wenzelm@548
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(* Title: Pure/Syntax/syn_trans.ML
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wenzelm@548
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ID: $Id$
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wenzelm@548
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Author: Tobias Nipkow and Markus Wenzel, TU Muenchen
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wenzelm@12785
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License: GPL (GNU GENERAL PUBLIC LICENSE)
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wenzelm@548
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wenzelm@548
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Syntax translation functions.
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wenzelm@548
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*)
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wenzelm@548
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signature SYN_TRANS0 =
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wenzelm@2698
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sig
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wenzelm@548
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val eta_contract: bool ref
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nipkow@13762
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val atomic_abs_tr': string * typ * term -> term * term
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wenzelm@548
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val mk_binder_tr: string * string -> string * (term list -> term)
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wenzelm@548
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val mk_binder_tr': string * string -> string * (term list -> term)
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wenzelm@548
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val dependent_tr': string * string -> term list -> term
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wenzelm@8577
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val antiquote_tr: string -> term -> term
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wenzelm@8577
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val quote_tr: string -> term -> term
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wenzelm@5084
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val quote_antiquote_tr: string -> string -> string -> string * (term list -> term)
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wenzelm@8577
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val antiquote_tr': string -> term -> term
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wenzelm@8577
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val quote_tr': string -> term -> term
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wenzelm@5084
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val quote_antiquote_tr': string -> string -> string -> string * (term list -> term)
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wenzelm@2698
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val mark_bound: string -> term
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wenzelm@2698
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val mark_boundT: string * typ -> term
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wenzelm@2698
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val variant_abs': string * typ * term -> string * term
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wenzelm@2698
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end;
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wenzelm@548
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signature SYN_TRANS1 =
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wenzelm@2698
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sig
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wenzelm@548
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include SYN_TRANS0
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wenzelm@14647
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val non_typed_tr': (term list -> term) -> bool -> typ -> term list -> term
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wenzelm@14647
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val non_typed_tr'': ('a -> term list -> term) -> 'a -> bool -> typ -> term list -> term
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paulson@1511
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val constrainAbsC: string
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paulson@1511
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val pure_trfuns:
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paulson@1511
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(string * (Ast.ast list -> Ast.ast)) list *
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(string * (term list -> term)) list *
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(string * (term list -> term)) list *
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paulson@1511
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(string * (Ast.ast list -> Ast.ast)) list
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wenzelm@4148
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val pure_trfunsT: (string * (bool -> typ -> term list -> term)) list
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wenzelm@2698
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end;
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signature SYN_TRANS =
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wenzelm@2698
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sig
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wenzelm@548
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include SYN_TRANS1
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paulson@1511
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val abs_tr': term -> term
