src/Pure/Isar/proof_context.ML
author wenzelm
Thu Apr 27 15:06:35 2006 +0200 (2006-04-27 ago)
changeset 19482 9f11af8f7ef9
parent 19422 bba26da0f227
child 19543 e1b81ecd4580
permissions -rw-r--r--
tuned basic list operators (flat, maps, map_filter);
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(*  Title:      Pure/Isar/proof_context.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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The key concept of Isar proof contexts: elevates primitive local
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reasoning Gamma |- phi to a structured concept, with generic context
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elements, polymorphic abbreviations, and extra-logical data.
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*)
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signature PROOF_CONTEXT =
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sig
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  type context (*= Context.proof*)
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  type export
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  val theory_of: context -> theory
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  val init: theory -> context
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  val full_name: context -> bstring -> string
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  val set_body: bool -> context -> context
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  val restore_body: context -> context -> context
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  val assms_of: context -> term list
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  val prems_of: context -> thm list
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  val fact_index_of: context -> FactIndex.T
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  val is_fixed: context -> string -> bool
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  val is_known: context -> string -> bool
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  val transfer: theory -> context -> context
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  val map_theory: (theory -> theory) -> context -> context
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  val pretty_term: context -> term -> Pretty.T
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  val pretty_typ: context -> typ -> Pretty.T
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  val pretty_sort: context -> sort -> Pretty.T
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  val pretty_classrel: context -> class list -> Pretty.T
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  val pretty_arity: context -> arity -> Pretty.T
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  val pp: context -> Pretty.pp
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  val pretty_thm: context -> thm -> Pretty.T
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  val pretty_thms: context -> thm list -> Pretty.T
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  val pretty_fact: context -> string * thm list -> Pretty.T
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  val pretty_proof: context -> Proofterm.proof -> Pretty.T
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  val pretty_proof_of: context -> bool -> thm -> Pretty.T
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  val string_of_typ: context -> typ -> string
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  val string_of_term: context -> term -> string
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  val string_of_thm: context -> thm -> string
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  val used_types: context -> string list
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  val default_type: context -> string -> typ option
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  val read_typ: context -> string -> typ
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  val read_typ_syntax: context -> string -> typ
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  val read_typ_abbrev: context -> string -> typ
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  val cert_typ: context -> typ -> typ
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  val cert_typ_syntax: context -> typ -> typ
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  val cert_typ_abbrev: context -> typ -> typ
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  val get_skolem: context -> string -> string
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  val revert_skolem: context -> string -> string
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  val extern_skolem: context -> term -> term
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  val read_termTs: context -> (string -> bool) -> (indexname -> typ option)
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    -> (indexname -> sort option) -> string list -> (string * typ) list
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    -> term list * (indexname * typ) list
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  val read_termTs_schematic: context -> (string -> bool) -> (indexname -> typ option)
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    -> (indexname -> sort option) -> string list -> (string * typ) list
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    -> term list * (indexname * typ) list
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  val read_term_legacy: context -> string -> term
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  val read_term: context -> string -> term
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  val read_prop: context -> string -> term
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  val read_prop_schematic: context -> string -> term
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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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  val cert_term_pats: typ -> context -> term list -> term list
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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 infer_type: context -> string -> typ
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  val inferred_param: string -> context -> (string * typ) * context
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  val inferred_fixes: context -> (string * typ) list * context
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  val read_tyname: context -> string -> typ
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  val read_const: context -> string -> term
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  val rename_frees: context -> term list -> (string * 'a) list -> (string * 'a) list
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  val warn_extra_tfrees: context -> context -> context
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  val generalize: context -> context -> term list -> term list
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  val monomorphic: context -> term list -> term list
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  val polymorphic: context -> term list -> term list
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  val hidden_polymorphism: term -> typ -> (indexname * sort) list
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  val export_standard: context -> context -> thm -> thm
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  val exports: context -> context -> thm -> thm Seq.seq
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  val goal_exports: context -> context -> thm -> thm Seq.seq
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  val drop_schematic: indexname * term option -> indexname * term option
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  val add_binds: (indexname * string option) list -> context -> context
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  val add_binds_i: (indexname * term option) list -> context -> context
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  val auto_bind_goal: term list -> context -> context
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  val auto_bind_facts: term list -> context -> context
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  val match_bind: bool -> (string list * string) list -> context -> term list * context
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  val match_bind_i: bool -> (term list * term) list -> context -> term list * context
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  val read_propp: context * (string * (string list * string list)) list list
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    -> context * (term * (term list * term list)) list list
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  val cert_propp: context * (term * (term list * term list)) list list
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    -> context * (term * (term list * term list)) list list
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  val read_propp_schematic: context * (string * (string list * string list)) list list
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    -> context * (term * (term list * term list)) list list
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  val cert_propp_schematic: context * (term * (term list * term list)) list list
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    -> context * (term * (term list * term list)) list list
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  val bind_propp: context * (string * (string list * string list)) list list
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    -> context * (term list list * (context -> context))
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  val bind_propp_i: context * (term * (term list * term list)) list list
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    -> context * (term list list * (context -> context))
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  val bind_propp_schematic: context * (string * (string list * string list)) list list
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    -> context * (term list list * (context -> context))
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  val bind_propp_schematic_i: context * (term * (term list * term list)) list list
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    -> context * (term list list * (context -> context))
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  val fact_tac: thm list -> int -> tactic
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  val some_fact_tac: context -> int -> tactic
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  val get_thm: context -> thmref -> thm
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  val get_thm_closure: context -> thmref -> thm
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  val get_thms: context -> thmref -> thm list
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  val get_thms_closure: context -> thmref -> thm list
