src/Pure/Isar/proof.ML
author wenzelm
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(*  Title:      Pure/Isar/proof.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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    License:    GPL (GNU GENERAL PUBLIC LICENSE)
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Proof states and methods.
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*)
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signature BASIC_PROOF =
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sig
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  val RANGE: (int -> tactic) list -> int -> tactic
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  val FINDGOAL: (int -> thm -> 'a Seq.seq) -> thm -> 'a Seq.seq
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  val HEADGOAL: (int -> thm -> 'a Seq.seq) -> thm -> 'a Seq.seq
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end;
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signature PROOF =
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sig
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  include BASIC_PROOF
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  type context
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  type state
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  exception STATE of string * state
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  val check_result: string -> state -> 'a Seq.seq -> 'a Seq.seq
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  val init_state: theory -> state
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  val context_of: state -> context
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  val theory_of: state -> theory
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  val sign_of: state -> Sign.sg
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  val warn_extra_tfrees: state -> state -> state
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  val reset_thms: string -> state -> state
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  val the_facts: state -> thm list
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  val the_fact: state -> thm
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  val get_goal: state -> term * (thm list * thm)
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  val goal_facts: (state -> thm list) -> state -> state
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  val use_facts: state -> state
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  val reset_facts: state -> state
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  val is_chain: state -> bool
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  val assert_forward: state -> state
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  val assert_forward_or_chain: state -> state
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  val assert_backward: state -> state
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  val assert_no_chain: state -> state
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  val enter_forward: state -> state
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  val show_hyps: bool ref
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  val pretty_thm: thm -> Pretty.T
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  val pretty_thms: thm list -> Pretty.T
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  val verbose: bool ref
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  val print_state: int -> state -> unit
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  val pretty_goals: bool -> state -> Pretty.T list
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  val level: state -> int
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  type method
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  val method: (thm list -> tactic) -> method
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  val method_cases: (thm list -> thm -> (thm * (string * RuleCases.T) list) Seq.seq) -> method
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  val refine: (context -> method) -> state -> state Seq.seq
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  val refine_end: (context -> method) -> state -> state Seq.seq
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  val export_thm: context -> thm -> thm
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  val match_bind: (string list * string) list -> state -> state
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  val match_bind_i: (term list * term) list -> state -> state
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  val let_bind: (string list * string) list -> state -> state
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  val let_bind_i: (term list * term) list -> state -> state
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  val simple_have_thms: string -> thm list -> state -> state
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  val have_thmss: ((string * context attribute list) *
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    (thm list * context attribute list) list) list -> state -> state
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  val with_thmss: ((string * context attribute list) *
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    (thm list * context attribute list) list) list -> state -> state
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  val fix: (string list * string option) list -> state -> state
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  val fix_i: (string list * typ option) list -> state -> state
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  val norm_hhf_tac: int -> tactic
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  val hard_asm_tac: int -> tactic
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  val soft_asm_tac: int -> tactic
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  val assm: ProofContext.exporter
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    -> ((string * context attribute list) * (string * (string list * string list)) list) list
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    -> state -> state
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  val assm_i: ProofContext.exporter
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    -> ((string * context attribute list) * (term * (term list * term list)) list) list
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    -> state -> state
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  val assume:
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    ((string * context attribute list) * (string * (string list * string list)) list) list
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    -> state -> state
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  val assume_i: ((string * context attribute list) * (term * (term list * term list)) list) list
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    -> state -> state
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  val presume:
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    ((string * context attribute list) * (string * (string list * string list)) list) list
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    -> state -> state
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  val presume_i: ((string * context attribute list) * (term * (term list * term list)) list) list
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    -> state -> state
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  val invoke_case: string * context attribute list -> state -> state
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  val theorem: bstring -> theory attribute list -> string * (string list * string list)
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    -> theory -> state
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  val theorem_i: bstring -> theory attribute list -> term * (term list * term list)
