author  wenzelm 
Wed, 08 Jun 2011 17:49:01 +0200  
changeset 43283  446e6621762d 
parent 43278  1fbdcebb364b 
child 43297  e77baf329f48 
permissions  rwrr 
43283  1 
(* 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 Sledgehammer. 
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*) 
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signature ATP_TRANSLATE = 
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sig 
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type 'a fo_term = 'a ATP_Problem.fo_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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type name = string * string 
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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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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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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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type class_rel_clause = 
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{name: string, 

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subclass: name, 

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superclass: name} 

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datatype combterm = 
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CombConst of name * typ * typ list  
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CombVar of name * typ  
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CombApp of combterm * combterm 
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datatype locality = General  Intro  Elim  Simp  Local  Assum  Chained 
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datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
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datatype type_level = 
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All_Types  Nonmonotonic_Types  Finite_Types  Const_Arg_Types  No_Types 
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datatype type_heaviness = Heavyweight  Lightweight 
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datatype type_sys = 
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Simple_Types of 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 make_bound_var : string > string 
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val make_schematic_var : string * int > string 
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val make_fixed_var : string > string 
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val make_schematic_type_var : string * int > string 
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val make_fixed_type_var : string > string 
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val make_fixed_const : string > string 
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val make_fixed_type_const : string > string 
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val make_type_class : 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 make_arity_clauses : 
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theory > string list > class list > class list * arity_clause list 
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val make_class_rel_clauses : 
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theory > class list > class list > class_rel_clause list 
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val combtyp_of : combterm > typ 
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val strip_combterm_comb : combterm > combterm * combterm list 
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val atyps_of : typ > typ list 
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val combterm_from_term : 
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theory > (string * typ) list > term > combterm * typ list 
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val is_locality_global : locality > bool 
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val type_sys_from_string : string > type_sys 
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val polymorphism_of_type_sys : type_sys > polymorphism 

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val level_of_type_sys : type_sys > type_level 

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val is_type_sys_virtually_sound : type_sys > bool 

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val is_type_sys_fairly_sound : type_sys > bool 

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val choose_format : format list > type_sys > format * type_sys 

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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_name : string > string 
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val unmangled_const : string > string * string fo_term list 
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val helper_table : ((string * bool) * thm list) list 
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val should_specialize_helper : type_sys > term > bool 
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val tfree_classes_of_terms : term list > string list 
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val tvar_classes_of_terms : term list > string list 
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val type_constrs_of_terms : theory > term list > string list 
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val prepare_atp_problem : 
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Proof.context > format > formula_kind > formula_kind > type_sys 
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> bool > bool > term list > 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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(* experimental *) 
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val generate_useful_info = false 
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fun useful_isabelle_info s = 
151 
if generate_useful_info then 

152 
SOME (ATerm ("[]", [ATerm ("isabelle_" ^ s, [])])) 

153 
else 

154 
NONE 

155 

156 
val intro_info = useful_isabelle_info "intro" 

157 
val elim_info = useful_isabelle_info "elim" 

158 
val simp_info = useful_isabelle_info "simp" 

159 

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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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166 

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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 = "Sledgehammer" ^ 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 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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199 

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(* Freshness almost guaranteed! *) 
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val sledgehammer_weak_prefix = "Sledgehammer:" 
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202 

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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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213 

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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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224 

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val ascii_of = String.translate ascii_of_char 
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226 

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(** Remove ASCII armoring from names in proof files **) 
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228 

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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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241 
else 
43278  242 
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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249 

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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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256 
NONE 
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257 

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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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273 

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val proxify_const = AList.lookup (op =) proxy_table #> Option.map (snd o snd) 
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275 

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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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287 
(@{const_name HOL.eq}, "equal"), 
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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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(*Remove the initial ' character from a type variable, if it is present*) 
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fun trim_type_var s = 
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if s <> "" andalso String.sub(s,0) = #"'" then String.extract(s,1,NONE) 
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else raise Fail ("trim_type: Malformed type variable encountered: " ^ s) 
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fun ascii_of_indexname (v,0) = ascii_of v 
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 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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fun make_schematic_type_var (x,i) = 
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tvar_prefix ^ (ascii_of_indexname (trim_type_var x, i)) 
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fun make_fixed_type_var x = tfree_prefix ^ (ascii_of (trim_type_var x)) 
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(* HOL.eq MUST BE "equal" because it's built into ATPs. *) 
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fun make_fixed_const @{const_name HOL.eq} = "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  337 
fun new_skolem_var_name_from_const s = 
338 
let val ss = s > space_explode Long_Name.separator in 

339 
nth ss (length ss  2) 

340 
end 

341 

342 
(* The number of type arguments of a constant, zero if it's monomorphic. For 

343 
(instances of) Skolem pseudoconstants, this information is encoded in the 

344 
constant name. *) 

345 
fun num_type_args thy s = 

346 
if String.isPrefix skolem_const_prefix s then 

347 
s > space_explode Long_Name.separator > List.last > Int.fromString > the 

348 
else 

349 
(s, Sign.the_const_type thy s) > Sign.const_typargs thy > length 

350 

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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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357 

