper_end = Scan.repeat (Scan.unless space_proper (Scan.one is_improper));
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val blank_end = Scan.repeat (Scan.unless space_proper (Scan.one T.is_blank));
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val opt_newline = Scan.option (Scan.one T.is_newline);
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val ignore =
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  Scan.depend (fn d => opt_newline |-- Scan.one T.is_begin_ignore
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    >> pair (d + 1)) ||
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  Scan.depend (fn d => Scan.one T.is_end_ignore --|
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    (if d = 0 then Scan.fail_with (K "Bad nesting of meta-comments") else opt_newline)
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    >> pair (d - 1));
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val tag = (improper -- P.$$$ "%" -- improper) |-- P.!!! (P.tag_name --| blank_end);
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val locale =
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  Scan.option ((P.$$$ "(" -- improper -- P.$$$ "in") |--
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    P.!!! (improper |-- P.xname --| (improper -- P.$$$ ")")));
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in
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fun process_thy lex default_tags is_markup trs src =
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  let
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    (* tokens *)
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    val ignored = Scan.state --| ignore
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      >> (fn d => (NONE, (NoToken, ("", d))));
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    fun markup mark mk flag = Scan.peek (fn d =>
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      improper |-- P.position (Scan.one (T.is_kind T.Command andf is_markup mark o T.content_of)) --
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      Scan.repeat tag --
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      P.!!!! ((improper -- locale -- improper) |-- P.doc_source --| improper_end)
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      >> (fn (((tok, pos), tags), txt) =>
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        let val name = T.content_of tok
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        in (SOME (name, pos, tags), (mk (name, txt), (flag, d))) end));
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    val command = Scan.peek (fn d =>
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      P.position (Scan.one (T.is_kind T.Command)) --
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      Scan.repeat tag
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      >> (fn ((tok, pos), tags) =>
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        let val name = T.content_of tok
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        in (SOME (name, pos, tags), (BasicToken tok, (Latex.markup_false, d))) end));
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wenzelm@22124
   349
    val cmt = Scan.peek (fn d =>
wenzelm@27874
   350
      P.$$$ "--" |-- P.!!!! (improper |-- P.doc_source)
wenzelm@22124
   351
      >> (fn txt => (NONE, (MarkupToken ("cmt", txt), ("", d)))));
wenzelm@22124
   352
wenzelm@22124
   353
    val other = Scan.peek (fn d =>
wenzelm@23725
   354
       P.not_eof >> (fn tok => (NONE, (BasicToken tok, ("", d)))));
wenzelm@22124
   355
wenzelm@22124
   356
    val token =
wenzelm@22124
   357
      ignored ||
wenzelm@22124
   358
      markup Markup MarkupToken Latex.markup_true ||
wenzelm@22124
   359
      markup MarkupEnv MarkupEnvToken Latex.markup_true ||
wenzelm@22124
   360
      markup Verbatim (VerbatimToken o #2) "" ||