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  val valid_thms: context -> string * thm list -> bool
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  val lthms_containing: context -> FactIndex.spec -> (string * thm list) list
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  val extern_thm: context -> string -> xstring
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  val no_base_names: context -> context
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  val qualified_names: context -> context
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  val sticky_prefix: string -> context -> context
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  val restore_naming: context -> context -> context
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  val hide_thms: bool -> string list -> context -> context
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  val put_thms: bool -> string * thm list option -> context -> context
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  val put_thms_internal: string * thm list option -> context -> context
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  val note_thmss:
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    ((bstring * attribute list) * (thmref * attribute list) list) list ->
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      context -> (bstring * thm list) list * context
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  val note_thmss_i:
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    ((bstring * attribute list) * (thm list * attribute list) list) list ->
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      context -> (bstring * thm list) list * context
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  val read_vars: (string * string option * mixfix) list -> context ->
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    (string * typ option * mixfix) list * context
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  val cert_vars: (string * typ option * mixfix) list -> context ->
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    (string * typ option * mixfix) list * context
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  val read_vars_legacy: (string * string option * mixfix) list -> context ->
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    (string * typ option * mixfix) list * context
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  val cert_vars_legacy: (string * typ option * mixfix) list -> context ->
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    (string * typ option * mixfix) list * context
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  val add_fixes: (string * string option * mixfix) list -> context -> string list * context
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  val add_fixes_i: (string * typ option * mixfix) list -> context -> string list * context
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  val add_fixes_legacy: (string * typ option * mixfix) list -> context -> string list * context
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  val invent_fixes: string list -> context -> string list * context
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  val fix_frees: term -> context -> context
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  val auto_fixes: context * (term list list * 'a) -> context * (term list list * 'a)
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  val bind_fixes: string list -> context -> (term -> term) * context
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  val add_assms: export ->
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    ((string * attribute list) * (string * (string list * string list)) list) list ->
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    context -> (bstring * thm list) list * context
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  val add_assms_i: export ->
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    ((string * attribute list) * (term * (term list * term list)) list) list ->
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    context -> (bstring * thm list) list * context
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  val assume_export: export
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  val presume_export: export
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  val add_view: context -> cterm list -> context -> context
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  val export_view: cterm list -> context -> context -> thm -> thm
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  val add_cases: bool -> (string * RuleCases.T option) list -> context -> context
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  val apply_case: RuleCases.T -> context -> (string * term list) list * context
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  val get_case: context -> string -> string option list -> RuleCases.T
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  val expand_abbrevs: bool -> context -> context
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  val add_abbrevs: string * bool -> (bstring * string * mixfix) list -> context -> context
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  val add_abbrevs_i: string * bool -> (bstring * term * mixfix) list -> context -> context
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  val verbose: bool ref
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  val setmp_verbose: ('a -> 'b) -> 'a -> 'b
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  val print_syntax: context -> unit
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  val print_binds: context -> unit
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  val print_lthms: context -> unit
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  val print_cases: context -> unit
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  val prems_limit: int ref
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  val pretty_ctxt: context -> Pretty.T list
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  val pretty_context: context -> Pretty.T list
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  val debug: bool ref
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  val pprint_context: context -> pprint_args -> unit
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end;
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structure ProofContext: PROOF_CONTEXT =
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struct
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type context = Context.proof;
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val theory_of = Context.theory_of_proof;
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val tsig_of = Sign.tsig_of o theory_of;
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val init = Context.init_proof;
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(** Isar proof context information **)
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type export = bool -> cterm list -> thm -> thm Seq.seq;
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datatype ctxt =
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  Ctxt of
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   {naming: NameSpace.naming,                     (*local naming conventions*)
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    syntax: LocalSyntax.T,                        (*local syntax*)
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    consts: Consts.T * Consts.T,                  (*global/local consts*)
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    fixes: bool * (string * string) list,         (*fixes: !!x. _ with proof body flag*)
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    assms:
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      ((cterm list * export) list *               (*assumes and views: A ==> _*)
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        (string * thm list) list),                (*prems: A |- A*)
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    binds: (typ * term) Vartab.table,             (*term bindings*)
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    thms: thm list NameSpace.table * FactIndex.T, (*local thms*)
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    cases: (string * (RuleCases.T * bool)) list,  (*local contexts*)
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    defaults:
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      typ Vartab.table *                          (*type constraints*)
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      sort Vartab.table *                         (*default sorts*)
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      string list *                               (*used type variables*)
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      term list Symtab.table};                    (*type variable occurrences*)
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fun make_ctxt (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =
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  Ctxt {naming = naming, syntax = syntax, consts = consts, fixes = fixes, assms = assms,
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    binds = binds, thms = thms, cases = cases, defaults = defaults};
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val local_naming = NameSpace.default_naming |> NameSpace.add_path "local";
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structure ContextData = ProofDataFun
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(
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  val name = "Isar/context";
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  type T = ctxt;
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  fun init thy =
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    make_ctxt (local_naming, LocalSyntax.init thy,
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      (Sign.consts_of thy, Sign.consts_of thy), (false, []), ([], []),
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      Vartab.empty, (NameSpace.empty_table, FactIndex.empty), [],
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      (Vartab.empty, Vartab.empty, [], Symtab.empty));
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  fun print _ _ = ();
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);
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val _ = Context.add_setup ContextData.init;
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fun rep_context ctxt = ContextData.get ctxt |> (fn Ctxt args => args);
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fun map_context f =
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  ContextData.map (fn Ctxt {naming, syntax, consts, fixes, assms, binds, thms, cases, defaults} =>
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    make_ctxt (f (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults)));
