author | wenzelm |
Wed, 27 Apr 2011 10:31:18 +0200 | |
changeset 42482 | 42c7ef050bc3 |
parent 42360 | da8817d01e7c |
child 42488 | 4638622bcaa1 |
permissions | -rw-r--r-- |
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(* Title: Pure/variable.ML |
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Author: Makarius |
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Fixed type/term variables and polymorphic term abbreviations.
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Fixed type/term variables and polymorphic term abbreviations. |
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*) |
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signature VARIABLE = |
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sig |
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val is_body: Proof.context -> bool |
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val set_body: bool -> Proof.context -> Proof.context |
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val restore_body: Proof.context -> Proof.context -> Proof.context |
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val names_of: Proof.context -> Name.context |
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val fixes_of: Proof.context -> (string * string) list |
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val binds_of: Proof.context -> (typ * term) Vartab.table |
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val maxidx_of: Proof.context -> int |
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val sorts_of: Proof.context -> sort list |
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val constraints_of: Proof.context -> typ Vartab.table * sort Vartab.table |
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val is_declared: Proof.context -> string -> bool |
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val is_fixed: Proof.context -> string -> bool |
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val newly_fixed: Proof.context -> Proof.context -> string -> bool |
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val name: binding -> string |
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val default_type: Proof.context -> string -> typ option |
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val def_type: Proof.context -> bool -> indexname -> typ option |
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val def_sort: Proof.context -> indexname -> sort option |
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val declare_names: term -> Proof.context -> Proof.context |
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val declare_constraints: term -> Proof.context -> Proof.context |
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val declare_term: term -> Proof.context -> Proof.context |
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val declare_typ: typ -> Proof.context -> Proof.context |
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val declare_prf: Proofterm.proof -> Proof.context -> Proof.context |
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val declare_thm: thm -> Proof.context -> Proof.context |
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val global_thm_context: thm -> Proof.context |
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val variant_frees: Proof.context -> term list -> (string * 'a) list -> (string * 'a) list |
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val bind_term: indexname * term option -> Proof.context -> Proof.context |
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val expand_binds: Proof.context -> term -> term |
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val lookup_const: Proof.context -> string -> string option |
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val is_const: Proof.context -> string -> bool |
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val declare_const: string * string -> Proof.context -> Proof.context |
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val add_fixed_names: Proof.context -> term -> string list -> string list |
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val add_fixed: Proof.context -> term -> (string * typ) list -> (string * typ) list |
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val add_free_names: Proof.context -> term -> string list -> string list |
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val add_frees: Proof.context -> term -> (string * typ) list -> (string * typ) list |
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val add_fixes: string list -> Proof.context -> string list * Proof.context |
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val add_fixes_direct: string list -> Proof.context -> Proof.context |
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val auto_fixes: term -> Proof.context -> Proof.context |
