author | wenzelm |
Wed, 08 Mar 2000 23:49:30 +0100 | |
changeset 8384 | 13bc74731ae6 |
parent 8373 | e7237c8fe29e |
child 8403 | a8a0411a8e8c |
permissions | -rw-r--r-- |
5819 | 1 |
(* 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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Proof context information. |
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*) |
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signature PROOF_CONTEXT = |
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sig |
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type context |
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exception CONTEXT of string * context |
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val theory_of: context -> theory |
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val sign_of: context -> Sign.sg |
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val prems_of: context -> thm list |
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val show_hyps: bool ref |
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val pretty_thm: thm -> Pretty.T |
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val verbose: bool ref |
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val print_binds: context -> unit |
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val print_thms: context -> unit |
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val print_cases: context -> unit |
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val strings_of_prems: context -> string list |
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val strings_of_context: context -> string list |
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val print_proof_data: theory -> unit |
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val init: theory -> context |
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val read_typ: context -> string -> typ |
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val cert_typ: context -> typ -> typ |
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val cert_skolem: context -> string -> string |
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val read_termTs: context -> (string * typ) list -> term list * (indexname * typ) list |
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val read_term: context -> string -> term |
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val read_prop: context -> string -> term |
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val read_termT_pats: context -> (string * typ) list -> term list |
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val read_term_pats: typ -> context -> string list -> term list |
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val read_prop_pats: context -> string list -> term list |
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val cert_term: context -> term -> term |
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val cert_prop: context -> term -> term |
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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 declare_terms: term list -> context -> context |
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val warn_extra_tfrees: context -> context -> context |
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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 -> context -> context |
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val auto_bind_facts: string -> term list -> context -> context |
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val match_bind: (string list * string) list -> context -> context |
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val match_bind_i: (term list * term) list -> context -> context |
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val read_propp: context * (string * (string list * string list)) |
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-> context * (term * (term list * term list)) |
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val cert_propp: context * (term * (term list * term list)) |
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-> context * (term * (term list * term list)) |
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val bind_propp: context * (string * (string list * string list)) -> context * term |
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val bind_propp_i: context * (term * (term list * term list)) -> context * term |
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val get_thm: context -> string -> thm |
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val get_thms: context -> string -> thm list |
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val get_thmss: context -> string list -> thm list |
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val put_thm: string * thm -> context -> context |
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val put_thms: string * thm list -> context -> context |
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val put_thmss: (string * thm list) list -> context -> context |
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val reset_thms: string -> context -> context |
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val have_thmss: thm list -> string -> context attribute list |
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-> (thm list * context attribute list) list -> context -> context * (string * thm list) |
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val assumptions: context -> (cterm * ((int -> tactic) * (int -> tactic))) list |
