author | paulson |
Fri, 16 Feb 1996 12:34:18 +0100 | |
changeset 1501 | bb7f99a0a6f0 |
parent 1494 | 22f67e796445 |
child 1576 | af8f43f742a0 |
permissions | -rw-r--r-- |
19 | 1 |
(* Title: Pure/sign.ML |
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ID: $Id$ |
251 | 3 |
Author: Lawrence C Paulson and Markus Wenzel |
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|
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The abstract type "sg" of signatures. |
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*) |
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||
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signature SIGN = |
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sig |
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type sg |
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val rep_sg: sg -> {tsig: Type.type_sig, |
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const_tab: typ Symtab.table, |
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syn: Syntax.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 same_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 nodup_Vars: term -> unit |
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val norm_sort: sg -> sort -> sort |
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val nonempty_sort: sg -> sort list -> sort -> bool |
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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 exn_type_msg: sg -> string * typ list * term list -> string |
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val infer_types: sg -> (indexname -> typ option) -> |
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(indexname -> sort option) -> string list -> bool |
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-> term list * typ -> 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: (string * string) trrule list -> sg -> sg |
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val add_trrules_i: ast trrule 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 proto_pure: sg |
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val pure: sg |
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val cpure: 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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structure Sign : SIGN = |
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struct |
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local open Type Syntax in |
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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.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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(* test if same theory names are contained in signatures' stamps, |
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i.e. if signatures belong to same theory but not necessarily to the same |
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version of it*) |
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fun same_sg (Sg {stamps = s1, ...}, Sg {stamps = s2, ...}) = |
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eq_set (pairself (map (op !)) (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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val nonempty_sort = Type.nonempty_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 :: |
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Pretty.commas (map Pretty.str 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_ty (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_arities (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, tycons, abbrs, arities} = 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:" |
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(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_ty tycons)); |
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Pretty.writeln (Pretty.big_list "abbrs:" (map (pretty_abbr syn) abbrs)); |
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Pretty.writeln (Pretty.big_list "arities:" |
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(flat (map pretty_arities arities))); |
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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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added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
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fun pretty_term (Sg {syn, stamps, ...}) = |
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added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