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fun map_naming f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (f naming, syntax, consts, fixes, assms, binds, thms, cases, defaults));
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fun map_syntax f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, f syntax, consts, fixes, assms, binds, thms, cases, defaults));
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fun map_consts f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, f consts, fixes, assms, binds, thms, cases, defaults));
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fun map_fixes f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, f fixes, assms, binds, thms, cases, defaults));
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fun map_assms f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, fixes, f assms, binds, thms, cases, defaults));
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fun map_binds f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, fixes, assms, f binds, thms, cases, defaults));
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fun map_thms f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, fixes, assms, binds, f thms, cases, defaults));
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fun map_cases f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, fixes, assms, binds, thms, f cases, defaults));
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fun map_defaults f =
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  map_context (fn (naming, syntax, consts, fixes, assms, binds, thms, cases, defaults) =>
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    (naming, syntax, consts, fixes, assms, binds, thms, cases, f defaults));
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val naming_of = #naming o rep_context;
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val full_name = NameSpace.full o naming_of;
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val syntax_of = #syntax o rep_context;
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val syn_of = LocalSyntax.syn_of o syntax_of;
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val consts_of = #2 o #consts o rep_context;
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val is_body = #1 o #fixes o rep_context;
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fun set_body b = map_fixes (fn (_, fixes) => (b, fixes));
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fun restore_body ctxt = set_body (is_body ctxt);
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val fixes_of = #2 o #fixes o rep_context;
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val fixed_names_of = map #2 o fixes_of;
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val assumptions_of = #1 o #assms o rep_context;
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val assms_of = map Thm.term_of o maps #1 o assumptions_of;
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val prems_of = maps #2 o #2 o #assms o rep_context;
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val binds_of = #binds o rep_context;
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val thms_of = #thms o rep_context;
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val fact_index_of = #2 o thms_of;
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val cases_of = #cases o rep_context;
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val defaults_of = #defaults o rep_context;
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val type_occs_of = #4 o defaults_of;
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wenzelm@19019
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fun is_fixed ctxt x = exists (fn (_, y) => x = y) (fixes_of ctxt);
wenzelm@16894
   297
fun is_known ctxt x = Vartab.defined (#1 (defaults_of ctxt)) (x, ~1) orelse is_fixed ctxt x;
wenzelm@5819
   298
wenzelm@5819
   299
wenzelm@19001
   300
(* transfer *)
wenzelm@12093
   301
wenzelm@19001
   302
fun transfer_syntax thy =
wenzelm@19001
   303
  map_syntax (LocalSyntax.rebuild thy) #>
wenzelm@19033
   304
  map_consts (fn consts as (global_consts, local_consts) =>
wenzelm@19033
   305
    let val thy_consts = Sign.consts_of thy in
wenzelm@19033
   306
      if Consts.eq_consts (thy_consts, global_consts) then consts
wenzelm@19033
   307
      else (thy_consts, Consts.merge (thy_consts, local_consts))
wenzelm@19033
   308
    end);
wenzelm@17072
   309
wenzelm@19001
   310
fun transfer thy = Context.transfer_proof thy #> transfer_syntax thy;
wenzelm@17072
   311
wenzelm@19019
   312
fun map_theory f ctxt = transfer (f (theory_of ctxt)) ctxt;
wenzelm@19019
   313
wenzelm@12093
   314
wenzelm@12093
   315
wenzelm@14828
   316
(** pretty printing **)
wenzelm@14828
   317
wenzelm@19310
   318
local
wenzelm@19310
   319
wenzelm@19371
   320
fun rewrite_term thy rews t =
wenzelm@19371
   321
  if can Term.type_of t then Pattern.rewrite_term thy rews [] t
wenzelm@19371
   322
  else (warning "Printing ill-typed term -- cannot expand abbreviations"; t);
wenzelm@19371
   323
wenzelm@19001
   324
fun pretty_term' abbrevs ctxt t =
wenzelm@18971
   325
  let
wenzelm@19001
   326
    val thy = theory_of ctxt;
wenzelm@19001
   327
    val syntax = syntax_of ctxt;
wenzelm@18971
   328
    val consts = consts_of ctxt;
wenzelm@19001
   329
    val t' = t
wenzelm@19371
   330
      |> K abbrevs ? rewrite_term thy (Consts.abbrevs_of consts (! print_mode @ [""]))
wenzelm@19371
   331
      |> Sign.extern_term (Consts.extern_early consts) thy
wenzelm@19371
   332
      |> LocalSyntax.extern_term syntax;
wenzelm@19371
   333
  in
wenzelm@19371
   334
    Sign.pretty_term' (Context.Proof ctxt) (LocalSyntax.syn_of syntax) (Consts.extern consts) t'
wenzelm@19371
   335
  end;
wenzelm@18971
   336
wenzelm@19310
   337
in
wenzelm@19310
   338
wenzelm@19001
   339
val pretty_term = pretty_term' true;
wenzelm@19310
   340
val pretty_term_no_abbrevs = pretty_term' false;
wenzelm@19310
   341
wenzelm@19310
   342
end;
wenzelm@19310
   343
wenzelm@16458
   344
fun pretty_typ ctxt T = Sign.pretty_typ (theory_of ctxt) T;
wenzelm@16458
   345
fun pretty_sort ctxt S = Sign.pretty_sort (theory_of ctxt) S;
wenzelm@16458
   346
fun pretty_classrel ctxt cs = Sign.pretty_classrel (theory_of ctxt) cs;
wenzelm@16458
   347
fun pretty_arity ctxt ar = Sign.pretty_arity (theory_of ctxt) ar;
wenzelm@14828
   348
wenzelm@14974
   349
fun pp ctxt = Pretty.pp (pretty_term ctxt, pretty_typ ctxt, pretty_sort ctxt,
wenzelm@14974
   350
  pretty_classrel ctxt, pretty_arity ctxt);
wenzelm@14828
   351
wenzelm@17451
   352
fun pretty_thm ctxt th =
wenzelm@17451
   353
  Display.pretty_thm_aux (pp ctxt) false true (assms_of ctxt) th;
wenzelm@14828
   354
wenzelm@14828
   355
fun pretty_thms ctxt [th] = pretty_thm ctxt th
wenzelm@14828
   356
  | pretty_thms ctxt ths = Pretty.blk (0, Pretty.fbreaks (map (pretty_thm ctxt) ths));
wenzelm@14828
   357
wenzelm@14828
   358
fun pretty_fact ctxt ("", ths) = pretty_thms ctxt ths
wenzelm@14828
   359
  | pretty_fact ctxt (a, [th]) =
wenzelm@14828
   360
      Pretty.block [Pretty.str (a ^ ":"), Pretty.brk 1, pretty_thm ctxt th]
wenzelm@14828
   361
  | pretty_fact ctxt (a, ths) =
wenzelm@14828
   362
      Pretty.block (Pretty.fbreaks (Pretty.str (a ^ ":") :: map (pretty_thm ctxt) ths));
wenzelm@14828
   363
wenzelm@17072
   364
fun pretty_proof ctxt prf =
wenzelm@19310
   365
  pretty_term_no_abbrevs (ctxt |> transfer_syntax (ProofSyntax.proof_syntax prf (theory_of ctxt)))
wenzelm@17072
   366
    (ProofSyntax.term_of_proof prf);
wenzelm@17072
   367
wenzelm@17072
   368
fun pretty_proof_of ctxt full th =
wenzelm@17072
   369
  pretty_proof ctxt (ProofSyntax.proof_of full th);
wenzelm@17072
   370
wenzelm@17860
   371
val string_of_typ = Pretty.string_of oo pretty_typ;
wenzelm@17860
   372
val string_of_term = Pretty.string_of oo pretty_term;
wenzelm@17860
   373
val string_of_thm = Pretty.string_of oo pretty_thm;
wenzelm@17860
   374
wenzelm@14828
   375
wenzelm@14828
   376
wenzelm@7663
   377
(** default sorts and types **)
wenzelm@7663
   378
wenzelm@17412
   379
val def_sort = Vartab.lookup o #2 o defaults_of;
wenzelm@7663
   380
wenzelm@16540
   381
fun def_type ctxt pattern xi =
wenzelm@18672
   382
  let val {binds, defaults = (types, _, _, _), ...} = rep_context ctxt in
wenzelm@17412
   383
    (case Vartab.lookup types xi of
wenzelm@16540
   384
      NONE =>
wenzelm@16540
   385
        if pattern then NONE
wenzelm@18953
   386
        else Vartab.lookup binds xi |> Option.map (TypeInfer.polymorphicT o #1)
wenzelm@16540
   387
    | some => some)
wenzelm@16540
   388
  end;
wenzelm@7663
   389
wenzelm@18672
   390
val used_types = #3 o defaults_of;
wenzelm@18672
   391
wenzelm@17412
   392
fun default_type ctxt x = Vartab.lookup (#1 (defaults_of ctxt)) (x, ~1);
wenzelm@12414
   393
wenzelm@7663
   394
wenzelm@5819
   395
wenzelm@5819
   396
(** prepare types **)
wenzelm@5819
   397
wenzelm@9504
   398
local
wenzelm@9504
   399
wenzelm@9504
   400
fun read_typ_aux read ctxt s =
wenzelm@18857
   401
  read (syn_of ctxt) (Context.Proof ctxt) (def_sort ctxt) s;
wenzelm@5819
   402
wenzelm@10554
   403
fun cert_typ_aux cert ctxt raw_T =
wenzelm@18678
   404
  cert (theory_of ctxt) raw_T handle TYPE (msg, _, _) => error msg;
wenzelm@9504
   405
wenzelm@9504
   406
in
wenzelm@9504
   407
wenzelm@16348
   408
val read_typ        = read_typ_aux Sign.read_typ';
wenzelm@16348
   409
val read_typ_syntax = read_typ_aux Sign.read_typ_syntax';
wenzelm@16348
   410
val read_typ_abbrev = read_typ_aux Sign.read_typ_abbrev';
wenzelm@16348
   411
val cert_typ        = cert_typ_aux Sign.certify_typ;
wenzelm@16348
   412
val cert_typ_syntax = cert_typ_aux Sign.certify_typ_syntax;
wenzelm@16348
   413
val cert_typ_abbrev = cert_typ_aux Sign.certify_typ_abbrev;
wenzelm@9504
   414
wenzelm@9504
   415
end;
wenzelm@9504
   416
wenzelm@5819
   417
wenzelm@7679
   418
(* internalize Skolem constants *)
wenzelm@7679
   419
wenzelm@17184
   420
val lookup_skolem = AList.lookup (op =) o fixes_of;
wenzelm@18187
   421
fun get_skolem ctxt x = the_default x (lookup_skolem ctxt x);
wenzelm@7679
   422
wenzelm@18678
   423
fun no_skolem internal x =
wenzelm@9291
   424
  if can Syntax.dest_skolem x then
wenzelm@18678
   425
    error ("Illegal reference to internal Skolem constant: " ^ quote x)
wenzelm@12504
   426
  else if not internal andalso can Syntax.dest_internal x then
wenzelm@18678
   427
    error ("Illegal reference to internal variable: " ^ quote x)
wenzelm@7679
   428
  else x;
wenzelm@7679
   429
wenzelm@14720
   430
fun intern_skolem ctxt internal =
wenzelm@7679
   431
  let
wenzelm@7679
   432
    fun intern (t as Free (x, T)) =
wenzelm@14720
   433
          if internal x then t
wenzelm@14720
   434
          else
wenzelm@18678
   435
            (case lookup_skolem ctxt (no_skolem false x) of
skalberg@15531
   436
              SOME x' => Free (x', T)
skalberg@15531
   437
            | NONE => t)
wenzelm@7679
   438
      | intern (t $ u) = intern t $ intern u
wenzelm@7679
   439
      | intern (Abs (x, T, t)) = Abs (x, T, intern t)
wenzelm@7679
   440