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wenzelm@4148
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val prop_tr': term -> term
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paulson@1511
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val appl_ast_tr': Ast.ast * Ast.ast list -> Ast.ast
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paulson@1511
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val applC_ast_tr': Ast.ast * Ast.ast list -> Ast.ast
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paulson@1511
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val pt_to_ast: (string -> (Ast.ast list -> Ast.ast) option) -> Parser.parsetree -> Ast.ast
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paulson@1511
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val ast_to_term: (string -> (term list -> term) option) -> Ast.ast -> term
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wenzelm@2698
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end;
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wenzelm@2698
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structure SynTrans: SYN_TRANS =
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struct
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wenzelm@2698
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wenzelm@2698
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(** parse (ast) translations **)
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wenzelm@11491
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(* constify *)
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wenzelm@11491
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wenzelm@11491
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fun constify_ast_tr [Ast.Variable c] = Ast.Constant c
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wenzelm@11491
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| constify_ast_tr asts = raise Ast.AST ("constify_ast_tr", asts);
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wenzelm@11491
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wenzelm@11491
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(* application *)
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wenzelm@548
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wenzelm@5690
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fun appl_ast_tr [f, args] = Ast.Appl (f :: Ast.unfold_ast "_args" args)
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wenzelm@5690
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| appl_ast_tr asts = raise Ast.AST ("appl_ast_tr", asts);
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clasohm@922
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wenzelm@5690
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fun applC_ast_tr [f, args] = Ast.Appl (f :: Ast.unfold_ast "_cargs" args)
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wenzelm@5690
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| applC_ast_tr asts = raise Ast.AST ("applC_ast_tr", asts);
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(* abstraction *)
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wenzelm@5690
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fun idtyp_ast_tr (*"_idtyp"*) [x, ty] = Ast.Appl [Ast.Constant SynExt.constrainC, x, ty]
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wenzelm@5690
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| idtyp_ast_tr (*"_idtyp"*) asts = raise Ast.AST ("idtyp_ast_tr", asts);
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wenzelm@548
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wenzelm@3691
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fun lambda_ast_tr (*"_lambda"*) [pats, body] =
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wenzelm@5690
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Ast.fold_ast_p "_abs" (Ast.unfold_ast "_pttrns" pats, body)
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wenzelm@5690
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| lambda_ast_tr (*"_lambda"*) asts = raise Ast.AST ("lambda_ast_tr", asts);
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wenzelm@548
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val constrainAbsC = "_constrainAbs";
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wenzelm@548
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wenzelm@5690
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fun abs_tr (*"_abs"*) [Free (x, T), body] = Term.absfree (x, T, body)
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wenzelm@548
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| abs_tr (*"_abs"*) (ts as [Const (c, _) $ Free (x, T) $ tT, body]) =
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wenzelm@5690
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if c = SynExt.constrainC
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then Lexicon.const constrainAbsC $ Term.absfree (x, T, body) $ tT
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wenzelm@3777
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else raise TERM ("abs_tr", ts)
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wenzelm@3777
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| abs_tr (*"_abs"*) ts = raise TERM ("abs_tr", ts);
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(* nondependent abstraction *)
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wenzelm@5690
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fun k_tr (*"_K"*) [t] = Abs ("uu", dummyT, Term.incr_boundvars 1 t)
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wenzelm@3777
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| k_tr (*"_K"*) ts = raise TERM ("k_tr", ts);
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wenzelm@548
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(* binder *)
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fun mk_binder_tr (sy, name) =
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let
