author | wenzelm |
Sat, 29 Sep 2007 21:39:48 +0200 | |
changeset 24763 | da4a9986eccd |
parent 24708 | d9b00117365e |
child 24966 | 70111480b84b |
permissions | -rw-r--r-- |
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(* Title: Pure/theory.ML |
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ID: $Id$ |
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Author: Lawrence C Paulson and Markus Wenzel |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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Logical theory content: axioms, definitions, oracles. |
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*) |
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signature BASIC_THEORY = |
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sig |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val eq_thy: theory * theory -> bool |
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val subthy: theory * theory -> bool |
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end |
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|
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signature THEORY = |
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sig |
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include BASIC_THEORY |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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include SIGN_THEORY |
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val assert_super: theory -> theory -> theory |
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val parents_of: theory -> theory list |
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val ancestors_of: theory -> theory list |
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val check_thy: theory -> theory_ref |
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val deref: theory_ref -> theory |
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val merge: theory * theory -> theory |
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val merge_refs: theory_ref * theory_ref -> theory_ref |
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val merge_list: theory list -> theory |
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val checkpoint: theory -> theory |
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val copy: theory -> theory |
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val requires: theory -> string -> string -> unit |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val axiom_space: theory -> NameSpace.T |
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val axiom_table: theory -> term Symtab.table |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val oracle_space: theory -> NameSpace.T |
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val oracle_table: theory -> ((theory * Object.T -> term) * stamp) Symtab.table |
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val axioms_of: theory -> (string * term) list |
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val all_axioms_of: theory -> (string * term) list |
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val defs_of: theory -> Defs.T |
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val at_begin: (theory -> theory option) -> theory -> theory |
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val at_end: (theory -> theory option) -> theory -> theory |
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val begin_theory: string -> theory list -> theory |
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val end_theory: theory -> theory |
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val add_axioms: (bstring * string) list -> theory -> theory |
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val add_axioms_i: (bstring * term) list -> theory -> theory |
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val add_deps: string -> string * typ -> (string * typ) list -> theory -> theory |
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val add_defs: bool -> bool -> (bstring * string) list -> theory -> theory |
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val add_defs_i: bool -> bool -> (bstring * term) list -> theory -> theory |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val add_finals: bool -> string list -> theory -> theory |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val add_finals_i: bool -> term list -> theory -> theory |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val add_oracle: bstring * (theory * Object.T -> term) -> theory -> theory |
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end |
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structure Theory: THEORY = |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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struct |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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|
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(** theory context operations **) |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val eq_thy = Context.eq_thy; |
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val subthy = Context.subthy; |
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fun assert_super thy1 thy2 = |
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if subthy (thy1, thy2) then thy2 |
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else raise THEORY ("Not a super theory", [thy1, thy2]); |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val parents_of = Context.parents_of; |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val ancestors_of = Context.ancestors_of; |
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val check_thy = Context.check_thy; |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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val deref = Context.deref; |
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val merge = Context.merge; |
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val merge_refs = Context.merge_refs; |
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fun merge_list [] = raise THEORY ("Empty merge of theories", []) |
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| merge_list (thy :: thys) = Library.foldl merge (thy, thys); |
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val checkpoint = Context.checkpoint_thy; |
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val copy = Context.copy_thy; |