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val variant_fixes: string list -> Proof.context -> string list * Proof.context |
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val invent_types: sort list -> Proof.context -> (string * sort) list * Proof.context |
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val export_terms: Proof.context -> Proof.context -> term list -> term list |
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val exportT_terms: Proof.context -> Proof.context -> term list -> term list |
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val exportT: Proof.context -> Proof.context -> thm list -> thm list |
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val export_prf: Proof.context -> Proof.context -> Proofterm.proof -> Proofterm.proof |
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val export: Proof.context -> Proof.context -> thm list -> thm list |
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val export_morphism: Proof.context -> Proof.context -> morphism |
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val importT_inst: term list -> Proof.context -> ((indexname * sort) * typ) list * Proof.context |
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val import_inst: bool -> term list -> Proof.context -> |
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(((indexname * sort) * typ) list * ((indexname * typ) * term) list) * Proof.context |
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val importT_terms: term list -> Proof.context -> term list * Proof.context |
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val import_terms: bool -> term list -> Proof.context -> term list * Proof.context |
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val importT: thm list -> Proof.context -> ((ctyp * ctyp) list * thm list) * Proof.context |
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val import_prf: bool -> Proofterm.proof -> Proof.context -> Proofterm.proof * Proof.context |
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val import: bool -> thm list -> Proof.context -> |
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(((ctyp * ctyp) list * (cterm * cterm) list) * thm list) * Proof.context |
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val tradeT: (Proof.context -> thm list -> thm list) -> Proof.context -> thm list -> thm list |
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val trade: (Proof.context -> thm list -> thm list) -> Proof.context -> thm list -> thm list |
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val focus: cterm -> Proof.context -> ((string * cterm) list * cterm) * Proof.context |
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val focus_subgoal: int -> thm -> Proof.context -> ((string * cterm) list * cterm) * Proof.context |
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val warn_extra_tfrees: Proof.context -> Proof.context -> unit |
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val polymorphic_types: Proof.context -> term list -> (indexname * sort) list * term list |
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val polymorphic: Proof.context -> term list -> term list |
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end; |
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structure Variable: VARIABLE = |
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struct |
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(** local context data **) |
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datatype data = Data of |
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{is_body: bool, (*inner body mode*) |
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names: Name.context, (*type/term variable names*) |
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consts: string Symtab.table, (*consts within the local scope*) |
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fixes: (string * string) list, (*term fixes -- extern/intern*) |
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binds: (typ * term) Vartab.table, (*term bindings*) |
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type_occs: string list Symtab.table, (*type variables -- possibly within term variables*) |
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maxidx: int, (*maximum var index*) |
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sorts: sort Ord_List.T, (*declared sort occurrences*) |
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constraints: |
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typ Vartab.table * (*type constraints*) |
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sort Vartab.table}; (*default sorts*) |
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fun make_data (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) = |
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Data {is_body = is_body, names = names, consts = consts, fixes = fixes, binds = binds, |
