src/Pure/Isar/isar_syn.ML
author wenzelm
Mon Nov 09 15:35:00 1998 +0100 (1998-11-09 ago)
changeset 5832 112a67aa9c2c
child 5881 2bded7137593
permissions -rw-r--r--
Pure outer syntax.
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(*  Title:      Pure/Isar/isar_syn.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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Pure outer syntax.
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TODO:
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  - constdefs;
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  - axclass axioms: attribs;
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  - instance: theory_to_proof (with special attribute to add result arity);
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  - witness: eliminate (!?);
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  - result (interactive): print current result (?);
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  - check evaluation of transformers (exns!);
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  - print_thm: attributes;
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  - 'result' command;
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  - '--' (comment) option everywhere;
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  - 'chapter', 'section' etc.;
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*)
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signature ISAR_SYN =
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sig
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  val keywords: string list
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  val parsers: OuterSyntax.parser list
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end;
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structure IsarSyn: ISAR_SYN =
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struct
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open OuterParse;
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(** init and exit **)
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val contextP =
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  OuterSyntax.parser false "context" "switch theory context"
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    (name >> (fn x => Toplevel.print o Toplevel.init_theory (IsarThy.the_theory x) (K ())));
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val theoryP =
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  OuterSyntax.parser false "theory" "begin theory"
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    (name -- ($$$ "=" |-- !!! (enum "+" name --| (Scan.ahead eof || $$$ ":")))
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      >> (fn x => Toplevel.print o
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            Toplevel.init_theory (IsarThy.begin_theory x) IsarThy.end_theory));
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(*end current theory / sub-proof / excursion*)
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val endP =
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  OuterSyntax.parser false "end" "end current theory / sub-proof / excursion"
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    (Scan.succeed (Toplevel.print o Toplevel.exit o Toplevel.proof IsarThy.end_block));
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(** theory sections **)
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(* formal comments *)
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val textP = OuterSyntax.parser false "text" "formal comments"
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  (text >> K (Toplevel.keep (K ())));
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(* classes and sorts *)
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val classesP =
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  OuterSyntax.parser false "classes" "declare type classes"
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    (Scan.repeat1 (name -- Scan.optional ($$$ "<" |-- !!! (list1 xname)) [])
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      >> (Toplevel.theory o Theory.add_classes));
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val classrelP =
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  OuterSyntax.parser false "classrel" "state inclusion of type classes (axiomatic!)"
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    (xname -- ($$$ "<" |-- !!! xname) >> (Toplevel.theory o Theory.add_classrel o single));
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val defaultsortP =
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  OuterSyntax.parser false "defaultsort" "declare default sort"
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    (sort >> (Toplevel.theory o Theory.add_defsort));
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(* types *)
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val typedeclP =
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  OuterSyntax.parser false "typedecl" "declare logical type"
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    (type_args -- name -- opt_infix
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      >> (fn ((args, a), mx) => Toplevel.theory (PureThy.add_typedecls [(a, args, mx)])));
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val typeabbrP =
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  OuterSyntax.parser false "types" "declare type abbreviations"
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    (Scan.repeat1 (type_args -- name -- ($$$ "=" |-- !!! (typ -- opt_infix)))
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      >> (Toplevel.theory o Theory.add_tyabbrs o
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        map (fn ((args, a), (T, mx)) => (a, args, T, mx))));
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val nontermP =
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  OuterSyntax.parser false "nonterminals" "declare types treated as grammar nonterminal symbols"
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    (Scan.repeat1 name >> (Toplevel.theory o Theory.add_nonterminals));
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val aritiesP =
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  OuterSyntax.parser false "arities" "state type arities (axiomatic!)"
