isabelle: src/HOL/Tools/Function/relation.ML@cbc38731d42f (annotated)

33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	1	(* Title: HOL/Tools/Function/relation.ML
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	2	Author: Alexander Krauss, TU Muenchen
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	3
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	4	Tactics to start a termination proof using a user-specified relation.
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	5	*)
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	6
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	7	signature FUNCTION_RELATION =
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	8	sig
40445 65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	9	val relation_tac: Proof.context -> (typ -> term) -> int -> tactic
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	10	val relation_infer_tac: Proof.context -> term -> int -> tactic
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	11	end
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	12
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	13	structure Function_Relation : FUNCTION_RELATION =
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	14	struct
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	15
40445 65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	16	(* tactic version *)
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	17
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	18	fun inst_state_tac inst st =
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	19	case Term.add_vars (prop_of st) [] of
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	20	[v as (_, T)] =>
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	21	let val cert = Thm.cterm_of (Thm.theory_of_thm st);
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	22	in PRIMITIVE (Thm.instantiate ([], [(cert (Var v), cert (inst T))])) st end
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	23	\| _ => Seq.empty;
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	24
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	25	fun relation_tac ctxt rel i =
59159 9312710451f5 just one data slot per program unit; wenzelm parents: 47701 diff changeset	26	TRY (Function_Common.termination_rule_tac ctxt i)
40445 65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	27	THEN inst_state_tac rel;
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	28
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	29
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	30	(* version with type inference *)
40445 65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	31
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	32	fun inst_state_infer_tac ctxt rel st =
40057 b237f757b215 relation method: re-check given term with type constraints to avoid unspecific failure if ill-typed -- keep old behaviour for tactic version krauss parents: 36636 diff changeset	33	case Term.add_vars (prop_of st) [] of
b237f757b215 relation method: re-check given term with type constraints to avoid unspecific failure if ill-typed -- keep old behaviour for tactic version krauss parents: 36636 diff changeset	34	[v as (_, T)] =>
b237f757b215 relation method: re-check given term with type constraints to avoid unspecific failure if ill-typed -- keep old behaviour for tactic version krauss parents: 36636 diff changeset	35	let
59580 cbc38731d42f eliminated some clones of Proof_Context.cterm_of traytel parents: 59159 diff changeset	36	val cert = Proof_Context.cterm_of ctxt;
40445 65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	37	val rel' = singleton (Variable.polymorphic ctxt) rel
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	38	\|> map_types Type_Infer.paramify_vars
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	39	\|> Type.constraint T
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	40	\|> Syntax.check_term ctxt
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	41	\|> cert;
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	42	in
65bd37d7d501 removed type-inference-like behaviour from relation_tac completely; tuned krauss parents: 40057 diff changeset	43	PRIMITIVE (Thm.instantiate ([], [(cert (Var v), rel')])) st
40057 b237f757b215 relation method: re-check given term with type constraints to avoid unspecific failure if ill-typed -- keep old behaviour for tactic version krauss parents: 36636 diff changeset	44	end
b237f757b215 relation method: re-check given term with type constraints to avoid unspecific failure if ill-typed -- keep old behaviour for tactic version krauss parents: 36636 diff changeset	45	\| _ => Seq.empty;
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	46
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	47	fun relation_infer_tac ctxt rel i =
59159 9312710451f5 just one data slot per program unit; wenzelm parents: 47701 diff changeset	48	TRY (Function_Common.termination_rule_tac ctxt i)
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	49	THEN inst_state_infer_tac ctxt rel;
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	50
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	51	end

author	traytel
	Tue, 03 Mar 2015 19:08:04 +0100
changeset 59580	cbc38731d42f
parent 59159	9312710451f5
child 59582	0fbed69ff081
permissions	-rw-r--r--