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type_occs = type_occs, maxidx = maxidx, sorts = sorts, constraints = constraints}; |
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structure Data = Proof_Data |
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( |
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type T = data; |
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fun init _ = |
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make_data (false, Name.context, Symtab.empty, [], Vartab.empty, Symtab.empty, |
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~1, [], (Vartab.empty, Vartab.empty)); |
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); |
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fun map_data f = |
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Data.map (fn Data {is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints} => |
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make_data (f (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints))); |
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fun map_names f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, f names, consts, fixes, binds, type_occs, maxidx, sorts, constraints)); |
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fun map_consts f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, f consts, fixes, binds, type_occs, maxidx, sorts, constraints)); |
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fun map_fixes f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, f fixes, binds, type_occs, maxidx, sorts, constraints)); |
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fun map_binds f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, fixes, f binds, type_occs, maxidx, sorts, constraints)); |
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fun map_type_occs f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, fixes, binds, f type_occs, maxidx, sorts, constraints)); |
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fun map_maxidx f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, fixes, binds, type_occs, f maxidx, sorts, constraints)); |
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fun map_sorts f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, fixes, binds, type_occs, maxidx, f sorts, constraints)); |
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fun map_constraints f = |
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map_data (fn (is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(is_body, names, consts, fixes, binds, type_occs, maxidx, sorts, f constraints)); |
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fun rep_data ctxt = Data.get ctxt |> (fn Data args => args); |
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val is_body = #is_body o rep_data; |
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fun set_body b = |
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map_data (fn (_, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints) => |
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(b, names, consts, fixes, binds, type_occs, maxidx, sorts, constraints)); |
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fun restore_body ctxt = set_body (is_body ctxt); |
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val names_of = #names o rep_data; |
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val fixes_of = #fixes o rep_data; |
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val binds_of = #binds o rep_data; |
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val type_occs_of = #type_occs o rep_data; |
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val maxidx_of = #maxidx o rep_data; |
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val sorts_of = #sorts o rep_data; |
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val constraints_of = #constraints o rep_data; |
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val is_declared = Name.is_declared o names_of; |
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fun is_fixed ctxt x = exists (fn (_, y) => x = y) (fixes_of ctxt); |
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fun newly_fixed inner outer x = is_fixed inner x andalso not (is_fixed outer x); |
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(*checked name binding*) |
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val name = Long_Name.base_name o Name_Space.full_name Name_Space.default_naming; |
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(** declarations **) |
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(* default sorts and types *) |
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fun default_type ctxt x = Vartab.lookup (#1 (constraints_of ctxt)) (x, ~1); |
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fun def_type ctxt pattern xi = |
