wenzelm@5819
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(* Title: Pure/Isar/proof_context.ML
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wenzelm@5819
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ID: $Id$
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wenzelm@5819
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Author: Markus Wenzel, TU Muenchen
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wenzelm@8807
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License: GPL (GNU GENERAL PUBLIC LICENSE)
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wenzelm@5819
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wenzelm@5819
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Proof context information.
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*)
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signature PROOF_CONTEXT =
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sig
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type context
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type exporter
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exception CONTEXT of string * context
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val theory_of: context -> theory
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val sign_of: context -> Sign.sg
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wenzelm@7557
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val prems_of: context -> thm list
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wenzelm@6985
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val show_hyps: bool ref
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wenzelm@6985
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val pretty_thm: thm -> Pretty.T
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wenzelm@6528
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val verbose: bool ref
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wenzelm@9515
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val setmp_verbose: ('a -> 'b) -> 'a -> 'b
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wenzelm@5819
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val print_binds: context -> unit
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wenzelm@5819
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val print_thms: context -> unit
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wenzelm@8373
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val print_cases: context -> unit
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wenzelm@9733
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val prems_limit: int ref
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wenzelm@8462
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val pretty_prems: context -> Pretty.T list
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wenzelm@8462
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val pretty_context: context -> Pretty.T list
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val print_proof_data: theory -> unit
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wenzelm@5874
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val init: theory -> context
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wenzelm@9470
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val assumptions: context -> (cterm list * exporter) list
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wenzelm@8616
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val fixed_names: context -> string list
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val read_typ: context -> string -> typ
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wenzelm@9504
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val read_typ_no_norm: context -> string -> typ
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val cert_typ: context -> typ -> typ
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wenzelm@9504
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val cert_typ_no_norm: context -> typ -> typ
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wenzelm@9291
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val intern_skolem: context -> term -> term
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wenzelm@9133
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val extern_skolem: context -> term -> term
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wenzelm@5874
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val read_termTs: context -> (string * typ) list -> term list * (indexname * typ) list
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val read_term: context -> string -> term
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val read_prop: context -> string -> term
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wenzelm@8096
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val read_termT_pats: context -> (string * typ) list -> term list
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val read_term_pats: typ -> context -> string list -> term list
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val read_prop_pats: context -> string list -> term list
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val cert_term: context -> term -> term
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val cert_prop: context -> term -> term
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wenzelm@8096
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val cert_term_pats: typ -> context -> term list -> term list
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wenzelm@8096
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val cert_prop_pats: context -> term list -> term list
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val declare_term: term -> context -> context
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val declare_terms: term list -> context -> context
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wenzelm@7925
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val warn_extra_tfrees: context -> context -> context
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wenzelm@8616
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val generalizeT: context -> context -> typ -> typ
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wenzelm@8616
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val generalize: context -> context -> term -> term
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wenzelm@9470
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val find_free: term -> string -> term option
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wenzelm@9553
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val norm_hhf: thm -> thm
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wenzelm@9470
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val export_wrt: bool -> context -> context option -> (thm -> thm Seq.seq) * (int -> tactic) list
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wenzelm@7925
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val auto_bind_goal: term -> context -> context
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wenzelm@7925
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val auto_bind_facts: string -> term list -> context -> context
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wenzelm@8616
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val match_bind: bool -> (string list * string) list -> context -> context
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wenzelm@8616
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val match_bind_i: bool -> (term list * term) list -> context -> context
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wenzelm@8096
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val read_propp: context * (string * (string list * string list))
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-> context * (term * (term list * term list))
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val cert_propp: context * (term * (term list * term list))
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-> context * (term * (term list * term list))
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val bind_propp: context * (string * (string list * string list))
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-> context * (term * (context -> context))
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val bind_propp_i: context * (term * (term list * term list))
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-> context * (term * (context -> context))
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wenzelm@6091
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val get_thm: context -> string -> thm
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wenzelm@9566
