author | bulwahn |
Thu, 19 Nov 2009 08:25:57 +0100 | |
changeset 33756 | 47b7c9e0bf6e |
parent 33708 | b45d3b8cc74e |
child 33940 | 317933ce3712 |
child 33955 | fff6f11b1f09 |
permissions | -rw-r--r-- |
24219 | 1 |
(* Title: Pure/Isar/code.ML |
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Author: Florian Haftmann, TU Muenchen |
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31962 | 4 |
Abstract executable code of theory. Management of data dependent on |
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executable code. Cache assumes non-concurrent processing of a single theory. |
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24219 | 6 |
*) |
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signature CODE = |
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sig |
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(*constants*) |
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val check_const: theory -> term -> string |
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val read_bare_const: theory -> string -> string * typ |
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val read_const: theory -> string -> string |
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val string_of_const: theory -> string -> string |
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val args_number: theory -> string -> int |
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(*constructor sets*) |
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val constrset_of_consts: theory -> (string * typ) list |
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-> string * ((string * sort) list * (string * typ list) list) |
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(*code equations*) |
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val mk_eqn: theory -> thm * bool -> thm * bool |
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val mk_eqn_warning: theory -> thm -> (thm * bool) option |
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val mk_eqn_liberal: theory -> thm -> (thm * bool) option |
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val assert_eqn: theory -> thm * bool -> thm * bool |
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val assert_eqns_const: theory -> string |
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-> (thm * bool) list -> (thm * bool) list |
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val const_typ_eqn: theory -> thm -> string * typ |
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val typscheme_eqn: theory -> thm -> (string * sort) list * typ |
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val typscheme_eqns: theory -> string -> thm list -> (string * sort) list * typ |
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val standard_typscheme: theory -> thm list -> thm list |
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(*executable code*) |
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val add_datatype: (string * typ) list -> theory -> theory |
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val add_datatype_cmd: string list -> theory -> theory |
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val type_interpretation: |
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(string * ((string * sort) list * (string * typ list) list) |
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-> theory -> theory) -> theory -> theory |
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val add_eqn: thm -> theory -> theory |
31088 | 40 |
val add_nbe_eqn: thm -> theory -> theory |
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val add_default_eqn: thm -> theory -> theory |
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val add_default_eqn_attribute: attribute |
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val add_default_eqn_attrib: Attrib.src |
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val del_eqn: thm -> theory -> theory |
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val del_eqns: string -> theory -> theory |
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certificates for code generator case expressions
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parents:
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val add_case: thm -> theory -> theory |
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certificates for code generator case expressions
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parents:
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val add_undefined: string -> theory -> theory |
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val get_datatype: theory -> string -> ((string * sort) list * (string * typ list) list) |
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overloaded definitions accompanied by explicit constants
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val get_datatype_of_constr: theory -> string -> string option |
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val these_eqns: theory -> string -> (thm * bool) list |
31642 | 51 |
val all_eqns: theory -> (thm * bool) list |
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permissive check for pattern discipline in case schemes
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val get_case_scheme: theory -> string -> (int * (int * string list)) option |
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e943b039f0ac
an intermediate step towards a refined translation of cases
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val undefineds: theory -> string list |
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val print_codesetup: theory -> unit |
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(*infrastructure*) |
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code attributes use common underscore convention
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parents:
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val set_code_target_attr: (string -> thm -> theory -> theory) -> theory -> theory |
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val purge_data: theory -> theory |
24219 | 59 |
end; |
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signature CODE_DATA_ARGS = |
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sig |
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type T |
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val empty: T |
