wenzelm@5824
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(* Title: Pure/Isar/method.ML
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wenzelm@5824
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ID: $Id$
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wenzelm@5824
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Author: Markus Wenzel, TU Muenchen
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wenzelm@5824
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wenzelm@17110
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Isar proof methods.
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wenzelm@5824
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*)
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wenzelm@5824
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wenzelm@5824
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signature BASIC_METHOD =
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wenzelm@5824
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sig
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wenzelm@17110
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val FINDGOAL: (int -> thm -> 'a Seq.seq) -> thm -> 'a Seq.seq
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wenzelm@17110
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val HEADGOAL: (int -> thm -> 'a Seq.seq) -> thm -> 'a Seq.seq
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wenzelm@17110
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type method
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wenzelm@11731
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val trace_rules: bool ref
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wenzelm@5824
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val print_methods: theory -> unit
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wenzelm@20289
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val Method: bstring -> (Args.src -> Proof.context -> method) -> string -> unit
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wenzelm@5824
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end;
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wenzelm@5824
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wenzelm@5824
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signature METHOD =
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wenzelm@5824
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sig
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wenzelm@5824
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include BASIC_METHOD
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wenzelm@18227
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val apply: method -> thm list -> cases_tactic
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wenzelm@18227
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val RAW_METHOD_CASES: (thm list -> cases_tactic) -> method
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wenzelm@17110
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val RAW_METHOD: (thm list -> tactic) -> method
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wenzelm@18227
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val METHOD_CASES: (thm list -> cases_tactic) -> method
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wenzelm@17110
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val METHOD: (thm list -> tactic) -> method
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wenzelm@17110
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val fail: method
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wenzelm@17110
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val succeed: method
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val insert_tac: thm list -> int -> tactic
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wenzelm@17110
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val insert: thm list -> method
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wenzelm@17110
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val insert_facts: method
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wenzelm@17110
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val SIMPLE_METHOD: tactic -> method
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wenzelm@21592
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val SIMPLE_METHOD': (int -> tactic) -> method
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wenzelm@21592
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val SIMPLE_METHOD'': ((int -> tactic) -> tactic) -> (int -> tactic) -> method
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wenzelm@17110
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val defer: int option -> method
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wenzelm@17110
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val prefer: int -> method
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wenzelm@20289
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val cheating: bool -> Proof.context -> method
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wenzelm@17110
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val intro: thm list -> method
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wenzelm@17110
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val elim: thm list -> method
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wenzelm@20289
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val unfold: thm list -> Proof.context -> method
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wenzelm@20289
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val fold: thm list -> Proof.context -> method
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wenzelm@17110
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val atomize: bool -> method
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wenzelm@17110
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val this: method
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wenzelm@20289
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val fact: thm list -> Proof.context -> method
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wenzelm@20289
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val assumption: Proof.context -> method
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wenzelm@20289
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val close: bool -> Proof.context -> method
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wenzelm@20289