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val get_thm_closure: context -> string -> thm
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wenzelm@6091
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val get_thms: context -> string -> thm list
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wenzelm@9566
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val get_thms_closure: context -> string -> thm list
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wenzelm@6091
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val put_thm: string * thm -> context -> context
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wenzelm@6091
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val put_thms: string * thm list -> context -> context
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wenzelm@6091
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val put_thmss: (string * thm list) list -> context -> context
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wenzelm@7606
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val reset_thms: string -> context -> context
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wenzelm@9196
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val have_thmss:
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((string * context attribute list) * (thm list * context attribute list) list) list ->
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wenzelm@9196
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context -> context * (string * thm list) list
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wenzelm@9470
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val assume: exporter
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wenzelm@7270
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-> (string * context attribute list * (string * (string list * string list)) list) list
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wenzelm@7270
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-> context -> context * ((string * thm list) list * thm list)
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wenzelm@9470
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val assume_i: exporter
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wenzelm@7270
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-> (string * context attribute list * (term * (term list * term list)) list) list
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-> context -> context * ((string * thm list) list * thm list)
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wenzelm@8096
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val read_vars: context * (string list * string option) -> context * (string list * typ option)
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wenzelm@8096
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val cert_vars: context * (string list * typ option) -> context * (string list * typ option)
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wenzelm@7411
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val fix: (string list * string option) list -> context -> context
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wenzelm@7663
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val fix_i: (string list * typ option) list -> context -> context
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wenzelm@9291
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val bind_skolem: context -> string list -> term -> term
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wenzelm@8373
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val get_case: context -> string -> RuleCases.T
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val add_cases: (string * RuleCases.T) list -> context -> context
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val setup: (theory -> theory) list
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end;
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signature PRIVATE_PROOF_CONTEXT =
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sig
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include PROOF_CONTEXT
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val init_data: Object.kind -> (theory -> Object.T) * (context -> Object.T -> unit)
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-> theory -> theory
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val print_data: Object.kind -> context -> unit
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val get_data: Object.kind -> (Object.T -> 'a) -> context -> 'a
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val put_data: Object.kind -> ('a -> Object.T) -> 'a -> context -> context
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end;
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structure ProofContext: PRIVATE_PROOF_CONTEXT =
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struct
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(** datatype context **)
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type exporter =
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(cterm list -> thm -> thm Seq.seq) * (bool -> int -> (int -> tactic) list);
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datatype context =
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Context of
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wenzelm@6847
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{thy: theory, (*current theory*)
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data: Object.T Symtab.table, (*user data*)
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asms:
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((cterm list * exporter) list * (*assumes: A ==> _*)
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wenzelm@6931
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(string * thm list) list) *
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((string * string) list * string list), (*fixes: !!x. _*)
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wenzelm@7606
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binds: (term * typ) option Vartab.table, (*term bindings*)
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thms: thm list option Symtab.table, (*local thms*)
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wenzelm@8426
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cases: (string * RuleCases.T) list, (*local contexts*)
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defs:
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typ Vartab.table * (*type constraints*)
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sort Vartab.table * (*default sorts*)
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(string list * term list Symtab.table)}; (*used type variables*)
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exception CONTEXT of string * context;
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fun make_context (thy, data, asms, binds, thms, cases, defs) =
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Context {thy = thy, data = data, asms = asms, binds = binds, thms = thms,
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cases = cases, defs = defs};
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wenzelm@8373
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fun map_context f (Context {thy, data, asms, binds, thms, cases, defs}) =
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make_context (f (thy, data, asms, binds, thms, cases, defs));
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fun theory_of (Context {thy, ...}) = thy;
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val sign_of = Theory.sign_of o theory_of;
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fun prems_of (Context {asms = ((_, asms), _), ...}) = flat (map #2 asms);
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wenzelm@7270
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(** print context information **)
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val show_hyps = ref false;
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wenzelm@7575
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wenzelm@7575
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fun pretty_thm thm =
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if ! show_hyps then setmp Display.show_hyps true Display.pretty_thm_no_quote thm
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else Display.pretty_cterm (#prop (Thm.crep_thm thm));
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wenzelm@6985
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wenzelm@6528
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val verbose = ref false;
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wenzelm@8373
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fun verb f x = if ! verbose then f (x ()) else [];