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    -> theory -> state
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  val lemma: bstring -> theory attribute list -> string * (string list * string list)
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    -> theory -> state
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  val lemma_i: bstring -> theory attribute list -> term * (term list * term list)
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    -> theory -> state
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  val chain: state -> state
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  val from_facts: thm list -> state -> state
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  val show: (state -> state Seq.seq) -> string -> context attribute list
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    -> string * (string list * string list) -> state -> state
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  val show_i: (state -> state Seq.seq) -> string -> context attribute list
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    -> term * (term list * term list) -> state -> state
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  val have: (state -> state Seq.seq) -> string -> context attribute list
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    -> string * (string list * string list) -> state -> state
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  val have_i: (state -> state Seq.seq) -> string -> context attribute list
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    -> term * (term list * term list) -> state -> state
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  val at_bottom: state -> bool
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  val local_qed: (state -> state Seq.seq)
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    -> ({kind: string, name: string, thm: thm} -> unit) * (thm -> unit) -> state -> state Seq.seq
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  val global_qed: (state -> state Seq.seq) -> state
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    -> (theory * {kind: string, name: string, thm: thm}) Seq.seq
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  val begin_block: state -> state
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  val end_block: state -> state Seq.seq
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  val next_block: state -> state
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end;
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signature PRIVATE_PROOF =
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sig
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  include PROOF
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  val put_data: Object.kind -> ('a -> Object.T) -> 'a -> state -> state
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end;
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structure Proof: PRIVATE_PROOF =
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struct
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(** proof state **)
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type context = ProofContext.context;
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(* type goal *)
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datatype kind =
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  Theorem of theory attribute list |    (*top-level theorem*)
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  Lemma of theory attribute list |      (*top-level lemma*)
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  Show of context attribute list |      (*intermediate result, solving subgoal*)
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  Have of context attribute list ;       (*intermediate result*)
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val kind_name =
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  fn Theorem _ => "theorem" | Lemma _ => "lemma" | Show _ => "show" | Have _ => "have";
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type goal =
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 (kind *        (*result kind*)
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  string *      (*result name*)
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  term) *       (*result statement*)
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 (thm list *    (*use facts*)
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  thm);         (*goal: subgoals ==> statement*)
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(* type mode *)
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datatype mode = Forward | ForwardChain | Backward;
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val mode_name = (fn Forward => "state" | ForwardChain => "chain" | Backward => "prove");
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(* datatype state *)
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datatype node =
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  Node of
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   {context: context,
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    facts: thm list option,
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    mode: mode,
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    goal: (goal * (state -> state Seq.seq)) option}
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and state =
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  State of
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    node *              (*current*)
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    node list;          (*parents wrt. block structure*)
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fun make_node (context, facts, mode, goal) =
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  Node {context = context, facts = facts, mode = mode, goal = goal};
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exception STATE of string * state;
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fun err_malformed name state =
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  raise STATE (name ^ ": internal error -- malformed proof state", state);
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fun check_result msg state sq =
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  (case Seq.pull sq of
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    None => raise STATE (msg, state)
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  | Some s_sq => Seq.cons s_sq);
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fun map_current f (State (Node {context, facts, mode, goal}, nodes)) =
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  State (make_node (f (context, facts, mode, goal)), nodes);
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fun init_state thy =
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  State (make_node (ProofContext.init thy, None, Forward, None), []);
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(** basic proof state operations **)
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(* context *)
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fun context_of (State (Node {context, ...}, _)) = context;
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val theory_of = ProofContext.theory_of o context_of;
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val sign_of = ProofContext.sign_of o context_of;
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fun map_context f = map_current (fn (ctxt, facts, mode, goal) => (f ctxt, facts, mode, goal));
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fun map_context_result f (state as State (Node {context, facts, mode, goal}, nodes)) =
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  let val (context', result) = f context
