(*  Title:      Pure/Isar/isar_syn.ML

    Author:     Markus Wenzel, TU Muenchen

Isar/Pure outer syntax.

*)

structure Isar_Syn: sig end =

struct

(** keywords **)

val _ = Context.>> (Context.map_theory

  (fold (fn name => (Keyword.define (name, NONE); Thy_Header.declare_keyword (name, NONE)))

   ["!!", "!", "%", "(", ")", "+", ",", "--", ":", "::", ";", "<", "<=",

    "=", "==", "=>", "?", "[", "\\<equiv>", "\\<leftharpoondown>",

    "\\<rightharpoonup>", "\\<rightleftharpoons>", "\\<subseteq>", "]",

    "advanced", "and", "assumes", "attach", "begin", "binder",

    "constrains", "defines", "fixes", "for", "identifier", "if",

    "imports", "in", "infix", "infixl", "infixr", "is", "keywords",

    "notes", "obtains", "open", "output", "overloaded", "pervasive",

    "shows", "structure", "unchecked", "uses", "where", "|"]));

(** init and exit **)

val _ =

  Outer_Syntax.command ("theory", Keyword.tag_theory Keyword.thy_begin) "begin theory"

    (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 ("end", Keyword.tag_theory Keyword.thy_end) "end (local) theory"

    (Scan.succeed

      (Toplevel.exit o Toplevel.end_local_theory o Toplevel.end_proof (K Proof.end_notepad)));

(** markup commands **)

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("header", Keyword.diag) "theory header"

    (Parse.doc_source >> Isar_Cmd.header_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("chapter", Keyword.thy_heading1) "chapter heading"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("section", Keyword.thy_heading2) "section heading"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("subsection", Keyword.thy_heading3) "subsection heading"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("subsubsection", Keyword.thy_heading4) "subsubsection heading"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.MarkupEnv

    ("text", Keyword.thy_decl) "formal comment (theory)"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Verbatim

    ("text_raw", Keyword.thy_decl) "raw document preparation text"

    (Parse.opt_target -- Parse.doc_source >> Isar_Cmd.local_theory_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("sect", Keyword.tag_proof Keyword.prf_heading2) "formal comment (proof)"

    (Parse.doc_source >> Isar_Cmd.proof_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("subsect", Keyword.tag_proof Keyword.prf_heading3) "formal comment (proof)"

    (Parse.doc_source >> Isar_Cmd.proof_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Markup

    ("subsubsect", Keyword.tag_proof Keyword.prf_heading4) "formal comment (proof)"

    (Parse.doc_source >> Isar_Cmd.proof_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.MarkupEnv

    ("txt", Keyword.tag_proof Keyword.prf_decl) "formal comment (proof)"

    (Parse.doc_source >> Isar_Cmd.proof_markup);

val _ =

  Outer_Syntax.markup_command Thy_Output.Verbatim

    ("txt_raw", Keyword.tag_proof Keyword.prf_decl) "raw document preparation text (proof)"

    (Parse.doc_source >> Isar_Cmd.proof_markup);

(** theory commands **)

(* classes and sorts *)

val _ =

  Outer_Syntax.command ("classes", Keyword.thy_decl) "declare type classes"

    (Scan.repeat1 (Parse.binding -- Scan.optional ((Parse.$$$ "\\<subseteq>" || Parse.$$$ "<") |--

        Parse.!!! (Parse.list1 Parse.class)) [])

      >> (Toplevel.theory o fold AxClass.axiomatize_class_cmd));

val _ =

  Outer_Syntax.command ("classrel", Keyword.thy_decl) "state inclusion of type classes (axiomatic!)"

    (Parse.and_list1 (Parse.class -- ((Parse.$$$ "\\<subseteq>" || Parse.$$$ "<")

        |-- Parse.!!! Parse.class))

    >> (Toplevel.theory o AxClass.axiomatize_classrel_cmd));

val _ =

  Outer_Syntax.local_theory ("default_sort", Keyword.thy_decl)

    "declare default sort for explicit type variables"

    (Parse.sort >> (fn s => fn lthy => Local_Theory.set_defsort (Syntax.read_sort lthy s) lthy));

(* types *)

val _ =

  Outer_Syntax.local_theory ("typedecl", Keyword.thy_decl) "type declaration"

    (Parse.type_args -- Parse.binding -- Parse.opt_mixfix

      >> (fn ((args, a), mx) => Typedecl.typedecl (a, map (rpair dummyS) args, mx) #> snd));

val _ =

  Outer_Syntax.local_theory ("type_synonym", Keyword.thy_decl) "declare type abbreviation"

    (Parse.type_args -- Parse.binding --

      (Parse.$$$ "=" |-- Parse.!!! (Parse.typ -- Parse.opt_mixfix'))

      >> (fn ((args, a), (rhs, mx)) => snd o Typedecl.abbrev_cmd (a, args, mx) rhs));

val _ =

  Outer_Syntax.command ("nonterminal", Keyword.thy_decl)

    "declare syntactic type constructors (grammar nonterminal symbols)"

    (Parse.and_list1 Parse.binding >> (Toplevel.theory o Sign.add_nonterminals_global));

val _ =

  Outer_Syntax.command ("arities", Keyword.thy_decl) "state type arities (axiomatic!)"

