author | wenzelm |
Mon, 07 Mar 2016 21:09:28 +0100 | |
changeset 62549 | 9498623b27f0 |
parent 61077 | 06cca32aa519 |
child 63157 | 65a81a4ef7f8 |
permissions | -rw-r--r-- |
(* Title: HOL/Library/code_test.ML Author: Andreas Lochbihler, ETH Zurich Test infrastructure for the code generator *) signature CODE_TEST = sig val add_driver : string * ((Proof.context -> (string * string) list * string -> Path.T -> string) * string) -> theory -> theory val get_driver : theory -> string -> ((Proof.context -> (string * string) list * string -> Path.T -> string) * string) option val overlord : bool Config.T val successN : string val failureN : string val start_markerN : string val end_markerN : string val test_terms : Proof.context -> term list -> string -> unit val test_targets : Proof.context -> term list -> string list -> unit list val test_code_cmd : string list -> string list -> Toplevel.state -> unit val eval_term : string -> Proof.context -> term -> term val gen_driver : (theory -> Path.T -> string list -> string -> {files : (Path.T * string) list, compile_cmd : string option, run_cmd : string, mk_code_file : string -> Path.T}) -> string -> string -> string -> theory -> (string * string) list * string -> Path.T -> string val ISABELLE_POLYML : string val polymlN : string val evaluate_in_polyml : Proof.context -> (string * string) list * string -> Path.T -> string val mltonN : string val ISABELLE_MLTON : string val evaluate_in_mlton : Proof.context -> (string * string) list * string -> Path.T -> string val smlnjN : string val ISABELLE_SMLNJ : string val evaluate_in_smlnj : Proof.context -> (string * string) list * string -> Path.T -> string val ocamlN : string val ISABELLE_OCAMLC : string val evaluate_in_ocaml : Proof.context -> (string * string) list * string -> Path.T -> string val ghcN : string val ISABELLE_GHC : string val ghc_options : string Config.T val evaluate_in_ghc : Proof.context -> (string * string) list * string -> Path.T -> string val scalaN : string val ISABELLE_SCALA : string val evaluate_in_scala : Proof.context -> (string * string) list * string -> Path.T -> string end structure Code_Test : CODE_TEST = struct (* convert a list of terms into nested tuples and back *) fun mk_tuples [] = @{term "()"} | mk_tuples [t] = t | mk_tuples (t :: ts) = HOLogic.mk_prod (t, mk_tuples ts) fun dest_tuples (Const (@{const_name Pair}, _) $ l $ r) = l :: dest_tuples r | dest_tuples t = [t] fun map_option _ NONE = NONE | map_option f (SOME x) = SOME (f x) fun last_field sep str = let val n = size sep; val len = size str; fun find i = if i < 0 then NONE else if String.substring (str, i, n) = sep then SOME i else find (i - 1); in (case find (len - n) of NONE => NONE | SOME i => SOME (String.substring (str, 0, i), String.extract (str, i + n, NONE))) end; fun split_first_last start stop s = case first_field start s of NONE => NONE | SOME (initial, rest) => case last_field stop rest of NONE => NONE | SOME (middle, tail) => SOME (initial, middle, tail); (* Data slot for drivers *) structure Drivers = Theory_Data ( type T = (string * ((Proof.context -> (string * string) list * string -> Path.T -> string) * string)) list; val empty = []; val extend = I; fun merge data : T = AList.merge (op =) (K true) data; ) val add_driver = Drivers.map o AList.update (op =); val get_driver = AList.lookup (op =) o Drivers.get; (* Test drivers must produce output of the following format: The start of the relevant data is marked with start_markerN, its end with end_markerN. Between these two markers, every line corresponds to one test. Lines of successful tests start with successN, failures start with failureN. The failure failureN may continue with the YXML encoding of the evaluated term. There must not be any additional whitespace in between. *) (* Parsing of results *) val successN = "True" val failureN = "False" val start_markerN = "*@*Isabelle/Code_Test-start*@*" val end_markerN = "*@*Isabelle/Code_Test-end*@*" fun parse_line line = if String.isPrefix successN line then (true, NONE) else if String.isPrefix failureN line then (false, if size line > size failureN then String.extract (line, size failureN, NONE) |> YXML.parse_body |> Term_XML.Decode.term |> dest_tuples |> SOME else NONE) else raise Fail ("Cannot parse result of evaluation:\n" ^ line) fun parse_result target out = case split_first_last start_markerN end_markerN out of NONE => error ("Evaluation failed for " ^ target ^ "!\nBash output:\n" ^ out) | SOME (_, middle, _) => middle |> trim_line |> split_lines |> map parse_line (* Pretty printing of test results *) fun pretty_eval _ NONE _ = [] | pretty_eval ctxt (SOME evals) ts = [Pretty.fbrk, Pretty.big_list "Evaluated terms" (map (fn (t, eval) => Pretty.block [Syntax.pretty_term ctxt t, Pretty.brk 1, Pretty.str "=", Pretty.brk 1, Syntax.pretty_term ctxt eval]) (ts ~~ evals))] fun pretty_failure ctxt target (((_, evals), query), eval_ts) = Pretty.block (Pretty.text ("Test in " ^ target ^ " failed for") @ [Pretty.brk 1, Pretty.quote (Syntax.pretty_term ctxt query)] @ pretty_eval ctxt evals eval_ts) fun pretty_failures ctxt target failures = Pretty.blk (0, Pretty.fbreaks (map (pretty_failure ctxt target) failures)) (* Driver invocation *) val overlord = Attrib.setup_config_bool @{binding "code_test_overlord"} (K false); fun with_overlord_dir name f = let val path = Path.append (Path.explode "$ISABELLE_HOME_USER") (Path.basic (name ^ serial_string ())) val _ = Isabelle_System.mkdirs path; in Exn.release (Exn.capture f path) end; fun dynamic_value_strict ctxt t compiler = let val thy = Proof_Context.theory_of ctxt val (driver, target) = case get_driver thy compiler of NONE => error ("No driver for target " ^ compiler) | SOME f => f; val debug = Config.get (Proof_Context.init_global thy) overlord val with_dir = if debug then with_overlord_dir else Isabelle_System.with_tmp_dir fun evaluate f = with_dir "Code_Test" (driver ctxt f) |> parse_result compiler fun evaluator program _ vs_ty deps = Exn.interruptible_capture evaluate (Code_Target.evaluator ctxt target program deps true vs_ty); fun postproc f = map (apsnd (map_option (map f))) in Exn.release (Code_Thingol.dynamic_value ctxt (Exn.map_res o postproc) evaluator t) end; (* Term preprocessing *) fun add_eval (Const (@{const_name Trueprop}, _) $ t) = add_eval t | add_eval (Const (@{const_name "HOL.eq"}, _) $ lhs $ rhs) = (fn acc => acc |> add_eval rhs |> add_eval lhs |> cons rhs |> cons