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  in (State (make_node (context', facts, mode, goal), nodes), result) end;
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fun put_data kind f = map_context o ProofContext.put_data kind f;
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val warn_extra_tfrees = map_context o ProofContext.warn_extra_tfrees o context_of;
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val auto_bind_goal = map_context o ProofContext.auto_bind_goal;
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val auto_bind_facts = map_context oo ProofContext.auto_bind_facts;
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val put_thms = map_context o ProofContext.put_thms;
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val put_thmss = map_context o ProofContext.put_thmss;
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val reset_thms = map_context o ProofContext.reset_thms;
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val assumptions = ProofContext.assumptions o context_of;
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val get_case = ProofContext.get_case o context_of;
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(* facts *)
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fun the_facts (State (Node {facts = Some facts, ...}, _)) = facts
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  | the_facts state = raise STATE ("No current facts available", state);
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fun the_fact state =
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  (case the_facts state of
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    [thm] => thm
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  | _ => raise STATE ("Single fact expected", state));
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fun assert_facts state = (the_facts state; state);
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fun get_facts (State (Node {facts, ...}, _)) = facts;
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val thisN = "this";
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fun put_facts facts state =
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  state
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  |> map_current (fn (ctxt, _, mode, goal) => (ctxt, facts, mode, goal))
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  |> (case facts of None => reset_thms thisN | Some ths => put_thms (thisN, ths));
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val reset_facts = put_facts None;
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fun these_factss (state, named_factss) =
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  state
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  |> put_thmss named_factss
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  |> put_facts (Some (flat (map #2 named_factss)));
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(* goal *)
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fun find_goal i (state as State (Node {goal = Some goal, ...}, _)) = (context_of state, (i, goal))
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  | find_goal i (State (Node {goal = None, ...}, node :: nodes)) =
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      find_goal (i + 1) (State (node, nodes))
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  | find_goal _ (state as State (_, [])) = err_malformed "find_goal" state;
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fun get_goal state =
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  let val (_, (_, (((_, _, t), goal), _))) = find_goal 0 state
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  in (t, goal) end;
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fun put_goal goal = map_current (fn (ctxt, facts, mode, _) => (ctxt, facts, mode, goal));
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fun map_goal f g (State (Node {context, facts, mode, goal = Some goal}, nodes)) =
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      State (make_node (f context, facts, mode, Some (g goal)), nodes)
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  | map_goal f g (State (nd, node :: nodes)) =
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      let val State (node', nodes') = map_goal f g (State (node, nodes))
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      in map_context f (State (nd, node' :: nodes')) end
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  | map_goal _ _ state = state;
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fun goal_facts get state =
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  state
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  |> map_goal I (fn ((result, (_, thm)), f) => ((result, (get state, thm)), f));
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fun use_facts state =
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  state
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  |> goal_facts the_facts
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  |> reset_facts;
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(* mode *)
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fun get_mode (State (Node {mode, ...}, _)) = mode;
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fun put_mode mode = map_current (fn (ctxt, facts, _, goal) => (ctxt, facts, mode, goal));
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val enter_forward = put_mode Forward;
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val enter_forward_chain = put_mode ForwardChain;
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val enter_backward = put_mode Backward;
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fun assert_mode pred state =
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  let val mode = get_mode state in
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    if pred mode then state
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    else raise STATE ("Illegal application of proof command in " ^ quote (mode_name mode) ^ " mode", state)
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  end;
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fun is_chain state = get_mode state = ForwardChain;
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val assert_forward = assert_mode (equal Forward);
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val assert_forward_or_chain = assert_mode (equal Forward orf equal ForwardChain);
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val assert_backward = assert_mode (equal Backward);
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val assert_no_chain = assert_mode (not_equal ForwardChain);
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(* blocks *)
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fun level (State (_, nodes)) = length nodes;
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fun open_block (State (node, nodes)) = State (node, node :: nodes);
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fun new_block state =
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  state
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  |> open_block
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  |> put_goal None;
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fun close_block (state as State (_, node :: nodes)) = State (node, nodes)
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  | close_block state = raise STATE ("Unbalanced block parentheses", state);
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(** print_state **)
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val show_hyps = ProofContext.show_hyps;
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val pretty_thm = ProofContext.pretty_thm;
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fun pretty_thms [th] = pretty_thm th
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  | pretty_thms ths = Pretty.blk (0, Pretty.fbreaks (map pretty_thm ths));
