src/Pure/sign.ML
author clasohm
Thu, 08 Dec 1994 12:45:28 +0100
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parent 679 a682bbf70dc6
child 865 b38c67991122
permissions -rw-r--r--
replaced type_syn by pure_syn in Pure signature
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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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The abstract type "sg" of signatures.
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*)
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signature SIGN =
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sig
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  structure Symtab: SYMTAB
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  structure Syntax: SYNTAX
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  structure Type: TYPE
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  sharing Symtab = Type.Symtab
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  local open Type Syntax in
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    type sg
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    val rep_sg: sg ->
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      {tsig: type_sig,
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       const_tab: typ Symtab.table,
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       syn: syntax,
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       stamps: string ref list}
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    val subsig: sg * sg -> bool
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    val eq_sg: sg * sg -> bool
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    val is_draft: sg -> bool
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    val const_type: sg -> string -> typ option
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    val classes: sg -> class list
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    val subsort: sg -> sort * sort -> bool
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    val norm_sort: sg -> sort -> sort
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    val print_sg: sg -> unit
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    val pretty_sg: sg -> Pretty.T
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    val pprint_sg: sg -> pprint_args -> unit
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    val pretty_term: sg -> term -> Pretty.T
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    val pretty_typ: sg -> typ -> Pretty.T
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    val pretty_sort: sort -> Pretty.T
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    val string_of_term: sg -> term -> string
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    val string_of_typ: sg -> typ -> string
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    val pprint_term: sg -> term -> pprint_args -> unit
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    val pprint_typ: sg -> typ -> pprint_args -> unit
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    val certify_typ: sg -> typ -> typ
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    val certify_term: sg -> term -> term * typ * int
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    val read_typ: sg * (indexname -> sort option) -> string -> typ
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    val infer_types: sg -> (indexname -> typ option) ->
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      (indexname -> sort option) -> bool -> term list * typ ->
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      int * term * (indexname * typ) list
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    val add_classes: (class * class list) list -> sg -> sg
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    val add_classrel: (class * class) list -> sg -> sg
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    val add_defsort: sort -> sg -> sg
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    val add_types: (string * int * mixfix) list -> sg -> sg
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    val add_tyabbrs: (string * string list * string * mixfix) list -> sg -> sg
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    val add_tyabbrs_i: (string * string list * typ * mixfix) list -> sg -> sg
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    val add_arities: (string * sort list * sort) list -> sg -> sg
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    val add_consts: (string * string * mixfix) list -> sg -> sg
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    val add_consts_i: (string * typ * mixfix) list -> sg -> sg
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    val add_syntax: (string * string * mixfix) list -> sg -> sg
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    val add_syntax_i: (string * typ * mixfix) list -> sg -> sg
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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 -> sg -> sg
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    val add_trrules: xrule list -> sg -> sg
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    val add_name: string -> sg -> sg
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    val make_draft: sg -> sg
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    val merge: sg * sg -> sg
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    val pure: sg
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    val const_of_class: class -> string
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    val class_of_const: string -> class
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  end
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end;
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functor SignFun(structure Syntax: SYNTAX and Type: TYPE): SIGN =
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struct
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structure Symtab = Type.Symtab;
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structure Syntax = Syntax;
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structure BasicSyntax: BASIC_SYNTAX = Syntax;
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structure Pretty = Syntax.Pretty;
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structure Type = Type;
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open BasicSyntax Type;
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(** datatype sg **)
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(*the "ref" in stamps ensures that no two signatures are identical -- it is
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  impossible to forge a signature*)
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datatype sg =
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  Sg of {
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    tsig: type_sig,                 (*order-sorted signature of types*)
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    const_tab: typ Symtab.table,    (*types of constants*)