wenzelm@22124
   361
      command || cmt || other;
wenzelm@22124
   362
wenzelm@22124
   363
wenzelm@22124
   364
    (* spans *)
wenzelm@22124
   365
wenzelm@27732
   366
    val is_eof = fn (_, (BasicToken x, _)) => T.is_eof x | _ => false;
wenzelm@27732
   367
    val stopper = Scan.stopper (K (NONE, (BasicToken T.eof, ("", 0)))) is_eof;
wenzelm@22124
   368
wenzelm@22124
   369
    val cmd = Scan.one (is_some o fst);
wenzelm@27732
   370
    val non_cmd = Scan.one (is_none o fst andf not o is_eof) >> #2;
wenzelm@22124
   371
wenzelm@22124
   372
    val comments = Scan.many (comment_token o fst o snd);
wenzelm@22124
   373
    val blank = Scan.one (blank_token o fst o snd);
wenzelm@22124
   374
    val newline = Scan.one (newline_token o fst o snd);
wenzelm@22124
   375
    val before_cmd =
wenzelm@22124
   376
      Scan.option (newline -- comments) --
wenzelm@22124
   377
      Scan.option (newline -- comments) --
wenzelm@22124
   378
      Scan.option (blank -- comments) -- cmd;
wenzelm@22124
   379
wenzelm@22124
   380
    val span =
wenzelm@22124
   381
      Scan.repeat non_cmd -- cmd --
wenzelm@22124
   382
        Scan.repeat (Scan.unless before_cmd non_cmd) --
wenzelm@22124
   383
        Scan.option (newline >> (single o snd))
wenzelm@22124
   384
      >> (fn (((toks1, (cmd, tok2)), toks3), tok4) =>
wenzelm@22124
   385
          make_span (the cmd) (toks1 @ (tok2 :: (toks3 @ the_default [] tok4))));
wenzelm@22124
   386
wenzelm@22124
   387
    val spans =
wenzelm@22124
   388
      src
wenzelm@22124
   389
      |> Source.filter (not o T.is_semicolon)
wenzelm@22124
   390
      |> Source.source' 0 T.stopper (Scan.error (Scan.bulk token)) NONE
wenzelm@22124
   391
      |> Source.source stopper (Scan.error (Scan.bulk span)) NONE
wenzelm@22124
   392
      |> Source.exhaust;
wenzelm@22124
   393
  in
wenzelm@22124
   394
    if length trs = length spans then
wenzelm@22124
   395
      ((NONE, []), NONE, true, Buffer.empty, (I, I))
wenzelm@22124
   396
      |> Toplevel.present_excursion (trs ~~ map (present_span lex default_tags) spans)
wenzelm@22124
   397
      |> present_trailer
wenzelm@22124
   398
    else error "Messed-up outer syntax for presentation"
wenzelm@22124
   399
  end;
wenzelm@22124
   400
wenzelm@22124
   401
end;
wenzelm@22124
   402
wenzelm@22124
   403
wenzelm@22124
   404
wenzelm@22124
   405
(** setup default output **)
wenzelm@22124
   406
wenzelm@22124
   407
(* options *)
wenzelm@22124
   408
wenzelm@22124
   409
val _ = add_options
wenzelm@22124
   410
 [("show_types", Library.setmp Syntax.show_types o boolean),
wenzelm@22124
   411
  ("show_sorts", Library.setmp Syntax.show_sorts o boolean),
wenzelm@22124
   412
  ("show_structs", Library.setmp show_structs o boolean),
wenzelm@22124
   413
  ("show_question_marks", Library.setmp show_question_marks o boolean),
wenzelm@22124
   414
  ("long_names", Library.setmp NameSpace.long_names o boolean),
wenzelm@22124
   415
  ("short_names", Library.setmp NameSpace.short_names o boolean),
wenzelm@22124
   416
  ("unique_names", Library.setmp NameSpace.unique_names o boolean),
wenzelm@22124
   417
  ("eta_contract", Library.setmp Syntax.eta_contract o boolean),
wenzelm@22124
   418
  ("locale", Library.setmp locale),
wenzelm@22124
   419
  ("display", Library.setmp display o boolean),
wenzelm@22124
   420
  ("break", Library.setmp break o boolean),
wenzelm@22124
   421
  ("quotes", Library.setmp quotes o boolean),
wenzelm@23935
   422
  ("mode", fn s => fn f => PrintMode.with_modes [s] f),
wenzelm@22124
   423
  ("margin", Pretty.setmp_margin o integer),
wenzelm@22124
   424
  ("indent", Library.setmp indent o integer),
wenzelm@22124
   425
  ("source", Library.setmp source o boolean),
wenzelm@22124
   426
  ("goals_limit", Library.setmp goals_limit o integer)];
wenzelm@22124
   427
wenzelm@22124
   428
wenzelm@22124
   429
(* basic pretty printing *)
wenzelm@22124
   430
wenzelm@27809
   431
