src/Pure/Syntax/syntax.ML
author wenzelm
Thu May 27 18:10:37 2010 +0200 (2010-05-27)
changeset 37146 f652333bbf8e
parent 36739 e9401d2efc5f
child 37216 3165bc303f66
permissions -rw-r--r--
renamed structure PrintMode to Print_Mode, keeping the old name as legacy alias for some time;
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(*  Title:      Pure/Syntax/syntax.ML
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    Author:     Tobias Nipkow and Markus Wenzel, TU Muenchen
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Standard Isabelle syntax, based on arbitrary context-free grammars
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(specified by mixfix declarations).
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*)
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signature BASIC_SYNTAX =
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sig
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  include AST0
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  include SYN_TRANS0
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  include MIXFIX0
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  include PRINTER0
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end;
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signature SYNTAX =
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sig
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  include AST1
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  include LEXICON0
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  include SYN_EXT0
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  include TYPE_EXT0
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  include SYN_TRANS1
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  include MIXFIX1
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  include PRINTER0
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  type syntax
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  val eq_syntax: syntax * syntax -> bool
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  val is_keyword: syntax -> string -> bool
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  type mode
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  val mode_default: mode
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  val mode_input: mode
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  val merge_syntaxes: syntax -> syntax -> syntax
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  val basic_syntax: syntax
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  val basic_nonterms: string list
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  val print_gram: syntax -> unit
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  val print_trans: syntax -> unit
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  val print_syntax: syntax -> unit
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  val guess_infix: syntax -> string -> mixfix option
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  val read_token: string -> Symbol_Pos.T list * Position.T
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  val ambiguity_is_error: bool Unsynchronized.ref
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  val ambiguity_level: int Unsynchronized.ref
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  val ambiguity_limit: int Unsynchronized.ref
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  val standard_parse_term: Pretty.pp -> (term -> string option) ->
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    (((string * int) * sort) list -> string * int -> Term.sort) ->
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    (string -> bool * string) -> (string -> string option) -> Proof.context ->
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    (string -> bool) -> syntax -> typ -> Symbol_Pos.T list * Position.T -> term
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  val standard_parse_typ: Proof.context -> syntax ->
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    ((indexname * sort) list -> indexname -> sort) -> Symbol_Pos.T list * Position.T -> typ
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  val standard_parse_sort: Proof.context -> syntax -> Symbol_Pos.T list * Position.T -> sort
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  datatype 'a trrule =
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    ParseRule of 'a * 'a |
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    PrintRule of 'a * 'a |
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    ParsePrintRule of 'a * 'a
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  val map_trrule: ('a -> 'b) -> 'a trrule -> 'b trrule
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  val is_const: syntax -> string -> bool
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  val standard_unparse_term: {structs: string list, fixes: string list} ->
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    {extern_class: string -> xstring, extern_type: string -> xstring,
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      extern_const: string -> xstring} -> Proof.context -> syntax -> bool -> term -> Pretty.T
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  val standard_unparse_typ: {extern_class: string -> xstring, extern_type: string -> xstring} ->
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    Proof.context -> syntax -> typ -> Pretty.T
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  val standard_unparse_sort: {extern_class: string -> xstring} ->
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    Proof.context -> syntax -> sort -> Pretty.T
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  val update_trfuns:
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    (string * ((ast list -> ast) * stamp)) list *
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    (string * ((term list -> term) * stamp)) list *
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    (string * ((bool -> typ -> term list -> term) * stamp)) list *
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    (string * ((ast list -> ast) * stamp)) list -> syntax -> syntax
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  val update_advanced_trfuns:
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    (string * ((Proof.context -> ast list -> ast) * stamp)) list *
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    (string * ((Proof.context -> term list -> term) * stamp)) list *
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    (string * ((Proof.context -> bool -> typ -> term list -> term) * stamp)) list *
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    (string * ((Proof.context -> ast list -> ast) * stamp)) list -> syntax -> syntax
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  val extend_tokentrfuns: (string * string * (Proof.context -> string -> Pretty.T)) list ->
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    syntax -> syntax
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  val update_type_gram: bool -> mode -> (string * typ * mixfix) list -> syntax -> syntax
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  val update_const_gram: bool -> (string -> bool) ->
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    mode -> (string * typ * mixfix) list -> syntax -> syntax
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  val update_trrules: Proof.context -> (string -> bool) -> syntax ->
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    (string * string) trrule list -> syntax -> syntax