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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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365 

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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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374 

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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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382 

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383 
(** Isabelle arities **) 
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384 

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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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388 

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fun gen_TVars 0 = [] 
43093  390 
 gen_TVars n = ("T_" ^ string_of_int n) :: gen_TVars (n1) 
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391 

43263  392 
val type_class = the_single @{sort type} 
393 

394 
fun add_packed_sort tvar = 

395 
fold (fn s => s <> type_class ? cons (`make_type_class s, `I tvar)) 

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396 

43086  397 
type arity_clause = 
398 
{name: string, 

399 
prem_lits: arity_literal list, 

400 
concl_lits: arity_literal} 

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401 

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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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404 
let 
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405 
val tvars = gen_TVars (length args) 
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val tvars_srts = ListPair.zip (tvars, args) 
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in 
43086  408 
{name = name, 
43263  409 
prem_lits = [] > fold (uncurry add_packed_sort) tvars_srts > map TVarLit, 
43086  410 
concl_lits = TConsLit (`make_type_class cls, 
411 
`make_fixed_type_const tcons, 

412 
tvars ~~ tvars)} 

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413 
end 
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414 

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fun arity_clause _ _ (_, []) = [] 
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 arity_clause seen n (tcons, ("HOL.type",_)::ars) = (*ignore*) 
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417 
arity_clause seen n (tcons,ars) 
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 arity_clause seen n (tcons, (ar as (class,_)) :: ars) = 
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419 
if member (op =) seen class then (*multiple arities for the same tycon, class pair*) 
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make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class ^ "_" ^ string_of_int n, ar) :: 
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421 
arity_clause seen (n+1) (tcons,ars) 
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422 
else 
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423 
make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class, ar) :: 
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424 
arity_clause (class::seen) n (tcons,ars) 
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425 

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426 
fun multi_arity_clause [] = [] 
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 multi_arity_clause ((tcons, ars) :: tc_arlists) = 
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428 
arity_clause [] 1 (tcons, ars) @ multi_arity_clause tc_arlists 
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429 

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430 
(*Generate all pairs (tycon,class,sorts) such that tycon belongs to class in theory thy 
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431 
provided its arguments have the corresponding sorts.*) 
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432 
fun type_class_pairs thy tycons classes = 
43093  433 
let 
434 
val alg = Sign.classes_of thy 

435 
fun domain_sorts tycon = Sorts.mg_domain alg tycon o single 

436 
fun add_class tycon class = 

437 
cons (class, domain_sorts tycon class) 

438 
handle Sorts.CLASS_ERROR _ => I 

439 
fun try_classes tycon = (tycon, fold (add_class tycon) classes []) 

440 
in map try_classes tycons end 

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441 

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442 
(*Proving one (tycon, class) membership may require proving others, so iterate.*) 
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443 
fun iter_type_class_pairs _ _ [] = ([], []) 
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444 
 iter_type_class_pairs thy tycons classes = 
43263  445 
let 
446 
fun maybe_insert_class s = 

447 
(s <> type_class andalso not (member (op =) classes s)) 

448 
? insert (op =) s 

449 
val cpairs = type_class_pairs thy tycons classes 

450 
val newclasses = 

451 
[] > fold (fold (fold (fold maybe_insert_class) o snd) o snd) cpairs 

452 
val (classes', cpairs') = iter_type_class_pairs thy tycons newclasses 

43266  453 
in (classes' @ classes, union (op =) cpairs' cpairs) end 
43085
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454 

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455 
fun make_arity_clauses thy tycons = 
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456 
iter_type_class_pairs thy tycons ##> multi_arity_clause 
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457 

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458 

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459 
(** Isabelle class relations **) 
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460 

43086  461 
type class_rel_clause = 
462 
{name: string, 

463 
subclass: name, 

464 
superclass: name} 

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465 

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466 
(*Generate all pairs (sub,super) such that sub is a proper subclass of super in theory thy.*) 
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467 
fun class_pairs _ [] _ = [] 
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468 
 class_pairs thy subs supers = 
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469 
let 
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470 
val class_less = Sorts.class_less (Sign.classes_of thy) 
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471 
fun add_super sub super = class_less (sub, super) ? cons (sub, super) 
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472 
fun add_supers sub = fold (add_super sub) supers 
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473 
in fold add_supers subs [] end 
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474 

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475 
fun make_class_rel_clause (sub,super) = 
43086  476 
{name = sub ^ "_" ^ super, 
477 
subclass = `make_type_class sub, 

478 
superclass = `make_type_class super} 

43085
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479 

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480 
fun make_class_rel_clauses thy subs supers = 
43093  481 
map make_class_rel_clause (class_pairs thy subs supers) 
43085
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482 

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483 
datatype combterm = 
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484 
CombConst of name * typ * typ list  
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485 
CombVar of name * typ  
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486 
CombApp of combterm * combterm 
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487 