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val purge: theory -> string list -> T -> T |
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end; |
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signature CODE_DATA = |
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sig |
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type T |
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val get: theory -> T |
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val change: theory -> (T -> T) -> T |
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val change_yield: theory -> (T -> 'a * T) -> 'a * T |
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end; |
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signature PRIVATE_CODE = |
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sig |
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include CODE |
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val declare_data: Object.T -> (theory -> string list -> Object.T -> Object.T) |
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-> serial |
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val get_data: serial * ('a -> Object.T) * (Object.T -> 'a) |
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-> theory -> 'a |
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val change_data: serial * ('a -> Object.T) * (Object.T -> 'a) |
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-> theory -> ('a -> 'a) -> 'a |
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val change_yield_data: serial * ('a -> Object.T) * (Object.T -> 'a) |
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-> theory -> ('a -> 'b * 'a) -> 'b * 'a |
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end; |
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structure Code : PRIVATE_CODE = |
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struct |
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(** auxiliary **) |
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(* printing *) |
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indicate CRITICAL nature of various setmp combinators;
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fun string_of_typ thy = setmp_CRITICAL show_sorts true (Syntax.string_of_typ_global thy); |
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fun string_of_const thy c = case AxClass.inst_of_param thy c |
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of SOME (c, tyco) => Sign.extern_const thy c ^ " " ^ enclose "[" "]" (Sign.extern_type thy tyco) |
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| NONE => Sign.extern_const thy c; |
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(* constants *) |
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fun check_bare_const thy t = case try dest_Const t |
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of SOME c_ty => c_ty |
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| NONE => error ("Not a constant: " ^ Syntax.string_of_term_global thy t); |
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fun check_const thy = AxClass.unoverload_const thy o check_bare_const thy; |
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fun read_bare_const thy = check_bare_const thy o Syntax.read_term_global thy; |
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fun read_const thy = AxClass.unoverload_const thy o read_bare_const thy; |
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variables in type schemes must be renamed simultaneously with variables in equations
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31962 | 116 |
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(** data store **) |
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(* code equations *) |
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type eqns = bool * (thm * bool) list; |
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(*default flag, theorems with proper flag *) |
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fun add_drop_redundant thy (thm, proper) thms = |
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let |
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val args_of = snd o strip_comb o map_types Type.strip_sorts |
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o fst o Logic.dest_equals o Thm.plain_prop_of; |
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val args = args_of thm; |
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val incr_idx = Logic.incr_indexes ([], Thm.maxidx_of thm + 1); |
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fun matches_args args' = length args <= length args' andalso |
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Pattern.matchess thy (args, (map incr_idx o curry Library.take (length args)) args'); |
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fun drop (thm', proper') = if (proper orelse not proper') |
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andalso matches_args (args_of thm') then |
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proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
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(warning ("Code generator: dropping redundant code equation\n" ^ |
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
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parents:
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Display.string_of_thm_global thy thm'); true) |
31962 | 136 |
else false; |
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in (thm, proper) :: filter_out drop thms end; |
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fun add_thm thy _ thm (false, thms) = (false, add_drop_redundant thy thm thms) |
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| add_thm thy true thm (true, thms) = (true, thms @ [thm]) |
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| add_thm thy false thm (true, thms) = (false, [thm]); |
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31962 | 142 |
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fun del_thm thm = apsnd (remove (eq_fst Thm.eq_thm_prop) (thm, true)); |
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(* executable code data *) |
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datatype spec = Spec of { |