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    syn: Syntax.syntax,             (*syntax for parsing and printing*)
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    stamps: string ref list};       (*unique theory indentifier*)
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fun rep_sg (Sg args) = args;
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val tsig_of = #tsig o rep_sg;
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(* stamps *)
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fun is_draft (Sg {stamps = ref "#" :: _, ...}) = true
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  | is_draft _ = false;
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fun subsig (Sg {stamps = s1, ...}, Sg {stamps = s2, ...}) = s1 subset s2;
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fun eq_sg (Sg {stamps = s1, ...}, Sg {stamps = s2, ...}) = eq_set (s1, s2);
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(* consts *)
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fun const_type (Sg {const_tab, ...}) c =
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  Symtab.lookup (const_tab, c);
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(* classes and sorts *)
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val classes = #classes o Type.rep_tsig o tsig_of;
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val subsort = Type.subsort o tsig_of;
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val norm_sort = Type.norm_sort o tsig_of;
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fun pretty_sort [c] = Pretty.str c
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  | pretty_sort cs = Pretty.str_list "{" "}" cs;
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(** print signature **)
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val stamp_names = rev o map !;
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fun print_sg sg =
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  let
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    fun prt_typ syn ty = Pretty.quote (Syntax.pretty_typ syn ty);
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    fun pretty_subclass (cl, cls) = Pretty.block
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      [Pretty.str (cl ^ " <"), Pretty.brk 1, pretty_sort cls];
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    fun pretty_default cls = Pretty.block
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      [Pretty.str "default:", Pretty.brk 1, pretty_sort cls];
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    fun pretty_arg (ty, n) = Pretty.str (ty ^ " " ^ string_of_int n);
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    fun pretty_abbr syn (ty, (vs, rhs)) = Pretty.block
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      [prt_typ syn (Type (ty, map (fn v => TVar ((v, 0), [])) vs)),
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        Pretty.str " =", Pretty.brk 1, prt_typ syn rhs];
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    fun pretty_arity ty (cl, []) = Pretty.block
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          [Pretty.str (ty ^ " ::"), Pretty.brk 1, Pretty.str cl]
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      | pretty_arity ty (cl, srts) = Pretty.block
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          [Pretty.str (ty ^ " ::"), Pretty.brk 1,
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            Pretty.list "(" ")" (map pretty_sort srts),
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            Pretty.brk 1, Pretty.str cl];
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    fun pretty_coreg (ty, ars) = map (pretty_arity ty) ars;
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    fun pretty_const syn (c, ty) = Pretty.block
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      [Pretty.str (quote c ^ " ::"), Pretty.brk 1, prt_typ syn ty];
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    val Sg {tsig, const_tab, syn, stamps} = sg;
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    val {classes, subclass, default, args, abbrs, coreg} = rep_tsig tsig;
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  in
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    Pretty.writeln (Pretty.strs ("stamps:" :: stamp_names stamps));
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    Pretty.writeln (Pretty.strs ("classes:" :: classes));
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    Pretty.writeln (Pretty.big_list "subclass:" (map pretty_subclass subclass));
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    Pretty.writeln (pretty_default default);
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    Pretty.writeln (Pretty.big_list "types:" (map pretty_arg args));
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    Pretty.writeln (Pretty.big_list "abbrs:" (map (pretty_abbr syn) abbrs));
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    Pretty.writeln (Pretty.big_list "coreg:" (flat (map pretty_coreg coreg)));
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    Pretty.writeln (Pretty.big_list "consts:"
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      (map (pretty_const syn) (Symtab.dest const_tab)))
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  end;
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fun pretty_sg (Sg {stamps, ...}) =
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  Pretty.str_list "{" "}" (stamp_names stamps);
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val pprint_sg = Pretty.pprint o pretty_sg;
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(** pretty printing of terms and types **)
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fun pretty_term (Sg {syn, ...}) = Syntax.pretty_term syn;
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fun pretty_typ (Sg {syn, ...}) = Syntax.pretty_typ syn;
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fun string_of_term (Sg {syn, ...}) = Syntax.string_of_term syn;
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fun string_of_typ (Sg {syn, ...}) = Syntax.string_of_typ syn;
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fun pprint_term sg = Pretty.pprint o Pretty.quote o (pretty_term sg);
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fun pprint_typ sg = Pretty.pprint o Pretty.quote o (pretty_typ sg);
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(** read types **)  (*exception ERROR*)
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fun err_in_type s =
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  error ("The error(s) above occurred in type " ^ quote s);
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fun read_raw_typ syn tsig sort_of str =
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  Syntax.read_typ syn (fn x => if_none (sort_of x) (defaultS tsig)) str
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    handle ERROR => err_in_type str;
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(*read and certify typ wrt a signature*)
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fun read_typ (Sg {tsig, syn, ...}, sort_of) str =