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488 
fun combtyp_of (CombConst (_, T, _)) = T 
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489 
 combtyp_of (CombVar (_, T)) = T 
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490 
 combtyp_of (CombApp (t1, _)) = snd (dest_funT (combtyp_of t1)) 
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491 

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492 
(*gets the head of a combinator application, along with the list of arguments*) 
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493 
fun strip_combterm_comb u = 
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494 
let fun stripc (CombApp(t,u), ts) = stripc (t, u::ts) 
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495 
 stripc x = x 
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496 
in stripc(u,[]) end 
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497 

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498 
fun atyps_of T = fold_atyps (insert (op =)) T [] 
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499 

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500 
fun new_skolem_const_name s num_T_args = 
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501 
[new_skolem_const_prefix, s, string_of_int num_T_args] 
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502 
> space_implode Long_Name.separator 
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503 

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504 
(* Converts a term (with combinators) into a combterm. Also accumulates sort 
0a2f5b86bdd7
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505 
infomation. *) 
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506 
fun combterm_from_term thy bs (P $ Q) = 
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507 
let 
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508 
val (P', P_atomics_Ts) = combterm_from_term thy bs P 
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509 
val (Q', Q_atomics_Ts) = combterm_from_term thy bs Q 
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510 
in (CombApp (P', Q'), union (op =) P_atomics_Ts Q_atomics_Ts) end 
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511 
 combterm_from_term thy _ (Const (c, T)) = 
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512 
let 
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513 
val tvar_list = 
0a2f5b86bdd7
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514 
(if String.isPrefix old_skolem_const_prefix c then 
0a2f5b86bdd7
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515 
[] > Term.add_tvarsT T > map TVar 
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516 
else 
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517 
(c, T) > Sign.const_typargs thy) 
0a2f5b86bdd7
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518 
val c' = CombConst (`make_fixed_const c, T, tvar_list) 
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519 
in (c', atyps_of T) end 
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520 
 combterm_from_term _ _ (Free (v, T)) = 
0a2f5b86bdd7
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521 
(CombConst (`make_fixed_var v, T, []), atyps_of T) 
0a2f5b86bdd7
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522 
 combterm_from_term _ _ (Var (v as (s, _), T)) = 
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523 
(if String.isPrefix Meson_Clausify.new_skolem_var_prefix s then 
0a2f5b86bdd7
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524 
let 
0a2f5b86bdd7
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525 
val Ts = T > strip_type > swap > op :: 
0a2f5b86bdd7
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526 
val s' = new_skolem_const_name s (length Ts) 
0a2f5b86bdd7
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527 
in CombConst (`make_fixed_const s', T, Ts) end 
0a2f5b86bdd7
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528 
else 
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529 
CombVar ((make_schematic_var v, s), T), atyps_of T) 
0a2f5b86bdd7
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530 
 combterm_from_term _ bs (Bound j) = 
0a2f5b86bdd7
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531 
nth bs j 
0a2f5b86bdd7
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532 
> (fn (s, T) => (CombConst (`make_bound_var s, T, []), atyps_of T)) 
0a2f5b86bdd7
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533 
 combterm_from_term _ _ (Abs _) = raise Fail "HOL clause: Abs" 
0a2f5b86bdd7
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534 

0a2f5b86bdd7
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535 
datatype locality = General  Intro  Elim  Simp  Local  Assum  Chained 
0a2f5b86bdd7
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536 

0a2f5b86bdd7
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537 
(* (quasi)underapproximation of the truth *) 
0a2f5b86bdd7
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538 
fun is_locality_global Local = false 
0a2f5b86bdd7
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539 
 is_locality_global Assum = false 
0a2f5b86bdd7
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540 
 is_locality_global Chained = false 
0a2f5b86bdd7
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541 
 is_locality_global _ = true 
0a2f5b86bdd7
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542 

42613
23b13b1bd565
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diff
changeset

543 
datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
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544 
datatype type_level = 
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545 
All_Types  Nonmonotonic_Types  Finite_Types  Const_Arg_Types  No_Types 
43128  546 
datatype type_heaviness = Heavyweight  Lightweight 
42613
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547 

43102  548 
datatype type_sys = 
42722  549 
Simple_Types of type_level  
42837  550 
Preds of polymorphism * type_level * type_heaviness  
551 
Tags of polymorphism * type_level * type_heaviness 

42613
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552 

42689
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
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changeset

553 
fun try_unsuffixes ss s = 
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
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changeset

554 
fold (fn s' => fn NONE => try (unsuffix s') s  some => some) ss NONE 
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
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changeset

555 

42613
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changeset

556 
fun type_sys_from_string s = 
42722  557 
(case try (unprefix "poly_") s of 
558 
SOME s => (SOME Polymorphic, s) 

42613
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559 
 NONE => 
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560 
case try (unprefix "mono_") s of 
42722  561 
SOME s => (SOME Monomorphic, s) 
562 
 NONE => 

563 
case try (unprefix "mangled_") s of 

564 
SOME s => (SOME Mangled_Monomorphic, s) 

565 
 NONE => (NONE, s)) 

42613
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566 
> (fn s => 
42689
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versions of ! and ? for the ASCIIchallenged Mirabelle
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567 
(* "_query" and "_bang" are for the ASCIIchallenged Mirabelle. *) 
e38590764c34
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changeset