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wenzelm@8462
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fun verb_single x = verb Library.single x;
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wenzelm@5819
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wenzelm@9515
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fun setmp_verbose f x = Library.setmp verbose true f x;
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wenzelm@9515
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wenzelm@8462
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fun pretty_items prt name items =
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let
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fun prt_itms (name, [x]) = Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt x]
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wenzelm@8462
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| prt_itms (name, xs) = Pretty.big_list (name ^ ":") (map prt xs);
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wenzelm@6721
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in
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if null items andalso not (! verbose) then []
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wenzelm@8462
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else [Pretty.big_list name (map prt_itms items)]
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wenzelm@6721
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end;
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wenzelm@5819
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wenzelm@5819
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(* term bindings *)
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val smash_option = fn (_, None) => None | (xi, Some b) => Some (xi, b);
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wenzelm@8462
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fun pretty_binds (ctxt as Context {binds, ...}) =
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let
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val prt_term = Sign.pretty_term (sign_of ctxt);
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wenzelm@8462
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fun prt_bind (xi, (t, T)) = prt_term (Logic.mk_equals (Var (xi, T), t));
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wenzelm@7606
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val bs = mapfilter smash_option (Vartab.dest binds);
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wenzelm@6721
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in
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if null bs andalso not (! verbose) then []
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wenzelm@8462
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else [Pretty.big_list "term bindings:" (map prt_bind bs)]
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wenzelm@6721
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end;
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wenzelm@5819
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wenzelm@8462
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val print_binds = Pretty.writeln o Pretty.chunks o pretty_binds;
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wenzelm@6847
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wenzelm@5819
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(* local theorems *)
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wenzelm@5819
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wenzelm@8462
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fun pretty_thms (Context {thms, ...}) =
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wenzelm@9274
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pretty_items pretty_thm "facts:" (mapfilter smash_option (Symtab.dest thms));
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wenzelm@6847
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wenzelm@8462
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val print_thms = Pretty.writeln o Pretty.chunks o pretty_thms;
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wenzelm@5819
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wenzelm@5819
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wenzelm@8373
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(* local contexts *)
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wenzelm@8373
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wenzelm@8462
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fun pretty_cases (ctxt as Context {cases, ...}) =
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wenzelm@8373
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let
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wenzelm@8373
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val prt_term = Sign.pretty_term (sign_of ctxt);
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wenzelm@8373
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wenzelm@8373
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fun prt_sect _ _ [] = []
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wenzelm@8373
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| prt_sect s prt xs = [Pretty.block (Pretty.breaks (Pretty.str s :: map prt xs))];
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wenzelm@8373
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wenzelm@8373
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fun prt_case (name, (xs, ts)) = Pretty.block (Pretty.breaks
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wenzelm@8373
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(Pretty.str (name ^ ":") ::
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wenzelm@8373
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prt_sect "fix" (prt_term o Free) xs @
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wenzelm@8373
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prt_sect "assume" (Pretty.quote o prt_term) ts));
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wenzelm@8426
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wenzelm@8426
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val cases' = rev (Library.gen_distinct Library.eq_fst cases);
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wenzelm@8373
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in
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wenzelm@8426
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if null cases andalso not (! verbose) then []
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wenzelm@8462
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else [Pretty.big_list "cases:" (map prt_case cases')]
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wenzelm@8373
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end;
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wenzelm@8373
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wenzelm@8462
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val print_cases = Pretty.writeln o Pretty.chunks o pretty_cases;
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wenzelm@8373
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wenzelm@8373
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wenzelm@9733
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(* prems *)
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wenzelm@9733
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wenzelm@9733
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val prems_limit = ref 10;
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wenzelm@5819
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wenzelm@8462
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fun pretty_prems ctxt =
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wenzelm@9733
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let
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wenzelm@9733
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val limit = ! prems_limit;
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wenzelm@9733
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val prems = prems_of ctxt;
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wenzelm@9733
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val len = length prems;
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wenzelm@9733
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val prt_prems =
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wenzelm@9733
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(if len <= limit then [] else [Pretty.str "..."]) @
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wenzelm@9733