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history_concluded: bool, |
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eqns: ((bool * eqns) * (serial * eqns) list) Symtab.table |
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(*with explicit history*), |
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dtyps: ((serial * ((string * sort) list * (string * typ list) list)) list) Symtab.table |
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(*with explicit history*), |
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cases: (int * (int * string list)) Symtab.table * unit Symtab.table |
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}; |
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fun make_spec (history_concluded, (eqns, (dtyps, cases))) = |
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Spec { history_concluded = history_concluded, eqns = eqns, dtyps = dtyps, cases = cases }; |
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fun map_spec f (Spec { history_concluded = history_concluded, eqns = eqns, |
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31962 | 160 |
dtyps = dtyps, cases = cases }) = |
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make_spec (f (history_concluded, (eqns, (dtyps, cases)))); |
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fun merge_spec (Spec { history_concluded = _, eqns = eqns1, |
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31962 | 163 |
dtyps = dtyps1, cases = (cases1, undefs1) }, |
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Spec { history_concluded = _, eqns = eqns2, |
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dtyps = dtyps2, cases = (cases2, undefs2) }) = |
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let |
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fun merge_eqns ((_, history1), (_, history2)) = |
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let |
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val raw_history = AList.merge (op = : serial * serial -> bool) |
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(K true) (history1, history2) |
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val filtered_history = filter_out (fst o snd) raw_history |
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val history = if null filtered_history |
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then raw_history else filtered_history; |
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in ((false, (snd o hd) history), history) end; |
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val eqns = Symtab.join (K merge_eqns) (eqns1, eqns2); |
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val dtyps = Symtab.join (K (AList.merge (op =) (K true))) (dtyps1, dtyps2); |
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val cases = (Symtab.merge (K true) (cases1, cases2), |
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Symtab.merge (K true) (undefs1, undefs2)); |
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in make_spec (false, (eqns, (dtyps, cases))) end; |
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fun history_concluded (Spec { history_concluded, ... }) = history_concluded; |
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fun the_eqns (Spec { eqns, ... }) = eqns; |
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fun the_dtyps (Spec { dtyps, ... }) = dtyps; |
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fun the_cases (Spec { cases, ... }) = cases; |
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val map_history_concluded = map_spec o apfst; |
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val map_eqns = map_spec o apsnd o apfst; |
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val map_dtyps = map_spec o apsnd o apsnd o apfst; |
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val map_cases = map_spec o apsnd o apsnd o apsnd; |
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(* data slots dependent on executable code *) |
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(*private copy avoids potential conflict of table exceptions*) |
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31971
8c1b845ed105
renamed functor TableFun to Table, and GraphFun to Graph;
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parents:
31962
diff
changeset
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structure Datatab = Table(type key = int val ord = int_ord); |
31962 | 195 |
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local |
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type kind = { |
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empty: Object.T, |
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purge: theory -> string list -> Object.T -> Object.T |
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}; |
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val kinds = Unsynchronized.ref (Datatab.empty: kind Datatab.table); |
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val kind_keys = Unsynchronized.ref ([]: serial list); |
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31962 | 205 |
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fun invoke f k = case Datatab.lookup (! kinds) k |
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of SOME kind => f kind |
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| NONE => sys_error "Invalid code data identifier"; |
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in |
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fun declare_data empty purge = |
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let |
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val k = serial (); |
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val kind = {empty = empty, purge = purge}; |
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val _ = Unsynchronized.change kinds (Datatab.update (k, kind)); |
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val _ = Unsynchronized.change kind_keys (cons k); |
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in k end; |
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fun invoke_init k = invoke (fn kind => #empty kind) k; |
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fun invoke_purge_all thy cs = |
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fold (fn k => Datatab.map_entry k |