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  cert_typ tsig (read_raw_typ syn tsig sort_of str)
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    handle TYPE (msg, _, _) => (writeln msg; err_in_type str);
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(** certify types and terms **)   (*exception TYPE*)
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fun certify_typ (Sg {tsig, ...}) ty = cert_typ tsig ty;
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fun mapfilt_atoms f (Abs (_, _, t)) = mapfilt_atoms f t
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  | mapfilt_atoms f (t $ u) = mapfilt_atoms f t @ mapfilt_atoms f u
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  | mapfilt_atoms f a = (case f a of Some y => [y] | None => []);
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fun certify_term (sg as Sg {tsig, ...}) tm =
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  let
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    fun valid_const a T =
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      (case const_type sg a of
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        Some U => typ_instance (tsig, T, U)
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      | _ => false);
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    fun atom_err (Const (a, T)) =
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          if valid_const a T then None
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          else Some ("Illegal type for constant " ^ quote a ^ " :: " ^
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            quote (string_of_typ sg T))
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      | atom_err (Var ((x, i), _)) =
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          if i < 0 then Some ("Negative index for Var " ^ quote x) else None
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      | atom_err _ = None;
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    val norm_tm =
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      (case it_term_types (typ_errors tsig) (tm, []) of
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        [] => map_term_types (norm_typ tsig) tm
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      | errs => raise_type (cat_lines errs) [] [tm]);
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  in
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    (case mapfilt_atoms atom_err norm_tm of
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      [] => (norm_tm, type_of norm_tm, maxidx_of_term norm_tm)
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    | errs => raise_type (cat_lines errs) [] [norm_tm])
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  end;
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(** infer_types **)         (*exception ERROR*)
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fun infer_types sg types sorts print_msg (ts, T) =
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  let
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    val Sg {tsig, ...} = sg;
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    val show_typ = string_of_typ sg;
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    val show_term = string_of_term sg;
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    fun term_err [] = ""
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      | term_err [t] = "\nInvolving this term:\n" ^ show_term t
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      | term_err ts = 
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          "\nInvolving these terms:\n" ^ cat_lines (map show_term ts);
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    fun exn_type_msg (msg, Ts, ts) =
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	msg ^ "\nType checking error: " ^ msg ^ "\n" ^
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	cat_lines (map show_typ Ts) ^ term_err ts ^ "\n";
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    val T' = certify_typ sg T
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      handle TYPE arg => error (exn_type_msg arg);
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    val ct = const_type sg;
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    fun process_terms (t::ts) (idx, infrd_t, tye) msg n =
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         let fun mk_some (x, y) = (Some x, Some y);
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             val ((infrd_t', tye'), msg') = 
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              (mk_some (Type.infer_types (tsig, ct, types, sorts, T', t)), msg)
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              handle TYPE arg => ((None, None), exn_type_msg arg)
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             val old_show_brackets = !show_brackets;
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             val _ = (show_brackets := true);
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             val msg'' = 
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               if is_none idx then (if is_none infrd_t' then msg' else "")
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               else if is_none infrd_t' then "" 
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               else (if msg' = "" then 
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                "Error: More than one term is type correct:\n" ^
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                (show_term (the infrd_t)) else msg') ^ "\n" ^ 
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                (show_term (the infrd_t')) ^ "\n";
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             val _ = (show_brackets := old_show_brackets);
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         in if is_none infrd_t' then
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              process_terms ts (idx, infrd_t, tye) msg'' (n+1)
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            else
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              process_terms ts (Some n, infrd_t', tye') msg'' (n+1)
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         end
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      | process_terms [] (idx, infrd_t, tye) msg _ = 
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          if msg = "" then (the idx, the infrd_t, the tye) 
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          else error msg;
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    val (idx, infrd_t, tye) = process_terms ts (None, None, None) "" 0;
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  in if print_msg andalso length ts > 1 then
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       writeln "Fortunately, only one parse tree is type correct.\n\
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         \It helps (speed!) if you disambiguate your grammar or your input."
