author  blanchet 
Sun, 17 Jul 2011 14:12:45 +0200  
changeset 43863  a43d61270142 
parent 43862  a14fdb8c0497 
child 43864  58a7b3fdc193 
permissions  rwrr 
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(* Title: HOL/Tools/ATP/atp_translate.ML 
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Author: Fabian Immler, TU Muenchen 
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Author: Makarius 
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Author: Jasmin Blanchette, TU Muenchen 
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Translation of HOL to FOL for Metis and Sledgehammer. 
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*) 
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signature ATP_TRANSLATE = 
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sig 
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type ('a, 'b) ho_term = ('a, 'b) ATP_Problem.ho_term 
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type connective = ATP_Problem.connective 
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type ('a, 'b, 'c) formula = ('a, 'b, 'c) ATP_Problem.formula 
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type format = ATP_Problem.format 
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type formula_kind = ATP_Problem.formula_kind 
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type 'a problem = 'a ATP_Problem.problem 
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datatype locality = 
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General  Helper  Extensionality  Intro  Elim  Simp  Local  Assum  

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Chained 

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datatype order = First_Order  Higher_Order 
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datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
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datatype type_level = 
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All_Types  Noninf_Nonmono_Types  Fin_Nonmono_Types  Const_Arg_Types  
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No_Types 

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datatype type_heaviness = Heavyweight  Lightweight 
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datatype type_enc = 
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Simple_Types of order * type_level  
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Preds of polymorphism * type_level * type_heaviness  
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Tags of polymorphism * type_level * type_heaviness 

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val bound_var_prefix : string 
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val schematic_var_prefix : string 
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val fixed_var_prefix : string 
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val tvar_prefix : string 
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val tfree_prefix : string 
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val const_prefix : string 
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val type_const_prefix : string 
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val class_prefix : string 
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val skolem_const_prefix : string 
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val old_skolem_const_prefix : string 
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val new_skolem_const_prefix : string 
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val type_decl_prefix : string 
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val sym_decl_prefix : string 
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val preds_sym_formula_prefix : string 
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val lightweight_tags_sym_formula_prefix : string 
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val fact_prefix : string 
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val conjecture_prefix : string 
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val helper_prefix : string 
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val class_rel_clause_prefix : string 
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val arity_clause_prefix : string 
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val tfree_clause_prefix : string 
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val typed_helper_suffix : string 
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val untyped_helper_suffix : string 
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val type_tag_idempotence_helper_name : string 
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val predicator_name : string 
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val app_op_name : string 
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val type_tag_name : string 
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val type_pred_name : string 
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val simple_type_prefix : string 
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val prefixed_predicator_name : string 
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val prefixed_app_op_name : string 
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val prefixed_type_tag_name : string 
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val ascii_of : string > string 
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val unascii_of : string > string 
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val strip_prefix_and_unascii : string > string > string option 
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val proxy_table : (string * (string * (thm * (string * string)))) list 
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val proxify_const : string > (string * string) option 
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val invert_const : string > string 
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val unproxify_const : string > string 
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val new_skolem_var_name_from_const : string > string 
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val num_type_args : theory > string > int 

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val atp_irrelevant_consts : string list 
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val atp_schematic_consts_of : term > typ list Symtab.table 
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val is_locality_global : locality > bool 
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val type_enc_from_string : string > type_enc 
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val is_type_enc_higher_order : type_enc > bool 
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val polymorphism_of_type_enc : type_enc > polymorphism 
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val level_of_type_enc : type_enc > type_level 
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val is_type_enc_virtually_sound : type_enc > bool 
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val is_type_enc_fairly_sound : type_enc > bool 
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val choose_format : format list > type_enc > format * type_enc 
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val mk_aconns : 
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connective > ('a, 'b, 'c) formula list > ('a, 'b, 'c) formula 
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val unmangled_const : string > string * (string, 'b) ho_term list 
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val unmangled_const_name : string > string 
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val helper_table : ((string * bool) * thm list) list 
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val factsN : string 
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val conceal_lambdas : Proof.context > term > term 
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val introduce_combinators : Proof.context > term > term 
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val prepare_atp_problem : 
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Proof.context > format > formula_kind > formula_kind > type_enc > bool 
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> bool > (term list > term list * term list) > bool > bool > term list 
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> term > ((string * locality) * term) list 
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> string problem * string Symtab.table * int * int 
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* (string * locality) list vector * int list * int Symtab.table 
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val atp_problem_weights : string problem > (string * real) list 
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end; 
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structure ATP_Translate : ATP_TRANSLATE = 
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struct 
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open ATP_Util 
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open ATP_Problem 
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type name = string * string 
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val generate_info = false (* experimental *) 
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fun isabelle_info s = 
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if generate_info then SOME (ATerm ("[]", [ATerm ("isabelle_" ^ s, [])])) 

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else NONE 

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val introN = "intro" 
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val elimN = "elim" 

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val simpN = "simp" 

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val bound_var_prefix = "B_" 
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val schematic_var_prefix = "V_" 
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val fixed_var_prefix = "v_" 
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val tvar_prefix = "T_" 
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val tfree_prefix = "t_" 
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val const_prefix = "c_" 
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val type_const_prefix = "tc_" 
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val class_prefix = "cl_" 
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val skolem_const_prefix = "ATP" ^ Long_Name.separator ^ "Sko" 
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val old_skolem_const_prefix = skolem_const_prefix ^ "o" 
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val new_skolem_const_prefix = skolem_const_prefix ^ "n" 
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val type_decl_prefix = "ty_" 
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val sym_decl_prefix = "sy_" 
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val preds_sym_formula_prefix = "psy_" 
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val lightweight_tags_sym_formula_prefix = "tsy_" 
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val fact_prefix = "fact_" 
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val conjecture_prefix = "conj_" 
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val helper_prefix = "help_" 
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val class_rel_clause_prefix = "clar_" 
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val arity_clause_prefix = "arity_" 
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val tfree_clause_prefix = "tfree_" 
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val lambda_fact_prefix = "ATP.lambda_" 
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val typed_helper_suffix = "_T" 
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val untyped_helper_suffix = "_U" 
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val type_tag_idempotence_helper_name = helper_prefix ^ "ti_idem" 
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val predicator_name = "hBOOL" 
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val app_op_name = "hAPP" 
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val type_tag_name = "ti" 
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val type_pred_name = "is" 
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val simple_type_prefix = "ty_" 
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val prefixed_predicator_name = const_prefix ^ predicator_name 
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val prefixed_app_op_name = const_prefix ^ app_op_name 
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val prefixed_type_tag_name = const_prefix ^ type_tag_name 
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(* Freshness almost guaranteed! *) 
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val atp_weak_prefix = "ATP:" 
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val concealed_lambda_prefix = atp_weak_prefix ^ "lambda_" 
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(*Escaping of special characters. 
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Alphanumeric characters are left unchanged. 
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The character _ goes to __ 
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Characters in the range ASCII space to / go to _A to _P, respectively. 
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Other characters go to _nnn where nnn is the decimal ASCII code.*) 
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val upper_a_minus_space = Char.ord #"A"  Char.ord #" " 
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fun stringN_of_int 0 _ = "" 
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 stringN_of_int k n = 
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stringN_of_int (k  1) (n div 10) ^ string_of_int (n mod 10) 
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fun ascii_of_char c = 
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if Char.isAlphaNum c then 
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String.str c 
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else if c = #"_" then 
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"__" 
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else if #" " <= c andalso c <= #"/" then 
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"_" ^ String.str (Char.chr (Char.ord c + upper_a_minus_space)) 
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else 
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(* fixed width, in case more digits follow *) 
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"_" ^ stringN_of_int 3 (Char.ord c) 
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val ascii_of = String.translate ascii_of_char 
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(** Remove ASCII armoring from names in proof files **) 
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(* We don't raise error exceptions because this code can run inside a worker 
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thread. Also, the errors are impossible. *) 
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val unascii_of = 
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let 
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fun un rcs [] = String.implode(rev rcs) 
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 un rcs [#"_"] = un (#"_" :: rcs) [] (* ERROR *) 
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(* Three types of _ escapes: __, _A to _P, _nnn *) 
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 un rcs (#"_" :: #"_" :: cs) = un (#"_" :: rcs) cs 
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 un rcs (#"_" :: c :: cs) = 
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if #"A" <= c andalso c<= #"P" then 
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(* translation of #" " to #"/" *) 
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un (Char.chr (Char.ord c  upper_a_minus_space) :: rcs) cs 
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else 
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let val digits = List.take (c :: cs, 3) handle General.Subscript => [] in 
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case Int.fromString (String.implode digits) of 
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SOME n => un (Char.chr n :: rcs) (List.drop (cs, 2)) 
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 NONE => un (c :: #"_" :: rcs) cs (* ERROR *) 
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end 
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 un rcs (c :: cs) = un (c :: rcs) cs 
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in un [] o String.explode end 
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(* If string s has the prefix s1, return the result of deleting it, 
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unASCII'd. *) 
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fun strip_prefix_and_unascii s1 s = 
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if String.isPrefix s1 s then 
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SOME (unascii_of (String.extract (s, size s1, NONE))) 
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else 
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NONE 
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val proxy_table = 
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[("c_False", (@{const_name False}, (@{thm fFalse_def}, 
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("fFalse", @{const_name ATP.fFalse})))), 
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("c_True", (@{const_name True}, (@{thm fTrue_def}, 
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("fTrue", @{const_name ATP.fTrue})))), 
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("c_Not", (@{const_name Not}, (@{thm fNot_def}, 
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("fNot", @{const_name ATP.fNot})))), 
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("c_conj", (@{const_name conj}, (@{thm fconj_def}, 
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("fconj", @{const_name ATP.fconj})))), 
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("c_disj", (@{const_name disj}, (@{thm fdisj_def}, 
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("fdisj", @{const_name ATP.fdisj})))), 
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("c_implies", (@{const_name implies}, (@{thm fimplies_def}, 
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("fimplies", @{const_name ATP.fimplies})))), 
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("equal", (@{const_name HOL.eq}, (@{thm fequal_def}, 
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("fequal", @{const_name ATP.fequal})))), 
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("c_All", (@{const_name All}, (@{thm fAll_def}, 

