author  bulwahn 
Tue, 29 May 2012 13:46:50 +0200  
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(* Title: HOL/Tools/Quickcheck/exhaustive_generators.ML 
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Author: Lukas Bulwahn, TU Muenchen 
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41918  4 
Exhaustive generators for various types. 
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*) 
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signature EXHAUSTIVE_GENERATORS = 
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sig 
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val compile_generator_expr: 
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Proof.context > (term * term list) list > bool > int list > (bool * term list) option * Quickcheck.report option 
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val compile_generator_exprs: Proof.context > term list > (int > term list option) list 
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val compile_validator_exprs: Proof.context > term list > (int > bool) list 
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val put_counterexample: (unit > int > bool > int > (bool * term list) option) 
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> Proof.context > Proof.context 
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val put_counterexample_batch: (unit > (int > term list option) list) 
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> Proof.context > Proof.context 
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val put_validator_batch: (unit > (int > bool) list) > Proof.context > Proof.context 
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exception Counterexample of term list 
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val smart_quantifier : bool Config.T 
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val optimise_equality : bool Config.T 
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val quickcheck_pretty : bool Config.T 
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val setup_exhaustive_datatype_interpretation : theory > theory 
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val setup: theory > theory 
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val instantiate_full_exhaustive_datatype : Datatype_Aux.config > Datatype_Aux.descr > 
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(string * sort) list > string list > string > string list * string list > typ list * typ list > theory > theory 
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val instantiate_exhaustive_datatype : Datatype_Aux.config > Datatype_Aux.descr > 
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(string * sort) list > string list > string > string list * string list > typ list * typ list > theory > theory 

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end; 
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structure Exhaustive_Generators : EXHAUSTIVE_GENERATORS = 
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struct 
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(* basics *) 
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(** dynamic options **) 
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val smart_quantifier = Attrib.setup_config_bool @{binding quickcheck_smart_quantifier} (K true) 
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val optimise_equality = Attrib.setup_config_bool @{binding quickcheck_optimise_equality} (K true) 
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val fast = Attrib.setup_config_bool @{binding quickcheck_fast} (K false) 
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val bounded_forall = Attrib.setup_config_bool @{binding quickcheck_bounded_forall} (K false) 
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val full_support = Attrib.setup_config_bool @{binding quickcheck_full_support} (K true) 
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val quickcheck_pretty = Attrib.setup_config_bool @{binding quickcheck_pretty} (K true) 
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(** general term functions **) 
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fun mk_measure f = 
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let 
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val Type ("fun", [T, @{typ nat}]) = fastype_of f 
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in 
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Const (@{const_name Wellfounded.measure}, 
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(T > @{typ nat}) > HOLogic.mk_prodT (T, T) > @{typ bool}) 
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$ f 
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end 
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fun mk_sumcases rT f (Type (@{type_name Sum_Type.sum}, [TL, TR])) = 
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let 
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val lt = mk_sumcases rT f TL 
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val rt = mk_sumcases rT f TR 
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in 
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SumTree.mk_sumcase TL TR rT lt rt 
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end 
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 mk_sumcases _ f T = f T 
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(** abstract syntax **) 
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fun termifyT T = HOLogic.mk_prodT (T, @{typ "unit => Code_Evaluation.term"}); 
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val size = @{term "i :: code_numeral"} 
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val size_pred = @{term "(i :: code_numeral)  1"} 
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val size_ge_zero = @{term "(i :: code_numeral) > 0"} 
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fun mk_none_continuation (x, y) = 
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let 
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val (T as Type(@{type_name "option"}, _)) = fastype_of x 
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in 
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Const (@{const_name "Quickcheck_Exhaustive.orelse"}, T > T > T) $ x $ y 
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end 
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fun mk_unit_let (x, y) = 
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Const (@{const_name "Let"}, @{typ "unit => (unit => unit) => unit"}) $ x $ absdummy @{typ unit} y 
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fun mk_if (b, t, e) = 
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let 
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val T = fastype_of t 
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in Const (@{const_name "HOL.If"}, @{typ bool} > T > T > T) $ b $ t $ e end 
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(* handling inductive datatypes *) 
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(** constructing generator instances **) 
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exception FUNCTION_TYPE; 
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exception Counterexample of term list 

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val resultT = @{typ "(bool * term list) option"}; 
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val exhaustiveN = "exhaustive"; 
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val full_exhaustiveN = "full_exhaustive"; 
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val fast_exhaustiveN = "fast_exhaustive"; 
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val bounded_forallN = "bounded_forall"; 
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fun fast_exhaustiveT T = (T > @{typ unit}) 

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> @{typ code_numeral} > @{typ unit} 