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35ebe1452c10 removed the_fact;
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val verbose = ProofContext.verbose;
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fun pretty_facts _ None = []
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  | pretty_facts s (Some ths) =
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      [Pretty.big_list (s ^ "this:") (map pretty_thm ths), Pretty.str ""];
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fun print_state nr (state as State (Node {context, facts, mode, goal = _}, nodes)) =
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  let
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63184e276c1d print_state: use begin_goal from Goals.current_goals_markers;
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    val ref (_, _, begin_goal) = Goals.current_goals_markers;
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    fun levels_up 0 = ""
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      | levels_up 1 = ", 1 level up"
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      | levels_up i = ", " ^ string_of_int i ^ " levels up";
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    fun pretty_goal (_, (i, (((kind, name, _), (goal_facts, thm)), _))) =
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wenzelm
parents: 8450
diff changeset
   336
      pretty_facts "using "
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   337
        (if mode <> Backward orelse null goal_facts then None else Some goal_facts) @
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   338
      [Pretty.str ("goal (" ^ kind_name kind ^ (if name = "" then "" else " " ^ name) ^
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   339
        levels_up (i div 2) ^ "):")] @
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   340
      Locale.pretty_goals_marker begin_goal (! goals_limit) thm;
6848
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   341
8462
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   342
    val ctxt_prts =
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   343
      if ! verbose orelse mode = Forward then ProofContext.pretty_context context
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   344
      else if mode = Backward then ProofContext.pretty_prems context
7575
e1e2d07287d8 improved output;
wenzelm
parents: 7556
diff changeset
   345
      else [];
8462
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   346
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   347
    val prts =
8582
3051aa8aa412 tuned output;
wenzelm
parents: 8561
diff changeset
   348
     [Pretty.str ("proof (" ^ mode_name mode ^ "): step " ^ string_of_int nr ^
8561
2675e2f4dc61 tuned output;
wenzelm
parents: 8542
diff changeset
   349
        (if ! verbose then ", depth " ^ string_of_int (length nodes div 2)
2675e2f4dc61 tuned output;
wenzelm
parents: 8542
diff changeset
   350
        else "")), Pretty.str ""] @
8462
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   351
     (if null ctxt_prts then [] else ctxt_prts @ [Pretty.str ""]) @
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   352
     (if ! verbose orelse mode = Forward then
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   353
       (pretty_facts "" facts @ pretty_goal (find_goal 0 state))
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   354
      else if mode = ForwardChain then pretty_facts "picking " facts
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   355
      else pretty_goal (find_goal 0 state))
7f4e4e875c13 pretty chunks;
wenzelm
parents: 8450
diff changeset
   356
  in Pretty.writeln (Pretty.chunks prts) end;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   357
10360
807992b67edd tuned goals output;
wenzelm
parents: 10350
diff changeset
   358
fun pretty_goals main_goal state =
10320
26d4b84eb047 added pretty_goals;
wenzelm
parents: 9482
diff changeset
   359
  let val (_, (_, ((_, (_, thm)), _))) = find_goal 0 state
10360
807992b67edd tuned goals output;
wenzelm
parents: 10350
diff changeset
   360
  in Locale.pretty_sub_goals main_goal (!goals_limit) thm end;
10320
26d4b84eb047 added pretty_goals;
wenzelm
parents: 9482
diff changeset
   361
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   362
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   363
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   364
(** proof steps **)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   365
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   366
(* datatype method *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   367
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   368
datatype method =
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   369
  Method of thm list -> thm -> (thm * (string * RuleCases.T) list) Seq.seq;
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   370
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   371
fun method tac = Method (fn facts => fn st => Seq.map (rpair []) (tac facts st));
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   372
val method_cases = Method;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   373
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   374
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   375
(* refine goal *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   376
8234
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   377
local
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   378
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   379
fun check_sign sg state =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   380
  if Sign.subsig (sg, sign_of state) then state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   381
  else raise STATE ("Bad signature of result: " ^ Sign.str_of_sg sg, state);
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   382
8234
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   383
fun gen_refine current_context meth_fun state =
6848
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   384
  let
8234
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   385
    val (goal_ctxt, (_, ((result, (facts, thm)), f))) = find_goal 0 state;
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   386
    val Method meth = meth_fun (if current_context then context_of state else goal_ctxt);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   387
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   388
    fun refn (thm', cases) =
6848
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   389
      state
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   390
      |> check_sign (Thm.sign_of_thm thm')
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   391
      |> map_goal (ProofContext.add_cases cases) (K ((result, (facts, thm')), f));
6848
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   392
  in Seq.map refn (meth facts thm) end;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   393
8234
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   394
in
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   395
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   396
val refine = gen_refine true;
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   397
val refine_end = gen_refine false;
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   398
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   399
end;
36a85a6c4852 refine_end;
wenzelm
parents: 8206
diff changeset
   400
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   401
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   402
(* tacticals *)
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   403
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   404
fun RANGE [] _ = all_tac
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   405