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let val curried = "CPure" mem (map ! stamps); |
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added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
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in Syntax.pretty_term curried syn end; |
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
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diff
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fun pretty_typ (Sg {syn, ...}) = Syntax.pretty_typ syn; |
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fun string_of_term (Sg {syn, stamps, ...}) = |
922
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
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let val curried = "CPure" mem (map ! stamps); |
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
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in Syntax.string_of_term curried syn end; |
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
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diff
changeset
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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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parents:
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diff
changeset
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(* check for duplicate TVars with distinct sorts *) |
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parents:
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diff
changeset
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fun nodup_TVars(tvars,T) = (case T of |
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diff
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Type(_,Ts) => foldl nodup_TVars (tvars,Ts) |
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| TFree _ => tvars |
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| TVar(v as (a,S)) => |
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(case assoc(tvars,a) of |
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Some(S') => if S=S' then tvars |
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else raise_type |
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changeset
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("Type variable "^Syntax.string_of_vname a^ |
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changeset
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"has two distinct sorts") [TVar(a,S'),T] [] |
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parents:
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diff
changeset
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233 |
| None => v::tvars)); |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
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changeset
|
234 |
|
22f67e796445
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nipkow
parents:
1460
diff
changeset
|
235 |
(* check for duplicate Vars with distinct types *) |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
236 |
fun nodup_Vars tm = |
22f67e796445
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parents:
1460
diff
changeset
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237 |
let fun nodups vars tvars tm = (case tm of |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
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diff
changeset
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238 |
Const(c,T) => (vars, nodup_TVars(tvars,T)) |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
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changeset
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239 |
| Free(a,T) => (vars, nodup_TVars(tvars,T)) |
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added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
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changeset
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240 |
| Var(v as (ixn,T)) => |
22f67e796445
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diff
changeset
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241 |
(case assoc(vars,ixn) of |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
1460
diff
changeset
|
242 |
Some(T') => if T=T' then (vars,nodup_TVars(tvars,T)) |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
1460
diff
changeset
|
243 |
else raise_type |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
244 |
("Variable "^Syntax.string_of_vname ixn^ |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
