src/Pure/Isar/proof_context.ML
author wenzelm
Sat Apr 08 22:51:28 2006 +0200 (2006-04-08 ago)
changeset 19371 32fc9743803a
parent 19310 9b2080d9ed28
child 19387 6af442fa80c3
permissions -rw-r--r--
add_abbrevs(_i): support print mode;
pretty_term': expand abbreviations only for well-typed terms;
added expand_abbrevs;
tuned;
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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 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 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 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 List.concat o map #1 o assumptions_of;
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val prems_of = List.concat o map #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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fun is_fixed ctxt x = exists (fn (_, y) => x = y) (fixes_of ctxt);
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   293
fun is_known ctxt x = Vartab.defined (#1 (defaults_of ctxt)) (x, ~1) orelse is_fixed ctxt x;
wenzelm@5819
   294
wenzelm@5819
   295
wenzelm@19001
   296
(* transfer *)
wenzelm@12093
   297
wenzelm@19001
   298
fun transfer_syntax thy =
wenzelm@19001
   299
  map_syntax (LocalSyntax.rebuild thy) #>
wenzelm@19033
   300
  map_consts (fn consts as (global_consts, local_consts) =>
wenzelm@19033
   301
    let val thy_consts = Sign.consts_of thy in
wenzelm@19033
   302
      if Consts.eq_consts (thy_consts, global_consts) then consts
wenzelm@19033
   303
      else (thy_consts, Consts.merge (thy_consts, local_consts))
wenzelm@19033
   304
    end);
wenzelm@17072
   305
wenzelm@19001
   306
fun transfer thy = Context.transfer_proof thy #> transfer_syntax thy;
wenzelm@17072
   307
wenzelm@19019
   308
fun map_theory f ctxt = transfer (f (theory_of ctxt)) ctxt;
wenzelm@19019
   309
wenzelm@12093
   310
wenzelm@12093
   311
wenzelm@14828
   312
(** pretty printing **)
wenzelm@14828
   313
wenzelm@19310
   314
local
wenzelm@19310
   315
wenzelm@19371
   316
fun rewrite_term thy rews t =
wenzelm@19371
   317
  if can Term.type_of t then Pattern.rewrite_term thy rews [] t
wenzelm@19371
   318
  else (warning "Printing ill-typed term -- cannot expand abbreviations"; t);
wenzelm@19371
   319
wenzelm@19001
   320
fun pretty_term' abbrevs ctxt t =
wenzelm@18971
   321
  let
wenzelm@19001
   322
    val thy = theory_of ctxt;
wenzelm@19001
   323
    val syntax = syntax_of ctxt;
wenzelm@18971
   324
    val consts = consts_of ctxt;
wenzelm@19001
   325
    val t' = t
wenzelm@19371
   326
      |> K abbrevs ? rewrite_term thy (Consts.abbrevs_of consts (! print_mode @ [""]))
wenzelm@19371
   327
      |> Sign.extern_term (Consts.extern_early consts) thy
wenzelm@19371
   328
      |> LocalSyntax.extern_term syntax;
wenzelm@19371
   329
  in
wenzelm@19371
   330
    Sign.pretty_term' (Context.Proof ctxt) (LocalSyntax.syn_of syntax) (Consts.extern consts) t'
wenzelm@19371
   331
  end;
wenzelm@18971
   332
wenzelm@19310
   333
in
wenzelm@19310
   334
wenzelm@19001
   335
val pretty_term = pretty_term' true;
wenzelm@19310
   336
val pretty_term_no_abbrevs = pretty_term' false;
wenzelm@19310
   337
wenzelm@19310
   338
end;
wenzelm@19310
   339
wenzelm@16458
   340
fun pretty_typ ctxt T = Sign.pretty_typ (theory_of ctxt) T;
wenzelm@16458
   341
fun pretty_sort ctxt S = Sign.pretty_sort (theory_of ctxt) S;
wenzelm@16458
   342
fun pretty_classrel ctxt cs = Sign.pretty_classrel (theory_of ctxt) cs;
wenzelm@16458
   343
fun pretty_arity ctxt ar = Sign.pretty_arity (theory_of ctxt) ar;
wenzelm@14828
   344
wenzelm@14974
   345
fun pp ctxt = Pretty.pp (pretty_term ctxt, pretty_typ ctxt, pretty_sort ctxt,
wenzelm@14974
   346
  pretty_classrel ctxt, pretty_arity ctxt);
wenzelm@14828
   347
wenzelm@17451
   348
fun pretty_thm ctxt th =
wenzelm@17451
   349
  Display.pretty_thm_aux (pp ctxt) false true (assms_of ctxt) th;
wenzelm@14828
   350
wenzelm@14828
   351
fun pretty_thms ctxt [th] = pretty_thm ctxt th
wenzelm@14828
   352
  | pretty_thms ctxt ths = Pretty.blk (0, Pretty.fbreaks (map (pretty_thm ctxt) ths));
wenzelm@14828
   353
wenzelm@14828
   354
fun pretty_fact ctxt ("", ths) = pretty_thms ctxt ths
wenzelm@14828
   355
  | pretty_fact ctxt (a, [th]) =
wenzelm@14828
   356
      Pretty.block [Pretty.str (a ^ ":"), Pretty.brk 1, pretty_thm ctxt th]
wenzelm@14828
   357
  | pretty_fact ctxt (a, ths) =
wenzelm@14828
   358
      Pretty.block (Pretty.fbreaks (Pretty.str (a ^ ":") :: map (pretty_thm ctxt) ths));
wenzelm@14828
   359
wenzelm@17072
   360
fun pretty_proof ctxt prf =
wenzelm@19310
   361
  pretty_term_no_abbrevs (ctxt |> transfer_syntax (ProofSyntax.proof_syntax prf (theory_of ctxt)))
wenzelm@17072
   362
    (ProofSyntax.term_of_proof prf);
wenzelm@17072
   363
wenzelm@17072
   364
fun pretty_proof_of ctxt full th =
wenzelm@17072
   365
  pretty_proof ctxt (ProofSyntax.proof_of full th);
wenzelm@17072
   366
wenzelm@17860
   367
val string_of_typ = Pretty.string_of oo pretty_typ;
wenzelm@17860
   368
val string_of_term = Pretty.string_of oo pretty_term;
wenzelm@17860
   369
val string_of_thm = Pretty.string_of oo pretty_thm;
wenzelm@17860
   370
wenzelm@14828
   371
wenzelm@14828
   372
wenzelm@7663
   373
(** default sorts and types **)
wenzelm@7663
   374
wenzelm@17412
   375
val def_sort = Vartab.lookup o #2 o defaults_of;
wenzelm@7663
   376
wenzelm@16540
   377
fun def_type ctxt pattern xi =
wenzelm@18672
   378
  let val {binds, defaults = (types, _, _, _), ...} = rep_context ctxt in
wenzelm@17412
   379
    (case Vartab.lookup types xi of
wenzelm@16540
   380
      NONE =>
wenzelm@16540
   381
        if pattern then NONE
wenzelm@18953
   382
        else Vartab.lookup binds xi |> Option.map (TypeInfer.polymorphicT o #1)
wenzelm@16540
   383
    | some => some)
wenzelm@16540
   384
  end;
wenzelm@7663
   385
wenzelm@18672
   386
val used_types = #3 o defaults_of;
wenzelm@18672
   387
wenzelm@17412
   388
fun default_type ctxt x = Vartab.lookup (#1 (defaults_of ctxt)) (x, ~1);
wenzelm@12414
   389
wenzelm@7663
   390
wenzelm@5819
   391
wenzelm@5819
   392
(** prepare types **)
wenzelm@5819
   393
wenzelm@9504
   394
local
wenzelm@9504
   395
wenzelm@9504
   396
fun read_typ_aux read ctxt s =
wenzelm@18857
   397
  read (syn_of ctxt) (Context.Proof ctxt) (def_sort ctxt) s;
wenzelm@5819
   398
wenzelm@10554
   399
fun cert_typ_aux cert ctxt raw_T =
wenzelm@18678
   400
  cert (theory_of ctxt) raw_T handle TYPE (msg, _, _) => error msg;
wenzelm@9504
   401
wenzelm@9504
   402
in
wenzelm@9504
   403
wenzelm@16348
   404
val read_typ        = read_typ_aux Sign.read_typ';
wenzelm@16348
   405
val read_typ_syntax = read_typ_aux Sign.read_typ_syntax';
wenzelm@16348
   406
val read_typ_abbrev = read_typ_aux Sign.read_typ_abbrev';
wenzelm@16348
   407
val cert_typ        = cert_typ_aux Sign.certify_typ;
wenzelm@16348
   408
val cert_typ_syntax = cert_typ_aux Sign.certify_typ_syntax;
wenzelm@16348
   409
val cert_typ_abbrev = cert_typ_aux Sign.certify_typ_abbrev;
wenzelm@9504
   410
wenzelm@9504
   411
end;
wenzelm@9504
   412
wenzelm@5819
   413
wenzelm@7679
   414
(* internalize Skolem constants *)
wenzelm@7679
   415
wenzelm@17184
   416
val lookup_skolem = AList.lookup (op =) o fixes_of;
wenzelm@18187
   417
fun get_skolem ctxt x = the_default x (lookup_skolem ctxt x);
wenzelm@7679
   418
wenzelm@18678
   419
fun no_skolem internal x =
wenzelm@9291
   420
  if can Syntax.dest_skolem x then
wenzelm@18678
   421
    error ("Illegal reference to internal Skolem constant: " ^ quote x)
wenzelm@12504
   422
  else if not internal andalso can Syntax.dest_internal x then
wenzelm@18678
   423
    error ("Illegal reference to internal variable: " ^ quote x)
wenzelm@7679
   424
  else x;
wenzelm@7679
   425
wenzelm@14720
   426
fun intern_skolem ctxt internal =
wenzelm@7679
   427
  let
wenzelm@7679
   428
    fun intern (t as Free (x, T)) =
wenzelm@14720
   429
          if internal x then t
wenzelm@14720
   430