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  val remove_trrules: Proof.context -> (string -> bool) -> syntax ->
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    (string * string) trrule list -> syntax -> syntax
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  val update_trrules_i: ast trrule list -> syntax -> syntax
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  val remove_trrules_i: ast trrule list -> syntax -> syntax
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  val parse_token: Markup.T -> string -> Symbol_Pos.T list * Position.T
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  val parse_sort: Proof.context -> string -> sort
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  val parse_typ: Proof.context -> string -> typ
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  val parse_term: Proof.context -> string -> term
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  val parse_prop: Proof.context -> string -> term
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  val unparse_sort: Proof.context -> sort -> Pretty.T
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  val unparse_classrel: Proof.context -> class list -> Pretty.T
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  val unparse_arity: Proof.context -> arity -> Pretty.T
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  val unparse_typ: Proof.context -> typ -> Pretty.T
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  val unparse_term: Proof.context -> term -> Pretty.T
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  val install_operations:
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   {parse_sort: Proof.context -> string -> sort,
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    parse_typ: Proof.context -> string -> typ,
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    parse_term: Proof.context -> string -> term,
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    parse_prop: Proof.context -> string -> term,
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    unparse_sort: Proof.context -> sort -> Pretty.T,
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    unparse_typ: Proof.context -> typ -> Pretty.T,
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    unparse_term: Proof.context -> term -> Pretty.T} -> unit
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  val print_checks: Proof.context -> unit
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  val add_typ_check: int -> string ->
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    (typ list -> Proof.context -> (typ list * Proof.context) option) ->
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    Context.generic -> Context.generic
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  val add_term_check: int -> string ->
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    (term list -> Proof.context -> (term list * Proof.context) option) ->
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    Context.generic -> Context.generic
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  val add_typ_uncheck: int -> string ->
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    (typ list -> Proof.context -> (typ list * Proof.context) option) ->
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    Context.generic -> Context.generic
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  val add_term_uncheck: int -> string ->
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    (term list -> Proof.context -> (term list * Proof.context) option) ->
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    Context.generic -> Context.generic
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  val check_sort: Proof.context -> sort -> sort
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  val check_typ: Proof.context -> typ -> typ
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  val check_term: Proof.context -> term -> term
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  val check_prop: Proof.context -> term -> term
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  val check_typs: Proof.context -> typ list -> typ list
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  val check_terms: Proof.context -> term list -> term list
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  val check_props: Proof.context -> term list -> term list
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  val uncheck_sort: Proof.context -> sort -> sort
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  val uncheck_arity: Proof.context -> arity -> arity
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  val uncheck_classrel: Proof.context -> class list -> class list
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  val uncheck_typs: Proof.context -> typ list -> typ list
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  val uncheck_terms: Proof.context -> term list -> term list
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  val read_sort: Proof.context -> string -> sort
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  val read_typ: Proof.context -> string -> typ
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  val read_term: Proof.context -> string -> term
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  val read_prop: Proof.context -> string -> term
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  val read_terms: Proof.context -> string list -> term list
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  val read_props: Proof.context -> string list -> term list
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  val read_sort_global: theory -> string -> sort
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  val read_typ_global: theory -> string -> typ
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  val read_term_global: theory -> string -> term
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  val read_prop_global: theory -> string -> term
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  val pretty_term: Proof.context -> term -> Pretty.T
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  val pretty_typ: Proof.context -> typ -> Pretty.T
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  val pretty_sort: Proof.context -> sort -> Pretty.T
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  val pretty_classrel: Proof.context -> class list -> Pretty.T
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  val pretty_arity: Proof.context -> arity -> Pretty.T
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  val string_of_term: Proof.context -> term -> string
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  val string_of_typ: Proof.context -> typ -> string
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  val string_of_sort: Proof.context -> sort -> string
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  val string_of_classrel: Proof.context -> class list -> string
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  val string_of_arity: Proof.context -> arity -> string
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  val is_pretty_global: Proof.context -> bool
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  val set_pretty_global: bool -> Proof.context -> Proof.context
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  val init_pretty_global: theory -> Proof.context
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  val pretty_term_global: theory -> term -> Pretty.T