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val trace: Proof.context -> thm list -> unit
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wenzelm@6091
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val rule_tac: thm list -> thm list -> int -> tactic
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wenzelm@20289
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val some_rule_tac: thm list -> Proof.context -> thm list -> int -> tactic
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val rule: thm list -> method
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val erule: int -> thm list -> method
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val drule: int -> thm list -> method
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wenzelm@17110
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val frule: int -> thm list -> method
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wenzelm@20289
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val iprover_tac: Proof.context -> int option -> int -> tactic
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wenzelm@20289
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val set_tactic: (Proof.context -> thm list -> tactic) -> unit
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wenzelm@20289
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val tactic: string -> Proof.context -> method
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type src
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datatype text =
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Basic of (Proof.context -> method) |
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wenzelm@15703
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Source of src |
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wenzelm@20030
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Source_i of src |
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Then of text list |
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Orelse of text list |
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Try of text |
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wenzelm@19186
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Repeat1 of text |
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wenzelm@19186
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SelectGoals of int * text
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wenzelm@17857
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val primitive_text: (thm -> thm) -> text
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wenzelm@17857
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val succeed_text: text
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wenzelm@17110
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val default_text: text
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val this_text: text
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val done_text: text
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wenzelm@17356
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val sorry_text: bool -> text
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val finish_text: text option * bool -> text
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wenzelm@17110
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exception METHOD_FAIL of (string * Position.T) * exn
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wenzelm@20289
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val method: theory -> src -> Proof.context -> method
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wenzelm@20289
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val method_i: theory -> src -> Proof.context -> method
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wenzelm@20289
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val add_methods: (bstring * (src -> Proof.context -> method) * string) list
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-> theory -> theory
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wenzelm@20289
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val add_method: bstring * (src -> Proof.context -> method) * string
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wenzelm@17110
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-> theory -> theory
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wenzelm@17356
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val method_setup: bstring * string * string -> theory -> theory
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wenzelm@18999
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val syntax: (Context.generic * Args.T list -> 'a * (Context.generic * Args.T list))
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haftmann@21879
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-> src -> Proof.context -> 'a * Proof.context
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wenzelm@17110
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val simple_args: (Args.T list -> 'a * Args.T list)
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wenzelm@20289
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-> ('a -> Proof.context -> method) -> src -> Proof.context -> method
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wenzelm@20289
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val ctxt_args: (Proof.context -> method) -> src -> Proof.context -> method
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wenzelm@20289
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val no_args: method -> src -> Proof.context -> method
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wenzelm@17110
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type modifier
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wenzelm@18999
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val sectioned_args: (Context.generic * Args.T list -> 'a * (Context.generic * Args.T list)) ->
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wenzelm@17110
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(Args.T list -> modifier * Args.T list) list ->
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('a -> Proof.context -> 'b) -> src -> Proof.context -> 'b
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wenzelm@17110
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val bang_sectioned_args:
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(Args.T list -> modifier * Args.T list) list ->
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wenzelm@20289
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(thm list -> Proof.context -> 'a) -> src -> Proof.context -> 'a