          else
wenzelm@18678
   431
            (case lookup_skolem ctxt (no_skolem false x) of
skalberg@15531
   432
              SOME x' => Free (x', T)
skalberg@15531
   433
            | NONE => t)
wenzelm@7679
   434
      | intern (t $ u) = intern t $ intern u
wenzelm@7679
   435
      | intern (Abs (x, T, t)) = Abs (x, T, intern t)
wenzelm@7679
   436
      | intern a = a;
wenzelm@7679
   437
  in intern end;
wenzelm@7679
   438
wenzelm@7679
   439
wenzelm@18187
   440
(* externalize Skolem constants -- approximation only! *)
wenzelm@18187
   441
wenzelm@18255
   442
fun rev_skolem ctxt =
wenzelm@18187
   443
  let val rev_fixes = map Library.swap (fixes_of ctxt)
wenzelm@18187
   444
  in AList.lookup (op =) rev_fixes end;
wenzelm@9133
   445
wenzelm@18255
   446
fun revert_skolem ctxt x =
wenzelm@18255
   447
  (case rev_skolem ctxt x of
wenzelm@18255
   448
    SOME x' => x'
wenzelm@18375
   449
  | NONE => perhaps (try Syntax.dest_skolem) x);
wenzelm@18255
   450
wenzelm@9133
   451
fun extern_skolem ctxt =
wenzelm@9133
   452
  let
wenzelm@18255
   453
    val revert = rev_skolem ctxt;
wenzelm@9133
   454
    fun extern (t as Free (x, T)) =
wenzelm@18187
   455
        (case revert x of
wenzelm@18187
   456
          SOME x' => Free (if lookup_skolem ctxt x' = SOME x then x' else NameSpace.hidden x', T)
wenzelm@18187
   457
        | NONE => t)
wenzelm@9133
   458
      | extern (t $ u) = extern t $ extern u
wenzelm@9133
   459
      | extern (Abs (x, T, t)) = Abs (x, T, extern t)
wenzelm@9133
   460
      | extern a = a;
wenzelm@9133
   461
  in extern end
wenzelm@9133
   462
wenzelm@8096
   463
wenzelm@18187
   464
wenzelm@5819
   465
(** prepare terms and propositions **)
wenzelm@5819
   466
wenzelm@5819
   467
(*
wenzelm@16501
   468
  (1) read / certify wrt. theory of context
wenzelm@5819
   469
  (2) intern Skolem constants
wenzelm@5819
   470
  (3) expand term bindings
wenzelm@5819
   471
*)
wenzelm@5819
   472
wenzelm@5819
   473
wenzelm@16501
   474
(* read wrt. theory *)     (*exception ERROR*)
wenzelm@5819
   475
wenzelm@18857
   476
fun read_def_termTs freeze pp syn ctxt (types, sorts, used) sTs =
wenzelm@18971
   477
  Sign.read_def_terms' pp (Sign.is_logtype (theory_of ctxt)) syn (consts_of ctxt)
wenzelm@18857
   478
    (Context.Proof ctxt) (types, sorts) used freeze sTs;
wenzelm@5874
   479
wenzelm@18857
   480
fun read_def_termT freeze pp syn ctxt defaults sT =
wenzelm@18857
   481
  apfst hd (read_def_termTs freeze pp syn ctxt defaults [sT]);
wenzelm@14828
   482
wenzelm@18672
   483
fun read_term_thy freeze pp syn thy defaults s =
wenzelm@18672
   484
  #1 (read_def_termT freeze pp syn thy defaults (s, TypeInfer.logicT));
wenzelm@5874
   485
wenzelm@18672
   486
fun read_prop_thy freeze pp syn thy defaults s =
wenzelm@18672
   487
  #1 (read_def_termT freeze pp syn thy defaults (s, propT));
wenzelm@12072
   488
wenzelm@18672
   489
fun read_terms_thy freeze pp syn thy defaults =
wenzelm@18672
   490
  #1 o read_def_termTs freeze pp syn thy defaults o map (rpair TypeInfer.logicT);
wenzelm@12072
   491
wenzelm@18672
   492
fun read_props_thy freeze pp syn thy defaults =
wenzelm@18672
   493
  #1 o read_def_termTs freeze pp syn thy defaults o map (rpair propT);
wenzelm@5819
   494
wenzelm@5819
   495
wenzelm@19001
   496
(* local abbreviations *)
wenzelm@5819
   497
wenzelm@19371
   498
fun certify_consts ctxt =
wenzelm@19001
   499
  Consts.certify (pp ctxt) (tsig_of ctxt) (consts_of ctxt);
wenzelm@19001
   500
wenzelm@19001
   501
fun expand_binds ctxt schematic =
wenzelm@5819
   502
  let
wenzelm@18971
   503
    val binds = binds_of ctxt;
wenzelm@5819
   504
wenzelm@19001
   505
    fun expand_var (xi, T) =
wenzelm@18971
   506
      (case Vartab.lookup binds xi of
wenzelm@19001
   507
        SOME t => Envir.expand_atom (tsig_of ctxt) T t
wenzelm@18971
   508
      | NONE =>
wenzelm@18971
   509
          if schematic then Var (xi, T)
wenzelm@18971
   510
          else error ("Unbound schematic variable: " ^ Syntax.string_of_vname xi));
wenzelm@19001
   511
  in Envir.beta_norm o Term.map_aterms (fn Var v => expand_var v | a => a) end;
wenzelm@5819
   512
wenzelm@5819
   513
wenzelm@6550
   514
(* dummy patterns *)
wenzelm@6550
   515
wenzelm@18310
   516
val prepare_dummies =
wenzelm@18310
   517
  let val next = ref 1 in
wenzelm@18310
   518
    fn t =>
wenzelm@18310
   519
      let val (i, u) = Term.replace_dummy_patterns (! next, t)
wenzelm@18310
   520
      in next := i; u end
wenzelm@18310
   521
  end;
wenzelm@6762
   522
wenzelm@18678
   523
fun reject_dummies t = Term.no_dummy_patterns t
wenzelm@18678
   524
  handle TERM _ => error "Illegal dummy pattern(s) in term";
wenzelm@6550
   525
wenzelm@6550
   526
wenzelm@5819
   527
(* read terms *)
wenzelm@5819
   528
wenzelm@10554
   529
local
wenzelm@10554
   530
skalberg@15531
   531
fun append_env e1 e2 x = (case e2 x of NONE => e1 x | some => some);
wenzelm@14720
   532
wenzelm@16031
   533
fun gen_read' read app pattern schematic
wenzelm@14720
   534
    ctxt internal more_types more_sorts more_used s =
ballarin@14174
   535
  let
wenzelm@14720
   536
    val types = append_env (def_type ctxt pattern) more_types;
wenzelm@14720
   537
    val sorts = append_env (def_sort ctxt) more_sorts;
wenzelm@14720
   538
    val used = used_types ctxt @ more_used;
ballarin@14174
   539
  in
wenzelm@18857
   540
    (read (pp ctxt) (syn_of ctxt) ctxt (types, sorts, used) s
wenzelm@18678
   541
      handle TERM (msg, _) => error msg)
wenzelm@14720
   542
    |> app (intern_skolem ctxt internal)
wenzelm@19371
   543
    |> app (certify_consts ctxt)
wenzelm@19001
   544
    |> app (if pattern then I else expand_binds ctxt schematic)
wenzelm@18678
   545
    |> app (if pattern then prepare_dummies else reject_dummies)
wenzelm@14720
   546
  end;
wenzelm@14720
   547
wenzelm@16031
   548
fun gen_read read app pattern schematic ctxt =
wenzelm@16031
   549
  gen_read' read app pattern schematic ctxt (K false) (K NONE) (K NONE) [];
wenzelm@14720
   550
wenzelm@10554
   551
in
wenzelm@10554
   552
wenzelm@16031
   553
val read_termTs           = gen_read' (read_def_termTs false) (apfst o map) false false;
wenzelm@16031
   554
val read_termTs_schematic = gen_read' (read_def_termTs false) (apfst o map) false true;
wenzelm@8096
   555
wenzelm@14720
   556
fun read_term_pats T ctxt =
wenzelm@16031
   557
  #1 o gen_read (read_def_termTs false) (apfst o map) true false ctxt o map (rpair T);
wenzelm@8096
   558
val read_prop_pats = read_term_pats propT;
wenzelm@8096
   559
wenzelm@18672
   560
fun read_term_legacy ctxt =
wenzelm@16458
   561
  gen_read' (read_term_thy true) I false false ctxt (K true) (K NONE) (K NONE) [];
wenzelm@14720
   562
wenzelm@19143
   563
val read_term            = gen_read (read_term_thy true) I false false;
wenzelm@19143
   564
val read_prop            = gen_read (read_prop_thy true) I false false;
wenzelm@19143
   565
val read_prop_schematic  = gen_read (read_prop_thy true) I false true;
wenzelm@19143
   566
val read_terms           = gen_read (read_terms_thy true) map false false;
wenzelm@19143
   567
fun read_props schematic = gen_read (read_props_thy true) map false schematic;
wenzelm@5819
   568
wenzelm@10554
   569
end;
wenzelm@10554
   570
wenzelm@5819
   571
wenzelm@5819
   572
(* certify terms *)
wenzelm@5819
   573
wenzelm@19371
   574
val test = ref (NONE: (context * term) option);
wenzelm@19371
   575
wenzelm@10554
   576
local
wenzelm@10554
   577
wenzelm@18971
   578
fun gen_cert prop pattern schematic ctxt t = t
wenzelm@19371
   579
  |> certify_consts ctxt
wenzelm@19001
   580
  |> (if pattern then I else expand_binds ctxt schematic)
wenzelm@19371
   581
  |> (fn t' => #1 (Sign.certify' false prop (pp ctxt) (consts_of ctxt) (theory_of ctxt) t')
wenzelm@18678
   582
    handle TYPE (msg, _, _) => error msg
wenzelm@18678
   583
      | TERM (msg, _) => error msg);
wenzelm@16501
   584
wenzelm@10554
   585
in
wenzelm@8096