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     else ();
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     (idx, infrd_t, tye)
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  end;
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(** extend signature **)    (*exception ERROR*)
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(** signature extension functions **)  (*exception ERROR*)
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fun decls_of name_of mfixs =
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  map (fn (x, y, mx) => (name_of x mx, y)) mfixs;
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(* add default sort *)
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fun ext_defsort (syn, tsig, ctab) defsort =
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  (syn, ext_tsig_defsort tsig defsort, ctab);
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(* add type constructors *)
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fun ext_types (syn, tsig, ctab) types =
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  (Syntax.extend_type_gram syn types,
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    ext_tsig_types tsig (decls_of Syntax.type_name types),
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    ctab);
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(* add type abbreviations *)
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fun read_abbr syn tsig (t, vs, rhs_src) =
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  (t, vs, read_raw_typ syn tsig (K None) rhs_src)
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    handle ERROR => error ("in type abbreviation " ^ t);
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fun ext_abbrs rd_abbr (syn, tsig, ctab) abbrs =
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  let
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diff changeset
   336
    fun mfix_of (t, vs, _, mx) = (t, length vs, mx);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   337
    val syn1 = Syntax.extend_type_gram syn (map mfix_of abbrs);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   338
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   339
    fun decl_of (t, vs, rhs, mx) =
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   340
      rd_abbr syn1 tsig (Syntax.type_name t mx, vs, rhs);
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   341
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   342
    (syn1, ext_tsig_abbrs tsig (map decl_of abbrs), ctab)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   343
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   344
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   345
val ext_tyabbrs_i = ext_abbrs (K (K I));
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   346
val ext_tyabbrs = ext_abbrs read_abbr;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   347
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   348
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   349
(* add type arities *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   350
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   351
fun ext_arities (syn, tsig, ctab) arities =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   352
  let
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   353
    val tsig1 = ext_tsig_arities tsig arities;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   354
    val log_types = logical_types tsig1;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   355
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   356
    (Syntax.extend_log_types syn log_types, tsig1, ctab)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   357
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   358
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   359
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   360
(* add term constants and syntax *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   361
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   362
fun err_in_const c =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   363
  error ("in declaration of constant " ^ quote c);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   364
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   365
fun err_dup_consts cs =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   366
  error ("Duplicate declaration of constant(s) " ^ commas_quote cs);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   367
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   368
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   369
fun read_const syn tsig (c, ty_src, mx) =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   370
  (c, read_raw_typ syn tsig (K None) ty_src, mx)
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   371
    handle ERROR => err_in_const (Syntax.const_name c mx);
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   372
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   373
fun ext_cnsts rd_const syn_only (syn, tsig, ctab) raw_consts =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   374
  let
620
f787eb061618 exported pretty_sort;
wenzelm
parents: 583
diff changeset
   375
    fun prep_const (c, ty, mx) = (c, varifyT (cert_typ tsig (no_tvars ty)), mx)
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   376
      handle TYPE (msg, _, _) => (writeln msg; err_in_const (Syntax.const_name c mx));
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   377
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   378
    val consts = map (prep_const o rd_const syn tsig) raw_consts;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   379
    val decls =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   380
      if syn_only then []
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   381
      else filter_out (equal "" o fst) (decls_of Syntax.const_name consts);
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   382
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   383
    (Syntax.extend_const_gram syn consts, tsig,
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   384
      Symtab.extend_new (ctab, decls)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   385
        handle Symtab.DUPS cs => err_dup_consts cs)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   386
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   387
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   388
val ext_consts_i = ext_cnsts (K (K I)) false;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   389
val ext_consts = ext_cnsts read_const false;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   390