lhs) | add_eval (Const (@{const_name "Not"}, _) $ t) = add_eval t | add_eval (Const (@{const_name "Orderings.ord_class.less_eq"}, _) $ lhs $ rhs) = (fn acc => lhs :: rhs :: acc) | add_eval (Const (@{const_name "Orderings.ord_class.less"}, _) $ lhs $ rhs) = (fn acc => lhs :: rhs :: acc) | add_eval _ = I fun mk_term_of [] = @{term "None :: (unit \<Rightarrow> yxml_of_term) option"} | mk_term_of ts = let val tuple = mk_tuples ts val T = fastype_of tuple in @{term "Some :: (unit \<Rightarrow> yxml_of_term) \<Rightarrow> (unit \<Rightarrow> yxml_of_term) option"} $ (absdummy @{typ unit} (@{const yxml_string_of_term} $ (Const (@{const_name Code_Evaluation.term_of}, T --> @{typ term}) $ tuple))) end fun test_terms ctxt ts target = let val thy = Proof_Context.theory_of ctxt fun term_of t = Sign.of_sort thy (fastype_of t, @{sort term_of}) fun ensure_bool t = case fastype_of t of @{typ bool} => () | _ => error ("Test case not of type bool: " ^ Pretty.string_of (Syntax.pretty_term ctxt t)) val _ = map ensure_bool ts val evals = map (fn t => filter term_of (add_eval t [])) ts val eval = map mk_term_of evals val T = HOLogic.mk_prodT (@{typ bool}, Type (@{type_name option}, [@{typ unit} --> @{typ yxml_of_term}])) val t = HOLogic.mk_list T (map HOLogic.mk_prod (ts ~~ eval)) val result = dynamic_value_strict ctxt t target; val failed = filter_out (fst o fst o fst) (result ~~ ts ~~ evals) handle ListPair.UnequalLengths => error ("Evaluation failed!\nWrong number of test results: " ^ Int.toString (length result)) val _ = case failed of [] => () | _ => error (Pretty.string_of (pretty_failures ctxt target failed)) in () end fun test_targets ctxt = map o test_terms ctxt fun test_code_cmd raw_ts targets state = let val ctxt = Toplevel.context_of state; val ts = Syntax.read_terms ctxt raw_ts; val frees = fold Term.add_free_names ts [] val _ = if frees = [] then () else error ("Terms contain free variables: " ^ Pretty.string_of (Pretty.block (Pretty.commas (map Pretty.str frees)))) in test_targets ctxt ts targets; () end fun eval_term target ctxt t = let val frees = Term.add_free_names t [] val _ = if frees = [] then () else error ("Term contains free variables: " ^ Pretty.string_of (Pretty.block (Pretty.commas (map Pretty.str frees)))) val thy = Proof_Context.theory_of ctxt val T_t = fastype_of t val _ = if Sign.of_sort thy (T_t, @{sort term_of}) then () else error ("Type " ^ Pretty.string_of (Syntax.pretty_typ ctxt T_t) ^ " of term not of sort " ^ Pretty.string_of (Syntax.pretty_sort ctxt @{sort term_of})) val T = HOLogic.mk_prodT (@{typ bool}, Type (@{type_name option}, [@{typ unit} --> @{typ yxml_of_term}])) val t' = HOLogic.mk_list T [HOLogic.mk_prod (@{term "False"}, mk_term_of [t])] val result = dynamic_value_strict ctxt t' target; in case result of [(_, SOME [t])] => t | _ => error "Evaluation failed" end (* Generic driver *) fun gen_driver mk_driver env_var env_var_dest compilerN ctxt (code_files, value_name) = let val compiler = getenv env_var val _ = if compiler <> "" then () else error (Pretty.string_of (Pretty.para ("Environment variable " ^ env_var ^ " is not set. To test code generation with " ^ compilerN ^ ", set this variable to your " ^ env_var_dest ^ " in the settings