235 
("fAll", @{const_name ATP.fAll})))), 

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("c_Ex", (@{const_name Ex}, (@{thm fEx_def}, 

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("fEx", @{const_name ATP.fEx}))))] 

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val proxify_const = AList.lookup (op =) proxy_table #> Option.map (snd o snd) 
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(* Readable names for the more common symbolic functions. Do not mess with the 
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table unless you know what you are doing. *) 
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val const_trans_table = 
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[(@{type_name Product_Type.prod}, "prod"), 
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(@{type_name Sum_Type.sum}, "sum"), 
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(@{const_name False}, "False"), 
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(@{const_name True}, "True"), 
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(@{const_name Not}, "Not"), 
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(@{const_name conj}, "conj"), 
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(@{const_name disj}, "disj"), 
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(@{const_name implies}, "implies"), 
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(@{const_name HOL.eq}, "equal"), 
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(@{const_name All}, "All"), 
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(@{const_name Ex}, "Ex"), 

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(@{const_name If}, "If"), 
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(@{const_name Set.member}, "member"), 
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(@{const_name Meson.COMBI}, "COMBI"), 
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(@{const_name Meson.COMBK}, "COMBK"), 
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(@{const_name Meson.COMBB}, "COMBB"), 
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(@{const_name Meson.COMBC}, "COMBC"), 
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(@{const_name Meson.COMBS}, "COMBS")] 
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> Symtab.make 
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> fold (Symtab.update o swap o snd o snd o snd) proxy_table 
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(* Invert the table of translations between Isabelle and ATPs. *) 
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val const_trans_table_inv = 
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const_trans_table > Symtab.dest > map swap > Symtab.make 
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val const_trans_table_unprox = 
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Symtab.empty 
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> fold (fn (_, (isa, (_, (_, atp)))) => Symtab.update (atp, isa)) proxy_table 
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val invert_const = perhaps (Symtab.lookup const_trans_table_inv) 
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val unproxify_const = perhaps (Symtab.lookup const_trans_table_unprox) 
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fun lookup_const c = 
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case Symtab.lookup const_trans_table c of 
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SOME c' => c' 
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 NONE => ascii_of c 
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43622  280 
fun ascii_of_indexname (v, 0) = ascii_of v 
281 
 ascii_of_indexname (v, i) = ascii_of v ^ "_" ^ string_of_int i 

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fun make_bound_var x = bound_var_prefix ^ ascii_of x 
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fun make_schematic_var v = schematic_var_prefix ^ ascii_of_indexname v 
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fun make_fixed_var x = fixed_var_prefix ^ ascii_of x 
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43622  287 
fun make_schematic_type_var (x, i) = 
288 
tvar_prefix ^ (ascii_of_indexname (unprefix "'" x, i)) 

289 
fun make_fixed_type_var x = tfree_prefix ^ (ascii_of (unprefix "'" x)) 

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43622  291 
(* "HOL.eq" is mapped to the ATP's equality. *) 
292 
fun make_fixed_const @{const_name HOL.eq} = tptp_old_equal 

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 make_fixed_const c = const_prefix ^ lookup_const c 
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fun make_fixed_type_const c = type_const_prefix ^ lookup_const c 
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fun make_type_class clas = class_prefix ^ ascii_of clas 
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43093  299 
fun new_skolem_var_name_from_const s = 
300 
let val ss = s > space_explode Long_Name.separator in 

301 
nth ss (length ss  2) 

302 
end 

303 

304 
(* The number of type arguments of a constant, zero if it's monomorphic. For 

305 
(instances of) Skolem pseudoconstants, this information is encoded in the 

306 
constant name. *) 

307 
fun num_type_args thy s = 

308 
if String.isPrefix skolem_const_prefix s then 

309 
s > space_explode Long_Name.separator > List.last > Int.fromString > the 

310 
else 

311 
(s, Sign.the_const_type thy s) > Sign.const_typargs thy > length 

312 

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(* These are either simplified away by "Meson.presimplify" (most of the time) or 
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handled specially via "fFalse", "fTrue", ..., "fequal". *) 
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val atp_irrelevant_consts = 
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[@{const_name False}, @{const_name True}, @{const_name Not}, 
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@{const_name conj}, @{const_name disj}, @{const_name implies}, 
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@{const_name HOL.eq}, @{const_name If}, @{const_name Let}] 
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319 

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val atp_monomorph_bad_consts = 
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atp_irrelevant_consts @ 
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(* These are ignored anyway by the relevance filter (unless they appear in 
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higherorder places) but not by the monomorphizer. *) 
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[@{const_name all}, @{const_name "==>"}, @{const_name "=="}, 
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@{const_name Trueprop}, @{const_name All}, @{const_name Ex}, 
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@{const_name Ex1}, @{const_name Ball}, @{const_name Bex}] 
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fun add_schematic_const (x as (_, T)) = 
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Monomorph.typ_has_tvars T ? Symtab.insert_list (op =) x 
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val add_schematic_consts_of = 
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Term.fold_aterms (fn Const (x as (s, _)) => 
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not (member (op =) atp_monomorph_bad_consts s) 
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? add_schematic_const x 
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 _ => I) 
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fun atp_schematic_consts_of t = add_schematic_consts_of t Symtab.empty 
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336 

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(** Definitions and functions for FOL clauses and formulas for TPTP **) 
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(* The first component is the type class; the second is a "TVar" or "TFree". *) 
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datatype type_literal = 
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TyLitVar of name * name  
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TyLitFree of name * name 
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(** Isabelle arities **) 
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datatype arity_literal = 
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TConsLit of name * name * name list  
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TVarLit of name * name 
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350 

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fun gen_TVars 0 = [] 
43093  352 
 gen_TVars n = ("T_" ^ string_of_int n) :: gen_TVars (n1) 
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353 

43263  354 
val type_class = the_single @{sort type} 
355 

356 
fun add_packed_sort tvar = 

357 
fold (fn s => s <> type_class ? cons (`make_type_class s, `I tvar)) 

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43086  359 
type arity_clause = 
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{name : string, 
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prem_lits : arity_literal list, 
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concl_lits : arity_literal} 
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363 

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(* Arity of type constructor "tcon :: (arg1, ..., argN) res" *) 
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fun make_axiom_arity_clause (tcons, name, (cls, args)) = 
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let 
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val tvars = gen_TVars (length args) 
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val tvars_srts = ListPair.zip (tvars, args) 
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in 
43086  370 
{name = name, 
43263  371 
prem_lits = [] > fold (uncurry add_packed_sort) tvars_srts > map TVarLit, 
43086  372 
concl_lits = TConsLit (`make_type_class cls, 
373 
`make_fixed_type_const tcons, 