  | RANGE (tac :: tacs) i = RANGE tacs (i + 1) THEN tac i;
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   406
8152
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   407
fun FINDGOAL tac st =
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   408
  let fun find (i, n) = if i > n then Seq.fail else Seq.APPEND (tac i, find (i + 1, n))
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   409
  in find (1, Thm.nprems_of st) st end;
8152
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   410
8166
97414b447a02 added HEADGOAL;
wenzelm
parents: 8152
diff changeset
   411
fun HEADGOAL tac = tac 1;
97414b447a02 added HEADGOAL;
wenzelm
parents: 8152
diff changeset
   412
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   413
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   414
(* export results *)
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   415
6982
4d2a3f35af93 added show_hyps flag;
wenzelm
parents: 6950
diff changeset
   416
fun export_goal print_rule raw_rule inner state =
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   417
  let
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   418
    val (outer, (_, ((result, (facts, thm)), f))) = find_goal 0 state;
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   419
    val (exp_tac, tacs) = ProofContext.export_wrt true inner (Some outer);
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   420
    fun exp_rule rule =
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   421
      let
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   422
        val _ = print_rule rule;
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   423
        val thmq = FINDGOAL (Tactic.rtac rule THEN' RANGE tacs) thm;
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   424
      in Seq.map (fn th => map_goal I (K ((result, (facts, th)), f)) state) thmq end;
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   425
  in raw_rule |> exp_tac |> (Seq.flat o Seq.map exp_rule) end;
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   426
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   427
fun export_thm inner thm =
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   428
  let val (exp_tac, tacs) = ProofContext.export_wrt false inner None in
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   429
    (case Seq.chop (2, (exp_tac THEN RANGE tacs 1) thm) of
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   430
      ([thm'], _) => thm'
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   431
    | ([], _) => raise THM ("export: failed", 0, [thm])
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   432
    | _ => raise THM ("export: more than one result", 0, [thm]))
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   433
  end;
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   434
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   435
fun transfer_facts inner_state state =
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   436
  (case get_facts inner_state of
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   437
    None => Seq.single (reset_facts state)
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   438
  | Some thms =>
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   439
      let
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   440
        val (exp_tac, tacs) =
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   441
          ProofContext.export_wrt false (context_of inner_state) (Some (context_of state));
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   442
        val thmqs = map (exp_tac THEN RANGE tacs 1) thms;
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   443
      in Seq.map (fn ths => put_facts (Some ths) state) (Seq.commute thmqs) end);
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   444
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   445
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   446
(* prepare result *)
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   447
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   448
fun prep_result state t raw_thm =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   449
  let
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   450
    val ctxt = context_of state;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   451
    fun err msg = raise STATE (msg, state);
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   452
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   453
    val ngoals = Thm.nprems_of raw_thm;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   454
    val _ =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   455
      if ngoals = 0 then ()
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   456
      else (Locale.print_goals ngoals raw_thm; err (string_of_int ngoals ^ " unsolved goal(s)!"));
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   457
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   458
    val thm = raw_thm RS Drule.rev_triv_goal;
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   459
    val {hyps, prop, sign, ...} = Thm.rep_thm thm;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   460
    val tsig = Sign.tsig_of sign;
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   461
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   462
    val casms = flat (map #1 (assumptions state));
6996
1a28d968c5aa handle cgoal;
wenzelm
parents: 6982
diff changeset
   463
    val bad_hyps = Library.gen_rems Term.aconv (hyps, map (Thm.term_of o Drule.mk_cgoal) casms);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   464
  in
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   465
    if not (null bad_hyps) then
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   466
      err ("Additional hypotheses:\n" ^ cat_lines (map (Sign.string_of_term sign) bad_hyps))
7605
8bbfcb54054e added reset_thms;
wenzelm
parents: 7580
diff changeset
   467
    else if not (t aconv prop) then
8bbfcb54054e added reset_thms;
wenzelm
parents: 7580
diff changeset
   468
      err ("Proved a different theorem: " ^ Sign.string_of_term sign prop)
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   469
    else thm
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   470
  end;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   471
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   472
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   473
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   474
(*** structured proof commands ***)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   475
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   476
(** context **)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   477
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   478
(* bind *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   479
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   480
fun gen_bind f x state =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   481
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   482
  |> assert_forward
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   483
  |> map_context (f x)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   484
  |> reset_facts;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   485
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   486
val match_bind = gen_bind (ProofContext.match_bind false);
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   487
val match_bind_i = gen_bind (ProofContext.match_bind_i false);
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   488
val let_bind = gen_bind (ProofContext.match_bind true);
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   489
val let_bind_i = gen_bind (ProofContext.match_bind_i true);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   490
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   491
9196