   586
wenzelm@18971
   587
val cert_term = gen_cert false false false;
wenzelm@18971
   588
val cert_prop = gen_cert true false false;
wenzelm@18971
   589
val cert_props = map oo gen_cert true false;
wenzelm@10554
   590
wenzelm@18971
   591
fun cert_term_pats _ = map o gen_cert false true false;
wenzelm@18971
   592
val cert_prop_pats = map o gen_cert true true false;
wenzelm@10554
   593
wenzelm@10554
   594
end;
wenzelm@5819
   595
wenzelm@5819
   596
wenzelm@5819
   597
(* declare terms *)
wenzelm@5819
   598
wenzelm@10381
   599
local
wenzelm@10381
   600
wenzelm@16861
   601
val ins_types = fold_aterms
wenzelm@17412
   602
  (fn Free (x, T) => Vartab.update ((x, ~1), T)
wenzelm@17412
   603
    | Var v => Vartab.update v
wenzelm@16861
   604
    | _ => I);
wenzelm@5819
   605
wenzelm@16861
   606
val ins_sorts = fold_types (fold_atyps
wenzelm@19079
   607
  (fn TFree (x, S) => Vartab.update ((x, ~1), S)
wenzelm@19079
   608
    | TVar v => Vartab.update v
wenzelm@16861
   609
    | _ => I));
wenzelm@5819
   610
wenzelm@16861
   611
val ins_used = fold_term_types (fn t =>
wenzelm@16861
   612
  fold_atyps (fn TFree (x, _) => insert (op =) x | _ => I));
wenzelm@12291
   613
wenzelm@16861
   614
val ins_occs = fold_term_types (fn t =>
wenzelm@18953
   615
  fold_atyps (fn TFree (x, _) => Symtab.update_list (x, t) | _ => I));
wenzelm@5819
   616
wenzelm@16861
   617
fun ins_skolem def_ty = fold_rev (fn (x, x') =>
wenzelm@16861
   618
  (case def_ty x' of
wenzelm@17412
   619
    SOME T => Vartab.update ((x, ~1), T)
wenzelm@16861
   620
  | NONE => I));
wenzelm@5994
   621
wenzelm@16031
   622
in
wenzelm@16031
   623
wenzelm@19079
   624
fun declare_syntax t = map_defaults (fn (types, sorts, used, occ) =>
wenzelm@19079
   625
 (ins_types t types,
wenzelm@19079
   626
  ins_sorts t sorts,
wenzelm@19079
   627
  ins_used t used,
wenzelm@19079
   628
  occ));
wenzelm@10381
   629
wenzelm@19001
   630
fun declare_var (x, opt_T, mx) ctxt =
wenzelm@19001
   631
  let val T = (case opt_T of SOME T => T | NONE => TypeInfer.mixfixT mx)
wenzelm@19001
   632
  in ((x, T, mx), ctxt |> declare_syntax (Free (x, T))) end;
wenzelm@18672
   633
wenzelm@16540
   634
fun declare_term t ctxt =
wenzelm@16031
   635
  ctxt
wenzelm@18672
   636
  |> declare_syntax t
wenzelm@12291
   637
  |> map_defaults (fn (types, sorts, used, occ) =>
wenzelm@19079
   638
     (ins_skolem (fn x => Vartab.lookup types (x, ~1)) (fixes_of ctxt) types,
wenzelm@19079
   639
      sorts,
wenzelm@19079
   640
      used,
wenzelm@19079
   641
      ins_occs t occ));
wenzelm@5819
   642
wenzelm@18770
   643
end;
wenzelm@18770
   644
wenzelm@18770
   645
wenzelm@18770
   646
(* inferred types of parameters *)
wenzelm@18770
   647
wenzelm@18770
   648
fun infer_type ctxt x =
wenzelm@18770
   649
  (case try (fn () =>
wenzelm@18971
   650
      Sign.infer_types (pp ctxt) (theory_of ctxt) (consts_of ctxt) (def_type ctxt false)
wenzelm@18971
   651
        (def_sort ctxt) (used_types ctxt) true ([Free (x, dummyT)], TypeInfer.logicT)) () of
wenzelm@18770
   652
    SOME (Free (_, T), _) => T
wenzelm@18770
   653
  | _ => error ("Failed to infer type of fixed variable " ^ quote x));
wenzelm@18770
   654
wenzelm@18770
   655
fun inferred_param x ctxt =
wenzelm@18619
   656
  let val T = infer_type ctxt x
wenzelm@19019
   657
  in ((x, T), ctxt |> declare_syntax (Free (x, T))) end;
wenzelm@18619
   658
wenzelm@18770
   659
fun inferred_fixes ctxt =
wenzelm@18770
   660
  fold_map inferred_param (rev (fixed_names_of ctxt)) ctxt;
wenzelm@5819
   661
wenzelm@5819
   662
wenzelm@15703
   663
(* type and constant names *)
wenzelm@15703
   664
wenzelm@15703
   665
fun read_tyname ctxt c =
wenzelm@18340
   666
  if member (op =) (used_types ctxt) c then
wenzelm@18187
   667
    TFree (c, the_default (Sign.defaultS (theory_of ctxt)) (def_sort ctxt (c, ~1)))
wenzelm@16458
   668
  else Sign.read_tyname (theory_of ctxt) c;
wenzelm@15703
   669
wenzelm@15703
   670
fun read_const ctxt c =
wenzelm@15703
   671
  (case lookup_skolem ctxt c of
wenzelm@15703
   672
    SOME c' => Free (c', dummyT)
wenzelm@18971
   673
  | NONE => Consts.read_const (consts_of ctxt) c);
wenzelm@15703
   674
wenzelm@15703
   675
wenzelm@19019
   676
(* renaming term/type frees *)
wenzelm@19019
   677
wenzelm@19019
   678
fun rename_frees ctxt ts frees =
wenzelm@19019
   679
  let
wenzelm@19019
   680
    val (types, sorts, _, _) = defaults_of (ctxt |> fold declare_syntax ts);
wenzelm@19019
   681
    fun rename (x, X) xs =
wenzelm@19019
   682
      let
wenzelm@19274
   683
        fun used y = y = "" orelse y = "'" orelse member (op =) xs y orelse
wenzelm@19019
   684
          Vartab.defined types (y, ~1) orelse Vartab.defined sorts (y, ~1);
wenzelm@19019
   685
        val x' = Term.variant_name used x;
wenzelm@19019
   686
      in ((x', X), x' :: xs) end;
wenzelm@19019
   687
  in #1 (fold_map rename frees []) end;
wenzelm@19019
   688
wenzelm@19019
   689
wenzelm@8616
   690
wenzelm@8616
   691
(** Hindley-Milner polymorphism **)
wenzelm@8616
   692
wenzelm@7925
   693
(* warn_extra_tfrees *)
wenzelm@7925
   694
wenzelm@16540
   695
fun warn_extra_tfrees ctxt1 ctxt2 =
wenzelm@12130
   696
  let
wenzelm@17451
   697
    fun occs_typ a (Type (_, Ts)) = exists (occs_typ a) Ts
wenzelm@17451
   698
      | occs_typ a (TFree (b, _)) = a = b
wenzelm@17451
   699
      | occs_typ _ (TVar _) = false;
wenzelm@17451
   700
    fun occs_free a (Free (x, _)) =
wenzelm@17451
   701
          (case def_type ctxt1 false (x, ~1) of
wenzelm@17451
   702
            SOME T => if occs_typ a T then I else cons (a, x)
wenzelm@17451
   703
          | NONE => cons (a, x))
wenzelm@17451
   704
      | occs_free _ _ = I;
wenzelm@8616
   705
wenzelm@17451
   706
    val occs1 = type_occs_of ctxt1 and occs2 = type_occs_of ctxt2;
wenzelm@17451
   707
    val extras = Symtab.fold (fn (a, ts) =>
wenzelm@17451
   708
      if Symtab.defined occs1 a then I else fold (occs_free a) ts) occs2 [];
wenzelm@18428
   709
    val tfrees = map #1 extras |> sort_distinct string_ord;
wenzelm@18428
   710
    val frees = map #2 extras |> sort_distinct string_ord;
wenzelm@12130
   711
  in
wenzelm@12130
   712
    if null extras then ()
wenzelm@17451
   713
    else warning ("Introduced fixed type variable(s): " ^ commas tfrees ^ " in " ^
wenzelm@17860
   714
      space_implode " or " (map (string_of_term ctxt2 o Syntax.free) frees));
wenzelm@12130
   715
    ctxt2
wenzelm@12130
   716
  end;
wenzelm@8616
   717
wenzelm@8616
   718
wenzelm@8616
   719
(* generalize type variables *)
wenzelm@8616
   720
wenzelm@12550
   721
fun generalize_tfrees inner outer =
wenzelm@8616
   722
  let
wenzelm@19310
   723
    val extra_fixes = subtract (op =) (fixed_names_of outer) (fixed_names_of inner);
wenzelm@18340
   724
    fun still_fixed (Free (x, _)) = not (member (op =) extra_fixes x)
wenzelm@8616
   725
      | still_fixed _ = false;
wenzelm@16540
   726
    val occs_inner = type_occs_of inner;
wenzelm@16540
   727
    val occs_outer = type_occs_of outer;
wenzelm@16031
   728
    fun add a gen =
wenzelm@16894
   729
      if Symtab.defined occs_outer a orelse
wenzelm@18953
   730
        exists still_fixed (Symtab.lookup_list occs_inner a)
wenzelm@8616
   731
      then gen else a :: gen;
wenzelm@16031
   732
  in fn tfrees => fold add tfrees [] end;
wenzelm@8616
   733
wenzelm@12550
   734
fun generalize inner outer ts =
wenzelm@8616
   735
  let
wenzelm@18187
   736
    val tfrees = generalize_tfrees inner outer (map #1 (fold Term.add_tfrees ts []));
wenzelm@18340
   737
    fun gen (x, S) = if member (op =) tfrees x then TVar ((x, 0), S) else TFree (x, S);
wenzelm@12550
   738
  in map (Term.map_term_types (Term.map_type_tfree gen)) ts end;
wenzelm@8616
   739
wenzelm@8616
   740
wenzelm@19001
   741
(* polymorphic terms *)
wenzelm@19001
   742
wenzelm@19270
   743
fun monomorphic ctxt ts =
wenzelm@19270
   744
  let
wenzelm@19270
   745