374 
tvars ~~ tvars)} 

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375 
end 
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376 

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fun arity_clause _ _ (_, []) = [] 
43495  378 
 arity_clause seen n (tcons, ("HOL.type", _) :: ars) = (* ignore *) 
379 
arity_clause seen n (tcons, ars) 

380 
 arity_clause seen n (tcons, (ar as (class, _)) :: ars) = 

381 
if member (op =) seen class then 

382 
(* multiple arities for the same (tycon, class) pair *) 

383 
make_axiom_arity_clause (tcons, 

384 
lookup_const tcons ^ "___" ^ ascii_of class ^ "_" ^ string_of_int n, 

385 
ar) :: 

386 
arity_clause seen (n + 1) (tcons, ars) 

387 
else 

388 
make_axiom_arity_clause (tcons, lookup_const tcons ^ "___" ^ 

389 
ascii_of class, ar) :: 

390 
arity_clause (class :: seen) n (tcons, ars) 

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391 

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392 
fun multi_arity_clause [] = [] 
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393 
 multi_arity_clause ((tcons, ars) :: tc_arlists) = 
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arity_clause [] 1 (tcons, ars) @ multi_arity_clause tc_arlists 
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395 

43622  396 
(* Generate all pairs (tycon, class, sorts) such that tycon belongs to class in 
397 
theory thy provided its arguments have the corresponding sorts. *) 

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398 
fun type_class_pairs thy tycons classes = 
43093  399 
let 
400 
val alg = Sign.classes_of thy 

401 
fun domain_sorts tycon = Sorts.mg_domain alg tycon o single 

402 
fun add_class tycon class = 

403 
cons (class, domain_sorts tycon class) 

404 
handle Sorts.CLASS_ERROR _ => I 

405 
fun try_classes tycon = (tycon, fold (add_class tycon) classes []) 

406 
in map try_classes tycons end 

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407 

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408 
(*Proving one (tycon, class) membership may require proving others, so iterate.*) 
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409 
fun iter_type_class_pairs _ _ [] = ([], []) 
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410 
 iter_type_class_pairs thy tycons classes = 
43263  411 
let 
412 
fun maybe_insert_class s = 

413 
(s <> type_class andalso not (member (op =) classes s)) 

414 
? insert (op =) s 

415 
val cpairs = type_class_pairs thy tycons classes 

416 
val newclasses = 

417 
[] > fold (fold (fold (fold maybe_insert_class) o snd) o snd) cpairs 

418 
val (classes', cpairs') = iter_type_class_pairs thy tycons newclasses 

43266  419 
in (classes' @ classes, union (op =) cpairs' cpairs) end 
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420 

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421 
fun make_arity_clauses thy tycons = 
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422 
iter_type_class_pairs thy tycons ##> multi_arity_clause 
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423 

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424 

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425 
(** Isabelle class relations **) 
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426 

43086  427 
type class_rel_clause = 
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428 
{name : string, 
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429 
subclass : name, 
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430 
superclass : name} 
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431 

43622  432 
(* Generate all pairs (sub, super) such that sub is a proper subclass of super 
433 
in theory "thy". *) 

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434 
fun class_pairs _ [] _ = [] 
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435 
 class_pairs thy subs supers = 
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436 
let 
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437 
val class_less = Sorts.class_less (Sign.classes_of thy) 
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438 
fun add_super sub super = class_less (sub, super) ? cons (sub, super) 
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439 
fun add_supers sub = fold (add_super sub) supers 
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440 
in fold add_supers subs [] end 
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441 

43622  442 
fun make_class_rel_clause (sub, super) = 
443 
{name = sub ^ "_" ^ super, subclass = `make_type_class sub, 

43086  444 
superclass = `make_type_class super} 
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445 

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446 
fun make_class_rel_clauses thy subs supers = 
43093  447 
map make_class_rel_clause (class_pairs thy subs supers) 
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448 

43859  449 
(* intermediate terms *) 
450 
datatype iterm = 

451 
IConst of name * typ * typ list  

452 
IVar of name * typ  

453 
IApp of iterm * iterm  

454 
IAbs of (name * typ) * iterm 

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455 

43859  456 
fun ityp_of (IConst (_, T, _)) = T 
457 
 ityp_of (IVar (_, T)) = T 

458 
 ityp_of (IApp (t1, _)) = snd (dest_funT (ityp_of t1)) 

459 
 ityp_of (IAbs ((_, T), tm)) = T > ityp_of tm 

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460 

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parents:
43064
diff
changeset

461 
(*gets the head of a combinator application, along with the list of arguments*) 
43859  462 
fun strip_iterm_comb u = 
43496
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

463 
let 
43859  464 
fun stripc (IApp (t, u), ts) = stripc (t, u :: ts) 
43496
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
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diff
changeset

465 
 stripc x = x 
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

466 
in stripc (u, []) end 
43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

467 

0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
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diff
changeset

468 
fun atyps_of T = fold_atyps (insert (op =)) T [] 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

469 

0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

470 
fun new_skolem_const_name s num_T_args = 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

471 
[new_skolem_const_prefix, s, string_of_int num_T_args] 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

472 
> space_implode Long_Name.separator 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
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diff
changeset

473 

43859  474 
(* Converts an Isabelle/HOL term (with combinators) into an intermediate term. 
475 
Also accumulates sort infomation. *) 

476 
fun iterm_from_term thy bs (P $ Q) = 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

477 
let 
43859  478 
val (P', P_atomics_Ts) = iterm_from_term thy bs P 
479 
val (Q', Q_atomics_Ts) = iterm_from_term thy bs Q 

480 
in (IApp (P', Q'), union (op =) P_atomics_Ts Q_atomics_Ts) end 

481 
 iterm_from_term thy _ (Const (c, T)) = 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

482 
let 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

483 
val tvar_list = 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

484 
(if String.isPrefix old_skolem_const_prefix c then 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

485 
[] > Term.add_tvarsT T > map TVar 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

486 
else 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

487 
(c, T) > Sign.const_typargs thy) 
43859  488 
val c' = IConst (`make_fixed_const c, T, tvar_list) 
43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

489 
in (c', atyps_of T) end 
43859  490 
 iterm_from_term _ _ (Free (v, T)) = 
491 
(IConst (`make_fixed_var v, T, []), atyps_of T) 

492 
 iterm_from_term _ _ (Var (v as (s, _), T)) = 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

493 
(if String.isPrefix Meson_Clausify.new_skolem_var_prefix s then 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

494 
let 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

495 
val Ts = T > strip_type > swap > op :: 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

496 
val s' = new_skolem_const_name s (length Ts) 
43859  497 
in IConst (`make_fixed_const s', T, Ts) end 
43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

498 
else 
43859  499 
IVar ((make_schematic_var v, s), T), atyps_of T) 
500 
 iterm_from_term _ bs (Bound j) = 

501 
nth bs j > (fn (s, T) => (IConst (`make_bound_var s, T, []), atyps_of T)) 

502 
 iterm_from_term thy bs (Abs (s, T, t)) = 

43678  503 
let 
504 
fun vary s = s > AList.defined (op =) bs s ? vary o Symbol.bump_string 

505 
val s = vary s 

43859  506 
val (tm, atomic_Ts) = iterm_from_term thy ((s, T) :: bs) t 
43678  507 
in 
43859  508 
(IAbs ((`make_bound_var s, T), tm), 
43677  509 
union (op =) atomic_Ts (atyps_of T)) 
510 
end 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

511 

43421  512 
datatype locality = 
513 
General  Helper  Extensionality  Intro  Elim  Simp  Local  Assum  

514 
Chained 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

515 

0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

516 
(* (quasi)underapproximation of the truth *) 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

517 
fun is_locality_global Local = false 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
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parents:
43064
diff
changeset

518 
 is_locality_global Assum = false 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

519 
 is_locality_global Chained = false 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

520 
 is_locality_global _ = true 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

521 

43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

522 
datatype order = First_Order  Higher_Order 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

523 
datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

524 
datatype type_level = 
43362  525 
All_Types  Noninf_Nonmono_Types  Fin_Nonmono_Types  Const_Arg_Types  
526 
No_Types 