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    (Scan.repeat1 (xname -- ($$$ "::" |-- !!! arity) >> triple2)
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      >> (Toplevel.theory o Theory.add_arities));
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(* consts and syntax *)
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val constsP =
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  OuterSyntax.parser false "consts" "declare constants"
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    (Scan.repeat1 const >> (Toplevel.theory o Theory.add_consts));
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val opt_mode =
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  Scan.optional
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    ($$$ "(" |-- !!! (name -- Scan.optional ($$$ "output" >> K false) true --| $$$ ")"))
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    ("", true);
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val syntaxP =
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  OuterSyntax.parser false "syntax" "declare syntactic constants"
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    (opt_mode -- Scan.repeat1 const >> (Toplevel.theory o uncurry Theory.add_modesyntax));
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(* translations *)
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val trans_pat =
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  Scan.optional ($$$ "(" |-- !!! (xname --| $$$ ")")) "logic" -- string;
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fun trans_arrow toks =
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  ($$$ "=>" >> K Syntax.ParseRule ||
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    $$$ "<=" >> K Syntax.PrintRule ||
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    $$$ "==" >> K Syntax.ParsePrintRule) toks;
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val trans_line =
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  trans_pat -- !!! (trans_arrow -- trans_pat)
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    >> (fn (left, (arr, right)) => arr (left, right));
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val translationsP =
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  OuterSyntax.parser false "translations" "declare syntax translation rules"
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    (Scan.repeat1 trans_line >> (Toplevel.theory o Theory.add_trrules));
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(* axioms and definitions *)
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val spec = thm_name -- prop >> (fn ((x, y), z) => ((x, z), y));
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val spec' = opt_thm_name -- prop >> (fn ((x, y), z) => ((x, z), y));
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val axiomsP =
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  OuterSyntax.parser false "axioms" "state arbitrary propositions (axiomatic!)"
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    (Scan.repeat1 spec >> (Toplevel.theory o IsarThy.add_axioms));
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val defsP =
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  OuterSyntax.parser false "defs" "define constants"
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    (Scan.repeat1 spec' >> (Toplevel.theory o IsarThy.add_defs));
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(* axclass *)
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val axclassP =
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  OuterSyntax.parser false "axclass" "define axiomatic type class"
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    (name -- Scan.optional ($$$ "<" |-- !!! (list1 xname)) [] -- Scan.repeat (spec >> fst)
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      >> (Toplevel.theory o uncurry AxClass.add_axclass));
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(* instance *)
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val opt_witness =
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  Scan.optional ($$$ "(" |-- !!! (list1 xname --| $$$ ")")) [];
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val instanceP =
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  OuterSyntax.parser false "instance" "prove type arity"
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    ((xname -- ($$$ "<" |-- xname) >> AxClass.add_inst_subclass ||
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      xname -- ($$$ "::" |-- arity) >> (AxClass.add_inst_arity o triple2))
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    -- opt_witness >> (fn (f, x) => Toplevel.theory (f x [] None)));
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(* name space entry path *)
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val globalP =
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  OuterSyntax.parser false "global" "disable prefixing of theory name"
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    (Scan.succeed (Toplevel.theory PureThy.global_path));
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val localP =
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  OuterSyntax.parser false "local" "enable prefixing of theory name"
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    (Scan.succeed (Toplevel.theory PureThy.local_path));
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val pathP =
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  OuterSyntax.parser false "path" "modify name-space entry path"
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    (xname >> (Toplevel.theory o Theory.add_path));
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(* use ML text *)
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val useP =
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  OuterSyntax.parser true "use" "eval ML text from file"
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    (string >> IsarCmd.use);
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val mlP =
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  OuterSyntax.parser false "ML" "eval ML text"
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    (text >> (fn txt => IsarCmd.use_mltext txt o IsarCmd.use_mltext_theory txt));
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val setupP =
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  OuterSyntax.parser false "setup" "apply ML theory transformer"
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    (text >> (Toplevel.theory o IsarThy.use_setup));
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(* translation functions *)
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val parse_ast_translationP =
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  OuterSyntax.parser false "parse_ast_translation" "install parse ast translation functions"
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    (text >> (Toplevel.theory o IsarThy.parse_ast_translation));
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val parse_translationP =
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  OuterSyntax.parser false "parse_translation" "install parse translation functions"
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    (text >> (Toplevel.theory o IsarThy.parse_translation));
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val print_translationP =
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  OuterSyntax.parser false "print_translation" "install print translation functions"
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    (text >> (Toplevel.theory o IsarThy.print_translation));
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val typed_print_translationP =
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  OuterSyntax.parser false "typed_print_translation" "install typed print translation functions"
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    (text >> (Toplevel.theory o IsarThy.typed_print_translation));
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val print_ast_translationP =
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  OuterSyntax.parser false "print_ast_translation" "install print ast translation functions"
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    (text >> (Toplevel.theory o IsarThy.print_ast_translation));
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val token_translationP =
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  OuterSyntax.parser false "token_translation" "install token translation functions"
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    (text >> (Toplevel.theory o IsarThy.token_translation));
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(* oracles *)
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val oracleP =
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  OuterSyntax.parser false "oracle" "install oracle"
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    (name -- text >> (Toplevel.theory o IsarThy.add_oracle));
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(** proof commands **)
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(* statements *)
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fun statement f = opt_thm_name -- prop >> (fn ((x, y), z) => f x y z);
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val theoremP =
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  OuterSyntax.parser false "theorem" "state theorem"
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    (statement IsarThy.theorem >> (fn f => Toplevel.print o Toplevel.theory_to_proof f));