568 
case try_unsuffixes ["?", "_query"] s of 
42613
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569 
SOME s => (Nonmonotonic_Types, s) 
23b13b1bd565
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570 
 NONE => 
42689
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versions of ! and ? for the ASCIIchallenged Mirabelle
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571 
case try_unsuffixes ["!", "_bang"] s of 
42613
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572 
SOME s => (Finite_Types, s) 
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573 
 NONE => (All_Types, s)) 
42828  574 
> apsnd (fn s => 
42837  575 
case try (unsuffix "_heavy") s of 
43128  576 
SOME s => (Heavyweight, s) 
577 
 NONE => (Lightweight, s)) 

42837  578 
> (fn (poly, (level, (heaviness, core))) => 
579 
case (core, (poly, level, heaviness)) of 

43128  580 
("simple", (NONE, _, Lightweight)) => Simple_Types 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

581 
 ("preds", (SOME poly, _, _)) => Preds (poly, level, heaviness) 
42851
3bb63850488b
removed "poly_tags_light_bang" since highly unsound
blanchet
parents:
42837
diff
changeset

582 
 ("tags", (SOME Polymorphic, All_Types, _)) => 
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

583 
Tags (Polymorphic, All_Types, 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

584 
 ("tags", (SOME Polymorphic, _, _)) => 
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:
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diff
changeset

585 
(* The actual light encoding is very unsound. *) 
43128  586 
Tags (Polymorphic, level, Heavyweight) 
42854
d99167ac4f8a
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blanchet
parents:
42852
diff
changeset

587 
 ("tags", (SOME poly, _, _)) => Tags (poly, level, heaviness) 
43128  588 
 ("args", (SOME poly, All_Types (* naja *), Lightweight)) => 
589 
Preds (poly, Const_Arg_Types, Lightweight) 

590 
 ("erased", (NONE, All_Types (* naja *), Lightweight)) => 

591 
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

592 
 _ => 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
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parents:
42750
diff
changeset

593 
handle Same.SAME => error ("Unknown type system: " ^ quote s ^ ".") 
42613
23b13b1bd565
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parents:
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diff
changeset

594 

42722  595 
fun polymorphism_of_type_sys (Simple_Types _) = Mangled_Monomorphic 
42828  596 
 polymorphism_of_type_sys (Preds (poly, _, _)) = poly 
597 
 polymorphism_of_type_sys (Tags (poly, _, _)) = poly 

42613
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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 

42722  599 
fun level_of_type_sys (Simple_Types level) = level 
42828  600 
 level_of_type_sys (Preds (_, level, _)) = level 
601 
 level_of_type_sys (Tags (_, level, _)) = level 

602 

43128  603 
fun heaviness_of_type_sys (Simple_Types _) = Heavyweight 
42837  604 
 heaviness_of_type_sys (Preds (_, _, heaviness)) = heaviness 
605 
 heaviness_of_type_sys (Tags (_, _, heaviness)) = heaviness 

42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

606 

42687  607 
fun is_type_level_virtually_sound level = 
608 
level = All_Types orelse level = Nonmonotonic_Types 

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

609 
val is_type_sys_virtually_sound = 
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

610 
is_type_level_virtually_sound o level_of_type_sys 
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

611 

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

612 
fun is_type_level_fairly_sound level = 
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

613 
is_type_level_virtually_sound level orelse level = Finite_Types 
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

614 
val is_type_sys_fairly_sound = is_type_level_fairly_sound o level_of_type_sys 
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

615 

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

616 
fun is_setting_higher_order THF (Simple_Types _) = true 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

617 
 is_setting_higher_order _ _ = false 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

618 

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

619 
fun choose_format formats (Simple_Types level) = 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

620 
if member (op =) formats THF then (THF, Simple_Types level) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

621 
else if member (op =) formats TFF then (TFF, Simple_Types level) 
43128  622 
else choose_format formats (Preds (Mangled_Monomorphic, level, Heavyweight)) 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

623 
 choose_format formats type_sys = 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

624 
(case hd formats of 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

625 
CNF_UEQ => 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

626 
(CNF_UEQ, case type_sys of 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

627 
Preds stuff => 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

628 
(if is_type_sys_fairly_sound type_sys then Preds else Tags) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

629 
stuff 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

630 
 _ => type_sys) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

631 
 format => (format, type_sys)) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

632 

40114  633 
type translated_formula = 
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38748
diff
changeset

634 
{name: string, 
42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

635 
locality: locality, 
42525
7a506b0b644f
distinguish FOF and TFF (typed firstorder) in ATP abstract syntax tree
blanchet
parents:
42524
diff
changeset

636 
kind: formula_kind, 
42562  637 
combformula: (name, typ, combterm) formula, 
638 
atomic_types: typ list} 

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

639 

42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

640 
fun update_combformula f ({name, locality, kind, combformula, atomic_types} 
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

641 
: translated_formula) = 
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