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fun tr (Free (x, T), t) = Lexicon.const name $ Term.absfree (x, T, t)
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| tr (Const ("_idts", _) $ idt $ idts, t) = tr (idt, tr (idts, t))
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| tr (t1 as Const (c, _) $ Free (x, T) $ tT, t) =
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wenzelm@5690
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if c = SynExt.constrainC then
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Lexicon.const name $ (Lexicon.const constrainAbsC $ Term.absfree (x, T, t) $ tT)
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wenzelm@3777
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else raise TERM ("binder_tr", [t1, t])
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wenzelm@3777
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| tr (t1, t2) = raise TERM ("binder_tr", [t1, t2]);
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wenzelm@548
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wenzelm@548
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fun binder_tr (*sy*) [idts, body] = tr (idts, body)
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wenzelm@3777
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| binder_tr (*sy*) ts = raise TERM ("binder_tr", ts);
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wenzelm@548
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in
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(sy, binder_tr)
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end;
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wenzelm@548
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wenzelm@548
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wenzelm@548
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(* meta propositions *)
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wenzelm@5690
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fun aprop_tr (*"_aprop"*) [t] = Lexicon.const SynExt.constrainC $ t $ Lexicon.const "prop"
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wenzelm@3777
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| aprop_tr (*"_aprop"*) ts = raise TERM ("aprop_tr", ts);
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wenzelm@548
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wenzelm@548
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fun ofclass_tr (*"_ofclass"*) [ty, cls] =
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wenzelm@5690
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cls $ (Lexicon.const SynExt.constrainC $ Lexicon.const "TYPE" $
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wenzelm@5690
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(Lexicon.const "itself" $ ty))
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wenzelm@3777
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| ofclass_tr (*"_ofclass"*) ts = raise TERM ("ofclass_tr", ts);
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wenzelm@548
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wenzelm@548
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wenzelm@548
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(* meta implication *)
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wenzelm@548
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wenzelm@548
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fun bigimpl_ast_tr (*"_bigimpl"*) [asms, concl] =
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wenzelm@5690
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Ast.fold_ast_p "==>" (Ast.unfold_ast "_asms" asms, concl)
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wenzelm@5690
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| bigimpl_ast_tr (*"_bigimpl"*) asts = raise Ast.AST ("bigimpl_ast_tr", asts);
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wenzelm@548
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wenzelm@548
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wenzelm@4148
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(* type reflection *)
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wenzelm@4148
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wenzelm@4148
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fun type_tr (*"_TYPE"*) [ty] =
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wenzelm@5690
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Lexicon.const SynExt.constrainC $ Lexicon.const "TYPE" $ (Lexicon.const "itself" $ ty)
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wenzelm@4148
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| type_tr (*"_TYPE"*) ts = raise TERM ("type_tr", ts);
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wenzelm@4148
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wenzelm@548
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wenzelm@6761
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(* dddot *)
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wenzelm@6761
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wenzelm@8595
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fun dddot_tr (*"_DDDOT"*) ts = Term.list_comb (Lexicon.var SynExt.dddot_indexname, ts);
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wenzelm@6761
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wenzelm@6761
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wenzelm@5084
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(* quote / antiquote *)
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wenzelm@5084
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wenzelm@8577
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fun antiquote_tr name =
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wenzelm@8577
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let
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wenzelm@8577
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fun tr i ((t as Const (c, _)) $ u) =
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wenzelm@8577