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fun requires thy name what = |
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if Context.exists_name name thy then () |
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else error ("Require theory " ^ quote name ^ " as an ancestor for " ^ what); |
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(** theory wrappers **) |
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type wrapper = (theory -> theory option) * stamp; |
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fun apply_wrappers (wrappers: wrapper list) = |
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let |
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fun app [] res = res |
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| app ((f, _) :: fs) (changed, thy) = |
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(case f thy of |
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NONE => app fs (changed, thy) |
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| SOME thy' => app fs (true, thy')); |
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fun app_fixpoint thy = |
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(case app wrappers (false, thy) of |
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(false, _) => thy |
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| (true, thy') => app_fixpoint thy'); |
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in app_fixpoint end; |
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(** datatype thy **) |
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datatype thy = Thy of |
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{axioms: term NameSpace.table, |
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defs: Defs.T, |
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oracles: ((theory * Object.T -> term) * stamp) NameSpace.table, |
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wrappers: wrapper list * wrapper list}; |
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fun make_thy (axioms, defs, oracles, wrappers) = |
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Thy {axioms = axioms, defs = defs, oracles = oracles, wrappers = wrappers}; |
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fun err_dup_axm dup = error ("Duplicate axiom: " ^ quote dup); |
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fun err_dup_ora dup = error ("Duplicate oracle: " ^ quote dup); |
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structure ThyData = TheoryDataFun |
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( |
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type T = thy; |
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val empty = make_thy (NameSpace.empty_table, Defs.empty, NameSpace.empty_table, ([], [])); |
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val copy = I; |
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fun extend (Thy {axioms, defs, oracles, wrappers}) = |
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make_thy (NameSpace.empty_table, defs, oracles, wrappers); |
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fun merge pp (thy1, thy2) = |
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let |
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val Thy {axioms = _, defs = defs1, oracles = oracles1, wrappers = (bgs1, ens1)} = thy1; |
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val Thy {axioms = _, defs = defs2, oracles = oracles2, wrappers = (bgs2, ens2)} = thy2; |
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val axioms' = NameSpace.empty_table; |
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val defs' = Defs.merge pp (defs1, defs2); |
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val oracles' = NameSpace.merge_tables (eq_snd (op =)) (oracles1, oracles2) |
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handle Symtab.DUP dup => err_dup_ora dup; |
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val bgs' = Library.merge (eq_snd op =) (bgs1, bgs2); |
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val ens' = Library.merge (eq_snd op =) (ens1, ens2); |
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in make_thy (axioms', defs', oracles', (bgs', ens')) end; |
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); |
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fun rep_theory thy = ThyData.get thy |> (fn Thy args => args); |
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fun map_thy f = ThyData.map (fn (Thy {axioms, defs, oracles, wrappers}) => |
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make_thy (f (axioms, defs, oracles, wrappers))); |
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fun map_axioms f = map_thy |
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(fn (axioms, defs, oracles, wrappers) => (f axioms, defs, oracles, wrappers)); |
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fun map_defs f = map_thy |
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(fn (axioms, defs, oracles, wrappers) => (axioms, f defs, oracles, wrappers)); |
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fun map_oracles f = map_thy |
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(fn (axioms, defs, oracles, wrappers) => (axioms, defs, f oracles, wrappers)); |
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fun map_wrappers f = map_thy |
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(fn (axioms, defs, oracles, wrappers) => (axioms, defs, oracles, f wrappers)); |
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(* basic operations *) |
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val axiom_space = #1 o #axioms o rep_theory; |
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val axiom_table = #2 o #axioms o rep_theory; |
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val oracle_space = #1 o #oracles o rep_theory; |
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val oracle_table = #2 o #oracles o rep_theory; |
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val axioms_of = Symtab.dest o #2 o #axioms o rep_theory; |
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fun all_axioms_of thy = maps axioms_of (thy :: ancestors_of thy); |
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val defs_of = #defs o rep_theory; |
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(* begin/end theory *) |