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let val {binds, constraints = (types, _), ...} = rep_data ctxt in |
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(case Vartab.lookup types xi of |
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NONE => |
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if pattern then NONE |
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else Vartab.lookup binds xi |> Option.map (Type.mark_polymorphic o #1) |
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| some => some) |
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end; |
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val def_sort = Vartab.lookup o #2 o constraints_of; |
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(* names *) |
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fun declare_type_names t = |
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map_names (fold_types (fold_atyps Term.declare_typ_names) t) #> |
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map_maxidx (fold_types Term.maxidx_typ t); |
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fun declare_names t = |
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declare_type_names t #> |
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map_names (fold_aterms Term.declare_term_frees t) #> |
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map_maxidx (Term.maxidx_term t); |
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(* type occurrences *) |
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fun decl_type_occsT T = fold_atyps (fn TFree (a, _) => Symtab.default (a, []) | _ => I) T; |
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val decl_type_occs = fold_term_types |
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(fn Free (x, _) => fold_atyps (fn TFree (a, _) => Symtab.insert_list (op =) (a, x) | _ => I) |
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| _ => decl_type_occsT); |
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val declare_type_occsT = map_type_occs o fold_types decl_type_occsT; |
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val declare_type_occs = map_type_occs o decl_type_occs; |
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(* constraints *) |
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fun constrain_tvar (xi, S) = |
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if S = dummyS then Vartab.delete_safe xi else Vartab.update (xi, S); |
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fun declare_constraints t = map_constraints (fn (types, sorts) => |
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let |
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val types' = fold_aterms |
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(fn Free (x, T) => Vartab.update ((x, ~1), T) |
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| Var v => Vartab.update v |
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| _ => I) t types; |
|
217 |
val sorts' = fold_types (fold_atyps |
|
21355 | 218 |
(fn TFree (x, S) => constrain_tvar ((x, ~1), S) |
219 |
| TVar v => constrain_tvar v |
|
20162 | 220 |
| _ => I)) t sorts; |
221 |
in (types', sorts') end) |
|
24719
21d1cdab2d8c
declare_constraints: declare (fix) type variables within constraints, but not terms themselves;
wenzelm
parents:
24694
diff
changeset
|
222 |
#> declare_type_occsT t |
22711 | 223 |
#> declare_type_names t; |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
224 |
|
20162 | 225 |
|
226 |
(* common declarations *) |
|
227 |
||
228 |
fun declare_internal t = |
|
229 |
declare_names t #> |
|
28625 | 230 |
declare_type_occs t #> |
231 |
map_sorts (Sorts.insert_term t); |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
232 |
|
20162 | 233 |
fun declare_term t = |
234 |
declare_internal t #> |
|
235 |
declare_constraints t; |
|
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
236 |
|
27280 | 237 |
val declare_typ = declare_term o Logic.mk_type; |
238 |
||
20303 | 239 |
val declare_prf = Proofterm.fold_proof_terms declare_internal (declare_internal o Logic.mk_type); |
240 |
||
22691 | 241 |
val declare_thm = Thm.fold_terms declare_internal; |
42360 | 242 |
fun global_thm_context th = declare_thm th (Proof_Context.init_global (Thm.theory_of_thm th)); |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
243 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
244 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
245 |
(* renaming term/type frees *) |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
246 |
|
20162 | 247 |
fun variant_frees ctxt ts frees = |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
248 |
let |
20162 | 249 |
val names = names_of (fold declare_names ts ctxt); |
20084 | 250 |
val xs = fst (Name.variants (map #1 frees) names); |
251 |
in xs ~~ map snd frees end; |
|
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