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map pretty_thm (Library.drop (len - limit, prems));
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wenzelm@9733
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in if null prems then [] else [Pretty.big_list "prems:" prt_prems] end;
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wenzelm@9733
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wenzelm@9733
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wenzelm@9733
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(* main context *)
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wenzelm@7575
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wenzelm@8462
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fun pretty_context (ctxt as Context {asms = (_, (fixes, _)), cases,
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wenzelm@8616
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defs = (types, sorts, (used, _)), ...}) =
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wenzelm@5819
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let
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wenzelm@7575
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val sign = sign_of ctxt;
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wenzelm@5819
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wenzelm@5819
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val prt_term = Sign.pretty_term sign;
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wenzelm@5819
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val prt_typ = Sign.pretty_typ sign;
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wenzelm@5819
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val prt_sort = Sign.pretty_sort sign;
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wenzelm@5819
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wenzelm@5819
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(*theory*)
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wenzelm@5819
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val pretty_thy = Pretty.block [Pretty.str "Theory:", Pretty.brk 1, Sign.pretty_sg sign];
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wenzelm@5819
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wenzelm@5819
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(*fixes*)
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wenzelm@7606
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fun prt_fix (x, x') = Pretty.block
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wenzelm@7606
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[prt_term (Syntax.free x), Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')];
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wenzelm@7606
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wenzelm@9515
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fun prt_fixes [] = []
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wenzelm@9515
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| prt_fixes xs = [Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 ::
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wenzelm@9515
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Pretty.commas (map prt_fix xs))];
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wenzelm@7200
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wenzelm@8373
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(*defaults*)
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wenzelm@5819
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fun prt_atom prt prtT (x, X) = Pretty.block
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wenzelm@5819
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[prt x, Pretty.str " ::", Pretty.brk 1, prtT X];
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wenzelm@5819
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wenzelm@5819
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fun prt_var (x, ~1) = prt_term (Syntax.free x)
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wenzelm@5819
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| prt_var xi = prt_term (Syntax.var xi);
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wenzelm@5819
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wenzelm@5819
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fun prt_varT (x, ~1) = prt_typ (TFree (x, []))
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wenzelm@5819
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| prt_varT xi = prt_typ (TVar (xi, []));
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wenzelm@5819
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wenzelm@5819
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val prt_defT = prt_atom prt_var prt_typ;
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wenzelm@5819
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val prt_defS = prt_atom prt_varT prt_sort;
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wenzelm@5819
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in
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wenzelm@8462
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verb_single (K pretty_thy) @
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wenzelm@9515
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prt_fixes (rev (filter_out (can Syntax.dest_internal o #1) fixes)) @
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wenzelm@8462
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pretty_prems ctxt @
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wenzelm@8462
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verb pretty_binds (K ctxt) @
|
wenzelm@8462
|
272 |
verb pretty_thms (K ctxt) @
|
wenzelm@8462
|
273 |
verb pretty_cases (K ctxt) @
|
wenzelm@8462
|
274 |
verb_single (fn () => Pretty.big_list "type constraints:" (map prt_defT (Vartab.dest types))) @
|
wenzelm@8462
|
275 |
verb_single (fn () => Pretty.big_list "default sorts:" (map prt_defS (Vartab.dest sorts))) @
|
wenzelm@8462
|
276 |
verb_single (fn () => Pretty.strs ("used type variable names:" :: used))
|
wenzelm@5819
|
277 |
end;
|
wenzelm@5819
|
278 |
|
wenzelm@5819
|
279 |
|
wenzelm@5819
|
280 |
|
wenzelm@5819
|
281 |
(** user data **)
|
wenzelm@5819
|
282 |
|
wenzelm@5819
|
283 |
(* errors *)
|
wenzelm@5819
|
284 |
|
wenzelm@5819
|
285 |
fun of_theory thy = "\nof theory " ^ Sign.str_of_sg (Theory.sign_of thy);
|
wenzelm@5819
|
286 |
|
wenzelm@5819
|
287 |
fun err_inconsistent kinds =
|
wenzelm@5819
|
288 |
error ("Attempt to merge different versions of " ^ commas_quote kinds ^ " proof data");
|
wenzelm@5819
|
289 |
|
wenzelm@5819
|
290 |
fun err_dup_init thy kind =
|
wenzelm@5819
|
291 |
error ("Duplicate initialization of " ^ quote kind ^ " proof data" ^ of_theory thy);
|
wenzelm@5819
|
292 |
|
wenzelm@5819
|
293 |
fun err_undef ctxt kind =
|
wenzelm@5819
|
294 |
raise CONTEXT ("Tried to access undefined " ^ quote kind ^ " proof data", ctxt);
|
wenzelm@5819
|
295 |
|
wenzelm@5819
|
296 |
fun err_uninit ctxt kind =
|
wenzelm@5819
|
297 |
raise CONTEXT ("Tried to access uninitialized " ^ quote kind ^ " proof data" ^
|
wenzelm@5819
|
298 |
of_theory (theory_of ctxt), ctxt);
|
wenzelm@5819
|
299 |
|
wenzelm@5819
|
300 |
fun err_access ctxt kind =
|
wenzelm@5819
|
301 |
raise CONTEXT ("Unauthorized access to " ^ quote kind ^ " proof data" ^
|
wenzelm@5819
|
302 |
of_theory (theory_of ctxt), ctxt);
|
wenzelm@5819
|
303 |
|
wenzelm@5819
|
304 |
|
wenzelm@5819
|
305 |
(* data kind 'Isar/proof_data' *)
|
wenzelm@5819
|
306 |
|
wenzelm@5819
|
307 |
structure ProofDataDataArgs =
|
wenzelm@5819
|
308 |
struct
|
wenzelm@5819
|
309 |
val name = "Isar/proof_data";
|
wenzelm@5819
|
310 |
type T = (Object.kind * ((theory -> Object.T) * (context -> Object.T -> unit))) Symtab.table;
|
wenzelm@5819
|
311 |
|
wenzelm@5819
|
312 |
val empty = Symtab.empty;
|
wenzelm@6550
|
313 |
val copy = I;
|
wenzelm@5819
|
314 |
val prep_ext = I;
|
wenzelm@5819
|
315 |
fun merge tabs = Symtab.merge (Object.eq_kind o pairself fst) tabs
|
wenzelm@5819
|
316 |
handle Symtab.DUPS kinds => err_inconsistent kinds;
|
wenzelm@5819
|
317 |
fun print _ tab = Pretty.writeln (Pretty.strs (map #1 (Symtab.dest tab)));
|
wenzelm@5819
|
318 |
end;
|
wenzelm@5819
|
319 |
|
wenzelm@5819
|
320 |
structure ProofDataData = TheoryDataFun(ProofDataDataArgs);
|
wenzelm@5819
|
321 |
val print_proof_data = ProofDataData.print;
|
wenzelm@5819
|
322 |
|
wenzelm@5819
|
323 |
|
wenzelm@5819
|
324 |
(* init proof data *)
|
wenzelm@5819
|
325 |
|
wenzelm@5819
|
326 |
fun init_data kind meths thy =
|
wenzelm@5819
|
327 |
let
|
wenzelm@5819
|
328 |
val name = Object.name_of_kind kind;
|
wenzelm@5819
|
329 |
val tab = Symtab.update_new ((name, (kind, meths)), ProofDataData.get thy)
|
wenzelm@5819
|
330 |
handle Symtab.DUP _ => err_dup_init thy name;