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fun exhaustiveT T = (T > resultT) > @{typ code_numeral} > resultT 
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fun bounded_forallT T = (T > @{typ bool}) > @{typ code_numeral} > @{typ bool} 
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fun full_exhaustiveT T = (termifyT T > resultT) > @{typ code_numeral} > resultT 
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fun check_allT T = (termifyT T > resultT) > resultT 
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fun mk_equation_terms generics (descr, vs, Ts) = 
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let 
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val (mk_call, mk_aux_call, mk_consexpr, mk_rhs, test_function, exhaustives) = generics 
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val rhss = 
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Datatype_Aux.interpret_construction descr vs 
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{ atyp = mk_call, dtyp = mk_aux_call } 
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> (map o apfst) Type 
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> map (fn (T, cs) => map (mk_consexpr T) cs) 
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> map mk_rhs 
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val lhss = map2 (fn t => fn T => t $ test_function T $ size) exhaustives Ts 
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in 
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map (HOLogic.mk_Trueprop o HOLogic.mk_eq) (lhss ~~ rhss) 
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end 
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fun gen_mk_call c T = (T, fn t => c T $ absdummy T t $ size_pred) 
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fun gen_mk_aux_call functerms fTs (k, _) (tyco, Ts) = 
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let 
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val T = Type (tyco, Ts) 
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val _ = if not (null fTs) then raise FUNCTION_TYPE else () 
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in 
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(T, fn t => nth functerms k $ absdummy T t $ size_pred) 
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end 
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fun gen_mk_consexpr test_function simpleT (c, xs) = 
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let 
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val (Ts, fns) = split_list xs 
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val constr = Const (c, Ts > simpleT) 
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val bounds = map Bound (((length xs)  1) downto 0) 
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val start_term = test_function simpleT $ list_comb (constr, bounds) 
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in fold_rev (fn f => fn t => f t) fns start_term end 
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fun mk_fast_equations functerms = 
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let 
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fun test_function T = Free ("f", T > @{typ "unit"}) 
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val mk_call = gen_mk_call (fn T => 
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Const (@{const_name "Quickcheck_Exhaustive.fast_exhaustive_class.fast_exhaustive"}, 
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fast_exhaustiveT T)) 
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val mk_aux_call = gen_mk_aux_call functerms 
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val mk_consexpr = gen_mk_consexpr test_function 
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fun mk_rhs exprs = @{term "If :: bool => unit => unit => unit"} 
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$ size_ge_zero $ (foldr1 mk_unit_let exprs) $ @{term "()"} 
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in 
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mk_equation_terms (mk_call, mk_aux_call, mk_consexpr, mk_rhs, test_function, functerms) 
42306  160 
end 
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fun mk_equations functerms = 
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let 
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fun test_function T = Free ("f", T > resultT) 
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val mk_call = gen_mk_call (fn T => 
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Const (@{const_name "Quickcheck_Exhaustive.exhaustive_class.exhaustive"}, exhaustiveT T)) 
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val mk_aux_call = gen_mk_aux_call functerms 
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val mk_consexpr = gen_mk_consexpr test_function 
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fun mk_rhs exprs = 
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mk_if (size_ge_zero, foldr1 mk_none_continuation exprs, Const (@{const_name "None"}, resultT)) 
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in 
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mk_equation_terms (mk_call, mk_aux_call, mk_consexpr, mk_rhs, test_function, functerms) 
42304  173 
end 
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fun mk_bounded_forall_equations functerms = 
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let 
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fun test_function T = Free ("P", T > @{typ bool}) 
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val mk_call = gen_mk_call (fn T => 
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Const (@{const_name "Quickcheck_Exhaustive.bounded_forall_class.bounded_forall"}, 
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bounded_forallT T)) 
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val mk_aux_call = gen_mk_aux_call functerms 
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val mk_consexpr = gen_mk_consexpr test_function 
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fun mk_rhs exprs = 
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mk_if (size_ge_zero, foldr1 HOLogic.mk_conj exprs, @{term "True"}) 
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in 
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mk_equation_terms (mk_call, mk_aux_call, mk_consexpr, mk_rhs, test_function, functerms) 
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end 
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fun mk_full_equations functerms = 
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let 
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fun test_function T = Free ("f", termifyT T > resultT) 
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fun split_const T = HOLogic.split_const (T, @{typ "unit => Code_Evaluation.term"}, resultT) 