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(invoke (fn kind => #purge kind thy cs) k)) (! kind_keys); |
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end; (*local*) |
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(* theory store *) |
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local |
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type data = Object.T Datatab.table; |
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val empty_data = Datatab.empty : data; |
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structure Code_Data = TheoryDataFun |
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( |
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32738 | 238 |
type T = spec * data Unsynchronized.ref; |
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val empty = (make_spec (false, |
32738 | 240 |
(Symtab.empty, (Symtab.empty, (Symtab.empty, Symtab.empty)))), Unsynchronized.ref empty_data); |
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fun copy (spec, data) = (spec, Unsynchronized.ref (! data)); |
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31962 | 242 |
val extend = copy; |
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fun merge pp ((spec1, data1), (spec2, data2)) = |
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32738 | 244 |
(merge_spec (spec1, spec2), Unsynchronized.ref empty_data); |
31962 | 245 |
); |
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fun thy_data f thy = f ((snd o Code_Data.get) thy); |
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fun get_ensure_init kind data_ref = |
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case Datatab.lookup (! data_ref) kind |
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of SOME x => x |
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| NONE => let val y = invoke_init kind |
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32738 | 253 |
in (Unsynchronized.change data_ref (Datatab.update (kind, y)); y) end; |
31962 | 254 |
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in |
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(* access to executable code *) |
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val the_exec = fst o Code_Data.get; |
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fun complete_class_params thy cs = |
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fold (fn c => case AxClass.inst_of_param thy c |
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of NONE => insert (op =) c |
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| SOME (c', _) => insert (op =) c' #> insert (op =) c) cs []; |
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fun map_exec_purge touched f thy = |
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32738 | 267 |
Code_Data.map (fn (exec, data) => (f exec, Unsynchronized.ref (case touched |
31962 | 268 |
of SOME cs => invoke_purge_all thy (complete_class_params thy cs) (! data) |
269 |
| NONE => empty_data))) thy; |
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33708 | 271 |
val purge_data = (Code_Data.map o apsnd) (fn _ => Unsynchronized.ref empty_data); |
31962 | 272 |
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273 |
fun change_eqns delete c f = (map_exec_purge (SOME [c]) o map_eqns |
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33006 | 274 |
o (if delete then Symtab.map_entry c else Symtab.map_default (c, ((false, (true, [])), []))) |
31962 | 275 |
o apfst) (fn (_, eqns) => (true, f eqns)); |
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33006 | 277 |
fun del_eqns c = change_eqns true c (K (false, [])); |
31962 | 278 |
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279 |
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280 |
(* tackling equation history *) |
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281 |
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282 |
fun get_eqns thy c = |
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Symtab.lookup ((the_eqns o the_exec) thy) c |
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33006 | 284 |
|> Option.map (snd o snd o fst) |
31962 | 285 |
|> these; |
286 |
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287 |
fun continue_history thy = if (history_concluded o the_exec) thy |
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then thy |
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|> (Code_Data.map o apfst o map_history_concluded) (K false) |
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290 |
|> SOME |
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else NONE; |
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fun conclude_history thy = if (history_concluded o the_exec) thy |
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then NONE |
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else thy |
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|> (Code_Data.map o apfst) |
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297 |
((map_eqns o Symtab.map) (fn ((changed, current), history) => |
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298 |
((false, current), |
|
299 |
if changed then (serial (), current) :: history else history)) |
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300 |
#> map_history_concluded (K true)) |
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|> SOME; |
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302 |
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303 |
val _ = Context.>> (Context.map_theory (Code_Data.init |
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#> Theory.at_begin continue_history |
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#> Theory.at_end conclude_history)); |
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306 |
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307 |
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308 |
(* access to data dependent on abstract executable code *) |
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309 |
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310 |
fun get_data (kind, _, dest) = thy_data (get_ensure_init kind #> dest); |
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311 |
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312 |
fun change_data (kind, mk, dest) = |
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313 |
let |