|
wenzelm@5819
|
331 |
in thy |> ProofDataData.put tab end;
|
wenzelm@5819
|
332 |
|
wenzelm@5819
|
333 |
|
wenzelm@5819
|
334 |
(* access data *)
|
wenzelm@5819
|
335 |
|
wenzelm@5819
|
336 |
fun lookup_data (ctxt as Context {data, ...}) kind =
|
wenzelm@5819
|
337 |
let
|
wenzelm@5819
|
338 |
val thy = theory_of ctxt;
|
wenzelm@5819
|
339 |
val name = Object.name_of_kind kind;
|
wenzelm@5819
|
340 |
in
|
wenzelm@5819
|
341 |
(case Symtab.lookup (ProofDataData.get thy, name) of
|
wenzelm@5819
|
342 |
Some (k, meths) =>
|
wenzelm@5819
|
343 |
if Object.eq_kind (kind, k) then
|
wenzelm@5819
|
344 |
(case Symtab.lookup (data, name) of
|
wenzelm@5819
|
345 |
Some x => (x, meths)
|
wenzelm@5819
|
346 |
| None => err_undef ctxt name)
|
wenzelm@5819
|
347 |
else err_access ctxt name
|
wenzelm@5819
|
348 |
| None => err_uninit ctxt name)
|
wenzelm@5819
|
349 |
end;
|
wenzelm@5819
|
350 |
|
wenzelm@5819
|
351 |
fun get_data kind f ctxt =
|
wenzelm@5819
|
352 |
let val (x, _) = lookup_data ctxt kind
|
wenzelm@5819
|
353 |
in f x handle Match => Object.kind_error kind end;
|
wenzelm@5819
|
354 |
|
wenzelm@5819
|
355 |
fun print_data kind ctxt =
|
wenzelm@5819
|
356 |
let val (x, (_, prt)) = lookup_data ctxt kind
|
wenzelm@5819
|
357 |
in prt ctxt x end;
|
wenzelm@5819
|
358 |
|
wenzelm@5819
|
359 |
fun put_data kind f x ctxt =
|
wenzelm@8373
|
360 |
(lookup_data ctxt kind;
|
wenzelm@8373
|
361 |
ctxt |> map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8373
|
362 |
(thy, Symtab.update ((Object.name_of_kind kind, f x), data), asms, binds, thms, cases, defs)));
|
wenzelm@5819
|
363 |
|
wenzelm@5819
|
364 |
|
wenzelm@5819
|
365 |
(* init context *)
|
wenzelm@5819
|
366 |
|
wenzelm@5874
|
367 |
fun init thy =
|
wenzelm@5874
|
368 |
let val data = Symtab.map (fn (_, (f, _)) => f thy) (ProofDataData.get thy) in
|
wenzelm@8426
|
369 |
make_context (thy, data, (([], []), ([], [])), Vartab.empty, Symtab.empty, [],
|
wenzelm@8616
|
370 |
(Vartab.empty, Vartab.empty, ([], Symtab.empty)))
|
wenzelm@5819
|
371 |
end;
|
wenzelm@5819
|
372 |
|
wenzelm@5819
|
373 |
|
wenzelm@8616
|
374 |
(* get assumptions *)
|
wenzelm@8616
|
375 |
|
wenzelm@8616
|
376 |
fun assumptions (Context {asms = ((asms, _), _), ...}) = asms;
|
wenzelm@8616
|
377 |
fun fixed_names (Context {asms = (_, (fixes, _)), ...}) = map #2 fixes;
|
wenzelm@8616
|
378 |
fun used_table (Context {defs = (_, _, (_, tab)), ...}) = tab;
|
wenzelm@8616
|
379 |
|
wenzelm@8616
|
380 |
|
wenzelm@8096
|
381 |
|
wenzelm@7663
|
382 |
(** default sorts and types **)
|
wenzelm@7663
|
383 |
|
wenzelm@7670
|
384 |
fun def_sort (Context {defs = (_, sorts, _), ...}) xi = Vartab.lookup (sorts, xi);
|
wenzelm@7663
|
385 |
|
wenzelm@7670
|
386 |
fun def_type (Context {binds, defs = (types, _, _), ...}) is_pat xi =
|
wenzelm@7663
|
387 |
(case Vartab.lookup (types, xi) of
|
wenzelm@7663
|
388 |
None =>
|
wenzelm@8616
|
389 |
if is_pat then None else
|
wenzelm@8616
|
390 |
(case Vartab.lookup (binds, xi) of
|
wenzelm@8616
|
391 |
Some (Some (_, T)) => Some (TypeInfer.polymorphicT T)
|
wenzelm@8616
|
392 |
| _ => None)
|
wenzelm@7663
|
393 |
| some => some);
|
wenzelm@7663
|
394 |
|
wenzelm@7663
|
395 |
|
wenzelm@5819
|
396 |
|
wenzelm@5819
|
397 |
(** prepare types **)
|
wenzelm@5819
|
398 |
|
wenzelm@9504
|
399 |
local
|
wenzelm@9504
|
400 |
|
wenzelm@9504
|
401 |
fun read_typ_aux read ctxt s =
|
wenzelm@9504
|
402 |
transform_error (read (sign_of ctxt, def_sort ctxt)) s
|
wenzelm@7663
|
403 |
handle ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt);
|
wenzelm@5819
|
404 |
|
wenzelm@9504
|
405 |
fun cert_typ_aux cert ctxt raw_T = cert (sign_of ctxt) raw_T
|
wenzelm@9504
|
406 |
handle TYPE (msg, _, _) => raise CONTEXT (msg, ctxt);
|
wenzelm@9504
|
407 |
|
wenzelm@9504
|
408 |
in
|
wenzelm@9504
|
409 |
|
wenzelm@9504
|
410 |
val read_typ = read_typ_aux Sign.read_typ;
|
wenzelm@9504
|
411 |
val read_typ_no_norm = read_typ_aux Sign.read_typ_no_norm;
|
wenzelm@9504
|
412 |
val cert_typ = cert_typ_aux Sign.certify_typ;
|
wenzelm@9504
|
413 |
val cert_typ_no_norm = cert_typ_aux Sign.certify_typ_no_norm;
|
wenzelm@9504
|
414 |
|
wenzelm@9504
|
415 |
end;
|
wenzelm@9504
|
416 |
|
wenzelm@5819
|
417 |
|
wenzelm@5819
|
418 |
|
wenzelm@7670
|
419 |
(* internalize Skolem constants *)
|
wenzelm@5819
|
420 |
|
wenzelm@9133
|
421 |
fun fixes_of (Context {asms = (_, (fixes, _)), ...}) = fixes;
|
wenzelm@9133
|
422 |
fun get_skolem ctxt x = assoc (fixes_of ctxt, x);
|
wenzelm@5819
|
423 |
|
wenzelm@9325
|
424 |
fun no_skolem no_internal ctxt x =
|
wenzelm@9291
|
425 |
if can Syntax.dest_skolem x then
|
wenzelm@5819
|
426 |
raise CONTEXT ("Illegal reference to internal Skolem constant: " ^ quote x, ctxt)
|
wenzelm@9325
|
427 |
else if no_internal andalso can Syntax.dest_internal x then
|
wenzelm@9291
|
428 |
raise CONTEXT ("Illegal reference to internal variable: " ^ quote x, ctxt)
|
wenzelm@5819
|
429 |
else x;
|
wenzelm@5819
|
430 |
|
wenzelm@9291
|
431 |
fun intern_skolem ctxt =
|
wenzelm@5819
|
432 |
let
|
wenzelm@5819
|
433 |
fun intern (t as Free (x, T)) =
|
wenzelm@9325
|
434 |
(case get_skolem ctxt (no_skolem true ctxt x) of
|
wenzelm@5819
|
435 |
Some x' => Free (x', T)
|
wenzelm@5819
|
436 |
| None => t)
|
wenzelm@5819
|
437 |
| intern (t $ u) = intern t $ intern u
|
wenzelm@5819
|
438 |
| intern (Abs (x, T, t)) = Abs (x, T, intern t)
|
wenzelm@5819
|
439 |
| intern a = a;
|
wenzelm@5819
|
440 |
in intern end;
|
wenzelm@5819
|
441 |
|
wenzelm@7679
|
442 |
|
wenzelm@9133
|
443 |
(* externalize Skolem constants -- for printing purposes only *)
|
wenzelm@9133
|
444 |
|
wenzelm@9133
|
445 |
fun extern_skolem ctxt =
|
wenzelm@9133
|
446 |
let
|
wenzelm@9133
|
447 |
val rev_fixes = map Library.swap (fixes_of ctxt);
|
wenzelm@9133
|
448 |
|
wenzelm@9133
|
449 |
fun extern (t as Free (x, T)) =
|
wenzelm@9133
|
450 |
(case assoc (rev_fixes, x) of
|
wenzelm@9133
|
451 |
Some x' => Free (if get_skolem ctxt x' = Some x then x' else NameSpace.hidden x', T)
|
wenzelm@9133
|
452 |
| None => t)
|
wenzelm@9133
|
453 |
| extern (t $ u) = extern t $ extern u
|
wenzelm@9133
|
454 |
| extern (Abs (x, T, t)) = Abs (x, T, extern t)
|
wenzelm@9133
|
455 |
| extern a = a;
|
wenzelm@9133
|
456 |
in extern end
|
wenzelm@9133
|
457 |
|
wenzelm@8096
|
458 |
|
wenzelm@7679
|
459 |
(** prepare terms and propositions **)
|
wenzelm@7679
|
460 |
|
wenzelm@7679
|
461 |
(*
|
wenzelm@7679
|
462 |
(1) read / certify wrt. signature of context
|
wenzelm@7679
|
463 |
(2) intern Skolem constants
|
wenzelm@7679
|
464 |
(3) expand term bindings
|
wenzelm@7679
|
465 |
*)
|
wenzelm@7679
|
466 |
|
wenzelm@7679
|
467 |
|
wenzelm@7679
|
468 |
(* read / certify wrt. signature *) (*exception ERROR*) (*exception TERM*)
|
wenzelm@7679
|
469 |
|
wenzelm@7679
|
470 |
fun read_def_termTs freeze sg (types, sorts, used) sTs =
|
wenzelm@8616
|
471 |
Sign.read_def_terms (sg, types, sorts) used freeze sTs;
|
wenzelm@7679
|
472 |
|
wenzelm@7679
|
473 |
fun read_def_termT freeze sg defs sT = apfst hd (read_def_termTs freeze sg defs [sT]);
|
wenzelm@7679
|
474 |
|
wenzelm@8096
|
475 |
fun read_term_sg freeze sg defs s = #1 (read_def_termT freeze sg defs (s, TypeInfer.logicT));
|
wenzelm@8096
|
476 |
fun read_prop_sg freeze sg defs s = #1 (read_def_termT freeze sg defs (s, propT));
|
wenzelm@7679
|
477 |
|
wenzelm@7679
|
478 |
|
wenzelm@7679
|
479 |
fun cert_term_sg sg t = Thm.term_of (Thm.cterm_of sg t);
|
wenzelm@7679
|
480 |
|
wenzelm@7679
|
481 |
fun cert_prop_sg sg tm =
|
wenzelm@7679
|
482 |
let
|
wenzelm@7679
|
483 |
val ctm = Thm.cterm_of sg tm;
|
wenzelm@7679
|
484 |
val {t, T, ...} = Thm.rep_cterm ctm;
|
wenzelm@7679
|
485 |
in
|
wenzelm@7679
|
486 |
if T = propT then t
|
wenzelm@7679
|
487 |
else raise TERM ("Term not of type prop", [t])
|
wenzelm@7679
|
488 |
end;
|
wenzelm@7670
|
489 |
|
wenzelm@5819
|
490 |
|
wenzelm@5819
|
491 |
(* norm_term *)
|
wenzelm@5819
|
492 |
|
wenzelm@5819
|
493 |
(*beta normal form for terms (not eta normal form), chase variables in
|
wenzelm@5819
|
494 |
bindings environment (code taken from Pure/envir.ML)*)
|
wenzelm@5819
|
495 |
|
wenzelm@8616
|
496 |
fun unifyT ctxt (T, U) =
|
wenzelm@8616
|
497 |
let val maxidx = Int.max (Term.maxidx_of_typ T, Term.maxidx_of_typ U)
|
wenzelm@8616
|
498 |
in #1 (Type.unify (Sign.tsig_of (sign_of ctxt)) maxidx Vartab.empty (T, U)) end;
|
wenzelm@8616
|
499 |
|
wenzelm@5819
|
500 |
fun norm_term (ctxt as Context {binds, ...}) =
|
wenzelm@5819
|
501 |
let
|
wenzelm@5819
|
502 |
(*raised when norm has no effect on a term, to do sharing instead of copying*)
|
wenzelm@5819
|
503 |
exception SAME;
|
wenzelm@5819
|
504 |
|
wenzelm@5819
|
505 |
fun norm (t as Var (xi, T)) =
|
wenzelm@5819
|
506 |
(case Vartab.lookup (binds, xi) of
|
wenzelm@7606
|
507 |
Some (Some (u, U)) =>
|
wenzelm@8616
|
508 |
let
|
wenzelm@8616
|
509 |
val env = unifyT ctxt (T, U) handle Type.TUNIFY =>
|