642 
{name = name, locality = locality, kind = kind, combformula = f combformula, 
42562  643 
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

644 

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

645 
fun fact_lift f ({combformula, ...} : translated_formula) = f combformula 
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

646 

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

647 
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

648 

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

649 
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

650 
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

651 
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

652 
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

653 
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

654 

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

655 
(* 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

656 
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

657 
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

658 
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

659 
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

660 

42836  661 
fun should_drop_arg_type_args (Simple_Types _) = 
662 
false (* since TFF doesn't support overloading *) 

663 
 should_drop_arg_type_args type_sys = 

664 
level_of_type_sys type_sys = All_Types andalso 

43128  665 
heaviness_of_type_sys type_sys = Heavyweight 
42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

666 

43128  667 
fun general_type_arg_policy (Tags (_, All_Types, Heavyweight)) = No_Type_Args 
43105
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

668 
 general_type_arg_policy type_sys = 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

669 
if level_of_type_sys type_sys = No_Types then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

670 
No_Type_Args 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

671 
else if polymorphism_of_type_sys type_sys = Mangled_Monomorphic then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

672 
Mangled_Type_Args (should_drop_arg_type_args type_sys) 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

673 
else 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

674 
Explicit_Type_Args (should_drop_arg_type_args type_sys) 
42563  675 

42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

676 
fun type_arg_policy type_sys s = 
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

677 
if s = @{const_name HOL.eq} orelse 
42966
4e2d6c1e5392
more work on parsing LEOII proofs without lambdas
blanchet
parents:
42963
diff
changeset

678 
(s = app_op_name andalso level_of_type_sys type_sys = Const_Arg_Types) then 
42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

679 
No_Type_Args 
43105
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

680 
else if s = type_tag_name then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

681 
Explicit_Type_Args false 
42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

682 
else 
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

683 
general_type_arg_policy type_sys 
42227
662b50b7126f
if "monomorphize" is enabled, mangle the type information in the names by default
blanchet
parents:
42180
diff
changeset

684 

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

685 
(*Make literals for sorted type variables*) 
43263  686 
fun generic_add_sorts_on_type (_, []) = I 
687 
 generic_add_sorts_on_type ((x, i), s :: ss) = 

688 
generic_add_sorts_on_type ((x, i), ss) 

689 
#> (if s = the_single @{sort HOL.type} then 

43093  690 
I 
691 
else if i = ~1 then 

43263  692 
insert (op =) (TyLitFree (`make_type_class s, `make_fixed_type_var x)) 
43093  693 
else 
43263  694 
insert (op =) (TyLitVar (`make_type_class s, 
695 
(make_schematic_type_var (x, i), x)))) 

696 
fun add_sorts_on_tfree (TFree (s, S)) = generic_add_sorts_on_type ((s, ~1), S) 

697 
 add_sorts_on_tfree _ = I 

698 
fun add_sorts_on_tvar (TVar z) = generic_add_sorts_on_type z 

699 
 add_sorts_on_tvar _ = I 

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

700 

43263  701 
fun type_literals_for_types type_sys add_sorts_on_typ Ts = 
702 
[] > level_of_type_sys type_sys <> 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

703 

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

704 
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

705 
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

706 
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

707 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

708 
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

709 
 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

710 
fun mk_aquant _ [] phi = phi 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

711 
 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

712 
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

713 
 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

714 

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

715 
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

716 
let 
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

717 
fun formula_vars bounds (AQuant (_, xs, phi)) = 
42526  718 
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

719 
 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

720 
 formula_vars bounds (AAtom tm) = 
42526  721 
union (op =) (atom_vars tm [] 
722 
> 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

723 
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

724 

42531
a462dbaa584f
added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents:
42530
diff
changeset

725 
fun combterm_vars (CombApp (tm1, tm2)) = fold combterm_vars [tm1, tm2] 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

726 
 combterm_vars (CombConst _) = I 
42574  727 
 combterm_vars (CombVar (name, T)) = insert (op =) (name, SOME T) 
42674  728 
fun close_combformula_universally phi = close_universally combterm_vars phi 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

729 

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

730 
fun term_vars (ATerm (name as (s, _), tms)) = 
42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

731 
is_tptp_variable s ? insert (op =) (name, NONE) #> fold term_vars tms 
42674  732 
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

733 

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

734 
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

735 
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

736 

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

737 
fun fo_term_from_typ format type_sys = 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

738 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

739 
fun term (Type (s, Ts)) = 
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

740 
ATerm (case (is_setting_higher_order format type_sys, s) of 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

741 
(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

742 
 (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

743 
 _ => 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

744 
(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

745 
`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

746 
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

747 
`make_fixed_type_const s, 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

748 
map term Ts) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

749 
 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

750 
 term (TVar ((x as (s, _)), _)) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

751 
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

752 
in term end 
42562  753 

754 
(* 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

755 
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

756 

42562  757 
fun generic_mangled_type_name f (ATerm (name, [])) = f name 
758 
 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

759 
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

760 
^ ")" 
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

761 

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

762 
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

763 

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

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

765 
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

766 
s = tptp_individual_type then 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