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val fixed_names: context -> string list |
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val most_general_varify_tfrees: thm -> thm |
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val assume: ((int -> tactic) * (int -> tactic)) |
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-> (string * context attribute list * (string * (string list * string list)) list) list |
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-> context -> context * ((string * thm list) list * thm list) |
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val assume_i: ((int -> tactic) * (int -> tactic)) |
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-> (string * context attribute list * (term * (term list * term list)) list) list |
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-> context -> context * ((string * thm list) list * thm list) |
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val read_vars: context * (string list * string option) -> context * (string list * typ option) |
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val cert_vars: context * (string list * typ option) -> context * (string list * typ option) |
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val fix: (string list * string option) list -> context -> context |
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val fix_i: (string list * typ option) list -> context -> context |
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val get_case: context -> string -> RuleCases.T |
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val add_cases: (string * RuleCases.T) list -> context -> context |
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val setup: (theory -> theory) list |
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end; |
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signature PRIVATE_PROOF_CONTEXT = |
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sig |
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include PROOF_CONTEXT |
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val init_data: Object.kind -> (theory -> Object.T) * (context -> Object.T -> unit) |
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-> theory -> theory |
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val print_data: Object.kind -> context -> unit |
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val get_data: Object.kind -> (Object.T -> 'a) -> context -> 'a |
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val put_data: Object.kind -> ('a -> Object.T) -> 'a -> context -> context |
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end; |
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structure ProofContext: PRIVATE_PROOF_CONTEXT = |
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struct |
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(** datatype context **) |
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datatype context = |
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Context of |
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{thy: theory, (*current theory*) |
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data: Object.T Symtab.table, (*user data*) |
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asms: |
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((cterm * ((int -> tactic) * (int -> tactic))) list * (*assumes: A ==> _*) |
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(string * thm list) list) * |
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((string * string) list * string list), (*fixes: !!x. _*) |
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binds: (term * typ) option Vartab.table, (*term bindings*) |
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thms: thm list option Symtab.table, (*local thms*) |
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cases: RuleCases.T Symtab.table, (*local contexts*) |
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defs: |
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typ Vartab.table * (*type constraints*) |
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sort Vartab.table * (*default sorts*) |
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string list}; (*used type var names*) |
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exception CONTEXT of string * context; |
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fun make_context (thy, data, asms, binds, thms, cases, defs) = |
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Context {thy = thy, data = data, asms = asms, binds = binds, thms = thms, |
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cases = cases, defs = defs}; |
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fun map_context f (Context {thy, data, asms, binds, thms, cases, defs}) = |
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make_context (f (thy, data, asms, binds, thms, cases, defs)); |
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fun theory_of (Context {thy, ...}) = thy; |
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val sign_of = Theory.sign_of o theory_of; |
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fun prems_of (Context {asms = ((_, asms), _), ...}) = flat (map #2 asms); |
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(** print context information **) |
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val show_hyps = ref false; |
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fun pretty_thm thm = |