      | intern a = a;
wenzelm@7679
   441
  in intern end;
wenzelm@7679
   442
wenzelm@7679
   443
wenzelm@18187
   444
(* externalize Skolem constants -- approximation only! *)
wenzelm@18187
   445
wenzelm@18255
   446
fun rev_skolem ctxt =
wenzelm@18187
   447
  let val rev_fixes = map Library.swap (fixes_of ctxt)
wenzelm@18187
   448
  in AList.lookup (op =) rev_fixes end;
wenzelm@9133
   449
wenzelm@18255
   450
fun revert_skolem ctxt x =
wenzelm@18255
   451
  (case rev_skolem ctxt x of
wenzelm@18255
   452
    SOME x' => x'
wenzelm@18375
   453
  | NONE => perhaps (try Syntax.dest_skolem) x);
wenzelm@18255
   454
wenzelm@9133
   455
fun extern_skolem ctxt =
wenzelm@9133
   456
  let
wenzelm@18255
   457
    val revert = rev_skolem ctxt;
wenzelm@9133
   458
    fun extern (t as Free (x, T)) =
wenzelm@18187
   459
        (case revert x of
wenzelm@18187
   460
          SOME x' => Free (if lookup_skolem ctxt x' = SOME x then x' else NameSpace.hidden x', T)
wenzelm@18187
   461
        | NONE => t)
wenzelm@9133
   462
      | extern (t $ u) = extern t $ extern u
wenzelm@9133
   463
      | extern (Abs (x, T, t)) = Abs (x, T, extern t)
wenzelm@9133
   464
      | extern a = a;
wenzelm@9133
   465
  in extern end
wenzelm@9133
   466
wenzelm@8096
   467
wenzelm@18187
   468
wenzelm@5819
   469
(** prepare terms and propositions **)
wenzelm@5819
   470
wenzelm@5819
   471
(*
wenzelm@16501
   472
  (1) read / certify wrt. theory of context
wenzelm@5819
   473
  (2) intern Skolem constants
wenzelm@5819
   474
  (3) expand term bindings
wenzelm@5819
   475
*)
wenzelm@5819
   476
wenzelm@5819
   477
wenzelm@16501
   478
(* read wrt. theory *)     (*exception ERROR*)
wenzelm@5819
   479
wenzelm@18857
   480
fun read_def_termTs freeze pp syn ctxt (types, sorts, used) sTs =
wenzelm@18971
   481
  Sign.read_def_terms' pp (Sign.is_logtype (theory_of ctxt)) syn (consts_of ctxt)
wenzelm@18857
   482
    (Context.Proof ctxt) (types, sorts) used freeze sTs;
wenzelm@5874
   483
wenzelm@18857
   484
fun read_def_termT freeze pp syn ctxt defaults sT =
wenzelm@18857
   485
  apfst hd (read_def_termTs freeze pp syn ctxt defaults [sT]);
wenzelm@14828
   486
wenzelm@18672
   487
fun read_term_thy freeze pp syn thy defaults s =
wenzelm@18672
   488
  #1 (read_def_termT freeze pp syn thy defaults (s, TypeInfer.logicT));
wenzelm@5874
   489
wenzelm@18672
   490
fun read_prop_thy freeze pp syn thy defaults s =
wenzelm@18672
   491
  #1 (read_def_termT freeze pp syn thy defaults (s, propT));
wenzelm@12072
   492
wenzelm@18672
   493
fun read_terms_thy freeze pp syn thy defaults =
wenzelm@18672
   494
  #1 o read_def_termTs freeze pp syn thy defaults o map (rpair TypeInfer.logicT);
wenzelm@12072
   495
wenzelm@18672
   496
fun read_props_thy freeze pp syn thy defaults =
wenzelm@18672
   497
  #1 o read_def_termTs freeze pp syn thy defaults o map (rpair propT);
wenzelm@5819
   498
wenzelm@5819
   499
wenzelm@19001
   500
(* local abbreviations *)
wenzelm@5819
   501
wenzelm@19371
   502
fun certify_consts ctxt =
wenzelm@19001
   503
  Consts.certify (pp ctxt) (tsig_of ctxt) (consts_of ctxt);
wenzelm@19001
   504
wenzelm@19001
   505
fun expand_binds ctxt schematic =
wenzelm@5819
   506
  let
wenzelm@18971
   507
    val binds = binds_of ctxt;
wenzelm@5819
   508
wenzelm@19001
   509
    fun expand_var (xi, T) =
wenzelm@18971
   510
      (case Vartab.lookup binds xi of
wenzelm@19422
   511
        SOME t => Envir.expand_atom T t
wenzelm@18971
   512
      | NONE =>
wenzelm@18971
   513
          if schematic then Var (xi, T)
wenzelm@18971
   514
          else error ("Unbound schematic variable: " ^ Syntax.string_of_vname xi));
wenzelm@19001
   515
  in Envir.beta_norm o Term.map_aterms (fn Var v => expand_var v | a => a) end;
wenzelm@5819
   516
wenzelm@5819
   517
wenzelm@6550
   518
(* dummy patterns *)
wenzelm@6550
   519
wenzelm@18310
   520
val prepare_dummies =
wenzelm@18310
   521
  let val next = ref 1 in
wenzelm@18310
   522
    fn t =>
wenzelm@18310
   523
      let val (i, u) = Term.replace_dummy_patterns (! next, t)
wenzelm@18310
   524
      in next := i; u end
wenzelm@18310
   525
  end;
wenzelm@6762
   526
wenzelm@18678
   527
fun reject_dummies t = Term.no_dummy_patterns t
wenzelm@18678
   528
  handle TERM _ => error "Illegal dummy pattern(s) in term";
wenzelm@6550
   529
wenzelm@6550
   530
wenzelm@5819
   531
(* read terms *)
wenzelm@5819
   532
wenzelm@10554
   533
local
wenzelm@10554
   534
skalberg@15531
   535
fun append_env e1 e2 x = (case e2 x of NONE => e1 x | some => some);
wenzelm@14720
   536
wenzelm@16031
   537
fun gen_read' read app pattern schematic
wenzelm@14720
   538
    ctxt internal more_types more_sorts more_used s =
ballarin@14174
   539
  let
wenzelm@14720
   540
    val types = append_env (def_type ctxt pattern) more_types;
wenzelm@14720
   541
    val sorts = append_env (def_sort ctxt) more_sorts;
wenzelm@14720
   542
    val used = used_types ctxt @ more_used;
ballarin@14174
   543
  in
wenzelm@18857
   544
    (read (pp ctxt) (syn_of ctxt) ctxt (types, sorts, used) s
wenzelm@18678
   545
      handle TERM (msg, _) => error msg)
wenzelm@14720
   546
    |> app (intern_skolem ctxt internal)
wenzelm@19371
   547
    |> app (certify_consts ctxt)
wenzelm@19001
   548
    |> app (if pattern then I else expand_binds ctxt schematic)
wenzelm@18678
   549
    |> app (if pattern then prepare_dummies else reject_dummies)
wenzelm@14720
   550
  end;
wenzelm@14720
   551
wenzelm@16031
   552
fun gen_read read app pattern schematic ctxt =
wenzelm@16031
   553
  gen_read' read app pattern schematic ctxt (K false) (K NONE) (K NONE) [];
wenzelm@14720
   554
wenzelm@10554
   555
in
wenzelm@10554
   556
wenzelm@16031
   557
val read_termTs           = gen_read' (read_def_termTs false) (apfst o map) false false;
wenzelm@16031
   558
val read_termTs_schematic = gen_read' (read_def_termTs false) (apfst o map) false true;
wenzelm@8096
   559
wenzelm@14720
   560
fun read_term_pats T ctxt =
wenzelm@16031
   561
  #1 o gen_read (read_def_termTs false) (apfst o map) true false ctxt o map (rpair T);
wenzelm@8096
   562
val read_prop_pats = read_term_pats propT;
wenzelm@8096
   563
wenzelm@18672
   564
fun read_term_legacy ctxt =
wenzelm@16458
   565
  gen_read' (read_term_thy true) I false false ctxt (K true) (K NONE) (K NONE) [];
wenzelm@14720
   566
wenzelm@19143
   567
val read_term            = gen_read (read_term_thy true) I false false;
wenzelm@19143
   568
val read_prop            = gen_read (read_prop_thy true) I false false;
wenzelm@19143
   569
val read_prop_schematic  = gen_read (read_prop_thy true) I false true;
wenzelm@19143
   570
val read_terms           = gen_read (read_terms_thy true) map false false;
wenzelm@19143
   571
fun read_props schematic = gen_read (read_props_thy true) map false schematic;
wenzelm@5819
   572
wenzelm@10554
   573
end;
wenzelm@10554
   574
wenzelm@5819
   575
wenzelm@5819
   576
(* certify terms *)
wenzelm@5819
   577
wenzelm@19371
   578
val test = ref (NONE: (context * term) option);
wenzelm@19371
   579
wenzelm@10554
   580
local
wenzelm@10554
   581
wenzelm@18971
   582
fun gen_cert prop pattern schematic ctxt t = t
wenzelm@19371
   583
  |> certify_consts ctxt
wenzelm@19001
   584
  |> (if pattern then I else expand_binds ctxt schematic)
wenzelm@19371
   585
  |> (fn t' => #1 (Sign.certify' false prop (pp ctxt) (consts_of ctxt) (theory_of ctxt) t')
wenzelm@18678
   586
    handle TYPE (msg, _, _) => error msg
wenzelm@18678
   587
      | TERM (msg, _) => error msg);
wenzelm@16501
   588
wenzelm@10554
   589
in
wenzelm@8096
   590
wenzelm@18971
   591
val cert_term = gen_cert false false false;
wenzelm@18971
   592
val cert_prop = gen_cert true false false;
wenzelm@18971
   593
val cert_props = map oo gen_cert true false;
wenzelm@10554
   594
wenzelm@18971
   595
fun cert_term_pats _ = map o gen_cert false true false;
wenzelm@18971
   596
val cert_prop_pats = map o gen_cert true true false;
wenzelm@10554
   597
wenzelm@10554
   598
end;
wenzelm@5819
   599
wenzelm@5819
   600
wenzelm@5819
   601
(* declare terms *)
wenzelm@5819
   602
wenzelm@10381
   603
local
wenzelm@10381
   604
wenzelm@16861
   605
val ins_types = fold_aterms
wenzelm@17412
   606
  (fn Free (x, T) => Vartab.update ((x, ~1), T)
wenzelm@17412
   607
    | Var v => Vartab.update v
wenzelm@16861
   608
    | _ => I);
wenzelm@5819
   609
wenzelm@16861
   610
val ins_sorts = fold_types (fold_atyps
wenzelm@19079
   611
  (fn TFree (x, S) => Vartab.update ((x, ~1), S)
wenzelm@19079
   612
    | TVar v => Vartab.update v
wenzelm@16861
   613
    | _ => I));
wenzelm@5819
   614
wenzelm@16861
   615
val ins_used = fold_term_types (fn t =>
wenzelm@16861
   616
  fold_atyps (fn TFree (x, _) => insert (op =) x | _ => I));
wenzelm@12291
   617
wenzelm@16861
   618
val ins_occs = fold_term_types (fn t =>
wenzelm@18953
   619
  fold_atyps (fn TFree (x, _) => Symtab.update_list (x, t) | _ => I));
wenzelm@5819
   620
wenzelm@16861
   621
fun ins_skolem def_ty = fold_rev (fn (x, x') =>
wenzelm@16861
   622
  (case def_ty x' of
wenzelm@17412
   623
    SOME T => Vartab.update ((x, ~1), T)
wenzelm@16861
   624
  | NONE => I));
wenzelm@5994
   625
wenzelm@16031
   626
in
wenzelm@16031
   627
wenzelm@19079
   628
fun declare_syntax t = map_defaults (fn (types, sorts, used, occ) =>
wenzelm@19079
   629
 (ins_types t types,
wenzelm@19079
   630
  ins_sorts t sorts,
wenzelm@19079
   631
  ins_used t used,
wenzelm@19079
   632
  occ));
wenzelm@10381
   633
wenzelm@19001
   634
fun declare_var (x, opt_T, mx) ctxt =
wenzelm@19001
   635
  let val T = (case opt_T of SOME T => T | NONE => TypeInfer.mixfixT mx)
wenzelm@19001
   636
  in ((x, T, mx), ctxt |> declare_syntax (Free (x, T))) end;
wenzelm@18672
   637
wenzelm@16540
   638
fun declare_term t ctxt =
wenzelm@16031
   639
  ctxt
wenzelm@18672
   640
  |> declare_syntax t
wenzelm@12291
   641
  |> map_defaults (fn (types, sorts, used, occ) =>
wenzelm@19079
   642
     (ins_skolem (fn x => Vartab.lookup types (x, ~1)) (fixes_of ctxt) types,
wenzelm@19079
   643
      sorts,
wenzelm@19079
   644
      used,
wenzelm@19079
   645
      ins_occs t occ));
wenzelm@5819
   646
wenzelm@18770
   647
end;
wenzelm@18770
   648
wenzelm@18770
   649
wenzelm@18770
   650
(* inferred types of parameters *)
wenzelm@18770
   651
wenzelm@18770
   652
fun infer_type ctxt x =
wenzelm@18770
   653
  (case try (fn () =>
wenzelm@18971
   654
      Sign.infer_types (pp ctxt) (theory_of ctxt) (consts_of ctxt) (def_type ctxt false)
wenzelm@18971
   655
        (def_sort ctxt) (used_types ctxt) true ([Free (x, dummyT)], TypeInfer.logicT)) () of
wenzelm@18770
   656
    SOME (Free (_, T), _) => T
wenzelm@18770
   657
  | _ => error ("Failed to infer type of fixed variable " ^ quote x));
wenzelm@18770
   658
wenzelm@18770
   659
fun inferred_param x ctxt =
wenzelm@18619
   660
  let val T = infer_type ctxt x
wenzelm@19019
   661
  in ((x, T), ctxt |> declare_syntax (Free (x, T))) end;
wenzelm@18619
   662
wenzelm@18770
   663
fun inferred_fixes ctxt =
wenzelm@18770
   664
  fold_map inferred_param (rev (fixed_names_of ctxt)) ctxt;