    (Scan.repeat1 Parse.arity >> (Toplevel.theory o fold AxClass.axiomatize_arity_cmd));

(* consts and syntax *)

val _ =

  Outer_Syntax.command ("judgment", Keyword.thy_decl) "declare object-logic judgment"

    (Parse.const_binding >> (Toplevel.theory o Object_Logic.add_judgment_cmd));

val _ =

  Outer_Syntax.command ("consts", Keyword.thy_decl) "declare constants"

    (Scan.repeat1 Parse.const_binding >> (Toplevel.theory o Sign.add_consts));

val opt_overloaded = Parse.opt_keyword "overloaded";

val mode_spec =

  (Parse.$$$ "output" >> K ("", false)) ||

    Parse.name -- Scan.optional (Parse.$$$ "output" >> K false) true;

val opt_mode =

  Scan.optional (Parse.$$$ "(" |-- Parse.!!! (mode_spec --| Parse.$$$ ")")) Syntax.mode_default;

val _ =

  Outer_Syntax.command ("syntax", Keyword.thy_decl) "declare syntactic constants"

    (opt_mode -- Scan.repeat1 Parse.const_decl >> (Toplevel.theory o uncurry Sign.add_modesyntax));

val _ =

  Outer_Syntax.command ("no_syntax", Keyword.thy_decl) "delete syntax declarations"

    (opt_mode -- Scan.repeat1 Parse.const_decl >> (Toplevel.theory o uncurry Sign.del_modesyntax));

(* translations *)

val trans_pat =

  Scan.optional

    (Parse.$$$ "(" |-- Parse.!!! (Parse.xname --| Parse.$$$ ")")) "logic"

    -- Parse.inner_syntax Parse.string;

fun trans_arrow toks =

  ((Parse.$$$ "\\<rightharpoonup>" || Parse.$$$ "=>") >> K Syntax.Parse_Rule ||

    (Parse.$$$ "\\<leftharpoondown>" || Parse.$$$ "<=") >> K Syntax.Print_Rule ||

    (Parse.$$$ "\\<rightleftharpoons>" || Parse.$$$ "==") >> K Syntax.Parse_Print_Rule) toks;

val trans_line =

  trans_pat -- Parse.!!! (trans_arrow -- trans_pat)

    >> (fn (left, (arr, right)) => arr (left, right));

val _ =

  Outer_Syntax.command ("translations", Keyword.thy_decl) "declare syntax translation rules"

    (Scan.repeat1 trans_line >> (Toplevel.theory o Isar_Cmd.translations));

val _ =

  Outer_Syntax.command ("no_translations", Keyword.thy_decl) "remove syntax translation rules"

    (Scan.repeat1 trans_line >> (Toplevel.theory o Isar_Cmd.no_translations));

(* axioms and definitions *)

val _ =

  Outer_Syntax.command ("axioms", Keyword.thy_decl) "state arbitrary propositions (axiomatic!)"

    (Scan.repeat1 Parse_Spec.spec >>

      (fn spec => Toplevel.theory (fn thy =>

        (legacy_feature "Old 'axioms' command -- use 'axiomatization' instead";

          Isar_Cmd.add_axioms spec thy))));

val opt_unchecked_overloaded =

  Scan.optional (Parse.$$$ "(" |-- Parse.!!!

    (((Parse.$$$ "unchecked" >> K true) -- Scan.optional (Parse.$$$ "overloaded" >> K true) false ||

      Parse.$$$ "overloaded" >> K (false, true)) --| Parse.$$$ ")")) (false, false);

val _ =

  Outer_Syntax.command ("defs", Keyword.thy_decl) "define constants"

    (opt_unchecked_overloaded --

      Scan.repeat1 (Parse_Spec.thm_name ":" -- Parse.prop >> (fn ((x, y), z) => ((x, z), y)))

      >> (Toplevel.theory o Isar_Cmd.add_defs));

(* constant definitions and abbreviations *)

val _ =

  Outer_Syntax.local_theory' ("definition", Keyword.thy_decl) "constant definition"

    (Parse_Spec.constdef >> (fn args => #2 oo Specification.definition_cmd args));

val _ =

  Outer_Syntax.local_theory' ("abbreviation", Keyword.thy_decl) "constant abbreviation"

    (opt_mode -- (Scan.option Parse_Spec.constdecl -- Parse.prop)

      >> (fn (mode, args) => Specification.abbreviation_cmd mode args));

val _ =

  Outer_Syntax.local_theory ("type_notation", Keyword.thy_decl)

    "add concrete syntax for type constructors"

    (opt_mode -- Parse.and_list1 (Parse.type_const -- Parse.mixfix)

      >> (fn (mode, args) => Specification.type_notation_cmd true mode args));

val _ =

  Outer_Syntax.local_theory ("no_type_notation", Keyword.thy_decl)

    "delete concrete syntax for type constructors"

    (opt_mode -- Parse.and_list1 (Parse.type_const -- Parse.mixfix)

      >> (fn (mode, args) => Specification.type_notation_cmd false mode args));

val _ =

  Outer_Syntax.local_theory ("notation", Keyword.thy_decl)

    "add concrete syntax for constants / fixed variables"

    (opt_mode -- Parse.and_list1 (Parse.const -- Parse_Spec.locale_mixfix)

      >> (fn (mode, args) => Specification.notation_cmd true mode args));

val _ =

  Outer_Syntax.local_theory ("no_notation", Keyword.thy_decl)

    "delete concrete syntax for constants / fixed variables"

    (opt_mode -- Parse.and_list1 (Parse.const -- Parse_Spec.locale_mixfix)

      >> (fn (mode, args) => Specification.notation_cmd false mode args));

(* constant specifications *)

val _ =

  Outer_Syntax.command ("axiomatization", Keyword.thy_decl) "axiomatic constant specification"

    (Scan.optional Parse.fixes [] --

      Scan.optional (Parse.where_ |-- Parse.!!! (Parse.and_list1 Parse_Spec.specs)) []

      >> (fn (x, y) => Toplevel.theory (#2 o Specification.axiomatization_cmd x y)));