43128  527 
datatype type_heaviness = Heavyweight  Lightweight 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

528 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

529 
datatype type_enc = 
43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

530 
Simple_Types of order * type_level  
42837  531 
Preds of polymorphism * type_level * type_heaviness  
532 
Tags of polymorphism * type_level * type_heaviness 

42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

533 

42689
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
blanchet
parents:
42688
diff
changeset

534 
fun try_unsuffixes ss s = 
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
blanchet
parents:
42688
diff
changeset

535 
fold (fn s' => fn NONE => try (unsuffix s') s  some => some) ss NONE 
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
blanchet
parents:
42688
diff
changeset

536 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

537 
fun type_enc_from_string s = 
42722  538 
(case try (unprefix "poly_") s of 
539 
SOME s => (SOME Polymorphic, s) 

42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

540 
 NONE => 
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

541 
case try (unprefix "mono_") s of 
42722  542 
SOME s => (SOME Monomorphic, s) 
543 
 NONE => 

544 
case try (unprefix "mangled_") s of 

545 
SOME s => (SOME Mangled_Monomorphic, s) 

546 
 NONE => (NONE, s)) 

42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

547 
> (fn s => 
43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

548 
(* "_query" and "_bang" are for the ASCIIchallenged Metis and 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

549 
Mirabelle. *) 
42689
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
blanchet
parents:
42688
diff
changeset

550 
case try_unsuffixes ["?", "_query"] s of 
43362  551 
SOME s => (Noninf_Nonmono_Types, s) 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

552 
 NONE => 
42689
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
blanchet
parents:
42688
diff
changeset

553 
case try_unsuffixes ["!", "_bang"] s of 
43362  554 
SOME s => (Fin_Nonmono_Types, s) 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

555 
 NONE => (All_Types, s)) 
42828  556 
> apsnd (fn s => 
42837  557 
case try (unsuffix "_heavy") s of 
43128  558 
SOME s => (Heavyweight, s) 
559 
 NONE => (Lightweight, s)) 

42837  560 
> (fn (poly, (level, (heaviness, core))) => 
561 
case (core, (poly, level, heaviness)) of 

43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

562 
("simple", (NONE, _, Lightweight)) => 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

563 
Simple_Types (First_Order, level) 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

564 
 ("simple_higher", (NONE, _, Lightweight)) => 
43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

565 
if level = Noninf_Nonmono_Types then raise Same.SAME 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

566 
else Simple_Types (Higher_Order, level) 
42854
d99167ac4f8a
since we always default on the "_light" encoding (for good reasons, according to Judgment Day), get rid of that suffix
blanchet
parents:
42852
diff
changeset

567 
 ("preds", (SOME poly, _, _)) => Preds (poly, level, heaviness) 
42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

568 
 ("tags", (SOME Polymorphic, _, _)) => 
43361
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

569 
Tags (Polymorphic, level, heaviness) 
42854
d99167ac4f8a
since we always default on the "_light" encoding (for good reasons, according to Judgment Day), get rid of that suffix
blanchet
parents:
42852
diff
changeset

570 
 ("tags", (SOME poly, _, _)) => Tags (poly, level, heaviness) 
43128  571 
 ("args", (SOME poly, All_Types (* naja *), Lightweight)) => 
572 
Preds (poly, Const_Arg_Types, Lightweight) 

573 
 ("erased", (NONE, All_Types (* naja *), Lightweight)) => 

574 
Preds (Polymorphic, No_Types, Lightweight) 

42753
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

575 
 _ => raise Same.SAME) 
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

576 
handle Same.SAME => error ("Unknown type system: " ^ quote s ^ ".") 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

577 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

578 
fun is_type_enc_higher_order (Simple_Types (Higher_Order, _)) = true 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

579 
 is_type_enc_higher_order _ = false 
43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

580 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

581 
fun polymorphism_of_type_enc (Simple_Types _) = Mangled_Monomorphic 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

582 
 polymorphism_of_type_enc (Preds (poly, _, _)) = poly 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

583 
 polymorphism_of_type_enc (Tags (poly, _, _)) = poly 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

584 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

585 
fun level_of_type_enc (Simple_Types (_, level)) = level 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

586 
 level_of_type_enc (Preds (_, level, _)) = level 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

587 
 level_of_type_enc (Tags (_, level, _)) = level 
42828  588 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

589 
fun heaviness_of_type_enc (Simple_Types _) = Heavyweight 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

590 
 heaviness_of_type_enc (Preds (_, _, heaviness)) = heaviness 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

591 
 heaviness_of_type_enc (Tags (_, _, heaviness)) = heaviness 
42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

592 

42687  593 
fun is_type_level_virtually_sound level = 
43362  594 
level = All_Types orelse level = Noninf_Nonmono_Types 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

595 
val is_type_enc_virtually_sound = 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

596 
is_type_level_virtually_sound o level_of_type_enc 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

597 

23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

598 
fun is_type_level_fairly_sound level = 
43362  599 
is_type_level_virtually_sound level orelse level = Fin_Nonmono_Types 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

600 
val is_type_enc_fairly_sound = is_type_level_fairly_sound o level_of_type_enc 
42613
23b13b1bd565
use strings to encode type systems in ATP module, to reduce the amount of outofplace information and also to make it easier to print the type system used
blanchet
parents:
42612
diff
changeset

601 

43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

602 
fun choose_format formats (Simple_Types (order, level)) = 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

603 
if member (op =) formats THF then 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

604 
(THF, Simple_Types (order, level)) 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

605 
else if member (op =) formats TFF then 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

606 
(TFF, Simple_Types (First_Order, level)) 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

607 
else 
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

608 
choose_format formats (Preds (Mangled_Monomorphic, level, Heavyweight)) 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

609 
 choose_format formats type_enc = 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

610 
(case hd formats of 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

611 
CNF_UEQ => 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

612 
(CNF_UEQ, case type_enc of 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

613 
Preds stuff => 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

614 
(if is_type_enc_fairly_sound type_enc then Tags else Preds) 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

615 
stuff 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

616 
 _ => type_enc) 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

617 
 format => (format, type_enc)) 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

618 

40114  619 
type translated_formula = 
43496
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

620 
{name : string, 
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

621 
locality : locality, 
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

622 
kind : formula_kind, 
43859  623 
iformula : (name, typ, iterm) formula, 
43496
92f5a4c78b37
remove historical bloat  another benefit of merging Metis's and Sledgehammer's translations
blanchet
parents:
43495
diff
changeset

624 
atomic_types : typ list} 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

625 

43859  626 
fun update_iformula f ({name, locality, kind, iformula, atomic_types} 
627 
: translated_formula) = 

628 
{name = name, locality = locality, kind = kind, iformula = f iformula, 

42562  629 
atomic_types = atomic_types} : translated_formula 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

630 

43859  631 
fun fact_lift f ({iformula, ...} : translated_formula) = f iformula 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

632 

43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

633 
val type_instance = Sign.typ_instance o Proof_Context.theory_of 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

634 

b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

635 
fun insert_type ctxt get_T x xs = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

636 
let val T = get_T x in 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

637 
if exists (curry (type_instance ctxt) T o get_T) xs then xs 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

638 
else x :: filter_out (curry (type_instance ctxt o swap) T o get_T) xs 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

639 
end 
42677
25496cd3c199
monotonic type inference in ATP Sledgehammer problems  based on Claessen & al.'s CADE 2011 paper, Sect. 2.3.
blanchet
parents:
42675
diff
changeset

640 

42753
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

641 
(* The Booleans indicate whether all type arguments should be kept. *) 
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

642 
datatype type_arg_policy = 
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

643 
Explicit_Type_Args of bool  
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

644 
Mangled_Type_Args of bool  
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

645 
No_Type_Args 
41136
30bedf58b177
implemented new type system encoding "overload_args", which is more lightweight than "const_args" (the unsound default) and hopefully almost as sound
blanchet
parents:
41134
diff
changeset

646 

42836  647 
fun should_drop_arg_type_args (Simple_Types _) = 
648 
false (* since TFF doesn't support overloading *) 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

649 
 should_drop_arg_type_args type_enc = 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

650 
level_of_type_enc type_enc = All_Types andalso 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

651 
heaviness_of_type_enc type_enc = Heavyweight 
42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