    val tvars = fold Term.add_tvars ts [];
wenzelm@19274
   746
    val tfrees = map TFree (rename_frees ctxt ts (map (pair "'" o #2) tvars));
wenzelm@19270
   747
    val specialize = Term.instantiate ((tvars ~~ tfrees), []);
wenzelm@19270
   748
  in map specialize ts end;
wenzelm@19270
   749
wenzelm@19001
   750
fun polymorphic ctxt ts =
wenzelm@19001
   751
  generalize (ctxt |> fold declare_term ts) ctxt ts;
wenzelm@19001
   752
wenzelm@19270
   753
fun hidden_polymorphism t T =
wenzelm@19270
   754
  let
wenzelm@19270
   755
    val tvarsT = Term.add_tvarsT T [];
wenzelm@19270
   756
    val extra_tvars = Term.fold_types (Term.fold_atyps
wenzelm@19270
   757
      (fn TVar v => if member (op =) tvarsT v then I else insert (op =) v | _ => I)) t [];
wenzelm@19270
   758
  in extra_tvars end;
wenzelm@19001
   759
wenzelm@19001
   760
wenzelm@9553
   761
wenzelm@9553
   762
(** export theorems **)
wenzelm@8616
   763
wenzelm@18042
   764
fun common_exports is_goal inner outer =
wenzelm@8616
   765
  let
wenzelm@12550
   766
    val gen = generalize_tfrees inner outer;
wenzelm@19310
   767
    val fixes = subtract (op =) (fixed_names_of outer) (fixed_names_of inner);
wenzelm@12057
   768
    val asms = Library.drop (length (assumptions_of outer), assumptions_of inner);
wenzelm@11816
   769
    val exp_asms = map (fn (cprops, exp) => exp is_goal cprops) asms;
wenzelm@16948
   770
  in
wenzelm@18255
   771
    Goal.norm_hhf_protect
wenzelm@16948
   772
    #> Seq.EVERY (rev exp_asms)
wenzelm@16948
   773
    #> Seq.map (fn rule =>
wenzelm@11816
   774
      let
wenzelm@16992
   775
        val thy = Thm.theory_of_thm rule;
wenzelm@16992
   776
        val prop = Thm.full_prop_of rule;
wenzelm@18152
   777
        val frees = map (Thm.cterm_of thy) (List.mapPartial (Term.find_free prop) fixes);
wenzelm@12550
   778
        val tfrees = gen (Term.add_term_tfree_names (prop, []));
wenzelm@11816
   779
      in
wenzelm@11816
   780
        rule
wenzelm@11816
   781
        |> Drule.forall_intr_list frees
wenzelm@18255
   782
        |> Goal.norm_hhf_protect
wenzelm@18138
   783
        |> Drule.tvars_intr_list tfrees |> #2
wenzelm@11816
   784
      end)
wenzelm@11816
   785
  end;
wenzelm@8616
   786
wenzelm@18785
   787
fun export_standard inner outer =
wenzelm@18122
   788
  let val exp = common_exports false inner outer in
wenzelm@13378
   789
    fn th =>
wenzelm@18122
   790
      (case Seq.pull (exp th) of
skalberg@15531
   791
        SOME (th', _) => th' |> Drule.local_standard
wenzelm@16850
   792
      | NONE => sys_error "Failed to export theorem")
wenzelm@13378
   793
  end;
wenzelm@12704
   794
wenzelm@18122
   795
val exports = common_exports false;
wenzelm@18122
   796
val goal_exports = common_exports true;
wenzelm@7925
   797
wenzelm@5819
   798
wenzelm@15758
   799
wenzelm@5819
   800
(** bindings **)
wenzelm@5819
   801
wenzelm@15758
   802
(* delete_update_binds *)
wenzelm@15758
   803
wenzelm@15758
   804
local
wenzelm@5819
   805
wenzelm@18672
   806
val del_bind = map_binds o Vartab.delete_safe;
wenzelm@7606
   807
wenzelm@15758
   808
fun upd_bind ((x, i), t) =
wenzelm@8616
   809
  let
wenzelm@8616
   810
    val T = Term.fastype_of t;
wenzelm@8616
   811
    val t' =
wenzelm@19270
   812
      if null (hidden_polymorphism t T) then t
wenzelm@8637
   813
      else Var ((x ^ "_has_extra_type_vars_on_rhs", i), T);
wenzelm@18953
   814
  in declare_term t' #> map_binds (Vartab.update ((x, i), (T, t'))) end;
wenzelm@5819
   815
wenzelm@15758
   816
fun del_upd_bind (xi, NONE) = del_bind xi
wenzelm@15758
   817
  | del_upd_bind (xi, SOME t) = upd_bind (xi, t);
wenzelm@7606
   818
wenzelm@15758
   819
in
wenzelm@15758
   820
wenzelm@15758
   821
val delete_update_binds = fold del_upd_bind;
wenzelm@15758
   822
wenzelm@15758
   823
end;
wenzelm@7606
   824
wenzelm@5819
   825
wenzelm@8096
   826
(* simult_matches *)
wenzelm@8096
   827
wenzelm@8616
   828
fun simult_matches ctxt [] = []
wenzelm@8616
   829
  | simult_matches ctxt pairs =
wenzelm@8096
   830
      let
wenzelm@18678
   831
        fun fail () = error "Pattern match failed!";
wenzelm@10554
   832
wenzelm@16031
   833
        val maxidx = fold (fn (t1, t2) => fn i =>
wenzelm@16031
   834
          Int.max (Int.max (Term.maxidx_of_term t1, Term.maxidx_of_term t2), i)) pairs ~1;
wenzelm@16458
   835
        val envs = Unify.smash_unifiers (theory_of ctxt, Envir.empty maxidx,
wenzelm@10554
   836
          map swap pairs);    (*prefer assignment of variables from patterns*)
wenzelm@10554
   837
        val env =
wenzelm@8096
   838
          (case Seq.pull envs of
skalberg@15531
   839
            NONE => fail ()
skalberg@15531
   840
          | SOME (env, _) => env);    (*ignore further results*)
wenzelm@12309
   841
        val domain =
wenzelm@12309
   842
          filter_out Term.is_replaced_dummy_pattern (map #1 (Drule.vars_of_terms (map #1 pairs)));
wenzelm@10554
   843
        val _ =    (*may not assign variables from text*)
wenzelm@12309
   844
          if null (map #1 (Envir.alist_of env) inter (map #1 (Drule.vars_of_terms (map #2 pairs))))
wenzelm@12309
   845
          then () else fail ();
wenzelm@16948
   846
        fun norm_bind (xi, (_, t)) =
wenzelm@18310
   847
          if member (op =) domain xi then SOME (xi, Envir.norm_term env t) else NONE;
skalberg@15570
   848
      in List.mapPartial norm_bind (Envir.alist_of env) end;
wenzelm@8096
   849
wenzelm@8096
   850
wenzelm@8096
   851
(* add_binds(_i) *)
wenzelm@5819
   852
wenzelm@7925
   853
local
wenzelm@7925
   854
wenzelm@16031
   855
fun gen_bind prep (xi as (x, _), raw_t) ctxt =
skalberg@15570
   856
  ctxt |> delete_update_binds [(xi, Option.map (prep ctxt) raw_t)];
wenzelm@5819
   857
wenzelm@10810
   858
in
wenzelm@10810
   859
skalberg@15531
   860
fun drop_schematic (b as (xi, SOME t)) = if null (Term.term_vars t) then b else (xi, NONE)
wenzelm@10554
   861
  | drop_schematic b = b;
wenzelm@10554
   862
wenzelm@16031
   863
val add_binds = fold (gen_bind read_term);
wenzelm@16031
   864
val add_binds_i = fold (gen_bind cert_term);
wenzelm@8616
   865
wenzelm@16458
   866
fun auto_bind f ts ctxt = ctxt |> add_binds_i (map drop_schematic (f (theory_of ctxt) ts));
wenzelm@12147
   867
val auto_bind_goal = auto_bind AutoBind.goal;
wenzelm@12147
   868
val auto_bind_facts = auto_bind AutoBind.facts;
wenzelm@7925
   869
wenzelm@7925
   870
end;
wenzelm@5819
   871
wenzelm@5819
   872
wenzelm@8096
   873
(* match_bind(_i) *)
wenzelm@5819
   874
wenzelm@8096
   875
local
wenzelm@8096
   876
wenzelm@17860
   877
fun prep_bind prep_pats (raw_pats, t) ctxt =
wenzelm@5819
   878
  let
wenzelm@8096
   879
    val ctxt' = declare_term t ctxt;
wenzelm@8096
   880
    val pats = prep_pats (fastype_of t) ctxt' raw_pats;
wenzelm@8616
   881
    val binds = simult_matches ctxt' (map (rpair t) pats);
wenzelm@17860
   882
  in (binds, ctxt') end;
wenzelm@7670
   883
wenzelm@10465
   884
fun gen_binds prep_terms prep_pats gen raw_binds ctxt =
wenzelm@8616
   885
  let
wenzelm@10465
   886
    val ts = prep_terms ctxt (map snd raw_binds);
wenzelm@17860
   887
    val (binds, ctxt') =
wenzelm@17860
   888
      apfst List.concat (fold_map (prep_bind prep_pats) (map fst raw_binds ~~ ts) ctxt);
wenzelm@8616
   889
    val binds' =
wenzelm@12550
   890
      if gen then map #1 binds ~~ generalize ctxt' ctxt (map #2 binds)
wenzelm@8616
   891
      else binds;
skalberg@15531
   892
    val binds'' = map (apsnd SOME) binds';
wenzelm@18310
   893
    val ctxt'' =
wenzelm@18310
   894
      warn_extra_tfrees ctxt
wenzelm@18310
   895
       (if gen then
wenzelm@18310
   896
          ctxt (*sic!*) |> fold declare_term (map #2 binds') |> add_binds_i binds''
wenzelm@18310
   897
        else ctxt' |> add_binds_i binds'');
wenzelm@18310
   898
  in (ts, ctxt'') end;
wenzelm@8096
   899
wenzelm@8096
   900
in
wenzelm@5935
   901
wenzelm@10465
   902
val match_bind = gen_binds read_terms read_term_pats;
wenzelm@10465