252 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
253 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
254 |
|
20303 | 255 |
(** term bindings **) |
256 |
||
30756 | 257 |
fun bind_term (xi, NONE) = map_binds (Vartab.delete_safe xi) |
258 |
| bind_term ((x, i), SOME t) = |
|
20303 | 259 |
let |
25051 | 260 |
val u = Term.close_schematic_term t; |
261 |
val U = Term.fastype_of u; |
|
262 |
in declare_term u #> map_binds (Vartab.update ((x, i), (U, u))) end; |
|
20303 | 263 |
|
264 |
fun expand_binds ctxt = |
|
265 |
let |
|
266 |
val binds = binds_of ctxt; |
|
21799 | 267 |
val get = fn Var (xi, _) => Vartab.lookup binds xi | _ => NONE; |
268 |
in Envir.beta_norm o Envir.expand_term get end; |
|
20303 | 269 |
|
270 |
||
271 |
||
25325 | 272 |
(** consts **) |
25316
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
273 |
|
25325 | 274 |
val lookup_const = Symtab.lookup o #consts o rep_data; |
275 |
val is_const = is_some oo lookup_const; |
|
25316
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
276 |
|
25325 | 277 |
val declare_fixed = map_consts o Symtab.delete_safe; |
278 |
val declare_const = map_consts o Symtab.update; |
|
25316
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
279 |
|
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
280 |
|
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
281 |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
282 |
(** fixes **) |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
283 |
|
42482 | 284 |
(* collect variables *) |
285 |
||
286 |
fun add_free_names ctxt = |
|
287 |
fold_aterms (fn Free (x, _) => not (is_fixed ctxt x) ? insert (op =) x | _ => I); |
|
288 |
||
289 |
fun add_frees ctxt = |
|
290 |
fold_aterms (fn Free (x, T) => not (is_fixed ctxt x) ? insert (op =) (x, T) | _ => I); |
|
291 |
||
292 |
fun add_fixed_names ctxt = |
|
293 |
fold_aterms (fn Free (x, _) => is_fixed ctxt x ? insert (op =) x | _ => I); |
|
294 |
||
295 |
fun add_fixed ctxt = |
|
296 |
fold_aterms (fn Free (x, T) => is_fixed ctxt x ? insert (op =) (x, T) | _ => I); |
|
297 |
||
298 |
||
299 |
(* declarations *) |
|
300 |
||
20084 | 301 |
local |
302 |
||
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
303 |
fun no_dups [] = () |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
304 |
| no_dups dups = error ("Duplicate fixed variable(s): " ^ commas_quote dups); |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
305 |
|
20102 | 306 |
fun new_fixes names' xs xs' = |
307 |
map_names (K names') #> |
|
25316
17c183417f93
added is_const/declare_const for local scope of fixes/consts;
wenzelm
parents:
25051
diff
changeset
|
308 |
fold declare_fixed xs #> |
20102 | 309 |
map_fixes (fn fixes => (rev (xs ~~ xs') @ fixes)) #> |
20162 | 310 |
fold (declare_constraints o Syntax.free) xs' #> |
20084 | 311 |
pair xs'; |
312 |
||
313 |
in |
|
314 |
||
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
315 |
fun add_fixes xs ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
316 |
let |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
317 |
val _ = |
20084 | 318 |
(case filter (can Name.dest_skolem) xs of [] => () |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
319 |
| bads => error ("Illegal internal Skolem constant(s): " ^ commas_quote bads)); |
20084 | 320 |
val _ = no_dups (duplicates (op =) xs); |
321 |
val (ys, zs) = split_list (fixes_of ctxt); |
|
20102 | 322 |
val names = names_of ctxt; |
20084 | 323 |
val (xs', names') = |
20149 | 324 |
if is_body ctxt then Name.variants xs names |>> map Name.skolem |
33049
c38f02fdf35d
curried inter as canonical list operation (beware of argument order)
haftmann
parents:
33038
diff
changeset
|
325 |
else (no_dups (inter (op =) xs ys); no_dups (inter (op =) xs zs); |
20084 | 326 |
(xs, fold Name.declare xs names)); |
20102 | 327 |
in ctxt |> new_fixes names' xs xs' end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
328 |
|
20797
c1f0bc7e7d80
renamed Variable.invent_fixes to Variable.variant_fixes;
wenzelm
parents:
20579
diff
changeset
|
329 |
fun variant_fixes raw_xs ctxt = |
20084 | 330 |
let |
20102 | 331 |
val names = names_of ctxt; |
26714
4773b832f1b1
variant_fixes: preserve internal state, mark skolem only for body mode;
wenzelm
parents:
25573
diff
changeset
|
332 |
val xs = map (fn x => Name.clean x |> can Name.dest_internal x ? Name.internal) raw_xs; |
4773b832f1b1
variant_fixes: preserve internal state, mark skolem only for body mode;
wenzelm
parents:
25573
diff
changeset
|
333 |
val (xs', names') = Name.variants xs names |>> (is_body ctxt ? map Name.skolem); |
20102 | 334 |
in ctxt |> new_fixes names' xs xs' end; |
20084 | 335 |
|
336 |
end; |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
337 |
|
20251 | 338 |
|
339 |
fun add_fixes_direct xs ctxt = ctxt |
|
340 |
|> set_body false |
|
341 |
|> (snd o add_fixes xs) |
|
342 |
|> restore_body ctxt; |