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val begin_wrappers = rev o #1 o #wrappers o rep_theory; |
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val end_wrappers = rev o #2 o #wrappers o rep_theory; |
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fun at_begin f = map_wrappers (apfst (cons (f, stamp ()))); |
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fun at_end f = map_wrappers (apsnd (cons (f, stamp ()))); |
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fun begin_theory name imports = |
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let |
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val thy = Context.begin_thy Sign.pp name imports; |
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val wrappers = begin_wrappers thy; |
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in thy |> Sign.local_path |> apply_wrappers wrappers end; |
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fun end_theory thy = |
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thy |> apply_wrappers (end_wrappers thy) |> Context.finish_thy; |
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(* signature operations *) |
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structure SignTheory: SIGN_THEORY = Sign; |
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open SignTheory; |
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(** add axioms **) |
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(* prepare axioms *) |
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fun err_in_axm msg name = |
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cat_error msg ("The error(s) above occurred in axiom " ^ quote name); |
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fun cert_axm thy (name, raw_tm) = |
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let |
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val (t, T, _) = Sign.certify_prop thy raw_tm |
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handle TYPE (msg, _, _) => error msg |
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| TERM (msg, _) => error msg; |
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in |
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Term.no_dummy_patterns t handle TERM (msg, _) => error msg; |
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(name, Sign.no_vars (Sign.pp thy) t) |
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end; |
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fun read_axm thy (name, str) = |
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cert_axm thy (name, Syntax.read_prop_global thy str) |
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handle ERROR msg => err_in_axm msg name; |
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(* add_axioms(_i) *) |
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local |
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||
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fun gen_add_axioms prep_axm raw_axms thy = thy |> map_axioms (fn axioms => |
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let |
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val axms = map (apsnd (Compress.term thy o Logic.varify) o prep_axm thy) raw_axms; |
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val axioms' = NameSpace.extend_table (Sign.naming_of thy) axms axioms |
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handle Symtab.DUP dup => err_dup_axm dup; |
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in axioms' end); |
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in |
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val add_axioms = gen_add_axioms read_axm; |
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val add_axioms_i = gen_add_axioms cert_axm; |
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end; |
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(** add constant definitions **) |
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|
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(* dependencies *) |
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|
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fun dependencies thy unchecked is_def name lhs rhs = |
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let |
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val pp = Sign.pp thy; |
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val consts = Sign.consts_of thy; |
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fun prep const = |
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let val Const (c, T) = Sign.no_vars pp (Const const) |
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in (c, Consts.typargs consts (c, Compress.typ thy (Logic.varifyT T))) end; |
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|
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val lhs_vars = Term.add_tfreesT (#2 lhs) []; |
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val rhs_extras = fold (#2 #> Term.fold_atyps (fn TFree v => |
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if member (op =) lhs_vars v then I else insert (op =) v | _ => I)) rhs []; |
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val _ = |
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if null rhs_extras then () |
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else error ("Specification depends on extra type variables: " ^ |
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|
258 |
commas_quote (map (Pretty.string_of_typ pp o TFree) rhs_extras) ^ |
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259 |
"\nThe error(s) above occurred in " ^ quote name); |
24199 | 260 |
in Defs.define pp unchecked is_def name (prep lhs) (map prep rhs) end; |
19708
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261 |
|
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262 |
fun add_deps a raw_lhs raw_rhs thy = |
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263 |
let |
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264 |
val lhs :: rhs = map (dest_Const o Sign.cert_term thy o Const) (raw_lhs :: raw_rhs); |
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265 |
val name = if a = "" then (#1 lhs ^ " axiom") else a; |
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266 |
in thy |> map_defs (dependencies thy false false name lhs rhs) end; |