(* theorems *)

fun theorems kind =

  Parse_Spec.name_facts -- Parse.for_fixes

    >> (fn (facts, fixes) => #2 oo Specification.theorems_cmd kind facts fixes);

val _ =

  Outer_Syntax.local_theory' ("theorems", Keyword.thy_decl) "define theorems"

    (theorems Thm.theoremK);

val _ =

  Outer_Syntax.local_theory' ("lemmas", Keyword.thy_decl) "define lemmas" (theorems Thm.lemmaK);

val _ =

  Outer_Syntax.local_theory' ("declare", Keyword.thy_decl) "declare theorems"

    (Parse.and_list1 Parse_Spec.xthms1 -- Parse.for_fixes

      >> (fn (facts, fixes) =>

          #2 oo Specification.theorems_cmd "" [(Attrib.empty_binding, flat facts)] fixes));

(* name space entry path *)

fun hide_names name hide what =

  Outer_Syntax.command (name, Keyword.thy_decl) ("hide " ^ what ^ " from name space")

    ((Parse.opt_keyword "open" >> not) -- Scan.repeat1 Parse.xname >>

      (Toplevel.theory o uncurry hide));

val _ = hide_names "hide_class" Isar_Cmd.hide_class "classes";

val _ = hide_names "hide_type" Isar_Cmd.hide_type "types";

val _ = hide_names "hide_const" Isar_Cmd.hide_const "constants";

val _ = hide_names "hide_fact" Isar_Cmd.hide_fact "facts";

(* use ML text *)

val _ =

  Outer_Syntax.command ("use", Keyword.tag_ml Keyword.thy_decl) "ML text from file"

    (Parse.path >> (fn path => Toplevel.generic_theory (Thy_Load.exec_ml path)));

val _ =

  Outer_Syntax.command ("ML", Keyword.tag_ml Keyword.thy_decl)

    "ML text within theory or local theory"

    (Parse.ML_source >> (fn (txt, pos) =>

      Toplevel.generic_theory

        (ML_Context.exec (fn () => ML_Context.eval_text true pos txt) #>

          Local_Theory.propagate_ml_env)));

val _ =

  Outer_Syntax.command ("ML_prf", Keyword.tag_proof Keyword.prf_decl) "ML text within proof"

    (Parse.ML_source >> (fn (txt, pos) =>

      Toplevel.proof (Proof.map_context (Context.proof_map

        (ML_Context.exec (fn () => ML_Context.eval_text true pos txt))) #> Proof.propagate_ml_env)));

val _ =

  Outer_Syntax.command ("ML_val", Keyword.tag_ml Keyword.diag) "diagnostic ML text"

    (Parse.ML_source >> Isar_Cmd.ml_diag true);

val _ =

  Outer_Syntax.command ("ML_command", Keyword.tag_ml Keyword.diag) "diagnostic ML text (silent)"

    (Parse.ML_source >> (Toplevel.no_timing oo Isar_Cmd.ml_diag false));

val _ =

  Outer_Syntax.command ("setup", Keyword.tag_ml Keyword.thy_decl) "ML theory setup"

    (Parse.ML_source >> (Toplevel.theory o Isar_Cmd.global_setup));

val _ =

  Outer_Syntax.local_theory ("local_setup", Keyword.tag_ml Keyword.thy_decl) "ML local theory setup"

    (Parse.ML_source >> Isar_Cmd.local_setup);

val _ =

  Outer_Syntax.command ("attribute_setup", Keyword.tag_ml Keyword.thy_decl) "define attribute in ML"

    (Parse.position Parse.name --

        Parse.!!! (Parse.$$$ "=" |-- Parse.ML_source -- Scan.optional Parse.text "")

      >> (fn (name, (txt, cmt)) => Toplevel.theory (Attrib.attribute_setup name txt cmt)));

val _ =

  Outer_Syntax.command ("method_setup", Keyword.tag_ml Keyword.thy_decl) "define proof method in ML"

    (Parse.position Parse.name --

        Parse.!!! (Parse.$$$ "=" |-- Parse.ML_source -- Scan.optional Parse.text "")

      >> (fn (name, (txt, cmt)) => Toplevel.theory (Method.method_setup name txt cmt)));

val _ =

  Outer_Syntax.local_theory ("declaration", Keyword.tag_ml Keyword.thy_decl)

    "generic ML declaration"

    (Parse.opt_keyword "pervasive" -- Parse.ML_source

      >> (fn (pervasive, txt) => Isar_Cmd.declaration {syntax = false, pervasive = pervasive} txt));

val _ =

  Outer_Syntax.local_theory ("syntax_declaration", Keyword.tag_ml Keyword.thy_decl)

    "generic ML declaration"

    (Parse.opt_keyword "pervasive" -- Parse.ML_source

      >> (fn (pervasive, txt) => Isar_Cmd.declaration {syntax = true, pervasive = pervasive} txt));

val _ =

  Outer_Syntax.local_theory ("simproc_setup", Keyword.tag_ml Keyword.thy_decl)

    "define simproc in ML"

    (Parse.position Parse.name --

      (Parse.$$$ "(" |-- Parse.enum1 "|" Parse.term --| Parse.$$$ ")" --| Parse.$$$ "=") --

      Parse.ML_source -- Scan.optional (Parse.$$$ "identifier" |-- Scan.repeat1 Parse.xname) []

    >> (fn (((a, b), c), d) => Isar_Cmd.simproc_setup a b c d));

(* translation functions *)

val trfun = Parse.opt_keyword "advanced" -- Parse.ML_source;

val _ =

  Outer_Syntax.command ("parse_ast_translation", Keyword.tag_ml Keyword.thy_decl)

    "install parse ast translation functions"