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wenzelm@17110
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val bang_sectioned_args':
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(Args.T list -> modifier * Args.T list) list ->
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wenzelm@18999
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(Context.generic * Args.T list -> 'a * (Context.generic * Args.T list)) ->
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wenzelm@20289
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('a -> thm list -> Proof.context -> 'b) -> src -> Proof.context -> 'b
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wenzelm@17110
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val only_sectioned_args:
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(Args.T list -> modifier * Args.T list) list ->
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wenzelm@20289
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(Proof.context -> 'a) -> src -> Proof.context -> 'a
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wenzelm@20289
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val thms_ctxt_args: (thm list -> Proof.context -> 'a) -> src ->
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wenzelm@20289
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Proof.context -> 'a
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wenzelm@20289
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val thms_args: (thm list -> 'a) -> src -> Proof.context -> 'a
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wenzelm@20289
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val thm_args: (thm -> 'a) -> src -> Proof.context -> 'a
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wenzelm@9539
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val goal_args: (Args.T list -> 'a * Args.T list) -> ('a -> int -> tactic)
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wenzelm@20289
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-> src -> Proof.context -> method
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wenzelm@18999
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val goal_args': (Context.generic * Args.T list -> 'a * (Context.generic * Args.T list))
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wenzelm@20289
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-> ('a -> int -> tactic) -> src -> Proof.context -> method
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wenzelm@17110
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val goal_args_ctxt: (Args.T list -> 'a * Args.T list) ->
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wenzelm@20289
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(Proof.context -> 'a -> int -> tactic) -> src -> Proof.context -> method
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wenzelm@18999
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val goal_args_ctxt': (Context.generic * Args.T list -> 'a * (Context.generic * Args.T list)) ->
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wenzelm@20289
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(Proof.context -> 'a -> int -> tactic) -> src -> Proof.context -> method
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wenzelm@5824
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end;
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wenzelm@5824
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wenzelm@5824
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structure Method: METHOD =
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wenzelm@5824
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struct
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wenzelm@17110
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(** generic tools **)
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(* goal addressing *)
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fun FINDGOAL tac st =
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let fun find i n = if i > n then Seq.fail else Seq.APPEND (tac i, find (i + 1) n)
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in find 1 (Thm.nprems_of st) st end;
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wenzelm@17110
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fun HEADGOAL tac = tac 1;
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wenzelm@17110
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wenzelm@5824
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wenzelm@12324
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(** proof methods **)
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wenzelm@12324
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wenzelm@17110
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(* datatype method *)
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wenzelm@18227
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datatype method = Meth of thm list -> cases_tactic;
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wenzelm@17756
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fun apply (Meth m) = m;
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wenzelm@17756
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val RAW_METHOD_CASES = Meth;
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wenzelm@11731
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wenzelm@17110
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fun RAW_METHOD tac = RAW_METHOD_CASES (NO_CASES o tac);
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wenzelm@5824
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wenzelm@17110
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fun METHOD_CASES tac = RAW_METHOD_CASES (fn facts =>
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wenzelm@21687
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Seq.THEN (ALLGOALS Goal.conjunction_tac, tac facts));
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wenzelm@12144
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wenzelm@21687
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fun METHOD tac = RAW_METHOD (fn facts => ALLGOALS Goal.conjunction_tac THEN tac facts);
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wenzelm@5824
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wenzelm@5824
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val fail = METHOD (K no_tac);
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wenzelm@5824
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val succeed = METHOD (K all_tac);