val ext_syntax_i = ext_cnsts (K (K I)) true;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   391
val ext_syntax = ext_cnsts read_const true;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   392
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   393
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   394
(* add type classes *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   395
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   396
fun const_of_class c = c ^ "_class";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   397
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   398
fun class_of_const c_class =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   399
  let
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   400
    val c = implode (take (size c_class - 6, explode c_class));
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   401
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   402
    if const_of_class c = c_class then c
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   403
    else raise_term ("class_of_const: bad name " ^ quote c_class) []
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   404
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   405
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   406
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   407
fun ext_classes (syn, tsig, ctab) classes =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   408
  let
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   409
    val names = map fst classes;
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   410
    val consts =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   411
      map (fn c => (const_of_class c, a_itselfT --> propT, NoSyn)) names;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   412
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   413
    ext_consts_i
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   414
      (Syntax.extend_consts syn names, ext_tsig_classes tsig classes, ctab)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   415
      consts
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   416
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   417
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   418
421
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   419
(* add to subclass relation *)
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   420
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   421
fun ext_classrel (syn, tsig, ctab) pairs =
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   422
  (syn, ext_tsig_subclass tsig pairs, ctab);
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   423
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   424
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   425
(* add syntactic translations *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   426
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   427
fun ext_trfuns (syn, tsig, ctab) trfuns =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   428
  (Syntax.extend_trfuns syn trfuns, tsig, ctab);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   429
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   430
fun ext_trrules (syn, tsig, ctab) xrules =
623
ca9f5dbab880 added print_msg;
clasohm
parents: 620
diff changeset
   431
  (Syntax.extend_trrules syn
ca9f5dbab880 added print_msg;
clasohm
parents: 620
diff changeset
   432
  (infer_types (Sg {tsig = tsig, const_tab = ctab, syn = syn, 
ca9f5dbab880 added print_msg;
clasohm
parents: 620
diff changeset
   433
                   stamps = [ref "#"]}) (K None) (K None)) xrules, tsig, ctab);
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   434
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   435
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   436
(* build signature *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   437
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   438
fun ext_stamps stamps name =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   439
  let
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   440
    val stmps = (case stamps of ref "#" :: ss => ss | ss => ss);
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   441
  in
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   442
    if exists (equal name o !) stmps then
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   443
      error ("Theory already contains a " ^ quote name ^ " component")
402
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   444
    else ref name :: stmps
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   445
  end;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   446
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   447
fun make_sign (syn, tsig, ctab) stamps name =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   448
  Sg {tsig = tsig, const_tab = ctab, syn = syn,
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   449
    stamps = ext_stamps stamps name};
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   450
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   451
fun extend_sign extfun name decls (Sg {tsig, const_tab, syn, stamps}) =
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   452
  make_sign (extfun (syn, tsig, const_tab) decls) stamps name;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   453
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   454
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   455
(* the external interfaces *)
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   456
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   457
val add_classes   = extend_sign ext_classes "#";
421
95e1d4faa863 added add_classrel;
wenzelm
parents: 418
diff changeset
   458
val add_classrel  = extend_sign ext_classrel "#";
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   459
val add_defsort   = extend_sign ext_defsort "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   460
val add_types     = extend_sign ext_types "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   461
val add_tyabbrs   = extend_sign ext_tyabbrs "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   462
val add_tyabbrs_i = extend_sign ext_tyabbrs_i "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   463
val add_arities   = extend_sign ext_arities "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   464
val add_consts    = extend_sign ext_consts "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   465
val add_consts_i  = extend_sign ext_consts_i "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   466
val add_syntax    = extend_sign ext_syntax "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   467