    (trfun >> (Toplevel.theory o Isar_Cmd.parse_ast_translation));

val _ =

  Outer_Syntax.command ("parse_translation", Keyword.tag_ml Keyword.thy_decl)

    "install parse translation functions"

    (trfun >> (Toplevel.theory o Isar_Cmd.parse_translation));

val _ =

  Outer_Syntax.command ("print_translation", Keyword.tag_ml Keyword.thy_decl)

    "install print translation functions"

    (trfun >> (Toplevel.theory o Isar_Cmd.print_translation));

val _ =

  Outer_Syntax.command ("typed_print_translation", Keyword.tag_ml Keyword.thy_decl)

    "install typed print translation functions"

    (trfun >> (Toplevel.theory o Isar_Cmd.typed_print_translation));

val _ =

  Outer_Syntax.command ("print_ast_translation", Keyword.tag_ml Keyword.thy_decl)

    "install print ast translation functions"

    (trfun >> (Toplevel.theory o Isar_Cmd.print_ast_translation));

(* oracles *)

val _ =

  Outer_Syntax.command ("oracle", Keyword.tag_ml Keyword.thy_decl) "declare oracle"

    (Parse.position Parse.name -- (Parse.$$$ "=" |-- Parse.ML_source) >>

      (fn (x, y) => Toplevel.theory (Isar_Cmd.oracle x y)));

(* local theories *)

val _ =

  Outer_Syntax.command ("context", Keyword.thy_decl) "enter local theory context"

    (Parse.position Parse.xname --| Parse.begin >> (fn name =>

      Toplevel.print o Toplevel.begin_local_theory true (Named_Target.context_cmd name)));

(* locales *)

val locale_val =

  Parse_Spec.locale_expression false --

    Scan.optional (Parse.$$$ "+" |-- Parse.!!! (Scan.repeat1 Parse_Spec.context_element)) [] ||

  Scan.repeat1 Parse_Spec.context_element >> pair ([], []);

val _ =

  Outer_Syntax.command ("locale", Keyword.thy_decl) "define named proof context"

    (Parse.binding --

      Scan.optional (Parse.$$$ "=" |-- Parse.!!! locale_val) (([], []), []) -- Parse.opt_begin

      >> (fn ((name, (expr, elems)), begin) =>

          (begin ? Toplevel.print) o Toplevel.begin_local_theory begin

            (Expression.add_locale_cmd I name Binding.empty expr elems #> snd)));

fun parse_interpretation_arguments mandatory =

  Parse.!!! (Parse_Spec.locale_expression mandatory) --

    Scan.optional

      (Parse.where_ |-- Parse.and_list1 (Parse_Spec.opt_thm_name ":" -- Parse.prop)) [];

val _ =

  Outer_Syntax.command ("sublocale", Keyword.thy_goal)

    "prove sublocale relation between a locale and a locale expression"

    (Parse.position Parse.xname --| (Parse.$$$ "\\<subseteq>" || Parse.$$$ "<") --

      parse_interpretation_arguments false

      >> (fn (loc, (expr, equations)) =>

          Toplevel.print o Toplevel.theory_to_proof (Expression.sublocale_cmd I loc expr equations)));

val _ =

  Outer_Syntax.command ("interpretation", Keyword.thy_goal)

    "prove interpretation of locale expression in theory"

    (parse_interpretation_arguments true

      >> (fn (expr, equations) => Toplevel.print o

          Toplevel.theory_to_proof (Expression.interpretation_cmd expr equations)));

val _ =

  Outer_Syntax.command ("interpret", Keyword.tag_proof Keyword.prf_goal)

    "prove interpretation of locale expression in proof context"

    (parse_interpretation_arguments true

      >> (fn (expr, equations) => Toplevel.print o

          Toplevel.proof' (Expression.interpret_cmd expr equations)));

(* classes *)

val class_val =

  Parse_Spec.class_expression --

    Scan.optional (Parse.$$$ "+" |-- Parse.!!! (Scan.repeat1 Parse_Spec.context_element)) [] ||

  Scan.repeat1 Parse_Spec.context_element >> pair [];

val _ =

  Outer_Syntax.command ("class", Keyword.thy_decl) "define type class"

   (Parse.binding -- Scan.optional (Parse.$$$ "=" |-- class_val) ([], []) -- Parse.opt_begin

    >> (fn ((name, (supclasses, elems)), begin) =>

        (begin ? Toplevel.print) o Toplevel.begin_local_theory begin

          (Class_Declaration.class_cmd I name supclasses elems #> snd)));

val _ =

  Outer_Syntax.local_theory_to_proof ("subclass", Keyword.thy_goal) "prove a subclass relation"

    (Parse.class >> Class_Declaration.subclass_cmd I);

val _ =

  Outer_Syntax.command ("instantiation", Keyword.thy_decl) "instantiate and prove type arity"

   (Parse.multi_arity --| Parse.begin

     >> (fn arities => Toplevel.print o

         Toplevel.begin_local_theory true (Class.instantiation_cmd arities)));

val _ =

  Outer_Syntax.command ("instance", Keyword.thy_goal) "prove type arity or subclass relation"

  ((Parse.class --

    ((Parse.$$$ "\\<subseteq>" || Parse.$$$ "<") |-- Parse.!!! Parse.class) >> Class.classrel_cmd ||

    Parse.multi_arity >> Class.instance_arity_cmd)

    >> (Toplevel.print oo Toplevel.theory_to_proof) ||

    Scan.succeed

      (Toplevel.print o Toplevel.local_theory_to_proof NONE (Class.instantiation_instance I)));

(* arbitrary overloading *)

val _ =

  Outer_Syntax.command ("overloading", Keyword.thy_decl) "overloaded definitions"