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if ! show_hyps then setmp Display.show_hyps true Display.pretty_thm_no_quote thm |
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else Display.pretty_cterm (#prop (Thm.crep_thm thm)); |
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val verbose = ref false; |
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fun verb f x = if ! verbose then f (x ()) else []; |
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val verb_string = verb (Library.single o Pretty.string_of); |
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fun strings_of_items prt name items = |
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fun pretty_itms (name, [x]) = Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 1, prt x] |
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| pretty_itms (name, xs) = Pretty.big_list (name ^ ":") (map prt xs); |
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if null items andalso not (! verbose) then [] |
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else [Pretty.string_of (Pretty.big_list name (map pretty_itms items))] |
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end; |
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(* term bindings *) |
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val smash_option = fn (_, None) => None | (xi, Some b) => Some (xi, b); |
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fun strings_of_binds (ctxt as Context {binds, ...}) = |
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let |
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val prt_term = Sign.pretty_term (sign_of ctxt); |
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fun pretty_bind (xi, (t, T)) = prt_term (Logic.mk_equals (Var (xi, T), t)); |
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val bs = mapfilter smash_option (Vartab.dest binds); |
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in |
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if null bs andalso not (! verbose) then [] |
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else [Pretty.string_of (Pretty.big_list "term bindings:" (map pretty_bind bs))] |
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end; |
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val print_binds = seq writeln o strings_of_binds; |
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(* local theorems *) |
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fun strings_of_thms (Context {thms, ...}) = |
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strings_of_items pretty_thm "local theorems:" (mapfilter smash_option (Symtab.dest thms)); |
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val print_thms = seq writeln o strings_of_thms; |
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(* local contexts *) |
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fun strings_of_cases (ctxt as Context {cases, ...}) = |
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let |
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val prt_term = Sign.pretty_term (sign_of ctxt); |
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fun prt_sect _ _ [] = [] |
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| prt_sect s prt xs = [Pretty.block (Pretty.breaks (Pretty.str s :: map prt xs))]; |
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(* FIXME hilite keywords (using Isar-self syntax) (!?); move to rule_cases.ML (!?) *) |
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fun prt_case (name, (xs, ts)) = Pretty.block (Pretty.breaks |
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(Pretty.str (name ^ ":") :: |
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prt_sect "fix" (prt_term o Free) xs @ |
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prt_sect "assume" (Pretty.quote o prt_term) ts)); |
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in |
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if Symtab.is_empty cases andalso not (! verbose) then [] |
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else [Pretty.string_of (Pretty.big_list "cases:" (map prt_case (Symtab.dest cases)))] |
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end; |
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val print_cases = seq writeln o strings_of_cases; |
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(* main context *) |
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fun strings_of_prems ctxt = |
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(case prems_of ctxt of |
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[] => [] |
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| prems => [Pretty.string_of (Pretty.big_list "prems:" (map pretty_thm prems))]); |
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fun strings_of_context (ctxt as Context {asms = (_, (fixes, _)), cases, |
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defs = (types, sorts, used), ...}) = |
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let |
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val sign = sign_of ctxt; |
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val prt_term = Sign.pretty_term sign; |
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val prt_typ = Sign.pretty_typ sign; |
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val prt_sort = Sign.pretty_sort sign; |
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(*theory*) |