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val lemmaP =
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  OuterSyntax.parser false "lemma" "state lemma"
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    (statement IsarThy.lemma >> (fn f => Toplevel.print o Toplevel.theory_to_proof f));
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val showP =
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  OuterSyntax.parser false "show" "state local goal, solving current obligation"
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    (statement IsarThy.show >> (fn f => Toplevel.print o Toplevel.proof f));
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val haveP =
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  OuterSyntax.parser false "have" "state local goal"
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    (statement IsarThy.have >> (fn f => Toplevel.print o Toplevel.proof f));
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(* forward chaining *)
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val thenP =
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  OuterSyntax.parser false "then" "forward chaining"
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    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.chain));
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val fromP =
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  OuterSyntax.parser false "from" "forward chaining, from given facts"
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    (enum1 "," xname >> (fn x => Toplevel.print o Toplevel.proof (IsarThy.from_facts x)));
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(* proof context *)
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val assumeP =
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  OuterSyntax.parser false "assume" "assume propositions"
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    (opt_thm_name -- enum1 "," prop >>
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      (fn ((x, y), z) => Toplevel.print o Toplevel.proof (IsarThy.assume x y z)));
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val fixP =
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  OuterSyntax.parser false "fix" "fix variables (Skolem constants)"
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    (enum1 "," (name -- Scan.option ($$$ "::" |-- typ))
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      >> (fn xs => Toplevel.print o Toplevel.proof (IsarThy.fix xs)));
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val letP =
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  OuterSyntax.parser false "let" "bind text variables"
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    (enum1 "and" (term -- ($$$ "=" |-- term))
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      >> (fn bs => Toplevel.print o Toplevel.proof (IsarThy.match_bind bs)));
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(* proof structure *)
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val beginP =
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  OuterSyntax.parser false "begin" "begin block"
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    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.begin_block));
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val nextP =
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  OuterSyntax.parser false "next" "enter next block"
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    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.next_block));
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(* end proof *)
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val qedP =
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  OuterSyntax.parser false "qed" "conclude proof"
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    (Scan.succeed (Toplevel.proof_to_theory IsarThy.qed));
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val qed_withP =
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  OuterSyntax.parser true "qed_with" "conclude proof, may patch name and attributes"
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    (Scan.option name -- Scan.option attribs >> (Toplevel.proof_to_theory o IsarThy.qed_with));
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val kill_proofP =
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  OuterSyntax.parser true "kill" "abort current proof"
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    (Scan.succeed (Toplevel.print o Toplevel.proof_to_theory IsarThy.kill_proof));
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(* proof steps *)
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fun gen_stepP meth int name cmt f =
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  OuterSyntax.parser int name cmt
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    (meth >> (fn txt => Toplevel.print o Toplevel.proof (f txt)));
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val stepP = gen_stepP method;
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val tacP = stepP true "tac" "unstructured backward proof step, ignoring facts" IsarThy.tac;
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val etacP = stepP true "etac" "unstructured backward proof step, using facts" IsarThy.etac;
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val proofP = gen_stepP (Scan.option method) false "proof" "backward proof" IsarThy.proof;
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val terminal_proofP = stepP false "by" "terminal backward proof" IsarThy.terminal_proof;
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val trivial_proofP =
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  OuterSyntax.parser false "." "trivial proof"
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    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.trivial_proof));
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val default_proofP =
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  OuterSyntax.parser false ".." "default proof"
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    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.default_proof));
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(* proof history *)
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val clear_undoP =
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  OuterSyntax.parser true "clear_undo" "clear proof command undo information"
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    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.clear));
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val undoP =
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  OuterSyntax.parser true "undo" "undo proof command"
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    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.undo));
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val redoP =
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  OuterSyntax.parser true "redo" "redo proof command"
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    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.redo));
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val backP =
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  OuterSyntax.parser true "back" "backtracking of proof command"
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    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.back));
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   351
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   352
val prevP =
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   353
  OuterSyntax.parser true "prev" "previous proof state"
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   354
    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.prev));
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   355
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   356
val upP =
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  OuterSyntax.parser true "up" "upper proof state"
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   358
    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.up));
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   359
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   360
val topP =
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  OuterSyntax.parser true "top" "to initial proof state"
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    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.top));
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   363
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   364
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   365
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   366
(** diagnostic commands (for interactive mode only) **)
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   367
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   368
val print_commandsP =
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   369
  OuterSyntax.parser true "help" "print outer syntax (global)"
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   370
    (Scan.succeed (Toplevel.imperative OuterSyntax.print_outer_syntax));
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   371
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   372
val print_theoryP =
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   373
  OuterSyntax.parser true "print_theory" "print logical theory contents (verbose!)"