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  val pretty_typ_global: theory -> typ -> Pretty.T
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  val pretty_sort_global: theory -> sort -> Pretty.T
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  val string_of_term_global: theory -> term -> string
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  val string_of_typ_global: theory -> typ -> string
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  val string_of_sort_global: theory -> sort -> string
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  val pp: Proof.context -> Pretty.pp
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  val pp_global: theory -> Pretty.pp
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end;
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structure Syntax: SYNTAX =
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struct
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(** tables of translation functions **)
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(* parse (ast) translations *)
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fun lookup_tr tab c = Option.map fst (Symtab.lookup tab c);
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fun err_dup_trfun name c =
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  error ("More than one " ^ name ^ " for " ^ quote c);
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fun remove_trtab trfuns = fold (Symtab.remove SynExt.eq_trfun) trfuns;
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fun update_trtab name trfuns tab = fold Symtab.update_new trfuns (remove_trtab trfuns tab)
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  handle Symtab.DUP c => err_dup_trfun name c;
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fun merge_trtabs name tab1 tab2 = Symtab.merge SynExt.eq_trfun (tab1, tab2)
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  handle Symtab.DUP c => err_dup_trfun name c;
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(* print (ast) translations *)
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fun lookup_tr' tab c = map fst (Symtab.lookup_list tab c);
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fun update_tr'tab trfuns = fold_rev (Symtab.update_list SynExt.eq_trfun) trfuns;
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fun remove_tr'tab trfuns = fold (Symtab.remove_list SynExt.eq_trfun) trfuns;
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fun merge_tr'tabs tab1 tab2 = Symtab.merge_list SynExt.eq_trfun (tab1, tab2);
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(** tables of token translation functions **)
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fun lookup_tokentr tabs modes =
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  let val trs = distinct (eq_fst (op =)) (maps (these o AList.lookup (op =) tabs) (modes @ [""]))
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  in fn c => Option.map fst (AList.lookup (op =) trs c) end;
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fun merge_tokentrtabs tabs1 tabs2 =
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  let
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    fun eq_tr ((c1, (_, s1)), (c2, (_, s2))) = c1 = c2 andalso s1 = s2;
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    fun name (s, _) = implode (tl (Symbol.explode s));
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    fun merge mode =
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      let
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        val trs1 = these (AList.lookup (op =) tabs1 mode);
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        val trs2 = these (AList.lookup (op =) tabs2 mode);
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        val trs = distinct eq_tr (trs1 @ trs2);
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      in
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        (case duplicates (eq_fst (op =)) trs of
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          [] => (mode, trs)
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        | dups => error ("More than one token translation function in mode " ^
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            quote mode ^ " for " ^ commas_quote (map name dups)))
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      end;
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  in map merge (distinct (op =) (map fst (tabs1 @ tabs2))) end;
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fun extend_tokentrtab tokentrs tabs =
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  let
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    fun ins_tokentr (m, c, f) =
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      AList.default (op =) (m, [])
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      #> AList.map_entry (op =) m (cons ("_" ^ c, (f, stamp ())));
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  in merge_tokentrtabs tabs (fold ins_tokentr tokentrs []) end;
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(** tables of translation rules **)
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type ruletab = (Ast.ast * Ast.ast) list Symtab.table;
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fun dest_ruletab tab = maps snd (Symtab.dest tab);
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(* empty, update, merge ruletabs *)
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val update_ruletab = fold_rev (fn r => Symtab.update_list (op =) (Ast.head_of_rule r, r));
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val remove_ruletab = fold (fn r => Symtab.remove_list (op =) (Ast.head_of_rule r, r));
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fun merge_ruletabs tab1 tab2 = Symtab.merge_list (op =) (tab1, tab2);
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(** datatype syntax **)
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datatype syntax =
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  Syntax of {
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    input: SynExt.xprod list,
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    lexicon: Scan.lexicon,
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    gram: Parser.gram,
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    consts: string list,
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    prmodes: string list,
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    parse_ast_trtab: ((Proof.context -> Ast.ast list -> Ast.ast) * stamp) Symtab.table,
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    parse_ruletab: ruletab,
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    parse_trtab: ((Proof.context -> term list -> term) * stamp) Symtab.table,
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    print_trtab: ((Proof.context -> bool -> typ -> term list -> term) * stamp) list Symtab.table,
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    print_ruletab: ruletab,
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    print_ast_trtab: ((Proof.context -> Ast.ast list -> Ast.ast) * stamp) list Symtab.table,
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    tokentrtab: (string * (string * ((Proof.context -> string -> Pretty.T) * stamp)) list) list,
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    prtabs: Printer.prtabs} * stamp;
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fun eq_syntax (Syntax (_, s1), Syntax (_, s2)) = s1 = s2;