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if c = name then tr i u $ Bound i
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wenzelm@8577
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else tr i t $ tr i u
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wenzelm@8577
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| tr i (t $ u) = tr i t $ tr i u
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wenzelm@8577
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| tr i (Abs (x, T, t)) = Abs (x, T, tr (i + 1) t)
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wenzelm@8577
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| tr _ a = a;
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wenzelm@8577
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in tr 0 end;
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wenzelm@8577
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wenzelm@8577
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fun quote_tr name t = Abs ("s", dummyT, antiquote_tr name (Term.incr_boundvars 1 t));
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wenzelm@8577
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wenzelm@5084
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fun quote_antiquote_tr quoteN antiquoteN name =
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wenzelm@5084
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let
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wenzelm@8577
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fun tr [t] = Lexicon.const name $ quote_tr antiquoteN t
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wenzelm@8577
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| tr ts = raise TERM ("quote_tr", ts);
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wenzelm@8577
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in (quoteN, tr) end;
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wenzelm@5084
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wenzelm@5084
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wenzelm@12122
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(* index variable *)
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wenzelm@12122
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wenzelm@12122
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fun indexvar_ast_tr [] = Ast.Variable "some_index"
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wenzelm@12122
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| indexvar_ast_tr asts = raise Ast.AST ("indexvar_ast_tr", asts);
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wenzelm@12122
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wenzelm@12122
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wenzelm@5084
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wenzelm@548
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(** print (ast) translations **)
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wenzelm@548
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wenzelm@14647
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(* types *)
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wenzelm@14647
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wenzelm@14647
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fun non_typed_tr' f _ _ ts = f ts;
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wenzelm@14647
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fun non_typed_tr'' f x _ _ ts = f x ts;
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wenzelm@14647
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wenzelm@14647
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wenzelm@548
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(* application *)
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wenzelm@548
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wenzelm@5690
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fun appl_ast_tr' (f, []) = raise Ast.AST ("appl_ast_tr'", [f])
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wenzelm@5690
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| appl_ast_tr' (f, args) = Ast.Appl [Ast.Constant "_appl", f, Ast.fold_ast "_args" args];
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wenzelm@548
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wenzelm@5690
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fun applC_ast_tr' (f, []) = raise Ast.AST ("applC_ast_tr'", [f])
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wenzelm@5690
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| applC_ast_tr' (f, args) = Ast.Appl [Ast.Constant "_applC", f, Ast.fold_ast "_cargs" args];
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clasohm@922
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wenzelm@548
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wenzelm@548
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(* abstraction *)
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wenzelm@548
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wenzelm@5690
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fun mark_boundT x_T = Lexicon.const "_bound" $ Free x_T;
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wenzelm@2698
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fun mark_bound x = mark_boundT (x, dummyT);
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wenzelm@2698
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wenzelm@548
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fun strip_abss vars_of body_of tm =
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wenzelm@548
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let
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wenzelm@548
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val vars = vars_of tm;
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wenzelm@548
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val body = body_of tm;