   903
val match_bind_i = gen_binds (map o cert_term) cert_term_pats;
wenzelm@8096
   904
wenzelm@8096
   905
end;
wenzelm@5935
   906
wenzelm@5935
   907
wenzelm@10465
   908
(* propositions with patterns *)
wenzelm@5935
   909
wenzelm@10465
   910
local
wenzelm@8096
   911
wenzelm@10554
   912
fun prep_propp schematic prep_props prep_pats (context, args) =
wenzelm@10465
   913
  let
wenzelm@17860
   914
    fun prep (_, (raw_pats1, raw_pats2)) (ctxt, prop :: props) =
wenzelm@10465
   915
          let
wenzelm@10465
   916
            val ctxt' = declare_term prop ctxt;
wenzelm@10465
   917
            val pats = prep_pats ctxt' (raw_pats1 @ raw_pats2);    (*simultaneous type inference!*)
wenzelm@19019
   918
          in ((prop, chop (length raw_pats1) pats), (ctxt', props)) end
wenzelm@17860
   919
      | prep _ _ = sys_error "prep_propp";
wenzelm@17860
   920
    val (propp, (context', _)) = (fold_map o fold_map) prep args
wenzelm@17860
   921
      (context, prep_props schematic context (List.concat (map (map fst) args)));
wenzelm@10465
   922
  in (context', propp) end;
wenzelm@5935
   923
wenzelm@10465
   924
fun matches ctxt (prop, (pats1, pats2)) =
wenzelm@10465
   925
  simult_matches ctxt (map (rpair prop) pats1 @ map (rpair (Logic.strip_imp_concl prop)) pats2);
wenzelm@8096
   926
wenzelm@10465
   927
fun gen_bind_propp prepp (ctxt, raw_args) =
wenzelm@8096
   928
  let
wenzelm@10465
   929
    val (ctxt', args) = prepp (ctxt, raw_args);
skalberg@15570
   930
    val binds = List.concat (List.concat (map (map (matches ctxt')) args));
wenzelm@10465
   931
    val propss = map (map #1) args;
wenzelm@8616
   932
wenzelm@10554
   933
    (*generalize result: context evaluated now, binds added later*)
wenzelm@8616
   934
    val gen = generalize ctxt' ctxt;
skalberg@15531
   935
    fun gen_binds c = c |> add_binds_i (map #1 binds ~~ map SOME (gen (map #2 binds)));
skalberg@15531
   936
  in (ctxt' |> add_binds_i (map (apsnd SOME) binds), (propss, gen_binds)) end;
wenzelm@8096
   937
wenzelm@10465
   938
in
wenzelm@10465
   939
wenzelm@11925
   940
val read_propp = prep_propp false read_props read_prop_pats;
wenzelm@11925
   941
val cert_propp = prep_propp false cert_props cert_prop_pats;
wenzelm@10554
   942
val read_propp_schematic = prep_propp true read_props read_prop_pats;
wenzelm@10554
   943
val cert_propp_schematic = prep_propp true cert_props cert_prop_pats;
wenzelm@10554
   944
wenzelm@11925
   945
val bind_propp = gen_bind_propp read_propp;
wenzelm@11925
   946
val bind_propp_i = gen_bind_propp cert_propp;
wenzelm@11925
   947
val bind_propp_schematic = gen_bind_propp read_propp_schematic;
wenzelm@10554
   948
val bind_propp_schematic_i = gen_bind_propp cert_propp_schematic;
wenzelm@6789
   949
wenzelm@10465
   950
end;
wenzelm@10465
   951
wenzelm@6789
   952
wenzelm@5819
   953
wenzelm@5819
   954
(** theorems **)
wenzelm@5819
   955
wenzelm@18042
   956
(* fact_tac *)
wenzelm@18042
   957
wenzelm@18122
   958
fun comp_incr_tac [] _ st = no_tac st
wenzelm@18122
   959
  | comp_incr_tac (th :: ths) i st =
wenzelm@18122
   960
      (Goal.compose_hhf_tac (Drule.incr_indexes st th) i APPEND comp_incr_tac ths i) st;
wenzelm@18042
   961
wenzelm@18122
   962
fun fact_tac facts = Tactic.norm_hhf_tac THEN' comp_incr_tac facts;
wenzelm@18122
   963
wenzelm@18122
   964
fun some_fact_tac ctxt = SUBGOAL (fn (goal, i) =>
wenzelm@18042
   965
  let
wenzelm@19001
   966
    val index = fact_index_of ctxt;
wenzelm@18042
   967
    val facts = FactIndex.could_unify index (Term.strip_all_body goal);
wenzelm@18042
   968
  in fact_tac facts i end);
wenzelm@18042
   969
wenzelm@18042
   970
wenzelm@6091
   971
(* get_thm(s) *)
wenzelm@5819
   972
wenzelm@18042
   973
fun retrieve_thms _ pick ctxt (Fact s) =
wenzelm@16501
   974
      let
wenzelm@18042
   975
        val thy = theory_of ctxt;
wenzelm@18042
   976
        val th = Goal.prove thy [] [] (read_prop ctxt s) (K (ALLGOALS (some_fact_tac ctxt)))
wenzelm@18678
   977
          handle ERROR msg => cat_error msg "Failed to retrieve literal fact.";
wenzelm@18042
   978
      in pick "" [th] end
wenzelm@18042
   979
  | retrieve_thms from_thy pick ctxt xthmref =
wenzelm@18042
   980
      let
wenzelm@18042
   981
        val thy = theory_of ctxt;
wenzelm@19001
   982
        val (space, tab) = #1 (thms_of ctxt);
wenzelm@16501
   983
        val thmref = PureThy.map_name_of_thmref (NameSpace.intern space) xthmref;
wenzelm@16501
   984
        val name = PureThy.name_of_thmref thmref;
wenzelm@16501
   985
      in
wenzelm@17412
   986
        (case Symtab.lookup tab name of
wenzelm@16540
   987
          SOME ths => map (Thm.transfer thy) (PureThy.select_thm thmref ths)
wenzelm@16540
   988
        | NONE => from_thy thy xthmref) |> pick name
wenzelm@18042
   989
      end;
wenzelm@5819
   990
wenzelm@9566
   991
val get_thm = retrieve_thms PureThy.get_thms PureThy.single_thm;
wenzelm@9566
   992
val get_thm_closure = retrieve_thms PureThy.get_thms_closure PureThy.single_thm;
wenzelm@9566
   993
val get_thms = retrieve_thms PureThy.get_thms (K I);
wenzelm@9566
   994
val get_thms_closure = retrieve_thms PureThy.get_thms_closure (K I);
wenzelm@5819
   995
wenzelm@5819
   996
wenzelm@16031
   997
(* valid_thms *)
wenzelm@16031
   998
wenzelm@16031
   999
fun valid_thms ctxt (name, ths) =
wenzelm@18678
  1000
  (case try (fn () => get_thms ctxt (Name name)) () of
wenzelm@16031
  1001
    NONE => false
wenzelm@16147
  1002
  | SOME ths' => Thm.eq_thms (ths, ths'));
wenzelm@16031
  1003
wenzelm@16031
  1004
wenzelm@16031
  1005
(* lthms_containing *)
wenzelm@16031
  1006
wenzelm@16031
  1007
fun lthms_containing ctxt spec =
wenzelm@16031
  1008
  FactIndex.find (fact_index_of ctxt) spec
wenzelm@18043
  1009
  |> map ((not o valid_thms ctxt) ? apfst (fn name =>
wenzelm@18042
  1010
    NameSpace.hidden (if name = "" then "unnamed" else name)));
wenzelm@16031
  1011
wenzelm@16031
  1012
wenzelm@13425
  1013
(* name space operations *)
wenzelm@12309
  1014
wenzelm@19001
  1015
val extern_thm = NameSpace.extern o #1 o #1 o thms_of;
wenzelm@12309
  1016
wenzelm@19062
  1017
val no_base_names   = map_naming NameSpace.no_base_names;
wenzelm@16147
  1018
val qualified_names = map_naming NameSpace.qualified_names;
wenzelm@19062
  1019
val sticky_prefix   = map_naming o NameSpace.sticky_prefix;
wenzelm@19062
  1020
val restore_naming  = map_naming o K o naming_of;
wenzelm@12309
  1021
wenzelm@19001
  1022
fun hide_thms fully names = map_thms (fn ((space, tab), index) =>
wenzelm@19001
  1023
  ((fold (NameSpace.hide fully) names space, tab), index));
wenzelm@13425
  1024
wenzelm@12309
  1025
wenzelm@17360
  1026
(* put_thms *)
wenzelm@5819
  1027
wenzelm@19079
  1028
fun put_thms _ ("", NONE) ctxt = ctxt
wenzelm@19143
  1029
  | put_thms do_index ("", SOME ths) ctxt = ctxt |> map_thms (fn (facts, index) =>
wenzelm@18672
  1030
      let
wenzelm@19143
  1031
        val index' = FactIndex.add_local do_index (is_known ctxt) ("", ths) index;
wenzelm@19001
  1032
      in (facts, index') end)
wenzelm@19079
  1033
  | put_thms _ (bname, NONE) ctxt = ctxt |> map_thms (fn ((space, tab), index) =>
wenzelm@18672
  1034
      let
wenzelm@19001
  1035
        val name = NameSpace.full (naming_of ctxt) bname;
wenzelm@18672
  1036
        val tab' = Symtab.delete_safe name tab;
wenzelm@19001
  1037
      in ((space, tab'), index) end)
wenzelm@19079
  1038
  | put_thms do_index (bname, SOME ths) ctxt = ctxt |> map_thms (fn ((space, tab), index) =>
wenzelm@18672
  1039
      let
wenzelm@19001
  1040
        val name = NameSpace.full (naming_of ctxt) bname;
wenzelm@19001
  1041
        val space' = NameSpace.declare (naming_of ctxt) name space;
wenzelm@18672
  1042
        val tab' = Symtab.update (name, ths) tab;
wenzelm@19143
  1043
        val index' = FactIndex.add_local do_index (is_known ctxt) (name, ths) index;
wenzelm@19001
  1044
      in ((space', tab'), index') end);
wenzelm@5819
  1045