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wenzelm@5824
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wenzelm@5824
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wenzelm@17110
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(* insert facts *)
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wenzelm@7419
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wenzelm@7419
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local
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wenzelm@5824
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wenzelm@21579
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fun cut_rule_tac rule =
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wenzelm@21579
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Tactic.rtac (Drule.forall_intr_vars rule COMP_INCR revcut_rl);
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wenzelm@6981
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wenzelm@7419
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in
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wenzelm@5824
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wenzelm@7419
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fun insert_tac [] i = all_tac
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wenzelm@7419
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| insert_tac facts i = EVERY (map (fn th => cut_rule_tac th i) facts);
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wenzelm@5824
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wenzelm@7555
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val insert_facts = METHOD (ALLGOALS o insert_tac);
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wenzelm@7664
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fun insert thms = METHOD (fn _ => ALLGOALS (insert_tac thms));
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wenzelm@6981
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wenzelm@9706
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fun SIMPLE_METHOD tac = METHOD (fn facts => ALLGOALS (insert_tac facts) THEN tac);
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wenzelm@21592
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fun SIMPLE_METHOD'' quant tac = METHOD (fn facts => quant (insert_tac facts THEN' tac));
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wenzelm@21592
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val SIMPLE_METHOD' = SIMPLE_METHOD'' HEADGOAL;
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wenzelm@9706
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wenzelm@12324
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end;
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wenzelm@12324
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wenzelm@9706
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wenzelm@17110
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(* shuffle subgoals *)
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wenzelm@17110
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wenzelm@17110
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fun prefer i = METHOD (K (Tactic.defer_tac i THEN PRIMITIVE (Thm.permute_prems 0 ~1)));
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wenzelm@18939
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fun defer opt_i = METHOD (K (Tactic.defer_tac (the_default 1 opt_i)));
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wenzelm@17110
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wenzelm@17110
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wenzelm@17356
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(* cheating *)
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wenzelm@17356
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wenzelm@17356
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fun cheating int ctxt = METHOD (K (setmp quick_and_dirty (int orelse ! quick_and_dirty)
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wenzelm@17356
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(SkipProof.cheat_tac (ProofContext.theory_of ctxt))));
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wenzelm@17356
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wenzelm@17356
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wenzelm@17110
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(* unfold intro/elim rules *)
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wenzelm@17110
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wenzelm@21592
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fun intro ths = SIMPLE_METHOD' (CHANGED_PROP o REPEAT_ALL_NEW (Tactic.match_tac ths));
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wenzelm@21592
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fun elim ths = SIMPLE_METHOD' (CHANGED_PROP o REPEAT_ALL_NEW (Tactic.ematch_tac ths));
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wenzelm@17110
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wenzelm@17110
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wenzelm@12384
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(* unfold/fold definitions *)
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wenzelm@6532
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wenzelm@18877
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fun unfold_meth ths ctxt = SIMPLE_METHOD (CHANGED_PROP (LocalDefs.unfold_tac ctxt ths));
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wenzelm@18877
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fun fold_meth ths ctxt = SIMPLE_METHOD (CHANGED_PROP (LocalDefs.fold_tac ctxt ths));
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wenzelm@12384
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wenzelm@12384
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wenzelm@12829
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(* atomize rule statements *)
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wenzelm@12829
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wenzelm@21592
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fun atomize false = SIMPLE_METHOD' (CHANGED_PROP o ObjectLogic.atomize_tac)
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wenzelm@12829
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| atomize true = RAW_METHOD (K (HEADGOAL (CHANGED_PROP o ObjectLogic.full_atomize_tac)));
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wenzelm@12829
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wenzelm@12829