wenzelm@5819
   665
wenzelm@5819
   666
wenzelm@15703
   667
(* type and constant names *)
wenzelm@15703
   668
wenzelm@15703
   669
fun read_tyname ctxt c =
wenzelm@18340
   670
  if member (op =) (used_types ctxt) c then
wenzelm@18187
   671
    TFree (c, the_default (Sign.defaultS (theory_of ctxt)) (def_sort ctxt (c, ~1)))
wenzelm@16458
   672
  else Sign.read_tyname (theory_of ctxt) c;
wenzelm@15703
   673
wenzelm@15703
   674
fun read_const ctxt c =
wenzelm@15703
   675
  (case lookup_skolem ctxt c of
wenzelm@15703
   676
    SOME c' => Free (c', dummyT)
wenzelm@18971
   677
  | NONE => Consts.read_const (consts_of ctxt) c);
wenzelm@15703
   678
wenzelm@15703
   679
wenzelm@19019
   680
(* renaming term/type frees *)
wenzelm@19019
   681
wenzelm@19019
   682
fun rename_frees ctxt ts frees =
wenzelm@19019
   683
  let
wenzelm@19019
   684
    val (types, sorts, _, _) = defaults_of (ctxt |> fold declare_syntax ts);
wenzelm@19019
   685
    fun rename (x, X) xs =
wenzelm@19019
   686
      let
wenzelm@19274
   687
        fun used y = y = "" orelse y = "'" orelse member (op =) xs y orelse
wenzelm@19019
   688
          Vartab.defined types (y, ~1) orelse Vartab.defined sorts (y, ~1);
wenzelm@19019
   689
        val x' = Term.variant_name used x;
wenzelm@19019
   690
      in ((x', X), x' :: xs) end;
wenzelm@19019
   691
  in #1 (fold_map rename frees []) end;
wenzelm@19019
   692
wenzelm@19019
   693
wenzelm@8616
   694
wenzelm@8616
   695
(** Hindley-Milner polymorphism **)
wenzelm@8616
   696
wenzelm@7925
   697
(* warn_extra_tfrees *)
wenzelm@7925
   698
wenzelm@16540
   699
fun warn_extra_tfrees ctxt1 ctxt2 =
wenzelm@12130
   700
  let
wenzelm@17451
   701
    fun occs_typ a (Type (_, Ts)) = exists (occs_typ a) Ts
wenzelm@17451
   702
      | occs_typ a (TFree (b, _)) = a = b
wenzelm@17451
   703
      | occs_typ _ (TVar _) = false;
wenzelm@17451
   704
    fun occs_free a (Free (x, _)) =
wenzelm@17451
   705
          (case def_type ctxt1 false (x, ~1) of
wenzelm@17451
   706
            SOME T => if occs_typ a T then I else cons (a, x)
wenzelm@17451
   707
          | NONE => cons (a, x))
wenzelm@17451
   708
      | occs_free _ _ = I;
wenzelm@8616
   709
wenzelm@17451
   710
    val occs1 = type_occs_of ctxt1 and occs2 = type_occs_of ctxt2;
wenzelm@17451
   711
    val extras = Symtab.fold (fn (a, ts) =>
wenzelm@17451
   712
      if Symtab.defined occs1 a then I else fold (occs_free a) ts) occs2 [];
wenzelm@18428
   713
    val tfrees = map #1 extras |> sort_distinct string_ord;
wenzelm@18428
   714
    val frees = map #2 extras |> sort_distinct string_ord;
wenzelm@12130
   715
  in
wenzelm@12130
   716
    if null extras then ()
wenzelm@17451
   717
    else warning ("Introduced fixed type variable(s): " ^ commas tfrees ^ " in " ^
wenzelm@17860
   718
      space_implode " or " (map (string_of_term ctxt2 o Syntax.free) frees));
wenzelm@12130
   719
    ctxt2
wenzelm@12130
   720
  end;
wenzelm@8616
   721
wenzelm@8616
   722
wenzelm@8616
   723
(* generalize type variables *)
wenzelm@8616
   724
wenzelm@12550
   725
fun generalize_tfrees inner outer =
wenzelm@8616
   726
  let
wenzelm@19310
   727
    val extra_fixes = subtract (op =) (fixed_names_of outer) (fixed_names_of inner);
wenzelm@18340
   728
    fun still_fixed (Free (x, _)) = not (member (op =) extra_fixes x)
wenzelm@8616
   729
      | still_fixed _ = false;
wenzelm@16540
   730
    val occs_inner = type_occs_of inner;
wenzelm@16540
   731
    val occs_outer = type_occs_of outer;
wenzelm@16031
   732
    fun add a gen =
wenzelm@16894
   733
      if Symtab.defined occs_outer a orelse
wenzelm@18953
   734
        exists still_fixed (Symtab.lookup_list occs_inner a)
wenzelm@8616
   735
      then gen else a :: gen;
wenzelm@16031
   736
  in fn tfrees => fold add tfrees [] end;
wenzelm@8616
   737
wenzelm@12550
   738
fun generalize inner outer ts =
wenzelm@8616
   739
  let
wenzelm@18187
   740
    val tfrees = generalize_tfrees inner outer (map #1 (fold Term.add_tfrees ts []));
wenzelm@18340
   741
    fun gen (x, S) = if member (op =) tfrees x then TVar ((x, 0), S) else TFree (x, S);
wenzelm@12550
   742
  in map (Term.map_term_types (Term.map_type_tfree gen)) ts end;
wenzelm@8616
   743
wenzelm@8616
   744
wenzelm@19001
   745
(* polymorphic terms *)
wenzelm@19001
   746
wenzelm@19270
   747
fun monomorphic ctxt ts =
wenzelm@19270
   748
  let
wenzelm@19270
   749
    val tvars = fold Term.add_tvars ts [];
wenzelm@19274
   750
    val tfrees = map TFree (rename_frees ctxt ts (map (pair "'" o #2) tvars));
wenzelm@19270
   751
    val specialize = Term.instantiate ((tvars ~~ tfrees), []);
wenzelm@19270
   752
  in map specialize ts end;
wenzelm@19270
   753
wenzelm@19001
   754
fun polymorphic ctxt ts =
wenzelm@19001
   755
  generalize (ctxt |> fold declare_term ts) ctxt ts;
wenzelm@19001
   756
wenzelm@19270
   757
fun hidden_polymorphism t T =
wenzelm@19270
   758
  let
wenzelm@19270
   759
    val tvarsT = Term.add_tvarsT T [];
wenzelm@19270
   760
    val extra_tvars = Term.fold_types (Term.fold_atyps
wenzelm@19270
   761
      (fn TVar v => if member (op =) tvarsT v then I else insert (op =) v | _ => I)) t [];
wenzelm@19270
   762
  in extra_tvars end;
wenzelm@19001
   763
wenzelm@19001
   764
wenzelm@9553
   765
wenzelm@9553
   766
(** export theorems **)
wenzelm@8616
   767
wenzelm@18042
   768
fun common_exports is_goal inner outer =
wenzelm@8616
   769
  let
wenzelm@12550
   770
    val gen = generalize_tfrees inner outer;
wenzelm@19310
   771
    val fixes = subtract (op =) (fixed_names_of outer) (fixed_names_of inner);
wenzelm@12057
   772
    val asms = Library.drop (length (assumptions_of outer), assumptions_of inner);
wenzelm@11816
   773
    val exp_asms = map (fn (cprops, exp) => exp is_goal cprops) asms;
wenzelm@16948
   774
  in
wenzelm@18255
   775
    Goal.norm_hhf_protect
wenzelm@16948
   776
    #> Seq.EVERY (rev exp_asms)
wenzelm@16948
   777
    #> Seq.map (fn rule =>
wenzelm@11816
   778
      let
wenzelm@16992
   779
        val thy = Thm.theory_of_thm rule;
wenzelm@16992
   780
        val prop = Thm.full_prop_of rule;
wenzelm@19482
   781
        val frees = map (Thm.cterm_of thy) (map_filter (Term.find_free prop) fixes);
wenzelm@12550
   782
        val tfrees = gen (Term.add_term_tfree_names (prop, []));
wenzelm@11816
   783
      in
wenzelm@11816
   784
        rule
wenzelm@11816
   785
        |> Drule.forall_intr_list frees
wenzelm@18255
   786
        |> Goal.norm_hhf_protect
wenzelm@18138
   787
        |> Drule.tvars_intr_list tfrees |> #2
wenzelm@11816
   788
      end)
wenzelm@11816
   789
  end;
wenzelm@8616
   790
wenzelm@18785
   791
fun export_standard inner outer =
wenzelm@18122
   792
  let val exp = common_exports false inner outer in
wenzelm@13378
   793
    fn th =>
wenzelm@18122
   794
      (case Seq.pull (exp th) of
skalberg@15531
   795
        SOME (th', _) => th' |> Drule.local_standard
wenzelm@16850
   796
      | NONE => sys_error "Failed to export theorem")
wenzelm@13378
   797
  end;
wenzelm@12704
   798
wenzelm@18122
   799
val exports = common_exports false;
wenzelm@18122
   800
val goal_exports = common_exports true;
wenzelm@7925
   801
wenzelm@5819
   802
wenzelm@15758
   803
wenzelm@5819
   804
(** bindings **)
wenzelm@5819
   805
wenzelm@15758
   806
(* delete_update_binds *)
wenzelm@15758
   807
wenzelm@15758
   808
local
wenzelm@5819
   809
wenzelm@18672
   810
val del_bind = map_binds o Vartab.delete_safe;
wenzelm@7606
   811
wenzelm@15758
   812
fun upd_bind ((x, i), t) =
wenzelm@8616
   813
  let
wenzelm@8616
   814
    val T = Term.fastype_of t;
wenzelm@8616
   815
    val t' =
wenzelm@19270
   816
      if null (hidden_polymorphism t T) then t
wenzelm@8637
   817
      else Var ((x ^ "_has_extra_type_vars_on_rhs", i), T);
wenzelm@18953
   818
  in declare_term t' #> map_binds (Vartab.update ((x, i), (T, t'))) end;
wenzelm@5819
   819
wenzelm@15758
   820
fun del_upd_bind (xi, NONE) = del_bind xi
wenzelm@15758
   821
  | del_upd_bind (xi, SOME t) = upd_bind (xi, t);
wenzelm@7606
   822
wenzelm@15758
   823
in
wenzelm@15758
   824
wenzelm@15758
   825
val delete_update_binds = fold del_upd_bind;
wenzelm@15758
   826
wenzelm@15758
   827
end;
wenzelm@7606
   828
wenzelm@5819
   829
wenzelm@8096
   830
(* simult_matches *)
wenzelm@8096
   831
wenzelm@8616
   832
fun simult_matches ctxt [] = []
wenzelm@8616
   833
  | simult_matches ctxt pairs =
wenzelm@8096
   834
      let
wenzelm@18678
   835
        fun fail () = error "Pattern match failed!";
wenzelm@10554
   836
wenzelm@16031
   837
        val maxidx = fold (fn (t1, t2) => fn i =>
wenzelm@16031
   838
          Int.max (Int.max (Term.maxidx_of_term t1, Term.maxidx_of_term t2), i)) pairs ~1;
wenzelm@16458
   839
        val envs = Unify.smash_unifiers (theory_of ctxt, Envir.empty maxidx,
wenzelm@10554
   840
          map swap pairs);    (*prefer assignment of variables from patterns*)
wenzelm@10554
   841
        val env =
wenzelm@8096
   842
          (case Seq.pull envs of
skalberg@15531
   843
            NONE => fail ()
skalberg@15531
   844
          | SOME (env, _) => env);    (*ignore further results*)
wenzelm@12309
   845
        val domain =
wenzelm@12309
   846
          filter_out Term.is_replaced_dummy_pattern (map #1 (Drule.vars_of_terms (map #1 pairs)));
wenzelm@10554
   847
        val _ =    (*may not assign variables from text*)
wenzelm@12309
   848
          if null (map #1 (Envir.alist_of env) inter (map #1 (Drule.vars_of_terms (map #2 pairs))))
wenzelm@12309
   849
          then () else fail ();
wenzelm@16948
   850
        fun norm_bind (xi, (_, t)) =
wenzelm@18310
   851
          if member (op =) domain xi then SOME (xi, Envir.norm_term env t) else NONE;
wenzelm@19482
   852
      in map_filter norm_bind (Envir.alist_of env) end;
wenzelm@8096
   853
wenzelm@8096
   854
wenzelm@8096
   855
(* add_binds(_i) *)
wenzelm@5819
   856
wenzelm@7925
   857
local
wenzelm@7925
   858
wenzelm@16031
   859
fun gen_bind prep (xi as (x, _), raw_t) ctxt =
skalberg@15570
   860
  ctxt |> delete_update_binds [(xi, Option.map (prep ctxt) raw_t)];
wenzelm@5819
   861
wenzelm@10810
   862
in
wenzelm@10810
   863
skalberg@15531
   864
fun drop_schematic (b as (xi, SOME t)) = if null (Term.term_vars t) then b else (xi, NONE)
wenzelm@10554
   865
  | drop_schematic b = b;
wenzelm@10554
   866
wenzelm@16031
   867
val add_binds = fold (gen_bind read_term);
wenzelm@16031
   868
val add_binds_i = fold (gen_bind cert_term);
wenzelm@8616
   869
wenzelm@16458
   870
fun auto_bind f ts ctxt = ctxt |> add_binds_i (map drop_schematic (f (theory_of ctxt) ts));
wenzelm@12147
   871
val auto_bind_goal = auto_bind AutoBind.goal;
wenzelm@12147
   872
val auto_bind_facts = auto_bind AutoBind.facts;
wenzelm@7925
   873
wenzelm@7925
   874
end;
wenzelm@5819
   875
wenzelm@5819
   876
wenzelm@8096
   877
(* match_bind(_i) *)
wenzelm@5819
   878
wenzelm@8096
   879
local
wenzelm@8096
   880
wenzelm@17860
   881
fun prep_bind prep_pats (raw_pats, t) ctxt =
wenzelm@5819
   882
  let
wenzelm@8096
   883