767 
s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

768 
else 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

769 
simple_type_prefix ^ ascii_of s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

770 

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

771 
fun ho_type_from_fo_term format type_sys pred_sym ary = 
42963  772 
let 
773 
fun to_atype ty = 

774 
AType ((make_simple_type (generic_mangled_type_name fst ty), 

775 
generic_mangled_type_name snd ty)) 

776 
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

777 
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

778 
 to_fo ary (ATerm (_, tys)) = to_afun to_atype (to_fo (ary  1)) tys 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

779 
fun to_ho (ty as ATerm ((s, _), tys)) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

780 
if s = tptp_fun_type then to_afun to_ho to_ho tys else to_atype ty 
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

781 
in if is_setting_higher_order format type_sys then to_ho else to_fo ary end 
42963  782 

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

783 
fun mangled_type format type_sys pred_sym ary = 
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

784 
ho_type_from_fo_term format type_sys pred_sym ary 
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

785 
o fo_term_from_typ format type_sys 
42963  786 

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

787 
fun mangled_const_name format type_sys T_args (s, s') = 
42963  788 
let 
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

789 
val ty_args = map (fo_term_from_typ format type_sys) T_args 
42963  790 
fun type_suffix f g = 
791 
fold_rev (curry (op ^) o g o prefix mangled_type_sep 

792 
o generic_mangled_type_name f) ty_args "" 

793 
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

794 

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 
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

796 
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

797 

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 
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

799 
(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

800 
 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

801 
[] >> 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

802 
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

803 
(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

804 

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 
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

806 
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

807 
> 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

808 
(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

809 
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

810 
> 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

811 

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

812 
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

813 
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

814 
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

815 
(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

816 
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

817 

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

818 
fun introduce_proxies format type_sys = 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

819 
let 
43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

820 
fun intro top_level (CombApp (tm1, tm2)) = 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

821 
CombApp (intro top_level tm1, intro false tm2) 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

822 
 intro top_level (CombConst (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

823 
(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

824 
SOME proxy_base => 
43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

825 
if top_level orelse is_setting_higher_order format type_sys then 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

826 
case (top_level, s) of 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

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

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

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

830 
 (false, "c_conj") => (`I tptp_and, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

831 
 (false, "c_disj") => (`I tptp_or, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

832 
 (false, "c_implies") => (`I tptp_implies, []) 
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)) 

840 
> (fn (name, T_args) => CombConst (name, T, T_args)) 

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

841 
 intro _ tm = tm 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

842 
in intro true end 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

843 

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

844 
fun combformula_from_prop thy format type_sys eq_as_iff = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

845 
let 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

846 
fun do_term bs t atomic_types = 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

847 
combterm_from_term thy bs (Envir.eta_contract t) 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

848 
>> (introduce_proxies format type_sys #> AAtom) 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

849 
> union (op =) atomic_types 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

850 
fun do_quant bs q s T t' = 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

851 
let val s = Name.variant (map fst bs) s in 
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

852 
do_formula ((s, T) :: bs) t' 
42562  853 
#>> mk_aquant q [(`make_bound_var s, SOME T)] 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

854 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

855 
and do_conn bs c t1 t2 = 
43198  856 
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

857 
and do_formula bs t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

858 
case t of 
43096  859 
@{const Trueprop} $ t1 => do_formula bs t1 
860 
 @{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

861 
 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

862 
do_quant bs AForall s T t' 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

863 
 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

864 
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

865 
 @{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

866 
 @{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

867 
 @{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

868 
 Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])) $ t1 $ t2 => 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

869 
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

870 
 _ => do_term bs t 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

871 
in do_formula [] end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

872 

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

873 
fun presimplify_term _ [] t = t 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

874 
 presimplify_term ctxt presimp_consts t = 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

875 
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

876 
? (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

877 
#> Meson.presimplify ctxt 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

878 
#> prop_of) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

879 

41491  880 
fun concealed_bound_name j = sledgehammer_weak_prefix ^ string_of_int j 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

881 
fun conceal_bounds Ts t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

882 
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

883 
(0 upto length Ts  1 ~~ Ts), t) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

884 
fun reveal_bounds Ts = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

885 
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

886 
(0 upto length Ts  1 ~~ Ts)) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

887 

43265  888 
fun is_fun_equality (@{const_name HOL.eq}, 
889 
Type (_, [Type (@{type_name fun}, _), _])) = true 

890 
 is_fun_equality _ = false 

891 

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

892 
fun extensionalize_term ctxt t = 
43265  893 
if exists_Const is_fun_equality t then 
894 
let val thy = Proof_Context.theory_of ctxt in 

895 
t > cterm_of thy > Meson.extensionalize_conv ctxt 

896 
> prop_of > Logic.dest_equals > snd 

897 
end 

898 
else 

899 
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

900 

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

901 
fun introduce_combinators_in_term ctxt kind t = 
42361  902 
let val thy = Proof_Context.theory_of ctxt in 
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

903 
if Meson.is_fol_term thy t then 
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