wenzelm@8616
|
510 |
raise TYPE ("norm_term: ill-typed variable assigment", [T, U], [t, u]);
|
wenzelm@8616
|
511 |
val u' = Term.subst_TVars_Vartab env u;
|
wenzelm@8616
|
512 |
in norm u' handle SAME => u' end
|
wenzelm@7606
|
513 |
| _ => raise CONTEXT ("Unbound schematic variable: " ^ Syntax.string_of_vname xi, ctxt))
|
wenzelm@5819
|
514 |
| norm (Abs (a, T, body)) = Abs (a, T, norm body)
|
wenzelm@5819
|
515 |
| norm (Abs (_, _, body) $ t) = normh (subst_bound (t, body))
|
wenzelm@5819
|
516 |
| norm (f $ t) =
|
wenzelm@5819
|
517 |
((case norm f of
|
wenzelm@5819
|
518 |
Abs (_, _, body) => normh (subst_bound (t, body))
|
wenzelm@5819
|
519 |
| nf => nf $ (norm t handle SAME => t)) handle SAME => f $ norm t)
|
wenzelm@5819
|
520 |
| norm _ = raise SAME
|
wenzelm@5819
|
521 |
and normh t = norm t handle SAME => t
|
wenzelm@5819
|
522 |
in normh end;
|
wenzelm@5819
|
523 |
|
wenzelm@5819
|
524 |
|
wenzelm@6550
|
525 |
(* dummy patterns *)
|
wenzelm@6550
|
526 |
|
wenzelm@9540
|
527 |
fun prepare_dummies t = #2 (Term.replace_dummy_patterns (1, t));
|
wenzelm@6762
|
528 |
|
wenzelm@9540
|
529 |
fun reject_dummies ctxt t = Term.no_dummy_patterns t
|
wenzelm@9540
|
530 |
handle TERM _ => raise CONTEXT ("Illegal dummy pattern(s) in term", ctxt);
|
wenzelm@6550
|
531 |
|
wenzelm@6550
|
532 |
|
wenzelm@5819
|
533 |
(* read terms *)
|
wenzelm@5819
|
534 |
|
wenzelm@8616
|
535 |
fun gen_read read app is_pat (ctxt as Context {defs = (_, _, (used, _)), ...}) s =
|
wenzelm@7663
|
536 |
(transform_error (read (sign_of ctxt) (def_type ctxt is_pat, def_sort ctxt, used)) s
|
wenzelm@7663
|
537 |
handle TERM (msg, _) => raise CONTEXT (msg, ctxt)
|
wenzelm@7663
|
538 |
| ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt))
|
wenzelm@9291
|
539 |
|> app (intern_skolem ctxt)
|
wenzelm@7663
|
540 |
|> app (if is_pat then I else norm_term ctxt)
|
wenzelm@7663
|
541 |
|> app (if is_pat then prepare_dummies else (reject_dummies ctxt));
|
wenzelm@5819
|
542 |
|
wenzelm@5874
|
543 |
val read_termTs = gen_read (read_def_termTs false) (apfst o map) false;
|
wenzelm@8096
|
544 |
val read_termT_pats = #1 oo gen_read (read_def_termTs false) (apfst o map) true;
|
wenzelm@8096
|
545 |
|
wenzelm@8096
|
546 |
fun read_term_pats T ctxt pats = read_termT_pats ctxt (map (rpair T) pats);
|
wenzelm@8096
|
547 |
val read_prop_pats = read_term_pats propT;
|
wenzelm@8096
|
548 |
|
wenzelm@6762
|
549 |
val read_term = gen_read (read_term_sg true) I false;
|
wenzelm@6762
|
550 |
val read_prop = gen_read (read_prop_sg true) I false;
|
wenzelm@5819
|
551 |
|
wenzelm@5819
|
552 |
|
wenzelm@5819
|
553 |
(* certify terms *)
|
wenzelm@5819
|
554 |
|
wenzelm@8616
|
555 |
fun gen_cert cert is_pat ctxt t = t
|
wenzelm@8616
|
556 |
|> (if is_pat then I else norm_term ctxt)
|
wenzelm@8616
|
557 |
|> (fn t' => cert (sign_of ctxt) t' handle TERM (msg, _) => raise CONTEXT (msg, ctxt));
|
wenzelm@5819
|
558 |
|
wenzelm@5819
|
559 |
val cert_term = gen_cert cert_term_sg false;
|
wenzelm@5819
|
560 |
val cert_prop = gen_cert cert_prop_sg false;
|
wenzelm@8096
|
561 |
|
wenzelm@8096
|
562 |
fun cert_term_pats _ = map o gen_cert cert_term_sg true;
|
wenzelm@8096
|
563 |
val cert_prop_pats = map o gen_cert cert_prop_sg true;
|
wenzelm@5819
|
564 |
|
wenzelm@5819
|
565 |
|
wenzelm@5819
|
566 |
(* declare terms *)
|
wenzelm@5819
|
567 |
|
wenzelm@5819
|
568 |
val ins_types = foldl_aterms
|
wenzelm@5819
|
569 |
(fn (types, Free (x, T)) => Vartab.update (((x, ~1), T), types)
|
wenzelm@5819
|
570 |
| (types, Var v) => Vartab.update (v, types)
|
wenzelm@5819
|
571 |
| (types, _) => types);
|
wenzelm@5819
|
572 |
|
wenzelm@5819
|
573 |
val ins_sorts = foldl_types (foldl_atyps
|
wenzelm@5819
|
574 |
(fn (sorts, TFree (x, S)) => Vartab.update (((x, ~1), S), sorts)
|
wenzelm@5819
|
575 |
| (sorts, TVar v) => Vartab.update (v, sorts)
|
wenzelm@5819
|
576 |
| (sorts, _) => sorts));
|
wenzelm@5819
|
577 |
|
wenzelm@8616
|
578 |
val ins_used = foldl_term_types (fn t => foldl_atyps
|
wenzelm@8616
|
579 |
(fn ((used, tab), TFree (x, _)) => (x ins used, Symtab.update_multi ((x, t), tab))
|
wenzelm@5819
|
580 |
| (used, _) => used));
|
wenzelm@5819
|
581 |
|
wenzelm@7663
|
582 |
fun ins_skolem def_ty = foldr
|
wenzelm@5994
|
583 |
(fn ((x, x'), types) =>
|
wenzelm@7663
|
584 |
(case def_ty x' of
|
wenzelm@5994
|
585 |
Some T => Vartab.update (((x, ~1), T), types)
|
wenzelm@5994
|
586 |
| None => types));
|
wenzelm@5994
|
587 |
|
wenzelm@8373
|
588 |
fun map_defaults f = map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8373
|
589 |
(thy, data, asms, binds, thms, cases, f defs));
|
wenzelm@5819
|
590 |
|
wenzelm@5994
|
591 |
fun declare (ctxt as Context {asms = (_, (fixes, _)), ...}, t) =
|
wenzelm@5819
|
592 |
ctxt
|
wenzelm@7670
|
593 |
|> map_defaults (fn (types, sorts, used) => (ins_types (types, t), sorts, used))
|
wenzelm@7670
|
594 |
|> map_defaults (fn (types, sorts, used) => (types, ins_sorts (sorts, t), used))
|
wenzelm@7670
|
595 |
|> map_defaults (fn (types, sorts, used) => (types, sorts, ins_used (used, t)))
|
wenzelm@7670
|
596 |
|> map_defaults (fn (types, sorts, used) =>
|
wenzelm@7670
|
597 |
(ins_skolem (fn x => Vartab.lookup (types, (x, ~1))) (fixes, types), sorts, used));
|
wenzelm@5819
|
598 |
|
wenzelm@5819
|
599 |
|
wenzelm@5819
|
600 |
fun declare_term t ctxt = declare (ctxt, t);
|
wenzelm@5819
|
601 |
fun declare_terms ts ctxt = foldl declare (ctxt, ts);
|
wenzelm@5819
|
602 |
|
wenzelm@5819
|
603 |
|
wenzelm@8616
|
604 |
|
wenzelm@8616
|
605 |
(** Hindley-Milner polymorphism **)
|
wenzelm@8616
|
606 |
|
wenzelm@7925
|
607 |
(* warn_extra_tfrees *)
|
wenzelm@7925
|
608 |
|
wenzelm@8616
|
609 |
local
|
wenzelm@8616
|
610 |
|
wenzelm@8616
|
611 |
fun used_free (a, ts) =
|
wenzelm@8616
|
612 |
(case mapfilter (fn Free (x, _) => Some x | _ => None) ts of
|
wenzelm@8616
|
613 |
[] => None
|
wenzelm@8616
|
614 |
| xs => Some (a, xs));
|
wenzelm@8616
|
615 |
|
wenzelm@8616
|
616 |
fun warn_extra (names1: string list, tab1) (names2, tab2) =
|
wenzelm@8616
|
617 |
if names1 = names2 then ()
|
wenzelm@7925
|
618 |
else
|
wenzelm@8616
|
619 |
let
|
wenzelm@8616
|
620 |
val extra =
|
wenzelm@8616
|
621 |
Library.gen_rems Library.eq_fst (Symtab.dest tab2, Symtab.dest tab1)
|
wenzelm@8616
|
622 |
|> mapfilter used_free;
|
wenzelm@8616
|
623 |
val tfrees = map #1 extra;
|
wenzelm@8616
|
624 |
val frees = Library.sort_strings (Library.distinct (flat (map #2 extra)));
|
wenzelm@8616
|
625 |
in
|
wenzelm@8616
|
626 |
if null extra then ()
|
wenzelm@8616
|
627 |
else warning ("Danger! Just introduced free type variable(s): " ^ commas tfrees ^ " in " ^
|
wenzelm@8616
|
628 |
space_implode " or " frees)
|
wenzelm@8616
|
629 |
end;
|
wenzelm@8616
|
630 |
|
wenzelm@8616
|
631 |
in
|
wenzelm@7925
|
632 |
|
wenzelm@7925
|
633 |
fun warn_extra_tfrees (ctxt1 as Context {defs = (_, _, used1), ...})
|
wenzelm@7925
|
634 |
(ctxt2 as Context {defs = (_, _, used2), ...}) = (warn_extra used1 used2; ctxt2);
|
wenzelm@7925
|
635 |
|
wenzelm@8616
|
636 |
end;
|
wenzelm@8616
|
637 |
|
wenzelm@8616
|
638 |
|
wenzelm@8616
|
639 |
(* generalize type variables *)
|
wenzelm@8616
|
640 |
|
wenzelm@8616
|
641 |
fun gen_tfrees inner opt_outer =
|
wenzelm@8616
|
642 |
let
|
wenzelm@8616
|
643 |
val inner_used = used_table inner;
|
wenzelm@8616
|
644 |
val inner_fixes = fixed_names inner;
|
wenzelm@8616
|
645 |
val (outer_used, outer_fixes) =
|
wenzelm@8616
|
646 |
(case opt_outer of
|
wenzelm@8616
|
647 |
None => (Symtab.empty, [])
|
wenzelm@8616
|
648 |
| Some ctxt => (used_table ctxt, fixed_names ctxt));
|
wenzelm@8616
|
649 |
|
wenzelm@8616
|
650 |
val extra_fixes = inner_fixes \\ outer_fixes;
|
wenzelm@8616
|
651 |
fun still_fixed (Free (x, _)) = not (x mem_string extra_fixes)
|
wenzelm@8616
|
652 |
| still_fixed _ = false;
|
wenzelm@8616
|
653 |
|
wenzelm@8616
|
654 |
fun add (gen, (a, xs)) =
|
wenzelm@8616
|
655 |
if is_some (Symtab.lookup (outer_used, a)) orelse exists still_fixed xs
|
wenzelm@8616
|
656 |
then gen else a :: gen;
|
wenzelm@8616
|
657 |
in Symtab.foldl add ([], inner_used) end;
|
wenzelm@8616
|
658 |
|
wenzelm@8616
|
659 |
fun generalizeT inner outer =
|
wenzelm@8616
|
660 |
let
|
wenzelm@8616
|
661 |
val tfrees = gen_tfrees inner (Some outer);
|
wenzelm@8616
|
662 |
fun gen (x, S) = if x mem_string tfrees then TVar ((x, 0), S) else TFree (x, S);
|
wenzelm@8616
|
663 |
in Term.map_type_tfree gen end;
|
wenzelm@8616
|
664 |
|
wenzelm@8616
|
665 |
val generalize = Term.map_term_types oo generalizeT;
|
wenzelm@8616
|
666 |
|
wenzelm@8616
|
667 |
|
wenzelm@9553
|
668 |
|
wenzelm@9553
|
669 |
(** export theorems **)
|
wenzelm@8616
|
670 |
|
wenzelm@8616
|
671 |
fun get_free x (None, t as Free (y, _)) = if x = y then Some t else None
|
wenzelm@8616
|
672 |
| get_free _ (opt, _) = opt;
|
wenzelm@8616
|
673 |
|
wenzelm@8616
|
674 |
fun find_free t x = foldl_aterms (get_free x) (None, t);
|