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314 |
fun chnge data_ref f = |
|
315 |
let |
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316 |
val data = get_ensure_init kind data_ref; |
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317 |
val data' = f (dest data); |
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32738 | 318 |
in (Unsynchronized.change data_ref (Datatab.update (kind, mk data')); data') end; |
31962 | 319 |
in thy_data chnge end; |
320 |
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321 |
fun change_yield_data (kind, mk, dest) = |
|
322 |
let |
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323 |
fun chnge data_ref f = |
|
324 |
let |
|
325 |
val data = get_ensure_init kind data_ref; |
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326 |
val (x, data') = f (dest data); |
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32738 | 327 |
in (x, (Unsynchronized.change data_ref (Datatab.update (kind, mk data')); data')) end; |
31962 | 328 |
in thy_data chnge end; |
329 |
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330 |
end; (*local*) |
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331 |
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332 |
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333 |
(** foundation **) |
|
334 |
||
335 |
(* constants *) |
|
336 |
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337 |
fun args_number thy = length o fst o strip_type o Sign.the_const_type thy; |
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338 |
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339 |
||
340 |
(* datatypes *) |
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31156 | 341 |
|
342 |
fun constrset_of_consts thy cs = |
|
343 |
let |
|
344 |
val _ = map (fn (c, _) => if (is_some o AxClass.class_of_param thy) c |
|
345 |
then error ("Is a class parameter: " ^ string_of_const thy c) else ()) cs; |
|
33531 | 346 |
fun no_constr s (c, ty) = error ("Not a datatype constructor:\n" ^ string_of_const thy c |
347 |
^ " :: " ^ string_of_typ thy ty ^ "\n" ^ enclose "(" ")" s); |
|
31156 | 348 |
fun last_typ c_ty ty = |
349 |
let |
|
33531 | 350 |
val tfrees = Term.add_tfreesT ty []; |
31156 | 351 |
val (tyco, vs) = ((apsnd o map) (dest_TFree) o dest_Type o snd o strip_type) ty |
33531 | 352 |
handle TYPE _ => no_constr "bad type" c_ty |
353 |
val _ = if has_duplicates (eq_fst (op =)) vs |
|
354 |
then no_constr "duplicate type variables in datatype" c_ty else (); |
|
355 |
val _ = if length tfrees <> length vs |
|
356 |
then no_constr "type variables missing in datatype" c_ty else (); |
|
31156 | 357 |
in (tyco, vs) end; |
358 |
fun ty_sorts (c, ty) = |
|
359 |
let |
|
360 |
val ty_decl = (Logic.unvarifyT o Sign.the_const_type thy) c; |
|
361 |
val (tyco, _) = last_typ (c, ty) ty_decl; |
|
362 |
val (_, vs) = last_typ (c, ty) ty; |
|
363 |
in ((tyco, map snd vs), (c, (map fst vs, ty))) end; |
|
364 |
fun add ((tyco', sorts'), c) ((tyco, sorts), cs) = |
|
365 |
let |
|
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
366 |
val _ = if (tyco' : string) <> tyco |
31156 | 367 |
then error "Different type constructors in constructor set" |
368 |
else (); |
|
369 |
val sorts'' = map2 (curry (Sorts.inter_sort (Sign.classes_of thy))) sorts' sorts |
|
370 |
in ((tyco, sorts), c :: cs) end; |
|
371 |
fun inst vs' (c, (vs, ty)) = |
|
372 |
let |
|
373 |
val the_v = the o AList.lookup (op =) (vs ~~ vs'); |
|
374 |
val ty' = map_atyps (fn TFree (v, _) => TFree (the_v v)) ty; |
|
375 |
in (c, (fst o strip_type) ty') end; |
|
376 |
val c' :: cs' = map ty_sorts cs; |
|
377 |
val ((tyco, sorts), cs'') = fold add cs' (apsnd single c'); |
|
378 |
val vs = Name.names Name.context Name.aT sorts; |
|
379 |
val cs''' = map (inst vs) cs''; |
|
380 |
in (tyco, (vs, rev cs''')) end; |
|
381 |
||
31962 | 382 |
fun get_datatype thy tyco = |
383 |
case these (Symtab.lookup ((the_dtyps o the_exec) thy) tyco) |
|
384 |
of (_, spec) :: _ => spec |
|
385 |
| [] => Sign.arity_number thy tyco |
|
386 |
|> Name.invents Name.context Name.aT |
|
387 |
|> map (rpair []) |
|
388 |
|> rpair []; |
|
389 |
||
390 |
fun get_datatype_of_constr thy c = |
|
391 |
case (snd o strip_type o Sign.the_const_type thy) c |
|
392 |
of Type (tyco, _) => if member (op =) ((map fst o snd o get_datatype thy) tyco) c |
|
393 |
then SOME tyco else NONE |
|
394 |
| _ => NONE; |
|
395 |
||
396 |
fun is_constr thy = is_some o get_datatype_of_constr thy; |
|
397 |
||
31156 | 398 |
|
399 |
(* code equations *) |
|
400 |
||
401 |
exception BAD_THM of string; |
|
402 |
fun bad_thm msg = raise BAD_THM msg; |
|
403 |
fun error_thm f thm = f thm handle BAD_THM msg => error msg; |
|
31642 | 404 |
fun warning_thm f thm = SOME (f thm) handle BAD_THM msg => (warning msg; NONE) |
31156 | 405 |
fun try_thm f thm = SOME (f thm) handle BAD_THM _ => NONE; |
406 |
||
407 |
fun is_linear thm = |
|
408 |
let val (_, args) = (strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of) thm |
|
409 |
in not (has_duplicates (op =) ((fold o fold_aterms) |
|
410 |
(fn Var (v, _) => cons v | _ => I) args [])) end; |
|
411 |
||
31962 | 412 |
fun gen_assert_eqn thy is_constr_pat (thm, proper) = |
31156 | 413 |
let |
414 |
val (lhs, rhs) = (Logic.dest_equals o Thm.plain_prop_of) thm |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
415 |
handle TERM _ => bad_thm ("Not an equation: " ^ Display.string_of_thm_global thy thm) |
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
416 |
| THM _ => bad_thm ("Not an equation: " ^ Display.string_of_thm_global thy thm); |
31156 | 417 |
fun vars_of t = fold_aterms (fn Var (v, _) => insert (op =) v |
418 |
| Free _ => bad_thm ("Illegal free variable in equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
419 |
^ Display.string_of_thm_global thy thm) |
31156 | 420 |
| _ => I) t []; |
421 |
fun tvars_of t = fold_term_types (fn _ => |
|
422 |
fold_atyps (fn TVar (v, _) => insert (op =) v |
|
423 |
| TFree _ => bad_thm |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
424 |
("Illegal free type variable in equation\n" ^ Display.string_of_thm_global thy thm))) t []; |
31156 | 425 |
val lhs_vs = vars_of lhs; |
426 |
val rhs_vs = vars_of rhs; |
|
427 |
val lhs_tvs = tvars_of lhs; |
|
428 |
val rhs_tvs = tvars_of rhs; |
|
429 |
val _ = if null (subtract (op =) lhs_vs rhs_vs) |
|
430 |
then () |
|
431 |