    val ctxt' = declare_term t ctxt;
wenzelm@8096
   884
    val pats = prep_pats (fastype_of t) ctxt' raw_pats;
wenzelm@8616
   885
    val binds = simult_matches ctxt' (map (rpair t) pats);
wenzelm@17860
   886
  in (binds, ctxt') end;
wenzelm@7670
   887
wenzelm@10465
   888
fun gen_binds prep_terms prep_pats gen raw_binds ctxt =
wenzelm@8616
   889
  let
wenzelm@10465
   890
    val ts = prep_terms ctxt (map snd raw_binds);
wenzelm@17860
   891
    val (binds, ctxt') =
wenzelm@19482
   892
      apfst flat (fold_map (prep_bind prep_pats) (map fst raw_binds ~~ ts) ctxt);
wenzelm@8616
   893
    val binds' =
wenzelm@12550
   894
      if gen then map #1 binds ~~ generalize ctxt' ctxt (map #2 binds)
wenzelm@8616
   895
      else binds;
skalberg@15531
   896
    val binds'' = map (apsnd SOME) binds';
wenzelm@18310
   897
    val ctxt'' =
wenzelm@18310
   898
      warn_extra_tfrees ctxt
wenzelm@18310
   899
       (if gen then
wenzelm@18310
   900
          ctxt (*sic!*) |> fold declare_term (map #2 binds') |> add_binds_i binds''
wenzelm@18310
   901
        else ctxt' |> add_binds_i binds'');
wenzelm@18310
   902
  in (ts, ctxt'') end;
wenzelm@8096
   903
wenzelm@8096
   904
in
wenzelm@5935
   905
wenzelm@10465
   906
val match_bind = gen_binds read_terms read_term_pats;
wenzelm@10465
   907
val match_bind_i = gen_binds (map o cert_term) cert_term_pats;
wenzelm@8096
   908
wenzelm@8096
   909
end;
wenzelm@5935
   910
wenzelm@5935
   911
wenzelm@10465
   912
(* propositions with patterns *)
wenzelm@5935
   913
wenzelm@10465
   914
local
wenzelm@8096
   915
wenzelm@10554
   916
fun prep_propp schematic prep_props prep_pats (context, args) =
wenzelm@10465
   917
  let
wenzelm@17860
   918
    fun prep (_, (raw_pats1, raw_pats2)) (ctxt, prop :: props) =
wenzelm@10465
   919
          let
wenzelm@10465
   920
            val ctxt' = declare_term prop ctxt;
wenzelm@10465
   921
            val pats = prep_pats ctxt' (raw_pats1 @ raw_pats2);    (*simultaneous type inference!*)
wenzelm@19019
   922
          in ((prop, chop (length raw_pats1) pats), (ctxt', props)) end
wenzelm@17860
   923
      | prep _ _ = sys_error "prep_propp";
wenzelm@17860
   924
    val (propp, (context', _)) = (fold_map o fold_map) prep args
wenzelm@19482
   925
      (context, prep_props schematic context (maps (map fst) args));
wenzelm@10465
   926
  in (context', propp) end;
wenzelm@5935
   927
wenzelm@10465
   928
fun matches ctxt (prop, (pats1, pats2)) =
wenzelm@10465
   929
  simult_matches ctxt (map (rpair prop) pats1 @ map (rpair (Logic.strip_imp_concl prop)) pats2);
wenzelm@8096
   930
wenzelm@10465
   931
fun gen_bind_propp prepp (ctxt, raw_args) =
wenzelm@8096
   932
  let
wenzelm@10465
   933
    val (ctxt', args) = prepp (ctxt, raw_args);
wenzelm@19482
   934
    val binds = flat (flat (map (map (matches ctxt')) args));
wenzelm@10465
   935
    val propss = map (map #1) args;
wenzelm@8616
   936
wenzelm@10554
   937
    (*generalize result: context evaluated now, binds added later*)
wenzelm@8616
   938
    val gen = generalize ctxt' ctxt;
skalberg@15531
   939
    fun gen_binds c = c |> add_binds_i (map #1 binds ~~ map SOME (gen (map #2 binds)));
skalberg@15531
   940
  in (ctxt' |> add_binds_i (map (apsnd SOME) binds), (propss, gen_binds)) end;
wenzelm@8096
   941
wenzelm@10465
   942
in
wenzelm@10465
   943
wenzelm@11925
   944
val read_propp = prep_propp false read_props read_prop_pats;
wenzelm@11925
   945
val cert_propp = prep_propp false cert_props cert_prop_pats;
wenzelm@10554
   946
val read_propp_schematic = prep_propp true read_props read_prop_pats;
wenzelm@10554
   947
val cert_propp_schematic = prep_propp true cert_props cert_prop_pats;
wenzelm@10554
   948
wenzelm@11925
   949
val bind_propp = gen_bind_propp read_propp;
wenzelm@11925
   950
val bind_propp_i = gen_bind_propp cert_propp;
wenzelm@11925
   951
val bind_propp_schematic = gen_bind_propp read_propp_schematic;
wenzelm@10554
   952
val bind_propp_schematic_i = gen_bind_propp cert_propp_schematic;
wenzelm@6789
   953
wenzelm@10465
   954
end;
wenzelm@10465
   955
wenzelm@6789
   956
wenzelm@5819
   957
wenzelm@5819
   958
(** theorems **)
wenzelm@5819
   959
wenzelm@18042
   960
(* fact_tac *)
wenzelm@18042
   961
wenzelm@18122
   962
fun comp_incr_tac [] _ st = no_tac st
wenzelm@18122
   963
  | comp_incr_tac (th :: ths) i st =
wenzelm@18122
   964
      (Goal.compose_hhf_tac (Drule.incr_indexes st th) i APPEND comp_incr_tac ths i) st;
wenzelm@18042
   965
wenzelm@18122
   966
fun fact_tac facts = Tactic.norm_hhf_tac THEN' comp_incr_tac facts;
wenzelm@18122
   967
wenzelm@18122
   968
fun some_fact_tac ctxt = SUBGOAL (fn (goal, i) =>
wenzelm@18042
   969
  let
wenzelm@19001
   970
    val index = fact_index_of ctxt;
wenzelm@18042
   971
    val facts = FactIndex.could_unify index (Term.strip_all_body goal);
wenzelm@18042
   972
  in fact_tac facts i end);
wenzelm@18042
   973
wenzelm@18042
   974
wenzelm@6091
   975
(* get_thm(s) *)
wenzelm@5819
   976
wenzelm@18042
   977
fun retrieve_thms _ pick ctxt (Fact s) =
wenzelm@16501
   978
      let
wenzelm@18042
   979
        val thy = theory_of ctxt;
wenzelm@18042
   980
        val th = Goal.prove thy [] [] (read_prop ctxt s) (K (ALLGOALS (some_fact_tac ctxt)))
wenzelm@18678
   981
          handle ERROR msg => cat_error msg "Failed to retrieve literal fact.";
wenzelm@18042
   982
      in pick "" [th] end
wenzelm@18042
   983
  | retrieve_thms from_thy pick ctxt xthmref =
wenzelm@18042
   984
      let
wenzelm@18042
   985
        val thy = theory_of ctxt;
wenzelm@19001
   986
        val (space, tab) = #1 (thms_of ctxt);
wenzelm@16501
   987
        val thmref = PureThy.map_name_of_thmref (NameSpace.intern space) xthmref;
wenzelm@16501
   988
        val name = PureThy.name_of_thmref thmref;
wenzelm@16501
   989
      in
wenzelm@17412
   990
        (case Symtab.lookup tab name of
wenzelm@16540
   991
          SOME ths => map (Thm.transfer thy) (PureThy.select_thm thmref ths)
wenzelm@16540
   992
        | NONE => from_thy thy xthmref) |> pick name
wenzelm@18042
   993
      end;
wenzelm@5819
   994
wenzelm@9566
   995
val get_thm = retrieve_thms PureThy.get_thms PureThy.single_thm;
wenzelm@9566
   996
val get_thm_closure = retrieve_thms PureThy.get_thms_closure PureThy.single_thm;
wenzelm@9566
   997
val get_thms = retrieve_thms PureThy.get_thms (K I);
wenzelm@9566
   998
val get_thms_closure = retrieve_thms PureThy.get_thms_closure (K I);
wenzelm@5819
   999
wenzelm@5819
  1000
wenzelm@16031
  1001
(* valid_thms *)
wenzelm@16031
  1002
wenzelm@16031
  1003
fun valid_thms ctxt (name, ths) =
wenzelm@18678
  1004
  (case try (fn () => get_thms ctxt (Name name)) () of
wenzelm@16031
  1005
    NONE => false
wenzelm@16147
  1006
  | SOME ths' => Thm.eq_thms (ths, ths'));
wenzelm@16031
  1007
wenzelm@16031
  1008
wenzelm@16031
  1009
(* lthms_containing *)
wenzelm@16031
  1010
wenzelm@16031
  1011
fun lthms_containing ctxt spec =
wenzelm@16031
  1012
  FactIndex.find (fact_index_of ctxt) spec
wenzelm@18043
  1013
  |> map ((not o valid_thms ctxt) ? apfst (fn name =>
wenzelm@18042
  1014
    NameSpace.hidden (if name = "" then "unnamed" else name)));
wenzelm@16031
  1015
wenzelm@16031
  1016
wenzelm@13425
  1017
(* name space operations *)
wenzelm@12309
  1018
wenzelm@19001
  1019
val extern_thm = NameSpace.extern o #1 o #1 o thms_of;
wenzelm@12309
  1020
wenzelm@19062
  1021
val no_base_names   = map_naming NameSpace.no_base_names;
wenzelm@16147
  1022
val qualified_names = map_naming NameSpace.qualified_names;
wenzelm@19062
  1023
val sticky_prefix   = map_naming o NameSpace.sticky_prefix;
wenzelm@19062
  1024
val restore_naming  = map_naming o K o naming_of;
wenzelm@12309
  1025
wenzelm@19001
  1026
fun hide_thms fully names = map_thms (fn ((space, tab), index) =>
wenzelm@19001
  1027
  ((fold (NameSpace.hide fully) names space, tab), index));
wenzelm@13425
  1028
wenzelm@12309
  1029
wenzelm@17360
  1030
(* put_thms *)
wenzelm@5819
  1031
wenzelm@19079
  1032
fun put_thms _ ("", NONE) ctxt = ctxt
wenzelm@19143
  1033
  | put_thms do_index ("", SOME ths) ctxt = ctxt |> map_thms (fn (facts, index) =>
wenzelm@18672
  1034
      let
wenzelm@19143
  1035
        val index' = FactIndex.add_local do_index (is_known ctxt) ("", ths) index;
wenzelm@19001
  1036
      in (facts, index') end)
wenzelm@19079
  1037
  | put_thms _ (bname, NONE) ctxt = ctxt |> map_thms (fn ((space, tab), index) =>
wenzelm@18672
  1038
      let
wenzelm@19387
  1039
        val name = full_name ctxt bname;
wenzelm@18672
  1040
        val tab' = Symtab.delete_safe name tab;
wenzelm@19001
  1041
      in ((space, tab'), index) end)
wenzelm@19079
  1042
  | put_thms do_index (bname, SOME ths) ctxt = ctxt |> map_thms (fn ((space, tab), index) =>
wenzelm@18672
  1043
      let
wenzelm@19387
  1044
        val name = full_name ctxt bname;
wenzelm@19001
  1045
        val space' = NameSpace.declare (naming_of ctxt) name space;
wenzelm@18672
  1046
        val tab' = Symtab.update (name, ths) tab;
wenzelm@19143
  1047
        val index' = FactIndex.add_local do_index (is_known ctxt) (name, ths) index;
wenzelm@19001
  1048
      in ((space', tab'), index') end);
wenzelm@5819
  1049
wenzelm@19079
  1050
fun put_thms_internal thms ctxt =
wenzelm@19079
  1051
  ctxt |> map_naming (K local_naming) |> put_thms false thms |> restore_naming ctxt;
wenzelm@19079
  1052
wenzelm@7606
  1053
wenzelm@14564
  1054
(* note_thmss *)
wenzelm@5819
  1055
wenzelm@12711
  1056
local
wenzelm@16147
  1057
wenzelm@17860
  1058
fun gen_note_thmss get = fold_map (fn ((name, more_attrs), ths_attrs) => fn ctxt =>
wenzelm@5819
  1059
  let
wenzelm@17360
  1060
    fun app (th, attrs) (ct, ths) =
wenzelm@18728
  1061
      let val (ct', th') = foldl_map (Thm.proof_attributes (attrs @ more_attrs)) (ct, get ctxt th)
wenzelm@12711
  1062
      in (ct', th' :: ths) end;
wenzelm@17360
  1063
    val (ctxt', rev_thms) = fold app ths_attrs (ctxt, []);
wenzelm@19482
  1064
    val thms = flat (rev rev_thms);
wenzelm@19079
  1065
  in ((name, thms), ctxt' |> put_thms true (name, SOME thms)) end);
wenzelm@12711
  1066
wenzelm@12711
  1067
in
wenzelm@12711
  1068
wenzelm@16147
  1069
val note_thmss = gen_note_thmss get_thms;
wenzelm@16147
  1070
val note_thmss_i = gen_note_thmss (K I);
ballarin@15696
  1071
ballarin@15696
  1072
val note_thmss_accesses = gen_note_thmss get_thms;
ballarin@15696
  1073
val note_thmss_accesses_i = gen_note_thmss (K I);
wenzelm@12711
  1074
wenzelm@12711
  1075
end;
wenzelm@9196
  1076
wenzelm@5819
  1077
wenzelm@5819
  1078
wenzelm@18672
  1079
(** parameters **)
wenzelm@17360
  1080
wenzelm@8096
  1081
(* variables *)
wenzelm@8096
  1082
wenzelm@10381
  1083
local
wenzelm@10381
  1084
wenzelm@18672
  1085
fun prep_vars prep_typ internal legacy =
wenzelm@18672
  1086
  fold_map (fn (raw_x, raw_T, raw_mx) => fn ctxt =>
wenzelm@18672
  1087
    let
wenzelm@19371
  1088
      val (x, mx) = Syntax.const_mixfix raw_x raw_mx;
wenzelm@18672
  1089
      val _ =
wenzelm@18678
  1090
        if not legacy andalso not (Syntax.is_identifier (no_skolem internal x)) then
