src/Pure/sign.ML
author haftmann
Tue Aug 09 10:03:30 2005 +0200 (2005-08-09)
changeset 17037 bd15f69bd947
parent 16988 02cd0c8b96d9
child 17039 78159411623f
permissions -rw-r--r--
added 'the_const_constraint'
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(*  Title:      Pure/sign.ML
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    ID:         $Id$
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    Author:     Lawrence C Paulson and Markus Wenzel
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Logical signature content: naming conventions, concrete syntax, type
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signature, constant declarations.
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*)
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signature SIGN_THEORY =
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sig
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  val add_defsort: string -> theory -> theory
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  val add_defsort_i: sort -> theory -> theory
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  val add_types: (bstring * int * mixfix) list -> theory -> theory
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  val add_typedecls: (bstring * string list * mixfix) list -> theory -> theory
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  val add_nonterminals: bstring list -> theory -> theory
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  val add_tyabbrs: (bstring * string list * string * mixfix) list -> theory -> theory
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  val add_tyabbrs_i: (bstring * string list * typ * mixfix) list -> theory -> theory
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  val add_arities: (xstring * string list * string) list -> theory -> theory
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  val add_arities_i: (string * sort list * sort) list -> theory -> theory
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  val add_syntax: (bstring * string * mixfix) list -> theory -> theory
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  val add_syntax_i: (bstring * typ * mixfix) list -> theory -> theory
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  val add_modesyntax: (string * bool) -> (bstring * string * mixfix) list -> theory -> theory
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  val add_modesyntax_i: (string * bool) -> (bstring * typ * mixfix) list -> theory -> theory
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  val del_modesyntax: (string * bool) -> (bstring * string * mixfix) list -> theory -> theory
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  val del_modesyntax_i: (string * bool) -> (bstring * typ * mixfix) list -> theory -> theory
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  val add_consts: (bstring * string * mixfix) list -> theory -> theory
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  val add_consts_i: (bstring * typ * mixfix) list -> theory -> theory
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  val add_const_constraint: xstring * string -> theory -> theory
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  val add_const_constraint_i: string * typ -> theory -> theory
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  val add_classes: (bstring * xstring list) list -> theory -> theory
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  val add_classes_i: (bstring * class list) list -> theory -> theory
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  val add_classrel: (xstring * xstring) list -> theory -> theory
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  val add_classrel_i: (class * class) list -> theory -> theory
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  val add_trfuns:
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    (string * (ast list -> ast)) list *
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    (string * (term list -> term)) list *
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    (string * (term list -> term)) list *
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    (string * (ast list -> ast)) list -> theory -> theory
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  val add_trfunsT:
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    (string * (bool -> typ -> term list -> term)) list -> theory -> theory
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  val add_advanced_trfuns:
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    (string * (theory -> ast list -> ast)) list *
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    (string * (theory -> term list -> term)) list *
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    (string * (theory -> term list -> term)) list *
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    (string * (theory -> ast list -> ast)) list -> theory -> theory
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  val add_advanced_trfunsT:
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    (string * (theory -> bool -> typ -> term list -> term)) list -> theory -> theory
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  val add_tokentrfuns:
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    (string * string * (string -> string * real)) list -> theory -> theory
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  val add_mode_tokentrfuns: string -> (string * (string -> string * real)) list
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    -> theory -> theory
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  val add_trrules: (xstring * string) Syntax.trrule list -> theory -> theory
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  val add_trrules_i: ast Syntax.trrule list -> theory -> theory
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  val add_path: string -> theory -> theory
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  val parent_path: theory -> theory
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  val root_path: theory -> theory
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  val absolute_path: theory -> theory
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  val local_path: theory -> theory
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  val qualified_names: theory -> theory
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  val no_base_names: theory -> theory
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  val custom_accesses: (string list -> string list list) -> theory -> theory
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  val set_policy: (string -> bstring -> string) * (string list -> string list list) ->
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    theory -> theory
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  val restore_naming: theory -> theory -> theory
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  val hide_classes: bool -> xstring list -> theory -> theory
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  val hide_classes_i: bool -> string list -> theory -> theory
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  val hide_types: bool -> xstring list -> theory -> theory
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  val hide_types_i: bool -> string list -> theory -> theory
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  val hide_consts: bool -> xstring list -> theory -> theory
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  val hide_consts_i: bool -> string list -> theory -> theory
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end
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signature SIGN =
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sig
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  type sg    (*obsolete*)
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  val init_data: theory -> theory
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  val rep_sg: theory ->
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   {naming: NameSpace.naming,