else bad_thm ("Free variables on right hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
432 |
^ Display.string_of_thm_global thy thm); |
31156 | 433 |
val _ = if null (subtract (op =) lhs_tvs rhs_tvs) |
434 |
then () |
|
435 |
else bad_thm ("Free type variables on right hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
436 |
^ Display.string_of_thm_global thy thm) |
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
437 |
val (head, args) = (strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of) thm; |
31156 | 438 |
val (c, ty) = case head |
439 |
of Const (c_ty as (_, ty)) => (AxClass.unoverload_const thy c_ty, ty) |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
440 |
| _ => bad_thm ("Equation not headed by constant\n" ^ Display.string_of_thm_global thy thm); |
31156 | 441 |
fun check _ (Abs _) = bad_thm |
442 |
("Abstraction on left hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
443 |
^ Display.string_of_thm_global thy thm) |
31156 | 444 |
| check 0 (Var _) = () |
445 |
| check _ (Var _) = bad_thm |
|
446 |
("Variable with application on left hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
447 |
^ Display.string_of_thm_global thy thm) |
31156 | 448 |
| check n (t1 $ t2) = (check (n+1) t1; check 0 t2) |
449 |
| check n (Const (c_ty as (c, ty))) = if n = (length o fst o strip_type) ty |
|
450 |
then if not proper orelse is_constr_pat (AxClass.unoverload_const thy c_ty) |
|
451 |
then () |
|
452 |
else bad_thm (quote c ^ " is not a constructor, on left hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
453 |
^ Display.string_of_thm_global thy thm) |
31156 | 454 |
else bad_thm |
455 |
("Partially applied constant " ^ quote c ^ " on left hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
456 |
^ Display.string_of_thm_global thy thm); |
31156 | 457 |
val _ = map (check 0) args; |
458 |
val _ = if not proper orelse is_linear thm then () |
|
459 |
else bad_thm ("Duplicate variables on left hand side of equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
460 |
^ Display.string_of_thm_global thy thm); |
31156 | 461 |
val _ = if (is_none o AxClass.class_of_param thy) c |
462 |
then () |
|
463 |
else bad_thm ("Polymorphic constant as head in equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
464 |
^ Display.string_of_thm_global thy thm) |
31962 | 465 |
val _ = if not (is_constr thy c) |
31156 | 466 |
then () |
467 |
else bad_thm ("Constructor as head in equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
468 |
^ Display.string_of_thm_global thy thm) |
31156 | 469 |
val ty_decl = Sign.the_const_type thy c; |
470 |
val _ = if Sign.typ_equiv thy (Type.strip_sorts ty_decl, Type.strip_sorts ty) |
|
471 |
then () else bad_thm ("Type\n" ^ string_of_typ thy ty |
|
472 |
^ "\nof equation\n" |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
473 |
^ Display.string_of_thm_global thy thm |
31156 | 474 |
^ "\nis incompatible with declared function type\n" |
475 |
^ string_of_typ thy ty_decl) |
|
476 |
in (thm, proper) end; |
|
477 |
||
31962 | 478 |
fun assert_eqn thy = error_thm (gen_assert_eqn thy (is_constr thy)); |
479 |
||
480 |
fun meta_rewrite thy = LocalDefs.meta_rewrite_rule (ProofContext.init thy); |
|
31156 | 481 |
|
31962 | 482 |
fun mk_eqn thy = error_thm (gen_assert_eqn thy (K true)) o |
483 |
apfst (meta_rewrite thy); |
|
484 |
||
485 |
fun mk_eqn_warning thy = Option.map (fn (thm, _) => (thm, is_linear thm)) |
|
486 |
o warning_thm (gen_assert_eqn thy (K true)) o rpair false o meta_rewrite thy; |
|
487 |
||
488 |
fun mk_eqn_liberal thy = Option.map (fn (thm, _) => (thm, is_linear thm)) |
|
489 |
o try_thm (gen_assert_eqn thy (K true)) o rpair false o meta_rewrite thy; |
|
31156 | 490 |
|
491 |
(*those following are permissive wrt. to overloaded constants!*) |
|
492 |
||
32640
ba6531df2c64
corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents:
32544
diff
changeset
|
493 |
val head_eqn = dest_Const o fst o strip_comb o fst o Logic.dest_equals o Thm.plain_prop_of; |
31957 | 494 |
fun const_typ_eqn thy thm = |
31156 | 495 |
let |
32640
ba6531df2c64
corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents:
32544
diff
changeset
|
496 |
val (c, ty) = head_eqn thm; |
31156 | 497 |
val c' = AxClass.unoverload_const thy (c, ty); |
498 |
in (c', ty) end; |
|
31957 | 499 |
fun const_eqn thy = fst o const_typ_eqn thy; |
31156 | 500 |
|
32873 | 501 |
fun typscheme thy (c, ty) = |
502 |
(map dest_TFree (Sign.const_typargs thy (c, ty)), Type.strip_sorts ty); |
|
503 |
fun typscheme_eqn thy = typscheme thy o apsnd Logic.unvarifyT o const_typ_eqn thy; |
|
504 |
fun typscheme_eqns thy c [] = |
|
505 |
let |
|
506 |
val raw_ty = Sign.the_const_type thy c; |
|
507 |
val tvars = Term.add_tvar_namesT raw_ty []; |
|
508 |
val tvars' = case AxClass.class_of_param thy c |
|
509 |
of SOME class => [TFree (Name.aT, [class])] |
|
510 |
| NONE => Name.invent_list [] Name.aT (length tvars) |
|
511 |
|> map (fn v => TFree (v, [])); |
|
512 |
val ty = typ_subst_TVars (tvars ~~ tvars') raw_ty; |
|
513 |
in typscheme thy (c, ty) end |
|
514 |
| typscheme_eqns thy c (thms as thm :: _) = typscheme_eqn thy thm; |
|
32872
019201eb7e07
variables in type schemes must be renamed simultaneously with variables in equations
haftmann
parents:
32738
diff
changeset
|
515 |
|
31962 | 516 |
fun assert_eqns_const thy c eqns = |
517 |
let |
|
518 |
fun cert (eqn as (thm, _)) = if c = const_eqn thy thm |
|
519 |
then eqn else error ("Wrong head of code equation,\nexpected constant " |
|
32091
30e2ffbba718
proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
wenzelm
parents:
32070
diff
changeset
|
520 |
^ string_of_const thy c ^ "\n" ^ Display.string_of_thm_global thy thm) |
31962 | 521 |
in map (cert o assert_eqn thy) eqns end; |
31156 | 522 |
|
32929 | 523 |
fun standard_typscheme thy thms = |
32354 | 524 |
let |
32640
ba6531df2c64
corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents:
32544
diff
changeset
|
525 |
fun tvars_of T = rev (Term.add_tvarsT T []); |
ba6531df2c64
corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents:
32544
diff
changeset
|
526 |
val vss = map (tvars_of o snd o head_eqn) thms; |
32354 | 527 |
fun inter_sorts vs = |
528 |
fold (curry (Sorts.inter_sort (Sign.classes_of thy)) o snd) vs []; |
|
529 |
val sorts = map_transpose inter_sorts vss; |
|
32873 | 530 |
val vts = Name.names Name.context Name.aT sorts |
32354 | 531 |