wenzelm@18678
  1091
          error ("Illegal variable name: " ^ quote x)
wenzelm@18672
  1092
        else ();
wenzelm@12504
  1093
wenzelm@18672
  1094
      fun cond_tvars T =
wenzelm@18672
  1095
        if internal then T
wenzelm@18678
  1096
        else Type.no_tvars T handle TYPE (msg, _, _) => error msg;
wenzelm@18672
  1097
      val opt_T = Option.map (cond_tvars o prep_typ ctxt) raw_T;
wenzelm@18672
  1098
      val var = (x, opt_T, mx);
wenzelm@19001
  1099
    in (var, ctxt |> declare_var var |> #2) end);
wenzelm@8096
  1100
wenzelm@10381
  1101
in
wenzelm@10381
  1102
wenzelm@18672
  1103
val read_vars        = prep_vars read_typ false false;
wenzelm@18672
  1104
val cert_vars        = prep_vars cert_typ true false;
wenzelm@18672
  1105
val read_vars_legacy = prep_vars read_typ true true;
wenzelm@18672
  1106
val cert_vars_legacy = prep_vars cert_typ true true;
wenzelm@8096
  1107
wenzelm@10381
  1108
end;
wenzelm@10381
  1109
wenzelm@8096
  1110
wenzelm@19001
  1111
(* abbreviations *)
wenzelm@19001
  1112
wenzelm@19371
  1113
val expand_abbrevs = map_consts o apsnd o Consts.expand_abbrevs;
wenzelm@19371
  1114
wenzelm@19001
  1115
local
wenzelm@19001
  1116
wenzelm@19371
  1117
fun gen_abbrevs prep_vars prep_term (mode, inout) = fold (fn (raw_c, raw_t, raw_mx) => fn ctxt =>
wenzelm@19001
  1118
  let
wenzelm@19001
  1119
    val ([(c, _, mx)], _) = prep_vars [(raw_c, NONE, raw_mx)] ctxt;
wenzelm@19387
  1120
    val (c', b) = Syntax.mixfix_const (full_name ctxt c) mx;
wenzelm@19371
  1121
    val [t] = polymorphic ctxt [prep_term (ctxt |> expand_abbrevs false) raw_t];
wenzelm@19019
  1122
    val T = Term.fastype_of t;
wenzelm@19001
  1123
    val _ =
wenzelm@19270
  1124
      if null (hidden_polymorphism t T) then ()
wenzelm@19001
  1125
      else error ("Extra type variables on rhs of abbreviation: " ^ quote c);
wenzelm@19001
  1126
  in
wenzelm@19001
  1127
    ctxt
wenzelm@19001
  1128
    |> declare_term t
wenzelm@19387
  1129
    |> map_consts
wenzelm@19387
  1130
      (apsnd (Consts.abbreviate (pp ctxt) (tsig_of ctxt) (naming_of ctxt) mode ((c, t), b)))
wenzelm@19387
  1131
    |> map_syntax (LocalSyntax.add_syntax (theory_of ctxt) (mode, inout) [(false, (c', T, mx))])
wenzelm@19001
  1132
  end);
wenzelm@19001
  1133
wenzelm@19001
  1134
in
wenzelm@19001
  1135
wenzelm@19001
  1136
val add_abbrevs = gen_abbrevs read_vars read_term;
wenzelm@19001
  1137
val add_abbrevs_i = gen_abbrevs cert_vars cert_term;
wenzelm@19001
  1138
wenzelm@19001
  1139
end;
wenzelm@19001
  1140
wenzelm@19001
  1141
wenzelm@18672
  1142
(* fixes *)
wenzelm@5819
  1143
wenzelm@8096
  1144
local
wenzelm@8096
  1145
wenzelm@19001
  1146
fun prep_mixfix (x, T, mx) =
wenzelm@19019
  1147
  if mx <> NoSyn andalso mx <> Structure andalso
wenzelm@19019
  1148
      (can Syntax.dest_internal x orelse can Syntax.dest_skolem x) then
wenzelm@19001
  1149
    error ("Illegal mixfix syntax for internal/skolem constant " ^ quote x)
wenzelm@19001
  1150
  else (true, (x, T, mx));
wenzelm@19001
  1151
wenzelm@18672
  1152
fun no_dups _ [] = ()
wenzelm@18900
  1153
  | no_dups ctxt dups = error ("Duplicate fixed variable(s): " ^ commas_quote dups);
wenzelm@11925
  1154
wenzelm@18844
  1155
fun gen_fixes prep raw_vars ctxt =
wenzelm@8096
  1156
  let
wenzelm@19371
  1157
    val thy = theory_of ctxt;
wenzelm@19371
  1158
wenzelm@18672
  1159
    val (ys, zs) = split_list (fixes_of ctxt);
wenzelm@18672
  1160
    val (vars, ctxt') = prep raw_vars ctxt;
wenzelm@12130
  1161
    val xs = map #1 vars;
wenzelm@18971
  1162
    val _ = no_dups ctxt (duplicates (op =) xs);
wenzelm@18672
  1163
    val xs' =
wenzelm@18672
  1164
      if is_body ctxt then Term.variantlist (map Syntax.skolem xs, zs)
wenzelm@18672
  1165
      else (no_dups ctxt (xs inter_string ys); no_dups ctxt (xs inter_string zs); xs);
wenzelm@8096
  1166
  in
wenzelm@18672
  1167
    ctxt'
wenzelm@18672
  1168
    |> map_fixes (fn (b, fixes) => (b, rev (xs ~~ xs') @ fixes))
wenzelm@19001
  1169
    |> fold_map declare_var (map2 (fn x' => fn (_, T, mx) => (x', T, mx)) xs' vars)
wenzelm@19371
  1170
    |-> (map_syntax o LocalSyntax.add_syntax thy Syntax.default_mode o map prep_mixfix)
wenzelm@18672
  1171
    |> pair xs'
wenzelm@8096
  1172
  end;
wenzelm@5819
  1173
wenzelm@8096
  1174
in
wenzelm@7679
  1175
wenzelm@18844
  1176
val add_fixes = gen_fixes read_vars;
wenzelm@18844
  1177
val add_fixes_i = gen_fixes cert_vars;
wenzelm@18844
  1178
val add_fixes_legacy = gen_fixes cert_vars_legacy;
wenzelm@8096
  1179
wenzelm@8096
  1180
end;
wenzelm@5819
  1181
wenzelm@18672
  1182
wenzelm@18844
  1183
(* invent fixes *)
wenzelm@18844
  1184
wenzelm@18844
  1185
fun invent_fixes xs ctxt =
wenzelm@18844
  1186
  ctxt
wenzelm@18844
  1187
  |> set_body true
wenzelm@18844
  1188
  |> add_fixes_i (map (fn x => (x, NONE, NoSyn)) xs)
wenzelm@18844
  1189
  ||> restore_body ctxt;
wenzelm@18844
  1190
wenzelm@18844
  1191
wenzelm@18672
  1192
(* fixes vs. frees *)
wenzelm@12016
  1193
wenzelm@18672
  1194
fun fix_frees t ctxt =
wenzelm@18672
  1195
  let
wenzelm@18672
  1196
    fun add (Free (x, T)) = if is_fixed ctxt x then I else insert (op =) (x, SOME T, NoSyn)
wenzelm@18672
  1197
      | add _ = I;
wenzelm@18672
  1198
    val fixes = rev (fold_aterms add t []);
wenzelm@18809
  1199
  in
wenzelm@18809
  1200
    ctxt
wenzelm@18809
  1201
    |> declare_term t
wenzelm@18809
  1202
    |> set_body false
wenzelm@18809
  1203
    |> (snd o add_fixes_i fixes)
wenzelm@18809
  1204
    |> restore_body ctxt
wenzelm@18809
  1205
  end;
wenzelm@6895
  1206
wenzelm@18672
  1207
fun auto_fixes (arg as (ctxt, (propss, x))) =
wenzelm@18672
  1208
  if is_body ctxt then arg
wenzelm@18672
  1209
  else ((fold o fold) fix_frees propss ctxt, (propss, x));
wenzelm@18672
  1210
wenzelm@18672
  1211
fun bind_fixes xs ctxt =
wenzelm@9291
  1212
  let
wenzelm@18672
  1213
    val (_, ctxt') = ctxt |> add_fixes_i (map (fn x => (x, NONE, NoSyn)) xs);
wenzelm@9291
  1214
    fun bind (t as Free (x, T)) =
wenzelm@18340
  1215
          if member (op =) xs x then
skalberg@15531
  1216
            (case lookup_skolem ctxt' x of SOME x' => Free (x', T) | NONE => t)
wenzelm@9291
  1217
          else t
wenzelm@9291
  1218
      | bind (t $ u) = bind t $ bind u
wenzelm@9291
  1219
      | bind (Abs (x, T, t)) = Abs (x, T, bind t)
wenzelm@9291
  1220
      | bind a = a;
wenzelm@18672
  1221
  in (bind, ctxt') end;
wenzelm@18672
  1222
wenzelm@9291
  1223
wenzelm@9291
  1224
wenzelm@18672
  1225
(** assumptions **)
wenzelm@18187
  1226
wenzelm@18672
  1227
(* generic assms *)
wenzelm@18187
  1228
wenzelm@18187
  1229
local
wenzelm@18187
  1230
wenzelm@18672
  1231
fun gen_assm ((name, attrs), props) ctxt =
wenzelm@18187
  1232
  let
wenzelm@18187
  1233
    val cprops = map (Thm.cterm_of (theory_of ctxt)) props;
wenzelm@18187
  1234
    val asms = map (Goal.norm_hhf o Thm.assume) cprops;
wenzelm@18187
  1235
wenzelm@18187
  1236
    val ths = map (fn th => ([th], [])) asms;
wenzelm@18187
  1237
    val ([(_, thms)], ctxt') =
wenzelm@18187
  1238
      ctxt
wenzelm@18187
  1239
      |> auto_bind_facts props
wenzelm@18187
  1240
      |> note_thmss_i [((name, attrs), ths)];
wenzelm@18187
  1241
  in ((cprops, (name, asms), (name, thms)), ctxt') end;
wenzelm@18187
  1242
wenzelm@18187
  1243
fun gen_assms prepp exp args ctxt =
wenzelm@18187
  1244
  let
wenzelm@18672
  1245
    val (propss, ctxt1) = swap (prepp (ctxt, map snd args));
wenzelm@18672
  1246
    val (results, ctxt2) = fold_map gen_assm (map fst args ~~ propss) ctxt1;
wenzelm@18187
  1247
wenzelm@19482
  1248
    val new_asms = maps #1 results;
wenzelm@18672
  1249
    val new_prems = map #2 results;
wenzelm@18809
  1250
    val ctxt3 = ctxt2
wenzelm@18809
  1251
      |> map_assms (fn (asms, prems) => (asms @ [(new_asms, exp)], prems @ new_prems))
wenzelm@18809
  1252
    val ctxt4 = ctxt3
wenzelm@19079
  1253
      |> put_thms_internal (AutoBind.premsN, SOME (prems_of ctxt3));
wenzelm@18672
  1254
  in (map #3 results, warn_extra_tfrees ctxt ctxt4) end;
wenzelm@18187
  1255
wenzelm@18187
  1256
in
wenzelm@18187
  1257
wenzelm@18672
  1258
val add_assms = gen_assms (apsnd #1 o bind_propp);
wenzelm@18672
  1259
val add_assms_i = gen_assms (apsnd #1 o bind_propp_i);
wenzelm@18187
  1260
wenzelm@18187
  1261
end;
wenzelm@18187
  1262
wenzelm@18187
  1263
wenzelm@18672
  1264
(* basic assumptions *)
wenzelm@18672
  1265
wenzelm@18879
  1266
(*
wenzelm@18879
  1267
    [A]
wenzelm@18971
  1268
     :
wenzelm@18879
  1269
     B
wenzelm@18879
  1270
  --------
wenzelm@18879
  1271
  #A ==> B
wenzelm@18879
  1272
*)
wenzelm@18672
  1273
fun assume_export true = Seq.single oo Drule.implies_intr_protected
wenzelm@18672
  1274
  | assume_export false = Seq.single oo Drule.implies_intr_list;
wenzelm@18672
  1275
wenzelm@18879
  1276
(*
wenzelm@18879
  1277
    [A]
wenzelm@18971
  1278
     :
wenzelm@18879
  1279
     B
wenzelm@18879
  1280
  -------
wenzelm@18879
  1281
  A ==> B
wenzelm@18879
  1282
*)
wenzelm@18672
  1283
fun presume_export _ = assume_export false;
wenzelm@18672
  1284
wenzelm@18672
  1285
wenzelm@18672
  1286
(* additional views *)
wenzelm@18672
  1287
wenzelm@18672
  1288
fun add_view outer view = map_assms (fn (asms, prems) =>
wenzelm@18672
  1289
  let
wenzelm@19019
  1290
    val (asms1, asms2) = chop (length (assumptions_of outer)) asms;
wenzelm@18672
  1291
    val asms' = asms1 @ [(view, assume_export)] @ asms2;
wenzelm@18672
  1292
  in (asms', prems) end);
wenzelm@18672
  1293
wenzelm@18785
  1294
fun export_view view inner outer = export_standard (add_view outer view inner) outer;
wenzelm@18672
  1295
wenzelm@18672
  1296
wenzelm@5819
  1297
wenzelm@8373
  1298
(** cases **)
wenzelm@8373
  1299
wenzelm@16147
  1300
local
wenzelm@16147
  1301
wenzelm@16668
  1302
fun rem_case name = remove (fn (x: string, (y, _)) => x = y) name;
wenzelm@16147
  1303
wenzelm@18476
  1304
fun add_case _ ("", _) cases = cases
wenzelm@18476
  1305
  | add_case _ (name, NONE) cases = rem_case name cases
wenzelm@18476
  1306
  | add_case is_proper (name, SOME c) cases = (name, (c, is_proper)) :: rem_case name cases;
wenzelm@16147
  1307
wenzelm@18678
  1308
fun prep_case name fxs c =
wenzelm@18609
  1309
  let
wenzelm@18609
  1310
    fun replace (opt_x :: xs) ((y, T) :: ys) = (the_default y opt_x, T) :: replace xs ys
wenzelm@18609
  1311
      | replace [] ys = ys
wenzelm@18678
  1312
      | replace (_ :: _) [] = error ("Too many parameters for case " ^ quote name);
wenzelm@18609
  1313
    val RuleCases.Case {fixes, assumes, binds, cases} = c;
wenzelm@18609
  1314
    val fixes' = replace fxs fixes;
wenzelm@18609
  1315
    val binds' = map drop_schematic binds;
wenzelm@18609
  1316
  in
wenzelm@18609
  1317
    if null (fold (Term.add_tvarsT o snd) fixes []) andalso
wenzelm@18609
  1318
      null (fold (fold Term.add_vars o snd) assumes []) then
wenzelm@18609
  1319
        RuleCases.Case {fixes = fixes', assumes = assumes, binds = binds', cases = cases}
wenzelm@18678
  1320
    else error ("Illegal schematic variable(s) in case " ^ quote name)