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    syn: Syntax.syntax,
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    tsig: Type.tsig,
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    consts: (typ * stamp) NameSpace.table * typ Symtab.table}
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  val naming_of: theory -> NameSpace.naming
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  val base_name: string -> bstring
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  val full_name: theory -> bstring -> string
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  val full_name_path: theory -> string -> bstring -> string
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  val declare_name: theory -> string -> NameSpace.T -> NameSpace.T
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  val syn_of: theory -> Syntax.syntax
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  val tsig_of: theory -> Type.tsig
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  val classes: theory -> class list
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  val defaultS: theory -> sort
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  val subsort: theory -> sort * sort -> bool
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  val of_sort: theory -> typ * sort -> bool
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  val witness_sorts: theory -> sort list -> sort list -> (typ * sort) list
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  val universal_witness: theory -> (typ * sort) option
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  val all_sorts_nonempty: theory -> bool
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  val typ_instance: theory -> typ * typ -> bool
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  val typ_match: theory -> typ * typ -> Type.tyenv -> Type.tyenv
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  val typ_unify: theory -> typ * typ -> Type.tyenv * int -> Type.tyenv * int
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  val is_logtype: theory -> string -> bool
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  val const_constraint: theory -> string -> typ option
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  val the_const_constraint: theory -> string -> typ
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  val const_type: theory -> string -> typ option
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  val the_const_type: theory -> string -> typ
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  val declared_tyname: theory -> string -> bool
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  val declared_const: theory -> string -> bool
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  val class_space: theory -> NameSpace.T
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  val type_space: theory -> NameSpace.T
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  val const_space: theory -> NameSpace.T
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  val intern_class: theory -> xstring -> string
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  val extern_class: theory -> string -> xstring
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  val intern_type: theory -> xstring -> string
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  val extern_type: theory -> string -> xstring
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  val intern_const: theory -> xstring -> string
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  val extern_const: theory -> string -> xstring
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  val intern_sort: theory -> sort -> sort
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  val extern_sort: theory -> sort -> sort
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  val intern_typ: theory -> typ -> typ
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  val extern_typ: theory -> typ -> typ
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  val intern_term: theory -> term -> term
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  val extern_term: theory -> term -> term
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  val intern_tycons: theory -> typ -> typ
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  val pretty_term': Syntax.syntax -> theory -> term -> Pretty.T
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  val pretty_term: theory -> term -> Pretty.T
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  val pretty_typ: theory -> typ -> Pretty.T
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  val pretty_sort: theory -> sort -> Pretty.T
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  val pretty_classrel: theory -> class list -> Pretty.T
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  val pretty_arity: theory -> arity -> Pretty.T
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  val string_of_term: theory -> term -> string
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  val string_of_typ: theory -> typ -> string
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  val string_of_sort: theory -> sort -> string
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  val string_of_classrel: theory -> class list -> string
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  val string_of_arity: theory -> arity -> string
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  val pprint_term: theory -> term -> pprint_args -> unit
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  val pprint_typ: theory -> typ -> pprint_args -> unit
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  val pp: theory -> Pretty.pp
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  val certify_class: theory -> class -> class
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  val certify_sort: theory -> sort -> sort
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  val certify_typ: theory -> typ -> typ
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  val certify_typ_syntax: theory -> typ -> typ
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  val certify_typ_abbrev: theory -> typ -> typ
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  val certify_term: Pretty.pp -> theory -> term -> term * typ * int
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  val certify_prop: Pretty.pp -> theory -> term -> term * typ * int
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  val cert_term: theory -> term -> term
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  val cert_prop: theory -> term -> term
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  val read_sort': Syntax.syntax -> theory -> string -> sort
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  val read_sort: theory -> string -> sort
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  val read_typ': Syntax.syntax -> theory * (indexname -> sort option) -> string -> typ
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  val read_typ_syntax': Syntax.syntax -> theory * (indexname -> sort option) -> string -> typ
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  val read_typ_abbrev': Syntax.syntax -> theory * (indexname -> sort option) -> string -> typ
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  val read_typ: theory * (indexname -> sort option) -> string -> typ
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  val read_typ_syntax: theory * (indexname -> sort option) -> string -> typ
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  val read_typ_abbrev: theory * (indexname -> sort option) -> string -> typ
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  val read_tyname: theory -> string -> typ
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  val read_const: theory -> string -> term
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  val infer_types_simult: Pretty.pp -> theory -> (indexname -> typ option) ->
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    (indexname -> sort option) -> string list -> bool
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    -> (term list * typ) list -> term list * (indexname * typ) list