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fun mk_call T = 
194 
let 

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val full_exhaustive = 
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Const (@{const_name "Quickcheck_Exhaustive.full_exhaustive_class.full_exhaustive"}, 
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full_exhaustiveT T) 
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in 
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(T, fn t => full_exhaustive $ 
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(split_const T $ absdummy T (absdummy @{typ "unit => Code_Evaluation.term"} t)) $ size_pred) 
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end 
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fun mk_aux_call fTs (k, _) (tyco, Ts) = 
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let 
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val T = Type (tyco, Ts) 
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val _ = if not (null fTs) then raise FUNCTION_TYPE else () 
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in 
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(T, fn t => nth functerms k $ 
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(split_const T $ absdummy T (absdummy @{typ "unit => Code_Evaluation.term"} t)) $ size_pred) 
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end 
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fun mk_consexpr simpleT (c, xs) = 
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let 
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val (Ts, fns) = split_list xs 
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val constr = Const (c, Ts > simpleT) 
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val bounds = map (fn x => Bound (2 * x + 1)) (((length xs)  1) downto 0) 
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val Eval_App = Const ("Code_Evaluation.App", HOLogic.termT > HOLogic.termT > HOLogic.termT) 
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val Eval_Const = Const ("Code_Evaluation.Const", HOLogic.literalT > @{typ typerep} > HOLogic.termT) 
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val term = fold (fn u => fn t => Eval_App $ t $ (u $ @{term "()"})) 
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bounds (Eval_Const $ HOLogic.mk_literal c $ HOLogic.mk_typerep (Ts > simpleT)) 
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val start_term = test_function simpleT $ 
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(HOLogic.pair_const simpleT @{typ "unit => Code_Evaluation.term"} 
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$ (list_comb (constr, bounds)) $ absdummy @{typ unit} term) 
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in fold_rev (fn f => fn t => f t) fns start_term end 
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fun mk_rhs exprs = 
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mk_if (size_ge_zero, foldr1 mk_none_continuation exprs, 
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Const (@{const_name "None"}, resultT)) 
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in 
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mk_equation_terms (mk_call, mk_aux_call, mk_consexpr, mk_rhs, test_function, functerms) 
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end 
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(** foundational definition with the function package **) 
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val less_int_pred = @{lemma "i > 0 ==> Code_Numeral.nat_of ((i :: code_numeral)  1) < Code_Numeral.nat_of i" by auto} 
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fun mk_single_measure T = HOLogic.mk_comp (@{term "Code_Numeral.nat_of"}, 
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Const (@{const_name "Product_Type.snd"}, T > @{typ "code_numeral"})) 
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fun mk_termination_measure T = 
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let 
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val T' = fst (HOLogic.dest_prodT (HOLogic.dest_setT T)) 
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in 
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mk_measure (mk_sumcases @{typ nat} mk_single_measure T') 
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end 
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fun termination_tac ctxt = 
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Function_Relation.relation_tac ctxt mk_termination_measure 1 
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THEN rtac @{thm wf_measure} 1 
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THEN (REPEAT_DETERM (Simplifier.asm_full_simp_tac 
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(HOL_basic_ss addsimps [@{thm in_measure}, @{thm o_def}, @{thm snd_conv}, 
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@{thm nat_mono_iff}, less_int_pred] @ @{thms sum.cases}) 1)) 
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250 

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(** instantiating generator classes **) 
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42325  253 
fun contains_recursive_type_under_function_types xs = 
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exists (fn (_, (_, _, cs)) => cs > exists (snd #> exists (fn dT => 
42325  255 
(case Datatype_Aux.strip_dtyp dT of (_ :: _, Datatype.DtRec _) => true  _ => false)))) xs 
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fun instantiate_datatype (name, constprfx, sort, mk_equations, mk_T, argnames) 
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config descr vs tycos prfx (names, auxnames) (Ts, Us) thy = 
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if not (contains_recursive_type_under_function_types descr) then 
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let 
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val _ = Datatype_Aux.message config ("Creating " ^ name ^ "...") 
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val fullnames = map (prefix (constprfx ^ "_")) (names @ auxnames) 
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in 
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thy 
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> Class.instantiation (tycos, vs, sort) 
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> Quickcheck_Common.define_functions 
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(fn functerms => mk_equations functerms (descr, vs, Ts @ Us), NONE) 
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prfx argnames fullnames (map mk_T (Ts @ Us)) 
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> Class.prove_instantiation_exit (K (Class.intro_classes_tac [])) 
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end 
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else 
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(Datatype_Aux.message config 
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("Creation of " ^ name ^ " failed because the datatype is recursive under a function type"); 
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thy) 
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275 

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val instantiate_bounded_forall_datatype = instantiate_datatype 
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("bounded universal quantifiers", bounded_forallN, @{sort bounded_forall}, 
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mk_bounded_forall_equations, bounded_forallT, ["P", "i"]); 
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val instantiate_fast_exhaustive_datatype = instantiate_datatype 
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("fast exhaustive generators", fast_exhaustiveN, @{sort fast_exhaustive}, 
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mk_fast_equations, fast_exhaustiveT, ["f", "i"]) 
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283 