wenzelm@19079
  1046
fun put_thms_internal thms ctxt =
wenzelm@19079
  1047
  ctxt |> map_naming (K local_naming) |> put_thms false thms |> restore_naming ctxt;
wenzelm@19079
  1048
wenzelm@7606
  1049
wenzelm@14564
  1050
(* note_thmss *)
wenzelm@5819
  1051
wenzelm@12711
  1052
local
wenzelm@16147
  1053
wenzelm@17860
  1054
fun gen_note_thmss get = fold_map (fn ((name, more_attrs), ths_attrs) => fn ctxt =>
wenzelm@5819
  1055
  let
wenzelm@17360
  1056
    fun app (th, attrs) (ct, ths) =
wenzelm@18728
  1057
      let val (ct', th') = foldl_map (Thm.proof_attributes (attrs @ more_attrs)) (ct, get ctxt th)
wenzelm@12711
  1058
      in (ct', th' :: ths) end;
wenzelm@17360
  1059
    val (ctxt', rev_thms) = fold app ths_attrs (ctxt, []);
skalberg@15570
  1060
    val thms = List.concat (rev rev_thms);
wenzelm@19079
  1061
  in ((name, thms), ctxt' |> put_thms true (name, SOME thms)) end);
wenzelm@12711
  1062
wenzelm@12711
  1063
in
wenzelm@12711
  1064
wenzelm@16147
  1065
val note_thmss = gen_note_thmss get_thms;
wenzelm@16147
  1066
val note_thmss_i = gen_note_thmss (K I);
ballarin@15696
  1067
ballarin@15696
  1068
val note_thmss_accesses = gen_note_thmss get_thms;
ballarin@15696
  1069
val note_thmss_accesses_i = gen_note_thmss (K I);
wenzelm@12711
  1070
wenzelm@12711
  1071
end;
wenzelm@9196
  1072
wenzelm@5819
  1073
wenzelm@5819
  1074
wenzelm@18672
  1075
(** parameters **)
wenzelm@17360
  1076
wenzelm@8096
  1077
(* variables *)
wenzelm@8096
  1078
wenzelm@10381
  1079
local
wenzelm@10381
  1080
wenzelm@18672
  1081
fun prep_vars prep_typ internal legacy =
wenzelm@18672
  1082
  fold_map (fn (raw_x, raw_T, raw_mx) => fn ctxt =>
wenzelm@18672
  1083
    let
wenzelm@19371
  1084
      val (x, mx) = Syntax.const_mixfix raw_x raw_mx;
wenzelm@18672
  1085
      val _ =
wenzelm@18678
  1086
        if not legacy andalso not (Syntax.is_identifier (no_skolem internal x)) then
wenzelm@18678
  1087
          error ("Illegal variable name: " ^ quote x)
wenzelm@18672
  1088
        else ();
wenzelm@12504
  1089
wenzelm@18672
  1090
      fun cond_tvars T =
wenzelm@18672
  1091
        if internal then T
wenzelm@18678
  1092
        else Type.no_tvars T handle TYPE (msg, _, _) => error msg;
wenzelm@18672
  1093
      val opt_T = Option.map (cond_tvars o prep_typ ctxt) raw_T;
wenzelm@18672
  1094
      val var = (x, opt_T, mx);
wenzelm@19001
  1095
    in (var, ctxt |> declare_var var |> #2) end);
wenzelm@8096
  1096
wenzelm@10381
  1097
in
wenzelm@10381
  1098
wenzelm@18672
  1099
val read_vars        = prep_vars read_typ false false;
wenzelm@18672
  1100
val cert_vars        = prep_vars cert_typ true false;
wenzelm@18672
  1101
val read_vars_legacy = prep_vars read_typ true true;
wenzelm@18672
  1102
val cert_vars_legacy = prep_vars cert_typ true true;
wenzelm@8096
  1103
wenzelm@10381
  1104
end;
wenzelm@10381
  1105
wenzelm@8096
  1106
wenzelm@19001
  1107
(* abbreviations *)
wenzelm@19001
  1108
wenzelm@19371
  1109
val expand_abbrevs = map_consts o apsnd o Consts.expand_abbrevs;
wenzelm@19371
  1110
wenzelm@19001
  1111
local
wenzelm@19001
  1112
wenzelm@19371
  1113
fun gen_abbrevs prep_vars prep_term (mode, inout) = fold (fn (raw_c, raw_t, raw_mx) => fn ctxt =>
wenzelm@19001
  1114
  let
wenzelm@19371
  1115
    val thy = theory_of ctxt;
wenzelm@19371
  1116
    val naming = naming_of ctxt
wenzelm@19371
  1117
      |> K (mode <> "") ? (NameSpace.add_path mode #> NameSpace.no_base_names);
wenzelm@19371
  1118
wenzelm@19001
  1119
    val ([(c, _, mx)], _) = prep_vars [(raw_c, NONE, raw_mx)] ctxt;
wenzelm@19371
  1120
    val (c', b) = Syntax.mixfix_const (NameSpace.full naming 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@19371
  1129
    |> map_consts (apsnd (Consts.abbreviate (pp ctxt) (tsig_of ctxt) naming mode ((c, t), b)))
wenzelm@19371
  1130
    |> map_syntax (LocalSyntax.add_syntax thy (mode, inout) [(false, (c', T, mx))])
wenzelm@19001
  1131
  end);
wenzelm@19001
  1132
wenzelm@19001
  1133
in
wenzelm@19001
  1134
wenzelm@19001
  1135
val add_abbrevs = gen_abbrevs read_vars read_term;
wenzelm@19001
  1136
val add_abbrevs_i = gen_abbrevs cert_vars cert_term;
wenzelm@19001
  1137
wenzelm@19001
  1138
end;
wenzelm@19001
  1139
wenzelm@19001
  1140
wenzelm@18672
  1141
(* fixes *)
wenzelm@5819
  1142
wenzelm@8096
  1143
local
wenzelm@8096
  1144
wenzelm@19001
  1145
fun prep_mixfix (x, T, mx) =
wenzelm@19019
  1146
  if mx <> NoSyn andalso mx <> Structure andalso
wenzelm@19019
  1147
      (can Syntax.dest_internal x orelse can Syntax.dest_skolem x) then
wenzelm@19001
  1148
    error ("Illegal mixfix syntax for internal/skolem constant " ^ quote x)
wenzelm@19001
  1149
  else (true, (x, T, mx));
wenzelm@19001
  1150
wenzelm@18672
  1151
fun no_dups _ [] = ()
wenzelm@18900
  1152
  | no_dups ctxt dups = error ("Duplicate fixed variable(s): " ^ commas_quote dups);
wenzelm@11925
  1153
wenzelm@18844
  1154
fun gen_fixes prep raw_vars ctxt =
wenzelm@8096
  1155
  let
wenzelm@19371
  1156
    val thy = theory_of ctxt;
wenzelm@19371
  1157
wenzelm@18672
  1158
    val (ys, zs) = split_list (fixes_of ctxt);
wenzelm@18672
  1159
    val (vars, ctxt') = prep raw_vars ctxt;
wenzelm@12130
  1160
    val xs = map #1 vars;
wenzelm@18971
  1161
    val _ = no_dups ctxt (duplicates (op =) xs);
wenzelm@18672
  1162
    val xs' =
wenzelm@18672
  1163
      if is_body ctxt then Term.variantlist (map Syntax.skolem xs, zs)
wenzelm@18672
  1164
      else (no_dups ctxt (xs inter_string ys); no_dups ctxt (xs inter_string zs); xs);
wenzelm@8096
  1165
  in
wenzelm@18672
  1166
    ctxt'
wenzelm@18672
  1167
    |> map_fixes (fn (b, fixes) => (b, rev (xs ~~ xs') @ fixes))
wenzelm@19001
  1168
    |> fold_map declare_var (map2 (fn x' => fn (_, T, mx) => (x', T, mx)) xs' vars)
wenzelm@19371
  1169
    |-> (map_syntax o LocalSyntax.add_syntax thy Syntax.default_mode o map prep_mixfix)
wenzelm@18672
  1170
    |> pair xs'
wenzelm@8096
  1171
  end;
wenzelm@5819
  1172
wenzelm@8096
  1173
in
wenzelm@7679
  1174
wenzelm@18844
  1175
val add_fixes = gen_fixes read_vars;
wenzelm@18844
  1176
val add_fixes_i = gen_fixes cert_vars;
wenzelm@18844
  1177
val add_fixes_legacy = gen_fixes cert_vars_legacy;
wenzelm@8096
  1178
wenzelm@8096
  1179
end;
wenzelm@5819
  1180
wenzelm@18672
  1181
wenzelm@18844
  1182
(* invent fixes *)
wenzelm@18844
  1183
wenzelm@18844
  1184
fun invent_fixes xs ctxt =
wenzelm@18844
  1185
  ctxt
wenzelm@18844
  1186
  |> set_body true
wenzelm@18844
  1187
  |> add_fixes_i (map (fn x => (x, NONE, NoSyn)) xs)
wenzelm@18844
  1188
  ||> restore_body ctxt;
wenzelm@18844
  1189
wenzelm@18844
  1190
wenzelm@18672
  1191
(* fixes vs. frees *)
wenzelm@12016
  1192
wenzelm@18672
  1193
fun fix_frees t ctxt =
wenzelm@18672
  1194
  let
wenzelm@18672
  1195
    fun add (Free (x, T)) = if is_fixed ctxt x then I else insert (op =) (x, SOME T, NoSyn)
wenzelm@18672
  1196
      | add _ = I;
wenzelm@18672
  1197
    val fixes = rev (fold_aterms add t []);
wenzelm@18809
  1198
  in
wenzelm@18809
  1199
    ctxt
wenzelm@18809
  1200
    |> declare_term t
wenzelm@18809
  1201
    |> set_body false
wenzelm@18809
  1202
    |> (snd o add_fixes_i fixes)
wenzelm@18809
  1203
    |> restore_body ctxt
wenzelm@18809
  1204
  end;
wenzelm@6895
  1205
wenzelm@18672
  1206
fun auto_fixes (arg as (ctxt, (propss, x))) =
wenzelm@18672
  1207
  if is_body ctxt then arg
wenzelm@18672
  1208
  else ((fold o fold) fix_frees propss ctxt, (propss, x));
wenzelm@18672
  1209
wenzelm@18672
  1210
fun bind_fixes xs ctxt =
wenzelm@9291
  1211
  let
wenzelm@18672
  1212
    val (_, ctxt') = ctxt |> add_fixes_i (map (fn x => (x, NONE, NoSyn)) xs);
wenzelm@9291
  1213
    fun bind (t as Free (x, T)) =
wenzelm@18340
  1214
          if member (op =) xs x then
skalberg@15531
  1215
            (case lookup_skolem ctxt' x of SOME x' => Free (x', T) | NONE => t)
wenzelm@9291
  1216
          else t
wenzelm@9291
  1217
      | bind (t $ u) = bind t $ bind u
wenzelm@9291