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  val infer_types: Pretty.pp -> theory -> (indexname -> typ option) ->
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    (indexname -> sort option) -> string list -> bool
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    -> term list * typ -> term * (indexname * typ) list
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  val read_def_terms': Pretty.pp -> (string -> bool) -> Syntax.syntax ->
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    theory * (indexname -> typ option) * (indexname -> sort option) ->
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    string list -> bool -> (string * typ) list -> term list * (indexname * typ) list
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  val read_def_terms:
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    theory * (indexname -> typ option) * (indexname -> sort option) ->
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    string list -> bool -> (string * typ) list -> term list * (indexname * typ) list
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  val simple_read_term: theory -> typ -> string -> term
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  val read_term: theory -> string -> term
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  val read_prop: theory -> string -> term
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  val const_of_class: class -> string
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  val class_of_const: string -> class
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  include SIGN_THEORY
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end
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structure Sign: SIGN =
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struct
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type sg = theory;
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(** datatype sign **)
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datatype sign = Sign of
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 {naming: NameSpace.naming,                 (*common naming conventions*)
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  syn: Syntax.syntax,                       (*concrete syntax for terms, types, sorts*)
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  tsig: Type.tsig,                          (*order-sorted signature of types*)
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  consts:
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    (typ * stamp) NameSpace.table *         (*type schemes of declared term constants*)
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    typ Symtab.table};                      (*type constraints for constants*)
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fun make_sign (naming, syn, tsig, consts) =
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  Sign {naming = naming, syn = syn, tsig = tsig, consts = consts};
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fun err_dup_consts cs =
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  error ("Duplicate declaration of constant(s) " ^ commas_quote cs);
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fun err_inconsistent_constraints cs =
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  error ("Inconsistent type constraints for constant(s) " ^ commas_quote cs);
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structure SignData = TheoryDataFun
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(struct
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  val name = "Pure/sign";
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  type T = sign;
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  val copy = I;
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  val extend = I;
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  val empty = make_sign (NameSpace.default_naming, Syntax.pure_syn, Type.empty_tsig,
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    (NameSpace.empty_table, Symtab.empty));
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  fun merge pp (sign1, sign2) =
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    let
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      val Sign {naming = _, syn = syn1, tsig = tsig1, consts = (consts1, constraints1)} = sign1;
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      val Sign {naming = _, syn = syn2, tsig = tsig2, consts = (consts2, constraints2)} = sign2;
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      val naming = NameSpace.default_naming;
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      val syn = Syntax.merge_syntaxes syn1 syn2;
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      val tsig = Type.merge_tsigs pp (tsig1, tsig2);
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      val consts = NameSpace.merge_tables eq_snd (consts1, consts2)
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        handle Symtab.DUPS cs => err_dup_consts cs;
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      val constraints = Symtab.merge (op =) (constraints1, constraints2)
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        handle Symtab.DUPS cs => err_inconsistent_constraints cs;
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    in make_sign (naming, syn, tsig, (consts, constraints)) end;
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  fun print _ _ = ();
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end);
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val init_data = SignData.init;
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fun rep_sg thy = SignData.get thy |> (fn Sign args => args);
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fun map_sign f = SignData.map (fn Sign {naming, syn, tsig, consts} =>
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  make_sign (f (naming, syn, tsig, consts)));
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fun map_naming f = map_sign (fn (naming, syn, tsig, consts) => (f naming, syn, tsig, consts));
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fun map_syn f = map_sign (fn (naming, syn, tsig, consts) => (naming, f syn, tsig, consts));
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fun map_tsig f = map_sign (fn (naming, syn, tsig, consts) => (naming, syn, f tsig, consts));
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fun map_consts f = map_sign (fn (naming, syn, tsig, consts) => (naming, syn, tsig, f consts));
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(* naming *)
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val naming_of = #naming o rep_sg;
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val base_name = NameSpace.base;
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val full_name = NameSpace.full o naming_of;
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fun full_name_path thy elems = NameSpace.full (NameSpace.add_path elems (naming_of thy));
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val declare_name = NameSpace.declare o naming_of;
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(* syntax *)
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val syn_of = #syn o rep_sg;
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(* type signature *)
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val tsig_of = #tsig o rep_sg;
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val classes = Type.classes o tsig_of;
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val defaultS = Type.defaultS o tsig_of;
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val subsort = Type.subsort o tsig_of;
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val of_sort = Type.of_sort o tsig_of;
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val witness_sorts = Type.witness_sorts o tsig_of;
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val universal_witness = Type.universal_witness o tsig_of;