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   492
(* have_thmss etc. *)
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   493
9196
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   494
fun have_thmss args state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   495
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   496
  |> assert_forward
9196
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   497
  |> map_context_result (ProofContext.have_thmss args)
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   498
  |> these_factss;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   499
9196
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   500
fun simple_have_thms name thms = have_thmss [((name, []), [(thms, [])])];
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   501
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   502
fun with_thmss args state =
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   503
  let val state' = state |> have_thmss args
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   504
  in state' |> simple_have_thms "" (the_facts state' @ the_facts state) end;
6876
4ae9c47f2b6b have_thmss: more_ths;
wenzelm
parents: 6871
diff changeset
   505
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   506
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   507
(* fix *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   508
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   509
fun gen_fix f xs state =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   510
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   511
  |> assert_forward
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   512
  |> map_context (f xs)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   513
  |> reset_facts;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   514
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   515
val fix = gen_fix ProofContext.fix;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   516
val fix_i = gen_fix ProofContext.fix_i;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   517
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   518
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   519
(* assume *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   520
10446
e7a8fc009d37 norm_hhf_tac;
wenzelm
parents: 10406
diff changeset
   521
val norm_hhf_tac = Tactic.rewrite_goal_tac [Drule.norm_hhf_eq];
e7a8fc009d37 norm_hhf_tac;
wenzelm
parents: 10406
diff changeset
   522
val hard_asm_tac = Tactic.etac Drule.triv_goal;
e7a8fc009d37 norm_hhf_tac;
wenzelm
parents: 10406
diff changeset
   523
val soft_asm_tac = Tactic.rtac Drule.triv_goal THEN' norm_hhf_tac;
e7a8fc009d37 norm_hhf_tac;
wenzelm
parents: 10406
diff changeset
   524
7271
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   525
local
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   526
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   527
fun gen_assume f exp args state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   528
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   529
  |> assert_forward
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   530
  |> map_context_result (f exp args)
7271
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   531
  |> (fn (st, (factss, prems)) =>
9196
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   532
    these_factss (st, factss)
1f6f66fe777a facts: handle multiple lists of arguments;
wenzelm
parents: 8991
diff changeset
   533
    |> put_thms ("prems", prems));
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   534
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   535
fun simple_exporter tac1 tac2 =
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   536
  (Seq.single oo Drule.implies_intr_list,
10446
e7a8fc009d37 norm_hhf_tac;
wenzelm
parents: 10406
diff changeset
   537
    fn is_goal => fn n => replicate n (norm_hhf_tac THEN' (if is_goal then tac1 else tac2)));
6996
1a28d968c5aa handle cgoal;
wenzelm
parents: 6982
diff changeset
   538
7271
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   539
in
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   540
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   541
val assm = gen_assume ProofContext.assume;
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   542
val assm_i = gen_assume ProofContext.assume_i;
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   543
val assume = assm (simple_exporter hard_asm_tac soft_asm_tac);
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   544
val assume_i = assm_i (simple_exporter hard_asm_tac soft_asm_tac);
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   545
val presume = assm (simple_exporter soft_asm_tac soft_asm_tac);
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   546
val presume_i = assm_i (simple_exporter soft_asm_tac soft_asm_tac);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   547
7271
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   548
end;
442456b2a8bb assume: multiple args;
wenzelm
parents: 7201
diff changeset
   549
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   550
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   551
(* invoke_case *)
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   552
8450
dc44d6533f0f invoke_case: include attributes;
wenzelm
parents: 8383
diff changeset
   553
fun invoke_case (name, atts) state =
9292
c5875175751f invoke_case: bind_skolem;
wenzelm
parents: 9196
diff changeset
   554
  let
c5875175751f invoke_case: bind_skolem;
wenzelm
parents: 9196
diff changeset
   555
    val (vars, props) = get_case state name;
c5875175751f invoke_case: bind_skolem;
wenzelm
parents: 9196
diff changeset
   556
    val bind_skolem = ProofContext.bind_skolem (context_of state) (map #1 vars);
c5875175751f invoke_case: bind_skolem;
wenzelm
parents: 9196
diff changeset
   557
  in
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   558
    state
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   559
    |> fix_i (map (fn (x, T) => ([x], Some T)) vars)
10464
b7b916a82dca tuned statement args;
wenzelm
parents: 10446
diff changeset
   560
    |> assume_i [((name, atts), map (fn t => (t, ([], []))) (map bind_skolem props))]
8374
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   561
  end;
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   562
ffb2eb084078 generalized FINDGOAL, HEADGOAL;
wenzelm
parents: 8239
diff changeset
   563
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   564
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   565
(** goals **)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   566
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   567
(* forward chaining *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   568
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   569
fun chain state =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   570
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   571
  |> assert_forward
6848
3d82756e1af5 tuned print_state;
wenzelm
parents: 6798
diff changeset
   572
  |> assert_facts
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   573
  |> enter_forward_chain;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   574
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   575
fun from_facts facts state =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   576
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   577
  |> put_facts (Some facts)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   578
  |> chain;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   579
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   580
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   581
(* setup goals *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   582
8991
dc70b797827f case 'antecedent';
wenzelm
parents: 8807
diff changeset
   583
val antN = "antecedent";