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val pretty_thy = Pretty.block [Pretty.str "Theory:", Pretty.brk 1, Sign.pretty_sg sign]; |
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(*fixes*) |
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fun prt_fix (x, x') = Pretty.block |
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[prt_term (Syntax.free x), Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')]; |
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fun prt_fixes xs = Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 :: |
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Pretty.commas (map prt_fix xs)); |
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(*defaults*) |
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fun prt_atom prt prtT (x, X) = Pretty.block |
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[prt x, Pretty.str " ::", Pretty.brk 1, prtT X]; |
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fun prt_var (x, ~1) = prt_term (Syntax.free x) |
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| prt_var xi = prt_term (Syntax.var xi); |
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fun prt_varT (x, ~1) = prt_typ (TFree (x, [])) |
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| prt_varT xi = prt_typ (TVar (xi, [])); |
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val prt_defT = prt_atom prt_var prt_typ; |
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val prt_defS = prt_atom prt_varT prt_sort; |
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in |
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verb_string (K pretty_thy) @ |
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(if null fixes then [] else [Pretty.string_of (prt_fixes (rev fixes))]) @ |
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strings_of_prems ctxt @ |
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verb strings_of_binds (K ctxt) @ |
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verb strings_of_thms (K ctxt) @ |
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verb strings_of_cases (K ctxt) @ |
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verb_string (fn () => Pretty.big_list "type constraints:" (map prt_defT (Vartab.dest types))) @ |
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verb_string (fn () => Pretty.big_list "default sorts:" (map prt_defS (Vartab.dest sorts))) @ |
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verb_string (fn () => Pretty.strs ("used type variable names:" :: used)) |
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end; |
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(** user data **) |
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(* errors *) |
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254 |
fun of_theory thy = "\nof theory " ^ Sign.str_of_sg (Theory.sign_of thy); |
|
255 |
||
256 |
fun err_inconsistent kinds = |
|
257 |
error ("Attempt to merge different versions of " ^ commas_quote kinds ^ " proof data"); |
|
258 |
||
259 |
fun err_dup_init thy kind = |
|
260 |
error ("Duplicate initialization of " ^ quote kind ^ " proof data" ^ of_theory thy); |
|
261 |
||
262 |
fun err_undef ctxt kind = |
|
263 |
raise CONTEXT ("Tried to access undefined " ^ quote kind ^ " proof data", ctxt); |
|
264 |
||
265 |
fun err_uninit ctxt kind = |
|
266 |
raise CONTEXT ("Tried to access uninitialized " ^ quote kind ^ " proof data" ^ |
|
267 |
of_theory (theory_of ctxt), ctxt); |
|
268 |
||
269 |
fun err_access ctxt kind = |
|
270 |
raise CONTEXT ("Unauthorized access to " ^ quote kind ^ " proof data" ^ |
|
271 |
of_theory (theory_of ctxt), ctxt); |
|
272 |
||
273 |
||
274 |
(* data kind 'Isar/proof_data' *) |
|
275 |
||
276 |
structure ProofDataDataArgs = |
|
277 |
struct |
|
278 |
val name = "Isar/proof_data"; |
|
279 |
type T = (Object.kind * ((theory -> Object.T) * (context -> Object.T -> unit))) Symtab.table; |
|
280 |
||
281 |
val empty = Symtab.empty; |
|
6550 | 282 |
val copy = I; |
5819 | 283 |
val prep_ext = I; |
284 |
fun merge tabs = Symtab.merge (Object.eq_kind o pairself fst) tabs |
|
285 |
handle Symtab.DUPS kinds => err_inconsistent kinds; |
|
286 |
fun print _ tab = Pretty.writeln (Pretty.strs (map #1 (Symtab.dest tab))); |
|
287 |
end; |
|
288 |
||
289 |
structure ProofDataData = TheoryDataFun(ProofDataDataArgs); |
|
290 |
val print_proof_data = ProofDataData.print; |
|
291 |
||
292 |
||
293 |
(* init proof data *) |
|
294 |
||
295 |
fun init_data kind meths thy = |
|
296 |
let |
|
297 |
val name = Object.name_of_kind kind; |
|
298 |
val tab = Symtab.update_new ((name, (kind, meths)), ProofDataData.get thy) |
|
299 |
handle Symtab.DUP _ => err_dup_init thy name; |
|
300 |
in thy |> ProofDataData.put tab end; |
|
301 |
||
302 |
||
303 |
(* access data *) |
|
304 |
||
305 |
fun lookup_data (ctxt as Context {data, ...}) kind = |
|
306 |
let |
|
307 |
val thy = theory_of ctxt; |
|
308 |
val name = Object.name_of_kind kind; |
|
309 |
in |
|
310 |
(case Symtab.lookup (ProofDataData.get thy, name) of |
|
311 |
Some (k, meths) => |
|
312 |
if Object.eq_kind (kind, k) then |
|
313 |
(case Symtab.lookup (data, name) of |
|
314 |
Some x => (x, meths) |
|
315 |
| None => err_undef ctxt name) |
|
316 |
else err_access ctxt name |
|
317 |
| None => err_uninit ctxt name) |
|
318 |
end; |
|
319 |
||
320 |
fun get_data kind f ctxt = |
|
321 |
let val (x, _) = lookup_data ctxt kind |
|
322 |
in f x handle Match => Object.kind_error kind end; |
|
323 |
||
324 |
fun print_data kind ctxt = |
|
325 |