val add_syntax_i  = extend_sign ext_syntax_i "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   468
val add_trfuns    = extend_sign ext_trfuns "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   469
val add_trrules   = extend_sign ext_trrules "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   470
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   471
fun add_name name sg = extend_sign K name () sg;
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   472
val make_draft = add_name "#";
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   473
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   474
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   475
620
f787eb061618 exported pretty_sort;
wenzelm
parents: 583
diff changeset
   476
(** merge signatures **)    (*exception TERM*) (*exception ERROR (* FIXME *)*)
143
f8152ca36cd5 Sign.extend: Syntax.extend now called with read_ty;
wenzelm
parents: 19
diff changeset
   477
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   478
fun merge (sg1, sg2) =
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   479
  if subsig (sg2, sg1) then sg1
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   480
  else if subsig (sg1, sg2) then sg2
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   481
  else if is_draft sg1 orelse is_draft sg2 then
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   482
    raise_term "Illegal merge of draft signatures" []
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   483
  else
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   484
    (*neither is union already; must form union*)
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   485
    let
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   486
      val Sg {tsig = tsig1, const_tab = const_tab1, syn = syn1,
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   487
        stamps = stamps1} = sg1;
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   488
      val Sg {tsig = tsig2, const_tab = const_tab2, syn = syn2,
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   489
        stamps = stamps2} = sg2;
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   490
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   491
402
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   492
      val stamps = merge_rev_lists stamps1 stamps2;
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   493
      val _ =
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   494
        (case duplicates (stamp_names stamps) of
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   495
          [] => ()
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   496
        | dups => raise_term ("Attempt to merge different versions of theories "
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   497
            ^ commas_quote dups) []);
16a8fe4f2250 added subsort, norm_sort, classes;
wenzelm
parents: 386
diff changeset
   498
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   499
      val tsig = merge_tsigs (tsig1, tsig2);
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   500
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   501
      val const_tab = Symtab.merge (op =) (const_tab1, const_tab2)
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   502
        handle Symtab.DUPS cs =>
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   503
          raise_term ("Incompatible types for constant(s) " ^ commas_quote cs) [];
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   504
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   505
      val syn = Syntax.merge_syntaxes syn1 syn2;
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   506
    in
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   507
      Sg {tsig = tsig, const_tab = const_tab, syn = syn, stamps = stamps}
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   508
    end;
143
f8152ca36cd5 Sign.extend: Syntax.extend now called with read_ty;
wenzelm
parents: 19
diff changeset
   509
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   510
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   511
251
c9b984c0a674 major cleanup;
wenzelm
parents: 229
diff changeset
   512
(** the Pure signature **)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   513
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   514
val pure =
763
d5a626aacdd3 replaced type_syn by pure_syn in Pure signature
clasohm
parents: 679
diff changeset
   515
  make_sign (Syntax.pure_syn, tsig0, Symtab.null) [] "#"
410
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   516
  |> add_types
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   517
   (("fun", 2, NoSyn) ::
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   518
    ("prop", 0, NoSyn) ::
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   519
    ("itself", 1, NoSyn) ::
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   520
    Syntax.pure_types)
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   521
  |> add_classes [(logicC, [])]
410
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   522
  |> add_defsort logicS
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   523
  |> add_arities
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   524
   [("fun", [logicS, logicS], logicS),
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   525
    ("prop", [], logicS),
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   526
    ("itself", [logicS], logicS)]
562
e9572d03b724 added pretty_sg;
wenzelm
parents: 421
diff changeset
   527
  |> add_syntax Syntax.pure_syntax
410
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   528
  |> add_trfuns Syntax.pure_trfuns
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   529
  |> add_consts
386
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   530
   [("==", "['a::{}, 'a] => prop", Mixfix ("(_ ==/ _)", [3, 2], 2)),
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   531
    ("=?=", "['a::{}, 'a] => prop", Mixfix ("(_ =?=/ _)", [3, 2], 2)),
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   532
    ("==>", "[prop, prop] => prop", Mixfix ("(_ ==>/ _)", [2, 1], 1)),
e9ba9f7e2542 added const_type: sg -> typ option;
wenzelm
parents: 277
diff changeset
   533
    ("all", "('a => prop) => prop", Binder ("!!", 0)),
573
2fa5ef27bd0a removed constant _constrain from Pure sig;
wenzelm
parents: 562
diff changeset
   534
    ("TYPE", "'a itself", NoSyn)]
410
c8171ee32744 replaced infix also by |>
wenzelm
parents: 402
diff changeset
   535
  |> add_name "Pure";
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   536
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   537
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   538
end;