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fun is_keyword (Syntax ({lexicon, ...}, _)) = Scan.is_literal lexicon o Symbol.explode;
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type mode = string * bool;
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val mode_default = ("", true);
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val mode_input = (Print_Mode.input, true);
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(* empty_syntax *)
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val empty_syntax = Syntax
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  ({input = [],
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    lexicon = Scan.empty_lexicon,
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    gram = Parser.empty_gram,
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    consts = [],
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    prmodes = [],
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    parse_ast_trtab = Symtab.empty,
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    parse_ruletab = Symtab.empty,
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    parse_trtab = Symtab.empty,
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    print_trtab = Symtab.empty,
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    print_ruletab = Symtab.empty,
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    print_ast_trtab = Symtab.empty,
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    tokentrtab = [],
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    prtabs = Printer.empty_prtabs}, stamp ());
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(* update_syntax *)
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fun update_syntax (mode, inout) syn_ext (Syntax (tabs, _)) =
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  let
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    val {input, lexicon, gram, consts = consts1, prmodes = prmodes1,
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      parse_ast_trtab, parse_ruletab, parse_trtab, print_trtab, print_ruletab,
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      print_ast_trtab, tokentrtab, prtabs} = tabs;
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    val SynExt.SynExt {xprods, consts = consts2, prmodes = prmodes2,
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      parse_ast_translation, parse_rules, parse_translation, print_translation, print_rules,
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      print_ast_translation, token_translation} = syn_ext;
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    val new_xprods =
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      if inout then distinct (op =) (filter_out (member (op =) input) xprods) else [];
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    fun if_inout xs = if inout then xs else [];
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  in
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    Syntax
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    ({input = new_xprods @ input,
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      lexicon = fold Scan.extend_lexicon (SynExt.delims_of new_xprods) lexicon,
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      gram = Parser.extend_gram gram new_xprods,
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      consts = Library.merge (op =) (consts1, filter_out Lexicon.is_marked consts2),
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      prmodes = insert (op =) mode (Library.merge (op =) (prmodes1, prmodes2)),
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      parse_ast_trtab =
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        update_trtab "parse ast translation" (if_inout parse_ast_translation) parse_ast_trtab,
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      parse_ruletab = update_ruletab (if_inout parse_rules) parse_ruletab,
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      parse_trtab = update_trtab "parse translation" (if_inout parse_translation) parse_trtab,
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      print_trtab = update_tr'tab print_translation print_trtab,
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      print_ruletab = update_ruletab print_rules print_ruletab,
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      print_ast_trtab = update_tr'tab print_ast_translation print_ast_trtab,
wenzelm@15755
   310
      tokentrtab = extend_tokentrtab token_translation tokentrtab,
wenzelm@25394
   311
      prtabs = Printer.update_prtabs mode xprods prtabs}, stamp ())
wenzelm@18
   312
  end;
wenzelm@18
   313
wenzelm@15755
   314
wenzelm@15755
   315
(* remove_syntax *)
wenzelm@15755
   316
wenzelm@17079
   317
fun remove_syntax (mode, inout) syn_ext (Syntax (tabs, _)) =
wenzelm@15755
   318
  let
wenzelm@15755
   319
    val SynExt.SynExt {xprods, consts = _, prmodes = _,
wenzelm@15755
   320
      parse_ast_translation, parse_rules, parse_translation, print_translation, print_rules,
wenzelm@15755
   321
      print_ast_translation, token_translation = _} = syn_ext;
wenzelm@15755
   322
    val {input, lexicon, gram, consts, prmodes,
wenzelm@15755
   323
      parse_ast_trtab, parse_ruletab, parse_trtab, print_trtab, print_ruletab,
wenzelm@15755
   324
      print_ast_trtab, tokentrtab, prtabs} = tabs;
wenzelm@19300
   325
    val input' = if inout then subtract (op =) xprods input else input;
wenzelm@25394
   326
    val changed = length input <> length input';
wenzelm@19546
   327
    fun if_inout xs = if inout then xs else [];
wenzelm@15755
   328
  in
wenzelm@17079
   329
    Syntax
wenzelm@17079
   330
    ({input = input',
wenzelm@25387
   331
      lexicon = if changed then Scan.make_lexicon (SynExt.delims_of input') else lexicon,
wenzelm@25387
   332
      gram = if changed then Parser.make_gram input' else gram,
wenzelm@15755
   333
      consts = consts,
wenzelm@15755
   334
      prmodes = prmodes,
wenzelm@19546
   335
      parse_ast_trtab = remove_trtab (if_inout parse_ast_translation) parse_ast_trtab,
wenzelm@19546
   336
      parse_ruletab = remove_ruletab (if_inout parse_rules) parse_ruletab,
wenzelm@19546
   337
      parse_trtab = remove_trtab (if_inout parse_translation) parse_trtab,
wenzelm@15755
   338
      print_trtab = remove_tr'tab print_translation print_trtab,
wenzelm@15755
   339
      print_ruletab = remove_ruletab print_rules print_ruletab,
wenzelm@15755
   340
      print_ast_trtab = remove_tr'tab print_ast_translation print_ast_trtab,
wenzelm@15755
   341
      tokentrtab = tokentrtab,
wenzelm@17079
   342
      prtabs = Printer.remove_prtabs mode xprods prtabs}, stamp ())
wenzelm@15755
   343
  end;
wenzelm@14904
   344
wenzelm@18
   345
wenzelm@237
   346
(* merge_syntaxes *)
clasohm@0
   347
wenzelm@17079
   348
fun merge_syntaxes (Syntax (tabs1, _)) (Syntax (tabs2, _)) =
clasohm@0
   349
  let
wenzelm@15755
   350
    val {input = input1, lexicon = lexicon1, gram = gram1, consts = consts1,
wenzelm@15755
   351
      prmodes = prmodes1, parse_ast_trtab = parse_ast_trtab1,
wenzelm@15755
   352
      parse_ruletab = parse_ruletab1, parse_trtab = parse_trtab1,
wenzelm@15755
   353
      print_trtab = print_trtab1, print_ruletab = print_ruletab1,
wenzelm@15755
   354
      print_ast_trtab = print_ast_trtab1, tokentrtab = tokentrtab1, prtabs = prtabs1} = tabs1;
wenzelm@237
   355
wenzelm@15755
   356
    val {input = input2, lexicon = lexicon2, gram = gram2, consts = consts2,
wenzelm@15755
   357