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   374
    (Scan.succeed IsarCmd.print_theory);
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   375
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   376
val print_syntaxP =
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   377
  OuterSyntax.parser true "print_syntax" "print inner syntax of theory (verbose!)"
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   378
    (Scan.succeed IsarCmd.print_syntax);
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   379
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   380
val print_attributesP =
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   381
  OuterSyntax.parser true "print_attributes" "print attributes known in theory"
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   382
    (Scan.succeed IsarCmd.print_attributes);
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   383
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   384
val print_methodsP =
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   385
  OuterSyntax.parser true "print_methods" "print methods known in theory"
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   386
    (Scan.succeed IsarCmd.print_methods);
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   387
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   388
val print_bindsP =
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   389
  OuterSyntax.parser true "print_binds" "print term bindings of proof context"
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   390
    (Scan.succeed IsarCmd.print_binds);
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   391
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   392
val print_lthmsP =
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   393
  OuterSyntax.parser true "print_facts" "print local theorems of proof context"
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   394
    (Scan.succeed IsarCmd.print_lthms);
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   395
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   396
val print_thmP =
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   397
  OuterSyntax.parser true "print_thm" "print stored theorem(s)"
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   398
    (xname >> IsarCmd.print_thms);
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   399
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   400
val print_propP =
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   401
  OuterSyntax.parser true "print_prop" "read and print proposition"
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   402
    (term >> IsarCmd.print_prop);
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   403
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   404
val print_termP =
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   405
  OuterSyntax.parser true "print_term" "read and print term"
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   406
    (term >> IsarCmd.print_term);
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   407
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   408
val print_typeP =
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   409
  OuterSyntax.parser true "print_type" "read and print type"
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   410
    (typ >> IsarCmd.print_type);
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   411
wenzelm@5832
   412
wenzelm@5832
   413
wenzelm@5832
   414
(** system commands (for interactive mode only) **)
wenzelm@5832
   415
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   416
val cdP =
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   417
  OuterSyntax.parser true "cd" "change current working directory"
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   418
    (string >> IsarCmd.cd);
wenzelm@5832
   419
wenzelm@5832
   420
val pwdP =
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   421
  OuterSyntax.parser true "pwd" "print current working directory"