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val all_sorts_nonempty = is_some o universal_witness;
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val typ_instance = Type.typ_instance o tsig_of;
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val typ_match = Type.typ_match o tsig_of;
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val typ_unify = Type.unify o tsig_of;
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fun is_logtype thy c = c mem_string Type.logical_types (tsig_of thy);
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(* consts signature *)
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fun const_constraint thy c =
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  let val ((_, consts), constraints) = #consts (rep_sg thy) in
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    (case Symtab.lookup (constraints, c) of
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      NONE => Option.map #1 (Symtab.lookup (consts, c))
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    | some => some)
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  end;
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fun the_const_constraint thy c =
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  (case const_constraint thy c of SOME T => T
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  | NONE => raise TYPE ("Undeclared constant " ^ quote c, [], []));
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fun const_type thy c = Option.map #1 (Symtab.lookup (#2 (#1 (#consts (rep_sg thy))), c));
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fun the_const_type thy c =
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  (case const_type thy c of SOME T => T
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  | NONE => raise TYPE ("Undeclared constant " ^ quote c, [], []));
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val declared_tyname = Symtab.defined o #2 o #types o Type.rep_tsig o tsig_of;
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val declared_const = is_some oo const_type;
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(** intern / extern names **)
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val class_space = #1 o #classes o Type.rep_tsig o tsig_of;
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val type_space = #1 o #types o Type.rep_tsig o tsig_of;
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val const_space = #1 o #1 o #consts o rep_sg
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val intern_class = NameSpace.intern o class_space;
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val extern_class = NameSpace.extern o class_space;
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val intern_type = NameSpace.intern o type_space;
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val extern_type = NameSpace.extern o type_space;
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val intern_const = NameSpace.intern o const_space;
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val extern_const = NameSpace.extern o const_space;
wenzelm@16337
   307
wenzelm@16337
   308
val intern_sort = map o intern_class;
wenzelm@16337
   309
val extern_sort = map o extern_class;
wenzelm@16337
   310
wenzelm@16337
   311
local
wenzelm@14645
   312
wenzelm@16337
   313
fun mapping add_names f t =
wenzelm@16337
   314
  let
wenzelm@16337
   315
    fun f' x = let val y = f x in if x = y then NONE else SOME (x, y) end;
wenzelm@16337
   316
    val tab = List.mapPartial f' (add_names (t, []));
wenzelm@16337
   317
    fun get x = if_none (assoc_string (tab, x)) x;
wenzelm@16337
   318
  in get end;
wenzelm@16337
   319
wenzelm@16442
   320
fun typ_mapping f g thy T =
wenzelm@16337
   321
  T |> Term.map_typ
wenzelm@16442
   322
    (mapping add_typ_classes (f thy) T)
wenzelm@16442
   323
    (mapping add_typ_tycons (g thy) T);
wenzelm@14645
   324
wenzelm@16442
   325
fun term_mapping f g h thy t =
wenzelm@16337
   326
  t |> Term.map_term
wenzelm@16442
   327
    (mapping add_term_classes (f thy) t)
wenzelm@16442
   328
    (mapping add_term_tycons (g thy) t)
wenzelm@16442
   329
    (mapping add_term_consts (h thy) t);
wenzelm@16337
   330
wenzelm@16337
   331
in
wenzelm@14645
   332
wenzelm@16368
   333
val intern_typ = typ_mapping intern_class intern_type;
wenzelm@16368
   334
val extern_typ = typ_mapping extern_class extern_type;
wenzelm@16368
   335
val intern_term = term_mapping intern_class intern_type intern_const;
wenzelm@16368
   336
val extern_term = term_mapping extern_class extern_type extern_const;
wenzelm@16368
   337
val intern_tycons = typ_mapping (K I) intern_type;
wenzelm@16337
   338
wenzelm@16337
   339
end;
wenzelm@14645
   340
wenzelm@14645
   341
wenzelm@14645
   342
wenzelm@4249
   343
(** pretty printing of terms, types etc. **)
wenzelm@3937
   344
wenzelm@16442
   345
fun pretty_term' syn thy t =
wenzelm@16597
   346
  Syntax.pretty_term thy syn (Context.exists_name Context.CPureN thy) (extern_term thy t);
wenzelm@16442
   347
fun pretty_term thy t = pretty_term' (syn_of thy) thy t;
wenzelm@16597
   348
fun pretty_typ thy T = Syntax.pretty_typ thy (syn_of thy) (extern_typ thy T);
wenzelm@16597
   349
fun pretty_sort thy S = Syntax.pretty_sort thy (syn_of thy) (extern_sort thy S);
wenzelm@3937
   350
wenzelm@16442
   351
fun pretty_classrel thy cs = Pretty.block (List.concat
wenzelm@16442
   352
  (separate [Pretty.str " <", Pretty.brk 1] (map (single o pretty_sort thy o single) cs)));
wenzelm@3937
   353
wenzelm@16442
   354
fun pretty_arity thy (a, Ss, S) =
wenzelm@3937
   355
  let
wenzelm@16442
   356
    val a' = extern_type thy a;
wenzelm@3937
   357
    val dom =
wenzelm@3937
   358
      if null Ss then []
wenzelm@16442
   359
      else [Pretty.list "(" ")" (map (pretty_sort thy) Ss), Pretty.brk 1];
wenzelm@16442
   360
  in Pretty.block ([Pretty.str (a' ^ " ::"), Pretty.brk 1] @ dom @ [pretty_sort thy S]) end;
wenzelm@3937
   361
wenzelm@14828
   362
val string_of_term = Pretty.string_of oo pretty_term;
wenzelm@14828
   363
val string_of_typ = Pretty.string_of oo pretty_typ;
wenzelm@14828
   364
val string_of_sort = Pretty.string_of oo pretty_sort;
wenzelm@14828
   365
val string_of_classrel = Pretty.string_of oo pretty_classrel;
wenzelm@14828
   366
val string_of_arity = Pretty.string_of oo pretty_arity;
wenzelm@3937
   367
wenzelm@16337
   368
val pprint_term = (Pretty.pprint o Pretty.quote) oo pretty_term;
wenzelm@16337
   369
val pprint_typ = (Pretty.pprint o Pretty.quote) oo pretty_typ;
wenzelm@3937
   370
wenzelm@16442
   371
fun pp thy = Pretty.pp (pretty_term thy, pretty_typ thy, pretty_sort thy,
wenzelm@16442
   372
  pretty_classrel thy, pretty_arity thy);
wenzelm@14828
   373
wenzelm@3937
   374
wenzelm@3937
   375
wenzelm@16337
   376
(** certify entities **)    (*exception TYPE*)
wenzelm@8898
   377
wenzelm@16337
   378
(* certify wrt. type signature *)
wenzelm@8898
   379
wenzelm@16723
   380
fun certify cert = cert o tsig_of o Context.check_thy;
wenzelm@562
   381
wenzelm@16337
   382
val certify_class      = certify Type.cert_class;
wenzelm@16337
   383
val certify_sort       = certify Type.cert_sort;
wenzelm@16337
   384
val certify_typ        = certify Type.cert_typ;
wenzelm@16337
   385
val certify_typ_syntax = certify Type.cert_typ_syntax;
wenzelm@16337
   386
val certify_typ_abbrev = certify Type.cert_typ_abbrev;
wenzelm@10443
   387
wenzelm@4961
   388
wenzelm@4961
   389
(* certify_term *)
wenzelm@4961
   390
wenzelm@14987
   391
local
nipkow@1494
   392
wenzelm@16337
   393
(*determine and check the type of a term*)
wenzelm@16337
   394
fun type_check pp tm =
wenzelm@4961
   395
  let
wenzelm@4961
   396
    fun err_appl why bs t T u U =
wenzelm@4961
   397
      let
wenzelm@10404
   398
        val xs = map Free bs;           (*we do not rename here*)
wenzelm@4961
   399
        val t' = subst_bounds (xs, t);
wenzelm@4961
   400
        val u' = subst_bounds (xs, u);
wenzelm@16337
   401
        val msg = cat_lines
wenzelm@14828
   402
          (TypeInfer.appl_error (Syntax.pp_show_brackets pp) why t' T u' U);
wenzelm@16337