let val (x, (_, prt)) = lookup_data ctxt kind |
|
326 |
in prt ctxt x end; |
|
327 |
||
328 |
fun put_data kind f x ctxt = |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
329 |
(lookup_data ctxt kind; |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
330 |
ctxt |> map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
331 |
(thy, Symtab.update ((Object.name_of_kind kind, f x), data), asms, binds, thms, cases, defs))); |
5819 | 332 |
|
333 |
||
334 |
(* init context *) |
|
335 |
||
5874 | 336 |
fun init thy = |
337 |
let val data = Symtab.map (fn (_, (f, _)) => f thy) (ProofDataData.get thy) in |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
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parents:
8186
diff
changeset
|
338 |
make_context (thy, data, (([], []), ([], [])), Vartab.empty, Symtab.empty, Symtab.empty, |
7670 | 339 |
(Vartab.empty, Vartab.empty, [])) |
5819 | 340 |
end; |
341 |
||
342 |
||
8096 | 343 |
|
7663 | 344 |
(** default sorts and types **) |
345 |
||
7670 | 346 |
fun def_sort (Context {defs = (_, sorts, _), ...}) xi = Vartab.lookup (sorts, xi); |
7663 | 347 |
|
7670 | 348 |
fun def_type (Context {binds, defs = (types, _, _), ...}) is_pat xi = |
7663 | 349 |
(case Vartab.lookup (types, xi) of |
350 |
None => |
|
351 |
if is_pat then None |
|
352 |
else (case Vartab.lookup (binds, xi) of Some (Some (_, T)) => Some T | _ => None) |
|
353 |
| some => some); |
|
354 |
||
355 |
||
5819 | 356 |
|
357 |
(** prepare types **) |
|
358 |
||
7663 | 359 |
fun read_typ ctxt s = |
360 |
transform_error (Sign.read_typ (sign_of ctxt, def_sort ctxt)) s |
|
361 |
handle ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt); |
|
5819 | 362 |
|
363 |
fun cert_typ ctxt raw_T = |
|
364 |
Sign.certify_typ (sign_of ctxt) raw_T |
|
365 |
handle TYPE (msg, _, _) => raise CONTEXT (msg, ctxt); |
|
366 |
||
367 |
||
368 |
||
7679 | 369 |
(* internalize Skolem constants *) |
370 |
||
371 |
fun get_skolem (Context {asms = (_, (fixes, _)), ...}) x = assoc (fixes, x); |
|
372 |
||
373 |
fun check_skolem ctxt check x = |
|
374 |
if check andalso can Syntax.dest_skolem x then |
|
375 |
raise CONTEXT ("Illegal reference to internal Skolem constant: " ^ quote x, ctxt) |
|
376 |
else x; |
|
377 |
||
378 |
fun intern_skolem ctxt check = |
|
379 |
let |
|
380 |
fun intern (t as Free (x, T)) = |
|
381 |
(case get_skolem ctxt (check_skolem ctxt check x) of |
|
382 |
Some x' => Free (x', T) |
|
383 |
| None => t) |
|
384 |
| intern (t $ u) = intern t $ intern u |
|
385 |
| intern (Abs (x, T, t)) = Abs (x, T, intern t) |
|
386 |
| intern a = a; |
|
387 |
in intern end; |
|
388 |
||
389 |
fun cert_skolem ctxt x = |
|
390 |
(case get_skolem ctxt x of |
|
391 |
None => raise CONTEXT ("Undeclared variable: " ^ quote x, ctxt) |
|
392 |
| Some x' => x'); |
|
393 |
||
394 |
||
8096 | 395 |
|
5819 | 396 |
(** prepare terms and propositions **) |
397 |
||
398 |
(* |
|
399 |
(1) read / certify wrt. signature of context |
|
400 |
(2) intern Skolem constants |
|
401 |
(3) expand term bindings |
|
402 |
*) |
|
403 |
||
404 |
||
405 |
(* read / certify wrt. signature *) (*exception ERROR*) (*exception TERM*) |
|
406 |
||
5874 | 407 |
fun read_def_termTs freeze sg (types, sorts, used) sTs = |
408 |
let val (cts, env) = Thm.read_def_cterms (sg, types, sorts) used freeze sTs |
|
409 |
in (map Thm.term_of cts, env) end; |
|
410 |
||
411 |
fun read_def_termT freeze sg defs sT = apfst hd (read_def_termTs freeze sg defs [sT]); |
|
412 |
||
8096 | 413 |
fun read_term_sg freeze sg defs s = #1 (read_def_termT freeze sg defs (s, TypeInfer.logicT)); |
414 |
fun read_prop_sg freeze sg defs s = #1 (read_def_termT freeze sg defs (s, propT)); |
|
5819 | 415 |
|
416 |
||
417 |
fun cert_term_sg sg t = Thm.term_of (Thm.cterm_of sg t); |
|
418 |
||
419 |
fun cert_prop_sg sg tm = |
|
420 |
let |
|
421 |
val ctm = Thm.cterm_of sg tm; |
|
422 |
val {t, T, ...} = Thm.rep_cterm ctm; |
|
423 |
in |
|
424 |
if T = propT then t |
|
425 |
else raise TERM ("Term not of type prop", [t]) |
|
426 |
end; |
|
427 |
||
428 |
||
429 |
(* norm_term *) |
|
430 |
||
431 |
(*beta normal form for terms (not eta normal form), chase variables in |
|
432 |
bindings environment (code taken from Pure/envir.ML)*) |
|
433 |
||
434 |
fun norm_term (ctxt as Context {binds, ...}) = |
|
435 |
let |
|
436 |
(*raised when norm has no effect on a term, to do sharing instead of copying*) |
|
437 |
exception SAME; |
|
438 |
||
439 |
fun norm (t as Var (xi, T)) = |
|
440 |
(case Vartab.lookup (binds, xi) of |
|
7606 | 441 |
Some (Some (u, U)) => |
5819 | 442 |
if T = U then (norm u handle SAME => u) |
443 |
else raise TYPE ("norm_term: ill-typed variable assigment", [T, U], [t, u]) |
|
7606 | 444 |
| _ => raise CONTEXT ("Unbound schematic variable: " ^ Syntax.string_of_vname xi, ctxt)) |
5819 | 445 |
| norm (Abs (a, T, body)) = Abs (a, T, norm body) |
446 |
| norm (Abs (_, _, body) $ t) = normh (subst_bound (t, body)) |
|
447 |
| norm (f $ t) = |
|
448 |
((case norm f of |
|
449 |
Abs (_, _, body) => normh (subst_bound (t, body)) |
|
450 |
| nf => nf $ (norm t handle SAME => t)) handle SAME => f $ norm t) |
|
451 |
| norm _ = raise SAME |
|
452 |
and normh t = norm t handle SAME => t |
|
453 |
in normh end; |
|
454 |
||
455 |
||
6550 | 456 |
(* dummy patterns *) |
457 |
||
6762 | 458 |
local |
459 |
||
6560
1436349f8b28
renamed 'dummy' to 'dummy_pattern' (less dangerous);
wenzelm
parents:
6550
diff
changeset
|
460 |
fun is_dummy (Const (c, _)) = c = PureThy.dummy_patternN |
6550 | 461 |
| is_dummy _ = false; |
462 |
||
6762 | 463 |