|
343 |
||
42482 | 344 |
fun auto_fixes t ctxt = ctxt |
345 |
|> not (is_body ctxt) ? add_fixes_direct (rev (add_free_names ctxt t [])) |
|
20251 | 346 |
|> declare_term t; |
347 |
||
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
348 |
fun invent_types Ss ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
349 |
let |
24848 | 350 |
val tfrees = Name.invents (names_of ctxt) Name.aT (length Ss) ~~ Ss; |
20162 | 351 |
val ctxt' = fold (declare_constraints o Logic.mk_type o TFree) tfrees ctxt; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
352 |
in (tfrees, ctxt') end; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
353 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
354 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
355 |
|
22671 | 356 |
(** export -- generalize type/term variables (beware of closure sizes) **) |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
357 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
358 |
fun export_inst inner outer = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
359 |
let |
20162 | 360 |
val declared_outer = is_declared outer; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
361 |
val fixes_inner = fixes_of inner; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
362 |
val fixes_outer = fixes_of outer; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
363 |
|
33957 | 364 |
val gen_fixes = map #2 (take (length fixes_inner - length fixes_outer) fixes_inner); |
20162 | 365 |
val still_fixed = not o member (op =) gen_fixes; |
22671 | 366 |
|
367 |
val type_occs_inner = type_occs_of inner; |
|
368 |
fun gen_fixesT ts = |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
369 |
Symtab.fold (fn (a, xs) => |
20162 | 370 |
if declared_outer a orelse exists still_fixed xs |
22671 | 371 |
then I else cons a) (fold decl_type_occs ts type_occs_inner) []; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
372 |
in (gen_fixesT, gen_fixes) end; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
373 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
374 |
fun exportT_inst inner outer = #1 (export_inst inner outer); |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
375 |
|
22671 | 376 |
fun exportT_terms inner outer = |
377 |
let val mk_tfrees = exportT_inst inner outer in |
|
378 |
fn ts => ts |> map |
|
31977 | 379 |
(Term_Subst.generalize (mk_tfrees ts, []) |
22671 | 380 |
(fold (Term.fold_types Term.maxidx_typ) ts ~1 + 1)) |
381 |
end; |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
382 |
|
22671 | 383 |
fun export_terms inner outer = |
384 |
let val (mk_tfrees, tfrees) = export_inst inner outer in |
|
385 |
fn ts => ts |> map |
|
31977 | 386 |
(Term_Subst.generalize (mk_tfrees ts, tfrees) |
22671 | 387 |
(fold Term.maxidx_term ts ~1 + 1)) |
388 |
end; |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
389 |
|
20303 | 390 |
fun export_prf inner outer prf = |
391 |
let |
|
22671 | 392 |
val (mk_tfrees, frees) = export_inst (declare_prf prf inner) outer; |
393 |
val tfrees = mk_tfrees []; |
|
20303 | 394 |
val idx = Proofterm.maxidx_proof prf ~1 + 1; |
36620
e6bb250402b5
simplified/unified fundamental operations on types/terms/proofterms -- prefer Same.operation over "option" variant;
wenzelm
parents:
36610
diff
changeset
|
395 |
val gen_term = Term_Subst.generalize_same (tfrees, frees) idx; |
e6bb250402b5
simplified/unified fundamental operations on types/terms/proofterms -- prefer Same.operation over "option" variant;
wenzelm
parents:
36610
diff
changeset
|
396 |
val gen_typ = Term_Subst.generalizeT_same tfrees idx; |
e6bb250402b5
simplified/unified fundamental operations on types/terms/proofterms -- prefer Same.operation over "option" variant;
wenzelm
parents:
36610
diff
changeset
|
397 |
in Same.commit (Proofterm.map_proof_terms_same gen_term gen_typ) prf end; |
20303 | 398 |
|
22671 | 399 |
|
400 |
fun gen_export (mk_tfrees, frees) ths = |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
401 |
let |
22671 | 402 |
val tfrees = mk_tfrees (map Thm.full_prop_of ths); |
403 |
val maxidx = fold Thm.maxidx_thm ths ~1; |
|
404 |
in map (Thm.generalize (tfrees, frees) (maxidx + 1)) ths end; |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
405 |
|
22671 | 406 |
fun exportT inner outer = gen_export (exportT_inst inner outer, []); |
407 |
fun export inner outer = gen_export (export_inst inner outer); |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
408 |
|
21522 | 409 |
fun export_morphism inner outer = |
410 |
let |
|
411 |
val fact = export inner outer; |
|
412 |
val term = singleton (export_terms inner outer); |
|
413 |
val typ = Logic.type_map term; |
|
29605 | 414 |
in Morphism.morphism {binding = I, typ = typ, term = term, fact = fact} end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
415 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
416 |
|
24765 | 417 |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