|> map (fn (v, sort) => TVar ((v, 0), sort)); |
532 |
in map2 (fn vs => Thm.certify_instantiate (vs ~~ vts, [])) vss thms end; |
|
31962 | 533 |
|
534 |
fun these_eqns thy c = |
|
535 |
get_eqns thy c |
|
536 |
|> (map o apfst) (Thm.transfer thy) |
|
32929 | 537 |
|> burrow_fst (standard_typscheme thy); |
31962 | 538 |
|
539 |
fun all_eqns thy = |
|
540 |
Symtab.dest ((the_eqns o the_exec) thy) |
|
33006 | 541 |
|> maps (snd o snd o fst o snd); |
31962 | 542 |
|
543 |
||
544 |
(* cases *) |
|
31156 | 545 |
|
546 |
fun case_certificate thm = |
|
547 |
let |
|
548 |
val ((head, raw_case_expr), cases) = (apfst Logic.dest_equals |
|
32640
ba6531df2c64
corrected order of type variables in code equations; more precise certificate for cases
haftmann
parents:
32544
diff
changeset
|
549 |
o apsnd Logic.dest_conjunctions o Logic.dest_implies o Thm.plain_prop_of) thm; |
31156 | 550 |
val _ = case head of Free _ => true |
551 |
| Var _ => true |
|
552 |
| _ => raise TERM ("case_cert", []); |
|
553 |
val ([(case_var, _)], case_expr) = Term.strip_abs_eta 1 raw_case_expr; |
|
554 |
val (Const (case_const, _), raw_params) = strip_comb case_expr; |
|
555 |
val n = find_index (fn Free (v, _) => v = case_var | _ => false) raw_params; |
|
556 |
val _ = if n = ~1 then raise TERM ("case_cert", []) else (); |
|
557 |
val params = map (fst o dest_Var) (nth_drop n raw_params); |
|
558 |
fun dest_case t = |
|
559 |
let |
|
560 |
val (head' $ t_co, rhs) = Logic.dest_equals t; |
|
561 |
val _ = if head' = head then () else raise TERM ("case_cert", []); |
|
562 |
val (Const (co, _), args) = strip_comb t_co; |
|
563 |
val (Var (param, _), args') = strip_comb rhs; |
|
564 |
val _ = if args' = args then () else raise TERM ("case_cert", []); |
|
565 |
in (param, co) end; |
|
566 |
fun analyze_cases cases = |
|
567 |
let |
|
568 |
val co_list = fold (AList.update (op =) o dest_case) cases []; |
|
569 |
in map (the o AList.lookup (op =) co_list) params end; |
|
570 |
fun analyze_let t = |
|
571 |
let |
|
572 |
val (head' $ arg, Var (param', _) $ arg') = Logic.dest_equals t; |
|
573 |
val _ = if head' = head then () else raise TERM ("case_cert", []); |
|
574 |
val _ = if arg' = arg then () else raise TERM ("case_cert", []); |
|
575 |
val _ = if [param'] = params then () else raise TERM ("case_cert", []); |
|
576 |
in [] end; |
|
577 |
fun analyze (cases as [let_case]) = |
|
578 |
(analyze_cases cases handle Bind => analyze_let let_case) |
|
579 |
| analyze cases = analyze_cases cases; |
|
580 |
in (case_const, (n, analyze cases)) end; |
|
581 |
||
582 |
fun case_cert thm = case_certificate thm |
|
583 |
handle Bind => error "bad case certificate" |
|
584 |
| TERM _ => error "bad case certificate"; |
|
585 |
||
31962 | 586 |
fun get_case_scheme thy = Symtab.lookup ((fst o the_cases o the_exec) thy); |
24219 | 587 |
|
31962 | 588 |
val undefineds = Symtab.keys o snd o the_cases o the_exec; |
24219 | 589 |
|
590 |
||
31962 | 591 |
(* diagnostic *) |
24219 | 592 |
|
593 |
fun print_codesetup thy = |
|
594 |
let |
|
595 |
val ctxt = ProofContext.init thy; |
|
24844
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
596 |
val exec = the_exec thy; |
33006 | 597 |
fun pretty_eqns (s, (_, eqns)) = |
24219 | 598 |
(Pretty.block o Pretty.fbreaks) ( |
33006 | 599 |
Pretty.str s :: map (Display.pretty_thm ctxt o fst) eqns |
24219 | 600 |
); |
601 |
fun pretty_dtyp (s, []) = |
|
602 |
Pretty.str s |
|
603 |
| pretty_dtyp (s, cos) = |
|
604 |
(Pretty.block o Pretty.breaks) ( |
|
605 |
Pretty.str s |
|
606 |
:: Pretty.str "=" |
|
31156 | 607 |
:: separate (Pretty.str "|") (map (fn (c, []) => Pretty.str (string_of_const thy c) |
24219 | 608 |
| (c, tys) => |
609 |
(Pretty.block o Pretty.breaks) |
|
31156 | 610 |
(Pretty.str (string_of_const thy c) |
26947
133905a0c493
moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents:
26928
diff
changeset
|
611 |
:: Pretty.str "of" |
133905a0c493
moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents:
26928
diff
changeset
|
612 |
:: map (Pretty.quote o Syntax.pretty_typ_global thy) tys)) cos) |
24219 | 613 |
); |
28368 | 614 |
val eqns = the_eqns exec |
24423
ae9cd0e92423
overloaded definitions accompanied by explicit constants
haftmann
parents:
24283
diff
changeset
|
615 |
|> Symtab.dest |
31156 | 616 |
|> (map o apfst) (string_of_const thy) |
28695 | 617 |
|> (map o apsnd) (snd o fst) |
24219 | 618 |
|> sort (string_ord o pairself fst); |
619 |
val dtyps = the_dtyps exec |
|
620 |
|> Symtab.dest |
|
28695 | 621 |
|> map (fn (dtco, (_, (vs, cos)) :: _) => |
31957 | 622 |
(string_of_typ thy (Type (dtco, map TFree vs)), cos)) |
24219 | 623 |
|> sort (string_ord o pairself fst) |
624 |
in |
|
625 |
(Pretty.writeln o Pretty.chunks) [ |
|
626 |
Pretty.block ( |
|
30023
55954f726043
permissive check for pattern discipline in case schemes
haftmann
parents:
29970
diff
changeset
|
627 |
Pretty.str "code equations:" |
24219 | 628 |
:: Pretty.fbrk |
33006 | 629 |
:: (Pretty.fbreaks o map pretty_eqns) eqns |
24219 | 630 |
), |
25968 | 631 |
Pretty.block ( |
24219 | 632 |
Pretty.str "datatypes:" |
633 |
:: Pretty.fbrk |
|
634 |
:: (Pretty.fbreaks o map pretty_dtyp) dtyps |
|
635 |
) |
|
636 |
] |
|
637 |
end; |
|
638 |
||
639 |
||
31962 | 640 |
(** declaring executable ingredients **) |
641 |
||
642 |
(* datatypes *) |
|
31090
3be41b271023
clarified matter of "proper" flag in code equations
haftmann
parents:
31088
diff
changeset
|
643 |
|
33314 | 644 |
structure Type_Interpretation = |
645 |
Interpretation(type T = string * serial val eq = eq_snd (op =) : T * T -> bool); |
|
25462 | 646 |
|
24423
ae9cd0e92423
overloaded definitions accompanied by explicit constants
haftmann
parents:
24283
diff
changeset
|
647 |
fun add_datatype raw_cs thy = |
24219 | 648 |
let |
25597
34860182b250
moved instance parameter management from class.ML to axclass.ML
haftmann
parents:
25501
diff
changeset
|
649 |
val cs = map (fn c_ty as (_, ty) => (AxClass.unoverload_const thy c_ty, ty)) raw_cs; |
31156 | 650 |
val (tyco, vs_cos) = constrset_of_consts thy cs; |
30076 | 651 |
val old_cs = (map fst o snd o get_datatype thy) tyco; |
652 |
fun drop_outdated_cases cases = fold Symtab.delete_safe |
|
653 |
(Symtab.fold (fn (c, (_, (_, cos))) => |
|
654 |
if exists (member (op =) old_cs) cos |
|
655 |
then insert (op =) c else I) cases []) cases; |
|
24219 | 656 |
in |
657 |
thy |
|
31091
8316d22f10f5