fun prep_dummy (i, t) = |
464 |
if is_dummy t then (i + 1, Var (("_dummy_", i), Term.fastype_of t)) else (i, t); |
|
465 |
||
466 |
in |
|
467 |
||
468 |
fun prepare_dummies tm = #2 (Term.foldl_map_aterms prep_dummy (1, tm)); |
|
469 |
||
6550 | 470 |
fun reject_dummies ctxt tm = |
471 |
if foldl_aterms (fn (ok, t) => ok andalso not (is_dummy t)) (true, tm) then tm |
|
472 |
else raise CONTEXT ("Illegal dummy pattern(s) in term", ctxt); |
|
473 |
||
6762 | 474 |
end; |
6550 | 475 |
|
476 |
||
5819 | 477 |
(* read terms *) |
478 |
||
7670 | 479 |
fun gen_read read app is_pat (ctxt as Context {defs = (_, _, used), ...}) s = |
7663 | 480 |
(transform_error (read (sign_of ctxt) (def_type ctxt is_pat, def_sort ctxt, used)) s |
481 |
handle TERM (msg, _) => raise CONTEXT (msg, ctxt) |
|
482 |
| ERROR_MESSAGE msg => raise CONTEXT (msg, ctxt)) |
|
483 |
|> app (intern_skolem ctxt true) |
|
484 |
|> app (if is_pat then I else norm_term ctxt) |
|
485 |
|> app (if is_pat then prepare_dummies else (reject_dummies ctxt)); |
|
5819 | 486 |
|
5874 | 487 |
val read_termTs = gen_read (read_def_termTs false) (apfst o map) false; |
8096 | 488 |
val read_termT_pats = #1 oo gen_read (read_def_termTs false) (apfst o map) true; |
489 |
||
490 |
fun read_term_pats T ctxt pats = read_termT_pats ctxt (map (rpair T) pats); |
|
491 |
val read_prop_pats = read_term_pats propT; |
|
492 |
||
6762 | 493 |
val read_term = gen_read (read_term_sg true) I false; |
494 |
val read_prop = gen_read (read_prop_sg true) I false; |
|
5819 | 495 |
|
496 |
||
497 |
(* certify terms *) |
|
498 |
||
499 |
fun gen_cert cert is_pat ctxt t = |
|
500 |
(cert (sign_of ctxt) t handle TERM (msg, _) => raise CONTEXT (msg, ctxt)) |
|
501 |
|> intern_skolem ctxt false |
|
502 |
|> (if is_pat then I else norm_term ctxt); |
|
503 |
||
504 |
val cert_term = gen_cert cert_term_sg false; |
|
505 |
val cert_prop = gen_cert cert_prop_sg false; |
|
8096 | 506 |
|
507 |
fun cert_term_pats _ = map o gen_cert cert_term_sg true; |
|
508 |
val cert_prop_pats = map o gen_cert cert_prop_sg true; |
|
5819 | 509 |
|
510 |
||
511 |
(* declare terms *) |
|
512 |
||
513 |
val ins_types = foldl_aterms |
|
514 |
(fn (types, Free (x, T)) => Vartab.update (((x, ~1), T), types) |
|
515 |
| (types, Var v) => Vartab.update (v, types) |
|
516 |
| (types, _) => types); |
|
517 |
||
518 |
val ins_sorts = foldl_types (foldl_atyps |
|
519 |
(fn (sorts, TFree (x, S)) => Vartab.update (((x, ~1), S), sorts) |
|
520 |
| (sorts, TVar v) => Vartab.update (v, sorts) |
|
521 |
| (sorts, _) => sorts)); |
|
522 |
||
523 |
val ins_used = foldl_types (foldl_atyps |
|
524 |
(fn (used, TFree (x, _)) => x ins used |
|
525 |
| (used, TVar ((x, _), _)) => x ins used |
|
526 |
| (used, _) => used)); |
|
527 |
||
7663 | 528 |
fun ins_skolem def_ty = foldr |
5994 | 529 |
(fn ((x, x'), types) => |
7663 | 530 |
(case def_ty x' of |
5994 | 531 |
Some T => Vartab.update (((x, ~1), T), types) |
532 |
| None => types)); |
|
533 |
||
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
534 |
fun map_defaults f = map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
535 |
(thy, data, asms, binds, thms, cases, f defs)); |
5819 | 536 |
|
5994 | 537 |
fun declare (ctxt as Context {asms = (_, (fixes, _)), ...}, t) = |
5819 | 538 |
ctxt |
7670 | 539 |
|> map_defaults (fn (types, sorts, used) => (ins_types (types, t), sorts, used)) |
540 |
|> map_defaults (fn (types, sorts, used) => (types, ins_sorts (sorts, t), used)) |
|
541 |
|> map_defaults (fn (types, sorts, used) => (types, sorts, ins_used (used, t))) |
|
542 |
|> map_defaults (fn (types, sorts, used) => |
|
543 |
(ins_skolem (fn x => Vartab.lookup (types, (x, ~1))) (fixes, types), sorts, used)); |
|
5819 | 544 |
|
545 |
||
546 |
fun declare_term t ctxt = declare (ctxt, t); |
|
547 |
fun declare_terms ts ctxt = foldl declare (ctxt, ts); |
|
548 |
||
549 |
||
7925 | 550 |
(* warn_extra_tfrees *) |
551 |
||
552 |
fun warn_extra used1 used2 = |
|
553 |
if used1 = used2 then () |
|
554 |
else |
|
555 |
(case Library.gen_rems (op =) (used2, used1) of |
|
556 |
[] => () |
|
8096 | 557 |
| extras => warning ("DANGER!! Just introduced free type variable(s): " ^ commas (rev extras))); |
7925 | 558 |
|
559 |
fun warn_extra_tfrees (ctxt1 as Context {defs = (_, _, used1), ...}) |
|
560 |
(ctxt2 as Context {defs = (_, _, used2), ...}) = (warn_extra used1 used2; ctxt2); |
|
561 |
||
562 |
||
5819 | 563 |
|
564 |
(** bindings **) |
|
565 |
||
566 |
(* update_binds *) |
|
567 |
||
7606 | 568 |
fun del_bind (ctxt, xi) = |
569 |
ctxt |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
570 |
|> map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
571 |
(thy, data, asms, Vartab.update ((xi, None), binds), thms, cases, defs)); |
7606 | 572 |
|
5819 | 573 |
fun upd_bind (ctxt, (xi, t)) = |
574 |
let val T = fastype_of t in |
|
575 |
ctxt |
|
576 |
|> declare_term t |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
577 |
|> map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
578 |
(thy, data, asms, Vartab.update ((xi, Some (t, T)), binds), thms, cases, defs)) |
5819 | 579 |
end; |
580 |
||
7606 | 581 |
fun del_upd_bind (ctxt, (xi, None)) = del_bind (ctxt, xi) |
582 |
| del_upd_bind (ctxt, (xi, Some t)) = upd_bind (ctxt, (xi, t)); |
|
583 |
||
5819 | 584 |
fun update_binds bs ctxt = foldl upd_bind (ctxt, bs); |
7663 | 585 |
fun update_binds_env env = (*Note: Envir.norm_term ensures proper type instantiation*) |
7479 | 586 |
update_binds (map (apsnd (Envir.norm_term env)) (Envir.alist_of env)); |
5819 | 587 |