      prmodes = prmodes2, parse_ast_trtab = parse_ast_trtab2,
wenzelm@15755
   358
      parse_ruletab = parse_ruletab2, parse_trtab = parse_trtab2,
wenzelm@15755
   359
      print_trtab = print_trtab2, print_ruletab = print_ruletab2,
wenzelm@15755
   360
      print_ast_trtab = print_ast_trtab2, tokentrtab = tokentrtab2, prtabs = prtabs2} = tabs2;
clasohm@0
   361
  in
wenzelm@17079
   362
    Syntax
wenzelm@18921
   363
    ({input = Library.merge (op =) (input1, input2),
wenzelm@27768
   364
      lexicon = Scan.merge_lexicons (lexicon1, lexicon2),
wenzelm@5692
   365
      gram = Parser.merge_grams gram1 gram2,
wenzelm@18428
   366
      consts = sort_distinct string_ord (consts1 @ consts2),
wenzelm@18921
   367
      prmodes = Library.merge (op =) (prmodes1, prmodes2),
wenzelm@237
   368
      parse_ast_trtab =
wenzelm@15755
   369
        merge_trtabs "parse ast translation" parse_ast_trtab1 parse_ast_trtab2,
wenzelm@237
   370
      parse_ruletab = merge_ruletabs parse_ruletab1 parse_ruletab2,
wenzelm@15755
   371
      parse_trtab = merge_trtabs "parse translation" parse_trtab1 parse_trtab2,
wenzelm@5692
   372
      print_trtab = merge_tr'tabs print_trtab1 print_trtab2,
wenzelm@237
   373
      print_ruletab = merge_ruletabs print_ruletab1 print_ruletab2,
wenzelm@5692
   374
      print_ast_trtab = merge_tr'tabs print_ast_trtab1 print_ast_trtab2,
wenzelm@2700
   375
      tokentrtab = merge_tokentrtabs tokentrtab1 tokentrtab2,
wenzelm@17079
   376
      prtabs = Printer.merge_prtabs prtabs1 prtabs2}, stamp ())
clasohm@0
   377
  end;
clasohm@0
   378
clasohm@0
   379
wenzelm@18720
   380
(* basic syntax *)
wenzelm@260
   381
wenzelm@35668
   382
val basic_syntax =
wenzelm@17168
   383
  empty_syntax
wenzelm@35668
   384
  |> update_syntax mode_default TypeExt.type_ext
wenzelm@25394
   385
  |> update_syntax mode_default SynExt.pure_ext;
wenzelm@260
   386
wenzelm@18720
   387
val basic_nonterms =
wenzelm@18720
   388
  (Lexicon.terminals @ [SynExt.logic, "type", "types", "sort", "classes",
wenzelm@18720
   389
    SynExt.args, SynExt.cargs, "pttrn", "pttrns", "idt", "idts", "aprop",
wenzelm@30189
   390
    "asms", SynExt.any, SynExt.sprop, "num_const", "float_const",
nipkow@28904
   391
    "index", "struct"]);
wenzelm@18720
   392
clasohm@0
   393
wenzelm@4887
   394
wenzelm@15759
   395
(** print syntax **)
wenzelm@15759
   396
wenzelm@15759
   397
local
clasohm@0
   398
wenzelm@260
   399
fun pretty_strs_qs name strs =
wenzelm@28840
   400
  Pretty.strs (name :: map quote (sort_strings strs));
clasohm@0
   401
wenzelm@17079
   402
fun pretty_gram (Syntax (tabs, _)) =
clasohm@0
   403
  let
wenzelm@32784
   404
    val {lexicon, prmodes, gram, ...} = tabs;
wenzelm@28375
   405
    val prmodes' = sort_strings (filter_out (fn s => s = "") prmodes);
clasohm@0
   406
  in
wenzelm@8720
   407
    [pretty_strs_qs "lexicon:" (Scan.dest_lexicon lexicon),
wenzelm@8720
   408
      Pretty.big_list "prods:" (Parser.pretty_gram gram),
wenzelm@8720
   409
      pretty_strs_qs "print modes:" prmodes']
clasohm@0
   410
  end;
clasohm@0
   411
wenzelm@17079
   412
fun pretty_trans (Syntax (tabs, _)) =
clasohm@0
   413
  let
wenzelm@260
   414
    fun pretty_trtab name tab =
wenzelm@5692
   415
      pretty_strs_qs name (Symtab.keys tab);
clasohm@0
   416
wenzelm@260
   417
    fun pretty_ruletab name tab =
wenzelm@5692
   418
      Pretty.big_list name (map Ast.pretty_rule (dest_ruletab tab));
clasohm@0
   419
wenzelm@28840
   420
    fun pretty_tokentr (mode, trs) = Pretty.strs (quote mode ^ ":" :: map fst trs);
wenzelm@4703
   421
wenzelm@237
   422
    val {consts, parse_ast_trtab, parse_ruletab, parse_trtab, print_trtab,
wenzelm@4703
   423
      print_ruletab, print_ast_trtab, tokentrtab, ...} = tabs;
clasohm@0
   424
  in
wenzelm@8720
   425
    [pretty_strs_qs "consts:" consts,
wenzelm@8720
   426
      pretty_trtab "parse_ast_translation:" parse_ast_trtab,
wenzelm@8720
   427
      pretty_ruletab "parse_rules:" parse_ruletab,
wenzelm@8720
   428
      pretty_trtab "parse_translation:" parse_trtab,
wenzelm@8720
   429
      pretty_trtab "print_translation:" print_trtab,
wenzelm@8720
   430
      pretty_ruletab "print_rules:" print_ruletab,
wenzelm@8720
   431
      pretty_trtab "print_ast_translation:" print_ast_trtab,
wenzelm@8720
   432
      Pretty.big_list "token_translation:" (map pretty_tokentr tokentrtab)]
clasohm@0
   433
  end;
clasohm@0
   434
wenzelm@15759
   435
in
clasohm@0
   436
wenzelm@15759
   437
fun print_gram syn = Pretty.writeln (Pretty.chunks (pretty_gram syn));
wenzelm@15759
   438
fun print_trans syn = Pretty.writeln (Pretty.chunks (pretty_trans syn));
wenzelm@15759
   439
fun print_syntax syn = Pretty.writeln (Pretty.chunks (pretty_gram syn @ pretty_trans syn));
clasohm@0
   440
wenzelm@15759
   441
end;
clasohm@0
   442
clasohm@0
   443
wenzelm@26951
   444
(* reconstructing infixes -- educated guessing *)
wenzelm@26951
   445
wenzelm@26951
   446
fun guess_infix (Syntax ({gram, ...}, _)) c =
wenzelm@26951
   447
  (case Parser.guess_infix_lr gram c of
wenzelm@26951
   448
    SOME (s, l, r, j) => SOME
wenzelm@35130
   449
     (if l then Mixfix.Infixl (s, j)
wenzelm@35130
   450
      else if r then Mixfix.Infixr (s, j)
wenzelm@35130
   451
      else Mixfix.Infix (s, j))
wenzelm@26951
   452
  | NONE => NONE);
wenzelm@26951
   453
wenzelm@26951
   454
clasohm@0
   455
wenzelm@237
   456
(** read **)
wenzelm@18
   457
wenzelm@27786
   458
(* read token -- with optional YXML encoding of position *)
wenzelm@27786
   459
wenzelm@27786
   460
fun read_token str =
wenzelm@27786
   461
  let val (text, pos) =
wenzelm@27803
   462
    (case YXML.parse str handle Fail msg => error msg of
wenzelm@27803
   463
      XML.Elem ("token", props, [XML.Text text]) => (text, Position.of_properties props)
wenzelm@27803
   464
    | XML.Elem ("token", props, []) => ("", Position.of_properties props)
wenzelm@27803
   465
    | XML.Text text => (text, Position.none)
wenzelm@27803
   466
    | _ => (str, Position.none))
wenzelm@30573
   467
  in (Symbol_Pos.explode (text, pos), pos) end;
wenzelm@27786
   468
wenzelm@27786
   469
wenzelm@260
   470
(* read_ast *)
wenzelm@260
   471
wenzelm@32738
   472
val ambiguity_is_error = Unsynchronized.ref false;
wenzelm@32738
   473
val ambiguity_level = Unsynchronized.ref 1;
wenzelm@32738
   474
val ambiguity_limit = Unsynchronized.ref 10;
clasohm@882
   475
wenzelm@27786
   476
fun ambiguity_msg pos = "Parse error: ambiguous syntax" ^ Position.str_of pos;
wenzelm@27786
   477
wenzelm@27786
   478
fun read_asts ctxt is_logtype (Syntax (tabs, _)) xids root (syms, pos) =
wenzelm@260
   479
  let
wenzelm@14904
   480
    val {lexicon, gram, parse_ast_trtab, ...} = tabs;
wenzelm@27889
   481
    val toks = Lexicon.tokenize lexicon xids syms;
wenzelm@28413
   482
    val _ = List.app Lexicon.report_token toks;
wenzelm@27889
   483
wenzelm@14904
   484
    val root' = if root <> "prop" andalso is_logtype root then SynExt.logic else root;
wenzelm@27889
   485
    val pts = Parser.parse gram root' (filter Lexicon.is_proper toks);
wenzelm@25993
   486
    val len = length pts;
clasohm@330
   487
wenzelm@25993
   488
    val limit = ! ambiguity_limit;
wenzelm@12292
   489
    fun show_pt pt =
wenzelm@21772
   490
      Pretty.string_of (Ast.pretty_ast (hd (SynTrans.pts_to_asts ctxt (K NONE) [pt])));
wenzelm@260
   491
  in
wenzelm@25993
   492
    if len <= ! ambiguity_level then ()
wenzelm@27786
   493
    else if ! ambiguity_is_error then error (ambiguity_msg pos)
wenzelm@25993
   494
    else
wenzelm@25993