418 |
(** import -- fix schematic type/term variables **) |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
419 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
420 |
fun importT_inst ts ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
421 |
let |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
422 |
val tvars = rev (fold Term.add_tvars ts []); |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
423 |
val (tfrees, ctxt') = invent_types (map #2 tvars) ctxt; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
424 |
in (tvars ~~ map TFree tfrees, ctxt') end; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
425 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
426 |
fun import_inst is_open ts ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
427 |
let |
26714
4773b832f1b1
variant_fixes: preserve internal state, mark skolem only for body mode;
wenzelm
parents:
25573
diff
changeset
|
428 |
val ren = Name.clean #> (if is_open then I else Name.internal); |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
429 |
val (instT, ctxt') = importT_inst ts ctxt; |
31977 | 430 |
val vars = map (apsnd (Term_Subst.instantiateT instT)) (rev (fold Term.add_vars ts [])); |
20797
c1f0bc7e7d80
renamed Variable.invent_fixes to Variable.variant_fixes;
wenzelm
parents:
20579
diff
changeset
|
431 |
val (xs, ctxt'') = variant_fixes (map (ren o #1 o #1) vars) ctxt'; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
432 |
val inst = vars ~~ map Free (xs ~~ map #2 vars); |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
433 |
in ((instT, inst), ctxt'') end; |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
434 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
435 |
fun importT_terms ts ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
436 |
let val (instT, ctxt') = importT_inst ts ctxt |
31977 | 437 |
in (map (Term_Subst.instantiate (instT, [])) ts, ctxt') end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
438 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
439 |
fun import_terms is_open ts ctxt = |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
440 |
let val (inst, ctxt') = import_inst is_open ts ctxt |
31977 | 441 |
in (map (Term_Subst.instantiate inst) ts, ctxt') end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
442 |
|
31794
71af1fd6a5e4
renamed Variable.import_thms to Variable.import (back again cf. ed7aa5a350ef -- Alice is no longer supported);
wenzelm
parents:
30756
diff
changeset
|
443 |
fun importT ths ctxt = |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
444 |
let |
42360 | 445 |
val thy = Proof_Context.theory_of ctxt; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
446 |
val (instT, ctxt') = importT_inst (map Thm.full_prop_of ths) ctxt; |
32280
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
447 |
val insts' as (instT', _) = Thm.certify_inst thy (instT, []); |
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
448 |
val ths' = map (Thm.instantiate insts') ths; |
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
449 |
in ((instT', ths'), ctxt') end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
450 |
|
20303 | 451 |
fun import_prf is_open prf ctxt = |
452 |
let |
|
453 |
val ts = rev (Proofterm.fold_proof_terms cons (cons o Logic.mk_type) prf []); |
|
454 |
val (insts, ctxt') = import_inst is_open ts ctxt; |
|
455 |
in (Proofterm.instantiate insts prf, ctxt') end; |
|
456 |
||
31794
71af1fd6a5e4
renamed Variable.import_thms to Variable.import (back again cf. ed7aa5a350ef -- Alice is no longer supported);
wenzelm
parents:
30756
diff
changeset
|
457 |
fun import is_open ths ctxt = |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
458 |
let |
42360 | 459 |
val thy = Proof_Context.theory_of ctxt; |
32280
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
460 |
val (insts, ctxt') = import_inst is_open (map Thm.full_prop_of ths) ctxt; |
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
461 |
val insts' = Thm.certify_inst thy insts; |
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
462 |
val ths' = map (Thm.instantiate insts') ths; |
4fb3f426052a
Variable.importT/import: return full instantiations, tuned;
wenzelm
parents:
32199
diff
changeset
|
463 |
in ((insts', ths'), ctxt') end; |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
464 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
465 |
|
19926 | 466 |
(* import/export *) |
467 |
||
21287 | 468 |
fun gen_trade imp exp f ctxt ths = |
20220 | 469 |
let val ((_, ths'), ctxt') = imp ths ctxt |
21287 | 470 |
in exp ctxt' ctxt (f ctxt' ths') end; |
19926 | 471 |
|
31794
71af1fd6a5e4
renamed Variable.import_thms to Variable.import (back again cf. ed7aa5a350ef -- Alice is no longer supported);
wenzelm
parents:
30756
diff
changeset
|
472 |
val tradeT = gen_trade importT exportT; |
71af1fd6a5e4