652 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

653 
fun type_arg_policy type_enc s = 
43628
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

654 
if s = type_tag_name then 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

655 
(if polymorphism_of_type_enc type_enc = Mangled_Monomorphic then 
43623  656 
Mangled_Type_Args 
657 
else 

658 
Explicit_Type_Args) false 

43628
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

659 
else case type_enc of 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

660 
Tags (_, All_Types, Heavyweight) => No_Type_Args 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

661 
 _ => 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

662 
if level_of_type_enc type_enc = No_Types orelse 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

663 
s = @{const_name HOL.eq} orelse 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

664 
(s = app_op_name andalso 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

665 
level_of_type_enc type_enc = Const_Arg_Types) then 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

666 
No_Type_Args 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

667 
else 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

668 
should_drop_arg_type_args type_enc 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

669 
> (if polymorphism_of_type_enc type_enc = Mangled_Monomorphic then 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

670 
Mangled_Type_Args 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

671 
else 
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

672 
Explicit_Type_Args) 
42227
662b50b7126f
if "monomorphize" is enabled, mangle the type information in the names by default
blanchet
parents:
42180
diff
changeset

673 

43628
996b2022ff78
further repair "mangled_tags", now that tags are also mangled
blanchet
parents:
43626
diff
changeset

674 
(* Make literals for sorted type variables. *) 
43263  675 
fun generic_add_sorts_on_type (_, []) = I 
676 
 generic_add_sorts_on_type ((x, i), s :: ss) = 

677 
generic_add_sorts_on_type ((x, i), ss) 

678 
#> (if s = the_single @{sort HOL.type} then 

43093  679 
I 
680 
else if i = ~1 then 

43263  681 
insert (op =) (TyLitFree (`make_type_class s, `make_fixed_type_var x)) 
43093  682 
else 
43263  683 
insert (op =) (TyLitVar (`make_type_class s, 
684 
(make_schematic_type_var (x, i), x)))) 

685 
fun add_sorts_on_tfree (TFree (s, S)) = generic_add_sorts_on_type ((s, ~1), S) 

686 
 add_sorts_on_tfree _ = I 

687 
fun add_sorts_on_tvar (TVar z) = generic_add_sorts_on_type z 

688 
 add_sorts_on_tvar _ = I 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

689 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

690 
fun type_literals_for_types type_enc add_sorts_on_typ Ts = 
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

691 
[] > level_of_type_enc type_enc <> No_Types ? fold add_sorts_on_typ Ts 
41137
8b634031b2a5
implemented "no_types" encoding, which is too unsound to be useful but can come in handy for evaluations
blanchet
parents:
41136
diff
changeset

692 

42534
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

693 
fun mk_aconns c phis = 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

694 
let val (phis', phi') = split_last phis in 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

695 
fold_rev (mk_aconn c) phis' phi' 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

696 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

697 
fun mk_ahorn [] phi = phi 
42534
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

698 
 mk_ahorn phis psi = AConn (AImplies, [mk_aconns AAnd phis, psi]) 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

699 
fun mk_aquant _ [] phi = phi 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

700 
 mk_aquant q xs (phi as AQuant (q', xs', phi')) = 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

701 
if q = q' then AQuant (q, xs @ xs', phi') else AQuant (q, xs, phi) 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

702 
 mk_aquant q xs phi = AQuant (q, xs, phi) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

703 

42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

704 
fun close_universally atom_vars phi = 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

705 
let 
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

706 
fun formula_vars bounds (AQuant (_, xs, phi)) = 
42526  707 
formula_vars (map fst xs @ bounds) phi 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

708 
 formula_vars bounds (AConn (_, phis)) = fold (formula_vars bounds) phis 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

709 
 formula_vars bounds (AAtom tm) = 
42526  710 
union (op =) (atom_vars tm [] 
711 
> filter_out (member (op =) bounds o fst)) 

42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

712 
in mk_aquant AForall (formula_vars [] phi []) phi end 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

713 

43859  714 
fun iterm_vars (IApp (tm1, tm2)) = fold iterm_vars [tm1, tm2] 
715 
 iterm_vars (IConst _) = I 

716 
 iterm_vars (IVar (name, T)) = insert (op =) (name, SOME T) 

717 
 iterm_vars (IAbs (_, tm)) = iterm_vars tm 

718 
fun close_iformula_universally phi = close_universally iterm_vars phi 

42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

719 

43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

720 
fun term_vars bounds (ATerm (name as (s, _), tms)) = 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

721 
(is_tptp_variable s andalso not (member (op =) bounds name)) 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

722 
? insert (op =) (name, NONE) #> fold (term_vars bounds) tms 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

723 
 term_vars bounds (AAbs ((name, _), tm)) = term_vars (name :: bounds) tm 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

724 
fun close_formula_universally phi = close_universally (term_vars []) phi 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

725 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

726 
val homo_infinite_type_name = @{type_name ind} (* any infinite type *) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

727 
val homo_infinite_type = Type (homo_infinite_type_name, []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

728 

43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

729 
fun ho_term_from_typ format type_enc = 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

730 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

731 
fun term (Type (s, Ts)) = 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

732 
ATerm (case (is_type_enc_higher_order type_enc, s) of 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

733 
(true, @{type_name bool}) => `I tptp_bool_type 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

734 
 (true, @{type_name fun}) => `I tptp_fun_type 
43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

735 
 _ => if s = homo_infinite_type_name andalso 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

736 
(format = TFF orelse format = THF) then 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

737 
`I tptp_individual_type 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

738 
else 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

739 
`make_fixed_type_const s, 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

740 
map term Ts) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

741 
 term (TFree (s, _)) = ATerm (`make_fixed_type_var s, []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

742 
 term (TVar ((x as (s, _)), _)) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

743 
ATerm ((make_schematic_type_var x, s), []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

744 
in term end 
42562  745 

43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

746 
fun ho_term_for_type_arg format type_enc T = 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

747 
if T = dummyT then NONE else SOME (ho_term_from_typ format type_enc T) 
43401
e93dfcb53535
fixed soundness bug made more visible by previous change
blanchet
parents:
43399
diff
changeset

748 

42562  749 
(* This shouldn't clash with anything else. *) 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

750 
val mangled_type_sep = "\000" 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

751 

42562  752 
fun generic_mangled_type_name f (ATerm (name, [])) = f name 
753 
 generic_mangled_type_name f (ATerm (name, tys)) = 

42761
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42755
diff
changeset

754 
f name ^ "(" ^ space_implode "," (map (generic_mangled_type_name f) tys) 
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42755
diff
changeset

755 
^ ")" 
43692  756 
 generic_mangled_type_name _ _ = raise Fail "unexpected type abstraction" 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

757 

42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

758 
val bool_atype = AType (`I tptp_bool_type) 
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

759 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

760 
fun make_simple_type s = 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

761 
if s = tptp_bool_type orelse s = tptp_fun_type orelse 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

762 
s = tptp_individual_type then 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

763 
s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

764 
else 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

765 
simple_type_prefix ^ ascii_of s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

766 

43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

767 
fun ho_type_from_ho_term type_enc pred_sym ary = 
42963  768 
let 
769 
fun to_atype ty = 

770 
AType ((make_simple_type (generic_mangled_type_name fst ty), 

771 
generic_mangled_type_name snd ty)) 

772 
fun to_afun f1 f2 tys = AFun (f1 (hd tys), f2 (nth tys 1)) 

42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

773 
fun to_fo 0 ty = if pred_sym then bool_atype else to_atype ty 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

774 
 to_fo ary (ATerm (_, tys)) = to_afun to_atype (to_fo (ary  1)) tys 
43692  775 
 to_fo _ _ = raise Fail "unexpected type abstraction" 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

776 
fun to_ho (ty as ATerm ((s, _), tys)) = 
43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

777 
if s = tptp_fun_type then to_afun to_ho to_ho tys else to_atype ty 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

778 
 to_ho _ = raise Fail "unexpected type abstraction" 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

779 
in if is_type_enc_higher_order type_enc then to_ho else to_fo ary end 
42963  780 

43677  781 
fun ho_type_from_typ format type_enc pred_sym ary = 
43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

782 
ho_type_from_ho_term type_enc pred_sym ary 
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

783 
o ho_term_from_typ format type_enc 
42963  784 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