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wenzelm@548
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val rev_new_vars = rename_wrt_term body vars;
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wenzelm@548
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in
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wenzelm@2698
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(map mark_boundT (rev rev_new_vars),
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wenzelm@2698
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subst_bounds (map (mark_bound o #1) rev_new_vars, body))
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wenzelm@548
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end;
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wenzelm@548
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wenzelm@3928
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wenzelm@548
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(*do (partial) eta-contraction before printing*)
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wenzelm@548
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nipkow@1326
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val eta_contract = ref true;
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wenzelm@548
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wenzelm@548
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fun eta_contr tm =
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wenzelm@548
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let
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wenzelm@3928
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fun is_aprop (Const ("_aprop", _)) = true
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wenzelm@3928
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| is_aprop _ = false;
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wenzelm@3928
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wenzelm@548
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fun eta_abs (Abs (a, T, t)) =
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wenzelm@548
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(case eta_abs t of
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wenzelm@548
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t' as f $ u =>
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wenzelm@548
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(case eta_abs u of
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wenzelm@548
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Bound 0 =>
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wenzelm@5084
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if Term.loose_bvar1 (f, 0) orelse is_aprop f then Abs (a, T, t')
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wenzelm@3928
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else incr_boundvars ~1 f
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wenzelm@548
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| _ => Abs (a, T, t'))
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wenzelm@548
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| t' => Abs (a, T, t'))
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wenzelm@548
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| eta_abs t = t;
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wenzelm@548
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in
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wenzelm@548
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if ! eta_contract then eta_abs tm else tm
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wenzelm@548
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end;
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wenzelm@548
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wenzelm@548
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wenzelm@548
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fun abs_tr' tm =
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wenzelm@5690
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foldr (fn (x, t) => Lexicon.const "_abs" $ x $ t)
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wenzelm@548
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(strip_abss strip_abs_vars strip_abs_body (eta_contr tm));
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wenzelm@548
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wenzelm@548
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nipkow@13762
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fun atomic_abs_tr' (x,T,t) =
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nipkow@13762
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let val [xT] = rename_wrt_term t [(x,T)];
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nipkow@13762
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in (mark_boundT xT, subst_bound (mark_bound(fst xT), t)) end;
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nipkow@13762
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wenzelm@548
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fun abs_ast_tr' (*"_abs"*) asts =
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wenzelm@5690
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(case Ast.unfold_ast_p "_abs" (Ast.Appl (Ast.Constant "_abs" :: asts)) of
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wenzelm@5690
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([], _) => raise Ast.AST ("abs_ast_tr'", asts)
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wenzelm@5690
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| (xs, body) => Ast.Appl [Ast.Constant "_lambda", Ast.fold_ast "_pttrns" xs, body]);
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wenzelm@548
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wenzelm@548
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wenzelm@548
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247 |
(* binder *)