   495
      (warning (cat_lines
wenzelm@33919
   496
        (("Ambiguous input" ^ Position.str_of pos ^
wenzelm@27786
   497
          "\nproduces " ^ string_of_int len ^ " parse trees" ^
wenzelm@25993
   498
          (if len <= limit then "" else " (" ^ string_of_int limit ^ " displayed)") ^ ":") ::
haftmann@33957
   499
          map show_pt (take limit pts))));
wenzelm@21772
   500
    SynTrans.pts_to_asts ctxt (lookup_tr parse_ast_trtab) pts
wenzelm@260
   501
  end;
wenzelm@260
   502
wenzelm@260
   503
wenzelm@237
   504
(* read *)
clasohm@0
   505
wenzelm@27786
   506
fun read ctxt is_logtype (syn as Syntax (tabs, _)) ty inp =
clasohm@0
   507
  let
wenzelm@237
   508
    val {parse_ruletab, parse_trtab, ...} = tabs;
wenzelm@27786
   509
    val asts = read_asts ctxt is_logtype syn false (SynExt.typ_to_nonterm ty) inp;
clasohm@0
   510
  in
wenzelm@21772
   511
    SynTrans.asts_to_terms ctxt (lookup_tr parse_trtab)
wenzelm@18931
   512
      (map (Ast.normalize_ast (Symtab.lookup_list parse_ruletab)) asts)
clasohm@0
   513
  end;
clasohm@0
   514
clasohm@0
   515
wenzelm@22703
   516
(* read terms *)
wenzelm@22703
   517
wenzelm@24372
   518
(*brute-force disambiguation via type-inference*)
wenzelm@24372
   519
fun disambig _ _ [t] = t
wenzelm@24372
   520
  | disambig pp check ts =
wenzelm@24372
   521
      let
wenzelm@25993
   522
        val level = ! ambiguity_level;
wenzelm@25993
   523
        val limit = ! ambiguity_limit;
wenzelm@24372
   524
wenzelm@24372
   525
        val ambiguity = length ts;
wenzelm@24372
   526
        fun ambig_msg () =
wenzelm@25993
   527
          if ambiguity > 1 andalso ambiguity <= level then
wenzelm@24372
   528
            "Got more than one parse tree.\n\
wenzelm@25993
   529
            \Retry with smaller Syntax.ambiguity_level for more information."
wenzelm@24372
   530
          else "";
wenzelm@25993
   531
wenzelm@35394
   532
        val errs = Par_List.map check ts;
wenzelm@25993
   533
        val results = map_filter (fn (t, NONE) => SOME t | _ => NONE) (ts ~~ errs);
wenzelm@25993
   534
        val len = length results;
wenzelm@24372
   535
      in
wenzelm@25476
   536
        if null results then cat_error (ambig_msg ()) (cat_lines (map_filter I errs))
wenzelm@25993
   537
        else if len = 1 then
wenzelm@25993
   538
          (if ambiguity > level then
wenzelm@24372
   539
            warning "Fortunately, only one parse tree is type correct.\n\
wenzelm@24372
   540
              \You may still want to disambiguate your grammar or your input."
wenzelm@24372
   541
          else (); hd results)
wenzelm@25993
   542
        else cat_error (ambig_msg ()) (cat_lines
wenzelm@25993
   543
          (("Ambiguous input, " ^ string_of_int len ^ " terms are type correct" ^
wenzelm@25993
   544
            (if len <= limit then "" else " (" ^ string_of_int limit ^ " displayed)") ^ ":") ::
haftmann@33957
   545
            map (Pretty.string_of_term pp) (take limit results)))
wenzelm@24372
   546
      end;
wenzelm@24372
   547
wenzelm@35429
   548
fun standard_parse_term pp check get_sort map_const map_free ctxt is_logtype syn ty (syms, pos) =
wenzelm@27786
   549
  read ctxt is_logtype syn ty (syms, pos)
wenzelm@35429
   550
  |> map (TypeExt.decode_term get_sort map_const map_free)
wenzelm@24372
   551
  |> disambig (Printer.pp_show_brackets pp) check;
wenzelm@22703
   552
wenzelm@22703
   553
wenzelm@237
   554
(* read types *)
clasohm@0
   555
wenzelm@35429
   556
fun standard_parse_typ ctxt syn get_sort (syms, pos) =
wenzelm@27786
   557
  (case read ctxt (K false) syn SynExt.typeT (syms, pos) of
wenzelm@35429
   558
    [t] => TypeExt.typ_of_term (get_sort (TypeExt.term_sorts t)) t
wenzelm@27786
   559
  | _ => error (ambiguity_msg pos));
wenzelm@144
   560
wenzelm@144
   561
wenzelm@8894
   562
(* read sorts *)
wenzelm@8894
   563
wenzelm@35429
   564
fun standard_parse_sort ctxt syn (syms, pos) =
wenzelm@27786
   565
  (case read ctxt (K false) syn TypeExt.sortT (syms, pos) of
wenzelm@35429
   566
    [t] => TypeExt.sort_of_term t
wenzelm@27786
   567
  | _ => error (ambiguity_msg pos));
wenzelm@8894
   568
wenzelm@8894
   569
wenzelm@18
   570
wenzelm@1158
   571
(** prepare translation rules **)
wenzelm@1158
   572
wenzelm@1158
   573
datatype 'a trrule =
wenzelm@3526
   574
  ParseRule of 'a * 'a |
wenzelm@3526
   575
  PrintRule of 'a * 'a |
wenzelm@3526
   576
  ParsePrintRule of 'a * 'a;
wenzelm@888
   577
wenzelm@4618
   578
fun map_trrule f (ParseRule (x, y)) = ParseRule (f x, f y)
wenzelm@4618
   579
  | map_trrule f (PrintRule (x, y)) = PrintRule (f x, f y)
wenzelm@4618
   580
  | map_trrule f (ParsePrintRule (x, y)) = ParsePrintRule (f x, f y);
wenzelm@1158
   581
skalberg@15531
   582
fun parse_rule (ParseRule pats) = SOME pats
skalberg@15531
   583
  | parse_rule (PrintRule _) = NONE
skalberg@15531
   584
  | parse_rule (ParsePrintRule pats) = SOME pats;
wenzelm@1158
   585
skalberg@15531
   586
fun print_rule (ParseRule _) = NONE
skalberg@15531
   587
  | print_rule (PrintRule pats) = SOME (swap pats)
skalberg@15531
   588
  | print_rule (ParsePrintRule pats) = SOME (swap pats);
wenzelm@1158
   589
wenzelm@1158
   590
wenzelm@35111
   591
fun is_const (Syntax ({consts, ...}, _)) c = member (op =) consts c;
wenzelm@35111
   592
wenzelm@19262
   593
local
wenzelm@19262
   594
wenzelm@1158
   595
fun check_rule (rule as (lhs, rhs)) =
wenzelm@5692
   596
  (case Ast.rule_error rule of
skalberg@15531
   597
    SOME msg =>
wenzelm@1158
   598
      error ("Error in syntax translation rule: " ^ msg ^ "\n" ^
wenzelm@5692
   599
        Ast.str_of_ast lhs ^ "  ->  " ^ Ast.str_of_ast rhs)
skalberg@15531
   600
  | NONE => rule);
wenzelm@888
   601
wenzelm@21772
   602
fun read_pattern ctxt is_logtype syn (root, str) =
wenzelm@18
   603
  let
wenzelm@5692
   604
    fun constify (ast as Ast.Constant _) = ast
wenzelm@5692
   605
      | constify (ast as Ast.Variable x) =
wenzelm@35111
   606
          if is_const syn x orelse Long_Name.is_qualified x then Ast.Constant x
wenzelm@3830
   607
          else ast
wenzelm@5692
   608
      | constify (Ast.Appl asts) = Ast.Appl (map constify asts);
wenzelm@27786
   609
wenzelm@27786
   610
    val (syms, pos) = read_token str;
wenzelm@18
   611
  in
wenzelm@27786
   612
    (case read_asts ctxt is_logtype syn true root (syms, pos) of
wenzelm@888
   613
      [ast] => constify ast
wenzelm@27786
   614
    | _ => error (ambiguity_msg pos))
wenzelm@27786
   615
  end;
clasohm@0
   616
wenzelm@1158
   617
fun prep_rules rd_pat raw_rules =
wenzelm@4618
   618
  let val rules = map (map_trrule rd_pat) raw_rules in
wenzelm@19482
   619
    (map check_rule (map_filter parse_rule rules),
wenzelm@19482
   620
      map check_rule (map_filter print_rule rules))
wenzelm@1158
   621
  end
wenzelm@18
   622
wenzelm@19262
   623
in
wenzelm@19262
   624
wenzelm@19262
   625
val cert_rules = prep_rules I;
wenzelm@19262
   626
wenzelm@21772
   627
fun read_rules ctxt is_logtype syn =
wenzelm@21772
   628
  prep_rules (read_pattern ctxt is_logtype syn);
wenzelm@19262
   629
wenzelm@19262
   630
end;
wenzelm@19262
   631
wenzelm@18
   632
wenzelm@18
   633
wenzelm@24923
   634
(** unparse terms, typs, sorts **)
wenzelm@18
   635
wenzelm@24923
   636
local
wenzelm@24923
   637
wenzelm@32784
   638
fun unparse_t t_to_ast prt_t markup ctxt (Syntax (tabs, _)) curried t =
clasohm@0
   639
  let
wenzelm@35429
   640
    val {consts, print_trtab, print_ruletab, print_ast_trtab, tokentrtab, prtabs, ...} = tabs;
wenzelm@35429
   641