17706 | 267 |
|
268 |
||
16944 | 269 |
(* check_overloading *) |
9280 | 270 |
|
16944 | 271 |
fun check_overloading thy overloaded (c, T) = |
16291 | 272 |
let |
24763 | 273 |
val declT = Sign.the_const_constraint thy c |
274 |
handle TYPE (msg, _, _) => error msg; |
|
19806 | 275 |
val T' = Logic.varifyT T; |
16944 | 276 |
|
277 |
fun message txt = |
|
278 |
[Pretty.block [Pretty.str "Specification of constant ", |
|
279 |
Pretty.str c, Pretty.str " ::", Pretty.brk 1, Pretty.quote (Sign.pretty_typ thy T)], |
|
280 |
Pretty.str txt] |> Pretty.chunks |> Pretty.string_of; |
|
16291 | 281 |
in |
16944 | 282 |
if Sign.typ_instance thy (declT, T') then () |
283 |
else if Type.raw_instance (declT, T') then |
|
284 |
error (Library.setmp show_sorts true |
|
285 |
message "imposes additional sort constraints on the constant declaration") |
|
286 |
else if overloaded then () |
|
287 |
else warning (message "is strictly less general than the declared type"); |
|
288 |
(c, T) |
|
9280 | 289 |
end; |
290 |
||
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291 |
|
16291 | 292 |
(* check_def *) |
293 |
||
19630 | 294 |
fun check_def thy unchecked overloaded (bname, tm) defs = |
16291 | 295 |
let |
17706 | 296 |
val name = Sign.full_name thy bname; |
19693 | 297 |
val (lhs_const, rhs) = Sign.cert_def (Sign.pp thy) tm; |
16944 | 298 |
val rhs_consts = fold_aterms (fn Const const => insert (op =) const | _ => I) rhs []; |
18943 | 299 |
val _ = check_overloading thy overloaded lhs_const; |
19708
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parents:
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diff
changeset
|
300 |
in defs |> dependencies thy unchecked true name lhs_const rhs_consts end |
18678 | 301 |
handle ERROR msg => cat_error msg (Pretty.string_of (Pretty.block |
16883 | 302 |
[Pretty.str ("The error(s) above occurred in definition " ^ quote bname ^ ":"), |
19693 | 303 |
Pretty.fbrk, Pretty.quote (Sign.pretty_term thy tm)])); |
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|
304 |
|
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|
305 |
|
16443
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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changeset
|
306 |
(* add_defs(_i) *) |
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changeset
|
307 |
|
16291 | 308 |
local |
9320 | 309 |
|
19630 | 310 |
fun gen_add_defs prep_axm unchecked overloaded raw_axms thy = |
16443
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|
311 |
let val axms = map (prep_axm thy) raw_axms in |
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type theory, theory_ref, exception THEORY and related operations imported from Context;
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|
312 |
thy |
19630 | 313 |
|> map_defs (fold (check_def thy unchecked overloaded) axms) |
9320 | 314 |
|> add_axioms_i axms |
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|
315 |
end; |
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|
316 |
|
16291 | 317 |
in |
318 |
||
319 |
val add_defs_i = gen_add_defs cert_axm; |
|
320 |
val add_defs = gen_add_defs read_axm; |
|
321 |
||
322 |
end; |
|
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|
323 |
|
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|
324 |
|
16443
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changeset
|
325 |
(* add_finals(_i) *) |
14223
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parents:
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diff
changeset
|
326 |
|
16291 | 327 |
local |
328 |
||
17706 | 329 |
fun gen_add_finals prep_term overloaded args thy = |
14223
0ee05eef881b
Added support for making constants final, that is, ensuring that no
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parents:
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diff
changeset
|
330 |
let |
17706 | 331 |
fun const_of (Const const) = const |
332 |
| const_of (Free _) = error "Attempt to finalize variable (or undeclared constant)" |
|
333 |
| const_of _ = error "Attempt to finalize non-constant term"; |
|
19708
a508bde37a81
added add_deps, which actually records dependencies of consts (unlike add_finals);
wenzelm
parents:
19700
diff
changeset
|
334 |
fun specify (c, T) = dependencies thy false false (c ^ " axiom") (c, T) []; |
24708 | 335 |
val finalize = specify o check_overloading thy overloaded o const_of o |
336 |
Sign.cert_term thy o prep_term thy; |
|
17706 | 337 |
in thy |> map_defs (fold finalize args) end; |
16291 | 338 |
|
14223
0ee05eef881b
Added support for making constants final, that is, ensuring that no
skalberg
parents:
14204
diff
changeset
|
339 |
in |
16291 | 340 |
|
24708 | 341 |
val add_finals = gen_add_finals Syntax.read_term_global; |
342 |
val add_finals_i = gen_add_finals (K I); |
|
16291 | 343 |
|
14223
0ee05eef881b
Added support for making constants final, that is, ensuring that no
skalberg
parents:
14204
diff
changeset
|
344 |
end; |
0ee05eef881b
Added support for making constants final, that is, ensuring that no
skalberg
parents:
14204
diff
changeset
|
345 |
|
0ee05eef881b
Added support for making constants final, that is, ensuring that no
skalberg
parents:
14204
diff
changeset
|
346 |
|
3878 | 347 |
|
16443
82a116532e3e
type theory, theory_ref, exception THEORY and related operations imported from Context;
wenzelm
parents:
16369
diff
changeset
|
348 |
(** add oracle **) |
3814 | 349 |
|
16443
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type theory, theory_ref, exception THEORY and related operations imported from Context;
wenzelm
parents:
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diff
changeset
|
350 |
fun add_oracle (bname, oracle) thy = thy |> map_oracles (fn oracles => |
23086 | 351 |
NameSpace.extend_table (Sign.naming_of thy) [(bname, (oracle, stamp ()))] oracles |
23655
d2d1138e0ddc
replaced exception TableFun/GraphFun.DUPS by TableFun/GraphFun.DUP;
wenzelm
parents:
23600
diff
changeset
|
352 |
handle Symtab.DUP dup => err_dup_ora dup); |
3885 | 353 |
|
1526 | 354 |
end; |
355 |
||
3767
e2bb53d8dd26
moved theory stuff (add_defs etc.) here from drule.ML;
wenzelm
parents:
2979
diff
changeset
|
356 |
structure BasicTheory: BASIC_THEORY = Theory; |
e2bb53d8dd26
moved theory stuff (add_defs etc.) here from drule.ML;
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parents:
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diff
changeset
|
357 |
open BasicTheory; |