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val instantiate_exhaustive_datatype = instantiate_datatype 
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("exhaustive generators", exhaustiveN, @{sort exhaustive}, 
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mk_equations, exhaustiveT, ["f", "i"]) 
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287 

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val instantiate_full_exhaustive_datatype = instantiate_datatype 
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("full exhaustive generators", full_exhaustiveN, @{sort full_exhaustive}, 
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mk_full_equations, full_exhaustiveT, ["f", "i"]) 
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291 

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(* building and compiling generator expressions *) 
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293 

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fun mk_let_expr (x, t, e) genuine = 
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let 
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val (T1, T2) = (fastype_of x, fastype_of (e genuine)) 
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in 
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Const (@{const_name Let}, T1 > (T1 > T2) > T2) $ t $ lambda x (e genuine) 
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299 
end 
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300 

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fun mk_test_term lookup mk_closure mk_if mk_let none_t return ctxt = 
42306  302 
let 
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val cnstrs = flat (maps 
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(map (fn (_, (Tname, _, cs)) => map (apsnd (rpair Tname o length)) cs) o #descr o snd) 
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(Symtab.dest (Datatype.get_all (Proof_Context.theory_of ctxt)))) 
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fun is_constrt (Const (s, T), ts) = (case (AList.lookup (op =) cnstrs s, body_type T) of 
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(SOME (i, Tname), Type (Tname', _)) => length ts = i andalso Tname = Tname' 
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 _ => false) 
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 is_constrt _ = false 
42306  310 
fun mk_naive_test_term t = 
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fold_rev mk_closure (map lookup (Term.add_free_names t [])) 
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(mk_if (t, none_t, return) true) 
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fun mk_smart_test_term' concl bound_vars assms genuine = 
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let 
315 
fun vars_of t = subtract (op =) bound_vars (Term.add_free_names t []) 

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fun mk_equality_term (lhs, f as Free (x, _)) c (assm, assms) = 
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if member (op =) (Term.add_free_names lhs bound_vars) x then 
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c (assm, assms) 
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else 
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(remove (op =) x (vars_of assm), 
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321 
mk_let f (try lookup x) lhs 
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(mk_smart_test_term' concl (union (op =) (vars_of assm) bound_vars) assms) genuine) 
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 mk_equality_term (lhs, t) c (assm, assms) = 
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if is_constrt (strip_comb t) then 
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325 
let 
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326 
val (constr, args) = strip_comb t 
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val T = fastype_of t 
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val vars = map Free (Variable.variant_frees ctxt (concl :: assms) 
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329 
(map (fn t => ("x", fastype_of t)) args)) 
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val varnames = map (fst o dest_Free) vars 
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val dummy_var = Free (singleton 
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(Variable.variant_frees ctxt (concl :: assms @ vars)) ("dummy", T)) 
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val new_assms = map HOLogic.mk_eq (vars ~~ args) 
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val cont_t = mk_smart_test_term' concl (union (op =) varnames bound_vars) 
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335 
(new_assms @ assms) genuine 
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336 
in 
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337 
(vars_of lhs, Datatype_Case.make_case ctxt Datatype_Case.Quiet [] lhs 
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338 
[(list_comb (constr, vars), cont_t), (dummy_var, none_t)]) 
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339 
end 
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else c (assm, assms) 
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fun default (assm, assms) = (vars_of assm, 
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mk_if (HOLogic.mk_not assm, none_t, 
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mk_smart_test_term' concl (union (op =) (vars_of assm) bound_vars) assms) genuine) 
42306  344 
val (vars, check) = 
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case assms of [] => (vars_of concl, mk_if (concl, none_t, return) genuine) 
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 assm :: assms => 
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347 
if Config.get ctxt optimise_equality then 
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(case try HOLogic.dest_eq assm of 
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349 
SOME (lhs, rhs) => 
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350 
mk_equality_term (lhs, rhs) (mk_equality_term (rhs, lhs) default) (assm, assms) 
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351 
 NONE => default (assm, assms)) 
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else default (assm, assms) 
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in 
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fold_rev mk_closure (map lookup vars) check 
42306  355 
end 
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val mk_smart_test_term = 
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Quickcheck_Common.strip_imp #> (fn (assms, concl) => mk_smart_test_term' concl [] assms true) 
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358 
in 
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359 
if Config.get ctxt smart_quantifier then mk_smart_test_term else mk_naive_test_term 
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360 
end 
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361 