785 
fun mangled_const_name format type_enc T_args (s, s') = 
42963  786 
let 
43676
3b0b448b4d69
add support for lambdas in TPTP THF generator + killed an unsound type encoding (because the monotonicity calculus assumes firstorder)
nik
parents:
43628
diff
changeset

787 
val ty_args = T_args > map_filter (ho_term_for_type_arg format type_enc) 
42963  788 
fun type_suffix f g = 
789 
fold_rev (curry (op ^) o g o prefix mangled_type_sep 

790 
o generic_mangled_type_name f) ty_args "" 

791 
in (s ^ type_suffix fst ascii_of, s' ^ type_suffix snd I) end 

42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

792 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

793 
val parse_mangled_ident = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

794 
Scan.many1 (not o member (op =) ["(", ")", ","]) >> implode 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

795 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

796 
fun parse_mangled_type x = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

797 
(parse_mangled_ident 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

798 
 Scan.optional ($$ "("  Scan.optional parse_mangled_types []  $$ ")") 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

799 
[] >> ATerm) x 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

800 
and parse_mangled_types x = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

801 
(parse_mangled_type ::: Scan.repeat ($$ ","  parse_mangled_type)) x 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

802 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

803 
fun unmangled_type s = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

804 
s > suffix ")" > raw_explode 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

805 
> Scan.finite Symbol.stopper 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

806 
(Scan.error (!! (fn _ => raise Fail ("unrecognized mangled type " ^ 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

807 
quote s)) parse_mangled_type)) 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

808 
> fst 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

809 

42561
23ddc4e3d19c
have properly typeinstantiated helper facts (combinators and If)
blanchet
parents:
42560
diff
changeset

810 
val unmangled_const_name = space_explode mangled_type_sep #> hd 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

811 
fun unmangled_const s = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

812 
let val ss = space_explode mangled_type_sep s in 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

813 
(hd ss, map unmangled_type (tl ss)) 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

814 
end 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

815 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

816 
fun introduce_proxies type_enc = 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

817 
let 
43859  818 
fun intro top_level (IApp (tm1, tm2)) = 
819 
IApp (intro top_level tm1, intro false tm2) 

820 
 intro top_level (IConst (name as (s, _), T, T_args)) = 

42570
77f94ac04f32
cleanup proxification/unproxification and make sure that "num_atp_type_args" is called on the proxy in the reconstruction code, since "c_fequal" has one type arg but the unproxified equal has 0
blanchet
parents:
42569
diff
changeset

821 
(case proxify_const s of 
43159
29b55f292e0b
added support for helpers in new Metis, so far only for polymorphic type encodings
blanchet
parents:
43139
diff
changeset

822 
SOME proxy_base => 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

823 
if top_level orelse is_type_enc_higher_order type_enc then 
43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

824 
case (top_level, s) of 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

825 
(_, "c_False") => (`I tptp_false, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

826 
 (_, "c_True") => (`I tptp_true, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

827 
 (false, "c_Not") => (`I tptp_not, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

828 
 (false, "c_conj") => (`I tptp_and, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

829 
 (false, "c_disj") => (`I tptp_or, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

830 
 (false, "c_implies") => (`I tptp_implies, []) 
43678  831 
 (false, "c_All") => (`I tptp_ho_forall, []) 
832 
 (false, "c_Ex") => (`I tptp_ho_exists, []) 

43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

833 
 (false, s) => 
43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

834 
if is_tptp_equal s then (`I tptp_equal, []) 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

835 
else (proxy_base >> prefix const_prefix, T_args) 
43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

836 
 _ => (name, []) 
42569
5737947e4c77
make sure that fequal keeps its type arguments for mangled type systems
blanchet
parents:
42568
diff
changeset

837 
else 
42574  838 
(proxy_base >> prefix const_prefix, T_args) 
839 
 NONE => (name, T_args)) 

43859  840 
> (fn (name, T_args) => IConst (name, T, T_args)) 
841 
 intro _ (IAbs (bound, tm)) = IAbs (bound, intro false tm) 

43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

842 
 intro _ tm = tm 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

843 
in intro true end 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

844 

43859  845 
fun iformula_from_prop thy type_enc eq_as_iff = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

846 
let 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

847 
fun do_term bs t atomic_types = 
43859  848 
iterm_from_term thy bs (Envir.eta_contract t) 
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

849 
>> (introduce_proxies type_enc #> AAtom) 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

850 
> union (op =) atomic_types 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

851 
fun do_quant bs q s T t' = 
43324
2b47822868e4
discontinued Name.variant to emphasize that this is oldstyle / indirect;
wenzelm
parents:
43304
diff
changeset

852 
let val s = singleton (Name.variant_list (map fst bs)) s in 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

853 
do_formula ((s, T) :: bs) t' 
42562  854 
#>> mk_aquant q [(`make_bound_var s, SOME T)] 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

855 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

856 
and do_conn bs c t1 t2 = 
43198  857 
do_formula bs t1 ##>> do_formula bs t2 #>> uncurry (mk_aconn c) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

858 
and do_formula bs t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

859 
case t of 
43096  860 
@{const Trueprop} $ t1 => do_formula bs t1 
861 
 @{const Not} $ t1 => do_formula bs t1 #>> mk_anot 

38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

862 
 Const (@{const_name All}, _) $ Abs (s, T, t') => 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

863 
do_quant bs AForall s T t' 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

864 
 Const (@{const_name Ex}, _) $ Abs (s, T, t') => 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

865 
do_quant bs AExists s T t' 
38795
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

866 
 @{const HOL.conj} $ t1 $ t2 => do_conn bs AAnd t1 t2 
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

867 
 @{const HOL.disj} $ t1 $ t2 => do_conn bs AOr t1 t2 
38786
e46e7a9cb622
formerly unnamed infix impliciation now named HOL.implies
haftmann
parents:
38752
diff
changeset

868 
 @{const HOL.implies} $ t1 $ t2 => do_conn bs AImplies t1 t2 
38864
4abe644fcea5
formerly unnamed infix equality now named HOL.eq
haftmann
parents:
38829
diff
changeset

869 
 Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])) $ t1 $ t2 => 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

870 
if eq_as_iff then do_conn bs AIff t1 t2 else do_term bs t 
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

871 
 _ => do_term bs t 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

872 
in do_formula [] end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

873 

43264
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

874 
fun presimplify_term _ [] t = t 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

875 
 presimplify_term ctxt presimp_consts t = 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

876 
t > exists_Const (member (op =) presimp_consts o fst) t 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

877 
? (Skip_Proof.make_thm (Proof_Context.theory_of ctxt) 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

878 
#> Meson.presimplify ctxt 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

879 
#> prop_of) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

880 

43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

881 
fun concealed_bound_name j = atp_weak_prefix ^ string_of_int j 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

882 
fun conceal_bounds Ts t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

883 
subst_bounds (map (Free o apfst concealed_bound_name) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

884 
(0 upto length Ts  1 ~~ Ts), t) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

885 
fun reveal_bounds Ts = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

886 
subst_atomic (map (fn (j, T) => (Free (concealed_bound_name j, T), Bound j)) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

887 
(0 upto length Ts  1 ~~ Ts)) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

888 

43265  889 
fun is_fun_equality (@{const_name HOL.eq}, 
890 
Type (_, [Type (@{type_name fun}, _), _])) = true 

891 
 is_fun_equality _ = false 

892 

42747
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

893 
fun extensionalize_term ctxt t = 
43265  894 
if exists_Const is_fun_equality t then 
895 
let val thy = Proof_Context.theory_of ctxt in 

896 
t > cterm_of thy > Meson.extensionalize_conv ctxt 

897 
> prop_of > Logic.dest_equals > snd 

898 
end 

899 
else 

900 
t 

38608
01ed56c46259
beta eta contract the Sledgehammer conjecture (and also the axioms, although this might not be needed), just like Metis does (implicitly);
blanchet
parents:
38606
diff
changeset

901 

43862  902 
fun simple_translate_lambdas do_lambdas ctxt t = 
43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

903 
let val thy = Proof_Context.theory_of ctxt in 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

904 
if Meson.is_fol_term thy t then 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

905 
t 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

906 
else 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

907 
let 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

908 
fun aux Ts t = 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

909 
case t of 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

910 
@{const Not} $ t1 => @{const Not} $ aux Ts t1 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