val str_of_source = space_implode " " o map T.unparse o #2 o #1 o Args.dest_src;
wenzelm@22124
   432
wenzelm@22124
   433
fun tweak_line s =
wenzelm@22124
   434
  if ! display then s else Symbol.strip_blanks s;
wenzelm@22124
   435
wenzelm@22124
   436
val pretty_text = Pretty.chunks o map Pretty.str o map tweak_line o Library.split_lines;
wenzelm@22124
   437
wenzelm@26710
   438
fun pretty_term ctxt t = Syntax.pretty_term (Variable.auto_fixes t ctxt) t;
wenzelm@24920
   439
wenzelm@26710
   440
fun pretty_term_abbrev ctxt t = ProofContext.pretty_term_abbrev (Variable.auto_fixes t ctxt) t;
wenzelm@22124
   441
wenzelm@22124
   442
fun pretty_term_typ ctxt t =
wenzelm@24920
   443
  Syntax.pretty_term ctxt (TypeInfer.constrain (Term.fastype_of t) t);
wenzelm@22124
   444
wenzelm@24920
   445
fun pretty_term_typeof ctxt = Syntax.pretty_typ ctxt o Term.fastype_of;
wenzelm@22124
   446
wenzelm@25373
   447
fun pretty_const ctxt c =
wenzelm@25373
   448
  let
wenzelm@25373
   449
    val t = Const (c, Consts.type_scheme (ProofContext.consts_of ctxt) c)
wenzelm@25373
   450
      handle TYPE (msg, _, _) => error msg;
wenzelm@25373
   451
    val ([t'], _) = Variable.import_terms true [t] ctxt;
wenzelm@25373
   452
  in pretty_term ctxt t' end;
wenzelm@22124
   453
wenzelm@25407
   454
fun pretty_abbrev ctxt s =
wenzelm@22124
   455
  let
wenzelm@25407
   456
    val t = Syntax.parse_term ctxt s |> singleton (ProofContext.standard_infer_types ctxt);
wenzelm@24920
   457
    fun err () = error ("Abbreviated constant expected: " ^ Syntax.string_of_term ctxt t);
wenzelm@22124
   458
    val (head, args) = Term.strip_comb t;
wenzelm@22124
   459
    val (c, T) = Term.dest_Const head handle TERM _ => err ();
wenzelm@25054
   460
    val (U, u) = Consts.the_abbreviation (ProofContext.consts_of ctxt) c
wenzelm@22124
   461
      handle TYPE _ => err ();
wenzelm@22124
   462
    val t' = Term.betapplys (Envir.expand_atom T (U, u), args);
wenzelm@22124
   463
  in pretty_term_abbrev ctxt (Logic.mk_equals (t, t')) end;
wenzelm@22124
   464
wenzelm@22124
   465
fun pretty_thm ctxt = pretty_term ctxt o Thm.full_prop_of;
wenzelm@22124
   466
wenzelm@22124
   467
fun pretty_term_style ctxt (name, t) =
wenzelm@22124
   468
  pretty_term ctxt (TermStyle.the_style (ProofContext.theory_of ctxt) name ctxt t);
wenzelm@22124
   469
wenzelm@22124
   470
fun pretty_thm_style ctxt (name, th) =
wenzelm@22124
   471
  pretty_term_style ctxt (name, Thm.full_prop_of th);
wenzelm@22124
   472
wenzelm@22124
   473
fun pretty_prf full ctxt thms =
wenzelm@27258
   474
  Pretty.chunks (map (ProofSyntax.pretty_proof_of ctxt full) thms);
wenzelm@22124
   475
wenzelm@22124
   476
fun pretty_theory ctxt name =
wenzelm@22124
   477
  (Theory.requires (ProofContext.theory_of ctxt) name "presentation"; Pretty.str name);
wenzelm@22124
   478
wenzelm@22124
   479
wenzelm@22124
   480
(* Isar output *)
wenzelm@22124
   481
wenzelm@22124
   482
fun output_list pretty src ctxt xs =
wenzelm@22124
   483
  map (pretty ctxt) xs        (*always pretty in order to exhibit errors!*)
wenzelm@22124
   484
  |> (if ! source then K [pretty_text (str_of_source src)] else I)
wenzelm@22124
   485
  |> (if ! quotes then map Pretty.quote else I)
wenzelm@22124
   486
  |> (if ! display then
wenzelm@22124
   487
    map (Output.output o Pretty.string_of o Pretty.indent (! indent))
wenzelm@22124
   488
    #> space_implode "\\isasep\\isanewline%\n"
wenzelm@22124
   489
    #> enclose "\\begin{isabelle}%\n" "%\n\\end{isabelle}"
wenzelm@22124
   490
  else
wenzelm@22124
   491
    map (Output.output o (if ! break then Pretty.string_of else Pretty.str_of))
wenzelm@22124
   492
    #> space_implode "\\isasep\\isanewline%\n"
wenzelm@22124
   493
    #> enclose "\\isa{" "}");
wenzelm@22124
   494
wenzelm@22124
   495
fun output pretty src ctxt = output_list pretty src ctxt o single;
wenzelm@22124
   496
wenzelm@22124
   497
fun proof_state node =