   (Scan.repeat1 (Parse.name --| (Parse.$$$ "\\<equiv>" || Parse.$$$ "==") -- Parse.term --

      Scan.optional (Parse.$$$ "(" |-- (Parse.$$$ "unchecked" >> K false) --| Parse.$$$ ")") true

      >> Parse.triple1) --| Parse.begin

   >> (fn operations => Toplevel.print o

         Toplevel.begin_local_theory true (Overloading.overloading_cmd operations)));

(* code generation *)

val _ =

  Outer_Syntax.command ("code_datatype", Keyword.thy_decl)

    "define set of code datatype constructors"

    (Scan.repeat1 Parse.term >> (Toplevel.theory o Code.add_datatype_cmd));

(** proof commands **)

(* statements *)

fun gen_theorem schematic kind =

  Outer_Syntax.local_theory_to_proof'

    (if schematic then ("schematic_" ^ kind, Keyword.thy_schematic_goal)

     else (kind, Keyword.thy_goal))

    ("state " ^ (if schematic then "schematic " ^ kind else kind))

    (Scan.optional (Parse_Spec.opt_thm_name ":" --|

      Scan.ahead (Parse_Spec.locale_keyword || Parse_Spec.statement_keyword)) Attrib.empty_binding --

      Parse_Spec.general_statement >> (fn (a, (elems, concl)) =>

        ((if schematic then Specification.schematic_theorem_cmd else Specification.theorem_cmd)

          kind NONE (K I) a elems concl)));

val _ = gen_theorem false Thm.theoremK;

val _ = gen_theorem false Thm.lemmaK;

val _ = gen_theorem false Thm.corollaryK;

val _ = gen_theorem true Thm.theoremK;

val _ = gen_theorem true Thm.lemmaK;

val _ = gen_theorem true Thm.corollaryK;

val _ =

  Outer_Syntax.local_theory_to_proof ("notepad", Keyword.thy_decl)

    "Isar proof state as formal notepad, without any result"

    (Parse.begin >> K Proof.begin_notepad);

val _ =

  Outer_Syntax.command ("have", Keyword.tag_proof Keyword.prf_goal) "state local goal"

    (Parse_Spec.statement >> ((Toplevel.print oo Toplevel.proof') o Isar_Cmd.have));

val _ =

  Outer_Syntax.command ("hence", Keyword.tag_proof Keyword.prf_goal) "abbreviates \"then have\""

    (Parse_Spec.statement >> ((Toplevel.print oo Toplevel.proof') o Isar_Cmd.hence));

val _ =

  Outer_Syntax.command ("show", Keyword.tag_proof Keyword.prf_asm_goal)

    "state local goal, solving current obligation"

    (Parse_Spec.statement >> ((Toplevel.print oo Toplevel.proof') o Isar_Cmd.show));

val _ =

  Outer_Syntax.command ("thus", Keyword.tag_proof Keyword.prf_asm_goal) "abbreviates \"then show\""

    (Parse_Spec.statement >> ((Toplevel.print oo Toplevel.proof') o Isar_Cmd.thus));

(* facts *)

val facts = Parse.and_list1 Parse_Spec.xthms1;

val _ =

  Outer_Syntax.command ("then", Keyword.tag_proof Keyword.prf_chain) "forward chaining"

    (Scan.succeed (Toplevel.print o Toplevel.proof Proof.chain));

val _ =

  Outer_Syntax.command ("from", Keyword.tag_proof Keyword.prf_chain)

    "forward chaining from given facts"

    (facts >> (Toplevel.print oo (Toplevel.proof o Proof.from_thmss_cmd)));

val _ =

  Outer_Syntax.command ("with", Keyword.tag_proof Keyword.prf_chain)

    "forward chaining from given and current facts"

    (facts >> (Toplevel.print oo (Toplevel.proof o Proof.with_thmss_cmd)));

val _ =

  Outer_Syntax.command ("note", Keyword.tag_proof Keyword.prf_decl) "define facts"

    (Parse_Spec.name_facts >> (Toplevel.print oo (Toplevel.proof o Proof.note_thmss_cmd)));

val _ =

  Outer_Syntax.command ("using", Keyword.tag_proof Keyword.prf_decl) "augment goal facts"

    (facts >> (Toplevel.print oo (Toplevel.proof o Proof.using_cmd)));

val _ =

  Outer_Syntax.command ("unfolding", Keyword.tag_proof Keyword.prf_decl)

    "unfold definitions in goal and facts"

    (facts >> (Toplevel.print oo (Toplevel.proof o Proof.unfolding_cmd)));

(* proof context *)

val _ =

  Outer_Syntax.command ("fix", Keyword.tag_proof Keyword.prf_asm)

    "fix local variables (Skolem constants)"

    (Parse.fixes >> (Toplevel.print oo (Toplevel.proof o Proof.fix_cmd)));

val _ =

  Outer_Syntax.command ("assume", Keyword.tag_proof Keyword.prf_asm) "assume propositions"

    (Parse_Spec.statement >> (Toplevel.print oo (Toplevel.proof o Proof.assume_cmd)));

val _ =

  Outer_Syntax.command ("presume", Keyword.tag_proof Keyword.prf_asm)

    "assume propositions, to be established later"

    (Parse_Spec.statement >> (Toplevel.print oo (Toplevel.proof o Proof.presume_cmd)));

val _ =

  Outer_Syntax.command ("def", Keyword.tag_proof Keyword.prf_asm) "local definition"

    (Parse.and_list1

      (Parse_Spec.opt_thm_name ":" --

        ((Parse.binding -- Parse.opt_mixfix) --

          ((Parse.$$$ "\\<equiv>" || Parse.$$$ "==") |-- Parse.!!! Parse.termp)))