245 |
"has two distinct types") [T',T] [] |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
246 |
| None => (v::vars,tvars)) |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
247 |
| Bound _ => (vars,tvars) |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
248 |
| Abs(_,T,t) => nodups vars (nodup_TVars(tvars,T)) t |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
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parents:
1460
diff
changeset
|
249 |
| s$t => let val (vars',tvars') = nodups vars tvars s |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
250 |
in nodups vars' tvars' t end); |
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
251 |
in nodups [] [] tm; () end; |
251 | 252 |
|
386 | 253 |
fun mapfilt_atoms f (Abs (_, _, t)) = mapfilt_atoms f t |
254 |
| mapfilt_atoms f (t $ u) = mapfilt_atoms f t @ mapfilt_atoms f u |
|
255 |
| mapfilt_atoms f a = (case f a of Some y => [y] | None => []); |
|
0 | 256 |
|
386 | 257 |
fun certify_term (sg as Sg {tsig, ...}) tm = |
251 | 258 |
let |
259 |
fun valid_const a T = |
|
386 | 260 |
(case const_type sg a of |
251 | 261 |
Some U => typ_instance (tsig, T, U) |
262 |
| _ => false); |
|
169 | 263 |
|
251 | 264 |
fun atom_err (Const (a, T)) = |
265 |
if valid_const a T then None |
|
266 |
else Some ("Illegal type for constant " ^ quote a ^ " :: " ^ |
|
267 |
quote (string_of_typ sg T)) |
|
268 |
| atom_err (Var ((x, i), _)) = |
|
269 |
if i < 0 then Some ("Negative index for Var " ^ quote x) else None |
|
270 |
| atom_err _ = None; |
|
271 |
||
272 |
val norm_tm = |
|
273 |
(case it_term_types (typ_errors tsig) (tm, []) of |
|
274 |
[] => map_term_types (norm_typ tsig) tm |
|
275 |
| errs => raise_type (cat_lines errs) [] [tm]); |
|
1494
22f67e796445
added nodup_Vars check in cterm_of. Prevents same var with distinct types.
nipkow
parents:
1460
diff
changeset
|
276 |
val _ = nodup_Vars norm_tm; |
251 | 277 |
in |
386 | 278 |
(case mapfilt_atoms atom_err norm_tm of |
251 | 279 |
[] => (norm_tm, type_of norm_tm, maxidx_of_term norm_tm) |
280 |
| errs => raise_type (cat_lines errs) [] [norm_tm]) |
|
281 |
end; |
|
282 |
||
283 |
||
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
284 |
(*Package error messages from type checking*) |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
285 |
fun exn_type_msg sg (msg, Ts, ts) = |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
286 |
let val show_typ = string_of_typ sg |
1460 | 287 |
val show_term = string_of_term sg |
288 |
fun term_err [] = "" |
|
289 |
| term_err [t] = "\nInvolving this term:\n" ^ show_term t |
|
290 |
| term_err ts = |
|
291 |
"\nInvolving these terms:\n" ^ cat_lines (map show_term ts); |
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1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
292 |
in "\nType checking error: " ^ msg ^ "\n" ^ |
1460 | 293 |
cat_lines (map show_typ Ts) ^ term_err ts ^ "\n" |
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
294 |
end; |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
295 |
|
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
296 |
|
251 | 297 |
|
583 | 298 |
(** infer_types **) (*exception ERROR*) |
251 | 299 |
|
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
300 |
(*ts is the list of alternative parses; only one is hoped to be type-correct. |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
301 |
T is the expected type for the correct term. |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
302 |
Other standard arguments: |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
303 |
types is a partial map from indexnames to types (constrains Free, Var). |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
304 |
sorts is a partial map from indexnames to sorts (constrains TFree, TVar). |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
305 |
used is the list of already used type variables. |
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
306 |
If freeze then internal TVars are turned into TFrees, else TVars.*) |
959 | 307 |
fun infer_types sg types sorts used freeze (ts, T) = |
251 | 308 |
let |
562 | 309 |
val Sg {tsig, ...} = sg; |
169 | 310 |
|
1393
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exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
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diff
changeset
|
311 |
val T' = certify_typ sg T handle TYPE arg => error (exn_type_msg sg arg); |
623 | 312 |
|
313 |
val ct = const_type sg; |
|
314 |
||