wenzelm@8616
|
675 |
|
wenzelm@9553
|
676 |
val norm_hhf =
|
wenzelm@9553
|
677 |
Drule.forall_elim_vars_safe o Tactic.rewrite_rule [Drule.norm_hhf_eq];
|
wenzelm@9553
|
678 |
|
wenzelm@8616
|
679 |
|
wenzelm@8616
|
680 |
local
|
wenzelm@8616
|
681 |
|
wenzelm@9470
|
682 |
fun export tfrees fixes goal_asms thm =
|
wenzelm@9470
|
683 |
thm
|
wenzelm@9553
|
684 |
|> norm_hhf
|
wenzelm@9470
|
685 |
|> Seq.EVERY (rev (map op |> goal_asms))
|
wenzelm@9470
|
686 |
|> Seq.map (fn rule =>
|
wenzelm@9470
|
687 |
let
|
wenzelm@9470
|
688 |
val {sign, prop, maxidx, ...} = Thm.rep_thm rule;
|
wenzelm@9470
|
689 |
val frees = map (Thm.cterm_of sign) (mapfilter (find_free prop) fixes);
|
wenzelm@9470
|
690 |
in
|
wenzelm@9470
|
691 |
rule
|
wenzelm@9470
|
692 |
|> Drule.forall_intr_list frees
|
wenzelm@9553
|
693 |
|> norm_hhf
|
wenzelm@9470
|
694 |
|> Drule.tvars_intr_list tfrees
|
wenzelm@9470
|
695 |
end);
|
wenzelm@8616
|
696 |
|
wenzelm@8616
|
697 |
fun diff_context inner None = (gen_tfrees inner None, fixed_names inner, assumptions inner)
|
wenzelm@8616
|
698 |
| diff_context inner (Some outer) =
|
wenzelm@8616
|
699 |
(gen_tfrees inner (Some outer),
|
wenzelm@8616
|
700 |
fixed_names inner \\ fixed_names outer,
|
wenzelm@8616
|
701 |
Library.drop (length (assumptions outer), assumptions inner));
|
wenzelm@8616
|
702 |
|
wenzelm@8616
|
703 |
in
|
wenzelm@8616
|
704 |
|
wenzelm@9470
|
705 |
fun export_wrt is_goal inner opt_outer =
|
wenzelm@8616
|
706 |
let
|
wenzelm@8616
|
707 |
val (tfrees, fixes, asms) = diff_context inner opt_outer;
|
wenzelm@9470
|
708 |
val goal_asms = map (fn (cprops, (exp, _)) => (map Drule.mk_cgoal cprops, exp)) asms;
|
wenzelm@9470
|
709 |
val tacs = flat (map (fn (cprops, (_, f)) => f is_goal (length cprops)) asms);
|
wenzelm@9470
|
710 |
in (export tfrees fixes goal_asms, tacs) end;
|
wenzelm@8616
|
711 |
|
wenzelm@8616
|
712 |
end;
|
wenzelm@8616
|
713 |
|
wenzelm@7925
|
714 |
|
wenzelm@5819
|
715 |
|
wenzelm@5819
|
716 |
(** bindings **)
|
wenzelm@5819
|
717 |
|
wenzelm@5819
|
718 |
(* update_binds *)
|
wenzelm@5819
|
719 |
|
wenzelm@7606
|
720 |
fun del_bind (ctxt, xi) =
|
wenzelm@7606
|
721 |
ctxt
|
wenzelm@8373
|
722 |
|> map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8373
|
723 |
(thy, data, asms, Vartab.update ((xi, None), binds), thms, cases, defs));
|
wenzelm@7606
|
724 |
|
wenzelm@8616
|
725 |
fun upd_bind (ctxt, ((x, i), t)) =
|
wenzelm@8616
|
726 |
let
|
wenzelm@8616
|
727 |
val T = Term.fastype_of t;
|
wenzelm@8616
|
728 |
val t' =
|
wenzelm@8616
|
729 |
if null (Term.term_tvars t \\ Term.typ_tvars T) then t
|
wenzelm@8637
|
730 |
else Var ((x ^ "_has_extra_type_vars_on_rhs", i), T);
|
wenzelm@8616
|
731 |
in
|
wenzelm@5819
|
732 |
ctxt
|
wenzelm@8616
|
733 |
|> declare_term t'
|
wenzelm@8373
|
734 |
|> map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8616
|
735 |
(thy, data, asms, Vartab.update (((x, i), Some (t', T)), binds), thms, cases, defs))
|
wenzelm@5819
|
736 |
end;
|
wenzelm@5819
|
737 |
|
wenzelm@7606
|
738 |
fun del_upd_bind (ctxt, (xi, None)) = del_bind (ctxt, xi)
|
wenzelm@7606
|
739 |
| del_upd_bind (ctxt, (xi, Some t)) = upd_bind (ctxt, (xi, t));
|
wenzelm@7606
|
740 |
|
wenzelm@5819
|
741 |
fun update_binds bs ctxt = foldl upd_bind (ctxt, bs);
|
wenzelm@7606
|
742 |
fun delete_update_binds bs ctxt = foldl del_upd_bind (ctxt, bs);
|
wenzelm@7606
|
743 |
|
wenzelm@5819
|
744 |
|
wenzelm@8096
|
745 |
(* simult_matches *)
|
wenzelm@8096
|
746 |
|
wenzelm@8616
|
747 |
fun simult_matches ctxt [] = []
|
wenzelm@8616
|
748 |
| simult_matches ctxt pairs =
|
wenzelm@8096
|
749 |
let
|
wenzelm@8096
|
750 |
val maxidx = foldl (fn (i, (t1, t2)) =>
|
wenzelm@8096
|
751 |
Int.max (i, Int.max (Term.maxidx_of_term t1, Term.maxidx_of_term t2))) (~1, pairs);
|
wenzelm@8096
|
752 |
val envs = Unify.smash_unifiers (sign_of ctxt, Envir.empty maxidx, pairs);
|
wenzelm@8096
|
753 |
val env =
|
wenzelm@8096
|
754 |
(case Seq.pull envs of
|
wenzelm@8096
|
755 |
None => raise CONTEXT ("Pattern match failed!", ctxt) (* FIXME improve msg (!?) *)
|
wenzelm@8096
|
756 |
| Some (env, _) => env);
|
wenzelm@8616
|
757 |
val binds =
|
wenzelm@8616
|
758 |
(*Note: Envir.norm_term ensures proper type instantiation*)
|
wenzelm@8616
|
759 |
map (apsnd (Envir.norm_term env)) (Envir.alist_of env);
|
wenzelm@8616
|
760 |
in binds end;
|
wenzelm@8096
|
761 |
|
wenzelm@8096
|
762 |
|
wenzelm@8096
|
763 |
(* add_binds(_i) *)
|
wenzelm@5819
|
764 |
|
wenzelm@7925
|
765 |
local
|
wenzelm@7925
|
766 |
|
wenzelm@5819
|
767 |
fun gen_bind prep (ctxt, (xi as (x, _), raw_t)) =
|
wenzelm@7606
|
768 |
ctxt |> delete_update_binds [(xi, apsome (prep ctxt) raw_t)];
|
wenzelm@5819
|
769 |
|
wenzelm@8616
|
770 |
fun gen_binds prep binds ctxt = foldl (gen_bind prep) (ctxt, binds);
|
wenzelm@7925
|
771 |
|
wenzelm@7925
|
772 |
in
|
wenzelm@5819
|
773 |
|
wenzelm@5819
|
774 |
val add_binds = gen_binds read_term;
|
wenzelm@5819
|
775 |
val add_binds_i = gen_binds cert_term;
|
wenzelm@8616
|
776 |
|
wenzelm@7925
|
777 |
val auto_bind_goal = add_binds_i o AutoBind.goal;
|
wenzelm@7925
|
778 |
val auto_bind_facts = add_binds_i oo AutoBind.facts;
|
wenzelm@7925
|
779 |
|
wenzelm@7925
|
780 |
end;
|
wenzelm@5819
|
781 |
|
wenzelm@5819
|
782 |
|
wenzelm@8096
|
783 |
(* match_bind(_i) *)
|
wenzelm@5819
|
784 |
|
wenzelm@8096
|
785 |
local
|
wenzelm@8096
|
786 |
|
wenzelm@8616
|
787 |
fun prep_bind (prep, prep_pats) (ctxt, (raw_pats, raw_t)) =
|
wenzelm@5819
|
788 |
let
|
wenzelm@5935
|
789 |
val t = prep ctxt raw_t;
|
wenzelm@8096
|
790 |
val ctxt' = declare_term t ctxt;
|
wenzelm@8096
|
791 |
val pats = prep_pats (fastype_of t) ctxt' raw_pats;
|
wenzelm@8616
|
792 |
val binds = simult_matches ctxt' (map (rpair t) pats);
|
wenzelm@8616
|
793 |
in (ctxt', binds) end;
|
wenzelm@5819
|
794 |
|
wenzelm@8616
|
795 |
fun gen_binds prepp gen raw_binds ctxt =
|
wenzelm@8616
|
796 |
let
|
wenzelm@8616
|
797 |
val (ctxt', binds) = apsnd flat (foldl_map (prep_bind prepp) (ctxt, raw_binds));
|
wenzelm@8616
|
798 |
val binds' =
|
wenzelm@8616
|
799 |
if gen then map (apsnd (generalize ctxt' ctxt)) binds
|
wenzelm@8616
|
800 |
else binds;
|
wenzelm@8616
|
801 |
val binds'' = map (apsnd Some) binds';
|
wenzelm@8616
|
802 |
in
|
wenzelm@8616
|
803 |
warn_extra_tfrees ctxt
|
wenzelm@8616
|
804 |
(if gen then ctxt (*sic!*) |> declare_terms (map #2 binds') |> add_binds_i binds''
|
wenzelm@8616
|
805 |
else ctxt' |> add_binds_i binds'')
|
wenzelm@8616
|
806 |
end;
|
wenzelm@7670
|
807 |
|
wenzelm@8096
|
808 |
in
|
wenzelm@5819
|
809 |
|
wenzelm@8096
|
810 |
val match_bind = gen_binds (read_term, read_term_pats);
|
wenzelm@8096
|
811 |
val match_bind_i = gen_binds (cert_term, cert_term_pats);
|
wenzelm@5935
|
812 |
|
wenzelm@8096
|
813 |
end;
|
wenzelm@5935
|
814 |
|
wenzelm@5935
|
815 |
|
wenzelm@8096
|
816 |
(* proposition patterns *)
|
wenzelm@8096
|
817 |
|
wenzelm@8096
|
818 |
fun prep_propp prep_prop prep_pats (ctxt, (raw_prop, (raw_pats1, raw_pats2))) =
|
wenzelm@6931
|
819 |
let
|
wenzelm@8096
|
820 |
val prop = prep_prop ctxt raw_prop;
|
wenzelm@8096
|
821 |
val ctxt' = declare_term prop ctxt;
|
wenzelm@5935
|
822 |
|
wenzelm@8096
|
823 |
val pats = prep_pats ctxt' (raw_pats1 @ raw_pats2); (*simultaneous type inference!*)
|
wenzelm@8096
|
824 |
val len1 = length raw_pats1;
|
wenzelm@8096
|
825 |
in (ctxt', (prop, (take (len1, pats), drop (len1, pats)))) end;
|
wenzelm@8096
|
826 |
|
wenzelm@8096
|
827 |
val read_propp = prep_propp read_prop read_prop_pats;
|
wenzelm@8096
|
828 |
val cert_propp = prep_propp cert_prop cert_prop_pats;
|
wenzelm@8096
|
829 |
|
wenzelm@8096
|
830 |
|
wenzelm@8096
|
831 |
fun gen_bind_propp prepp (ctxt, propp) =
|
wenzelm@8096
|
832 |
let
|
wenzelm@8096
|
833 |
val (ctxt', (prop, (pats1, pats2))) = prepp (ctxt, propp);
|
wenzelm@8616
|
834 |
val pairs =
|
wenzelm@8616
|
835 |
map (rpair prop) pats1 @
|
wenzelm@8616
|
836 |
map (rpair (Logic.strip_imp_concl prop)) pats2; (* FIXME handle params!? *)
|
wenzelm@8616
|
837 |
val binds = simult_matches ctxt' pairs;
|
wenzelm@8616
|
838 |
|
wenzelm@8616
|
839 |
(*note: context evaluated now, binds added later (lazy)*)
|
wenzelm@8616
|
840 |
val gen = generalize ctxt' ctxt;
|
wenzelm@8616
|
841 |
fun gen_binds ct = ct |> add_binds_i (map (apsnd (Some o gen)) binds);
|
wenzelm@8616
|
842 |
in (ctxt' |> add_binds_i (map (apsnd Some) binds), (prop, gen_binds)) end;
|
wenzelm@8096
|
843 |
|
wenzelm@8096
|
844 |
val bind_propp = gen_bind_propp read_propp;
|
wenzelm@8096
|
845 |
val bind_propp_i = gen_bind_propp cert_propp;
|
wenzelm@6789
|
846 |
|
wenzelm@6789
|
847 |
|
wenzelm@5819
|
848 |
|
wenzelm@5819
|
849 |
(** theorems **)
|
wenzelm@5819
|
850 |
|
wenzelm@6091
|
851 |
(* get_thm(s) *)
|
wenzelm@5819
|
852 |
|
wenzelm@9566
|
853 |
(*beware of proper order of evaluation!*)
|
wenzelm@5819
|
854 |
|
wenzelm@9566
|
855 |
fun retrieve_thms f g (ctxt as Context {thy, thms, ...}) =