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362 
fun mk_fast_generator_expr ctxt (t, eval_terms) = 
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363 
let 
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364 
val ctxt' = Variable.auto_fixes t ctxt 
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365 
val names = Term.add_free_names t [] 
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366 
val frees = map Free (Term.add_frees t []) 
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367 
fun lookup v = the (AList.lookup (op =) (names ~~ frees) v) 
46306  368 
val ([depth_name], _) = Variable.variant_fixes ["depth"] ctxt' 
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val depth = Free (depth_name, @{typ code_numeral}) 
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fun return _ = @{term "throw_Counterexample :: term list => unit"} $ 
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(HOLogic.mk_list @{typ "term"} 
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372 
(map (fn t => HOLogic.mk_term_of (fastype_of t) t) (frees @ eval_terms))) 
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373 
fun mk_exhaustive_closure (free as Free (_, T)) t = 
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Const (@{const_name "Quickcheck_Exhaustive.fast_exhaustive_class.fast_exhaustive"}, 
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375 
fast_exhaustiveT T) 
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376 
$ lambda free t $ depth 
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377 
val none_t = @{term "()"} 
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fun mk_safe_if (cond, then_t, else_t) genuine = mk_if (cond, then_t, else_t genuine) 
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fun mk_let def v_opt t e = mk_let_expr (the_default def v_opt, t, e) 
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380 
val mk_test_term = mk_test_term lookup mk_exhaustive_closure mk_safe_if mk_let none_t return ctxt 
42306  381 
in lambda depth (@{term "catch_Counterexample :: unit => term list option"} $ mk_test_term t) end 
382 

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fun mk_unknown_term T = HOLogic.reflect_term (Const ("Quickcheck_Exhaustive.unknown", T)) 
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384 

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fun mk_safe_term t = @{term "Quickcheck.catch_match :: term => term => term"} 
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386 
$ (HOLogic.mk_term_of (fastype_of t) t) $ mk_unknown_term (fastype_of t) 
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387 

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388 
fun mk_return t genuine = @{term "Some :: bool * term list => (bool * term list) option"} $ 
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389 
(HOLogic.pair_const @{typ bool} @{typ "term list"} $ Quickcheck_Common.reflect_bool genuine $ t) 
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390 

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391 
fun mk_generator_expr ctxt (t, eval_terms) = 
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392 
let 
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393 
val ctxt' = Variable.auto_fixes t ctxt 
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394 
val names = Term.add_free_names t [] 
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395 
val frees = map Free (Term.add_frees t []) 
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396 
fun lookup v = the (AList.lookup (op =) (names ~~ frees) v) 
46306  397 
val ([depth_name, genuine_only_name], _) = 
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398 
Variable.variant_fixes ["depth", "genuine_only"] ctxt' 
42304  399 
val depth = Free (depth_name, @{typ code_numeral}) 
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val genuine_only = Free (genuine_only_name, @{typ bool}) 
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val return = mk_return (HOLogic.mk_list @{typ "term"} 
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402 
(map (fn t => HOLogic.mk_term_of (fastype_of t) t) frees @ map mk_safe_term eval_terms)) 
42304  403 
fun mk_exhaustive_closure (free as Free (_, T)) t = 
404 
Const (@{const_name "Quickcheck_Exhaustive.exhaustive_class.exhaustive"}, exhaustiveT T) 

405 
$ lambda free t $ depth 

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406 
val none_t = Const (@{const_name "None"}, resultT) 
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407 
val mk_if = Quickcheck_Common.mk_safe_if genuine_only none_t 
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408 
fun mk_let def v_opt t e = mk_let_expr (the_default def v_opt, t, e) 
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409 
val mk_test_term = mk_test_term lookup mk_exhaustive_closure mk_if mk_let none_t return ctxt 
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410 
in lambda genuine_only (lambda depth (mk_test_term t)) end 
42304  411 

412 
fun mk_full_generator_expr ctxt (t, eval_terms) = 

413 
let 

42361  414 
val thy = Proof_Context.theory_of ctxt 
42304  415 
val ctxt' = Variable.auto_fixes t ctxt 
416 
val names = Term.add_free_names t [] 

417 
val frees = map Free (Term.add_frees t []) 

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418 
val ([depth_name, genuine_only_name], ctxt'') = 
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419 
Variable.variant_fixes ["depth", "genuine_only"] ctxt' 
46306  420 
val (term_names, _) = Variable.variant_fixes (map (prefix "t_") names) ctxt'' 
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421 
val depth = Free (depth_name, @{typ code_numeral}) 
46306  422 
val genuine_only = Free (genuine_only_name, @{typ bool}) 
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423 
val term_vars = map (fn n => Free (n, @{typ "unit => term"})) term_names 
42390
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424 
fun lookup v = the (AList.lookup (op =) (names ~~ (frees ~~ term_vars)) v) 
45724
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425 
val return = mk_return (HOLogic.mk_list @{typ term} 
1f5fc44254d7
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426 
(map (fn v => v $ @{term "()"}) term_vars @ map mk_safe_term eval_terms)) 
42028
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427 
fun mk_exhaustive_closure (free as Free (_, T), term_var) t = 
46331
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changeset