   403
      in raise TYPE (msg, [T, U], [t', u']) end;
wenzelm@4961
   404
wenzelm@4961
   405
    fun typ_of (_, Const (_, T)) = T
wenzelm@4961
   406
      | typ_of (_, Free  (_, T)) = T
wenzelm@4961
   407
      | typ_of (_, Var (_, T)) = T
skalberg@15570
   408
      | typ_of (bs, Bound i) = snd (List.nth (bs, i) handle Subscript =>
wenzelm@4961
   409
          raise TYPE ("Loose bound variable: B." ^ string_of_int i, [], [Bound i]))
wenzelm@4961
   410
      | typ_of (bs, Abs (x, T, body)) = T --> typ_of ((x, T) :: bs, body)
wenzelm@4961
   411
      | typ_of (bs, t $ u) =
wenzelm@4961
   412
          let val T = typ_of (bs, t) and U = typ_of (bs, u) in
wenzelm@4961
   413
            (case T of
wenzelm@4961
   414
              Type ("fun", [T1, T2]) =>
wenzelm@14828
   415
                if T1 = U then T2 else err_appl "Incompatible operand type" bs t T u U
wenzelm@14828
   416
            | _ => err_appl "Operator not of function type" bs t T u U)
wenzelm@4961
   417
          end;
wenzelm@4961
   418
wenzelm@4961
   419
  in typ_of ([], tm) end;
clasohm@0
   420
wenzelm@14987
   421
in
wenzelm@14987
   422
wenzelm@16442
   423
fun certify_term pp thy tm =
wenzelm@251
   424
  let
wenzelm@16723
   425
    val _ = Context.check_thy thy;
wenzelm@14784
   426
wenzelm@16442
   427
    val tm' = map_term_types (certify_typ thy) tm;
wenzelm@14784
   428
    val tm' = if tm = tm' then tm else tm';  (*avoid copying of already normal term*)
wenzelm@14784
   429
wenzelm@14784
   430
    fun err msg = raise TYPE (msg, [], [tm']);
wenzelm@3969
   431
wenzelm@14828
   432
    fun show_const a T = quote a ^ " :: " ^ Pretty.string_of_typ pp T;
wenzelm@169
   433
wenzelm@14784
   434
    fun check_atoms (t $ u) = (check_atoms t; check_atoms u)
wenzelm@14784
   435
      | check_atoms (Abs (_, _, t)) = check_atoms t
wenzelm@14784
   436
      | check_atoms (Const (a, T)) =
wenzelm@16442
   437
          (case const_type thy a of
skalberg@15531
   438
            NONE => err ("Undeclared constant " ^ show_const a T)
skalberg@15531
   439
          | SOME U =>
wenzelm@16442
   440
              if typ_instance thy (T, U) then ()
wenzelm@14784
   441
              else err ("Illegal type for constant " ^ show_const a T))
wenzelm@14784
   442
      | check_atoms (Var ((x, i), _)) =
wenzelm@14784
   443
          if i < 0 then err ("Malformed variable: " ^ quote x) else ()
wenzelm@14784
   444
      | check_atoms _ = ();
wenzelm@14784
   445
  in
wenzelm@14784
   446
    check_atoms tm';
wenzelm@16337
   447
    (tm', type_check pp tm', maxidx_of_term tm')
wenzelm@14784
   448
  end;
wenzelm@251
   449
wenzelm@14987
   450
end;
wenzelm@14987
   451
wenzelm@16494
   452
fun certify_prop pp thy tm =
wenzelm@16494
   453
  let val res as (tm', T, _) = certify_term pp thy tm
wenzelm@16494
   454
  in if T <> propT then raise TYPE ("Term not of type prop", [T], [tm']) else res end;
wenzelm@16494
   455
wenzelm@16494
   456
fun cert_term thy tm = #1 (certify_term (pp thy) thy tm);
wenzelm@16494
   457
fun cert_prop thy tm = #1 (certify_prop (pp thy) thy tm);
wenzelm@16494
   458
wenzelm@251
   459
wenzelm@16337
   460
wenzelm@16442
   461
(** read and certify entities **)    (*exception ERROR*)
wenzelm@16337
   462
wenzelm@16337
   463
(* sorts *)
wenzelm@16337
   464
wenzelm@16442
   465
fun read_sort' syn thy str =
wenzelm@16337
   466
  let
wenzelm@16723
   467
    val _ = Context.check_thy thy;
wenzelm@16597
   468
    val S = intern_sort thy (Syntax.read_sort thy syn str);
wenzelm@16442
   469
  in certify_sort thy S handle TYPE (msg, _, _) => error msg end;
wenzelm@16337
   470
wenzelm@16442
   471
fun read_sort thy str = read_sort' (syn_of thy) thy str;
wenzelm@16337
   472
wenzelm@16337
   473
wenzelm@16337
   474
(* types *)
wenzelm@16337
   475
wenzelm@16337
   476
local
wenzelm@16337
   477
wenzelm@16442
   478
fun gen_read_typ' cert syn (thy, def_sort) str =
wenzelm@16337
   479
  let
wenzelm@16723
   480
    val _ = Context.check_thy thy;
wenzelm@16442
   481
    val get_sort = TypeInfer.get_sort (tsig_of thy) def_sort (intern_sort thy);
wenzelm@16597
   482
    val T = intern_tycons thy (Syntax.read_typ thy syn get_sort (intern_sort thy) str);
wenzelm@16442
   483
  in cert thy T handle TYPE (msg, _, _) => error msg end
wenzelm@16337
   484
  handle ERROR => error ("The error(s) above occurred in type " ^ quote str);
wenzelm@16337
   485
wenzelm@16442
   486
fun gen_read_typ cert (thy, def_sort) str =
wenzelm@16442
   487
  gen_read_typ' cert (syn_of thy) (thy, def_sort) str;
wenzelm@16337
   488
wenzelm@16337
   489
in
wenzelm@16337
   490
wenzelm@16442
   491
fun no_def_sort thy = (thy: theory, K NONE);
wenzelm@16337
   492
wenzelm@16442
   493
val read_typ'        = gen_read_typ' certify_typ;
wenzelm@16442
   494
val read_typ_syntax' = gen_read_typ' certify_typ_syntax;
wenzelm@16442
   495
val read_typ_abbrev' = gen_read_typ' certify_typ_abbrev;
wenzelm@16442
   496
val read_typ         = gen_read_typ certify_typ;
wenzelm@16442
   497
val read_typ_syntax  = gen_read_typ certify_typ_syntax;
wenzelm@16442
   498
val read_typ_abbrev  = gen_read_typ certify_typ_abbrev;
wenzelm@16337
   499
wenzelm@16337
   500
end;
wenzelm@16337
   501
wenzelm@16337
   502
wenzelm@16368
   503
(* type and constant names *)
wenzelm@15703
   504
wenzelm@16442
   505
fun read_tyname thy raw_c =
wenzelm@16442
   506
  let val c = intern_type thy raw_c in
wenzelm@16442
   507
    (case Symtab.lookup (#2 (#types (Type.rep_tsig (tsig_of thy))), c) of
wenzelm@15703
   508
      SOME (Type.LogicalType n, _) => Type (c, replicate n dummyT)
wenzelm@16368
   509
    | _ => error ("Undeclared type constructor: " ^ quote c))
wenzelm@15703
   510
  end;
wenzelm@15703
   511
wenzelm@16442
   512
fun read_const thy raw_c =
wenzelm@16368
   513
  let
wenzelm@16442
   514
    val c = intern_const thy raw_c;
wenzelm@16442
   515
    val _ = the_const_type thy c handle TYPE (msg, _, _) => error msg;
wenzelm@16368
   516
  in Const (c, dummyT) end;
wenzelm@15703
   517
wenzelm@15703
   518
wenzelm@251
   519
wenzelm@583
   520
(** infer_types **)         (*exception ERROR*)
wenzelm@251
   521
wenzelm@2979
   522
(*
wenzelm@16337
   523
  def_type: partial map from indexnames to types (constrains Frees and Vars)
wenzelm@16337
   524
  def_sort: partial map from indexnames to sorts (constrains TFrees and TVars)
wenzelm@2979
   525
  used: list of already used type variables
wenzelm@2979
   526
  freeze: if true then generated parameters are turned into TFrees, else TVars
wenzelm@4249
   527
wenzelm@4249
   528
  termss: lists of alternative parses (only one combination should be type-correct)
wenzelm@4249
   529
  typs: expected types
wenzelm@2979
   530
*)
wenzelm@2979
   531
wenzelm@16442
   532
fun infer_types_simult pp thy def_type def_sort used freeze args =
wenzelm@251
   533
  let
skalberg@15574
   534
    val termss = foldr multiply [[]] (map fst args);
wenzelm@4249
   535
    val typs =
wenzelm@16442
   536
      map (fn (_, T) => certify_typ thy T handle TYPE (msg, _, _) => error msg) args;
wenzelm@169
   537
wenzelm@16442
   538
    fun infer ts = OK (TypeInfer.infer_types (Syntax.pp_show_brackets pp) (tsig_of thy)
wenzelm@16941
   539
        (const_constraint thy) def_type def_sort (intern_const thy) (intern_tycons thy)
wenzelm@16442
   540
        (intern_sort thy) used freeze typs ts)
wenzelm@4249
   541
      handle TYPE (msg, _, _) => Error msg;
clasohm@623
   542
wenzelm@4249
   543
    val err_results = map infer termss;
skalberg@15570
   544
    val errs = List.mapPartial get_error err_results;
skalberg@15570
   545
    val results = List.mapPartial get_ok err_results;
wenzelm@4249
   546
wenzelm@14645
   547
    val ambiguity = length termss;
wenzelm@14645
   548
wenzelm@4249
   549
    fun ambig_msg () =
wenzelm@4249
   550
      if ambiguity > 1 andalso ambiguity <= ! Syntax.ambiguity_level
wenzelm@4249
   551
      then
wenzelm@4249
   552
        error_msg "Got more than one parse tree.\n\
wenzelm@3805
   553
          \Retry with smaller Syntax.ambiguity_level for more information."