911 
 (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

912 
t0 $ Abs (s, T, aux (T :: Ts) t') 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

913 
 (t0 as Const (@{const_name All}, _)) $ t1 => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

914 
aux Ts (t0 $ eta_expand Ts t1 1) 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

915 
 (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

916 
t0 $ Abs (s, T, aux (T :: Ts) t') 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

917 
 (t0 as Const (@{const_name Ex}, _)) $ t1 => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

918 
aux Ts (t0 $ eta_expand Ts t1 1) 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

919 
 (t0 as @{const HOL.conj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

920 
 (t0 as @{const HOL.disj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

921 
 (t0 as @{const HOL.implies}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

922 
 (t0 as Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _]))) 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

923 
$ t1 $ t2 => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

924 
t0 $ aux Ts t1 $ aux Ts t2 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

925 
 _ => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

926 
if not (exists_subterm (fn Abs _ => true  _ => false) t) then t 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

927 
else t > Envir.eta_contract > do_lambdas ctxt Ts 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

928 
val (t, ctxt') = Variable.import_terms true [t] ctxt >> the_single 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

929 
in t > aux [] > singleton (Variable.export_terms ctxt' ctxt) end 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

930 
end 
43856
d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

931 

d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

932 
fun do_conceal_lambdas Ts (t1 $ t2) = 
d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

933 
do_conceal_lambdas Ts t1 $ do_conceal_lambdas Ts t2 
d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

934 
 do_conceal_lambdas Ts (Abs (_, T, t)) = 
43828
e07a2c4cbad8
move lambda translation option from ATP to Sledgehammer, to avoid accidentally breaking Metis (its reconstruction code can only deal with combinators)
blanchet
parents:
43827
diff
changeset

935 
(* slightly unsound because of hash collisions *) 
43827
62d64709af3b
added option to control which lambda translation to use (for experiments)
blanchet
parents:
43693
diff
changeset

936 
Free (concealed_lambda_prefix ^ string_of_int (hash_term t), 
62d64709af3b
added option to control which lambda translation to use (for experiments)
blanchet
parents:
43693
diff
changeset

937 
T > fastype_of1 (Ts, t)) 
43856
d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

938 
 do_conceal_lambdas _ t = t 
43862  939 
val conceal_lambdas = simple_translate_lambdas (K do_conceal_lambdas) 
43856
d636b053d4ff
move more lambdahandling logic to Sledgehammer, from ATP module, for formal dependency reasons
blanchet
parents:
43830
diff
changeset

940 

43862  941 
fun do_introduce_combinators ctxt Ts t = 
42361  942 
let val thy = Proof_Context.theory_of ctxt in 
43862  943 
t > conceal_bounds Ts 
944 
> cterm_of thy 

945 
> Meson_Clausify.introduce_combinators_in_cterm 

946 
> prop_of > Logic.dest_equals > snd 

947 
> reveal_bounds Ts 

38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

948 
end 
43862  949 
(* A type variable of sort "{}" will make abstraction fail. *) 
950 
handle THM _ => do_conceal_lambdas Ts t 

951 
val introduce_combinators = simple_translate_lambdas do_introduce_combinators 

952 

43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

953 
fun preprocess_abstractions_in_terms ctxt trans_lambdas facts = 
43862  954 
let 
43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

955 
val (facts, lambda_ts) = 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

956 
facts > map (snd o snd) > trans_lambdas 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

957 
>> map2 (fn (name, (kind, _)) => fn t => (name, (kind, t))) facts 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

958 
val lambda_facts = 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

959 
map2 (fn t => fn j => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

960 
((lambda_fact_prefix ^ Int.toString j, Helper), (Axiom, t))) 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

961 
lambda_ts (1 upto length lambda_ts) 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

962 
in (facts, lambda_facts) end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

963 

319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

964 
(* Metis's use of "resolve_tac" freezes the schematic variables. We simulate the 
42353
7797efa897a1
correctly handle TFrees that occur in (local) facts  Metis did the right thing here but Sledgehammer was incorrectly generating spurious preconditions such as "dense_linorder(t_a)"
blanchet
parents:
42237
diff
changeset

965 
same in Sledgehammer to prevent the discovery of unreplayable proofs. *) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

966 
fun freeze_term t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

967 
let 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

968 
fun aux (t $ u) = aux t $ aux u 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

969 
 aux (Abs (s, T, t)) = Abs (s, T, aux t) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

970 
 aux (Var ((s, i), T)) = 
43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

971 
Free (atp_weak_prefix ^ s ^ "_" ^ string_of_int i, T) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

972 
 aux t = t 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

973 
in t > exists_subterm is_Var t ? aux end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

974 

43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

975 
fun presimp_prop ctxt presimp_consts t = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

976 
let 
42361  977 
val thy = Proof_Context.theory_of ctxt 
38608
01ed56c46259
beta eta contract the Sledgehammer conjecture (and also the axioms, although this might not be needed), just like Metis does (implicitly);
blanchet
parents:
38606
diff
changeset

978 
val t = t > Envir.beta_eta_contract 
42944
9e620869a576
improved Waldmeister support  even run it by default on unit equational goals
blanchet
parents:
42943
diff
changeset

979 
> transform_elim_prop 
41211
1e2e16bc0077
no need to do a superduper atomization if Metis fails afterwards anyway
blanchet
parents:
41199
diff
changeset

980 
> Object_Logic.atomize_term thy 
42563  981 
val need_trueprop = (fastype_of t = @{typ bool}) 
43096  982 
in 
983 
t > need_trueprop ? HOLogic.mk_Trueprop 

984 
> Raw_Simplifier.rewrite_term thy (Meson.unfold_set_const_simps ctxt) [] 

985 
> extensionalize_term ctxt 

43264
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

986 
> presimplify_term ctxt presimp_consts 
43120
a9c2cdf4ae97
make sure "Trueprop" is removed before combinators are added  the code is fragile in that respect
blanchet
parents:
43105
diff
changeset

987 
> perhaps (try (HOLogic.dest_Trueprop)) 
43096  988 
end 
989 

990 
(* making fact and conjecture formulas *) 

43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43624
diff
changeset

991 
fun make_formula thy type_enc eq_as_iff name loc kind t = 
43096  992 
let 
43859  993 
val (iformula, atomic_types) = 
994 
iformula_from_prop thy type_enc eq_as_iff t [] 

38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

995 
in 
43859  996 
{name = name, locality = loc, kind = kind, iformula = iformula, 
42562  997 
atomic_types = atomic_types} 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

998 
end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

999 

43860
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1000 
fun make_fact ctxt format type_enc eq_as_iff ((name, loc), t) = 
43096  1001 
let val thy = Proof_Context.theory_of ctxt in 
43860
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1002 
case t > make_formula thy type_enc (eq_as_iff andalso format <> CNF) name 
43624
de026aecab9b
cleaner handling of higherorder simple types, so that it's also possible to use firstorder simple types with LEOII and company
blanchet
parents:
43623
diff
changeset

1003 
loc Axiom of 
43859  1004 
formula as {iformula = AAtom (IConst ((s, _), _, _)), ...} => 
43096  1005 
if s = tptp_true then NONE else SOME formula 
43295
30aaab778416
pass Metis facts and negated conjecture as facts, with (almost) correctly set localities, so that the correct encoding is used for nonmonotonic occurrences of infinite types
blanchet
parents:
43293
diff
changeset

1006 
 formula => SOME formula 
43096  1007 
end 
42561
23ddc4e3d19c
have properly typeinstantiated helper facts (combinators and If)
blanchet
parents:
42560
diff
changeset

1008 

43860
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1009 
fun make_conjecture ctxt format type_enc ps = 
43096  1010 
let 
1011 
val thy = Proof_Context.theory_of ctxt 

43860
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1012 
val last = length ps  1 
43096  1013 
in 
43863
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

1014 
map2 (fn j => fn ((name, loc), (kind, t)) => 
a43d61270142
ensure that the lambda translation procedure is called only once with all the facts, which is necessary for soundness of lambdalifting (freshness of new names)
blanchet
parents:
43862
diff
changeset

1015 
t > make_formula thy type_enc (format <> CNF) name loc kind 
43860
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1016 
> (j <> last) = (kind = Conjecture) ? update_iformula mk_anot) 
57ef3cd4126e
more refactoring of preprocessing, so as to be able to centralize it
blanchet
parents:
43859
diff
changeset