428 
if Sign.of_sort thy (T, @{sort check_all}) then 
42028
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passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
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429 
Const (@{const_name "Quickcheck_Exhaustive.check_all_class.check_all"}, check_allT T) 
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430 
$ (HOLogic.split_const (T, @{typ "unit => term"}, resultT) 
42028
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431 
$ lambda free (lambda term_var t)) 
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432 
else 
42314
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433 
Const (@{const_name "Quickcheck_Exhaustive.full_exhaustive_class.full_exhaustive"}, full_exhaustiveT T) 
45722  434 
$ (HOLogic.split_const (T, @{typ "unit => term"}, resultT) 
42028
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435 
$ lambda free (lambda term_var t)) $ depth 
45722  436 
val none_t = Const (@{const_name "None"}, resultT) 
45763
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437 
val mk_if = Quickcheck_Common.mk_safe_if genuine_only none_t 
48013
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438 
fun mk_let _ (SOME (v, term_var)) t e = 
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439 
mk_let_expr (v, t, 
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440 
e #> subst_free [(term_var, absdummy @{typ unit} (HOLogic.mk_term_of (fastype_of t) t))]) 
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441 
 mk_let v NONE t e = mk_let_expr (v, t, e) 
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442 
val mk_test_term = mk_test_term lookup mk_exhaustive_closure mk_if mk_let none_t return ctxt 
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443 
in lambda genuine_only (lambda depth (mk_test_term t)) end 
42028
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444 

42304  445 
fun mk_parametric_generator_expr mk_generator_expr = 
42159
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generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
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446 
Quickcheck_Common.gen_mk_parametric_generator_expr 
45754
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447 
((mk_generator_expr, 
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448 
absdummy @{typ bool} (absdummy @{typ "code_numeral"} (Const (@{const_name "None"}, resultT)))), 
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449 
@{typ bool} > @{typ "code_numeral"} > resultT) 
42195
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450 

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451 
fun mk_validator_expr ctxt t = 
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452 
let 
1e7b62c93f5d
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453 
fun bounded_forallT T = (T > @{typ bool}) > @{typ code_numeral} > @{typ bool} 
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changeset

454 
val ctxt' = Variable.auto_fixes t ctxt 
42390
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creating generic test_term function; corrected instantiate_exhaustive_datatype; tuned
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455 
val names = Term.add_free_names t [] 
be7af468f7b3
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changeset

456 
val frees = map Free (Term.add_frees t []) 
be7af468f7b3
creating generic test_term function; corrected instantiate_exhaustive_datatype; tuned
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diff
changeset

457 
fun lookup v = the (AList.lookup (op =) (names ~~ frees) v) 
46306  458 
val ([depth_name], _) = Variable.variant_fixes ["depth"] ctxt' 
42195
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changeset

459 
val depth = Free (depth_name, @{typ code_numeral}) 
42390
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diff
changeset

460 
fun mk_bounded_forall (Free (s, T)) t = 
42195
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461 
Const (@{const_name "Quickcheck_Exhaustive.bounded_forall_class.bounded_forall"}, bounded_forallT T) 
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462 
$ lambda (Free (s, T)) t $ depth 
45761
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exhaustive returns if a counterexample is genuine or potentially spurious in the presence of assumptions more correctly
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diff
changeset

463 
fun mk_safe_if (cond, then_t, else_t) genuine = mk_if (cond, then_t, else_t genuine) 
48013
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parents:
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diff
changeset

464 
fun mk_let def v_opt t e = mk_let_expr (the_default def v_opt, t, e) 
45721
d1fb55c2ed65
quickcheck's compilation returns if it is genuine counterexample or a counterexample due to a match exception
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diff
changeset

465 
val mk_test_term = 
48013
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added optimisation for equational premises in Quickcheck; added some Quickcheck examples; NEWS
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diff
changeset

466 
mk_test_term lookup mk_bounded_forall mk_safe_if mk_let @{term True} (K @{term False}) ctxt 
42195
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changeset

467 
in lambda depth (mk_test_term t) end 
1e7b62c93f5d
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468 

42391  469 

470 
fun mk_bounded_forall_generator_expr ctxt (t, eval_terms) = 

471 
let 

472 
val frees = Term.add_free_names t [] 

473 
val dummy_term = @{term "Code_Evaluation.Const (STR ''dummy_pattern'') 