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
315 |
fun warn() = |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
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parents:
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diff
changeset
|
316 |
if length ts > 1 andalso length ts <= !Syntax.ambiguity_level |
9e10962866b0
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parents:
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diff
changeset
|
317 |
then (*no warning shown yet*) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
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diff
changeset
|
318 |
writeln "Warning: Currently parsed input \ |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
319 |
\produces more than one parse tree.\n\ |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
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diff
changeset
|
320 |
\For more information lower Syntax.ambiguity_level." |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
321 |
else (); |
623 | 322 |
|
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
323 |
datatype result = One of int * term * (indexname * typ) list |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
324 |
| Errs of (string * typ list * term list)list |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
325 |
| Ambigs of term list; |
623 | 326 |
|
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
327 |
fun process_term(res,(t,i)) = |
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
328 |
let val ([u],tye) = |
1460 | 329 |
Type.infer_types(tsig,ct,types,sorts,used,freeze,[T'],[t]) |
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
330 |
in case res of |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
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parents:
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diff
changeset
|
331 |
One(_,t0,_) => Ambigs([u,t0]) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
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parents:
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diff
changeset
|
332 |
| Errs _ => One(i,u,tye) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
333 |
| Ambigs(us) => Ambigs(u::us) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
334 |
end |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
335 |
handle TYPE arg => (case res of Errs(errs) => Errs(arg::errs) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
336 |
| _ => res); |
623 | 337 |
|
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
338 |
in case foldl process_term (Errs[], ts ~~ (0 upto (length ts - 1))) of |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
339 |
One(res) => |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
340 |
(if length ts > !Syntax.ambiguity_level |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
341 |
then writeln "Fortunately, only one parse tree is type correct.\n\ |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
342 |
\It helps (speed!) if you disambiguate your grammar or your input." |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
343 |
else (); |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
344 |
res) |
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
345 |
| Errs(errs) => (warn(); error(cat_lines(map (exn_type_msg sg) errs))) |
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
346 |
| Ambigs(us) => |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
347 |
(warn(); |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
348 |
let val old_show_brackets = !show_brackets |
1178 | 349 |
val dummy = show_brackets := true; |
1393
73b6b003c6ca
exports exn_type_msg for error messages. Calls new infer_types.
paulson
parents:
1241
diff
changeset
|
350 |
val errs = cat_lines(map (string_of_term sg) us) |
952
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
351 |
in show_brackets := old_show_brackets; |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
352 |
error("Error: More than one term is type correct:\n" ^ errs) |
9e10962866b0
Removed an old bug which made some simultaneous instantiations fail if they
nipkow
parents:
949
diff
changeset
|
353 |
end) |
623 | 354 |
end; |
251 | 355 |
|
356 |
||
623 | 357 |
(** extend signature **) (*exception ERROR*) |
358 |
||
620 | 359 |
(** signature extension functions **) (*exception ERROR*) |
386 | 360 |
|
361 |
fun decls_of name_of mfixs = |
|
362 |
map (fn (x, y, mx) => (name_of x mx, y)) mfixs; |
|
363 |
||
364 |
||
365 |
(* add default sort *) |
|
366 |
||
