author | haftmann |
Wed, 28 Apr 2010 16:56:18 +0200 | |
changeset 36514 | 3971cd55c869 |
parent 36470 | ed9be131a4ec |
child 36534 | 0090b04432f7 |
permissions | -rw-r--r-- |
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(* Title: Tools/code/code_eval.ML_ |
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Author: Florian Haftmann, TU Muenchen |
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Runtime services building on code generation into implementation language SML. |
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*) |
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signature CODE_EVAL = |
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sig |
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val target: string |
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val eval: string option -> string * (unit -> 'a) option Unsynchronized.ref |
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-> ((term -> term) -> 'a -> 'a) -> theory -> term -> string list -> 'a |
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val evaluation_code: theory -> string -> string list -> string list |
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-> string * ((string * string) list * (string * string) list) |
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val setup: theory -> theory |
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end; |
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structure Code_Eval : CODE_EVAL = |
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struct |
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(** generic **) |
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val target = "Eval"; |
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val eval_struct_name = "Code"; |
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|
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fun evaluation_code thy struct_name_hint tycos consts = |
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let |
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val (consts', (naming, program)) = Code_Thingol.consts_program thy false consts; |
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val tycos' = map (the o Code_Thingol.lookup_tyco naming) tycos; |
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val struct_name = if struct_name_hint = "" then eval_struct_name |
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else struct_name_hint; |
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val (ml_code, target_names) = Code_ML.evaluation_code_of thy target |
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struct_name naming program (consts' @ tycos'); |
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val (consts'', tycos'') = chop (length consts') target_names; |
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val consts_map = map2 (fn const => fn NONE => |
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error ("Constant " ^ (quote o Code.string_of_const thy) const |
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^ "\nhas a user-defined serialization") |
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| SOME const'' => (const, const'')) consts consts'' |
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val tycos_map = map2 (fn tyco => fn NONE => |
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error ("Type " ^ (quote o Sign.extern_type thy) tyco |
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^ "\nhas a user-defined serialization") |
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| SOME tyco'' => (tyco, tyco'')) tycos tycos''; |
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in (ml_code, (tycos_map, consts_map)) end; |
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||
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(** evaluation **) |
28054 | 47 |
|
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fun eval some_target reff postproc thy t args = |
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let |
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val ctxt = ProofContext.init thy; |
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fun evaluator naming program ((_, (_, ty)), t) deps = |
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let |
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val _ = if Code_Thingol.contains_dictvar t then |
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error "Term to be evaluated contains free dictionaries" else (); |
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val value_name = "Value.VALUE.value" |
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val program' = program |
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|> Graph.new_node (value_name, |
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Code_Thingol.Fun (Term.dummy_patternN, (([], ty), [(([], t), (NONE, true))]))) |
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|> fold (curry Graph.add_edge value_name) deps; |
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parents:
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val (value_code, [SOME value_name']) = Code_ML.evaluation_code_of thy |
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(the_default target some_target) "" naming program' [value_name]; |
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val sml_code = "let\n" ^ value_code ^ "\nin " ^ value_name' |
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^ space_implode " " (map (enclose "(" ")") args) ^ " end"; |
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in ML_Context.evaluate ctxt false reff sml_code end; |
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in Code_Thingol.eval thy postproc evaluator t end; |
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parents:
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(** instrumentalization by antiquotation **) |
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local |
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structure CodeAntiqData = Proof_Data |
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( |
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type T = (string list * string list) * (bool * (string |
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* (string * ((string * string) list * (string * string) list)) lazy)); |
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fun init _ = (([], []), (true, ("", Lazy.value ("", ([], []))))); |
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); |
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val is_first_occ = fst o snd o CodeAntiqData.get; |
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fun register_code new_tycos new_consts ctxt = |
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let |
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val ((tycos, consts), (_, (struct_name, _))) = CodeAntiqData.get ctxt; |
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val tycos' = fold (insert (op =)) new_tycos tycos; |
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val consts' = fold (insert (op =)) new_consts consts; |
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val (struct_name', ctxt') = if struct_name = "" |
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then ML_Antiquote.variant eval_struct_name ctxt |