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wenzelm@18039
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(* this -- resolve facts directly *)
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wenzelm@12384
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wenzelm@17110
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val this = METHOD (EVERY o map (HEADGOAL o Tactic.rtac));
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wenzelm@9484
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wenzelm@9484
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wenzelm@18039
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(* fact -- composition by facts from context *)
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wenzelm@18039
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wenzelm@21592
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fun fact [] ctxt = SIMPLE_METHOD' (ProofContext.some_fact_tac ctxt)
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wenzelm@21592
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| fact rules _ = SIMPLE_METHOD' (ProofContext.fact_tac rules);
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wenzelm@18039
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wenzelm@18039
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wenzelm@17110
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(* assumption *)
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wenzelm@7419
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wenzelm@7419
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local
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wenzelm@7419
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wenzelm@17110
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fun asm_tac ths =
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wenzelm@17110
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foldr (op APPEND') (K no_tac) (map (fn th => Tactic.rtac th THEN_ALL_NEW assume_tac) ths);
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wenzelm@7419
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wenzelm@19778
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fun cond_rtac cond rule = SUBGOAL (fn (prop, i) =>
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wenzelm@19778
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if cond (Logic.strip_assums_concl prop)
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wenzelm@19778
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then Tactic.rtac rule i else no_tac);
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wenzelm@17110
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wenzelm@17110
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fun assm_tac ctxt =
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wenzelm@17110
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assume_tac APPEND'
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wenzelm@20224
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asm_tac (Assumption.prems_of ctxt) APPEND'
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wenzelm@19778
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cond_rtac (can Logic.dest_equals) Drule.reflexive_thm APPEND'
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wenzelm@19778
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cond_rtac (can Logic.dest_term) Drule.termI;
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wenzelm@17110
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wenzelm@17110
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fun assumption_tac ctxt [] = assm_tac ctxt
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wenzelm@17110
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| assumption_tac _ [fact] = asm_tac [fact]
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wenzelm@17110
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| assumption_tac _ _ = K no_tac;
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wenzelm@7419
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wenzelm@7419
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in
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wenzelm@7419
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wenzelm@17110
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fun assumption ctxt = METHOD (HEADGOAL o assumption_tac ctxt);
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wenzelm@17356
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fun close immed ctxt = METHOD (K
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wenzelm@17356
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(FILTER Thm.no_prems ((if immed then ALLGOALS (assm_tac ctxt) else all_tac) THEN flexflex_tac)));
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wenzelm@7419
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wenzelm@7419
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end;
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wenzelm@7419
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wenzelm@7419
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wenzelm@17110
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(* rule etc. -- single-step refinements *)
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wenzelm@8335
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wenzelm@17110
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val trace_rules = ref false;
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wenzelm@5824
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wenzelm@17110
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fun trace ctxt rules =
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wenzelm@17110
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conditional (! trace_rules andalso not (null rules)) (fn () =>
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wenzelm@17110
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Pretty.big_list "rules:" (map (ProofContext.pretty_thm ctxt) rules)
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wenzelm@17110
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|> Pretty.string_of |> tracing);
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wenzelm@12347
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wenzelm@12347
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local
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wenzelm@12347
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wenzelm@18841
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fun gen_rule_tac tac rules facts =