|
7606 | 588 |
fun delete_update_binds bs ctxt = foldl del_upd_bind (ctxt, bs); |
589 |
||
5819 | 590 |
|
8096 | 591 |
(* simult_matches *) |
592 |
||
593 |
fun simult_matches [] ctxt = ctxt |
|
594 |
| simult_matches pairs ctxt = |
|
595 |
let |
|
596 |
val maxidx = foldl (fn (i, (t1, t2)) => |
|
597 |
Int.max (i, Int.max (Term.maxidx_of_term t1, Term.maxidx_of_term t2))) (~1, pairs); |
|
598 |
val envs = Unify.smash_unifiers (sign_of ctxt, Envir.empty maxidx, pairs); |
|
599 |
val env = |
|
600 |
(case Seq.pull envs of |
|
601 |
None => raise CONTEXT ("Pattern match failed!", ctxt) (* FIXME improve msg (!?) *) |
|
602 |
| Some (env, _) => env); |
|
603 |
in ctxt |> update_binds_env env end; |
|
604 |
||
605 |
||
606 |
(* add_binds(_i) *) |
|
5819 | 607 |
|
7925 | 608 |
local |
609 |
||
5819 | 610 |
fun gen_bind prep (ctxt, (xi as (x, _), raw_t)) = |
7606 | 611 |
ctxt |> delete_update_binds [(xi, apsome (prep ctxt) raw_t)]; |
5819 | 612 |
|
7925 | 613 |
fun gen_binds prep binds ctxt = |
614 |
warn_extra_tfrees ctxt (foldl (gen_bind prep) (ctxt, binds)); |
|
615 |
||
616 |
in |
|
5819 | 617 |
|
618 |
val add_binds = gen_binds read_term; |
|
619 |
val add_binds_i = gen_binds cert_term; |
|
7925 | 620 |
val auto_bind_goal = add_binds_i o AutoBind.goal; |
621 |
val auto_bind_facts = add_binds_i oo AutoBind.facts; |
|
622 |
||
623 |
end; |
|
5819 | 624 |
|
625 |
||
8096 | 626 |
(* match_bind(_i) *) |
5819 | 627 |
|
8096 | 628 |
local |
629 |
||
630 |
fun gen_bind (prep, prep_pats) (ctxt, (raw_pats, raw_t)) = |
|
5819 | 631 |
let |
5935 | 632 |
val t = prep ctxt raw_t; |
8096 | 633 |
val ctxt' = declare_term t ctxt; |
634 |
val pats = prep_pats (fastype_of t) ctxt' raw_pats; |
|
635 |
val ctxt'' = ctxt' |> simult_matches (map (rpair t) pats); |
|
636 |
in ctxt'' end; |
|
7670 | 637 |
|
8096 | 638 |
fun gen_binds prepp binds ctxt = |
639 |
warn_extra_tfrees ctxt (foldl (gen_bind prepp) (ctxt, binds)); |
|
640 |
||
641 |
in |
|
5935 | 642 |
|
8096 | 643 |
val match_bind = gen_binds (read_term, read_term_pats); |
644 |
val match_bind_i = gen_binds (cert_term, cert_term_pats); |
|
645 |
||
646 |
end; |
|
5935 | 647 |
|
648 |
||
8096 | 649 |
(* proposition patterns *) |
5935 | 650 |
|
8096 | 651 |
fun prep_propp prep_prop prep_pats (ctxt, (raw_prop, (raw_pats1, raw_pats2))) = |
6931 | 652 |
let |
8096 | 653 |
val prop = prep_prop ctxt raw_prop; |
654 |
val ctxt' = declare_term prop ctxt; |
|
655 |
||
656 |
val pats = prep_pats ctxt' (raw_pats1 @ raw_pats2); (*simultaneous type inference!*) |
|
657 |
val len1 = length raw_pats1; |
|
658 |
in (ctxt', (prop, (take (len1, pats), drop (len1, pats)))) end; |
|
659 |
||
660 |
val read_propp = prep_propp read_prop read_prop_pats; |
|
661 |
val cert_propp = prep_propp cert_prop cert_prop_pats; |
|
5935 | 662 |
|
8096 | 663 |
|
664 |
fun gen_bind_propp prepp (ctxt, propp) = |
|
665 |
let |
|
666 |
val (ctxt', (prop, (pats1, pats2))) = prepp (ctxt, propp); |
|
667 |
val pairs = map (rpair prop) pats1 @ map (rpair (Logic.strip_imp_concl prop)) pats2; |
|
668 |
in (ctxt' |> simult_matches pairs, prop) end; |
|
669 |
||
670 |
val bind_propp = gen_bind_propp read_propp; |
|
671 |
val bind_propp_i = gen_bind_propp cert_propp; |
|
6789 | 672 |
|
673 |
||
5819 | 674 |
|
675 |
(** theorems **) |
|
676 |
||
6091 | 677 |
(* get_thm(s) *) |
5819 | 678 |
|
6091 | 679 |
fun get_thm (ctxt as Context {thy, thms, ...}) name = |
5819 | 680 |
(case Symtab.lookup (thms, name) of |
7606 | 681 |
Some (Some [th]) => th |
682 |
| Some (Some _) => raise CONTEXT ("Single theorem expected: " ^ quote name, ctxt) |
|
683 |
| _ => (PureThy.get_thm thy name handle THEORY (msg, _) => raise CONTEXT (msg, ctxt))); |
|
5819 | 684 |
|
6091 | 685 |
fun get_thms (ctxt as Context {thy, thms, ...}) name = |
5819 | 686 |
(case Symtab.lookup (thms, name) of |
7606 | 687 |
Some (Some ths) => ths |
688 |
| _ => (PureThy.get_thms thy name handle THEORY (msg, _) => raise CONTEXT (msg, ctxt))); |
|
5819 | 689 |
|
6091 | 690 |
fun get_thmss ctxt names = flat (map (get_thms ctxt) names); |
5819 | 691 |
|
692 |
||
6091 | 693 |
(* put_thm(s) *) |
5819 | 694 |
|
7479 | 695 |
fun put_thms ("", _) = I |
696 |
| put_thms (name, ths) = map_context |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
697 |
(fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
698 |
(thy, data, asms, binds, Symtab.update ((name, Some ths), thms), cases, defs)); |
5819 | 699 |
|
6091 | 700 |
fun put_thm (name, th) = put_thms (name, [th]); |
5819 | 701 |
|
6091 | 702 |
fun put_thmss [] ctxt = ctxt |
703 |
| put_thmss (th :: ths) ctxt = ctxt |> put_thms th |> put_thmss ths; |
|
5819 | 704 |
|
705 |
||
7606 | 706 |
(* reset_thms *) |
707 |
||
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
708 |
fun reset_thms name = map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
709 |
(thy, data, asms, binds, Symtab.update ((name, None), thms), cases, defs)); |
7606 | 710 |
|
711 |
||
6091 | 712 |
(* have_thmss *) |
5819 | 713 |
|
6875 | 714 |
fun have_thmss more_ths name more_attrs ths_attrs ctxt = |
5819 | 715 |
let |
716 |
fun app ((ct, ths), (th, attrs)) = |
|
6091 | 717 |
let val (ct', th') = Thm.applys_attributes ((ct, th), attrs @ more_attrs) |
5819 | 718 |
in (ct', th' :: ths) end |
719 |
val (ctxt', rev_thms) = foldl app ((ctxt, []), ths_attrs); |
|
6875 | 720 |
val thms = flat (rev rev_thms) @ more_ths; |
6091 | 721 |
in (ctxt' |> put_thms (name, thms), (name, thms)) end; |
5819 | 722 |
|
723 |
||
724 |
||
725 |
(** assumptions **) |
|
726 |
||
727 |
(* get assumptions *) |