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else (struct_name, ctxt); |
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val acc_code = Lazy.lazy |
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(fn () => evaluation_code (ProofContext.theory_of ctxt) eval_struct_name tycos' consts'); |
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in CodeAntiqData.put ((tycos', consts'), (false, (struct_name', acc_code))) ctxt' end; |
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fun register_const const = register_code [] [const]; |
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fun register_datatype tyco constrs = register_code [tyco] constrs; |
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fun print_const const all_struct_name tycos_map consts_map = |
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(Long_Name.append all_struct_name o the o AList.lookup (op =) consts_map) const; |
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fun print_datatype tyco constrs all_struct_name tycos_map consts_map = |
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let |
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val upperize = implode o nth_map 0 Symbol.to_ascii_upper o explode; |
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fun check_base name name'' = |
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if upperize (Long_Name.base_name name) = upperize name'' |
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then () else error ("Name as printed " ^ quote name'' |
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^ "\ndiffers from logical base name " ^ quote (Long_Name.base_name name) ^ "; sorry."); |
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val tyco'' = (the o AList.lookup (op =) tycos_map) tyco; |
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val constrs'' = map (the o AList.lookup (op =) consts_map) constrs; |
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val _ = check_base tyco tyco''; |
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val _ = map2 check_base constrs constrs''; |
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in "datatype " ^ tyco'' ^ " = datatype " ^ Long_Name.append all_struct_name tyco'' end; |
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fun print_code is_first print_it ctxt = |
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let |
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val (_, (_, (struct_code_name, acc_code))) = CodeAntiqData.get ctxt; |
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val (ml_code, (tycos_map, consts_map)) = Lazy.force acc_code; |
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val ml_code = if is_first then ml_code |
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else ""; |
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val all_struct_name = "Isabelle." ^ struct_code_name; |
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in (ml_code, print_it all_struct_name tycos_map consts_map) end; |
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in |
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fun ml_code_antiq raw_const background = |
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let |
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val const = Code.check_const (ProofContext.theory_of background) raw_const; |
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val is_first = is_first_occ background; |
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val background' = register_const const background; |
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in (print_code is_first (print_const const), background') end; |
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fun ml_code_datatype_antiq (raw_tyco, raw_constrs) background = |
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let |
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val thy = ProofContext.theory_of background; |
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val tyco = Sign.intern_type thy raw_tyco; |
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val constrs = map (Code.check_const thy) raw_constrs; |
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val constrs' = (map fst o snd o Code.get_type thy) tyco; |
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val _ = if eq_set (op =) (constrs, constrs') then () |
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else error ("Type " ^ quote tyco ^ ": given constructors diverge from real constructors") |
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val is_first = is_first_occ background; |
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val background' = register_datatype tyco constrs background; |
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in (print_code is_first (print_datatype tyco constrs), background') end; |
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end; (*local*) |
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(** reflection support **) |
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fun check_datatype thy tyco consts = |
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let |
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val constrs = (map fst o snd o Code.get_type thy) tyco; |
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val missing_constrs = subtract (op =) consts constrs; |
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val _ = if null missing_constrs then [] |
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else error ("Missing constructor(s) " ^ commas (map quote missing_constrs) |
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^ " for datatype " ^ quote tyco); |
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val false_constrs = subtract (op =) constrs consts; |
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val _ = if null false_constrs then [] |
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else error ("Non-constructor(s) " ^ commas (map quote false_constrs) |
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^ " for datatype " ^ quote tyco); |
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in () end; |
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fun add_eval_tyco (tyco, tyco') thy = |
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let |
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val k = Sign.arity_number thy tyco; |
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fun pr pr' fxy [] = tyco' |
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| pr pr' fxy [ty] = |
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Code_Printer.concat [pr' Code_Printer.BR ty, tyco'] |
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| pr pr' fxy tys = |
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Code_Printer.concat [Code_Printer.enum "," "(" ")" (map (pr' Code_Printer.BR) tys), tyco'] |
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in |
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thy |
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|> Code_Target.add_syntax_tyco target tyco (SOME (k, pr)) |
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end; |
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fun add_eval_constr (const, const') thy = |