wenzelm@22124
   498
  (case Option.map Toplevel.proof_node node of
wenzelm@27566
   499
    SOME (SOME prf) => ProofNode.current prf
wenzelm@22124
   500
  | _ => error "No proof state");
wenzelm@22124
   501
wenzelm@22124
   502
fun output_goals main_goal src node = args (Scan.succeed ()) (output (fn _ => fn _ =>
wenzelm@22124
   503
  Pretty.chunks (Proof.pretty_goals main_goal (proof_state node)))) src node;
wenzelm@22124
   504
wenzelm@22124
   505
fun ml_val txt = "fn _ => (" ^ txt ^ ");";
wenzelm@22124
   506
fun ml_type txt = "val _ = NONE : (" ^ txt ^ ") option;";
wenzelm@22124
   507
fun ml_struct txt = "functor DUMMY_FUNCTOR() = struct structure DUMMY = " ^ txt ^ " end;"
wenzelm@22124
   508
wenzelm@26385
   509
fun output_ml ml src ctxt (txt, pos) =
wenzelm@26455
   510
 (ML_Context.eval_in (SOME (Context.Proof ctxt)) false pos (ml txt);
wenzelm@22124
   511
  (if ! source then str_of_source src else txt)
wenzelm@22124
   512
  |> (if ! quotes then quote else I)
wenzelm@22124
   513
  |> (if ! display then enclose "\\begin{verbatim}\n" "\n\\end{verbatim}"
wenzelm@22124
   514
  else
wenzelm@22124
   515
    split_lines
wenzelm@22124
   516
    #> map (space_implode "\\verb,|," o map (enclose "\\verb|" "|") o space_explode "|")
wenzelm@22124
   517
    #> space_implode "\\isasep\\isanewline%\n"));
wenzelm@22124
   518
wenzelm@22124
   519
wenzelm@27522
   520
(* embedded lemmas *)
wenzelm@27522
   521
wenzelm@27522
   522
fun pretty_lemma ctxt (prop, methods) =
wenzelm@27522
   523
  let
wenzelm@27522
   524
    val _ = ctxt
wenzelm@27522
   525
      |> Proof.theorem_i NONE (K I) [[(prop, [])]]
wenzelm@27522
   526
      |> Proof.global_terminal_proof methods;
wenzelm@27522
   527
  in pretty_term ctxt prop end;
wenzelm@22124
   528
wenzelm@27381
   529
val embedded_lemma =
wenzelm@27809
   530
  args (Args.prop -- Scan.lift (Args.$$$ "by" |-- Method.parse -- Scan.option Method.parse))
wenzelm@27381
   531
    (output pretty_lemma o (fn ((a, arg :: _), p) => (Args.src ((a, [arg]), p))) o Args.dest_src);
wenzelm@27381
   532
wenzelm@27522
   533
wenzelm@27522
   534
(* commands *)
wenzelm@27522
   535
wenzelm@27381
   536
val _ = OuterKeyword.keyword "by";
wenzelm@27381
   537
wenzelm@22124
   538
val _ = add_commands
wenzelm@22124
   539
 [("thm", args Attrib.thms (output_list pretty_thm)),
wenzelm@22124
   540
  ("thm_style", args (Scan.lift Args.liberal_name -- Attrib.thm) (output pretty_thm_style)),
wenzelm@22124
   541
  ("prop", args Args.prop (output pretty_term)),
wenzelm@27381
   542
  ("lemma", embedded_lemma),
wenzelm@22124
   543
  ("term", args Args.term (output pretty_term)),
wenzelm@22124
   544
  ("term_style", args (Scan.lift Args.liberal_name -- Args.term) (output pretty_term_style)),
wenzelm@22124
   545
  ("term_type", args Args.term (output pretty_term_typ)),
wenzelm@22124
   546
  ("typeof", args Args.term (output pretty_term_typeof)),
wenzelm@25373
   547
  ("const", args Args.const_proper (output pretty_const)),
wenzelm@25407
   548
  ("abbrev", args (Scan.lift Args.name) (output pretty_abbrev)),
wenzelm@24920
   549
  ("typ", args Args.typ_abbrev (output Syntax.pretty_typ)),
wenzelm@22124
   550
  ("text", args (Scan.lift Args.name) (output (K pretty_text))),
wenzelm@22124
   551
  ("goals", output_goals true),
wenzelm@22124
   552
  ("subgoals", output_goals false),
wenzelm@22124
   553
  ("prf", args Attrib.thms (output (pretty_prf false))),
wenzelm@22124
   554
  ("full_prf", args Attrib.thms (output (pretty_prf true))),
wenzelm@22124
   555
  ("theory", args (Scan.lift Args.name) (output pretty_theory)),
wenzelm@27809
   556
  ("ML", args (Scan.lift (P.position Args.name)) (output_ml ml_val)),
wenzelm@27809
   557
  ("ML_type", args (Scan.lift (P.position Args.name)) (output_ml ml_type)),
wenzelm@27809
   558
  ("ML_struct", args (Scan.lift (P.position Args.name)) (output_ml ml_struct))];
wenzelm@22124
   559
wenzelm@22124
   560
end;