wenzelm@18609
  1321
  end;
wenzelm@18609
  1322
wenzelm@18672
  1323
fun fix (x, T) ctxt =
wenzelm@18672
  1324
  let
wenzelm@18672
  1325
    val (bind, ctxt') = bind_fixes [x] ctxt;
wenzelm@18672
  1326
    val t = bind (Free (x, T));
wenzelm@18672
  1327
  in (t, ctxt' |> declare_syntax t) end;
wenzelm@18672
  1328
wenzelm@16147
  1329
in
wenzelm@16147
  1330
wenzelm@18672
  1331
fun add_cases is_proper = map_cases o fold (add_case is_proper);
wenzelm@18609
  1332
wenzelm@18609
  1333
fun case_result c ctxt =
wenzelm@18609
  1334
  let
wenzelm@18609
  1335
    val RuleCases.Case {fixes, ...} = c;
wenzelm@18672
  1336
    val (ts, ctxt') = ctxt |> fold_map fix fixes;
wenzelm@18672
  1337
    val RuleCases.Case {assumes, binds, cases, ...} = RuleCases.apply ts c;
wenzelm@18609
  1338
  in
wenzelm@18609
  1339
    ctxt'
wenzelm@18699
  1340
    |> add_binds_i (map drop_schematic binds)
wenzelm@18609
  1341
    |> add_cases true (map (apsnd SOME) cases)
wenzelm@18609
  1342
    |> pair (assumes, (binds, cases))
wenzelm@18609
  1343
  end;
wenzelm@18609
  1344
wenzelm@18609
  1345
val apply_case = apfst fst oo case_result;
wenzelm@18609
  1346
wenzelm@16540
  1347
fun get_case ctxt name xs =
wenzelm@17184
  1348
  (case AList.lookup (op =) (cases_of ctxt) name of
wenzelm@18678
  1349
    NONE => error ("Unknown case: " ^ quote name)
wenzelm@18678
  1350
  | SOME (c, _) => prep_case name xs c);
wenzelm@8373
  1351
wenzelm@16147
  1352
end;
wenzelm@8373
  1353
wenzelm@8373
  1354
wenzelm@8373
  1355
wenzelm@10810
  1356
(** print context information **)
wenzelm@10810
  1357
wenzelm@10810
  1358
val verbose = ref false;
wenzelm@10810
  1359
fun verb f x = if ! verbose then f (x ()) else [];
wenzelm@10810
  1360
wenzelm@10810
  1361
fun setmp_verbose f x = Library.setmp verbose true f x;
wenzelm@10810
  1362
wenzelm@10810
  1363
fun pretty_items prt name items =
wenzelm@10810
  1364
  let
wenzelm@10810
  1365
    fun prt_itms (name, [x]) = Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt x]
wenzelm@10810
  1366
      | prt_itms (name, xs) = Pretty.big_list (name ^ ":") (map prt xs);
wenzelm@10810
  1367
  in
wenzelm@10810
  1368
    if null items andalso not (! verbose) then []
wenzelm@10810
  1369
    else [Pretty.big_list name (map prt_itms items)]
wenzelm@10810
  1370
  end;
wenzelm@10810
  1371
wenzelm@10810
  1372
wenzelm@12072
  1373
(* local syntax *)
wenzelm@12072
  1374
wenzelm@12093
  1375
val print_syntax = Syntax.print_syntax o syn_of;
wenzelm@12072
  1376
wenzelm@12072
  1377
wenzelm@18971
  1378
(* local consts *)
wenzelm@18971
  1379
wenzelm@18971
  1380
fun pretty_consts ctxt =
wenzelm@18971
  1381
  let
wenzelm@19033
  1382
    val ((_, globals), (space, consts)) =
wenzelm@19033
  1383
      pairself (#constants o Consts.dest) (#consts (rep_context ctxt));
wenzelm@18971
  1384
    fun local_abbrev (_, (_, NONE)) = I
wenzelm@18971
  1385
      | local_abbrev (c, (T, SOME t)) =
wenzelm@18971
  1386
          if Symtab.defined globals c then I else cons (c, Logic.mk_equals (Const (c, T), t));
wenzelm@18971
  1387
    val abbrevs = NameSpace.extern_table (space, Symtab.make (Symtab.fold local_abbrev consts []));
wenzelm@18971
  1388
  in
wenzelm@18971
  1389
    if null abbrevs andalso not (! verbose) then []
wenzelm@19310
  1390
    else [Pretty.big_list "abbreviations:" (map (pretty_term_no_abbrevs ctxt o #2) abbrevs)]
wenzelm@18971
  1391
  end;
wenzelm@18971
  1392
wenzelm@18971
  1393
wenzelm@10810
  1394
(* term bindings *)
wenzelm@10810
  1395
wenzelm@16540
  1396
fun pretty_binds ctxt =
wenzelm@10810
  1397
  let
wenzelm@16540
  1398
    val binds = binds_of ctxt;
wenzelm@19310
  1399
    fun prt_bind (xi, (T, t)) = pretty_term_no_abbrevs ctxt (Logic.mk_equals (Var (xi, T), t));
wenzelm@10810
  1400
  in
wenzelm@15758
  1401
    if Vartab.is_empty binds andalso not (! verbose) then []
wenzelm@15758
  1402
    else [Pretty.big_list "term bindings:" (map prt_bind (Vartab.dest binds))]
wenzelm@10810
  1403
  end;
wenzelm@10810
  1404
wenzelm@10810
  1405
val print_binds = Pretty.writeln o Pretty.chunks o pretty_binds;
wenzelm@10810
  1406
wenzelm@10810
  1407
wenzelm@10810
  1408
(* local theorems *)
wenzelm@10810
  1409
wenzelm@16540
  1410
fun pretty_lthms ctxt =
wenzelm@19001
  1411
  pretty_items (pretty_thm ctxt) "facts:" (NameSpace.extern_table (#1 (thms_of ctxt)));
wenzelm@10810
  1412
wenzelm@12057
  1413
val print_lthms = Pretty.writeln o Pretty.chunks o pretty_lthms;
wenzelm@10810
  1414
wenzelm@10810
  1415
wenzelm@10810
  1416
(* local contexts *)
wenzelm@10810
  1417
wenzelm@16540
  1418
fun pretty_cases ctxt =
wenzelm@10810
  1419
  let
wenzelm@12057
  1420
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1421
wenzelm@10810
  1422
    fun prt_let (xi, t) = Pretty.block
wenzelm@10818
  1423
      [Pretty.quote (prt_term (Var (xi, Term.fastype_of t))), Pretty.str " =", Pretty.brk 1,
wenzelm@10810
  1424
        Pretty.quote (prt_term t)];
wenzelm@10810
  1425
wenzelm@13425
  1426
    fun prt_asm (a, ts) = Pretty.block (Pretty.breaks
wenzelm@13425
  1427
      ((if a = "" then [] else [Pretty.str (a ^ ":")]) @ map (Pretty.quote o prt_term) ts));
wenzelm@13425
  1428
wenzelm@10810
  1429
    fun prt_sect _ _ _ [] = []
wenzelm@10810
  1430
      | prt_sect s sep prt xs = [Pretty.block (Pretty.breaks (Pretty.str s ::
wenzelm@19482
  1431
            flat (Library.separate sep (map (Library.single o prt) xs))))];
wenzelm@10810
  1432
wenzelm@18609
  1433
    fun prt_case (name, (fixes, (asms, (lets, cs)))) = Pretty.block (Pretty.fbreaks
wenzelm@10810
  1434
      (Pretty.str (name ^ ":") ::
wenzelm@11915
  1435
        prt_sect "fix" [] (Pretty.str o fst) fixes @
wenzelm@10810
  1436
        prt_sect "let" [Pretty.str "and"] prt_let
wenzelm@19482
  1437
          (map_filter (fn (xi, SOME t) => SOME (xi, t) | _ => NONE) lets) @
wenzelm@13425
  1438
        (if forall (null o #2) asms then []
wenzelm@18609
  1439
          else prt_sect "assume" [Pretty.str "and"] prt_asm asms) @
wenzelm@18609
  1440
        prt_sect "subcases:" [] (Pretty.str o fst) cs));
wenzelm@16540
  1441
wenzelm@18476
  1442
    fun add_case (_, (_, false)) = I
wenzelm@18609
  1443
      | add_case (name, (c as RuleCases.Case {fixes, ...}, true)) =
wenzelm@18609
  1444
          cons (name, (fixes, #1 (case_result c ctxt)));
wenzelm@18476
  1445
    val cases = fold add_case (cases_of ctxt) [];
wenzelm@10810
  1446
  in
wenzelm@10810
  1447
    if null cases andalso not (! verbose) then []
wenzelm@18476
  1448
    else [Pretty.big_list "cases:" (map prt_case cases)]
wenzelm@10810
  1449
  end;
wenzelm@10810
  1450
wenzelm@10810
  1451
val print_cases = Pretty.writeln o Pretty.chunks o pretty_cases;
wenzelm@10810
  1452
wenzelm@10810
  1453
wenzelm@12057
  1454
(* core context *)
wenzelm@10810
  1455
wenzelm@10810
  1456
val prems_limit = ref 10;
wenzelm@10810
  1457
wenzelm@18672
  1458
fun pretty_ctxt ctxt =
wenzelm@10810
  1459
  let
wenzelm@12057
  1460
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1461
wenzelm@12093
  1462
    (*structures*)
wenzelm@19001
  1463
    val structs = LocalSyntax.structs_of (syntax_of ctxt);
wenzelm@12093
  1464
    val prt_structs = if null structs then []
wenzelm@12093
  1465
      else [Pretty.block (Pretty.str "structures:" :: Pretty.brk 1 ::
wenzelm@12093
  1466
        Pretty.commas (map Pretty.str structs))];
wenzelm@12093
  1467
wenzelm@12057
  1468
    (*fixes*)
wenzelm@12057
  1469
    fun prt_fix (x, x') =
wenzelm@12057
  1470
      if x = x' then Pretty.str x
wenzelm@12057
  1471
      else Pretty.block [Pretty.str x, Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')];
wenzelm@18340
  1472
    val fixes =
wenzelm@18340
  1473
      rev (filter_out ((can Syntax.dest_internal orf member (op =) structs) o #1) (fixes_of ctxt));
wenzelm@12093
  1474
    val prt_fixes = if null fixes then []
wenzelm@12093
  1475
      else [Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 ::
wenzelm@12093
  1476
        Pretty.commas (map prt_fix fixes))];
wenzelm@12057
  1477
wenzelm@12057
  1478
    (*prems*)
wenzelm@10810
  1479
    val limit = ! prems_limit;
wenzelm@10810
  1480
    val prems = prems_of ctxt;
wenzelm@10810
  1481
    val len = length prems;
wenzelm@12093
  1482
    val prt_prems = if null prems then []
wenzelm@12093
  1483
      else [Pretty.big_list "prems:" ((if len <= limit then [] else [Pretty.str "..."]) @
wenzelm@12093
  1484
        map (pretty_thm ctxt) (Library.drop (len - limit, prems)))];
wenzelm@12093
  1485
wenzelm@12093
  1486
  in prt_structs @ prt_fixes @ prt_prems end;
wenzelm@10810
  1487
wenzelm@10810
  1488
wenzelm@10810
  1489
(* main context *)
wenzelm@10810
  1490
wenzelm@16540
  1491
fun pretty_context ctxt =
wenzelm@10810
  1492
  let
wenzelm@12057
  1493
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1494
    val prt_typ = pretty_typ ctxt;
wenzelm@12057
  1495
    val prt_sort = pretty_sort ctxt;
wenzelm@10810
  1496
wenzelm@10810
  1497
    (*theory*)
wenzelm@12057
  1498
    val pretty_thy = Pretty.block
wenzelm@17384
  1499
      [Pretty.str "theory:", Pretty.brk 1, Context.pretty_thy (theory_of ctxt)];
wenzelm@10810
  1500
wenzelm@10810
  1501
    (*defaults*)
wenzelm@10810
  1502
    fun prt_atom prt prtT (x, X) = Pretty.block
wenzelm@10810
  1503
      [prt x, Pretty.str " ::", Pretty.brk 1, prtT X];
wenzelm@10810
  1504
wenzelm@10810
  1505
    fun prt_var (x, ~1) = prt_term (Syntax.free x)
wenzelm@10810
  1506
      | prt_var xi = prt_term (Syntax.var xi);
wenzelm@10810
  1507
wenzelm@10810
  1508
    fun prt_varT (x, ~1) = prt_typ (TFree (x, []))
wenzelm@10810
  1509
      | prt_varT xi = prt_typ (TVar (xi, []));
wenzelm@10810
  1510
wenzelm@10810
  1511
    val prt_defT = prt_atom prt_var prt_typ;
wenzelm@10810
  1512
    val prt_defS = prt_atom prt_varT prt_sort;
wenzelm@16540
  1513
wenzelm@16540
  1514
    val (types, sorts, used, _) = defaults_of ctxt;
wenzelm@10810
  1515
  in
wenzelm@18609
  1516
    verb single (K pretty_thy) @
wenzelm@18672
  1517
    pretty_ctxt ctxt @
wenzelm@18971
  1518
    verb pretty_consts (K ctxt) @
wenzelm@10810
  1519
    verb pretty_binds (K ctxt) @
wenzelm@12057
  1520
    verb pretty_lthms (K ctxt) @
wenzelm@10810
  1521
    verb pretty_cases (K ctxt) @
wenzelm@18609
  1522
    verb single (fn () => Pretty.big_list "type constraints:" (map prt_defT (Vartab.dest types))) @
wenzelm@18609
  1523
    verb single (fn () => Pretty.big_list "default sorts:" (map prt_defS (Vartab.dest sorts))) @
wenzelm@18809
  1524
    verb single (fn () => Pretty.strs ("used type variable names:" :: rev used))
wenzelm@10810
  1525
  end;
wenzelm@10810
  1526
wenzelm@18809
  1527
wenzelm@18809
  1528
(* toplevel pretty printing *)
wenzelm@18809
  1529
wenzelm@18809
  1530
val debug = ref false;
wenzelm@18809
  1531
wenzelm@18809
  1532
fun pprint_context ctxt = Pretty.pprint
wenzelm@18809
  1533
 (if ! debug then Pretty.quote (Pretty.big_list "proof context:" (pretty_context ctxt))
wenzelm@18809
  1534
  else Pretty.str "<context>");
wenzelm@18809
  1535
wenzelm@5819
  1536
end;