474 
(Typerep.Typerep (STR ''dummy'') [])"} 

475 
val return = @{term "Some :: term list => term list option"} $ 

476 
(HOLogic.mk_list @{typ "term"} 

477 
(replicate (length frees + length eval_terms) dummy_term)) 

44241  478 
val wrap = absdummy @{typ bool} 
479 
(@{term "If :: bool => term list option => term list option => term list option"} $ 

480 
Bound 0 $ @{term "None :: term list option"} $ return) 

42391  481 
in HOLogic.mk_comp (wrap, mk_validator_expr ctxt t) end 
482 

42028
bd6515e113b2
passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
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changeset

483 
(** generator compiliation **) 
bd6515e113b2
passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
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42027
diff
changeset

484 

46042  485 
(* FIXME just one data slot (record) per program unit *) 
486 

41472
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wenzelm
parents:
41178
diff
changeset

487 
structure Counterexample = Proof_Data 
f6ab14e61604
misc tuning and comments based on review of Theory_Data, Proof_Data, Generic_Data usage;
wenzelm
parents:
41178
diff
changeset

488 
( 
45754
394ecd91434a
dynamic genuine_flag in compilation of random and exhaustive
bulwahn
parents:
45753
diff
changeset

489 
type T = unit > int > bool > int > (bool * term list) option 
41472
f6ab14e61604
misc tuning and comments based on review of Theory_Data, Proof_Data, Generic_Data usage;
wenzelm
parents:
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changeset

490 
(* FIXME avoid user error with nonuser text *) 
40420
552563ea3304
adding code and theory for smallvalue generators, but do not setup the interpretation yet
bulwahn
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diff
changeset

491 
fun init _ () = error "Counterexample" 
552563ea3304
adding code and theory for smallvalue generators, but do not setup the interpretation yet
bulwahn
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diff
changeset

492 
); 
552563ea3304
adding code and theory for smallvalue generators, but do not setup the interpretation yet
bulwahn
parents:
diff
changeset

493 
val put_counterexample = Counterexample.put; 
552563ea3304
adding code and theory for smallvalue generators, but do not setup the interpretation yet
bulwahn
parents:
diff
changeset

494 

41861
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adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
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diff
changeset

495 
structure Counterexample_Batch = Proof_Data 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
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41472
diff
changeset

496 
( 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
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diff
changeset

497 
type T = unit > (int > term list option) list 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
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changeset

498 
(* FIXME avoid user error with nonuser text *) 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
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diff
changeset

499 
fun init _ () = error "Counterexample" 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
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41472
diff
changeset

500 
); 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
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diff
changeset

501 
val put_counterexample_batch = Counterexample_Batch.put; 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

502 

42195
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

503 
structure Validator_Batch = Proof_Data 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

504 
( 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

505 
type T = unit > (int > bool) list 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
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diff
changeset

506 
(* FIXME avoid user error with nonuser text *) 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

507 
fun init _ () = error "Counterexample" 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

508 
); 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

509 
val put_validator_batch = Validator_Batch.put; 
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

510 

1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

511 

40420
552563ea3304
adding code and theory for smallvalue generators, but do not setup the interpretation yet
bulwahn
parents:
diff
changeset

512 
val target = "Quickcheck"; 
42391  513 

42159
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

514 
fun compile_generator_expr ctxt ts = 
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

515 
let 
42361  516 
val thy = Proof_Context.theory_of ctxt 
42306  517 
val mk_generator_expr = 
518 
if Config.get ctxt fast then mk_fast_generator_expr 

42391  519 
else if Config.get ctxt bounded_forall then mk_bounded_forall_generator_expr 
42306  520 
else if Config.get ctxt full_support then mk_full_generator_expr else mk_generator_expr 
42304  521 
val t' = mk_parametric_generator_expr mk_generator_expr ctxt ts; 
42159
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
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diff
changeset

522 
val compile = Code_Runtime.dynamic_value_strict 
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

523 
(Counterexample.get, put_counterexample, "Exhaustive_Generators.put_counterexample") 
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

524 
thy (SOME target) (fn proc => fn g => 
45754
394ecd91434a
dynamic genuine_flag in compilation of random and exhaustive
bulwahn
parents:
45753
diff
changeset

525 
fn card => fn genuine_only => fn size => g card genuine_only size 
394ecd91434a
dynamic genuine_flag in compilation of random and exhaustive
bulwahn
parents:
45753
diff
changeset

526 
> (Option.map o apsnd o map) proc) t' [] 
42159
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

527 
in 
45754
394ecd91434a
dynamic genuine_flag in compilation of random and exhaustive
bulwahn
parents:
45753
diff
changeset

528 
fn genuine_only => fn [card, size] => rpair NONE (compile card genuine_only size > 
42159
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