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   422
    (Scan.succeed IsarCmd.pwd);
wenzelm@5832
   423
wenzelm@5832
   424
val use_thyP =
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   425
  OuterSyntax.parser true "use_thy" "use_thy theory file"
wenzelm@5832
   426
    (string >> IsarCmd.use_thy);
wenzelm@5832
   427
wenzelm@5832
   428
val loadP =
wenzelm@5832
   429
  OuterSyntax.parser true "load" "load theory file"
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   430
    (string >> IsarCmd.load);
wenzelm@5832
   431
wenzelm@5832
   432
val prP =
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   433
  OuterSyntax.parser true "pr" "print current toplevel state"
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   434
    (Scan.succeed (Toplevel.print o Toplevel.imperative (K ())));
wenzelm@5832
   435
wenzelm@5832
   436
wenzelm@5832
   437
val opt_unit = Scan.optional ($$$ "(" -- $$$ ")" >> (K ())) ();
wenzelm@5832
   438
wenzelm@5832
   439
val commitP =
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   440
  OuterSyntax.parser true "commit" "commit current session to ML database"
wenzelm@5832
   441
    (opt_unit >> (K IsarCmd.use_commit));
wenzelm@5832
   442
wenzelm@5832
   443
val quitP =
wenzelm@5832
   444
  OuterSyntax.parser true "quit" "quit Isabelle"
wenzelm@5832
   445
    (opt_unit >> (K IsarCmd.quit));
wenzelm@5832
   446
wenzelm@5832
   447
val exitP =
wenzelm@5832
   448
  OuterSyntax.parser true "exit" "exit Isar loop"
wenzelm@5832
   449
    (Scan.succeed IsarCmd.exit);
wenzelm@5832
   450
wenzelm@5832
   451
val breakP =
wenzelm@5832
   452
  OuterSyntax.parser true "break" "discontinue execution"
wenzelm@5832
   453
    (Scan.succeed IsarCmd.break);
wenzelm@5832
   454
wenzelm@5832
   455
wenzelm@5832
   456
wenzelm@5832
   457
(** the Pure outer syntax **)
wenzelm@5832
   458
wenzelm@5832
   459
(*keep keywords consistent with the parsers, including those in
wenzelm@5832
   460
  outer_parse.ML, otherwise be prepared for unexpected errors*)
wenzelm@5832
   461
wenzelm@5832
   462
val keywords =
wenzelm@5832
   463
 ["(", ")", "*", "+", ",", ":", "::", ";", "<", "<=", "=", "==", "=>",
wenzelm@5832
   464
  "?", "[", "]", "and", "binder", "infixl", "infixr", "mixfix", "output",
wenzelm@5832
   465
  "{", "|", "}"];
wenzelm@5832
   466
wenzelm@5832
   467
val parsers = [
wenzelm@5832
   468
  (*theory structure*)
wenzelm@5832
   469
  contextP, theoryP, endP,
wenzelm@5832
   470
  (*theory sections*)
wenzelm@5832
   471
  textP, classesP, classrelP, defaultsortP, typedeclP, typeabbrP,
wenzelm@5832
   472
  nontermP, aritiesP, constsP, syntaxP, translationsP, axiomsP, defsP,
wenzelm@5832
   473
  axclassP, instanceP, globalP, localP, pathP, useP, mlP, setupP,
wenzelm@5832
   474
  parse_ast_translationP, parse_translationP, print_translationP,
wenzelm@5832
   475
  typed_print_translationP, print_ast_translationP,
wenzelm@5832
   476
  token_translationP, oracleP,
wenzelm@5832
   477
  (*proof commands*)
wenzelm@5832
   478
  theoremP, lemmaP, showP, haveP, assumeP, fixP, letP, thenP, fromP,
wenzelm@5832
   479
  beginP, nextP, qedP, qed_withP, kill_proofP, tacP, etacP, proofP,
wenzelm@5832
   480
  terminal_proofP, trivial_proofP, default_proofP, clear_undoP, undoP,
wenzelm@5832
   481
  redoP, backP, prevP, upP, topP,
wenzelm@5832
   482
  (*diagnostic commands*)
wenzelm@5832
   483
  print_commandsP, print_theoryP, print_syntaxP, print_attributesP,
wenzelm@5832
   484
  print_methodsP, print_bindsP, print_lthmsP, print_thmP, print_propP,
wenzelm@5832
   485
  print_termP, print_typeP,
wenzelm@5832
   486
  (*system commands*)
wenzelm@5832
   487
  cdP, pwdP, use_thyP, loadP, prP, commitP, quitP, exitP, breakP];
wenzelm@5832
   488
wenzelm@5832
   489
wenzelm@5832
   490
end;
wenzelm@5832
   491
wenzelm@5832
   492
wenzelm@5832
   493
(* install the Pure outer syntax *)
wenzelm@5832
   494
wenzelm@5832
   495
OuterSyntax.add_keywords IsarSyn.keywords;
wenzelm@5832
   496
OuterSyntax.add_parsers IsarSyn.parsers;