file."))) fun compile NONE = () | compile (SOME cmd) = let val (out, ret) = Isabelle_System.bash_output cmd in if ret = 0 then () else error ("Compilation with " ^ compilerN ^ " failed:\n" ^ cmd ^ "\n" ^ out) end fun run (path : Path.T)= let val modules = map fst code_files val {files, compile_cmd, run_cmd, mk_code_file} = mk_driver ctxt path modules value_name val _ = map (fn (name, code) => File.write (mk_code_file name) code) code_files val _ = map (fn (name, content) => File.write name content) files val _ = compile compile_cmd val (out, res) = Isabelle_System.bash_output run_cmd val _ = if res = 0 then () else error ("Evaluation for " ^ compilerN ^ " terminated with error code " ^ Int.toString res ^ "\nBash output:\n" ^ out) in out end in run end (* Driver for PolyML *) val ISABELLE_POLYML = "ISABELLE_POLYML" val polymlN = "PolyML"; fun mk_driver_polyml _ path _ value_name = let val generatedN = "generated.sml" val driverN = "driver.sml" val code_path = Path.append path (Path.basic generatedN) val driver_path = Path.append path (Path.basic driverN) val driver = "fun main prog_name = \n" ^ " let\n" ^ " fun format_term NONE = \"\"\n" ^ " | format_term (SOME t) = t ();\n" ^ " fun format (true, _) = \"" ^ successN ^ "\\n\"\n" ^ " | format (false, to) = \"" ^ failureN ^ "\" ^ format_term to ^ \"\\n\";\n" ^ " val result = " ^ value_name ^ " ();\n" ^ " val _ = print \"" ^ start_markerN ^ "\";\n" ^ " val _ = map (print o format) result;\n" ^ " val _ = print \"" ^ end_markerN ^ "\";\n" ^ " in\n" ^ " ()\n" ^ " end;\n" val cmd = "echo \"use \\\"" ^ Path.implode code_path ^ "\\\"; use \\\"" ^ Path.implode driver_path ^ "\\\"; main ();\" | " ^ Path.implode (Path.variable ISABELLE_POLYML) in {files = [(driver_path, driver)], compile_cmd = NONE, run_cmd = cmd, mk_code_file = K code_path} end fun evaluate_in_polyml ctxt = gen_driver mk_driver_polyml ISABELLE_POLYML "PolyML executable" polymlN ctxt (* Driver for mlton *) val mltonN = "MLton" val ISABELLE_MLTON = "ISABELLE_MLTON" fun mk_driver_mlton _ path _ value_name = let val generatedN = "generated.sml" val driverN = "driver.sml" val projectN = "test" val ml_basisN = projectN ^ ".mlb" val code_path = Path.append path (Path.basic generatedN) val driver_path = Path.append path (Path.basic driverN) val ml_basis_path = Path.append path (Path.basic ml_basisN) val driver = "fun format_term NONE = \"\"\n" ^ " | format_term (SOME t) = t ();\n" ^ "fun format (true, _) = \"" ^ successN ^ "\\n\"\n" ^ " | format (false, to) = \"" ^ failureN ^ "\" ^ format_term to ^ \"\\n\";\n" ^ "val result = " ^ value_name ^ " ();\n" ^ "val _ = print \"" ^ start_markerN ^ "\";\n" ^ "val _ = map (print o format) result;\n" ^ "val _ = print \"" ^ end_markerN ^ "\";\n" val ml_basis = "$(SML_LIB)/basis/basis.mlb\n" ^ generatedN ^ "\n" ^ driverN val compile_cmd = File.bash_path (Path.variable ISABELLE_MLTON) ^ " -default-type intinf " ^ File.bash_path ml_basis_path val run_cmd = File.bash_path (Path.append path (Path.basic projectN)) in {files = [(driver_path, driver), (ml_basis_path, ml_basis)], compile_cmd = SOME compile_cmd, run_cmd = run_cmd, mk_code_file = K code_path} end fun evaluate_in_mlton ctxt = gen_driver mk_driver_mlton ISABELLE_MLTON "MLton