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let |
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val k = Code.args_number thy const; |
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fun pr pr' fxy ts = Code_Printer.brackify fxy |
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(const' :: the_list (Code_ML.print_tuple pr' Code_Printer.BR (map fst ts))); |
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in |
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thy |
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|> Code_Target.add_syntax_const target const (SOME (Code_Printer.simple_const_syntax (k, pr))) |
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end; |
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fun add_eval_const (const, const') = Code_Target.add_syntax_const target |
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const (SOME (Code_Printer.simple_const_syntax (0, (K o K o K) const'))); |
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||
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fun process (code_body, (tyco_map, (constr_map, const_map))) module_name NONE thy = |
36470 | 188 |
let |
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val pr = Code_Printer.str o Long_Name.append module_name; |
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in |
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191 |
thy |
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|> Code_Target.add_reserved target module_name |
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|> Context.theory_map (ML_Context.exec (fn () => ML_Context.eval true Position.none code_body)) |
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|> fold (add_eval_tyco o apsnd pr) tyco_map |
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|> fold (add_eval_constr o apsnd pr) constr_map |
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|> fold (add_eval_const o apsnd pr) const_map |
197 |
end |
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| process (code_body, _) _ (SOME file_name) thy = |
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let |
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val preamble = "(* Generated from " ^ Path.implode (ThyLoad.thy_path (Context.theory_name thy)) |
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^ "; DO NOT EDIT! *)"; |
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val _ = File.write (Path.explode file_name) (preamble ^ "\n\n" ^ code_body); |
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in |
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thy |
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end; |
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fun gen_code_reflect prep_type prep_const raw_datatypes raw_functions module_name some_file thy = |
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let |
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val datatypes = map (fn (raw_tyco, raw_cos) => |
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(prep_type thy raw_tyco, map (prep_const thy) raw_cos)) raw_datatypes; |
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val _ = map (uncurry (check_datatype thy)) datatypes; |
212 |
val tycos = map fst datatypes; |
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val constrs = maps snd datatypes; |
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val functions = map (prep_const thy) raw_functions; |
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val result = evaluation_code thy module_name tycos (constrs @ functions) |
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|> (apsnd o apsnd) (chop (length constrs)); |
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36470 | 217 |
in |
218 |
thy |
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36514 | 219 |
|> process result module_name some_file |
36470 | 220 |
end; |
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222 |
val code_reflect = gen_code_reflect Code_Target.cert_tyco Code.check_const; |
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val code_reflect_cmd = gen_code_reflect Code_Target.read_tyco Code.read_const; |
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225 |
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28054 | 226 |
(** Isar setup **) |
227 |
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228 |
val _ = ML_Context.add_antiq "code" (fn _ => Args.term >> ml_code_antiq); |
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val _ = ML_Context.add_antiq "code_datatype" (fn _ => |
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(Args.type_name true --| Scan.lift (Args.$$$ "=") |
30962 | 231 |
-- (Args.term ::: Scan.repeat (Scan.lift (Args.$$$ "|") |-- Args.term))) |
232 |
>> ml_code_datatype_antiq); |
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28054 | 233 |
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36470 | 234 |
local |
235 |
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236 |
structure P = OuterParse |
|
237 |
and K = OuterKeyword |
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238 |
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239 |
val datatypesK = "datatypes"; |
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val functionsK = "functions"; |
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val module_nameK = "module_name"; |
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242 |
val fileK = "file"; |
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val andK = "and" |
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244 |
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245 |
val _ = List.app K.keyword [datatypesK, functionsK]; |
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246 |
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247 |
val parse_datatype = (P.name --| P.$$$ "=" -- (P.term ::: (Scan.repeat (P.$$$ "|" |-- P.term)))); |
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248 |
||
249 |
in |
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250 |
||
251 |
val _ = |
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252 |
OuterSyntax.command "code_reflect" "enrich runtime environment with generated code" |
|
253 |
K.thy_decl (Scan.optional (P.$$$ datatypesK |-- (parse_datatype |
|
254 |
::: Scan.repeat (P.$$$ andK |-- parse_datatype))) [] |
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255 |
-- Scan.optional (P.$$$ functionsK |-- Scan.repeat1 P.name) [] |
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256 |
--| P.$$$ module_nameK -- P.name |
|
257 |
-- Scan.option (P.$$$ fileK |-- P.name) |
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258 |
>> (fn (((raw_datatypes, raw_functions), module_name), some_file) => Toplevel.theory |
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259 |
(code_reflect_cmd raw_datatypes raw_functions module_name some_file))); |
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260 |
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261 |
end; (*local*) |
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262 |
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changeset
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263 |
val setup = Code_Target.extend_target (target, (Code_ML.target_SML, K I)); |
28054 | 264 |
|
265 |
end; (*struct*) |