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wenzelm@18841
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(fn i => fn st =>
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wenzelm@18841
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if null facts then tac rules i st
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wenzelm@18841
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else Seq.maps (fn rule => (tac o single) rule i st) (Drule.multi_resolves facts rules))
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wenzelm@21687
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THEN_ALL_NEW Goal.norm_hhf_tac;
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wenzelm@7130
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wenzelm@10744
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fun gen_arule_tac tac j rules facts =
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wenzelm@10744
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EVERY' (gen_rule_tac tac rules facts :: replicate j Tactic.assume_tac);
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wenzelm@10744
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wenzelm@11785
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fun gen_some_rule_tac tac arg_rules ctxt facts = SUBGOAL (fn (goal, i) =>
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wenzelm@11785
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let
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wenzelm@11785
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val rules =
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wenzelm@11785
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if not (null arg_rules) then arg_rules
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wenzelm@19482
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else flat (ContextRules.find_rules false facts goal ctxt)
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wenzelm@12055
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in trace ctxt rules; tac rules facts i end);
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wenzelm@10309
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wenzelm@10744
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fun meth tac x = METHOD (HEADGOAL o tac x);
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wenzelm@10744
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fun meth' tac x y = METHOD (HEADGOAL o tac x y);
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wenzelm@8220
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wenzelm@7419
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in
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wenzelm@7419
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wenzelm@10744
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val rule_tac = gen_rule_tac Tactic.resolve_tac;
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wenzelm@10744
|
277 |
val rule = meth rule_tac;
|
wenzelm@10744
|
278 |
val some_rule_tac = gen_some_rule_tac rule_tac;
|
wenzelm@10744
|
279 |
val some_rule = meth' some_rule_tac;
|
wenzelm@10744
|
280 |
|
wenzelm@10744
|
281 |
val erule = meth' (gen_arule_tac Tactic.eresolve_tac);
|
wenzelm@10744
|
282 |
val drule = meth' (gen_arule_tac Tactic.dresolve_tac);
|
wenzelm@10744
|
283 |
val frule = meth' (gen_arule_tac Tactic.forward_tac);
|
wenzelm@5824
|
284 |
|
wenzelm@7419
|
285 |
end;
|
wenzelm@7419
|
286 |
|
wenzelm@7419
|
287 |
|
nipkow@17587
|
288 |
(* iprover -- intuitionistic proof search *)
|
wenzelm@8195
|
289 |
|
wenzelm@17110
|
290 |
local
|
wenzelm@8195
|
291 |
|
wenzelm@17110
|
292 |
val remdups_tac = SUBGOAL (fn (g, i) =>
|
wenzelm@17110
|
293 |
let val prems = Logic.strip_assums_hyp g in
|
wenzelm@19046
|
294 |
REPEAT_DETERM_N (length prems - length (distinct op aconv prems))
|
wenzelm@17110
|
295 |
(Tactic.ematch_tac [Drule.remdups_rl] i THEN Tactic.eq_assume_tac i)
|
wenzelm@17110
|
296 |
end);
|
wenzelm@8195
|
297 |
|
wenzelm@17110
|
298 |
fun REMDUPS tac = tac THEN_ALL_NEW remdups_tac;
|
wenzelm@7419
|
299 |
|
wenzelm@17110
|
300 |
val bires_tac = Tactic.biresolution_from_nets_tac ContextRules.orderlist;
|
wenzelm@16500
|
301 |
|
wenzelm@17110
|
302 |
fun safe_step_tac ctxt =
|
wenzelm@17110
|
303 |
ContextRules.Swrap ctxt
|
wenzelm@17110
|
304 |
(eq_assume_tac ORELSE'
|
wenzelm@17110
|
305 |
bires_tac true (ContextRules.netpair_bang ctxt));
|
wenzelm@7419
|
306 |
|
wenzelm@17110
|
307 |
fun unsafe_step_tac ctxt =
|
wenzelm@17110
|
308 |
ContextRules.wrap ctxt
|
wenzelm@17110
|
309 |
(assume_tac APPEND'
|
wenzelm@17110
|
310 |
bires_tac false (ContextRules.netpair_bang ctxt) APPEND'
|
wenzelm@17110
|
311 |
bires_tac false (ContextRules.netpair ctxt));
|
wenzelm@7555
|
312 |
|
wenzelm@17110
|
313 |
fun step_tac ctxt i =
|
wenzelm@17110
|
314 |
REPEAT_DETERM1 (REMDUPS (safe_step_tac ctxt) i) ORELSE
|
wenzelm@17110
|
315 |
REMDUPS (unsafe_step_tac ctxt) i;
|
wenzelm@7419
|
316 |
|
wenzelm@17110
|
317 |
fun intprover_tac ctxt gs d lim = SUBGOAL (fn (g, i) => if d > lim then no_tac else
|
wenzelm@17110
|
318 |
let
|
wenzelm@17110
|
319 |
val ps = Logic.strip_assums_hyp g;
|
wenzelm@17110
|
320 |
val c = Logic.strip_assums_concl g;
|
wenzelm@17110
|
321 |
in
|
wenzelm@18921
|
322 |
if member (fn ((ps1, c1), (ps2, c2)) =>
|
wenzelm@19307
|
323 |
c1 aconv c2 andalso
|
wenzelm@19307
|
324 |
length ps1 = length ps2 andalso
|
wenzelm@19307
|
325 |
gen_eq_set (op aconv) (ps1, ps2)) gs (ps, c) then no_tac
|
wenzelm@17110
|
326 |
else (step_tac ctxt THEN_ALL_NEW intprover_tac ctxt ((ps, c) :: gs) (d + 1) lim) i
|
wenzelm@17110
|
327 |
end);
|
wenzelm@7419
|
328 |
|
wenzelm@17110
|
329 |
in
|
wenzelm@8238
|
330 |
|
nipkow@17587
|
331 |
fun iprover_tac ctxt opt_lim =
|
wenzelm@18939
|
332 |
SELECT_GOAL (DEEPEN (2, the_default 20 opt_lim) (intprover_tac ctxt [] 0) 4 1);
|
wenzelm@17110
|
333 |
|
wenzelm@17110
|
334 |
end;
|
wenzelm@17110
|
335 |
|
wenzelm@17110
|
336 |
|
wenzelm@8351
|
337 |
(* ML tactics *)
|
wenzelm@8351
|
338 |
|
wenzelm@20289
|
339 |
val tactic_ref = ref ((fn _ => raise Match): Proof.context -> thm list -> tactic);
|
wenzelm@8351
|
340 |
fun set_tactic f = tactic_ref := f;
|
wenzelm@8351
|
341 |
|
wenzelm@8351
|
342 |
fun tactic txt ctxt = METHOD (fn facts =>
|
wenzelm@9631
|
343 |
(Context.use_mltext
|
wenzelm@20289
|
344 |
("let fun tactic (ctxt: Proof.context) (facts: thm list) : tactic = \
|
wenzelm@16500
|
345 |
\let val thm = ProofContext.get_thm_closure ctxt o PureThy.Name\n\
|
wenzelm@16500
|
346 |
\ and thms = ProofContext.get_thms_closure ctxt o PureThy.Name in\n"
|
wenzelm@16500
|
347 |