904 
t 
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

905 
else 
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

906 
let 
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

907 
fun aux Ts t = 
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

908 
case t of 
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

909 
@{const Not} $ t1 => @{const Not} $ aux Ts t1 
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

910 
 (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') => 
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

911 
t0 $ Abs (s, T, aux (T :: Ts) t') 
38652
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

912 
 (t0 as Const (@{const_name All}, _)) $ t1 => 
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

913 
aux Ts (t0 $ eta_expand Ts t1 1) 
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

914 
 (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') => 
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

915 
t0 $ Abs (s, T, aux (T :: Ts) t') 
38652
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

916 
 (t0 as Const (@{const_name Ex}, _)) $ t1 => 
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

917 
aux Ts (t0 $ eta_expand Ts t1 1) 
38795
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

918 
 (t0 as @{const HOL.conj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

919 
 (t0 as @{const HOL.disj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
38786
e46e7a9cb622
formerly unnamed infix impliciation now named HOL.implies
haftmann
parents:
38752
diff
changeset

920 
 (t0 as @{const HOL.implies}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
38864
4abe644fcea5
formerly unnamed infix equality now named HOL.eq
haftmann
parents:
38829
diff
changeset

921 
 (t0 as Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _]))) 
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

922 
$ t1 $ t2 => 
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

923 
t0 $ aux Ts t1 $ aux Ts t2 
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

924 
 _ => if not (exists_subterm (fn Abs _ => true  _ => false) t) then 
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

925 
t 
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

926 
else 
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

927 
t > conceal_bounds Ts 
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

928 
> Envir.eta_contract 
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

929 
> cterm_of thy 
39890  930 
> Meson_Clausify.introduce_combinators_in_cterm 
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

931 
> prop_of > Logic.dest_equals > snd 
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

932 
> reveal_bounds Ts 
39370
f8292d3020db
use same hack as in "Async_Manager" to work around Proof General bug
blanchet
parents:
39005
diff
changeset

933 
val (t, ctxt') = Variable.import_terms true [t] ctxt >> the_single 
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

934 
in t > aux [] > singleton (Variable.export_terms ctxt' ctxt) end 
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

935 
handle THM _ => 
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

936 
(* A type variable of sort "{}" will make abstraction fail. *) 
38613
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

937 
if kind = Conjecture then HOLogic.false_const 
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

938 
else HOLogic.true_const 
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

939 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

940 

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

941 
(* 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

942 
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

943 
fun freeze_term t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

944 
let 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

945 
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

946 
 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

947 
 aux (Var ((s, i), T)) = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

948 
Free (sledgehammer_weak_prefix ^ s ^ "_" ^ string_of_int i, T) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

949 
 aux t = t 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

950 
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

951 

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

952 
fun preprocess_prop ctxt presimp_consts kind t = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

953 
let 
42361  954 
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

955 
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

956 
> transform_elim_prop 
41211
1e2e16bc0077
no need to do a superduper atomization if Metis fails afterwards anyway
blanchet
parents:
41199
diff
changeset

957 
> Object_Logic.atomize_term thy 
42563  958 
val need_trueprop = (fastype_of t = @{typ bool}) 
43096  959 
in 
960 
t > need_trueprop ? HOLogic.mk_Trueprop 

961 
> Raw_Simplifier.rewrite_term thy (Meson.unfold_set_const_simps ctxt) [] 

962 
> extensionalize_term ctxt 

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

963 
> 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

964 
> perhaps (try (HOLogic.dest_Trueprop)) 
43096  965 
> introduce_combinators_in_term ctxt kind 
966 
end 

967 

968 
(* making fact and conjecture formulas *) 

969 
fun make_formula thy format type_sys eq_as_iff name loc kind t = 

970 
let 

42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42956
diff
changeset

971 
val (combformula, atomic_types) = 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

972 
combformula_from_prop thy format type_sys eq_as_iff t [] 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

973 
in 
42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

974 
{name = name, locality = loc, kind = kind, combformula = combformula, 
42562  975 
atomic_types = atomic_types} 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

976 
end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

977 

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

978 
fun make_fact ctxt format type_sys keep_trivial eq_as_iff preproc presimp_consts 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

979 
((name, loc), t) = 
43096  980 
let val thy = Proof_Context.theory_of ctxt in 
981 
case (keep_trivial, 

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

982 
t > preproc ? preprocess_prop ctxt presimp_consts Axiom 
43096  983 
> make_formula thy format type_sys eq_as_iff name loc Axiom) of 
984 
(false, 

985 
formula as {combformula = AAtom (CombConst ((s, _), _, _)), ...}) => 

986 
if s = tptp_true then NONE else SOME formula 

987 
 (_, formula) => SOME formula 

988 
end 

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

989 

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

990 
fun make_conjecture ctxt format prem_kind type_sys preproc presimp_consts ts = 
43096  991 
let 
992 
val thy = Proof_Context.theory_of ctxt 

993 
val last = length ts  1 

994 
in 

42709
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

995 
map2 (fn j => fn t => 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

996 
let 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

997 
val (kind, maybe_negate) = 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