dc70b797827f case 'antecedent';
wenzelm
parents: 8807
diff changeset
   584
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   585
fun setup_goal opt_block prepp kind after_qed name atts raw_propp state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   586
  let
10464
b7b916a82dca tuned statement args;
wenzelm
parents: 10446
diff changeset
   587
    val (state', ([[prop]], gen_binds)) =
5936
406eb27fe53c match_bind(_i): 'as' patterns;
wenzelm
parents: 5918
diff changeset
   588
      state
406eb27fe53c match_bind(_i): 'as' patterns;
wenzelm
parents: 5918
diff changeset
   589
      |> assert_forward_or_chain
406eb27fe53c match_bind(_i): 'as' patterns;
wenzelm
parents: 5918
diff changeset
   590
      |> enter_forward
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   591
      |> opt_block
10464
b7b916a82dca tuned statement args;
wenzelm
parents: 10446
diff changeset
   592
      |> map_context_result (fn ct => prepp (ct, [[raw_propp]]));
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   593
    val cprop = Thm.cterm_of (sign_of state') prop;
7556
f3e78ebcf6ba setup_goal: do not insert assumptions;
wenzelm
parents: 7487
diff changeset
   594
    val goal = Drule.mk_triv_goal cprop;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   595
  in
5936
406eb27fe53c match_bind(_i): 'as' patterns;
wenzelm
parents: 5918
diff changeset
   596
    state'
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   597
    |> put_goal (Some (((kind atts, name, prop), ([], goal)), after_qed o map_context gen_binds))
10406
1820abac64fe RuleCases.make true;
wenzelm
parents: 10380
diff changeset
   598
    |> map_context (ProofContext.add_cases (RuleCases.make true goal [antN]))
6790
0a39f22f847a auto_bind_goal, auto_bind_facts;
wenzelm
parents: 6776
diff changeset
   599
    |> auto_bind_goal prop
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   600
    |> (if is_chain state then use_facts else reset_facts)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   601
    |> new_block
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   602
    |> enter_backward
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   603
  end;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   604
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   605
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   606
(*global goals*)
8095
wenzelm
parents: 7928
diff changeset
   607
fun global_goal prepp kind name atts x thy =
wenzelm
parents: 7928
diff changeset
   608
  setup_goal I prepp kind Seq.single name atts x (init_state thy);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   609
7928
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   610
val theorem = global_goal ProofContext.bind_propp Theorem;
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   611
val theorem_i = global_goal ProofContext.bind_propp_i Theorem;
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   612
val lemma = global_goal ProofContext.bind_propp Lemma;
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   613
val lemma_i = global_goal ProofContext.bind_propp_i Lemma;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   614
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   615
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   616
(*local goals*)
8095
wenzelm
parents: 7928
diff changeset
   617
fun local_goal prepp kind f name atts args state =
7928
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   618
  state
8095
wenzelm
parents: 7928
diff changeset
   619
  |> setup_goal open_block prepp kind f name atts args
7928
06a11f8cf573 improved handling of warn_extra_tfrees;
wenzelm
parents: 7924
diff changeset
   620
  |> warn_extra_tfrees state;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   621
10380
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   622
val show   = local_goal ProofContext.bind_propp Show;
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   623
val show_i = local_goal ProofContext.bind_propp_i Show;
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   624
val have   = local_goal ProofContext.bind_propp Have;
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   625
val have_i = local_goal ProofContext.bind_propp_i Have;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   626
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   627
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   628
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   629
(** conclusions **)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   630
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   631
(* current goal *)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   632
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   633
fun current_goal (State (Node {context, goal = Some goal, ...}, _)) = (context, goal)
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   634
  | current_goal state = raise STATE ("No current goal!", state);
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   635
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   636
fun assert_current_goal true (state as State (Node {goal = None, ...}, _)) =
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   637
      raise STATE ("No goal in this block!", state)
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   638
  | assert_current_goal false (state as State (Node {goal = Some _, ...}, _)) =
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   639
      raise STATE ("Goal present in this block!", state)
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   640
  | assert_current_goal _ state = state;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   641
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   642
fun assert_bottom true (state as State (_, _ :: _)) =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   643
      raise STATE ("Not at bottom of proof!", state)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   644
  | assert_bottom false (state as State (_, [])) =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   645
      raise STATE ("Already at bottom of proof!", state)
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   646
  | assert_bottom _ state = state;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   647
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   648
val at_bottom = can (assert_bottom true o close_block);
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   649
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   650
fun end_proof bot state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   651
  state
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   652
  |> assert_forward
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   653
  |> close_block
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   654
  |> assert_bottom bot
7011
7e8e9a26ba2c export init_state;
wenzelm
parents: 6996
diff changeset
   655
  |> assert_current_goal true
7e8e9a26ba2c export init_state;
wenzelm
parents: 6996
diff changeset
   656
  |> goal_facts (K []);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   657
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   658
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   659
(* local_qed *)
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   660
6982
4d2a3f35af93 added show_hyps flag;
wenzelm
parents: 6950
diff changeset
   661
fun finish_local (print_result, print_rule) state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   662
  let
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   663
    val (goal_ctxt, (((kind, name, t), (_, raw_thm)), after_qed)) = current_goal state;
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   664
    val outer_state = state |> close_block;
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   665
    val outer_ctxt = context_of outer_state;
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   666
