isabelle: src/HOL/Tools/Function/relation.ML@71574900b6ba (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
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	13	structure Function_Relation: FUNCTION_RELATION =
33100 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
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	18	fun inst_state_tac ctxt inst =
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	19	SUBGOAL (fn (goal, _) =>
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	20	(case Term.add_vars goal [] of
74282 c2ee8d993d6a clarified signature: more scalable operations; wenzelm parents: 60642 diff changeset	21	[v as (_, T)] =>
77879 dd222e2af01a tuned; wenzelm parents: 74282 diff changeset	22	PRIMITIVE (Thm.instantiate (TVars.empty, Vars.make1 (v, Thm.cterm_of ctxt (inst T))))
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	23	\| _ => no_tac));
40445 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)
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	27	THEN inst_state_tac ctxt rel i;
40445 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
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	32	fun inst_state_infer_tac ctxt rel =
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	33	SUBGOAL (fn (goal, _) =>
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	34	(case Term.add_vars goal [] of
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	35	[v as (_, T)] =>
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	36	let
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	37	val rel' =
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	38	singleton (Variable.polymorphic ctxt) rel
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	39	\|> map_types Type_Infer.paramify_vars
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	40	\|> Type.constraint T
d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	41	\|> Syntax.check_term ctxt;
77879 dd222e2af01a tuned; wenzelm parents: 74282 diff changeset	42	in PRIMITIVE (Thm.instantiate (TVars.empty, Vars.make1 (v, Thm.cterm_of ctxt rel'))) end
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	43	\| _ => no_tac));
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	44
47701 157e6108a342 more standard method setup; wenzelm parents: 42361 diff changeset	45	fun relation_infer_tac ctxt rel i =
59159 9312710451f5 just one data slot per program unit; wenzelm parents: 47701 diff changeset	46	TRY (Function_Common.termination_rule_tac ctxt i)
59968 d69dc7a133e7 more standard access to specific subgoal; wenzelm parents: 59627 diff changeset	47	THEN inst_state_infer_tac ctxt rel i;
33100 acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	48
acc2bd3934ba renamed auto_term.ML -> relation.ML krauss parents: diff changeset	49	end

author	nipkow
	Tue, 17 Jun 2025 06:29:55 +0200
changeset 82732	71574900b6ba
parent 77879	dd222e2af01a
permissions	-rw-r--r--