  1218
      | bind (Abs (x, T, t)) = Abs (x, T, bind t)
wenzelm@9291
  1219
      | bind a = a;
wenzelm@18672
  1220
  in (bind, ctxt') end;
wenzelm@18672
  1221
wenzelm@9291
  1222
wenzelm@9291
  1223
wenzelm@18672
  1224
(** assumptions **)
wenzelm@18187
  1225
wenzelm@18672
  1226
(* generic assms *)
wenzelm@18187
  1227
wenzelm@18187
  1228
local
wenzelm@18187
  1229
wenzelm@18672
  1230
fun gen_assm ((name, attrs), props) ctxt =
wenzelm@18187
  1231
  let
wenzelm@18187
  1232
    val cprops = map (Thm.cterm_of (theory_of ctxt)) props;
wenzelm@18187
  1233
    val asms = map (Goal.norm_hhf o Thm.assume) cprops;
wenzelm@18187
  1234
wenzelm@18187
  1235
    val ths = map (fn th => ([th], [])) asms;
wenzelm@18187
  1236
    val ([(_, thms)], ctxt') =
wenzelm@18187
  1237
      ctxt
wenzelm@18187
  1238
      |> auto_bind_facts props
wenzelm@18187
  1239
      |> note_thmss_i [((name, attrs), ths)];
wenzelm@18187
  1240
  in ((cprops, (name, asms), (name, thms)), ctxt') end;
wenzelm@18187
  1241
wenzelm@18187
  1242
fun gen_assms prepp exp args ctxt =
wenzelm@18187
  1243
  let
wenzelm@18672
  1244
    val (propss, ctxt1) = swap (prepp (ctxt, map snd args));
wenzelm@18672
  1245
    val (results, ctxt2) = fold_map gen_assm (map fst args ~~ propss) ctxt1;
wenzelm@18187
  1246
wenzelm@18672
  1247
    val new_asms = List.concat (map #1 results);
wenzelm@18672
  1248
    val new_prems = map #2 results;
wenzelm@18809
  1249
    val ctxt3 = ctxt2
wenzelm@18809
  1250
      |> map_assms (fn (asms, prems) => (asms @ [(new_asms, exp)], prems @ new_prems))
wenzelm@18809
  1251
    val ctxt4 = ctxt3
wenzelm@19079
  1252
      |> put_thms_internal (AutoBind.premsN, SOME (prems_of ctxt3));
wenzelm@18672
  1253
  in (map #3 results, warn_extra_tfrees ctxt ctxt4) end;
wenzelm@18187
  1254
wenzelm@18187
  1255
in
wenzelm@18187
  1256
wenzelm@18672
  1257
val add_assms = gen_assms (apsnd #1 o bind_propp);
wenzelm@18672
  1258
val add_assms_i = gen_assms (apsnd #1 o bind_propp_i);
wenzelm@18187
  1259
wenzelm@18187
  1260
end;
wenzelm@18187
  1261
wenzelm@18187
  1262
wenzelm@18672
  1263
(* basic assumptions *)
wenzelm@18672
  1264
wenzelm@18879
  1265
(*
wenzelm@18879
  1266
    [A]
wenzelm@18971
  1267
     :
wenzelm@18879
  1268
     B
wenzelm@18879
  1269
  --------
wenzelm@18879
  1270
  #A ==> B
wenzelm@18879
  1271
*)
wenzelm@18672
  1272
fun assume_export true = Seq.single oo Drule.implies_intr_protected
wenzelm@18672
  1273
  | assume_export false = Seq.single oo Drule.implies_intr_list;
wenzelm@18672
  1274
wenzelm@18879
  1275
(*
wenzelm@18879
  1276
    [A]
wenzelm@18971
  1277
     :
wenzelm@18879
  1278
     B
wenzelm@18879
  1279
  -------
wenzelm@18879
  1280
  A ==> B
wenzelm@18879
  1281
*)
wenzelm@18672
  1282
fun presume_export _ = assume_export false;
wenzelm@18672
  1283
wenzelm@18672
  1284
wenzelm@18672
  1285
(* additional views *)
wenzelm@18672
  1286
wenzelm@18672
  1287
fun add_view outer view = map_assms (fn (asms, prems) =>
wenzelm@18672
  1288
  let
wenzelm@19019
  1289
    val (asms1, asms2) = chop (length (assumptions_of outer)) asms;
wenzelm@18672
  1290
    val asms' = asms1 @ [(view, assume_export)] @ asms2;
wenzelm@18672
  1291
  in (asms', prems) end);
wenzelm@18672
  1292
wenzelm@18785
  1293
fun export_view view inner outer = export_standard (add_view outer view inner) outer;
wenzelm@18672
  1294
wenzelm@18672
  1295
wenzelm@5819
  1296
wenzelm@8373
  1297
(** cases **)
wenzelm@8373
  1298
wenzelm@16147
  1299
local
wenzelm@16147
  1300
wenzelm@16668
  1301
fun rem_case name = remove (fn (x: string, (y, _)) => x = y) name;
wenzelm@16147
  1302
wenzelm@18476
  1303
fun add_case _ ("", _) cases = cases
wenzelm@18476
  1304
  | add_case _ (name, NONE) cases = rem_case name cases
wenzelm@18476
  1305
  | add_case is_proper (name, SOME c) cases = (name, (c, is_proper)) :: rem_case name cases;
wenzelm@16147
  1306
wenzelm@18678
  1307
fun prep_case name fxs c =
wenzelm@18609
  1308
  let
wenzelm@18609
  1309
    fun replace (opt_x :: xs) ((y, T) :: ys) = (the_default y opt_x, T) :: replace xs ys
wenzelm@18609
  1310
      | replace [] ys = ys
wenzelm@18678
  1311
      | replace (_ :: _) [] = error ("Too many parameters for case " ^ quote name);
wenzelm@18609
  1312
    val RuleCases.Case {fixes, assumes, binds, cases} = c;
wenzelm@18609
  1313
    val fixes' = replace fxs fixes;
wenzelm@18609
  1314
    val binds' = map drop_schematic binds;
wenzelm@18609
  1315
  in
wenzelm@18609
  1316
    if null (fold (Term.add_tvarsT o snd) fixes []) andalso
wenzelm@18609
  1317
      null (fold (fold Term.add_vars o snd) assumes []) then
wenzelm@18609
  1318
        RuleCases.Case {fixes = fixes', assumes = assumes, binds = binds', cases = cases}
wenzelm@18678
  1319
    else error ("Illegal schematic variable(s) in case " ^ quote name)
wenzelm@18609
  1320
  end;
wenzelm@18609
  1321
wenzelm@18672
  1322
fun fix (x, T) ctxt =
wenzelm@18672
  1323
  let
wenzelm@18672
  1324
    val (bind, ctxt') = bind_fixes [x] ctxt;
wenzelm@18672
  1325
    val t = bind (Free (x, T));
wenzelm@18672
  1326
  in (t, ctxt' |> declare_syntax t) end;
wenzelm@18672
  1327
wenzelm@16147
  1328
in
wenzelm@16147
  1329
wenzelm@18672
  1330
fun add_cases is_proper = map_cases o fold (add_case is_proper);
wenzelm@18609
  1331
wenzelm@18609
  1332
fun case_result c ctxt =
wenzelm@18609
  1333
  let
wenzelm@18609
  1334
    val RuleCases.Case {fixes, ...} = c;
wenzelm@18672
  1335
    val (ts, ctxt') = ctxt |> fold_map fix fixes;
wenzelm@18672
  1336
    val RuleCases.Case {assumes, binds, cases, ...} = RuleCases.apply ts c;
wenzelm@18609
  1337
  in
wenzelm@18609
  1338
    ctxt'
wenzelm@18699
  1339
    |> add_binds_i (map drop_schematic binds)
wenzelm@18609
  1340
    |> add_cases true (map (apsnd SOME) cases)
wenzelm@18609
  1341
    |> pair (assumes, (binds, cases))
wenzelm@18609
  1342
  end;
wenzelm@18609
  1343
wenzelm@18609
  1344
val apply_case = apfst fst oo case_result;
wenzelm@18609
  1345
wenzelm@16540
  1346
fun get_case ctxt name xs =
wenzelm@17184
  1347
  (case AList.lookup (op =) (cases_of ctxt) name of
wenzelm@18678
  1348
    NONE => error ("Unknown case: " ^ quote name)
wenzelm@18678
  1349
  | SOME (c, _) => prep_case name xs c);
wenzelm@8373
  1350
wenzelm@16147
  1351
end;
wenzelm@8373
  1352
wenzelm@8373
  1353
wenzelm@8373
  1354
wenzelm@10810
  1355
(** print context information **)
wenzelm@10810
  1356
wenzelm@10810
  1357
val verbose = ref false;
wenzelm@10810
  1358
fun verb f x = if ! verbose then f (x ()) else [];
wenzelm@10810
  1359
wenzelm@10810
  1360
fun setmp_verbose f x = Library.setmp verbose true f x;
wenzelm@10810
  1361
wenzelm@10810
  1362
fun pretty_items prt name items =
wenzelm@10810
  1363
  let
wenzelm@10810
  1364
    fun prt_itms (name, [x]) = Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt x]
wenzelm@10810
  1365
      | prt_itms (name, xs) = Pretty.big_list (name ^ ":") (map prt xs);
wenzelm@10810
  1366
  in
wenzelm@10810
  1367
    if null items andalso not (! verbose) then []
wenzelm@10810
  1368
    else [Pretty.big_list name (map prt_itms items)]
wenzelm@10810
  1369
  end;
wenzelm@10810
  1370
wenzelm@10810
  1371
wenzelm@12072
  1372
(* local syntax *)
wenzelm@12072
  1373
wenzelm@12093
  1374
val print_syntax = Syntax.print_syntax o syn_of;
wenzelm@12072
  1375
wenzelm@12072
  1376
wenzelm@18971
  1377
(* local consts *)
wenzelm@18971
  1378
wenzelm@18971
  1379
fun pretty_consts ctxt =
wenzelm@18971
  1380
  let
wenzelm@19033
  1381
    val ((_, globals), (space, consts)) =
wenzelm@19033
  1382
      pairself (#constants o Consts.dest) (#consts (rep_context ctxt));
wenzelm@18971
  1383
    fun local_abbrev (_, (_, NONE)) = I
wenzelm@18971
  1384
      | local_abbrev (c, (T, SOME t)) =
wenzelm@18971
  1385
          if Symtab.defined globals c then I else cons (c, Logic.mk_equals (Const (c, T), t));
wenzelm@18971
  1386
    val abbrevs = NameSpace.extern_table (space, Symtab.make (Symtab.fold local_abbrev consts []));