    val ast = t_to_ast consts ctxt (lookup_tr' print_trtab) t;
clasohm@0
   642
  in
wenzelm@23631
   643
    Pretty.markup markup (prt_t ctxt curried prtabs (lookup_tr' print_ast_trtab)
wenzelm@24613
   644
      (lookup_tokentr tokentrtab (print_mode_value ()))
wenzelm@23631
   645
      (Ast.normalize_ast (Symtab.lookup_list print_ruletab) ast))
clasohm@0
   646
  end;
clasohm@0
   647
wenzelm@24923
   648
in
wenzelm@24923
   649
wenzelm@35429
   650
fun standard_unparse_term idents extern =
wenzelm@35429
   651
  unparse_t (Printer.term_to_ast idents) (Printer.pretty_term_ast extern) Markup.term;
wenzelm@24923
   652
wenzelm@35429
   653
fun standard_unparse_typ extern ctxt syn =
wenzelm@35429
   654
  unparse_t (K Printer.typ_to_ast) (Printer.pretty_typ_ast extern) Markup.typ ctxt syn false;
wenzelm@24923
   655
wenzelm@35429
   656
fun standard_unparse_sort {extern_class} ctxt syn =
wenzelm@35429
   657
  unparse_t (K Printer.sort_to_ast)
wenzelm@35429
   658
    (Printer.pretty_typ_ast {extern_class = extern_class, extern_type = I})
wenzelm@35429
   659
    Markup.sort ctxt syn false;
wenzelm@24923
   660
wenzelm@24923
   661
end;
clasohm@0
   662
clasohm@0
   663
clasohm@0
   664
wenzelm@19262
   665
(** modify syntax **)
wenzelm@383
   666
wenzelm@25394
   667
fun ext_syntax f decls = update_syntax mode_default (f decls);
wenzelm@383
   668
wenzelm@35412
   669
val update_trfuns = ext_syntax SynExt.syn_ext_trfuns;
wenzelm@25394
   670
val update_advanced_trfuns = ext_syntax SynExt.syn_ext_advanced_trfuns;
wenzelm@35412
   671
val extend_tokentrfuns = ext_syntax SynExt.syn_ext_tokentrfuns;
wenzelm@5692
   672
wenzelm@35412
   673
fun update_type_gram add prmode decls =
wenzelm@35412
   674
  (if add then update_syntax else remove_syntax) prmode (Mixfix.syn_ext_types decls);
wenzelm@25387
   675
wenzelm@35412
   676
fun update_const_gram add is_logtype prmode decls =
wenzelm@35412
   677
  (if add then update_syntax else remove_syntax) prmode (Mixfix.syn_ext_consts is_logtype decls);
wenzelm@15755
   678
wenzelm@25394
   679
fun update_trrules ctxt is_logtype syn =
wenzelm@21772
   680
  ext_syntax SynExt.syn_ext_rules o read_rules ctxt is_logtype syn;
wenzelm@19262
   681
wenzelm@21772
   682
fun remove_trrules ctxt is_logtype syn =
wenzelm@24970
   683
  remove_syntax mode_default o SynExt.syn_ext_rules o read_rules ctxt is_logtype syn;
wenzelm@19262
   684
wenzelm@25394
   685
val update_trrules_i = ext_syntax SynExt.syn_ext_rules o cert_rules;
wenzelm@24970
   686
val remove_trrules_i = remove_syntax mode_default o SynExt.syn_ext_rules o cert_rules;
wenzelm@5692
   687
wenzelm@5692
   688
wenzelm@24263
   689
wenzelm@24768
   690
(** inner syntax operations **)
wenzelm@24263
   691
wenzelm@24768
   692
(* (un)parsing *)
wenzelm@24263
   693
wenzelm@28413
   694
fun parse_token markup str =
wenzelm@27822
   695
  let
wenzelm@27822
   696
    val (syms, pos) = read_token str;
wenzelm@28413
   697
    val _ = Position.report markup pos;
wenzelm@27822
   698
  in (syms, pos) end;
wenzelm@27822
   699
wenzelm@24263
   700
local
wenzelm@24768
   701
wenzelm@36739
   702
type operations =
wenzelm@36739
   703
 {parse_sort: Proof.context -> string -> sort,
wenzelm@36739
   704
  parse_typ: Proof.context -> string -> typ,
wenzelm@36739
   705
  parse_term: Proof.context -> string -> term,
wenzelm@36739
   706
  parse_prop: Proof.context -> string -> term,
wenzelm@36739
   707
  unparse_sort: Proof.context -> sort -> Pretty.T,
wenzelm@36739
   708
  unparse_typ: Proof.context -> typ -> Pretty.T,
wenzelm@36739
   709
  unparse_term: Proof.context -> term -> Pretty.T};
wenzelm@24768
   710
wenzelm@36739
   711
val operations: operations Single_Assignment.var = Single_Assignment.var "Syntax.operations";
wenzelm@36739
   712
wenzelm@36739
   713
fun operation which ctxt x =
wenzelm@36739
   714
  (case Single_Assignment.peek operations of
wenzelm@36739
   715
    NONE => raise Fail "Inner syntax operations not installed"
wenzelm@36739
   716
  | SOME ops => which ops ctxt x);
wenzelm@36739
   717
wenzelm@24263
   718
in
wenzelm@24263
   719
wenzelm@24768
   720
val parse_sort = operation #parse_sort;
wenzelm@24768
   721
val parse_typ = operation #parse_typ;
wenzelm@24768
   722
val parse_term = operation #parse_term;
wenzelm@24768
   723
val parse_prop = operation #parse_prop;
wenzelm@24768
   724
val unparse_sort = operation #unparse_sort;
wenzelm@24768
   725
val unparse_typ = operation #unparse_typ;
wenzelm@24768
   726
val unparse_term = operation #unparse_term;
wenzelm@24768
   727
wenzelm@36739
   728
fun install_operations ops = Single_Assignment.assign operations ops;
wenzelm@24768
   729
wenzelm@24263
   730
end;
wenzelm@24263
   731
wenzelm@24263
   732
wenzelm@24768
   733
(* context-sensitive (un)checking *)
wenzelm@24263
   734
wenzelm@24488
   735
local
wenzelm@24488
   736
wenzelm@24768
   737
type key = int * bool;
wenzelm@25060
   738
type 'a check = 'a list -> Proof.context -> ('a list * Proof.context) option;
wenzelm@24768
   739
wenzelm@33519
   740
structure Checks = Generic_Data
wenzelm@24263
   741
(
wenzelm@24488
   742
  type T =
wenzelm@24768
   743
    ((key * ((string * typ check) * stamp) list) list *
wenzelm@24768
   744
     (key * ((string * term check) * stamp) list) list);
wenzelm@24488
   745
  val empty = ([], []);
wenzelm@24263
   746
  val extend = I;
wenzelm@33519
   747
  fun merge ((typ_checks1, term_checks1), (typ_checks2, term_checks2)) : T =
wenzelm@24768
   748
    (AList.join (op =) (K (Library.merge (eq_snd (op =)))) (typ_checks1, typ_checks2),
wenzelm@24768
   749
     AList.join (op =) (K (Library.merge (eq_snd (op =)))) (term_checks1, term_checks2));
wenzelm@24263
   750
);
wenzelm@24263
   751
wenzelm@24768
   752
fun gen_add which (key: key) name f =
wenzelm@24768
   753
  Checks.map (which (AList.map_default op = (key, []) (cons ((name, f), stamp ()))));
wenzelm@24768
   754
wenzelm@25060
   755
fun check_stage fs = perhaps_loop (perhaps_apply (map uncurry fs));
wenzelm@25060
   756
wenzelm@25060
   757
fun gen_check which uncheck ctxt0 xs0 =
wenzelm@24263
   758
  let
wenzelm@24768
   759
    val funs = which (Checks.get (Context.Proof ctxt0))
wenzelm@24768
   760
      |> map_filter (fn ((i, u), fs) => if uncheck = u then SOME (i, map (snd o fst) fs) else NONE)
wenzelm@25060
   761
      |> Library.sort (int_ord o pairself fst) |> map snd
wenzelm@25060
   762
      |> not uncheck ? map rev;
wenzelm@25060
   763
    val check_all = perhaps_apply (map check_stage funs);
wenzelm@25060
   764
  in #1 (perhaps check_all (xs0, ctxt0)) end;
wenzelm@24768
   765
wenzelm@24768
   766
fun map_sort f S =
wenzelm@24768
   767
  (case f (TFree ("", S)) of
wenzelm@24768
   768
    TFree ("", S') => S'
wenzelm@24923
   769
  | _ => raise TYPE ("map_sort", [TFree ("", S)], []));
wenzelm@24488
   770
wenzelm@24488
   771
in
wenzelm@24263
   772
wenzelm@24768
   773
fun print_checks ctxt =
wenzelm@24768
   774
  let
wenzelm@24768
   775
    fun split_checks checks =
wenzelm@24768
   776
      List.partition (fn ((_, un), _) => not un) checks
wenzelm@24768
   777
      |> pairself (map (fn ((i, _), fs) => (i, map (fst o fst) fs))
wenzelm@24768
   778
          #> sort (int_ord o pairself fst));
wenzelm@24768
   779
    fun pretty_checks kind checks =
wenzelm@24768
   780
      checks |> map (fn (i, names) => Pretty.block
wenzelm@24768
   781
        [Pretty.str (kind ^ " (stage " ^ signed_string_of_int i ^ "):"),
wenzelm@24768
   782
          Pretty.brk 1, Pretty.strs names]);
wenzelm@24768
   783
wenzelm@24768