nipkow@952
   554
      else ();
wenzelm@4249
   555
  in
wenzelm@4249
   556
    if null results then (ambig_msg (); error (cat_lines errs))
wenzelm@4249
   557
    else if length results = 1 then
wenzelm@4249
   558
      (if ambiguity > ! Syntax.ambiguity_level then
wenzelm@4249
   559
        warning "Fortunately, only one parse tree is type correct.\n\
wenzelm@4249
   560
          \You may still want to disambiguate your grammar or your input."
wenzelm@4249
   561
      else (); hd results)
wenzelm@4249
   562
    else (ambig_msg (); error ("More than one term is type correct:\n" ^
skalberg@15570
   563
      cat_lines (map (Pretty.string_of_term pp) (List.concat (map fst results)))))
wenzelm@4249
   564
  end;
clasohm@623
   565
wenzelm@16442
   566
fun infer_types pp thy def_type def_sort used freeze tsT =
wenzelm@16442
   567
  apfst hd (infer_types_simult pp thy def_type def_sort used freeze [tsT]);
wenzelm@251
   568
wenzelm@251
   569
wenzelm@16494
   570
(* read_def_terms -- read terms and infer types *)    (*exception ERROR*)
wenzelm@16337
   571
wenzelm@16442
   572
fun read_def_terms' pp is_logtype syn (thy, types, sorts) used freeze sTs =
wenzelm@8607
   573
  let
wenzelm@8607
   574
    fun read (s, T) =
wenzelm@16442
   575
      let val T' = certify_typ thy T handle TYPE (msg, _, _) => error msg
wenzelm@16597
   576
      in (Syntax.read thy is_logtype syn T' s, T') end;
wenzelm@16442
   577
  in infer_types_simult pp thy types sorts used freeze (map read sTs) end;
wenzelm@8607
   578
wenzelm@16442
   579
fun read_def_terms (thy, types, sorts) =
wenzelm@16442
   580
  read_def_terms' (pp thy) (is_logtype thy) (syn_of thy) (thy, types, sorts);
wenzelm@12068
   581
wenzelm@16442
   582
fun simple_read_term thy T s =
wenzelm@16442
   583
  let val ([t], _) = read_def_terms (thy, K NONE, K NONE) [] true [(s, T)]
wenzelm@16337
   584
  in t end
wenzelm@16337
   585
  handle ERROR => error ("The error(s) above occurred for term " ^ s);
wenzelm@8802
   586
wenzelm@16494
   587
fun read_term thy = simple_read_term thy TypeInfer.logicT;
wenzelm@16494
   588
fun read_prop thy = simple_read_term thy propT;
wenzelm@16494
   589
wenzelm@8607
   590
wenzelm@2979
   591
wenzelm@16337
   592
(** signature extension functions **)  (*exception ERROR/TYPE*)
wenzelm@386
   593
wenzelm@386
   594
(* add default sort *)
wenzelm@386
   595
wenzelm@16442
   596
fun gen_add_defsort prep_sort s thy =
wenzelm@16442
   597
  thy |> map_tsig (Type.set_defsort (prep_sort thy s));
wenzelm@8898
   598
wenzelm@16337
   599
val add_defsort = gen_add_defsort read_sort;
wenzelm@16337
   600
val add_defsort_i = gen_add_defsort certify_sort;
wenzelm@386
   601
wenzelm@386
   602
wenzelm@386
   603
(* add type constructors *)
wenzelm@386
   604
wenzelm@16442
   605
fun add_types types thy = thy |> map_sign (fn (naming, syn, tsig, consts) =>
wenzelm@14856
   606
  let
wenzelm@16597
   607
    val syn' = Syntax.extend_type_gram types syn;
wenzelm@16368
   608
    val decls = map (fn (a, n, mx) => (Syntax.type_name a mx, n)) types;
wenzelm@16442
   609
    val tsig' = Type.add_types naming decls tsig;
wenzelm@16442
   610
  in (naming, syn', tsig', consts) end);
wenzelm@16442
   611
wenzelm@16442
   612
fun add_typedecls decls thy =
wenzelm@16442
   613
  let
wenzelm@16442
   614
    fun type_of (a, vs, mx) =
wenzelm@16442
   615
      if null (duplicates vs) then (a, length vs, mx)
wenzelm@16442
   616
      else error ("Duplicate parameters in type declaration: " ^ quote a);
wenzelm@16442
   617
  in add_types (map type_of decls) thy end;
wenzelm@16337
   618
wenzelm@16337
   619
wenzelm@16337
   620
(* add nonterminals *)
wenzelm@16337
   621
wenzelm@16442
   622
fun add_nonterminals ns thy = thy |> map_sign (fn (naming, syn, tsig, consts) =>
wenzelm@16337
   623
  let
wenzelm@16597
   624
    val syn' = Syntax.extend_consts ns syn;
wenzelm@16442
   625
    val tsig' = Type.add_nonterminals naming ns tsig;
wenzelm@16442
   626
  in (naming, syn', tsig', consts) end);
wenzelm@386
   627
wenzelm@386
   628
wenzelm@386
   629
(* add type abbreviations *)
wenzelm@386
   630
wenzelm@16442
   631
fun gen_add_tyabbr prep_typ (a, vs, rhs, mx) thy =
wenzelm@16442
   632
  thy |> map_sign (fn (naming, syn, tsig, consts) =>
wenzelm@16337
   633
    let
wenzelm@16597
   634
      val syn' = Syntax.extend_type_gram [(a, length vs, mx)] syn;
wenzelm@16368
   635
      val a' = Syntax.type_name a mx;
wenzelm@16442
   636
      val abbr = (a', vs, prep_typ thy rhs)
wenzelm@16442
   637
        handle ERROR => error ("in type abbreviation " ^ quote a');
wenzelm@16442
   638
      val tsig' = Type.add_abbrevs naming [abbr] tsig;