998 
if j = last then 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

999 
(Conjecture, I) 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1000 
else 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1001 
(prem_kind, 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1002 
if prem_kind = Conjecture then update_combformula mk_anot 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1003 
else I) 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1004 
in 
43264
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

1005 
t > preproc ? 
a1a48c69d623
don't needlessly presimplify  makes ATP problem preparation much faster
blanchet
parents:
43263
diff
changeset

1006 
(preprocess_prop ctxt presimp_consts kind #> freeze_term) 
43193
e11bd628f1a5
improved ATP clausifier so it can deal with "x => (y <=> z)"
blanchet
parents:
43192
diff
changeset

1007 
> make_formula thy format type_sys (format <> CNF) 
e11bd628f1a5
improved ATP clausifier so it can deal with "x => (y <=> z)"
blanchet
parents:
43192
diff
changeset

1008 
(string_of_int j) General kind 
42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42956
diff
changeset

1009 
> maybe_negate 
42709
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

1010 
end) 
38613
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

1011 
(0 upto last) ts 
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

1012 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

1013 

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

1014 
(** 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

1015 

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

1016 
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

1017 
 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

1018 
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

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 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

1021 
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

1022 
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

1023 
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

1024 

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

1025 
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

1026 
exists (curry (type_instance ctxt) (deep_freeze_type T)) nonmono_Ts 
42836  1027 
 should_encode_type _ _ All_Types _ = true 
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

1028 
 should_encode_type ctxt _ Finite_Types T = is_type_surely_finite ctxt T 
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 
 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

1030 

42837  1031 
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

1032 
should_predicate_on_var T = 
43128  1033 
(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

1034 
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

1035 
 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

1036 

42836  1037 
fun is_var_or_bound_var (CombConst ((s, _), _, _)) = 
1038 
String.isPrefix bound_var_prefix s 

1039 
 is_var_or_bound_var (CombVar _) = true 

1040 
 is_var_or_bound_var _ = false 

1041 

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

1042 
datatype tag_site = Top_Level  Eq_Arg  Elsewhere 
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1043 

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

1044 
fun should_tag_with_type _ _ _ Top_Level _ _ = false 
42837  1045 
 should_tag_with_type ctxt nonmono_Ts (Tags (_, level, heaviness)) site u T = 
1046 
(case heaviness of 

43128  1047 
Heavyweight => should_encode_type ctxt nonmono_Ts level T 
1048 
 Lightweight => 

42836  1049 
case (site, is_var_or_bound_var u) of 
1050 
(Eq_Arg, true) => 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

1051 
 _ => false) 
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1052 
 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

1053 

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

1054 
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

1055 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1056 
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

1057 
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

1058 
 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

1059 
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

1060 
 homo _ _ = raise Fail "expected function type" 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1061 
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

1062 

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

1063 
(** "hBOOL" and "hAPP" **) 
41313
a96ac4d180b7
optionally supply constant weights to E  turned off by default until properly parameterized
blanchet
parents:
41211
diff
changeset

1064 

42574  1065 
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

1066 
{pred_sym : bool, min_ary : int, max_ary : int, types : typ list} 
42563  1067 

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

1068 
fun add_combterm_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

1069 
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

1070 
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

1071 
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

1072 
fun iter ary T = 
43210
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1073 
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

1074 
type_instance ctxt (T, var_T) then 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1075 
ary 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1076 
else 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1077 
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

1078 
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

1079 
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

1080 
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

1081 
(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

1082 
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

1083 
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

1084 
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

1085 
{pred_sym = pred_sym andalso not bool_vars', 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1086 
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

1087 
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

1088 
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

1089 
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

1090 
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

1091 
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

1092 
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

1093 
accum 
43167
839f599bc7ed
ensured that the logic for "explicit_apply = smart" also works on CNF (i.e. new Metis)
blanchet
parents:
43159
diff
changeset

1094 
else 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1095 
((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

1096 
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

1097 
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

1098 
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

1099 
fun add top_level tm (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

1100 
let val (head, args) = strip_combterm_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

1101 
(case head of 
42563  1102 
CombConst ((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

1103 
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

1104 
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

1105 
else 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1106 
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

1107 
((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

1108 
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

1109 
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

1110 
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

1111 
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

1112 
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

1113 
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

1114 
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

1115 
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

1116 
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

1117 
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

1118 
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

1119 
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

1120 
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

1121 
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

1122 
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

1123 
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

1124 
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

1125 
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

1126 
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

1127 
 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

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 = 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

1130 
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

1131 
case explicit_apply 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

1132 
SOME true => 0 
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 
 SOME false => 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

1134 
 NONE => fold (consider_var_arity T) fun_var_Ts 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

1135 
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

1136 
Symtab.update_new (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

1137 
min_ary = min_ary, max_ary = 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

1138 
types = [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

1139 
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

1140 
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

1141 
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

1142 
 CombVar (_, T) => add_var_or_bound_var T accum 
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

1143 
 _ => accum) 
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 
> fold (add false) args 
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

1145 
end 
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

1146 
in add true end 