367 |
fun ext_defsort (syn, tsig, ctab) defsort = |
|
368 |
(syn, ext_tsig_defsort tsig defsort, ctab); |
|
369 |
||
370 |
||
371 |
(* add type constructors *) |
|
372 |
||
373 |
fun ext_types (syn, tsig, ctab) types = |
|
374 |
(Syntax.extend_type_gram syn types, |
|
562 | 375 |
ext_tsig_types tsig (decls_of Syntax.type_name types), |
386 | 376 |
ctab); |
377 |
||
378 |
||
379 |
(* add type abbreviations *) |
|
380 |
||
381 |
fun read_abbr syn tsig (t, vs, rhs_src) = |
|
382 |
(t, vs, read_raw_typ syn tsig (K None) rhs_src) |
|
383 |
handle ERROR => error ("in type abbreviation " ^ t); |
|
384 |
||
385 |
fun ext_abbrs rd_abbr (syn, tsig, ctab) abbrs = |
|
386 |
let |
|
387 |
fun mfix_of (t, vs, _, mx) = (t, length vs, mx); |
|
388 |
val syn1 = Syntax.extend_type_gram syn (map mfix_of abbrs); |
|
389 |
||
390 |
fun decl_of (t, vs, rhs, mx) = |
|
562 | 391 |
rd_abbr syn1 tsig (Syntax.type_name t mx, vs, rhs); |
386 | 392 |
in |
393 |
(syn1, ext_tsig_abbrs tsig (map decl_of abbrs), ctab) |
|
394 |
end; |
|
395 |
||
396 |
val ext_tyabbrs_i = ext_abbrs (K (K I)); |
|
397 |
val ext_tyabbrs = ext_abbrs read_abbr; |
|
398 |
||
399 |
||
400 |
(* add type arities *) |
|
401 |
||
402 |
fun ext_arities (syn, tsig, ctab) arities = |
|
403 |
let |
|
404 |
val tsig1 = ext_tsig_arities tsig arities; |
|
405 |
val log_types = logical_types tsig1; |
|
406 |
in |
|
407 |
(Syntax.extend_log_types syn log_types, tsig1, ctab) |
|
408 |
end; |
|
409 |
||
410 |
||
411 |
(* add term constants and syntax *) |
|
412 |
||
413 |
fun err_in_const c = |
|
414 |
error ("in declaration of constant " ^ quote c); |
|
415 |
||
416 |
fun err_dup_consts cs = |
|
417 |
error ("Duplicate declaration of constant(s) " ^ commas_quote cs); |
|
418 |
||
251 | 419 |
|
386 | 420 |
fun read_const syn tsig (c, ty_src, mx) = |
421 |
(c, read_raw_typ syn tsig (K None) ty_src, mx) |
|
562 | 422 |
handle ERROR => err_in_const (Syntax.const_name c mx); |
386 | 423 |
|
424 |
fun ext_cnsts rd_const syn_only (syn, tsig, ctab) raw_consts = |
|
425 |
let |
|
1414
036e072b215a
"prep_const" now calls compress_type to ensure sharing among
paulson
parents:
1393
diff
changeset
|
426 |
fun prep_const (c, ty, mx) = |
1460 | 427 |
(c, |
428 |
compress_type (varifyT (cert_typ tsig (no_tvars ty))), |
|
429 |
mx) |
|
562 | 430 |
handle TYPE (msg, _, _) => (writeln msg; err_in_const (Syntax.const_name c mx)); |
386 | 431 |
|
432 |
val consts = map (prep_const o rd_const syn tsig) raw_consts; |
|
433 |
val decls = |
|
434 |
if syn_only then [] |
|
562 | 435 |
else filter_out (equal "" o fst) (decls_of Syntax.const_name consts); |
386 | 436 |
in |
437 |
(Syntax.extend_const_gram syn consts, tsig, |
|
438 |
Symtab.extend_new (ctab, decls) |
|
439 |
handle Symtab.DUPS cs => err_dup_consts cs) |
|
440 |
end; |
|
441 |
||
442 |
val ext_consts_i = ext_cnsts (K (K I)) false; |
|
443 |
val ext_consts = ext_cnsts read_const false; |
|
444 |
val ext_syntax_i = ext_cnsts (K (K I)) true; |
|
445 |
val ext_syntax = ext_cnsts read_const true; |
|
446 |
||
447 |
||
448 |
(* add type classes *) |
|
449 |
||
450 |
fun const_of_class c = c ^ "_class"; |
|
451 |
||
452 |
fun class_of_const c_class = |
|
453 |
let |
|
454 |
val c = implode (take (size c_class - 6, explode c_class)); |
|
455 |
in |
|
456 |
if const_of_class c = c_class then c |
|
457 |
else raise_term ("class_of_const: bad name " ^ quote c_class) [] |
|
458 |
end; |
|
459 |
||
460 |
||
461 |
fun ext_classes (syn, tsig, ctab) classes = |
|
462 |
let |
|
562 | 463 |
val names = map fst classes; |
386 | 464 |
val consts = |
465 |
map (fn c => (const_of_class c, a_itselfT --> propT, NoSyn)) names; |
|
466 |
in |
|
467 |
ext_consts_i |
|
468 |
(Syntax.extend_consts syn names, ext_tsig_classes tsig classes, ctab) |
|
469 |
consts |
|
470 |
end; |
|
471 |
||
472 |
||
421 | 473 |
(* add to subclass relation *) |
474 |
||
475 |
fun ext_classrel (syn, tsig, ctab) pairs = |
|
476 |
(syn, ext_tsig_subclass tsig pairs, ctab); |
|
477 |
||
478 |
||
1159 | 479 |
(* add to syntax *) |
386 | 480 |
|
1159 | 481 |
fun ext_syn extfun (syn, tsig, ctab) args = |
482 |
(extfun syn args, tsig, ctab); |
|
386 | 483 |
|
484 |
||
485 |
(* build signature *) |
|
486 |
||
487 |
fun ext_stamps stamps name = |
|
488 |
let |
|
489 |
val stmps = (case stamps of ref "#" :: ss => ss | ss => ss); |
|
490 |
in |
|
491 |
if exists (equal name o !) stmps then |
|
492 |
error ("Theory already contains a " ^ quote name ^ " component") |
|
402 | 493 |
else ref name :: stmps |
386 | 494 |
end; |
495 |
||
496 |
