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(* Copyright 2004-2013 Sascha Husa, Ian Hinder, Christiane Lechner
This file is part of Kranc.
Kranc is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Kranc is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Kranc; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
BeginPackage["CodeGenParam`", {"Errors`", "Helpers`", "Kranc`", "CodeGenKranc`",
"CodeGen`", "CodeGenC`", "MapLookup`"}];
CreateParam::usage = "Create the content of the param.ccl file.";
Begin["`Private`"];
(* ------------------------------------------------------------------------
Parameter file
------------------------------------------------------------------------ *)
(* parameterFileSpec = {Implementations -> {}, NewParameters -> {}}
implementation = {Name -> "",
UsedParameters (optional) -> {spec1, spec2, ...},
ExtendedParameters (optional) -> {spec1, spec2, ...}}
(optional) allowedValue = {Value -> "", Description -> ""}
parameter spec = {Name -> "", Type -> "", Default -> "",
Description -> "", Visibility -> "private",
AllowedValues -> {...}} *)
(* To be used for parameters; will quote it if it is a keyword *)
renderValue[type_, value_] :=
If[type == "KEYWORD",
Quote[value],
If[type == "CCTK_REAL",
ToString[CForm[value]],
value]];
(* Return a block defining a parameter with the given
parameterSpec (defined above). This is used for defining new
parameters, as well as extending existing ones. *)
parameterBlock[spec_] :=
{lookup[spec, Type], " ",
lookup[spec, Name], " ",
Quote[lookup[spec, Description]],
If[mapContains[spec, AccumulatorBase],
{" ACCUMULATOR-BASE=", lookup[spec, AccumulatorBase]},
{}],
If[mapContains[spec, Steerable],
{" STEERABLE=",Switch[lookup[spec, Steerable],
Never,"NEVER",
Always,"ALWAYS",
Recover, "RECOVER",
_,ThrowError["Unknown 'Steerable' entry in parameter " <> ToString[lookup[spec, Name]] <> ": " <> ToString[lookup[spec, Steerable]]]]},
{}],
"\n",
SuffixedCBlock[
(* For each allowed value of the parameter specified in the spec,
create a line with the value and the description *)
Map[{renderValue[lookup[spec,Type], lookup[#, Value]], " :: ",
Quote[lookup[#, Description]], "\n"} &,
lookupDefault[spec, AllowedValues, {}]],
(* Output the line describing the default value of the parameter *)
renderValue[lookup[spec,Type], lookup[spec, Default]]],
"\n"};
(* Given a particular implementation, return a CodeGen block defining
which parameters are used or extended from that implementation *)
parameterImplementationSection[spec_] :=
{"\nshares: ", lookup[spec, Name], "\n", "\n",
(* For each used parameter in the spec, output a line indicating
that it is used *)
Map[{"USES ", lookup[#, Type], " ", lookup[#, Name], "\n"} &,
lookupDefault[spec, UsedParameters, {}]], "\n",
(* For each extended parameter in the spec, output a parameter
block containing the specified extension prefixed with EXTENDS *)
Map[{"EXTENDS ", parameterBlock[#], "\n"} &,
lookupDefault[spec, ExtendedParameters, {}]]};
(* Given a parameterFileSpec structure, return a CodeGen block for the
param.ccl file *)
CreateParam[spec_] :=
{FileHeader["CCL"],
(* For each implementation defined in the spec, output a block
which declares which parameters are used and extended by this
implementation *)
Map[parameterImplementationSection,
lookupDefault[spec, Implementations, {}]],
(* For each new parameter being defined by this implementation,
output a parameter block for it *)
Map[{lookup[#, Visibility], ":\n", parameterBlock[#]} &,
lookupDefault[spec, NewParameters, {}]]};
End[];
EndPackage[];
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