corrected deletetion of code equations for constructors
haftmann
parents:
31090
diff
changeset
|
658 |
|> fold (del_eqns o fst) cs |
28703 | 659 |
|> map_exec_purge NONE |
28695 | 660 |
((map_dtyps o Symtab.map_default (tyco, [])) (cons (serial (), vs_cos)) |
30076 | 661 |
#> (map_cases o apfst) drop_outdated_cases) |
31962 | 662 |
|> Type_Interpretation.data (tyco, serial ()) |
24219 | 663 |
end; |
664 |
||
31962 | 665 |
fun type_interpretation f = Type_Interpretation.interpretation |
25485 | 666 |
(fn (tyco, _) => fn thy => f (tyco, get_datatype thy tyco) thy); |
667 |
||
24423
ae9cd0e92423
overloaded definitions accompanied by explicit constants
haftmann
parents:
24283
diff
changeset
|
668 |
fun add_datatype_cmd raw_cs thy = |
ae9cd0e92423
overloaded definitions accompanied by explicit constants
haftmann
parents:
24283
diff
changeset
|
669 |
let |
31156 | 670 |
val cs = map (read_bare_const thy) raw_cs; |
24423
ae9cd0e92423
overloaded definitions accompanied by explicit constants
haftmann
parents:
24283
diff
changeset
|
671 |
in add_datatype cs thy end; |
24219 | 672 |
|
31962 | 673 |
|
674 |
(* code equations *) |
|
675 |
||
33075 | 676 |
fun gen_add_eqn default (thm, proper) thy = |
677 |
let |
|
678 |
val thm' = Thm.close_derivation thm; |
|
679 |
val c = const_eqn thy thm'; |
|
680 |
in change_eqns false c (add_thm thy default (thm', proper)) thy end; |
|
31962 | 681 |
|
682 |
fun add_eqn thm thy = |
|
683 |
gen_add_eqn false (mk_eqn thy (thm, true)) thy; |
|
684 |
||
685 |
fun add_warning_eqn thm thy = |
|
686 |
case mk_eqn_warning thy thm |
|
687 |
of SOME eqn => gen_add_eqn false eqn thy |
|
688 |
| NONE => thy; |
|
689 |
||
690 |
fun add_default_eqn thm thy = |
|
691 |
case mk_eqn_liberal thy thm |
|
692 |
of SOME eqn => gen_add_eqn true eqn thy |
|
693 |
| NONE => thy; |
|
694 |
||
695 |
fun add_nbe_eqn thm thy = |
|
696 |
gen_add_eqn false (mk_eqn thy (thm, false)) thy; |
|
697 |
||
698 |
val add_default_eqn_attribute = Thm.declaration_attribute |
|
699 |
(fn thm => Context.mapping (add_default_eqn thm) I); |
|
700 |
val add_default_eqn_attrib = Attrib.internal (K add_default_eqn_attribute); |
|
701 |
||
702 |
fun del_eqn thm thy = case mk_eqn_liberal thy thm |
|
703 |
of SOME (thm, _) => change_eqns true (const_eqn thy thm) (del_thm thm) thy |
|
704 |
| NONE => thy; |
|
705 |
||
32070 | 706 |
(* c.f. src/HOL/Tools/recfun_codegen.ML *) |
707 |
||
33522 | 708 |
structure Code_Target_Attr = Theory_Data |
709 |
( |
|
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
710 |
type T = (string -> thm -> theory -> theory) option; |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
711 |
val empty = NONE; |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
712 |
val extend = I; |
33522 | 713 |
fun merge (f1, f2) = if is_some f1 then f1 else f2; |
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
714 |
); |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
715 |
|
32070 | 716 |
fun set_code_target_attr f = Code_Target_Attr.map (K (SOME f)); |
717 |
||
718 |
fun code_target_attr prefix thm thy = |
|
719 |
let |
|
720 |
val attr = the_default ((K o K) I) (Code_Target_Attr.get thy); |
|
721 |
in thy |> add_warning_eqn thm |> attr prefix thm end; |
|
722 |
||
723 |
(* setup *) |
|
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
724 |
|
31962 | 725 |
val _ = Context.>> (Context.map_theory |
726 |
(let |
|
727 |
fun mk_attribute f = Thm.declaration_attribute (fn thm => Context.mapping (f thm) I); |
|
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
728 |
val code_attribute_parser = |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
729 |
Args.del |-- Scan.succeed (mk_attribute del_eqn) |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
730 |
|| Args.$$$ "nbe" |-- Scan.succeed (mk_attribute add_nbe_eqn) |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
731 |
|| (Args.$$$ "target" |-- Args.colon |-- Args.name >> |
32070 | 732 |
(mk_attribute o code_target_attr)) |
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
733 |
|| Scan.succeed (mk_attribute add_warning_eqn); |
31962 | 734 |
in |
735 |
Type_Interpretation.init |
|
31998
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
736 |
#> Attrib.setup (Binding.name "code") (Scan.lift code_attribute_parser) |
2c7a24f74db9
code attributes use common underscore convention
haftmann
parents:
31971
diff
changeset
|
737 |
"declare theorems for code generation" |
31962 | 738 |
end)); |
739 |
||
740 |
||
741 |
(* cases *) |
|
742 |
||
24844
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
743 |
fun add_case thm thy = |
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
744 |
let |
31156 | 745 |
val (c, (k, case_pats)) = case_cert thm; |
31088 | 746 |
val _ = case filter_out (is_constr thy) case_pats |
30076 | 747 |
of [] => () |
748 |
| cs => error ("Non-constructor(s) in case certificate: " ^ commas (map quote cs)); |
|
749 |
val entry = (1 + Int.max (1, length case_pats), (k, case_pats)) |
|
750 |
in (map_exec_purge (SOME [c]) o map_cases o apfst) (Symtab.update (c, entry)) thy end; |
|
24844
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
751 |
|
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
752 |
fun add_undefined c thy = |
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
753 |
(map_exec_purge (SOME [c]) o map_cases o apsnd) (Symtab.update (c, ())) thy; |
98c006a30218
certificates for code generator case expressions
haftmann
parents:
24837
diff
changeset
|
754 |
|
24219 | 755 |
end; (*struct*) |
756 |
||
757 |
||
32661
f4d179d91af2
experimenting to add some useful interface for definitions
bulwahn
parents:
32640
diff
changeset
|
758 |
(** type-safe interfaces for data dependent on executable code **) |
24219 | 759 |
|
31962 | 760 |
functor Code_Data_Fun(Data: CODE_DATA_ARGS): CODE_DATA = |
24219 | 761 |
struct |
762 |
||
763 |
type T = Data.T; |
|
764 |
exception Data of T; |
|
765 |
fun dest (Data x) = x |
|
766 |
||
767 |
val kind = Code.declare_data (Data Data.empty) |
|
27609 | 768 |
(fn thy => fn cs => fn Data x => Data (Data.purge thy cs x)); |
24219 | 769 |
|
770 |
val data_op = (kind, Data, dest); |
|
771 |
||
772 |
val get = Code.get_data data_op; |
|
773 |
val change = Code.change_data data_op; |
|
774 |
fun change_yield thy = Code.change_yield_data data_op thy; |
|
775 |
||
776 |
end; |
|
777 |
||
28143 | 778 |
structure Code : CODE = struct open Code; end; |