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   667
    val result = prep_result state t raw_thm;
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   668
    val resultq = #1 (ProofContext.export_wrt false goal_ctxt (Some outer_ctxt)) result;
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   669
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   670
    val (atts, opt_solve) =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   671
      (case kind of
10380
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   672
        Show atts => (atts, export_goal print_rule result goal_ctxt)
e5370304d893 tuned names;
wenzelm
parents: 10360
diff changeset
   673
      | Have atts => (atts, Seq.single)
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   674
      | _ => err_malformed "finish_local" state);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   675
  in
6731
57e761134c85 cleaned comments;
wenzelm
parents: 6683
diff changeset
   676
    print_result {kind = kind_name kind, name = name, thm = result};
8617
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   677
    outer_state
33e2bd53aec3 support Hindley-Milner polymorphisms in binds and facts;
wenzelm
parents: 8582
diff changeset
   678
    |> auto_bind_facts name [ProofContext.generalize goal_ctxt outer_ctxt t]
9469
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   679
    |> (fn st => Seq.map (fn res =>
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   680
      have_thmss [((name, atts), [Thm.no_attributes [res]])] st) resultq)
8058d285b1cd export RANGE, hard_asm_tac, soft_asm_tac;
wenzelm
parents: 9292
diff changeset
   681
    |> (Seq.flat o Seq.map opt_solve)
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   682
    |> (Seq.flat o Seq.map after_qed)
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   683
  end;
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   684
6982
4d2a3f35af93 added show_hyps flag;
wenzelm
parents: 6950
diff changeset
   685
fun local_qed finalize print state =
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   686
  state
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   687
  |> end_proof false
6871
01866edde713 added check_result;
wenzelm
parents: 6853
diff changeset
   688
  |> finalize
6982
4d2a3f35af93 added show_hyps flag;
wenzelm
parents: 6950
diff changeset
   689
  |> (Seq.flat o Seq.map (finish_local print));
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   690
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   691
6404
2daaf2943c79 common qed and end of proofs;
wenzelm
parents: 6262
diff changeset
   692
(* global_qed *)
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   693
6950
ab6d35b7283f global_qed: removed alt_name, alt_att;
wenzelm
parents: 6932
diff changeset
   694
fun finish_global state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   695
  let
7176
a329a37ed91a local goals: after_qed;
wenzelm
parents: 7011
diff changeset
   696
    val (_, (((kind, name, t), (_, raw_thm)), _)) = current_goal state;   (*ignores after_qed!*)
8152
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   697
    val result = Drule.standard (prep_result state t raw_thm);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   698
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   699
    val atts =
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   700
      (case kind of
6950
ab6d35b7283f global_qed: removed alt_name, alt_att;
wenzelm
parents: 6932
diff changeset
   701
        Theorem atts => atts
ab6d35b7283f global_qed: removed alt_name, alt_att;
wenzelm
parents: 6932
diff changeset
   702
      | Lemma atts => atts @ [Drule.tag_lemma]
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   703
      | _ => err_malformed "finish_global" state);
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   704
6091
e3cdbd929a24 eliminated tthm type and Attribute structure;
wenzelm
parents: 6030
diff changeset
   705
    val (thy', result') = PureThy.store_thm ((name, result), atts) (theory_of state);
6529
0f4c2ebc5018 improved print_state;
wenzelm
parents: 6404
diff changeset
   706
  in (thy', {kind = kind_name kind, name = name, thm = result'}) end;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   707
6871
01866edde713 added check_result;
wenzelm
parents: 6853
diff changeset
   708
(*Note: should inspect first result only, backtracking may destroy theory*)
6950
ab6d35b7283f global_qed: removed alt_name, alt_att;
wenzelm
parents: 6932
diff changeset
   709
fun global_qed finalize state =
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   710
  state
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   711
  |> end_proof true
6871
01866edde713 added check_result;
wenzelm
parents: 6853
diff changeset
   712
  |> finalize
6950
ab6d35b7283f global_qed: removed alt_name, alt_att;
wenzelm
parents: 6932
diff changeset
   713
  |> Seq.map finish_global;
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   714
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   715
6896
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   716
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   717
(** blocks **)
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   718
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   719
(* begin_block *)
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   720
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   721
fun begin_block state =
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   722
  state
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   723
  |> assert_forward
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   724
  |> new_block
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   725
  |> open_block;
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   726
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   727
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   728
(* end_block *)
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   729
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   730
fun end_block state =
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   731
  state
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   732
  |> assert_forward
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   733
  |> close_block
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   734
  |> assert_current_goal false
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   735
  |> close_block
6932
77c14313af51 propp: 'concl' patterns;
wenzelm
parents: 6896
diff changeset
   736
  |> transfer_facts state;
6896
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   737
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   738
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   739
(* next_block *)
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   740
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   741
fun next_block state =
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   742
  state
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   743
  |> assert_forward
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   744
  |> close_block
8718
3ba75b7e1168 next_block: reset_facts;
wenzelm
parents: 8670
diff changeset
   745
  |> new_block
3ba75b7e1168 next_block: reset_facts;
wenzelm
parents: 8670
diff changeset
   746
  |> reset_facts;
6896
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   747
4bdc3600ddae close_block: transfer_used_names;
wenzelm
parents: 6891
diff changeset
   748
5820
ff3c82b47603 Proof states and methods.
wenzelm
parents:
diff changeset
   749
end;
8152
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   750
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   751
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   752
structure BasicProof: BASIC_PROOF = Proof;
ce3387fafebb replaced FIRSTGOAL by FINDGOAL (backtracking!);
wenzelm
parents: 8095
diff changeset
   753
open BasicProof;