wenzelm@16442
   639
    in (naming, syn', tsig', consts) end);
wenzelm@386
   640
wenzelm@16337
   641
val add_tyabbrs = fold (gen_add_tyabbr (read_typ_syntax o no_def_sort));
wenzelm@16337
   642
val add_tyabbrs_i = fold (gen_add_tyabbr certify_typ_syntax);
wenzelm@14784
   643
wenzelm@14784
   644
wenzelm@386
   645
(* add type arities *)
wenzelm@386
   646
wenzelm@16442
   647
fun gen_add_arities int_type prep_sort arities thy = thy |> map_tsig (fn tsig =>
wenzelm@16368
   648
  let
wenzelm@16442
   649
    fun prep_arity (a, Ss, S) = (int_type thy a, map (prep_sort thy) Ss, prep_sort thy S)
wenzelm@16368
   650
      handle ERROR => error ("in arity for type " ^ quote a);
wenzelm@16442
   651
    val tsig' = Type.add_arities (pp thy) (map prep_arity arities) tsig;
wenzelm@16368
   652
  in tsig' end);
wenzelm@386
   653
wenzelm@16368
   654
val add_arities = gen_add_arities intern_type read_sort;
wenzelm@16337
   655
val add_arities_i = gen_add_arities (K I) certify_sort;
wenzelm@8898
   656
wenzelm@386
   657
wenzelm@16337
   658
(* modify syntax *)
wenzelm@16337
   659
wenzelm@16442
   660
fun gen_syntax change_gram prep_typ prmode args thy =
wenzelm@16337
   661
  let
wenzelm@16442
   662
    fun prep (c, T, mx) = (c, prep_typ thy T, mx)
wenzelm@16442
   663
      handle ERROR => error ("in syntax declaration " ^ quote (Syntax.const_name c mx));
wenzelm@16597
   664
  in thy |> map_syn (change_gram (is_logtype thy) prmode (map prep args)) end;
wenzelm@16337
   665
wenzelm@16337
   666
fun gen_add_syntax x = gen_syntax Syntax.extend_const_gram x;
wenzelm@386
   667
wenzelm@16337
   668
val add_modesyntax = gen_add_syntax (read_typ_syntax o no_def_sort);
wenzelm@16337
   669
val add_modesyntax_i = gen_add_syntax certify_typ_syntax;
wenzelm@16442
   670
val add_syntax = add_modesyntax Syntax.default_mode;
wenzelm@16442
   671
val add_syntax_i = add_modesyntax_i Syntax.default_mode;
wenzelm@16337
   672
val del_modesyntax = gen_syntax Syntax.remove_const_gram (read_typ_syntax o no_def_sort);
wenzelm@16337
   673
val del_modesyntax_i = gen_syntax Syntax.remove_const_gram certify_typ_syntax;
wenzelm@3805
   674
wenzelm@16337
   675
wenzelm@16337
   676
(* add constants *)
wenzelm@386
   677
wenzelm@16442
   678
fun gen_add_consts prep_typ raw_args thy =
wenzelm@386
   679
  let
wenzelm@16988
   680
    val prepT = Compress.typ thy o Type.varifyT o Type.no_tvars o Term.no_dummyT o prep_typ thy;
wenzelm@16337
   681
    fun prep (c, T, mx) = ((c, prepT T, mx) handle TYPE (msg, _, _) => error msg)
wenzelm@16337
   682
      handle ERROR => error ("in declaration of constant " ^ quote (Syntax.const_name c mx));
wenzelm@16337
   683
    val args = map prep raw_args;
wenzelm@16368
   684
    val decls = args |> map (fn (c, T, mx) => (Syntax.const_name c mx, (T, stamp ())));
wenzelm@16442
   685
wenzelm@16442
   686
    fun extend_consts consts = NameSpace.extend_table (naming_of thy) (consts, decls)
wenzelm@16368
   687
      handle Symtab.DUPS cs => err_dup_consts cs;
wenzelm@16442
   688
  in
wenzelm@16442
   689
    thy
wenzelm@16941
   690
    |> map_consts (apfst extend_consts)
wenzelm@16442
   691
    |> add_syntax_i args
wenzelm@16442
   692
  end;
wenzelm@386
   693
wenzelm@16337
   694
val add_consts = gen_add_consts (read_typ o no_def_sort);
wenzelm@16337
   695
val add_consts_i = gen_add_consts certify_typ;
wenzelm@386
   696
wenzelm@386
   697
wenzelm@16941
   698
(* add constraints *)
wenzelm@16941
   699
wenzelm@16941
   700
fun gen_add_constraint int_const prep_typ (raw_c, raw_T) thy =
wenzelm@16941
   701
  let
wenzelm@16941
   702
    val c = int_const thy raw_c;
wenzelm@16941
   703
    val T = Term.zero_var_indexesT (Term.no_dummyT (prep_typ thy raw_T))
wenzelm@16941
   704
      handle TYPE (msg, _, _) => error msg;
wenzelm@16941
   705
    val _ = cert_term thy (Const (c, T))
wenzelm@16941
   706
      handle TYPE (msg, _, _) => error msg;
wenzelm@16941
   707
  in thy |> map_consts (apsnd (curry Symtab.update (c, T))) end;
wenzelm@16941
   708
wenzelm@16941
   709
val add_const_constraint = gen_add_constraint intern_const (read_typ o no_def_sort);
wenzelm@16941
   710
val add_const_constraint_i = gen_add_constraint (K I) certify_typ;
wenzelm@16941
   711
wenzelm@16941
   712
wenzelm@386
   713
(* add type classes *)
wenzelm@386
   714
wenzelm@16337
   715
val classN = "_class";
wenzelm@386
   716
wenzelm@16337
   717
val const_of_class = suffix classN;
wenzelm@16337
   718
fun class_of_const c = unsuffix classN c
wenzelm@16337
   719
  handle Fail _ => raise TERM ("class_of_const: bad name " ^ quote c, []);
wenzelm@386
   720
