162 lines
6.1 KiB
Standard ML
162 lines
6.1 KiB
Standard ML
(*****************************************************************************
|
|
* su4sml --- an SML repository for managing (Secure)UML/OCL models
|
|
* http://projects.brucker.ch/su4sml/
|
|
*
|
|
* gcg_core.sml --- implements functor GCG_Core
|
|
* transcribes a su4sml model according to a template tree
|
|
* into code specific to a target language cartridge
|
|
* This file is part of su4sml.
|
|
*
|
|
* Copyright (c) 2005-2007, ETH Zurich, Switzerland
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
*
|
|
* * Neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
******************************************************************************)
|
|
(* $Id$ *)
|
|
|
|
(** A Code generator *)
|
|
signature GCG =
|
|
sig
|
|
|
|
val writeLine : string -> unit
|
|
val generate : Rep.Model -> string -> unit
|
|
|
|
end
|
|
|
|
(** builds a code generator from a cartridge chain. *)
|
|
functor GCG_Core (C: CARTRIDGE): GCG =
|
|
struct
|
|
|
|
|
|
val curFile = ref ""
|
|
val out = ref TextIO.stdOut
|
|
|
|
fun closeFile () = if (!curFile = "")
|
|
then ()
|
|
else (TextIO.closeOut (!out);
|
|
(* info ("closing "^(!curFile));*)
|
|
curFile := "")
|
|
|
|
(* FIXME: set out to a real NullStream *)
|
|
fun openNull file = (closeFile ();
|
|
Logger.info ("skipping "^file);
|
|
out := (TextIO.openOut "/dev/null");
|
|
curFile := "/dev/null"
|
|
)
|
|
|
|
|
|
fun openFile file = (closeFile ();
|
|
Logger.info ("opening "^file);
|
|
Gcg_Helper.assureDir file;
|
|
out := (TextIO.openOut file);
|
|
curFile := file
|
|
)
|
|
|
|
fun openFileIfNotExists file = (closeFile ();
|
|
(if ((OS.FileSys.fileSize file) > 0)
|
|
then openNull file
|
|
else openFile file
|
|
) handle SysErr => ( openFile file ))
|
|
|
|
fun initOut () = (out := TextIO.stdOut;
|
|
curFile := "")
|
|
|
|
fun writeLine s = TextIO.output (!out,s)
|
|
|
|
fun eval s = (Logger.info "<eval>"; CompilerExt.eval true s)
|
|
|
|
(** applies f to every other element in l starting with the second
|
|
*)
|
|
fun map2EveryOther f [] = []
|
|
| map2EveryOther f [a] = [a]
|
|
| map2EveryOther f (a::b::z) = a::(f b)::(map2EveryOther f z)
|
|
|
|
fun substituteVars e s =
|
|
let val tkl = Gcg_Helper.joinEscapeSplitted "$" (Gcg_Helper.fieldSplit #"$" s)
|
|
in
|
|
String.concat (map2EveryOther (C.lookup e) tkl)
|
|
handle ex => (Logger.error ("in GCG_Core.substituteVars: \
|
|
\variable lookup failure in string \""^s^"\".");
|
|
s)
|
|
end
|
|
|
|
(** traverses a templateParseTree and executes the given instructions *)
|
|
fun write env (Tpl_Parser.RootNode(l)) = List.app (write env) l
|
|
| write env (Tpl_Parser.OpenFileLeaf(file)) = openFile (substituteVars env file)
|
|
| write env (Tpl_Parser.OpenFileIfNotExistsLeaf(file)) =
|
|
openFileIfNotExists (substituteVars env file)
|
|
| write env (Tpl_Parser.EvalLeaf(l)) =
|
|
let fun collectEval [] = ""
|
|
| collectEval ((Tpl_Parser.TextLeaf(expr))::t) = expr^"\n"^(collectEval t)
|
|
| collectEval _ =
|
|
Logger.error "in GCG_Core.write: No TextLeaf in EvalLeaf"
|
|
in
|
|
eval (substituteVars env (collectEval l))
|
|
end
|
|
| write env (Tpl_Parser.TextLeaf(s)) = writeLine (substituteVars env s)
|
|
| write env (Tpl_Parser.IfNode(cond,l)) =
|
|
let fun writeThen _ [] = ()
|
|
| writeThen _ [Tpl_Parser.ElseNode(_)] = ()
|
|
| writeThen e (h::t) = (write e h ;writeThen e t)
|
|
in
|
|
(if (C.test env cond)
|
|
then writeThen env l
|
|
else case (List.last l) of nd as (Tpl_Parser.ElseNode(_)) => write env nd
|
|
| _ => ())
|
|
handle ex => Logger.error ("in GCG_Core.write: problem in IfNode "^cond)
|
|
end
|
|
| write env (Tpl_Parser.ElseNode(l)) = List.app (write env) l
|
|
| write env (Tpl_Parser.ForEachNode(listType,children))=
|
|
let val list_of_environments = C.foreach listType env
|
|
fun write_children e = List.app (fn tree => write e tree) children
|
|
in
|
|
List.app (fn e => write_children e) list_of_environments
|
|
handle ex => (Logger.error ("in GCG_Core.write: error in foreach node "^listType^
|
|
": "^General.exnMessage ex);
|
|
())
|
|
end
|
|
|
|
|
|
(** generate code according to the given template file for the given model *)
|
|
fun generate model template
|
|
= let val env = C.initEnv model
|
|
val tree = Tpl_Parser.parse template
|
|
in
|
|
(initOut();
|
|
(*printTTree tree;*)
|
|
write env tree;
|
|
closeFile ();
|
|
Logger.info "codegen finished successfully"
|
|
)
|
|
handle ex => (closeFile(); raise ex)
|
|
end
|
|
|
|
end
|