executable" mltonN ctxt (* Driver for SML/NJ *) val smlnjN = "SMLNJ" val ISABELLE_SMLNJ = "ISABELLE_SMLNJ" fun mk_driver_smlnj _ path _ value_name = let val generatedN = "generated.sml" val driverN = "driver.sml" val code_path = Path.append path (Path.basic generatedN) val driver_path = Path.append path (Path.basic driverN) val driver = "structure Test = struct\n" ^ "fun main prog_name =\n" ^ " let\n" ^ " fun format_term NONE = \"\"\n" ^ " | format_term (SOME t) = t ();\n" ^ " fun format (true, _) = \"" ^ successN ^ "\\n\"\n" ^ " | format (false, to) = \"" ^ failureN ^ "\" ^ format_term to ^ \"\\n\";\n" ^ " val result = " ^ value_name ^ " ();\n" ^ " val _ = print \"" ^ start_markerN ^ "\";\n" ^ " val _ = map (print o format) result;\n" ^ " val _ = print \"" ^ end_markerN ^ "\";\n" ^ " in\n" ^ " 0\n" ^ " end;\n" ^ "end;" val cmd = "echo \"Control.MC.matchRedundantError := false; Control.MC.matchRedundantWarn := false;" ^ "use \\\"" ^ Path.implode code_path ^ "\\\"; use \\\"" ^ Path.implode driver_path ^ "\\\";" ^ "Test.main ();\" | " ^ Path.implode (Path.variable ISABELLE_SMLNJ) in {files = [(driver_path, driver)], compile_cmd = NONE, run_cmd = cmd, mk_code_file = K code_path} end fun evaluate_in_smlnj ctxt = gen_driver mk_driver_smlnj ISABELLE_SMLNJ "SMLNJ executable" smlnjN ctxt (* Driver for OCaml *) val ocamlN = "OCaml" val ISABELLE_OCAMLC = "ISABELLE_OCAMLC" fun mk_driver_ocaml _ path _ value_name = let val generatedN = "generated.ml" val driverN = "driver.ml" val code_path = Path.append path (Path.basic generatedN) val driver_path = Path.append path (Path.basic driverN) val driver = "let format_term = function\n" ^ " | None -> \"\"\n" ^ " | Some t -> t ();;\n" ^ "let format = function\n" ^ " | (true, _) -> \"" ^ successN ^ "\\n\"\n" ^ " | (false, x) -> \"" ^ failureN ^ "\" ^ format_term x ^ \"\\n\";;\n" ^ "let result = " ^ ("Generated." ^ value_name) ^ " ();;\n" ^ "let main x =\n" ^ " let _ = print_string \"" ^ start_markerN ^ "\" in\n" ^ " let _ = List.map (fun x -> print_string (format x)) result in\n" ^ " print_string \"" ^ end_markerN ^ "\";;\n" ^ "main ();;" val compiled_path = Path.append path (Path.basic "test") val compile_cmd = Path.implode (Path.variable ISABELLE_OCAMLC) ^ " -w pu -o " ^ Path.implode compiled_path ^ " -I " ^ Path.implode path ^ " nums.cma " ^ Path.implode code_path ^ " " ^ Path.implode driver_path val run_cmd = File.bash_path compiled_path in {files = [(driver_path, driver)], compile_cmd = SOME compile_cmd, run_cmd = run_cmd, mk_code_file = K code_path} end fun evaluate_in_ocaml ctxt = gen_driver mk_driver_ocaml ISABELLE_OCAMLC "ocamlc executable" ocamlN ctxt (* Driver for GHC *) val ghcN = "GHC" val ISABELLE_GHC = "ISABELLE_GHC" val ghc_options = Attrib.setup_config_string @{binding code_test_ghc} (K "") fun mk_driver_ghc ctxt path modules value_name = let val driverN = "Main.hs" fun mk_code_file name = Path.append path (Path.basic (name ^ ".hs")) val driver_path = Path.append path (Path.basic driverN) val driver = "module Main where {\n" ^ String.concat (map (fn module => "import qualified " ^ module ^ ";\n") modules) ^ "main = do {\n" ^ " let {\n" ^ " format_term Nothing = \"\";\n" ^ " format_term (Just t) = t ();\n" ^ " format (True, _) = \"" ^ successN ^ "\\n\";\n" ^ " format (False, to) = \"" ^ failureN ^ "\" ++ format_term to ++ \"\\n\";\n" ^ " result = " ^ value_name ^ " ();\n" ^ " };\n" ^ " Prelude.putStr \"" ^ start_markerN ^ "\";\n" ^ " Prelude.mapM_ (putStr . format) result;\n" ^ " Prelude.putStr \"" ^ end_markerN ^ "\";\n" ^ " }\n" ^ "}\n" val compiled_path = Path.append path (Path.basic "test") val compile_cmd = Path.implode (Path.variable ISABELLE_GHC) ^ " " ^ Code_Haskell.language_params ^ " " ^ Config.get ctxt ghc_options ^ " -o " ^ Path.implode compiled_path ^ " " ^ Path.implode driver_path ^ " -i" ^ Path.implode path val run_cmd = File.bash_path compiled_path in {files = [(driver_path, driver)], compile_cmd = SOME compile_cmd, run_cmd = run_cmd, mk_code_file = mk_code_file} end fun evaluate_in_ghc ctxt = gen_driver mk_driver_ghc ISABELLE_GHC "GHC executable" ghcN ctxt (* Driver for Scala *) val scalaN = "Scala" val ISABELLE_SCALA = "ISABELLE_SCALA" fun mk_driver_scala _ path _ value_name = let val generatedN = "Generated_Code" val driverN = "Driver.scala" val code_path = Path.append path (Path.basic (generatedN ^ ".scala")) val driver_path = Path.append path (Path.basic driverN) val driver = "import " ^ generatedN ^ "._\n" ^ "object Test {\n" ^ " def format_term(x : Option[Unit => String]) : String = x match {\n" ^ " case None => \"\"\n" ^ " case Some(x) => x(())\n" ^ " }\n" ^ " def format(term : (Boolean, Option[Unit => String])) : String = term match {\n" ^ " case (true, _) => \"True\\n\"\n" ^ " case (false, x) => \"False\" + format_term(x) + \"\\n\"\n" ^ " }\n" ^ " def main(args:Array[String]) = {\n" ^ " val result = " ^ value_name ^ "(());\n" ^ " print(\"" ^ start_markerN ^ "\");\n" ^ " result.map{test:(Boolean, Option[Unit => String]) => print(format(test))};\n" ^ " print(\"" ^ end_markerN ^ "\");\n" ^ " }\n" ^ "}\n" val compile_cmd = Path.implode (Path.append (Path.variable ISABELLE_SCALA) (Path.basic "scalac")) ^ " -d " ^ File.bash_path path ^ " -classpath " ^ File.bash_path path ^ " " ^ File.bash_path code_path ^ " " ^ File.bash_path driver_path val run_cmd = Path.implode (Path.append (Path.variable ISABELLE_SCALA) (Path.basic "scala")) ^ " -cp " ^ File.bash_path path ^ " Test" in {files = [(driver_path, driver)], compile_cmd = SOME compile_cmd, run_cmd = run_cmd, mk_code_file = K code_path} end fun evaluate_in_scala ctxt = gen_driver mk_driver_scala ISABELLE_SCALA "Scala directory" scalaN ctxt val test_codeP = Scan.repeat1 Parse.prop -- (@{keyword "in"} |-- Scan.repeat1 Parse.name) val _ = Outer_Syntax.command @{command_keyword test_code} "compile test cases to target languages, execute them and report results" (test_codeP >> (fn (raw_ts, targets) => Toplevel.keep (test_code_cmd raw_ts targets))) val _ = Theory.setup (fold add_driver [(polymlN, (evaluate_in_polyml, Code_ML.target_SML)), (mltonN, (evaluate_in_mlton, Code_ML.target_SML)), (smlnjN, (evaluate_in_smlnj, Code_ML.target_SML)), (ocamlN, (evaluate_in_ocaml, Code_ML.target_OCaml)), (ghcN, (evaluate_in_ghc, Code_Haskell.target)), (scalaN, (evaluate_in_scala, Code_Scala.target))] #> fold (fn target => Value.add_evaluator (target, eval_term target)) [polymlN, mltonN, smlnjN, ocamlN, ghcN, scalaN]); end