renamed Variable.import_thms to Variable.import (back again cf. ed7aa5a350ef -- Alice is no longer supported);
wenzelm
parents:
30756
diff
changeset
|
473 |
val trade = gen_trade (import true) export; |
19926 | 474 |
|
475 |
||
20162 | 476 |
(* focus on outermost parameters *) |
20149 | 477 |
|
478 |
fun forall_elim_prop t prop = |
|
20579 | 479 |
Thm.beta_conversion false (Thm.capply (Thm.dest_arg prop) t) |
480 |
|> Thm.cprop_of |> Thm.dest_arg; |
|
20149 | 481 |
|
482 |
fun focus goal ctxt = |
|
483 |
let |
|
484 |
val cert = Thm.cterm_of (Thm.theory_of_cterm goal); |
|
485 |
val t = Thm.term_of goal; |
|
20162 | 486 |
val ps = Term.variant_frees t (Term.strip_all_vars t); (*as they are printed :-*) |
20149 | 487 |
val (xs, Ts) = split_list ps; |
20797
c1f0bc7e7d80
renamed Variable.invent_fixes to Variable.variant_fixes;
wenzelm
parents:
20579
diff
changeset
|
488 |
val (xs', ctxt') = variant_fixes xs ctxt; |
20220 | 489 |
val ps' = ListPair.map (cert o Free) (xs', Ts); |
490 |
val goal' = fold forall_elim_prop ps' goal; |
|
27119
c36c88fcdd22
focus: actually declare constraints for local parameters;
wenzelm
parents:
26714
diff
changeset
|
491 |
val ctxt'' = ctxt' |> fold (declare_constraints o Thm.term_of) ps'; |
32199 | 492 |
in ((xs ~~ ps', goal'), ctxt'') end; |
20149 | 493 |
|
20303 | 494 |
fun focus_subgoal i st = |
495 |
let |
|
22691 | 496 |
val all_vars = Thm.fold_terms Term.add_vars st []; |
20303 | 497 |
val no_binds = map (fn (xi, _) => (xi, NONE)) all_vars; |
498 |
in |
|
30756 | 499 |
fold bind_term no_binds #> |
20303 | 500 |
fold (declare_constraints o Var) all_vars #> |
501 |
focus (Thm.cprem_of st i) |
|
502 |
end; |
|
503 |
||
504 |
||
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
505 |
|
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
506 |
(** implicit polymorphism **) |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
507 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
508 |
(* warn_extra_tfrees *) |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
509 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
510 |
fun warn_extra_tfrees ctxt1 ctxt2 = |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
511 |
let |
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
512 |
fun occs_typ a = Term.exists_subtype (fn TFree (b, _) => a = b | _ => false); |
20162 | 513 |
fun occs_free a x = |
514 |
(case def_type ctxt1 false (x, ~1) of |
|
515 |
SOME T => if occs_typ a T then I else cons (a, x) |
|
516 |
| NONE => cons (a, x)); |
|
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
517 |
|
20162 | 518 |
val occs1 = type_occs_of ctxt1; |
519 |
val occs2 = type_occs_of ctxt2; |
|
19911
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
520 |
val extras = Symtab.fold (fn (a, xs) => |
300bc6ce970d
major reworking of export functionality -- based on Term/Thm.generalize;
wenzelm
parents:
19899
diff
changeset
|
521 |
if Symtab.defined occs1 a then I else fold (occs_free a) xs) occs2 []; |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
522 |
val tfrees = map #1 extras |> sort_distinct string_ord; |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
523 |
val frees = map #2 extras |> sort_distinct string_ord; |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
524 |
in |
38831
4933a3dfd745
more careful treatment of context visibility flag wrt. spurious warnings;
wenzelm
parents:
37145
diff
changeset
|
525 |
if null extras orelse not (Context_Position.is_visible ctxt2) then () |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
526 |
else warning ("Introduced fixed type variable(s): " ^ commas tfrees ^ " in " ^ |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
527 |
space_implode " or " (map quote frees)) |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
528 |
end; |
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
529 |
|
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
530 |
|
20149 | 531 |
(* polymorphic terms *) |
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
532 |
|
24694 | 533 |
fun polymorphic_types ctxt ts = |
20003 | 534 |
let |
535 |
val ctxt' = fold declare_term ts ctxt; |
|
20162 | 536 |
val occs = type_occs_of ctxt; |
537 |
val occs' = type_occs_of ctxt'; |
|
538 |
val types = Symtab.fold (fn (a, _) => if Symtab.defined occs a then I else cons a) occs' []; |
|
24765 | 539 |
val idx = maxidx_of ctxt' + 1; |
24694 | 540 |
val Ts' = (fold o fold_types o fold_atyps) |
541 |
(fn T as TFree _ => |
|
31977 | 542 |
(case Term_Subst.generalizeT types idx T of TVar v => insert (op =) v | _ => I) |
24694 | 543 |
| _ => I) ts []; |
31977 | 544 |
val ts' = map (Term_Subst.generalize (types, []) idx) ts; |
24694 | 545 |
in (rev Ts', ts') end; |
546 |
||
547 |
fun polymorphic ctxt ts = snd (polymorphic_types ctxt ts); |
|
20003 | 548 |
|
19899
b7385ca02d79
Fixed type/term variables and polymorphic term abbreviations.
wenzelm
parents:
diff
changeset
|
549 |
end; |