fun make_sign (syn, tsig, ctab) stamps name = |
|
497 |
Sg {tsig = tsig, const_tab = ctab, syn = syn, |
|
498 |
stamps = ext_stamps stamps name}; |
|
499 |
||
500 |
fun extend_sign extfun name decls (Sg {tsig, const_tab, syn, stamps}) = |
|
501 |
make_sign (extfun (syn, tsig, const_tab) decls) stamps name; |
|
502 |
||
503 |
||
504 |
(* the external interfaces *) |
|
505 |
||
506 |
val add_classes = extend_sign ext_classes "#"; |
|
421 | 507 |
val add_classrel = extend_sign ext_classrel "#"; |
386 | 508 |
val add_defsort = extend_sign ext_defsort "#"; |
509 |
val add_types = extend_sign ext_types "#"; |
|
510 |
val add_tyabbrs = extend_sign ext_tyabbrs "#"; |
|
511 |
val add_tyabbrs_i = extend_sign ext_tyabbrs_i "#"; |
|
512 |
val add_arities = extend_sign ext_arities "#"; |
|
513 |
val add_consts = extend_sign ext_consts "#"; |
|
514 |
val add_consts_i = extend_sign ext_consts_i "#"; |
|
515 |
val add_syntax = extend_sign ext_syntax "#"; |
|
516 |
val add_syntax_i = extend_sign ext_syntax_i "#"; |
|
1159 | 517 |
val add_trfuns = extend_sign (ext_syn Syntax.extend_trfuns) "#"; |
518 |
val add_trrules = extend_sign (ext_syn Syntax.extend_trrules) "#"; |
|
519 |
val add_trrules_i = extend_sign (ext_syn Syntax.extend_trrules_i) "#"; |
|
386 | 520 |
|
521 |
fun add_name name sg = extend_sign K name () sg; |
|
522 |
val make_draft = add_name "#"; |
|
523 |
||
524 |
||
525 |
||
620 | 526 |
(** merge signatures **) (*exception TERM*) (*exception ERROR (* FIXME *)*) |
143 | 527 |
|
251 | 528 |
fun merge (sg1, sg2) = |
529 |
if subsig (sg2, sg1) then sg1 |
|
530 |
else if subsig (sg1, sg2) then sg2 |
|
386 | 531 |
else if is_draft sg1 orelse is_draft sg2 then |
532 |
raise_term "Illegal merge of draft signatures" [] |
|
251 | 533 |
else |
534 |
(*neither is union already; must form union*) |
|
535 |
let |
|
536 |
val Sg {tsig = tsig1, const_tab = const_tab1, syn = syn1, |
|
537 |
stamps = stamps1} = sg1; |
|
538 |
val Sg {tsig = tsig2, const_tab = const_tab2, syn = syn2, |
|
539 |
stamps = stamps2} = sg2; |
|
540 |
||
386 | 541 |
|
402 | 542 |
val stamps = merge_rev_lists stamps1 stamps2; |
543 |
val _ = |
|
544 |
(case duplicates (stamp_names stamps) of |
|
545 |
[] => () |
|
546 |
| dups => raise_term ("Attempt to merge different versions of theories " |
|
547 |
^ commas_quote dups) []); |
|
548 |
||
251 | 549 |
val tsig = merge_tsigs (tsig1, tsig2); |
550 |
||
551 |
val const_tab = Symtab.merge (op =) (const_tab1, const_tab2) |
|
386 | 552 |
handle Symtab.DUPS cs => |
553 |
raise_term ("Incompatible types for constant(s) " ^ commas_quote cs) []; |
|
554 |
||
555 |
val syn = Syntax.merge_syntaxes syn1 syn2; |
|
251 | 556 |
in |
557 |
Sg {tsig = tsig, const_tab = const_tab, syn = syn, stamps = stamps} |
|
558 |
end; |
|
143 | 559 |
|
0 | 560 |
|
561 |
||
251 | 562 |
(** the Pure signature **) |
0 | 563 |
|
922
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
564 |
val proto_pure = |
763 | 565 |
make_sign (Syntax.pure_syn, tsig0, Symtab.null) [] "#" |
410 | 566 |
|> add_types |
386 | 567 |
(("fun", 2, NoSyn) :: |
568 |
("prop", 0, NoSyn) :: |
|
569 |
("itself", 1, NoSyn) :: |
|
562 | 570 |
Syntax.pure_types) |
571 |
|> add_classes [(logicC, [])] |
|
410 | 572 |
|> add_defsort logicS |
573 |
|> add_arities |
|
386 | 574 |
[("fun", [logicS, logicS], logicS), |
575 |
("prop", [], logicS), |
|
576 |
("itself", [logicS], logicS)] |
|
562 | 577 |
|> add_syntax Syntax.pure_syntax |
410 | 578 |
|> add_trfuns Syntax.pure_trfuns |
579 |
|> add_consts |
|
386 | 580 |
[("==", "['a::{}, 'a] => prop", Mixfix ("(_ ==/ _)", [3, 2], 2)), |
581 |
("=?=", "['a::{}, 'a] => prop", Mixfix ("(_ =?=/ _)", [3, 2], 2)), |
|
582 |
("==>", "[prop, prop] => prop", Mixfix ("(_ ==>/ _)", [2, 1], 1)), |
|
865 | 583 |
("all", "('a => prop) => prop", Binder ("!!", 0, 0)), |
573 | 584 |
("TYPE", "'a itself", NoSyn)] |
922
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
585 |
|> add_name "ProtoPure"; |
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
586 |
|
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
587 |
val pure = proto_pure |
1180 | 588 |
|> add_syntax Syntax.pure_appl_syntax |
410 | 589 |
|> add_name "Pure"; |
0 | 590 |
|
922
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
591 |
val cpure = proto_pure |
1180 | 592 |
|> add_syntax Syntax.pure_applC_syntax |
922
196ca0973a6d
added CPure (curried functions) and ProtoPure (ancestor of Pure and CPure)
clasohm
parents:
901
diff
changeset
|
593 |
|> add_name "CPure"; |
0 | 594 |
|
1501 | 595 |
end |
0 | 596 |
end; |