wenzelm@16442
   721
fun gen_add_class int_class (bclass, raw_classes) thy =
wenzelm@16442
   722
  thy |> map_sign (fn (naming, syn, tsig, consts) =>
wenzelm@16337
   723
    let
wenzelm@16442
   724
      val classes = map (int_class thy) raw_classes;
wenzelm@16597
   725
      val syn' = Syntax.extend_consts [bclass] syn;
wenzelm@16442
   726
      val tsig' = Type.add_classes (pp thy) naming [(bclass, classes)] tsig;
wenzelm@16442
   727
    in (naming, syn', tsig', consts) end)
wenzelm@16337
   728
  |> add_consts_i [(const_of_class bclass, a_itselfT --> propT, Syntax.NoSyn)];
wenzelm@3791
   729
wenzelm@16337
   730
val add_classes = fold (gen_add_class intern_class);
wenzelm@16337
   731
val add_classes_i = fold (gen_add_class (K I));
wenzelm@386
   732
wenzelm@386
   733
wenzelm@2963
   734
(* add to classrel *)
wenzelm@421
   735
wenzelm@16442
   736
fun gen_add_classrel int_class raw_pairs thy = thy |> map_tsig (fn tsig =>
wenzelm@16368
   737
  let
wenzelm@16442
   738
    val pairs = map (pairself (int_class thy)) raw_pairs;
wenzelm@16442
   739
    val tsig' = Type.add_classrel (pp thy) pairs tsig;
wenzelm@16368
   740
  in tsig' end);
wenzelm@16337
   741
wenzelm@16337
   742
val add_classrel = gen_add_classrel intern_class;
wenzelm@16337
   743
val add_classrel_i = gen_add_classrel (K I);
wenzelm@421
   744
wenzelm@421
   745
wenzelm@14645
   746
(* add translation functions *)
wenzelm@14645
   747
wenzelm@15746
   748
local
wenzelm@15746
   749
wenzelm@15746
   750
fun mk trs = map Syntax.mk_trfun trs;
wenzelm@15746
   751
wenzelm@16597
   752
fun gen_add_trfuns ext non_typed (atrs, trs, tr's, atr's) =
wenzelm@16597
   753
  map_syn (ext (mk atrs, mk trs, mk (map (apsnd non_typed) tr's), mk atr's));
wenzelm@14645
   754
wenzelm@16597
   755
fun gen_add_trfunsT ext tr's = map_syn (ext ([], [], mk tr's, []));
wenzelm@14645
   756
wenzelm@15746
   757
in
wenzelm@15746
   758
wenzelm@16597
   759
val add_trfuns = gen_add_trfuns Syntax.extend_trfuns Syntax.non_typed_tr';
wenzelm@16597
   760
val add_trfunsT = gen_add_trfunsT Syntax.extend_trfuns;
wenzelm@16597
   761
val add_advanced_trfuns = gen_add_trfuns Syntax.extend_advanced_trfuns Syntax.non_typed_tr'';
wenzelm@16597
   762
val add_advanced_trfunsT = gen_add_trfunsT Syntax.extend_advanced_trfuns;
wenzelm@14645
   763
wenzelm@15746
   764
end;
wenzelm@15746
   765
wenzelm@16597
   766
val add_tokentrfuns = map_syn o Syntax.extend_tokentrfuns;
wenzelm@16442
   767
fun add_mode_tokentrfuns m = add_tokentrfuns o map (fn (s, f) => (m, s, f));
wenzelm@14645
   768
wenzelm@14645
   769
wenzelm@4619
   770
(* add translation rules *)
wenzelm@4619
   771
wenzelm@16442
   772
fun add_trrules args thy = thy |> map_syn (fn syn =>
wenzelm@16442
   773
  let val rules = map (Syntax.map_trrule (apfst (intern_type thy))) args
wenzelm@16597
   774
  in Syntax.extend_trrules thy (is_logtype thy) syn rules syn end);
wenzelm@8725
   775
wenzelm@16597
   776
val add_trrules_i = map_syn o Syntax.extend_trrules_i;
wenzelm@386
   777
wenzelm@386
   778
wenzelm@16337
   779
(* modify naming *)
wenzelm@6546
   780
wenzelm@16337
   781
val add_path        = map_naming o NameSpace.add_path;
wenzelm@16337
   782
val qualified_names = map_naming NameSpace.qualified_names;
wenzelm@16337
   783
val no_base_names   = map_naming NameSpace.no_base_names;
wenzelm@16337
   784
val custom_accesses = map_naming o NameSpace.custom_accesses;
wenzelm@16337
   785
val set_policy      = map_naming o NameSpace.set_policy;
wenzelm@16337
   786
val restore_naming  = map_naming o K o naming_of;
wenzelm@6546
   787
wenzelm@16442
   788
val parent_path     = add_path "..";
wenzelm@16442
   789
val root_path       = add_path "/";
wenzelm@16442
   790
val absolute_path   = add_path "//";
wenzelm@16442
   791
wenzelm@16442
   792
fun local_path thy = thy |> root_path |> add_path (Context.theory_name thy);
wenzelm@16442
   793
wenzelm@6546
   794
wenzelm@16337
   795
(* hide names *)
wenzelm@386
   796
wenzelm@16442
   797
fun hide_classes b xs thy = thy |> map_tsig (Type.hide_classes b (map (intern_class thy) xs));
wenzelm@16368
   798
val hide_classes_i = map_tsig oo Type.hide_classes;
wenzelm@16442
   799
fun hide_types b xs thy = thy |> map_tsig (Type.hide_types b (map (intern_type thy) xs));
wenzelm@16368
   800
val hide_types_i = map_tsig oo Type.hide_types;
wenzelm@16442
   801
fun hide_consts b xs thy =
wenzelm@16941
   802
  thy |> map_consts (apfst (apfst (fold (NameSpace.hide b o intern_const thy) xs)));
wenzelm@16941
   803
val hide_consts_i = (map_consts o apfst o apfst) oo (fold o NameSpace.hide);
wenzelm@386
   804
clasohm@0
   805
end;