529 
(if Config.get ctxt quickcheck_pretty then 
45721
d1fb55c2ed65
quickcheck's compilation returns if it is genuine counterexample or a counterexample due to a match exception
bulwahn
parents:
45718
diff
changeset

530 
Option.map (apsnd (map Quickcheck_Common.post_process_term)) else I)) 
42159
234ec7011e5d
generalizing compilation scheme of quickcheck generators to multiple arguments; changing random and exhaustive tester to use one code invocation for polymorphic instances with multiple cardinalities
bulwahn
parents:
42028
diff
changeset

531 
end; 
42391  532 

41861
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

533 
fun compile_generator_exprs ctxt ts = 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

534 
let 
42361  535 
val thy = Proof_Context.theory_of ctxt 
42028
bd6515e113b2
passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents:
42027
diff
changeset

536 
val ts' = map (fn t => mk_generator_expr ctxt (t, [])) ts; 
41861
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

537 
val compiles = Code_Runtime.dynamic_value_strict 
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

538 
(Counterexample_Batch.get, put_counterexample_batch, 
41918  539 
"Exhaustive_Generators.put_counterexample_batch") 
41861
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

540 
thy (SOME target) (fn proc => map (fn g => g #> (Option.map o map) proc)) 
42195
1e7b62c93f5d
adding an exhaustive validator for quickcheck's batch validating; moving strip_imp; minimal setup for bounded_forall
bulwahn
parents:
42176
diff
changeset

541 
(HOLogic.mk_list @{typ "code_numeral => term list option"} ts') [] 
41861
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
41472
diff
changeset

542 
in 
41935
d786a8a3dc47
minor corrections for renaming; moved postprocessing of terms to Quickcheck_Common
bulwahn
parents:
41928
diff
changeset

543 
map (fn compile => fn size => compile size 
d786a8a3dc47
minor corrections for renaming; moved postprocessing of terms to Quickcheck_Common
bulwahn
parents:
41928
diff
changeset

544 
> Option.map (map Quickcheck_Common.post_process_term)) compiles 
41861
77d87dc50e5a
adding a function to compile a batch of terms for quickcheck with one code generation invocation
bulwahn
parents:
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diff
changeset

545 
end; 
42195
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546 

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547 
fun compile_validator_exprs ctxt ts = 
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548 
let 
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val thy = Proof_Context.theory_of ctxt 
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val ts' = map (mk_validator_expr ctxt) ts 
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551 
in 
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552 
Code_Runtime.dynamic_value_strict 
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553 
(Validator_Batch.get, put_validator_batch, "Exhaustive_Generators.put_validator_batch") 
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554 
thy (SOME target) (K I) (HOLogic.mk_list @{typ "code_numeral => bool"} ts') [] 
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555 
end; 
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556 

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557 
fun size_matters_for thy Ts = not (forall (fn T => Sign.of_sort thy (T, @{sort check_all})) Ts) 
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558 

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559 
val test_goals = 
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560 
Quickcheck_Common.generator_test_goal_terms ("exhaustive", (size_matters_for, compile_generator_expr)); 
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561 

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562 
(* setup *) 
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563 

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564 
val setup_exhaustive_datatype_interpretation = 
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565 
Quickcheck_Common.datatype_interpretation (@{sort exhaustive}, instantiate_exhaustive_datatype) 
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566 

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567 
val active = Attrib.setup_config_bool @{binding quickcheck_exhaustive_active} (K true); 
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568 

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569 
val setup = 
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570 
Quickcheck_Common.datatype_interpretation (@{sort full_exhaustive}, instantiate_full_exhaustive_datatype) 
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571 
(* #> Datatype.interpretation (Quickcheck_Common.ensure_sort_datatype 
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572 
(((@{sort typerep}, @{sort term_of}), @{sort exhaustive}), instantiate_exhaustive_datatype)) 
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573 
#> Datatype.interpretation (Quickcheck_Common.ensure_sort_datatype 
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(((@{sort typerep}, @{sort term_of}), @{sort fast_exhaustive}), instantiate_fast_exhaustive_datatype)) 
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575 
#> Datatype.interpretation (Quickcheck_Common.ensure_sort_datatype 
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576 
(((@{sort type}, @{sort type}), @{sort bounded_forall}), instantiate_bounded_forall_datatype))*) 
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577 
#> Context.theory_map (Quickcheck.add_tester ("exhaustive", (active, test_goals))) 
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578 
#> Context.theory_map (Quickcheck.add_batch_generator ("exhaustive", compile_generator_exprs)) 
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579 
#> Context.theory_map (Quickcheck.add_batch_validator ("exhaustive", compile_validator_exprs)); 
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580 

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581 
end; 