|
wenzelm@9566
|
856 |
let
|
wenzelm@9566
|
857 |
val sg_ref = Sign.self_ref (Theory.sign_of thy);
|
wenzelm@9566
|
858 |
val get_from_thy = f thy;
|
wenzelm@9566
|
859 |
in
|
wenzelm@9566
|
860 |
fn name =>
|
wenzelm@9566
|
861 |
(case Symtab.lookup (thms, name) of
|
wenzelm@9566
|
862 |
Some (Some ths) => map (Thm.transfer_sg (Sign.deref sg_ref)) ths
|
wenzelm@9566
|
863 |
| _ => get_from_thy name) |> g name
|
wenzelm@9566
|
864 |
end;
|
wenzelm@5819
|
865 |
|
wenzelm@9566
|
866 |
val get_thm = retrieve_thms PureThy.get_thms PureThy.single_thm;
|
wenzelm@9566
|
867 |
val get_thm_closure = retrieve_thms PureThy.get_thms_closure PureThy.single_thm;
|
wenzelm@9566
|
868 |
val get_thms = retrieve_thms PureThy.get_thms (K I);
|
wenzelm@9566
|
869 |
val get_thms_closure = retrieve_thms PureThy.get_thms_closure (K I);
|
wenzelm@5819
|
870 |
|
wenzelm@5819
|
871 |
|
wenzelm@6091
|
872 |
(* put_thm(s) *)
|
wenzelm@5819
|
873 |
|
wenzelm@7479
|
874 |
fun put_thms ("", _) = I
|
wenzelm@7479
|
875 |
| put_thms (name, ths) = map_context
|
wenzelm@8373
|
876 |
(fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8373
|
877 |
(thy, data, asms, binds, Symtab.update ((name, Some ths), thms), cases, defs));
|
wenzelm@5819
|
878 |
|
wenzelm@6091
|
879 |
fun put_thm (name, th) = put_thms (name, [th]);
|
wenzelm@5819
|
880 |
|
wenzelm@6091
|
881 |
fun put_thmss [] ctxt = ctxt
|
wenzelm@6091
|
882 |
| put_thmss (th :: ths) ctxt = ctxt |> put_thms th |> put_thmss ths;
|
wenzelm@5819
|
883 |
|
wenzelm@5819
|
884 |
|
wenzelm@7606
|
885 |
(* reset_thms *)
|
wenzelm@7606
|
886 |
|
wenzelm@8373
|
887 |
fun reset_thms name = map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8373
|
888 |
(thy, data, asms, binds, Symtab.update ((name, None), thms), cases, defs));
|
wenzelm@7606
|
889 |
|
wenzelm@7606
|
890 |
|
wenzelm@6091
|
891 |
(* have_thmss *)
|
wenzelm@5819
|
892 |
|
wenzelm@9196
|
893 |
fun have_thss (ctxt, ((name, more_attrs), ths_attrs)) =
|
wenzelm@5819
|
894 |
let
|
wenzelm@5819
|
895 |
fun app ((ct, ths), (th, attrs)) =
|
wenzelm@6091
|
896 |
let val (ct', th') = Thm.applys_attributes ((ct, th), attrs @ more_attrs)
|
wenzelm@5819
|
897 |
in (ct', th' :: ths) end
|
wenzelm@5819
|
898 |
val (ctxt', rev_thms) = foldl app ((ctxt, []), ths_attrs);
|
wenzelm@9196
|
899 |
val thms = flat (rev rev_thms);
|
wenzelm@6091
|
900 |
in (ctxt' |> put_thms (name, thms), (name, thms)) end;
|
wenzelm@5819
|
901 |
|
wenzelm@9196
|
902 |
fun have_thmss args ctxt = foldl_map have_thss (ctxt, args);
|
wenzelm@9196
|
903 |
|
wenzelm@5819
|
904 |
|
wenzelm@5819
|
905 |
|
wenzelm@5819
|
906 |
(** assumptions **)
|
wenzelm@5819
|
907 |
|
wenzelm@5819
|
908 |
(* assume *)
|
wenzelm@5819
|
909 |
|
wenzelm@7270
|
910 |
local
|
wenzelm@6797
|
911 |
|
wenzelm@9470
|
912 |
fun gen_assm prepp (ctxt, (name, attrs, raw_prop_pats)) =
|
wenzelm@5819
|
913 |
let
|
wenzelm@8096
|
914 |
val (ctxt', props) = foldl_map prepp (ctxt, raw_prop_pats);
|
wenzelm@5819
|
915 |
|
wenzelm@7575
|
916 |
val cprops = map (Thm.cterm_of (sign_of ctxt')) props;
|
wenzelm@9553
|
917 |
val asms = map (norm_hhf o Drule.assume_goal) cprops;
|
wenzelm@5919
|
918 |
|
wenzelm@5919
|
919 |
val ths = map (fn th => ([th], [])) asms;
|
wenzelm@9196
|
920 |
val (ctxt'', [(_, thms)]) =
|
wenzelm@5819
|
921 |
ctxt'
|
wenzelm@6797
|
922 |
|> auto_bind_facts name props
|
wenzelm@9196
|
923 |
|> have_thmss [((name, attrs @ [Drule.tag_assumption]), ths)];
|
wenzelm@9470
|
924 |
in (ctxt'', (cprops, (name, asms), (name, thms))) end;
|
wenzelm@5819
|
925 |
|
wenzelm@9470
|
926 |
fun gen_assms prepp exp args ctxt =
|
wenzelm@9470
|
927 |
let
|
wenzelm@9470
|
928 |
val (ctxt', results) = foldl_map (gen_assm prepp) (ctxt, args);
|
wenzelm@9470
|
929 |
val cprops = flat (map #1 results);
|
wenzelm@9470
|
930 |
val asmss = map #2 results;
|
wenzelm@9470
|
931 |
val thmss = map #3 results;
|
wenzelm@9470
|
932 |
val ctxt'' =
|
wenzelm@9470
|
933 |
ctxt'
|
wenzelm@8373
|
934 |
|> map_context (fn (thy, data, ((asms_ct, asms_th), fixes), binds, thms, cases, defs) =>
|
wenzelm@9470
|
935 |
(thy, data, ((asms_ct @ [(cprops, exp)], asms_th @ asmss), fixes), binds, thms,
|
wenzelm@9470
|
936 |
cases, defs));
|
wenzelm@9470
|
937 |
in (warn_extra_tfrees ctxt ctxt'', (thmss, prems_of ctxt'')) end;
|
wenzelm@7270
|
938 |
|
wenzelm@7270
|
939 |
in
|
wenzelm@7270
|
940 |
|
wenzelm@8616
|
941 |
val assume = gen_assms (apsnd #1 o bind_propp);
|
wenzelm@8616
|
942 |
val assume_i = gen_assms (apsnd #1 o bind_propp_i);
|
wenzelm@7270
|
943 |
|
wenzelm@7270
|
944 |
end;
|
wenzelm@5819
|
945 |
|
wenzelm@5819
|
946 |
|
wenzelm@8096
|
947 |
(* variables *)
|
wenzelm@8096
|
948 |
|
wenzelm@9291
|
949 |
fun prep_vars prep_typ (ctxt, (xs, raw_T)) =
|
wenzelm@8096
|
950 |
let
|
wenzelm@9325
|
951 |
val _ = (case filter (not o Syntax.is_identifier) (map (no_skolem false ctxt) xs) of
|
wenzelm@8096
|
952 |
[] => () | bads => raise CONTEXT ("Bad variable name(s): " ^ commas_quote bads, ctxt));
|
wenzelm@8096
|
953 |
|
wenzelm@8096
|
954 |
val opt_T = apsome (prep_typ ctxt) raw_T;
|
wenzelm@8096
|
955 |
val T = if_none opt_T TypeInfer.logicT;
|
wenzelm@8096
|
956 |
val ctxt' = ctxt |> declare_terms (map (fn x => Free (x, T)) xs);
|
wenzelm@8096
|
957 |
in (ctxt', (xs, opt_T)) end;
|
wenzelm@8096
|
958 |
|
wenzelm@9291
|
959 |
val read_vars = prep_vars read_typ;
|
wenzelm@9291
|
960 |
val cert_vars = prep_vars cert_typ;
|
wenzelm@8096
|
961 |
|
wenzelm@8096
|
962 |
|
wenzelm@5819
|
963 |
(* fix *)
|
wenzelm@5819
|
964 |
|
wenzelm@8096
|
965 |
local
|
wenzelm@5819
|
966 |
|
wenzelm@8096
|
967 |
fun add_vars xs (fixes, names) =
|
wenzelm@8096
|
968 |
let
|
wenzelm@8096
|
969 |
val xs' = variantlist (xs, names);
|
wenzelm@8096
|
970 |
val fixes' = (xs ~~ map Syntax.skolem xs') @ fixes;
|
wenzelm@8096
|
971 |
val names' = xs' @ names;
|
wenzelm@8096
|
972 |
in (fixes', names') end;
|
wenzelm@7679
|
973 |
|
wenzelm@8373
|
974 |
fun map_vars f = map_context (fn (thy, data, (assumes, vars), binds, thms, cases, defs) =>
|
wenzelm@8373
|
975 |
(thy, data, (assumes, f vars), binds, thms, cases, defs));
|
wenzelm@5819
|
976 |
|
wenzelm@8096
|
977 |
fun gen_fix prep raw_vars ctxt =
|
wenzelm@8096
|
978 |
let
|
wenzelm@8096
|
979 |
val (ctxt', varss) = foldl_map prep (ctxt, raw_vars);
|
wenzelm@8096
|
980 |
val xs = flat (map fst varss);
|
wenzelm@8096
|
981 |
in
|
wenzelm@8096
|
982 |
(case Library.duplicates xs of
|
wenzelm@8096
|
983 |
[] => ()
|
wenzelm@8096
|
984 |
| dups => raise CONTEXT ("Duplicate variable name(s): " ^ commas_quote dups, ctxt));
|
wenzelm@8096
|
985 |
ctxt' |> map_vars (add_vars xs)
|
wenzelm@8096
|
986 |
end;
|
wenzelm@8096
|
987 |
|
wenzelm@8096
|
988 |
in
|
wenzelm@8096
|
989 |
|
wenzelm@8096
|
990 |
val fix = gen_fix read_vars;
|
wenzelm@8096
|
991 |
val fix_i = gen_fix cert_vars;
|
wenzelm@8096
|
992 |
|
wenzelm@8096
|
993 |
end;
|
wenzelm@5819
|
994 |
|
wenzelm@6895
|
995 |
|
wenzelm@9291
|
996 |
(*Note: improper use may result in variable capture / dynamic scoping!*)
|
wenzelm@9291
|
997 |
fun bind_skolem ctxt xs =
|
wenzelm@9291
|
998 |
let
|
wenzelm@9291
|
999 |
val ctxt' = ctxt |> fix_i [(xs, None)];
|
wenzelm@9291
|
1000 |
fun bind (t as Free (x, T)) =
|
wenzelm@9291
|
1001 |
if x mem_string xs then
|
wenzelm@9291
|
1002 |
(case get_skolem ctxt' x of Some x' => Free (x', T) | None => t)
|
wenzelm@9291
|
1003 |
else t
|
wenzelm@9291
|
1004 |
| bind (t $ u) = bind t $ bind u
|
wenzelm@9291
|
1005 |
| bind (Abs (x, T, t)) = Abs (x, T, bind t)
|
wenzelm@9291
|
1006 |
| bind a = a;
|
wenzelm@9291
|
1007 |
in bind end;
|
wenzelm@9291
|
1008 |
|
wenzelm@9291
|
1009 |
|
wenzelm@5819
|
1010 |
|
wenzelm@8373
|
1011 |
(** cases **)
|
wenzelm@8373
|
1012 |
|
wenzelm@8403
|
1013 |
fun check_case ctxt name (xs, ts) =
|
wenzelm@8403
|
1014 |
if null (foldr Term.add_typ_tvars (map snd xs, [])) andalso
|
wenzelm@8403
|
1015 |
null (foldr Term.add_term_vars (ts, [])) then ()
|
wenzelm@8403
|
1016 |
else raise CONTEXT ("Illegal schematic variable(s) in case " ^ quote name, ctxt);
|
wenzelm@8403
|
1017 |
|
wenzelm@8373
|
1018 |
fun get_case (ctxt as Context {cases, ...}) name =
|
wenzelm@8426
|
1019 |
(case assoc (cases, name) of
|
wenzelm@8373
|
1020 |
None => raise CONTEXT ("Unknown case: " ^ quote name, ctxt)
|
wenzelm@8403
|
1021 |
| Some c => (check_case ctxt name c; c));
|
wenzelm@8373
|
1022 |
|
wenzelm@8384
|
1023 |
|
wenzelm@8373
|
1024 |
fun add_cases xs = map_context (fn (thy, data, asms, binds, thms, cases, defs) =>
|
wenzelm@8426
|
1025 |
(thy, data, asms, binds, thms, rev (filter_out (equal "" o #1) xs) @ cases, defs));
|
wenzelm@8373
|
1026 |
|
wenzelm@8373
|
1027 |
|
wenzelm@8373
|
1028 |
|
wenzelm@5819
|
1029 |
(** theory setup **)
|
wenzelm@5819
|
1030 |
|
wenzelm@5819
|
1031 |
val setup = [ProofDataData.init];
|
wenzelm@5819
|
1032 |
|
wenzelm@5819
|
1033 |
|
wenzelm@5819
|
1034 |
end;
|