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wenzelm@548
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wenzelm@548
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fun mk_binder_tr' (name, sy) =
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wenzelm@548
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250 |
let
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wenzelm@548
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251 |
fun mk_idts [] = raise Match (*abort translation*)
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wenzelm@548
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252 |
| mk_idts [idt] = idt
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wenzelm@5690
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| mk_idts (idt :: idts) = Lexicon.const "_idts" $ idt $ mk_idts idts;
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wenzelm@548
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wenzelm@548
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fun tr' t =
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wenzelm@548
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256 |
let
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wenzelm@548
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val (xs, bd) = strip_abss (strip_qnt_vars name) (strip_qnt_body name) t;
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wenzelm@5690
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in Lexicon.const sy $ mk_idts xs $ bd end;
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wenzelm@548
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wenzelm@5690
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fun binder_tr' (*name*) (t :: ts) = Term.list_comb (tr' (Lexicon.const name $ t), ts)
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wenzelm@548
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| binder_tr' (*name*) [] = raise Match;
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wenzelm@548
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in
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wenzelm@548
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(name, binder_tr')
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wenzelm@548
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end;
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wenzelm@548
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wenzelm@548
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266 |
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wenzelm@3691
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267 |
(* idtyp constraints *)
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wenzelm@548
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wenzelm@5690
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fun idtyp_ast_tr' a [Ast.Appl [Ast.Constant c, x, ty], xs] =
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wenzelm@5690
|
270 |
if c = SynExt.constrainC then
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wenzelm@5690
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271 |
Ast.Appl [ Ast.Constant a, Ast.Appl [Ast.Constant "_idtyp", x, ty], xs]
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wenzelm@548
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else raise Match
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wenzelm@3691
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273 |
| idtyp_ast_tr' _ _ = raise Match;
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wenzelm@548
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274 |
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wenzelm@548
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275 |
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wenzelm@548
|
276 |
(* meta propositions *)
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wenzelm@548
|
277 |
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wenzelm@4148
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278 |
fun prop_tr' tm =
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wenzelm@548
|
279 |
let
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wenzelm@5690
|
280 |
fun aprop t = Lexicon.const "_aprop" $ t;
|
wenzelm@548
|
281 |
|
wenzelm@2698
|
282 |
fun is_prop Ts t =
|
wenzelm@2698
|
283 |
fastype_of1 (Ts, t) = propT handle TERM _ => false;
|
wenzelm@548
|
284 |
|
wenzelm@548
|
285 |
fun tr' _ (t as Const _) = t
|
wenzelm@2698
|
286 |
| tr' _ (t as Free (x, T)) =
|
wenzelm@5690
|
287 |
if T = propT then aprop (Lexicon.free x) else t
|
wenzelm@2698
|
288 |
| tr' _ (t as Var (xi, T)) =
|
wenzelm@5690
|
289 |
if T = propT then aprop (Lexicon.var xi) else t
|
wenzelm@2698
|
290 |
| tr' Ts (t as Bound _) =
|
wenzelm@2698
|
291 |
if is_prop Ts t then aprop t else t
|
wenzelm@2698
|
292 |
| tr' Ts (Abs (x, T, t)) = Abs (x, T, tr' (T :: Ts) t)
|
wenzelm@2698
|
293 |
| tr' Ts (t as t1 $ (t2 as Const ("TYPE", Type ("itself", [T])))) =
|
wenzelm@4148
|
294 |
if is_prop Ts t then Const ("_mk_ofclass", T) $ tr' Ts t1
|
wenzelm@2698
|
295 |
else tr' Ts t1 $ tr' Ts t2
|
wenzelm@2698
|
296 |
| tr' Ts (t as t1 $ t2) =
|
wenzelm@5690
|
297 |
(if is_Const (Term.head_of t) orelse not (is_prop Ts t)
|
wenzelm@2698
|
298 |
then I else aprop) (tr' Ts t1 $ tr' Ts t2);
|
wenzelm@548
|
299 |
in
|
wenzelm@548
|
300 |
tr' [] tm
|
wenzelm@548
|
301 |
end;
|
wenzelm@548
|
302 |
|
wenzelm@4148
|
303 |
fun mk_ofclass_tr' show_sorts (*"_mk_ofclass"*) T [t] =
|
wenzelm@5690
|
304 |
Lexicon.const "_ofclass" $ TypeExt.term_of_typ show_sorts T $ t
|
wenzelm@4148
|
305 |
| mk_ofclass_tr' _ (*"_mk_ofclass"*) T ts = raise TYPE ("mk_ofclass_tr'", [T], ts);
|
wenzelm@2698
|
306 |
|
wenzelm@2698
|
307 |
|
wenzelm@548
|
308 |
(* meta implication *)
|
wenzelm@548
|
309 |
|
wenzelm@548
|
310 |
fun impl_ast_tr' (*"==>"*) asts =
|
wenzelm@10572
|
311 |
if TypeExt.no_brackets () then raise Match
|
wenzelm@10572
|
312 |
else
|
wenzelm@10572
|
313 |
(case Ast.unfold_ast_p "==>" (Ast.Appl (Ast.Constant "==>" :: asts)) of
|
wenzelm@10572