^ txt ^
|
wenzelm@16500
|
348 |
"\nend in Method.set_tactic tactic end")
|
skalberg@15531
|
349 |
false NONE;
|
skalberg@15531
|
350 |
Context.setmp (SOME (ProofContext.theory_of ctxt)) (! tactic_ref ctxt) facts));
|
wenzelm@8351
|
351 |
|
wenzelm@8351
|
352 |
|
wenzelm@5824
|
353 |
|
wenzelm@17110
|
354 |
(** method syntax **)
|
wenzelm@5824
|
355 |
|
wenzelm@17110
|
356 |
(* method text *)
|
wenzelm@17110
|
357 |
|
wenzelm@17110
|
358 |
type src = Args.src;
|
wenzelm@17110
|
359 |
|
wenzelm@17110
|
360 |
datatype text =
|
wenzelm@20289
|
361 |
Basic of (Proof.context -> method) |
|
wenzelm@17110
|
362 |
Source of src |
|
wenzelm@20030
|
363 |
Source_i of src |
|
wenzelm@17110
|
364 |
Then of text list |
|
wenzelm@17110
|
365 |
Orelse of text list |
|
wenzelm@17110
|
366 |
Try of text |
|
wenzelm@19186
|
367 |
Repeat1 of text |
|
wenzelm@19186
|
368 |
SelectGoals of int * text;
|
wenzelm@17110
|
369 |
|
wenzelm@17857
|
370 |
val primitive_text = Basic o K o SIMPLE_METHOD o PRIMITIVE;
|
wenzelm@17857
|
371 |
val succeed_text = Basic (K succeed);
|
wenzelm@17110
|
372 |
val default_text = Source (Args.src (("default", []), Position.none));
|
wenzelm@17110
|
373 |
val this_text = Basic (K this);
|
wenzelm@17110
|
374 |
val done_text = Basic (K (SIMPLE_METHOD all_tac));
|
wenzelm@17356
|
375 |
val sorry_text = Basic o cheating;
|
wenzelm@17110
|
376 |
|
wenzelm@17356
|
377 |
fun finish_text (NONE, immed) = Basic (close immed)
|
wenzelm@17356
|
378 |
| finish_text (SOME txt, immed) = Then [txt, Basic (close immed)];
|
wenzelm@17110
|
379 |
|
wenzelm@17110
|
380 |
|
wenzelm@17110
|
381 |
(* method definitions *)
|
wenzelm@5824
|
382 |
|
wenzelm@16448
|
383 |
structure MethodsData = TheoryDataFun
|
wenzelm@16448
|
384 |
(struct
|
wenzelm@5824
|
385 |
val name = "Isar/methods";
|
wenzelm@20289
|
386 |
type T = (((src -> Proof.context -> method) * string) * stamp) NameSpace.table;
|
wenzelm@5824
|
387 |
|
wenzelm@16347
|
388 |
val empty = NameSpace.empty_table;
|
wenzelm@6546
|
389 |
val copy = I;
|
wenzelm@16448
|
390 |
val extend = I;
|
haftmann@17496
|
391 |
fun merge _ tables = NameSpace.merge_tables (eq_snd (op =)) tables handle Symtab.DUPS dups =>
|
wenzelm@16347
|
392 |
error ("Attempt to merge different versions of method(s) " ^ commas_quote dups);
|
wenzelm@5824
|
393 |
|
wenzelm@16347
|
394 |
fun print _ meths =
|
wenzelm@5824
|
395 |
let
|
wenzelm@5824
|
396 |
fun prt_meth (name, ((_, comment), _)) = Pretty.block
|
wenzelm@6849
|
397 |
[Pretty.str (name ^ ":"), Pretty.brk 2, Pretty.str comment];
|
wenzelm@5824
|
398 |
in
|
wenzelm@16347
|
399 |
[Pretty.big_list "methods:" (map prt_meth (NameSpace.extern_table meths))]
|
wenzelm@9222
|
400 |
|> Pretty.chunks |> Pretty.writeln
|
wenzelm@5824
|
401 |
end;
|
wenzelm@16448
|
402 |
end);
|
wenzelm@5824
|
403 |
|
wenzelm@18708
|
404 |
val _ = Context.add_setup MethodsData.init;
|
wenzelm@5824
|
405 |
val print_methods = MethodsData.print;
|
wenzelm@7611
|
406 |
|
wenzelm@5824
|
407 |
|
wenzelm@5824
|
408 |
(* get methods *)
|
wenzelm@5824
|
409 |
|
wenzelm@5916
|
410 |
exception METHOD_FAIL of (string * Position.T) * exn;
|
wenzelm@5916
|
411 |
|
wenzelm@20030
|
412 |
fun method_i thy =
|
wenzelm@5824
|
413 |
let
|
wenzelm@20030
|
414 |
val meths = #2 (MethodsData.get thy);
|
wenzelm@5884
|
415 |
fun meth src =
|
wenzelm@20030
|
416 |
let val ((name, _), pos) = Args.dest_src src in
|
wenzelm@17412
|
417 |
(case Symtab.lookup meths name of
|
skalberg@15531
|
418 |
NONE => error ("Unknown proof method: " ^ quote name ^ Position.str_of pos)
|
skalberg@15531
|
419 |
| SOME ((mth, _), _) => transform_failure (curry METHOD_FAIL (name, pos)) (mth src))
|
wenzelm@5824
|
420 |
end;
|
wenzelm@5824
|
421 |
in meth end;
|
wenzelm@5824
|
422 |
|
wenzelm@20030
|
423 |
fun method thy = method_i thy o Args.map_name (NameSpace.intern (#1 (MethodsData.get thy)));
|
wenzelm@20030
|
424 |
|
wenzelm@5824
|
425 |
|
wenzelm@17110
|
426 |
(* add method *)
|
wenzelm@5824
|
427 |
|
wenzelm@5824
|
428 |
fun add_methods raw_meths thy =
|
wenzelm@5824
|
429 |
let
|
wenzelm@16145
|
430 |
val new_meths = raw_meths |> map (fn (name, f, comment) =>
|
wenzelm@16347
|
431 |
(name, ((f, comment), stamp ())));
|
wenzelm@5824
|
432 |
|
wenzelm@17110
|
433 |
fun add meths = NameSpace.extend_table (Sign.naming_of thy) (meths, new_meths)
|
wenzelm@16347
|
434 |
handle Symtab.DUPS dups =>
|
wenzelm@16347
|
435 |
error ("Duplicate declaration of method(s) " ^ commas_quote dups);
|
wenzelm@16347
|
436 |
in MethodsData.map add thy end;
|
wenzelm@5824
|
437 |
|
wenzelm@9194
|
438 |
val add_method = add_methods o Library.single;
|
wenzelm@9194
|
439 |
|
wenzelm@18728
|
440 |
fun Method name meth cmt = Context.>> (add_method (name, meth, cmt));
|
wenzelm@5824
|
441 |
|
wenzelm@5824
|
442 |
|
wenzelm@17356
|
443 |
(* method_setup *)
|
wenzelm@17356
|
444 |
|
wenzelm@17356
|
445 |
fun method_setup (name, txt, cmt) =
|
wenzelm@17356
|
446 |
Context.use_let
|
wenzelm@17356
|
447 |
"val thm = PureThy.get_thm_closure (Context.the_context ()) o PureThy.Name;\n\
|
wenzelm@17356
|
448 |
\val thms = PureThy.get_thms_closure (Context.the_context ()) o PureThy.Name;\n\
|
wenzelm@20289
|
449 |
\val method: bstring * (Method.src -> Proof.context -> Proof.method) * string"
|
wenzelm@17356
|
450 |
"Method.add_method method"
|
wenzelm@17356
|
451 |
("(" ^ Library.quote name ^ ", " ^ txt ^ ", " ^ Library.quote cmt ^ ")");
|
wenzelm@17356
|
452 |
|
wenzelm@17356
|
453 |
|
wenzelm@5824
|
454 |
|
wenzelm@17110
|
455 |
(** concrete syntax **)
|
wenzelm@5824
|
456 |
|
wenzelm@5884
|
457 |
(* basic *)
|
wenzelm@5824
|
458 |
|
wenzelm@18999
|
459 |
fun syntax scan = Args.context_syntax "method" scan;
|
wenzelm@5824
|
460 |
|
wenzelm@17110
|
461 |
fun simple_args scan f src ctxt : method =
|
haftmann@21879
|
462 |
fst (syntax (Scan.lift (scan >> (fn x => f x ctxt))) src ctxt);
|
wenzelm@8351
|
463 |
|
wenzelm@20289
|
464 |
fun ctxt_args (f: Proof.context -> method) src ctxt =
|
haftmann@21879
|
465 |
fst (syntax (Scan.succeed (f ctxt)) src ctxt);
|
wenzelm@7555
|
466 |
|
wenzelm@7555
|
467 |
fun no_args m = ctxt_args (K m);
|
wenzelm@5824
|
468 |
|
wenzelm@5884
|
469 |
|
wenzelm@5884
|
470 |
(* sections *)
|
wenzelm@5884
|
471 |
|
wenzelm@20289
|
472 |
type modifier = (Proof.context -> Proof.context) * attribute;
|
wenzelm@7268
|
473 |
|
wenzelm@7268
|
474 |
local
|
wenzelm@7268
|
475 |
|
wenzelm@8381
|
476 |
fun sect ss = Scan.first (map Scan.lift ss);
|
wenzelm@19482
|
477 |
fun thms ss = Scan.repeat (Scan.unless (sect ss) Attrib.multi_thm) >> flat;
|
wenzelm@5884
|
478 |
|
wenzelm@19186
|
479 |