wenzelm@18971
  1387
  in
wenzelm@18971
  1388
    if null abbrevs andalso not (! verbose) then []
wenzelm@19310
  1389
    else [Pretty.big_list "abbreviations:" (map (pretty_term_no_abbrevs ctxt o #2) abbrevs)]
wenzelm@18971
  1390
  end;
wenzelm@18971
  1391
wenzelm@18971
  1392
wenzelm@10810
  1393
(* term bindings *)
wenzelm@10810
  1394
wenzelm@16540
  1395
fun pretty_binds ctxt =
wenzelm@10810
  1396
  let
wenzelm@16540
  1397
    val binds = binds_of ctxt;
wenzelm@19310
  1398
    fun prt_bind (xi, (T, t)) = pretty_term_no_abbrevs ctxt (Logic.mk_equals (Var (xi, T), t));
wenzelm@10810
  1399
  in
wenzelm@15758
  1400
    if Vartab.is_empty binds andalso not (! verbose) then []
wenzelm@15758
  1401
    else [Pretty.big_list "term bindings:" (map prt_bind (Vartab.dest binds))]
wenzelm@10810
  1402
  end;
wenzelm@10810
  1403
wenzelm@10810
  1404
val print_binds = Pretty.writeln o Pretty.chunks o pretty_binds;
wenzelm@10810
  1405
wenzelm@10810
  1406
wenzelm@10810
  1407
(* local theorems *)
wenzelm@10810
  1408
wenzelm@16540
  1409
fun pretty_lthms ctxt =
wenzelm@19001
  1410
  pretty_items (pretty_thm ctxt) "facts:" (NameSpace.extern_table (#1 (thms_of ctxt)));
wenzelm@10810
  1411
wenzelm@12057
  1412
val print_lthms = Pretty.writeln o Pretty.chunks o pretty_lthms;
wenzelm@10810
  1413
wenzelm@10810
  1414
wenzelm@10810
  1415
(* local contexts *)
wenzelm@10810
  1416
wenzelm@16540
  1417
fun pretty_cases ctxt =
wenzelm@10810
  1418
  let
wenzelm@12057
  1419
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1420
wenzelm@10810
  1421
    fun prt_let (xi, t) = Pretty.block
wenzelm@10818
  1422
      [Pretty.quote (prt_term (Var (xi, Term.fastype_of t))), Pretty.str " =", Pretty.brk 1,
wenzelm@10810
  1423
        Pretty.quote (prt_term t)];
wenzelm@10810
  1424
wenzelm@13425
  1425
    fun prt_asm (a, ts) = Pretty.block (Pretty.breaks
wenzelm@13425
  1426
      ((if a = "" then [] else [Pretty.str (a ^ ":")]) @ map (Pretty.quote o prt_term) ts));
wenzelm@13425
  1427
wenzelm@10810
  1428
    fun prt_sect _ _ _ [] = []
wenzelm@10810
  1429
      | prt_sect s sep prt xs = [Pretty.block (Pretty.breaks (Pretty.str s ::
skalberg@15570
  1430
            List.concat (Library.separate sep (map (Library.single o prt) xs))))];
wenzelm@10810
  1431
wenzelm@18609
  1432
    fun prt_case (name, (fixes, (asms, (lets, cs)))) = Pretty.block (Pretty.fbreaks
wenzelm@10810
  1433
      (Pretty.str (name ^ ":") ::
wenzelm@11915
  1434
        prt_sect "fix" [] (Pretty.str o fst) fixes @
wenzelm@10810
  1435
        prt_sect "let" [Pretty.str "and"] prt_let
skalberg@15570
  1436
          (List.mapPartial (fn (xi, SOME t) => SOME (xi, t) | _ => NONE) lets) @
wenzelm@13425
  1437
        (if forall (null o #2) asms then []
wenzelm@18609
  1438
          else prt_sect "assume" [Pretty.str "and"] prt_asm asms) @
wenzelm@18609
  1439
        prt_sect "subcases:" [] (Pretty.str o fst) cs));
wenzelm@16540
  1440
wenzelm@18476
  1441
    fun add_case (_, (_, false)) = I
wenzelm@18609
  1442
      | add_case (name, (c as RuleCases.Case {fixes, ...}, true)) =
wenzelm@18609
  1443
          cons (name, (fixes, #1 (case_result c ctxt)));
wenzelm@18476
  1444
    val cases = fold add_case (cases_of ctxt) [];
wenzelm@10810
  1445
  in
wenzelm@10810
  1446
    if null cases andalso not (! verbose) then []
wenzelm@18476
  1447
    else [Pretty.big_list "cases:" (map prt_case cases)]
wenzelm@10810
  1448
  end;
wenzelm@10810
  1449
wenzelm@10810
  1450
val print_cases = Pretty.writeln o Pretty.chunks o pretty_cases;
wenzelm@10810
  1451
wenzelm@10810
  1452
wenzelm@12057
  1453
(* core context *)
wenzelm@10810
  1454
wenzelm@10810
  1455
val prems_limit = ref 10;
wenzelm@10810
  1456
wenzelm@18672
  1457
fun pretty_ctxt ctxt =
wenzelm@10810
  1458
  let
wenzelm@12057
  1459
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1460
wenzelm@12093
  1461
    (*structures*)
wenzelm@19001
  1462
    val structs = LocalSyntax.structs_of (syntax_of ctxt);
wenzelm@12093
  1463
    val prt_structs = if null structs then []
wenzelm@12093
  1464
      else [Pretty.block (Pretty.str "structures:" :: Pretty.brk 1 ::
wenzelm@12093
  1465
        Pretty.commas (map Pretty.str structs))];
wenzelm@12093
  1466
wenzelm@12057
  1467
    (*fixes*)
wenzelm@12057
  1468
    fun prt_fix (x, x') =
wenzelm@12057
  1469
      if x = x' then Pretty.str x
wenzelm@12057
  1470
      else Pretty.block [Pretty.str x, Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')];
wenzelm@18340
  1471
    val fixes =
wenzelm@18340
  1472
      rev (filter_out ((can Syntax.dest_internal orf member (op =) structs) o #1) (fixes_of ctxt));
wenzelm@12093
  1473
    val prt_fixes = if null fixes then []
wenzelm@12093
  1474
      else [Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 ::
wenzelm@12093
  1475
        Pretty.commas (map prt_fix fixes))];
wenzelm@12057
  1476
wenzelm@12057
  1477
    (*prems*)
wenzelm@10810
  1478
    val limit = ! prems_limit;
wenzelm@10810
  1479
    val prems = prems_of ctxt;
wenzelm@10810
  1480
    val len = length prems;
wenzelm@12093
  1481
    val prt_prems = if null prems then []
wenzelm@12093
  1482
      else [Pretty.big_list "prems:" ((if len <= limit then [] else [Pretty.str "..."]) @
wenzelm@12093
  1483
        map (pretty_thm ctxt) (Library.drop (len - limit, prems)))];
wenzelm@12093
  1484
wenzelm@12093
  1485
  in prt_structs @ prt_fixes @ prt_prems end;
wenzelm@10810
  1486
wenzelm@10810
  1487
wenzelm@10810
  1488
(* main context *)
wenzelm@10810
  1489
wenzelm@16540
  1490
fun pretty_context ctxt =
wenzelm@10810
  1491
  let
wenzelm@12057
  1492
    val prt_term = pretty_term ctxt;
wenzelm@12057
  1493
    val prt_typ = pretty_typ ctxt;
wenzelm@12057
  1494
    val prt_sort = pretty_sort ctxt;
wenzelm@10810
  1495
wenzelm@10810
  1496
    (*theory*)
wenzelm@12057
  1497
    val pretty_thy = Pretty.block
wenzelm@17384
  1498
      [Pretty.str "theory:", Pretty.brk 1, Context.pretty_thy (theory_of ctxt)];
wenzelm@10810
  1499
wenzelm@10810
  1500
    (*defaults*)
wenzelm@10810
  1501
    fun prt_atom prt prtT (x, X) = Pretty.block
wenzelm@10810
  1502
      [prt x, Pretty.str " ::", Pretty.brk 1, prtT X];
wenzelm@10810
  1503
wenzelm@10810
  1504
    fun prt_var (x, ~1) = prt_term (Syntax.free x)
wenzelm@10810
  1505
      | prt_var xi = prt_term (Syntax.var xi);
wenzelm@10810
  1506
wenzelm@10810
  1507
    fun prt_varT (x, ~1) = prt_typ (TFree (x, []))
wenzelm@10810
  1508
      | prt_varT xi = prt_typ (TVar (xi, []));
wenzelm@10810
  1509
wenzelm@10810
  1510
    val prt_defT = prt_atom prt_var prt_typ;
wenzelm@10810
  1511
    val prt_defS = prt_atom prt_varT prt_sort;
wenzelm@16540
  1512
wenzelm@16540
  1513
    val (types, sorts, used, _) = defaults_of ctxt;
wenzelm@10810
  1514
  in
wenzelm@18609
  1515
    verb single (K pretty_thy) @
wenzelm@18672
  1516
    pretty_ctxt ctxt @
wenzelm@18971
  1517
    verb pretty_consts (K ctxt) @
wenzelm@10810
  1518
    verb pretty_binds (K ctxt) @
wenzelm@12057
  1519
    verb pretty_lthms (K ctxt) @
wenzelm@10810
  1520
    verb pretty_cases (K ctxt) @
wenzelm@18609
  1521
    verb single (fn () => Pretty.big_list "type constraints:" (map prt_defT (Vartab.dest types))) @
wenzelm@18609
  1522
    verb single (fn () => Pretty.big_list "default sorts:" (map prt_defS (Vartab.dest sorts))) @
wenzelm@18809
  1523
    verb single (fn () => Pretty.strs ("used type variable names:" :: rev used))
wenzelm@10810
  1524
  end;
wenzelm@10810
  1525
wenzelm@18809
  1526
wenzelm@18809
  1527
(* toplevel pretty printing *)
wenzelm@18809
  1528
wenzelm@18809
  1529
val debug = ref false;
wenzelm@18809
  1530
wenzelm@18809
  1531
fun pprint_context ctxt = Pretty.pprint
wenzelm@18809
  1532
 (if ! debug then Pretty.quote (Pretty.big_list "proof context:" (pretty_context ctxt))
wenzelm@18809
  1533
  else Pretty.str "<context>");
wenzelm@18809
  1534
wenzelm@5819
  1535
end;