   784
    val (typs, terms) = Checks.get (Context.Proof ctxt);
wenzelm@24768
   785
    val (typ_checks, typ_unchecks) = split_checks typs;
wenzelm@24768
   786
    val (term_checks, term_unchecks) = split_checks terms;
wenzelm@24768
   787
  in
wenzelm@24768
   788
    pretty_checks "typ_checks" typ_checks @
wenzelm@24768
   789
    pretty_checks "term_checks" term_checks @
wenzelm@24768
   790
    pretty_checks "typ_unchecks" typ_unchecks @
wenzelm@24768
   791
    pretty_checks "term_unchecks" term_unchecks
wenzelm@24768
   792
  end |> Pretty.chunks |> Pretty.writeln;
wenzelm@24768
   793
wenzelm@24768
   794
fun add_typ_check stage = gen_add apfst (stage, false);
wenzelm@24768
   795
fun add_term_check stage = gen_add apsnd (stage, false);
wenzelm@24768
   796
fun add_typ_uncheck stage = gen_add apfst (stage, true);
wenzelm@24768
   797
fun add_term_uncheck stage = gen_add apsnd (stage, true);
wenzelm@24768
   798
wenzelm@25060
   799
val check_typs = gen_check fst false;
wenzelm@25060
   800
val check_terms = gen_check snd false;
wenzelm@27265
   801
fun check_props ctxt = map (TypeExt.type_constraint propT) #> check_terms ctxt;
wenzelm@24488
   802
wenzelm@24512
   803
val check_typ = singleton o check_typs;
wenzelm@24512
   804
val check_term = singleton o check_terms;
wenzelm@24512
   805
val check_prop = singleton o check_props;
wenzelm@24768
   806
val check_sort = map_sort o check_typ;
wenzelm@24263
   807
wenzelm@25060
   808
val uncheck_typs = gen_check fst true;
wenzelm@25060
   809
val uncheck_terms = gen_check snd true;
wenzelm@24768
   810
val uncheck_sort = map_sort o singleton o uncheck_typs;
wenzelm@24488
   811
wenzelm@24488
   812
end;
wenzelm@24488
   813
wenzelm@24263
   814
wenzelm@24923
   815
(* derived operations for classrel and arity *)
wenzelm@24923
   816
wenzelm@24923
   817
val uncheck_classrel = map o singleton o uncheck_sort;
wenzelm@24923
   818
wenzelm@24923
   819
fun unparse_classrel ctxt cs = Pretty.block (flat
wenzelm@24923
   820
  (separate [Pretty.str " <", Pretty.brk 1] (map (single o unparse_sort ctxt o single) cs)));
wenzelm@24923
   821
wenzelm@24923
   822
fun uncheck_arity ctxt (a, Ss, S) =
wenzelm@24923
   823
  let
wenzelm@24923
   824
    val T = Type (a, replicate (length Ss) dummyT);
wenzelm@24923
   825
    val a' =
wenzelm@24923
   826
      (case singleton (uncheck_typs ctxt) T of
wenzelm@24923
   827
        Type (a', _) => a'
wenzelm@24923
   828
      | T => raise TYPE ("uncheck_arity", [T], []));
wenzelm@24923
   829
    val Ss' = map (uncheck_sort ctxt) Ss;
wenzelm@24923
   830
    val S' = uncheck_sort ctxt S;
wenzelm@24923
   831
  in (a', Ss', S') end;
wenzelm@24923
   832
wenzelm@24923
   833
fun unparse_arity ctxt (a, Ss, S) =
wenzelm@24923
   834
  let
wenzelm@25043
   835
    val prtT = unparse_typ ctxt (Type (a, []));
wenzelm@24923
   836
    val dom =
wenzelm@24923
   837
      if null Ss then []
wenzelm@24923
   838
      else [Pretty.list "(" ")" (map (unparse_sort ctxt) Ss), Pretty.brk 1];
wenzelm@25043
   839
  in Pretty.block ([prtT, Pretty.str " ::", Pretty.brk 1] @ dom @ [unparse_sort ctxt S]) end;
wenzelm@24923
   840
wenzelm@24923
   841
wenzelm@24923
   842
(* read = parse + check *)
wenzelm@24263
   843
wenzelm@24263
   844
fun read_sort ctxt = parse_sort ctxt #> check_sort ctxt;
wenzelm@24263
   845
fun read_typ ctxt = parse_typ ctxt #> singleton (check_typs ctxt);
wenzelm@24263
   846
wenzelm@24263
   847
fun read_terms ctxt = map (parse_term ctxt) #> check_terms ctxt;
wenzelm@24263
   848
fun read_props ctxt = map (parse_prop ctxt) #> check_props ctxt;
wenzelm@24263
   849
wenzelm@24263
   850
val read_term = singleton o read_terms;
wenzelm@24263
   851
val read_prop = singleton o read_props;
wenzelm@24263
   852
wenzelm@36610
   853
val read_sort_global = read_sort o ProofContext.init_global;
wenzelm@36610
   854
val read_typ_global = read_typ o ProofContext.init_global;
wenzelm@36610
   855
val read_term_global = read_term o ProofContext.init_global;
wenzelm@36610
   856
val read_prop_global = read_prop o ProofContext.init_global;
wenzelm@24278
   857
wenzelm@24263
   858
wenzelm@24923
   859
(* pretty = uncheck + unparse *)
wenzelm@24923
   860
wenzelm@26951
   861
fun pretty_term ctxt = singleton (uncheck_terms ctxt) #> unparse_term ctxt;
wenzelm@26951
   862
fun pretty_typ ctxt = singleton (uncheck_typs ctxt) #> unparse_typ ctxt;
wenzelm@24923
   863
fun pretty_sort ctxt = uncheck_sort ctxt #> unparse_sort ctxt;
wenzelm@24923
   864
fun pretty_classrel ctxt = uncheck_classrel ctxt #> unparse_classrel ctxt;
wenzelm@24923
   865
fun pretty_arity ctxt = uncheck_arity ctxt #> unparse_arity ctxt;
wenzelm@24923
   866
wenzelm@26951
   867
val string_of_term = Pretty.string_of oo pretty_term;
wenzelm@26951
   868
val string_of_typ = Pretty.string_of oo pretty_typ;
wenzelm@24923
   869
val string_of_sort = Pretty.string_of oo pretty_sort;
wenzelm@24923
   870
val string_of_classrel = Pretty.string_of oo pretty_classrel;
wenzelm@24923
   871
val string_of_arity = Pretty.string_of oo pretty_arity;
wenzelm@26951
   872
wenzelm@26951
   873
wenzelm@26951
   874
(* global pretty printing *)
wenzelm@26951
   875
wenzelm@33519
   876
structure PrettyGlobal = Proof_Data(type T = bool fun init _ = false);
wenzelm@26951
   877
val is_pretty_global = PrettyGlobal.get;
wenzelm@26951
   878
val set_pretty_global = PrettyGlobal.put;
wenzelm@36610
   879
val init_pretty_global = set_pretty_global true o ProofContext.init_global;
wenzelm@24923
   880
wenzelm@26951
   881
val pretty_term_global = pretty_term o init_pretty_global;
wenzelm@26951
   882
val pretty_typ_global = pretty_typ o init_pretty_global;
wenzelm@26951
   883
val pretty_sort_global = pretty_sort o init_pretty_global;
wenzelm@26951
   884
wenzelm@26951
   885
val string_of_term_global = string_of_term o init_pretty_global;
wenzelm@26951
   886
val string_of_typ_global = string_of_typ o init_pretty_global;
wenzelm@26951
   887
val string_of_sort_global = string_of_sort o init_pretty_global;
wenzelm@26951
   888
wenzelm@26951
   889
wenzelm@26951
   890
(* pp operations -- deferred evaluation *)
wenzelm@26951
   891
wenzelm@24970
   892
fun pp ctxt = Pretty.pp
wenzelm@24970
   893
 (fn x => pretty_term ctxt x,
wenzelm@24970
   894
  fn x => pretty_typ ctxt x,
wenzelm@24970
   895
  fn x => pretty_sort ctxt x,
wenzelm@24970
   896
  fn x => pretty_classrel ctxt x,
wenzelm@24970
   897
  fn x => pretty_arity ctxt x);
wenzelm@24923
   898
wenzelm@26951
   899
fun pp_global thy = Pretty.pp
wenzelm@26951
   900
 (fn x => pretty_term_global thy x,
wenzelm@26951
   901
  fn x => pretty_typ_global thy x,
wenzelm@26951
   902
  fn x => pretty_sort_global thy x,
wenzelm@26951
   903
  fn x => pretty_classrel (init_pretty_global thy) x,
wenzelm@26951
   904
  fn x => pretty_arity (init_pretty_global thy) x);
wenzelm@26951
   905
haftmann@26678
   906
wenzelm@15833
   907
(*export parts of internal Syntax structures*)
wenzelm@15833
   908
open Lexicon SynExt Ast Parser TypeExt SynTrans Mixfix Printer;
wenzelm@2366
   909
clasohm@0
   910
end;
wenzelm@5692
   911
wenzelm@35130
   912
structure Basic_Syntax: BASIC_SYNTAX = Syntax;
wenzelm@35130
   913
open Basic_Syntax;
wenzelm@23923
   914
wenzelm@26684
   915
forget_structure "Ast";
wenzelm@26684
   916
forget_structure "SynExt";
wenzelm@26684
   917
forget_structure "Parser";
wenzelm@26684
   918
forget_structure "TypeExt";
wenzelm@26684
   919
forget_structure "SynTrans";
wenzelm@26684
   920
forget_structure "Mixfix";
wenzelm@26684
   921
forget_structure "Printer";