|
728 |
||
6847
f175f56c57a6
tuned output: print_context replaced by strings_of_context;
wenzelm
parents:
6797
diff
changeset
|
729 |
fun assumptions (Context {asms = ((asms, _), _), ...}) = asms; |
5819 | 730 |
fun fixed_names (Context {asms = (_, (fixes, _)), ...}) = map #2 fixes; |
731 |
||
732 |
||
733 |
(* assume *) |
|
734 |
||
8186 | 735 |
fun most_general_varify_tfrees thm = |
736 |
let |
|
737 |
val {hyps, prop, ...} = Thm.rep_thm thm; |
|
738 |
val frees = foldr Term.add_term_frees (prop :: hyps, []); |
|
739 |
val leave_tfrees = foldr Term.add_term_tfree_names (frees, []); |
|
740 |
in thm |> Thm.varifyT' leave_tfrees end; |
|
741 |
||
742 |
||
7270 | 743 |
local |
6797 | 744 |
|
7270 | 745 |
fun gen_assm prepp tac (ctxt, (name, attrs, raw_prop_pats)) = |
5819 | 746 |
let |
8096 | 747 |
val (ctxt', props) = foldl_map prepp (ctxt, raw_prop_pats); |
5819 | 748 |
|
7575 | 749 |
val cprops = map (Thm.cterm_of (sign_of ctxt')) props; |
6847
f175f56c57a6
tuned output: print_context replaced by strings_of_context;
wenzelm
parents:
6797
diff
changeset
|
750 |
val cprops_tac = map (rpair tac) cprops; |
8186 | 751 |
val asms = |
752 |
map (most_general_varify_tfrees o Drule.forall_elim_vars 0 o Drule.assume_goal) cprops; |
|
5919 | 753 |
|
754 |
val ths = map (fn th => ([th], [])) asms; |
|
6091 | 755 |
val (ctxt'', (_, thms)) = |
5819 | 756 |
ctxt' |
6797 | 757 |
|> auto_bind_facts name props |
6875 | 758 |
|> have_thmss [] name (attrs @ [Drule.tag_assumption]) ths; |
5819 | 759 |
|
760 |
val ctxt''' = |
|
761 |
ctxt'' |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
762 |
|> map_context (fn (thy, data, ((asms_ct, asms_th), fixes), binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
763 |
(thy, data, ((asms_ct @ cprops_tac, asms_th @ [(name, asms)]), fixes), |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
764 |
binds, thms, cases, defs)); |
7270 | 765 |
in (ctxt''', (name, thms)) end; |
766 |
||
767 |
fun gen_assms prepp tac args ctxt = |
|
768 |
let val (ctxt', thmss) = foldl_map (gen_assm prepp tac) (ctxt, args) |
|
7928 | 769 |
in (warn_extra_tfrees ctxt ctxt', (thmss, prems_of ctxt')) end; |
5819 | 770 |
|
7270 | 771 |
in |
772 |
||
7928 | 773 |
val assume = gen_assms bind_propp; |
774 |
val assume_i = gen_assms bind_propp_i; |
|
7270 | 775 |
|
776 |
end; |
|
5819 | 777 |
|
778 |
||
8096 | 779 |
(* variables *) |
780 |
||
781 |
fun prep_vars prep_typ check (ctxt, (xs, raw_T)) = |
|
782 |
let |
|
783 |
val _ = (case filter (not o Syntax.is_identifier) (map (check_skolem ctxt check) xs) of |
|
784 |
[] => () | bads => raise CONTEXT ("Bad variable name(s): " ^ commas_quote bads, ctxt)); |
|
785 |
||
786 |
val opt_T = apsome (prep_typ ctxt) raw_T; |
|
787 |
val T = if_none opt_T TypeInfer.logicT; |
|
788 |
val ctxt' = ctxt |> declare_terms (map (fn x => Free (x, T)) xs); |
|
789 |
in (ctxt', (xs, opt_T)) end; |
|
790 |
||
791 |
val read_vars = prep_vars read_typ true; |
|
792 |
val cert_vars = prep_vars cert_typ false; |
|
793 |
||
794 |
||
5819 | 795 |
(* fix *) |
796 |
||
8096 | 797 |
local |
798 |
||
799 |
fun add_vars xs (fixes, names) = |
|
800 |
let |
|
801 |
val xs' = variantlist (xs, names); |
|
802 |
val fixes' = (xs ~~ map Syntax.skolem xs') @ fixes; |
|
803 |
val names' = xs' @ names; |
|
804 |
in (fixes', names') end; |
|
805 |
||
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
806 |
fun map_vars f = map_context (fn (thy, data, (assumes, vars), binds, thms, cases, defs) => |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
807 |
(thy, data, (assumes, f vars), binds, thms, cases, defs)); |
5819 | 808 |
|
8096 | 809 |
fun gen_fix prep raw_vars ctxt = |
810 |
let |
|
811 |
val (ctxt', varss) = foldl_map prep (ctxt, raw_vars); |
|
812 |
val xs = flat (map fst varss); |
|
813 |
in |
|
814 |
(case Library.duplicates xs of |
|
815 |
[] => () |
|
816 |
| dups => raise CONTEXT ("Duplicate variable name(s): " ^ commas_quote dups, ctxt)); |
|
817 |
ctxt' |> map_vars (add_vars xs) |
|
818 |
end; |
|
5819 | 819 |
|
8096 | 820 |
in |
7679 | 821 |
|
8096 | 822 |
val fix = gen_fix read_vars; |
823 |
val fix_i = gen_fix cert_vars; |
|
824 |
||
825 |
end; |
|
5819 | 826 |
|
6895 | 827 |
|
5819 | 828 |
|
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
829 |
(** cases **) |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
830 |
|
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
831 |
fun get_case (ctxt as Context {cases, ...}) name = |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
832 |
(case Symtab.lookup (cases, name) of |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
833 |
None => raise CONTEXT ("Unknown case: " ^ quote name, ctxt) |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
834 |
| Some c => c); |
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
835 |
|
8384 | 836 |
|
837 |
fun add_case (tab, ("", _)) = tab |
|
838 |
| add_case (tab, name_c) = Symtab.update (name_c, tab); |
|
839 |
||
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
840 |
fun add_cases xs = map_context (fn (thy, data, asms, binds, thms, cases, defs) => |
8384 | 841 |
(thy, data, asms, binds, thms, foldl add_case (cases, xs), defs)); |
8373
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
842 |
|
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
843 |
|
e7237c8fe29e
handling of local contexts: print_cases, get_case, add_cases;
wenzelm
parents:
8186
diff
changeset
|
844 |
|
5819 | 845 |
(** theory setup **) |
846 |
||
847 |
val setup = [ProofDataData.init]; |
|
848 |
||
849 |
||
850 |
end; |