fun app (f, att) (context, ths) = foldl_map att (Context.map_proof f context, ths);
|
wenzelm@5884
|
480 |
|
wenzelm@18999
|
481 |
fun section ss = (sect ss -- thms ss) :-- (fn (m, ths) => Scan.depend (fn context =>
|
wenzelm@19186
|
482 |
Scan.succeed (app m (context, ths)))) >> #2;
|
wenzelm@5884
|
483 |
|
wenzelm@7601
|
484 |
fun sectioned args ss = args -- Scan.repeat (section ss);
|
wenzelm@5884
|
485 |
|
wenzelm@7268
|
486 |
in
|
wenzelm@5884
|
487 |
|
wenzelm@5884
|
488 |
fun sectioned_args args ss f src ctxt =
|
haftmann@21879
|
489 |
let val ((x, _), ctxt') = syntax (sectioned args ss) src ctxt
|
wenzelm@5921
|
490 |
in f x ctxt' end;
|
wenzelm@5884
|
491 |
|
wenzelm@7601
|
492 |
fun bang_sectioned_args ss f = sectioned_args Args.bang_facts ss f;
|
wenzelm@9777
|
493 |
fun bang_sectioned_args' ss scan f =
|
wenzelm@9777
|
494 |
sectioned_args (Args.bang_facts -- scan >> swap) ss (uncurry f);
|
wenzelm@7601
|
495 |
fun only_sectioned_args ss f = sectioned_args (Scan.succeed ()) ss (fn () => f);
|
wenzelm@7268
|
496 |
|
wenzelm@18999
|
497 |
fun thms_ctxt_args f = sectioned_args (thms []) [] f;
|
wenzelm@8093
|
498 |
fun thms_args f = thms_ctxt_args (K o f);
|
wenzelm@9706
|
499 |
fun thm_args f = thms_args (fn [thm] => f thm | _ => error "Single theorem expected");
|
wenzelm@5824
|
500 |
|
wenzelm@7268
|
501 |
end;
|
wenzelm@7268
|
502 |
|
wenzelm@5824
|
503 |
|
nipkow@17587
|
504 |
(* iprover syntax *)
|
wenzelm@12347
|
505 |
|
wenzelm@12347
|
506 |
local
|
wenzelm@12347
|
507 |
|
wenzelm@12347
|
508 |
val introN = "intro";
|
wenzelm@12347
|
509 |
val elimN = "elim";
|
wenzelm@12347
|
510 |
val destN = "dest";
|
wenzelm@12347
|
511 |
val ruleN = "rule";
|
wenzelm@12347
|
512 |
|
wenzelm@12347
|
513 |
fun modifier name kind kind' att =
|
skalberg@15531
|
514 |
Args.$$$ name |-- (kind >> K NONE || kind' |-- Args.nat --| Args.colon >> SOME)
|
wenzelm@20289
|
515 |
>> (pair (I: Proof.context -> Proof.context) o att);
|
wenzelm@12347
|
516 |
|
nipkow@17587
|
517 |
val iprover_modifiers =
|
wenzelm@18728
|
518 |
[modifier destN Args.bang_colon Args.bang ContextRules.dest_bang,
|
wenzelm@18728
|
519 |
modifier destN Args.colon (Scan.succeed ()) ContextRules.dest,
|
wenzelm@18728
|
520 |
modifier elimN Args.bang_colon Args.bang ContextRules.elim_bang,
|
wenzelm@18728
|
521 |
modifier elimN Args.colon (Scan.succeed ()) ContextRules.elim,
|
wenzelm@18728
|
522 |
modifier introN Args.bang_colon Args.bang ContextRules.intro_bang,
|
wenzelm@18728
|
523 |
modifier introN Args.colon (Scan.succeed ()) ContextRules.intro,
|
wenzelm@18728
|
524 |
Args.del -- Args.colon >> K (I, ContextRules.rule_del)];
|
wenzelm@12347
|
525 |
|
wenzelm@12347
|
526 |
in
|
wenzelm@12347
|
527 |
|
wenzelm@18640
|
528 |
val iprover_meth =
|
wenzelm@18640
|
529 |
bang_sectioned_args' iprover_modifiers (Scan.lift (Scan.option Args.nat))
|
wenzelm@18640
|
530 |
(fn n => fn prems => fn ctxt => METHOD (fn facts =>
|
wenzelm@18640
|
531 |
HEADGOAL (insert_tac (prems @ facts) THEN'
|
wenzelm@18640
|
532 |
ObjectLogic.atomize_tac THEN' iprover_tac ctxt n)));
|
wenzelm@12347
|
533 |
|
wenzelm@12347
|
534 |
end;
|
wenzelm@12347
|
535 |
|
wenzelm@12347
|
536 |
|
wenzelm@9539
|
537 |
(* tactic syntax *)
|
wenzelm@8238
|
538 |
|
wenzelm@10744
|
539 |
fun nat_thms_args f = uncurry f oo
|
haftmann@21879
|
540 |
(fst oo syntax (Scan.lift (Scan.optional (Args.parens Args.nat) 0) -- Attrib.thms));
|
wenzelm@10744
|
541 |
|
haftmann@21879
|
542 |
fun goal_args' args tac src ctxt = fst (syntax (Args.goal_spec HEADGOAL -- args >>
|
wenzelm@21592
|
543 |
(fn (quant, s) => SIMPLE_METHOD'' quant (tac s))) src ctxt);
|
wenzelm@8537
|
544 |
|
wenzelm@9539
|
545 |
fun goal_args args tac = goal_args' (Scan.lift args) tac;
|
wenzelm@8238
|
546 |
|
ballarin@14174
|
547 |
fun goal_args_ctxt' args tac src ctxt =
|
haftmann@21879
|
548 |
fst (syntax (Args.goal_spec HEADGOAL -- args >>
|
wenzelm@21592
|
549 |
(fn (quant, s) => SIMPLE_METHOD'' quant (tac ctxt s))) src ctxt);
|
wenzelm@8238
|
550 |
|
ballarin@14174
|
551 |
fun goal_args_ctxt args tac = goal_args_ctxt' (Scan.lift args) tac;
|
wenzelm@5824
|
552 |
|
wenzelm@14718
|
553 |
|
wenzelm@18708
|
554 |
(* theory setup *)
|
wenzelm@5824
|
555 |
|
wenzelm@18708
|
556 |
val _ = Context.add_setup (add_methods
|
wenzelm@5824
|
557 |
[("fail", no_args fail, "force failure"),
|
wenzelm@5824
|
558 |
("succeed", no_args succeed, "succeed"),
|
wenzelm@9587
|
559 |
("-", no_args insert_facts, "do nothing (insert current facts only)"),
|
wenzelm@9539
|
560 |
("insert", thms_args insert, "insert theorems, ignoring facts (improper)"),
|
wenzelm@12384
|
561 |
("intro", thms_args intro, "repeatedly apply introduction rules"),
|
wenzelm@12384
|
562 |
("elim", thms_args elim, "repeatedly apply elimination rules"),
|
wenzelm@18877
|
563 |
("unfold", thms_ctxt_args unfold_meth, "unfold definitions"),
|
wenzelm@18877
|
564 |
("fold", thms_ctxt_args fold_meth, "fold definitions"),
|
haftmann@21879
|
565 |
("atomize", (atomize o fst) oo syntax (Args.mode "full"),
|
wenzelm@11962
|
566 |
"present local premises as object-level statements"),
|
wenzelm@18640
|
567 |
("iprover", iprover_meth, "intuitionistic proof search"),
|
wenzelm@12384
|
568 |
("rule", thms_ctxt_args some_rule, "apply some intro/elim rule"),
|
wenzelm@10744
|
569 |
("erule", nat_thms_args erule, "apply rule in elimination manner (improper)"),
|
wenzelm@10744
|
570 |
("drule", nat_thms_args drule, "apply rule in destruct manner (improper)"),
|
wenzelm@10744
|
571 |
("frule", nat_thms_args frule, "apply rule in forward manner (improper)"),
|
wenzelm@8195
|
572 |
("this", no_args this, "apply current facts as rules"),
|
wenzelm@18039
|
573 |
("fact", thms_ctxt_args fact, "composition by facts from context"),
|
wenzelm@8238
|
574 |
("assumption", ctxt_args assumption, "proof by assumption, preferring facts"),
|
wenzelm@20335
|
575 |
("rename_tac", goal_args (Scan.repeat1 Args.name) Tactic.rename_params_tac,
|
wenzelm@20335
|
576 |
"rename parameters of goal (dynamic instantiation)"),
|
wenzelm@20335
|
577 |
("rotate_tac", goal_args (Scan.optional Args.int 1) Tactic.rotate_tac,
|
wenzelm@20335
|
578 |
"rotate assumptions of goal"),
|
wenzelm@18708
|
579 |
("tactic", simple_args Args.name tactic, "ML tactic as proof method")]);
|
wenzelm@5824
|
580 |
|
wenzelm@5824
|
581 |
|
wenzelm@16145
|
582 |
(*final declarations of this structure!*)
|
wenzelm@16145
|
583 |
val unfold = unfold_meth;
|
wenzelm@16145
|
584 |
val fold = fold_meth;
|
wenzelm@16145
|
585 |
|
wenzelm@5824
|
586 |
end;
|
wenzelm@5824
|
587 |
|
wenzelm@5824
|
588 |
structure BasicMethod: BASIC_METHOD = Method;
|
wenzelm@5824
|
589 |
open BasicMethod;
|