1017 
(0 upto last) ps 
38613
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

1018 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

1019 

42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1020 
(** Finite and infinite type inference **) 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1021 

42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1022 
fun deep_freeze_atyp (TVar (_, S)) = TFree ("v", S) 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1023 
 deep_freeze_atyp T = T 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1024 
val deep_freeze_type = map_atyps deep_freeze_atyp 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1025 

42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1026 
(* Finite types such as "unit", "bool", "bool * bool", and "bool => bool" are 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1027 
dangerous because their "exhaust" properties can easily lead to unsound ATP 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1028 
proofs. On the other hand, all HOL infinite types can be given the same 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1029 
models in firstorder logic (via LÃ¶wenheimSkolem). *) 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1030 

42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1031 
fun should_encode_type ctxt (nonmono_Ts as _ :: _) _ T = 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1032 
exists (curry (type_instance ctxt) (deep_freeze_type T)) nonmono_Ts 
42836  1033 
 should_encode_type _ _ All_Types _ = true 
43572
ae612a423dad
added "sound" option to force Sledgehammer to be pedantically sound
blanchet
parents:
43501
diff
changeset

1034 
 should_encode_type ctxt _ Fin_Nonmono_Types T = 
ae612a423dad
added "sound" option to force Sledgehammer to be pedantically sound
blanchet
parents:
43501
diff
changeset

1035 
is_type_surely_finite ctxt false T 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1036 
 should_encode_type _ _ _ _ = false 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1037 

42837  1038 
fun should_predicate_on_type ctxt nonmono_Ts (Preds (_, level, heaviness)) 
42834
40f7691d0539
implemented thin versions of "preds" type systems + fixed various issues with type args
blanchet
parents:
42832
diff
changeset

1039 
should_predicate_on_var T = 
43128  1040 
(heaviness = Heavyweight orelse should_predicate_on_var ()) andalso 
42878
85ac4c12a4b7
slightly fewer type predicates introduced in the lightweight encoding, based on the observation that only universal positive equalities are dangerous
blanchet
parents:
42855
diff
changeset

1041 
should_encode_type ctxt nonmono_Ts level T 
42834
40f7691d0539
implemented thin versions of "preds" type systems + fixed various issues with type args
blanchet
parents:
42832
diff
changeset

1042 
 should_predicate_on_type _ _ _ _ _ = false 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1043 

43859  1044 
fun is_var_or_bound_var (IConst ((s, _), _, _)) = 
42836  1045 
String.isPrefix bound_var_prefix s 
43859  1046 
 is_var_or_bound_var (IVar _) = true 
42836  1047 
 is_var_or_bound_var _ = false 
1048 

43361
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1049 
datatype tag_site = 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1050 
Top_Level of bool option  
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1051 
Eq_Arg of bool option  
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1052 
Elsewhere 
42829
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1053 

43361
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1054 
fun should_tag_with_type _ _ _ (Top_Level _) _ _ = false 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1055 
 should_tag_with_type ctxt nonmono_Ts (Tags (poly, level, heaviness)) site 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1056 
u T = 
42837  1057 
(case heaviness of 
43128  1058 
Heavyweight => should_encode_type ctxt nonmono_Ts level T 
1059 
 Lightweight => 

42836  1060 
case (site, is_var_or_bound_var u) of 
43361
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1061 
(Eq_Arg pos, true) => 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1062 
(* The first disjunct prevents a subtle soundness issue explained in 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1063 
Blanchette's Ph.D. thesis. See also 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1064 
"formula_lines_for_lightweight_tags_sym_decl". *) 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1065 
(pos <> SOME false andalso poly = Polymorphic andalso 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1066 
level <> All_Types andalso heaviness = Lightweight andalso 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1067 
exists (fn T' => type_instance ctxt (T', T)) nonmono_Ts) orelse 
e37b54d429f5
revived the lightweight "poly_tags_{query,bang}" type encodings by fixing their soundness bug
blanchet
parents:
43324
diff
changeset

1068 
should_encode_type ctxt nonmono_Ts level T 
42829
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1069 
 _ => false) 
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1070 
 should_tag_with_type _ _ _ _ _ _ = false 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1071 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1072 
fun homogenized_type ctxt nonmono_Ts level = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1073 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1074 
val should_encode = should_encode_type ctxt nonmono_Ts level 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1075 
fun homo 0 T = if should_encode T then T else homo_infinite_type 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1076 
 homo ary (Type (@{type_name fun}, [T1, T2])) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1077 
homo 0 T1 > homo (ary  1) T2 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1078 
 homo _ _ = raise Fail "expected function type" 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1079 
in homo end 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1080 

42573
744215c3e90c
got rid of one "sym_table" in "prepare_atp_problem" now that proxies are always handled first, and tuned accordingly
blanchet
parents:
42572
diff
changeset

1081 
(** "hBOOL" and "hAPP" **) 
41313
a96ac4d180b7
optionally supply constant weights to E  turned off by default until properly parameterized
blanchet
parents:
41211
diff
changeset

1082 

42574  1083 
type sym_info = 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1084 
{pred_sym : bool, min_ary : int, max_ary : int, types : typ list} 
42563  1085 

43859  1086 
fun add_iterm_syms_to_table ctxt explicit_apply = 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1087 
let 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1088 
fun consider_var_arity const_T var_T max_ary = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1089 
let 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1090 
fun iter ary T = 
43210
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1091 
if ary = max_ary orelse type_instance ctxt (var_T, T) orelse 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1092 
type_instance ctxt (T, var_T) then 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1093 
ary 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1094 
else 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1095 
iter (ary + 1) (range_type T) 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1096 
in iter 0 const_T end 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1097 
fun add_var_or_bound_var T (accum as ((bool_vars, fun_var_Ts), sym_tab)) = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1098 
if explicit_apply = NONE andalso 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1099 
(can dest_funT T orelse T = @{typ bool}) then 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1100 
let 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1101 
val bool_vars' = bool_vars orelse body_type T = @{typ bool} 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1102 
fun repair_min_arity {pred_sym, min_ary, max_ary, types} = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1103 
{pred_sym = pred_sym andalso not bool_vars', 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1104 
min_ary = fold (fn T' => consider_var_arity T' T) types min_ary, 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1105 
max_ary = max_ary, types = types} 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1106 
val fun_var_Ts' = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1107 
fun_var_Ts > can dest_funT T ? insert_type ctxt I T 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1108 
in 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1109 
if bool_vars' = bool_vars andalso 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1110 
pointer_eq (fun_var_Ts', fun_var_Ts) then 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1111 
accum 
43167
839f599bc7ed
ensured that the logic for "explicit_apply = smart" also works on CNF (i.e. new Metis)
blanchet
parents:
43159
diff
changeset

1112 
else 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1113 
((bool_vars', fun_var_Ts'), Symtab.map (K repair_min_arity) sym_tab) 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1114 
end 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1115 
else 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1116 
accum 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1117 
fun add top_level tm (accum as ((bool_vars, fun_var_Ts), sym_tab)) = 
43859  1118 
let val (head, args) = strip_iterm_comb tm in 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1119 
(case head of 
43859  1120 
IConst ((s, _), T, _) => 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1121 
if String.isPrefix bound_var_prefix s then 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1122 
add_var_or_bound_var T accum 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1123 
else 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1124 
let val ary = length args in 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1125 
((bool_vars, fun_var_Ts), 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1126 
case Symtab.lookup sym_tab s of 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1127 
SOME {pred_sym, min_ary, max_ary, types} => 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1128 
let 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1129 
val pred_sym = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1130 
pred_sym andalso top_level andalso not bool_vars 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1131 
val types' = types > insert_type ctxt I T 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1132 
val min_ary = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1133 
if is_some explicit_apply orelse 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1134 
pointer_eq (types', types) then 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1135 
min_ary 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1136 
else 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1137 
fold (consider_var_arity T) fun_var_Ts min_ary 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1138 
in 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1139 
Symtab.update (s, {pred_sym = pred_sym, 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1140 
min_ary = Int.min (ary, min_ary), 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1141 
max_ary = Int.max (ary, max_ary), 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1142 
types = types'}) 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1143 
sym_tab 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1144 
end 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1145 
 NONE => 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1146 
let 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1147 
val pred_sym = top_level andalso not bool_vars 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