|
314 |
(asms as _ :: _ :: _, concl)
|
wenzelm@10572
|
315 |
=> Ast.Appl [Ast.Constant "_bigimpl", Ast.fold_ast "_asms" asms, concl]
|
wenzelm@10572
|
316 |
| _ => raise Match);
|
wenzelm@548
|
317 |
|
wenzelm@548
|
318 |
|
wenzelm@12150
|
319 |
(* meta conjunction *)
|
wenzelm@12150
|
320 |
|
wenzelm@12150
|
321 |
fun meta_conjunction_tr' (*"all"*)
|
wenzelm@12150
|
322 |
[Abs (_, _, Const ("==>", _) $
|
wenzelm@12150
|
323 |
(Const ("==>", _) $ A $ (Const ("==>", _) $ B $ (Const ("_aprop", _) $ Bound 0))) $
|
wenzelm@12150
|
324 |
(Const ("_aprop", _) $ Bound 0))] =
|
wenzelm@12150
|
325 |
if 0 mem_int Term.loose_bnos A orelse 0 mem_int Term.loose_bnos B then raise Match
|
wenzelm@12150
|
326 |
else Lexicon.const "_meta_conjunction" $ A $ B
|
wenzelm@12150
|
327 |
| meta_conjunction_tr' (*"all"*) ts = raise Match;
|
wenzelm@12150
|
328 |
|
wenzelm@12150
|
329 |
|
wenzelm@4148
|
330 |
(* type reflection *)
|
wenzelm@4148
|
331 |
|
wenzelm@4148
|
332 |
fun type_tr' show_sorts (*"TYPE"*) (Type ("itself", [T])) ts =
|
wenzelm@5690
|
333 |
Term.list_comb (Lexicon.const "_TYPE" $ TypeExt.term_of_typ show_sorts T, ts)
|
wenzelm@4148
|
334 |
| type_tr' _ _ _ = raise Match;
|
wenzelm@4148
|
335 |
|
wenzelm@4148
|
336 |
|
wenzelm@548
|
337 |
(* dependent / nondependent quantifiers *)
|
wenzelm@548
|
338 |
|
wenzelm@2698
|
339 |
fun variant_abs' (x, T, B) =
|
wenzelm@2698
|
340 |
let val x' = variant (add_term_names (B, [])) x in
|
wenzelm@2698
|
341 |
(x', subst_bound (mark_boundT (x', T), B))
|
wenzelm@2698
|
342 |
end;
|
wenzelm@2698
|
343 |
|
wenzelm@548
|
344 |
fun dependent_tr' (q, r) (A :: Abs (x, T, B) :: ts) =
|
wenzelm@5084
|
345 |
if Term.loose_bvar1 (B, 0) then
|
wenzelm@2698
|
346 |
let val (x', B') = variant_abs' (x, dummyT, B);
|
wenzelm@5690
|
347 |
in Term.list_comb (Lexicon.const q $ mark_boundT (x', T) $ A $ B', ts) end
|
wenzelm@5690
|
348 |
else Term.list_comb (Lexicon.const r $ A $ B, ts)
|
wenzelm@548
|
349 |
| dependent_tr' _ _ = raise Match;
|
wenzelm@548
|
350 |
|
wenzelm@548
|
351 |
|
wenzelm@5084
|
352 |
(* quote / antiquote *)
|
wenzelm@5084
|
353 |
|
wenzelm@8577
|
354 |
fun antiquote_tr' name =
|
wenzelm@8577
|
355 |
let
|
wenzelm@8577
|
356 |
fun tr' i (t $ u) =
|
wenzelm@8577
|
357 |
if u = Bound i then Lexicon.const name $ tr' i t
|
wenzelm@8577
|
358 |
else tr' i t $ tr' i u
|
wenzelm@8577
|
359 |
| tr' i (Abs (x, T, t)) = Abs (x, T, tr' (i + 1) t)
|
wenzelm@8577
|
360 |
| tr' i a = if a = Bound i then raise Match else a;
|
wenzelm@8577
|
361 |
in tr' 0 end;
|
wenzelm@8577
|
362 |
|
wenzelm@8577
|
363 |
fun quote_tr' name (Abs (_, _, t)) = Term.incr_boundvars ~1 (antiquote_tr' name t)
|
wenzelm@8577
|
364 |
| quote_tr' _ _ = raise Match;
|
wenzelm@8577
|
365 |
|
wenzelm@5084
|
366 |
fun quote_antiquote_tr' quoteN antiquoteN name =
|
wenzelm@5084
|
367 |
let
|
wenzelm@8577
|
368 |
fun tr' (t :: ts) = Term.list_comb (Lexicon.const quoteN $ quote_tr' antiquoteN t, ts)
|
wenzelm@8577
|
369 |
| tr' _ = raise Match;
|
wenzelm@8577
|
370 |
in (name, tr') end;
|
wenzelm@5084
|
371 |
|
wenzelm@5084
|
372 |
|
wenzelm@548
|
373 |
|
wenzelm@548
|
374 |
(** pure_trfuns **)
|
wenzelm@548
|
375 |
|
wenzelm@548
|
376 |
val pure_trfuns =
|
wenzelm@11491
|
377 |
([("_constify", constify_ast_tr), ("_appl", appl_ast_tr), ("_applC", applC_ast_tr),
|
wenzelm@12122
|
378 |
("_lambda", lambda_ast_tr), ("_idtyp", idtyp_ast_tr), ("_bigimpl", bigimpl_ast_tr),
|
wenzelm@12122
|
379 |
("_indexvar", indexvar_ast_tr)],
|
clasohm@922
|
380 |
[("_abs", abs_tr), ("_aprop", aprop_tr), ("_ofclass", ofclass_tr),
|
wenzelm@6761
|
381 |
("_TYPE", type_tr), ("_DDDOT", dddot_tr), ("_K", k_tr)],
|
wenzelm@12150
|
382 |
[("all", meta_conjunction_tr')],
|
wenzelm@3691
|
383 |
[("_abs", abs_ast_tr'), ("_idts", idtyp_ast_tr' "_idts"),
|
wenzelm@3691
|
384 |
("_pttrns", idtyp_ast_tr' "_pttrns"), ("==>", impl_ast_tr')]);
|
wenzelm@548
|
385 |
|
wenzelm@2698
|
386 |
val pure_trfunsT =
|
wenzelm@4148
|
387 |
[("_mk_ofclass", mk_ofclass_tr'), ("TYPE", type_tr')];
|
wenzelm@2698
|
388 |
|
wenzelm@548
|
389 |
|
wenzelm@548
|
390 |
|
wenzelm@548
|
391 |
(** pt_to_ast **)
|
wenzelm@548
|
392 |
|
wenzelm@548
|
393 |
fun pt_to_ast trf pt =
|
wenzelm@548
|
394 |
let
|
wenzelm@548
|
395 |
fun trans a args =
|
wenzelm@548
|
396 |
(case trf a of
|
wenzelm@5690
|
397 |
None => Ast.mk_appl (Ast.Constant a) args
|
wenzelm@548
|
398 |
| Some f => f args handle exn
|
clasohm@987
|
399 |
=> (writeln ("Error in parse ast translation for " ^ quote a);
|
clasohm@987
|
400 |
raise exn));
|
wenzelm@548
|
401 |
|
clasohm@987
|
402 |
(*translate pt bottom-up*)
|
wenzelm@5690
|
403 |
fun ast_of (Parser.Node (a, pts)) = trans a (map ast_of pts)
|
wenzelm@5690
|
404 |
| ast_of (Parser.Tip tok) = Ast.Variable (Lexicon.str_of_token tok);
|
wenzelm@548
|
405 |
in
|
clasohm@1178
|
406 |
ast_of pt
|
wenzelm@548
|
407 |
end;
|
wenzelm@548
|
408 |
|
wenzelm@548
|
409 |
|
wenzelm@548
|
410 |
|
wenzelm@548
|
411 |
(** ast_to_term **)
|
wenzelm@548
|
412 |
|
wenzelm@548
|
413 |
fun ast_to_term trf ast =
|
wenzelm@548
|
414 |
let
|
wenzelm@548
|
415 |
fun trans a args =
|
wenzelm@548
|
416 |
(case trf a of
|
wenzelm@5690
|
417 |
None => Term.list_comb (Lexicon.const a, args)
|
wenzelm@548
|
418 |
| Some f => f args handle exn
|
clasohm@987
|
419 |
=> (writeln ("Error in parse translation for " ^ quote a);
|
clasohm@987
|
420 |
raise exn));
|
wenzelm@548
|
421 |
|
wenzelm@5690
|
422 |
fun term_of (Ast.Constant a) = trans a []
|
wenzelm@5690
|
423 |
| term_of (Ast.Variable x) = Lexicon.read_var x
|
wenzelm@5690
|
424 |
| term_of (Ast.Appl (Ast.Constant a :: (asts as _ :: _))) =
|
wenzelm@548
|
425 |
trans a (map term_of asts)
|
wenzelm@5690
|
426 |
| term_of (Ast.Appl (ast :: (asts as _ :: _))) =
|
wenzelm@5690
|
427 |
Term.list_comb (term_of ast, map term_of asts)
|
wenzelm@5690
|
428 |
| term_of (ast as Ast.Appl _) = raise Ast.AST ("ast_to_term: malformed ast", [ast]);
|
wenzelm@548
|
429 |
in
|
wenzelm@548
|
430 |
term_of ast
|
wenzelm@548
|
431 |
end;
|
wenzelm@548
|
432 |
|
wenzelm@548
|
433 |
end;
|