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Thorn.m: Move symmetries registration file generation to new CodeGenS…
…ymmetries.m
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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 | ||
| *) | ||
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| BeginPackage[ | ||
| "CodeGenSymmetries`", | ||
| {"Errors`", "Helpers`", "Kranc`", "CodeGenCactus`", "MapLookup`", "CodeGenKranc`", | ||
| "CodeGenC`"}]; | ||
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| CreateSymmetriesRegistrationSource::usage = ""; | ||
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| Begin["`Private`"]; | ||
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| (* ------------------------------------------------------------------------ | ||
| Symmetries Registration | ||
| ------------------------------------------------------------------------ *) | ||
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| (* Symmetries registration spec = {FullName -> "impl::GFname", | ||
| Sym -> {symX, symY, symZ}} *) | ||
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| SymmetriesBlock[spec_] := | ||
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| Module[{i, KrancDim}, | ||
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| If[!MatchQ[spec, {FullName -> _String, Sym -> {_,_,_}}], | ||
| ThrowError["SymmetriesBlock: Expecting a symmetry registration spec but got ", spec]]; | ||
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| KrancDim = 3; | ||
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| sym = lookup[spec, Sym]; | ||
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| {Table["sym[" <> ToString[i - 1] <> "] = " <> | ||
| ToString@sym[[i]] <> ";\n", {i, 1, KrancDim}], | ||
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| "SetCartSymVN(cctkGH, sym, \"" <> lookup[spec, FullName] <> "\");\n\n" | ||
| } | ||
| ]; | ||
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| (* syms is a list of rules mapping gridfunctions to their symmetry structures *) | ||
| calcSymmetry[gf_, syms_] := | ||
| Module[{}, | ||
| If[mapContains[syms, gf], | ||
| Return[lookup[syms,gf]], | ||
| (* FIXME: We are defaulting to scalar symmetries if no information is | ||
| available. This shouldn't happen, but I am bypassing this check | ||
| temporarily. *) | ||
| Print["WARNING: defaulting to symmetries of a scalar for "<>ToString[gf]]; | ||
| Return[{1,1,1}]]]; | ||
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| (* This function guesses the symmetries based on component names as we | ||
| have not been given them *) | ||
| calcSymmetry[gf_] := Module[{sym, q, string}, | ||
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| sym = {1, 1, 1}; (* default *) | ||
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| string = ToString@gf; | ||
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| While[IntegerQ[q = ToExpression@StringTake[string, -1]], | ||
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| Module[{}, | ||
| sym[[q]] = -sym[[q]]; | ||
| string = StringDrop[string, -1] | ||
| ] | ||
| ]; | ||
| sym | ||
| ]; | ||
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| (* Compatibility function to be called by KrancThorns because it | ||
| doesn't understand reflection symmetries *) | ||
| CreateSymmetriesRegistrationSource[thornName_, implementationName_, GFs_, debug_] := | ||
| CreateSymmetriesRegistrationSource[thornName, implementationName, GFs, False, debug]; | ||
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| (* Given a symmetries registration structure as defined above, return a | ||
| C CodeGen structure of a source file which will register the symmetries. *) | ||
| CreateSymmetriesRegistrationSource[thornName_, implementationName_, GFs_, reflectionSymmetries_, debug_] := | ||
| Module[{spec, j, lang, tmp}, | ||
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| If[debug, | ||
| Print["Registering Symmetries for: ", GFs]; | ||
| ]; | ||
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| lang = CodeGenC`SOURCELANGUAGE; | ||
| CodeGenC`SOURCELANGUAGE = "C"; | ||
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| spec = Table[{FullName -> implementationName <> "::" <> ToString@GFs[[j]], | ||
| Sym -> If[reflectionSymmetries === False, | ||
| calcSymmetry[GFs[[j]]], | ||
| calcSymmetry[GFs[[j]], Union@reflectionSymmetries]]}, {j, 1, Length@GFs}]; | ||
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| tmp = {FileHeader["C"], | ||
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| Map[IncludeFile, | ||
| {"cctk.h", "cctk_Arguments.h", "cctk_Parameters.h", "Symmetry.h"}], | ||
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| DefineCCTKFunction[ thornName <> "_RegisterSymmetries", "void", | ||
| If[Length[spec] > 0, | ||
| {CommentedBlock["array holding symmetry definitions", | ||
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| "CCTK_INT sym[3];\n\n"], | ||
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| CommentedBlock["Register symmetries of grid functions", | ||
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| Map[SymmetriesBlock, spec]]}, | ||
| {}] | ||
| ] | ||
| }; | ||
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| CodeGenC`SOURCELANGUAGE = lang; | ||
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| tmp | ||
| ]; | ||
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| End[]; | ||
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| EndPackage[]; |
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