    >> (Toplevel.print oo (Toplevel.proof o Proof.def_cmd)));

val _ =

  Outer_Syntax.command ("obtain", Keyword.tag_proof Keyword.prf_asm_goal)

    "generalized elimination"

    (Parse.parname -- Scan.optional (Parse.fixes --| Parse.where_) [] -- Parse_Spec.statement

      >> (fn ((x, y), z) => Toplevel.print o Toplevel.proof' (Obtain.obtain_cmd x y z)));

val _ =

  Outer_Syntax.command ("guess", Keyword.tag_proof Keyword.prf_asm_goal)

    "wild guessing (unstructured)"

    (Scan.optional Parse.fixes [] >> (Toplevel.print oo (Toplevel.proof' o Obtain.guess_cmd)));

val _ =

  Outer_Syntax.command ("let", Keyword.tag_proof Keyword.prf_decl) "bind text variables"

    (Parse.and_list1 (Parse.and_list1 Parse.term -- (Parse.$$$ "=" |-- Parse.term))

      >> (Toplevel.print oo (Toplevel.proof o Proof.let_bind_cmd)));

val _ =

  Outer_Syntax.command ("write", Keyword.tag_proof Keyword.prf_decl)

    "add concrete syntax for constants / fixed variables"

    (opt_mode -- Parse.and_list1 (Parse.const -- Parse_Spec.locale_mixfix)

    >> (fn (mode, args) => Toplevel.print o Toplevel.proof (Proof.write_cmd mode args)));

val case_spec =

  (Parse.$$$ "(" |--

    Parse.!!! (Parse.xname -- Scan.repeat1 (Parse.maybe Parse.binding) --| Parse.$$$ ")") ||

    Parse.xname >> rpair []) -- Parse_Spec.opt_attribs >> Parse.triple1;

val _ =

  Outer_Syntax.command ("case", Keyword.tag_proof Keyword.prf_asm) "invoke local context"

    (case_spec >> (Toplevel.print oo (Toplevel.proof o Proof.invoke_case_cmd)));

(* proof structure *)

val _ =

  Outer_Syntax.command ("{", Keyword.tag_proof Keyword.prf_open) "begin explicit proof block"

    (Scan.succeed (Toplevel.print o Toplevel.proof Proof.begin_block));

val _ =

  Outer_Syntax.command ("}", Keyword.tag_proof Keyword.prf_close) "end explicit proof block"

    (Scan.succeed (Toplevel.print o Toplevel.proof Proof.end_block));

val _ =

  Outer_Syntax.command ("next", Keyword.tag_proof Keyword.prf_block) "enter next proof block"

    (Scan.succeed (Toplevel.print o Toplevel.proof Proof.next_block));

(* end proof *)

val _ =

  Outer_Syntax.command ("qed", Keyword.tag_proof Keyword.qed_block) "conclude (sub-)proof"

    (Scan.option Method.parse >> Isar_Cmd.qed);

val _ =

  Outer_Syntax.command ("by", Keyword.tag_proof Keyword.qed) "terminal backward proof"

    (Method.parse -- Scan.option Method.parse >> Isar_Cmd.terminal_proof);

val _ =

  Outer_Syntax.command ("..", Keyword.tag_proof Keyword.qed) "default proof"

    (Scan.succeed Isar_Cmd.default_proof);

val _ =

  Outer_Syntax.command (".", Keyword.tag_proof Keyword.qed) "immediate proof"

    (Scan.succeed Isar_Cmd.immediate_proof);

val _ =

  Outer_Syntax.command ("done", Keyword.tag_proof Keyword.qed) "done proof"

    (Scan.succeed Isar_Cmd.done_proof);

val _ =

  Outer_Syntax.command ("sorry", Keyword.tag_proof Keyword.qed)

    "skip proof (quick-and-dirty mode only!)"

    (Scan.succeed Isar_Cmd.skip_proof);

val _ =

  Outer_Syntax.command ("oops", Keyword.tag_proof Keyword.qed_global) "forget proof"

    (Scan.succeed Toplevel.forget_proof);

(* proof steps *)

val _ =

  Outer_Syntax.command ("defer", Keyword.tag_proof Keyword.prf_script)

    "shuffle internal proof state"

    (Scan.option Parse.nat >> (Toplevel.print oo (Toplevel.proofs o Proof.defer)));

val _ =

  Outer_Syntax.command ("prefer", Keyword.tag_proof Keyword.prf_script)

    "shuffle internal proof state"

    (Parse.nat >> (Toplevel.print oo (Toplevel.proofs o Proof.prefer)));

val _ =

  Outer_Syntax.command ("apply", Keyword.tag_proof Keyword.prf_script)

    "initial refinement step (unstructured)"

    (Method.parse >> (Toplevel.print oo (Toplevel.proofs o Proof.apply)));

val _ =

  Outer_Syntax.command ("apply_end", Keyword.tag_proof Keyword.prf_script)

    "terminal refinement (unstructured)"

    (Method.parse >> (Toplevel.print oo (Toplevel.proofs o Proof.apply_end)));

val _ =

  Outer_Syntax.command ("proof", Keyword.tag_proof Keyword.prf_block) "backward proof"

    (Scan.option Method.parse >> (fn m => Toplevel.print o

      Toplevel.actual_proof (Proof_Node.applys (Proof.proof m)) o

      Toplevel.skip_proof (fn i => i + 1)));

(* calculational proof commands *)

val calc_args =

  Scan.option (Parse.$$$ "(" |-- Parse.!!! ((Parse_Spec.xthms1 --| Parse.$$$ ")")));

val _ =

  Outer_Syntax.command ("also", Keyword.tag_proof Keyword.prf_decl)

    "combine calculation and current facts"

    (calc_args >> (Toplevel.proofs' o Calculation.also_cmd));

val _ =

  Outer_Syntax.command ("finally", Keyword.tag_proof Keyword.prf_chain)

    "combine calculation and current facts, exhibit result"

    (calc_args >> (Toplevel.proofs' o Calculation.finally_cmd));

val _ =

  Outer_Syntax.command ("moreover", Keyword.tag_proof Keyword.prf_decl)

    "augment calculation by current facts"

    (Scan.succeed (Toplevel.proof' Calculation.moreover));

val _ =

  Outer_Syntax.command ("ultimately", Keyword.tag_proof Keyword.prf_chain)

    "augment calculation by current facts, exhibit result"

    (Scan.succeed (Toplevel.proof' Calculation.ultimately));

(* proof navigation *)

val _ =

  Outer_Syntax.command ("back", Keyword.tag_proof Keyword.prf_script)

    "backtracking of proof command"

    (Scan.succeed (Toplevel.print o Toplevel.actual_proof Proof_Node.back o Toplevel.skip_proof I));

(* nested commands *)

val props_text =

  Scan.optional Parse.properties [] -- Parse.position Parse.string

  >> (fn (props, (str, pos)) =>

      (Position.of_properties (Position.default_properties pos props), str));

val _ =

  Outer_Syntax.improper_command ("Isabelle.command", Keyword.control) "nested Isabelle command"

    (props_text :|-- (fn (pos, str) =>

      (case Outer_Syntax.parse pos str of

        [tr] => Scan.succeed (K tr)

      | _ => Scan.fail_with (K (fn () => "exactly one command expected")))

      handle ERROR msg => Scan.fail_with (K (fn () => msg))));

(** diagnostic commands (for interactive mode only) **)

val opt_modes =

  Scan.optional (Parse.$$$ "(" |-- Parse.!!! (Scan.repeat1 Parse.xname --| Parse.$$$ ")")) [];

val opt_bang = Scan.optional (Parse.$$$ "!" >> K true) false;

val _ =

  Outer_Syntax.improper_command ("pretty_setmargin", Keyword.diag)

    "change default margin for pretty printing"

    (Parse.nat >>

      (fn n => Toplevel.no_timing o Toplevel.imperative (fn () => Pretty.margin_default := n)));

val _ =

  Outer_Syntax.improper_command ("help", Keyword.diag) "print outer syntax commands"

    (Scan.succeed (Toplevel.no_timing o Toplevel.imperative Outer_Syntax.print_outer_syntax));

val _ =

  Outer_Syntax.improper_command ("print_commands", Keyword.diag) "print outer syntax commands"

    (Scan.succeed (Toplevel.no_timing o Toplevel.imperative Outer_Syntax.print_outer_syntax));

val _ =

  Outer_Syntax.improper_command ("print_configs", Keyword.diag) "print configuration options"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_configs));

val _ =

  Outer_Syntax.improper_command ("print_context", Keyword.diag) "print theory context name"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_context));

val _ =

  Outer_Syntax.improper_command ("print_theory", Keyword.diag)

    "print logical theory contents (verbose!)"

    (opt_bang >> (Toplevel.no_timing oo Isar_Cmd.print_theory));

val _ =

  Outer_Syntax.improper_command ("print_syntax", Keyword.diag)

    "print inner syntax of context (verbose!)"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_syntax));

val _ =

  Outer_Syntax.improper_command ("print_abbrevs", Keyword.diag)

    "print constant abbreviation of context"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_abbrevs));

val _ =

  Outer_Syntax.improper_command ("print_theorems", Keyword.diag)

    "print theorems of local theory or proof context"

    (opt_bang >> (Toplevel.no_timing oo Isar_Cmd.print_theorems));

val _ =

  Outer_Syntax.improper_command ("print_locales", Keyword.diag)

    "print locales of this theory"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_locales));

val _ =

  Outer_Syntax.improper_command ("print_classes", Keyword.diag) "print classes of this theory"

    (Scan.succeed (Toplevel.no_timing o Toplevel.unknown_theory o

      Toplevel.keep (Class.print_classes o Toplevel.context_of)));

val _ =

  Outer_Syntax.improper_command ("print_locale", Keyword.diag) "print locale of this theory"

    (opt_bang -- Parse.position Parse.xname >> (Toplevel.no_timing oo Isar_Cmd.print_locale));

val _ =

  Outer_Syntax.improper_command ("print_interps", Keyword.diag)

    "print interpretations of locale for this theory or proof context"

    (Parse.position Parse.xname >> (Toplevel.no_timing oo Isar_Cmd.print_registrations));

val _ =

  Outer_Syntax.improper_command ("print_dependencies", Keyword.diag)

    "print dependencies of locale expression"

    (opt_bang -- Parse_Spec.locale_expression true >>

      (Toplevel.no_timing oo Isar_Cmd.print_dependencies));

val _ =

  Outer_Syntax.improper_command ("print_attributes", Keyword.diag)

    "print attributes of this theory"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_attributes));

val _ =

  Outer_Syntax.improper_command ("print_simpset", Keyword.diag)

    "print context of Simplifier"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_simpset));

val _ =

  Outer_Syntax.improper_command ("print_rules", Keyword.diag) "print intro/elim rules"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_rules));

val _ =

  Outer_Syntax.improper_command ("print_trans_rules", Keyword.diag) "print transitivity rules"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_trans_rules));

val _ =

  Outer_Syntax.improper_command ("print_methods", Keyword.diag) "print methods of this theory"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_methods));

val _ =

  Outer_Syntax.improper_command ("print_antiquotations", Keyword.diag)

    "print antiquotations (global)"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_antiquotations));

val _ =

  Outer_Syntax.improper_command ("thy_deps", Keyword.diag) "visualize theory dependencies"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.thy_deps));

val _ =

  Outer_Syntax.improper_command ("class_deps", Keyword.diag) "visualize class dependencies"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.class_deps));

val _ =

  Outer_Syntax.improper_command ("thm_deps", Keyword.diag) "visualize theorem dependencies"

    (Parse_Spec.xthms1 >> (Toplevel.no_timing oo Isar_Cmd.thm_deps));

val _ =

  Outer_Syntax.improper_command ("print_binds", Keyword.diag) "print term bindings of proof context"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_binds));

val _ =

  Outer_Syntax.improper_command ("print_facts", Keyword.diag) "print facts of proof context"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_facts));

val _ =

  Outer_Syntax.improper_command ("print_cases", Keyword.diag) "print cases of proof context"

    (Scan.succeed (Toplevel.no_timing o Isar_Cmd.print_cases));

val _ =

  Outer_Syntax.improper_command ("print_statement", Keyword.diag)

    "print theorems as long statements"

    (opt_modes -- Parse_Spec.xthms1 >> (Toplevel.no_timing oo Isar_Cmd.print_stmts));

val _ =

  Outer_Syntax.improper_command ("thm", Keyword.diag) "print theorems"

    (opt_modes -- Parse_Spec.xthms1 >> (Toplevel.no_timing oo Isar_Cmd.print_thms));

val _ =

  Outer_Syntax.improper_command ("prf", Keyword.diag) "print proof terms of theorems"

    (opt_modes -- Scan.option Parse_Spec.xthms1

      >> (Toplevel.no_timing oo Isar_Cmd.print_prfs false));

val _ =

  Outer_Syntax.improper_command ("full_prf", Keyword.diag) "print full proof terms of theorems"

    (opt_modes -- Scan.option Parse_Spec.xthms1 >> (Toplevel.no_timing oo Isar_Cmd.print_prfs true));

val _ =

  Outer_Syntax.improper_command ("prop", Keyword.diag) "read and print proposition"

    (opt_modes -- Parse.term >> (Toplevel.no_timing oo Isar_Cmd.print_prop));

val _ =

  Outer_Syntax.improper_command ("term", Keyword.diag) "read and print term"

    (opt_modes -- Parse.term >> (Toplevel.no_timing oo Isar_Cmd.print_term));

val _ =

  Outer_Syntax.improper_command ("typ", Keyword.diag) "read and print type"

    (opt_modes -- Parse.typ >> (Toplevel.no_timing oo Isar_Cmd.print_type));

val _ =

  Outer_Syntax.improper_command ("print_codesetup", Keyword.diag) "print code generator setup"

    (Scan.succeed

      (Toplevel.no_timing o Toplevel.unknown_theory o Toplevel.keep

        (Code.print_codesetup o Toplevel.theory_of)));

val _ =

  Outer_Syntax.improper_command ("unused_thms", Keyword.diag) "find unused theorems"

    (Scan.option ((Scan.repeat1 (Scan.unless Parse.minus Parse.name) --| Parse.minus) --

       Scan.option (Scan.repeat1 (Scan.unless Parse.minus Parse.name))) >>

         (Toplevel.no_timing oo Isar_Cmd.unused_thms));

(** system commands (for interactive mode only) **)

val _ =

  Outer_Syntax.improper_command ("cd", Keyword.control) "change current working directory"

    (Parse.path >> (fn path => Toplevel.no_timing o Toplevel.imperative (fn () => File.cd path)));

val _ =

  Outer_Syntax.improper_command ("pwd", Keyword.diag) "print current working directory"

    (Scan.succeed (Toplevel.no_timing o

      Toplevel.imperative (fn () => writeln (Path.print (File.pwd ())))));

val _ =

  Outer_Syntax.improper_command ("use_thy", Keyword.control) "use theory file"

    (Parse.name >> (fn name =>

      Toplevel.no_timing o Toplevel.imperative (fn () => Thy_Info.use_thy name)));

val _ =

  Outer_Syntax.improper_command ("remove_thy", Keyword.control) "remove theory from loader database"

    (Parse.name >> (fn name =>

      Toplevel.no_timing o Toplevel.imperative (fn () => Thy_Info.remove_thy name)));

val _ =

  Outer_Syntax.improper_command ("kill_thy", Keyword.control)

    "kill theory -- try to remove from loader database"

    (Parse.name >> (fn name =>

      Toplevel.no_timing o Toplevel.imperative (fn () => Thy_Info.kill_thy name)));

val _ =

  Outer_Syntax.improper_command ("display_drafts", Keyword.diag)

    "display raw source files with symbols"

    (Scan.repeat1 Parse.path >> (Toplevel.no_timing oo Isar_Cmd.display_drafts));

val _ =

  Outer_Syntax.improper_command ("print_drafts", Keyword.diag)

    "print raw source files with symbols"

    (Scan.repeat1 Parse.path >> (Toplevel.no_timing oo Isar_Cmd.print_drafts));

val _ =  (* FIXME tty only *)

  Outer_Syntax.improper_command ("pr", Keyword.diag) "print current proof state (if present)"

    (opt_modes -- Scan.option Parse.nat >> (fn (modes, limit) =>

      Toplevel.no_timing o Toplevel.keep (fn state =>

       (case limit of NONE => () | SOME n => Goal_Display.goals_limit_default := n;

        Toplevel.quiet := false;

        Print_Mode.with_modes modes (Toplevel.print_state true) state))));

val _ =

  Outer_Syntax.improper_command ("disable_pr", Keyword.control)

    "disable printing of toplevel state"

    (Scan.succeed (Toplevel.no_timing o Toplevel.imperative (fn () => Toplevel.quiet := true)));

val _ =